JP2014078414A - Battery storage structure and explosion-proof device - Google Patents

Abstract

A battery housing structure capable of replacing a battery while satisfying explosion-proof standards while maintaining the operation state of the device, and an explosion-proof device provided with the battery housing structure.
SOLUTION: The storage slots A1, A2 capable of individually storing battery packs BP1, BP2 and swingable around an axis (fulcrum AX) intersecting with the attaching / detaching direction of the battery packs BP1, BP2 with respect to the storage slots A1, A2. And has an end E1 with which the battery pack BP1 stored in the storage slot A1 abuts and an end E2 with which the battery pack BP2 stored in the storage slot A2 abuts, of the storage slots A1 and A2. A storage slot that contacts either one of the end portions E1 and E2 when the battery pack to be stored in either one of the end portions E1 and E2 is pushed in while being in contact with either one of the end portions E1 and E2. And a seesaw 40 that swings so as to discharge the battery pack stored in one of A1 and A2.
[Selection] Figure 1

Description

  The present invention relates to a battery storage structure for storing a battery, and an explosion-proof device including the battery storage structure.

  In plants and factories, there are many sensor devices such as differential pressure transmitters and temperature transmitters, valve devices such as flow control valves and on-off valves, actuator devices such as fans and motors, and other field devices. Conventional field devices are generally connected to a wired communication bus laid in a plant or the like and perform transmission / reception of various signals by wired communication. In recent years, transmission / reception of various signals is performed by wireless communication. Field devices (wireless field devices) are realized.

  Such a wireless field device is basically installed alone in a plant or the like and cannot receive external power supply (for example, power supply via a communication bus), and therefore a battery is used as a power source. Here, in some cases, flammable gas is used in a plant or the like. Therefore, the wireless field device stores a circuit board storage area and a battery for storing circuit boards so as to satisfy an explosion-proof standard (intrinsically safe explosion-proof standard). The battery storage area is separated by a partition wall, and the battery stored in the battery storage area is designed to be replaceable without exposing the substrate storage area. In addition, batteries used in wireless field devices are mostly stored in battery packs that satisfy the explosion-proof standard, and are exchanged while stored in the battery pack.

  Specifically, the replacement of the battery pack stored in the wireless field device is performed according to the following procedure. First, the lid provided on the wireless field device is removed to expose the battery storage area. Next, after the battery pack stored in the battery storage area is pulled out and taken out, a new battery pack is pushed into the battery storage area and stored. Finally, the battery pack replacement is completed by attaching the removed lid to the wireless field device and sealing the battery storage area. Non-Patent Document 1 below discloses a battery pack used in a conventional wireless field device and a replacement method thereof. Non-Patent Document 2 below discloses explosion-proof standards related to batteries.

Shuji Yamamoto and three others, “World's First ISA100.11a Compliant Wireless Field Device”, Yokogawa Technical Report, Vol. 53, no. 2,2010 “Factory Electric Equipment Explosion Proof Guidelines (Technical Guidelines 2008 Compliant with International Standards)”, JNISH-TR-NO. 43, 2008, p. 17-19

  By the way, the above-described conventional battery pack replacement method requires replacement of a battery pack because a new battery pack needs to be stored in the battery storage area after the battery pack stored in the battery storage area is taken out. It takes several seconds to several minutes. Since the power supply to the wireless field device is not performed for a few seconds to several minutes during which the battery pack is being replaced, the wireless field device is in a suspended state and disconnected from the wireless network. .

  Here, a new battery pack can be connected in parallel to the battery pack (replacement target battery pack) stored in the battery storage area, and the new battery pack is connected in parallel to the replacement battery pack. If the battery pack to be replaced is taken out after that, the power supply is performed even when the battery is replaced, so that the above problem can be solved. However, it is prohibited by explosion-proof standards to connect a plurality of battery packs in parallel. Even if a plurality of battery packs are allowed to be connected in parallel, the current supply capacity is increased by the number of battery packs connected in parallel. Therefore, it is necessary to redesign the circuit board to satisfy the explosion-proof standard. There is a fear.

  The present invention has been made in view of the above circumstances, and provides a battery housing structure capable of replacing batteries while satisfying the explosion-proof standard while maintaining the operation state of the device, and an explosion-proof device including the battery housing structure. The purpose is to provide.

In order to solve the above-described problems, the battery storage structure of the present invention is a battery storage structure for storing a battery, and the first and second storage portions capable of individually storing the batteries (B1, B2, BP1, BP2). (A1, A2) is supported so as to be able to swing around an axis (AX) intersecting with the direction in which the battery is attached to and detached from the first and second storage units, and the battery stored in the first storage unit abuts. A first end (E1) and a second end (E2) with which a battery stored in the second storage portion abuts, and storing either one of the first and second storage portions The battery to be housed in the part is pushed in a state in contact with either one of the first and second end parts, so that either one of the first and second end parts The battery stored in the other storage portion of the first and second storage portions that contacts the end of the battery is discharged. It is characterized in that it comprises a swing member (40, 80) for sea urchin swing.
According to the present invention, the battery to be stored in one of the first and second storage portions is in contact with one of the first and second ends of the swing member. When pushed in contact, the swinging member is stored in the other storage portion of the first and second storage portions that are in contact with the other end portion of the first and second end portions. The battery is swung to discharge the battery.
In the battery storage structure of the present invention, the shaft is set at a position shifted from one end of the first and second storage portions in a direction in which the battery to be stored in the first and second storage portions is pushed. The swinging member is set so that the shaft passes between the first end and the second end.
Alternatively, in the battery storage structure of the present invention, the shaft is set at a position between the first storage portion and the storage portion 2, and the swing member is connected to the first end portion. It is characterized by being set at a position shifted from a straight line connecting the second end.
The battery storage structure of the present invention includes a pair of first electrode members (20, 21a, 21b, 61, 62, which are in contact with battery electrodes (T1, T2, T11, T12) stored in the first storage unit. 71a, 72a) and a pair of second electrode members (20, 22a, 22b, 61, 62, 71b, 72b) in contact with battery electrodes (T1, T2, T11, T12) housed in the second housing part The battery stored in the second storage portion at the same time the battery stored in the first storage portion contacts both of the pair of first electrode members. The second electrode member is not in contact with both of the second electrode members.
An explosion-proof device according to the present invention is an explosion-proof device (1) designed to satisfy an explosion-proof standard, and is characterized by including the battery housing structure described in any of the fixtures.
Alternatively, the explosion-proof device of the present invention is an explosion-proof device (1) designed to satisfy the explosion-proof standard, and the battery storage structure and the substrate storage chamber (R2) separated from the battery storage structure. A circuit board (30) housed in the board housing chamber and operated by electric power supplied via the first and second electrode members; and connected to the first and second electrode members and the circuit board. And a capacitor (C).

  According to the present invention, the battery to be stored in any one of the first and second storage portions is in contact with either one of the first and second ends. The battery stored in the other storage portion of the first and second storage portions that abuts on the other end portion of the first and second end portions is discharged. Since the battery can be replaced in a short time, the battery can be replaced while maintaining the operation state of the equipment while satisfying the explosion-proof standard. .

It is a plane perspective view which simplifies and shows the battery storage structure and explosion-proof device according to the first embodiment of the present invention. It is front perspective drawing which simplifies and shows the battery storage structure and explosion-proof equipment. It is the right side perspective drawing which simplifies and shows the battery storage structure and explosion-proof equipment. 4 is an equivalent circuit of the explosion-proof device and battery pack in the state shown in FIGS. It is a plane perspective view for demonstrating the battery replacement method of the explosion-proof apparatus by 1st Embodiment of this invention. It is a circuit diagram for demonstrating the battery exchange method. FIG. 6 is a front perspective view schematically showing a battery housing structure according to a second embodiment of the present invention. It is the left side perspective view which simplifies and shows the battery storage structure. It is a top view which simplifies and shows the battery storage structure by 3rd Embodiment of this invention.

  Hereinafter, a battery housing structure and an explosion-proof device according to an embodiment of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1 is a plan perspective view schematically showing the battery housing structure and explosion-proof device according to the first embodiment of the present invention, and FIG. 2 is a front perspective view showing the battery housing structure and explosion-proof device in a simplified manner. FIG. 3 is a right side perspective view showing the battery housing structure and the explosion-proof device in a simplified manner. The explosion-proof device 1 shown in FIGS. 1 to 3 is a device designed to satisfy the explosion-proof standard. For example, a sensor device such as a differential pressure transmitter or a temperature transmitter, a flow control valve, an on-off valve, etc. Valve equipment, actuator equipment such as fans and motors, and other field equipment installed in plants and factories.

  As shown in FIGS. 1 to 3, the explosion-proof device 1 of the present embodiment includes a housing 10, a through electrode 20, a circuit board 30, and a seesaw 40 (swing member), and any of the battery packs BP <b> 1 and BP <b> 2. One of them is housed in the housing 10, and the circuit board 30 is operated by supplying power from the battery pack (any one of the battery packs BP 1 and BP 2) housed in the housing 10. The explosion-proof device 1 shown in FIGS. 1 to 3 is in a state where a cover (not shown) attached to the front surface is removed from the housing 10 and the battery packs BP1 and BP2 are replaced. . For this reason, in FIGS. 1 to 3, both of the battery packs BP <b> 1 and BP <b> 2 are inserted into the housing 10, but when the cover (not shown) is attached to the front of the explosion-proof device 1, Only one of the BPs 2 is housed in the housing 10.

  Here, the battery packs BP1 and BP2 accommodate a battery (for example, a primary battery with extremely low self-discharge such as a thionyl lithium chloride battery) in a box-shaped case made of synthetic resin so as to satisfy the explosion-proof standard. It is a thing. A pair of electrodes (a plus electrode T1 and a minus electrode) in contact with the through electrode 20 (specifically, the pair of through electrodes 21a and 21b or the pair of through electrodes 22a and 22b) are provided on one end surfaces of the battery packs BP1 and BP2. T2: see FIG. 4). In this embodiment, the case where the shape of the battery packs BP1 and BP2 is a box shape will be described as an example. However, the shape of the battery packs BP1 and BP2 is another shape (for example, a cylindrical shape). May be.

  The casing 10 is a hollow box-shaped member formed of, for example, stainless steel (SUS: Steel Use Stainless) or synthetic resin, and the interior thereof is separated from the battery storage chamber R1 and the substrate by the partition wall 11 so as to satisfy the explosion-proof standard. Separated from the storage room R2. In the present embodiment, the case 10 has a hollow box shape as an example. However, the shape of the case 10 is not limited to the hollow box shape, and other shapes (for example, a hollow box shape). (Cylindrical shape).

  The battery storage chamber R1 is a storage chamber that stores either one of the battery packs BP1 and BP2, and includes a storage slot A1 (first storage portion) that can store the battery pack BP1 and a storage slot that can store the battery pack BP2. A2 (second storage unit). In addition, the battery storage chamber R1 has an opening OP on the side opposite to the side on which the partition wall 11 is provided, and the battery packs BP1 and BP2 can be attached to and detached from the battery storage chamber R1 via the opening OP. The battery packs BP1 and BP2 can be inserted and the battery packs BP1 and BP2 can be taken out from the battery storage chamber R1). When the battery pack BP1 is stored in the storage slot A1, or when the battery pack BP2 is stored in the storage slot A2, the above-described cover (not shown) is attached to the opening OP, and the battery storage chamber. R1 is hermetically sealed from the outside air.

  The substrate storage chamber R2 is a storage chamber for storing the circuit board 30, and is sealed by the partition wall 11 and is shielded from the outside air. That is, even when the cover (not shown) attached to the opening OP of the battery storage chamber R1 is removed and the battery storage chamber R1 is exposed, the substrate storage chamber R2 is sealed by the partition wall 11. Therefore, outside air does not enter the substrate storage chamber R2 via the battery storage chamber R1. In this way, the circuit board 30 accommodated in the circuit board storage chamber R2 is ignited by the flammable gas not only in a normal state but also in the event of an expected accident. This is to avoid becoming a source.

  The through electrode 20 is an electrode provided so as to penetrate the partition wall 11, and by contacting the electrodes of the battery packs BP1 and BP2 stored in the battery storage chamber R1, the power of the battery packs BP1 and BP2 is stored in the board. It supplies to the circuit board 30 accommodated in chamber R2. Specifically, the through electrode 20 includes a pair of through electrodes 21a and 21b (first electrode members) disposed so as to be in contact with the pair of electrodes of the battery pack BP1 stored in the storage slot A1, and the storage slot A2. A pair of through electrodes 22a and 22b (second electrode members) disposed to be in contact with the pair of electrodes of the battery pack BP2 to be stored.

  Here, the through electrode 21a and the through electrode 22a are electrodes in contact with the positive electrodes T1 (see FIG. 4) of the battery packs BP1 and BP2, respectively. The through electrode 21b and the through electrode 22b are the negative electrodes of the battery packs BP1 and BP2. The electrodes are in contact with T2 (see FIG. 4). The through electrode 21a and the through electrode 22a are connected to a power input terminal T0 (see FIG. 4) of the circuit board 30, and the through electrode 21b and the through electrode 22b are connected to ground or a common potential (circuit common) of the circuit board 30. It is connected. When the positional relationship between the plus electrode T1 and the minus electrode T2 of the battery packs BP1 and BP2 is opposite, the positional relationship between the through electrode 21a and the through electrode 21b and the positional relationship between the through electrode 22a and the through electrode 22b. Vice versa.

  The circuit board 30 is a board on which a circuit for realizing the function of the explosion-proof device 1 is formed. The circuit board 30 is housed in the board housing chamber R <b> 2 and operates with electric power supplied through the through electrode 20. The circuit board 30 includes various circuits such as a circuit for measuring temperature, pressure, etc., a circuit for controlling the flow rate of fluid, a circuit for controlling the rotational speed of a fan, a motor, etc., or a circuit for performing wired or wireless communication. This circuit is formed.

  The seesaw 40 includes a seesaw member 41 and spacers 42a and 42b. When one of the battery packs BP1 and BP2 is pushed into one of the storage slots A1 and A2, the storage slots A1 and A2 The battery packs BP1 and BP2 housed in either one are configured to swing in the direction of discharging the other. The seesaw 40 is provided to allow the battery packs BP1 and BP2 to be replaced while the operation state of the explosion-proof device 1 is maintained.

  The seesaw member 41 is a rod-like member supported so as to be swingable around a fulcrum AX (an axis that intersects the attaching / detaching direction of the battery packs BP1 and BP2 with respect to the storage slots A1 and A2) attached to the recess 12 formed in the partition wall 11. It is a member. In the seesaw member 41, the end of one arm is disposed in the storage slot A1, or the end of the other arm is disposed in the storage slot A2. Accordingly, the seesaw 40 has one end E1 (first end) abutting on the battery pack BP1 stored in the storage slot A1, or the other end E2 (second end) in the storage slot A2. The battery pack BP2 is accommodated.

  Note that the fulcrum AX that supports the seesaw member 41 is attached to the recess 12 of the partition wall 11, so that the fulcrum AX is attached to a position shifted in the direction in which the battery packs BP1 and BP2 are pushed in from one end of the storage slots A1 and A2. It can be said that Further, since the seesaw 40 is supported by the fulcrum AX between the end E1 and the end E2, the shaft is set so as to pass between the end E1 and the end E2. be able to. The recess 12 of the partition wall 11 is formed so as not to prevent the seesaw 40 from swinging when the battery packs BP1 and BP2 are inserted.

  The spacers 42a and 42b are provided to adjust the distance between the battery packs BP1 and BP2 inserted into the storage slots A1 and A2 and the through electrode 20. The spacer 42a is attached to a portion where the battery pack BP1 abuts at one end portion (end portion E1) of the seesaw member 41, and the spacer 42b is attached to the battery pack BP2 at the other end portion (end portion E2) of the seesaw member 41. Is attached to the abutting part. Specifically, the spacers 42a and 42b are configured such that the battery pack BP1 stored in the storage slot A1 is in contact with the through electrodes 21a and 21b and the battery pack BP2 stored in the storage slot A2 is in contact with the through electrodes 22a and 22b. It is something to prevent. That is, the spacers 42 a and 42 b prevent the battery packs BP 1 and BP 2 from being connected in parallel to the circuit board 30.

  FIG. 4 is an equivalent circuit of the explosion-proof device and the battery pack in the state shown in FIGS. As shown in FIG. 4, the battery packs BP1 and BP2 each include a battery 51, a resistor 52, and a diode 53. The battery 51 is a battery (for example, a primary battery such as a thionyl lithium chloride battery) housed in a box-shaped case of the battery packs BP1 and BP2, the positive electrode is connected to the resistor 52, and the negative electrode is the battery packs BP1 and BP2. To the negative electrode T2. The resistor 52 is a current limiting resistor for preventing overcurrent, and is provided between the battery 51 and the diode 53. The diode 53 is a backflow prevention diode provided to prevent a current from flowing into the battery 51. The anode electrode is connected to the resistor 52, and the cathode electrode is connected to the plus electrode T1 of the battery packs BP1 and BP2. The The resistor 52 and the diode 53 are housed in the box-shaped case of the battery packs BP1 and BP2 together with the battery 51.

  The through electrode 21 a and the through electrode 22 a provided in the explosion-proof device 1 are connected to the power input terminal T 0 of the circuit board 30. On the other hand, the through electrode 21b and the through electrode 22b are connected to the ground or a common potential (circuit common) of the circuit board 30. A capacitor C is connected to a connection point between the through electrode 21 a and the through electrode 22 a and the power input terminal T 0 of the circuit board 30. The capacitor C is charged by the battery packs BP1 and BP2 and holds a voltage applied to the power input terminal T0 of the circuit board 30.

  Although details will be described later, when the battery packs BP1 and BP2 are replaced, the battery pack BP1 is temporarily not in contact with the through electrodes 21a and 21b, and the battery pack BP2 is not in contact with the through electrodes 22a and 22b. Thus, a state in which power is not supplied from the battery packs BP1 and BP2 to the circuit board 30 occurs. Even if such a state occurs, the operation state of the explosion-proof device 1 is maintained by holding the voltage applied to the power input terminal T0 of the circuit board 30 by the capacitor C. The capacity of the capacitor C is set in consideration of the power consumption of the circuit board 30 and the time required to replace the battery packs BP1 and BP2. Here, the capacitor C can be omitted if the operation state of the explosion-proof device 1 can be maintained by the electric power stored in the circuit board 30. However, in order to reliably maintain the operating state of the explosion-proof device 1, it is preferable to provide a capacitor C outside the circuit board 30.

  A switch SW1 in FIG. 4 is a virtual switch showing a connection relationship between the plus electrode T1 and the minus electrode T2 provided in the battery pack BP1 and the through electrodes 21a and 21b provided in the explosion-proof device 1. The switch SW2 is a virtual switch that indicates the connection relationship between the plus electrode T1 and the minus electrode T2 provided in the battery pack BP2 and the through electrodes 22a and 22b provided in the explosion-proof device 1.

  The switch SW1 is in an off state when the positive electrode T1 and the negative electrode T2 of the battery pack BP1 are not in contact with the through electrodes 21a and 21b, respectively, and the positive electrode T1 and the negative electrode T2 of the battery pack BP1 are the through electrodes 21a and 21b. It will be in an ON state by touching each. Similarly, the switch SW2 is in an off state when the positive electrode T1 and the negative electrode T2 of the battery pack BP2 are not in contact with the through electrodes 22a and 22b, respectively, and the positive electrode T1 and the negative electrode T2 of the battery pack BP2 are the through electrodes. It will be in an ON state by contacting 22a and 22b, respectively.

  In the state shown in FIGS. 1 to 3, the plus electrode T1 and minus electrode T2 of the battery pack BP1 are not in contact with the through electrodes 21a and 21b, and the plus electrode T1 and minus electrode T2 of the battery pack BP2 are through electrodes 22a and 22b. Is in contact with Therefore, the state shown in FIGS. 1 to 3 is equivalent to a circuit in which the switch SW1 is turned off and the switch SW2 is turned on as shown in FIG. 4, and the power from the battery pack BP2 is the circuit. It is supplied to the substrate 30.

  Next, a method for replacing the battery packs BP1 and BP2 of the explosion-proof device 1 having the above configuration will be described. FIG. 5 is a plan perspective view for explaining the battery replacement method of the explosion-proof device according to the first embodiment of the present invention, and FIG. 6 is a circuit diagram for explaining the battery replacement method. In the following, a case where the battery pack BP1 stored in the storage slot A1 of the battery storage chamber R1 is replaced with the battery pack BP2 of the storage slot A2 will be described as an example.

  First, an operator who replaces the battery packs BP1 and BP2 removes a cover (not shown) provided in front of the explosion-proof device 1 to expose the battery storage chamber R1 of the explosion-proof device 1. Then, the battery pack BP1 stored in the storage slot A1 appears. Next, the operator prepares a new battery pack BP2, and inserts the new battery pack BP2 into the storage slot A2 of the battery storage chamber R1 through the opening OP.

  When the operator pushes in the battery pack BP2 inserted into the storage slot A2, the battery pack BP2 comes into contact with the end E2 of the seesaw 40 as shown in FIG. However, in the state shown in FIG. 5A, the electrodes of the battery pack BP2 (the positive electrode T1 and the negative electrode T2: see FIG. 4) are not in contact with the through electrodes 22a and 22b. As described above, the switch SW2 is in an off state. For this reason, in the state shown in FIG. 5A, power supply from the battery pack BP1 to the circuit board 30 is continued, and power supply from the battery pack BP2 to the circuit board 30 is not performed.

  When the operator further pushes in the battery pack BP2 inserted into the storage slot A2 from the state shown in FIG. 5A, the seesaw 40 with the end E2 in contact with the battery pack BP2 is watched around the fulcrum AX. Swings in the direction of rotation. Then, the battery pack BP1 with which the end E1 of the seesaw 40 is in contact is pushed out in a direction opposite to the pushing direction of the battery pack BP2 with the same force as the operator pushing the battery pack BP2. BP1 is separated from the through electrodes 21a and 21b.

  As a result, as shown in FIG. 5B, the battery pack BP1 is not in contact with the through electrodes 21a and 21b, and the battery pack BP2 is not in contact with the through electrodes 22a and 22b. As shown, both switches SW1 and SW2 are turned off. In the state shown in FIG. 5B, power is not supplied from the battery packs BP1 and BP2 to the circuit board 30, but is applied to the power input terminal T0 of the circuit board 30 by the capacitor C charged by the battery pack BP1. Voltage is held. For this reason, if the time which will be in the state shown in FIG.5 (b) is a short time (for example, within 0.5 second), the operation state of the explosion-proof apparatus 1 will be maintained.

  When the operator further pushes the battery pack BP2 inserted into the storage slot A2 from the state shown in FIG. 5B, the seesaw 40 with the end E2 in contact with the battery pack BP2 is watched around the fulcrum AX. Further swing in the turning direction. Then, the battery pack BP2 pushed in by the operator is in a state where the electrodes (the positive electrode T1 and the negative electrode T2: see FIG. 4) are in contact with the through electrodes 22a and 22b and pushed out by the seesaw 40. The pack BP1 is further pushed out.

  As a result, as shown in FIG. 5C, the battery pack BP2 is in contact with the through electrodes 22a and 22b, while the battery pack BP1 is not in contact with the through electrodes 21a and 21b. As shown, the switch SW1 remains off and the switch SW2 is on. In the state shown in FIG. 5C, power is supplied from the battery pack BP2 to the circuit board 30 instead of the battery pack BP1.

  When the above operation is performed, the battery pack BP2 is stored in the storage slot A2 of the battery storage chamber R1. Finally, the operator takes out the battery pack BP1 pushed out by the seesaw 40 from the battery storage chamber R1, attaches a cover (not shown) to the opening OP of the battery storage chamber R1, and seals the battery storage chamber R1. The replacement work of the battery packs BP1 and BP2 is completed.

  As described above, the explosion-proof device 1 according to the present embodiment is stored in either the storage slot A1, A2 when one of the battery packs BP1, BP2 is pushed into either the storage slot A1, A2. The seesaw 40 is configured to swing in the direction of discharging either one of the battery packs BP1 and BP2, and the battery pack to be replaced and the new battery pack are simultaneously stored. Therefore, the battery pack replacement operation can be performed in a short time. Thereby, the battery pack can be replaced while the operation state of the explosion-proof device 1 is maintained.

  Further, the seesaw 40 is configured such that the battery pack BP1 stored in the storage slot A1 is in contact with the through electrodes 21a and 21b and the battery pack BP2 stored in the storage slot A2 is not in contact with the through electrodes 22a and 22b. Therefore, the explosion-proof standard that prohibits parallel connection of the battery packs BP1 and BP2 is also satisfied. Here, since the capacitor C that holds the voltage applied to the power input terminal T0 of the circuit board 30 is provided, the battery pack BP1 is not in contact with the through electrodes 21a and 21b, and the battery pack BP2 is not connected to the through electrode. Even if the battery packs BP1 and BP2 are exchanged in a short time (for example, within 0.5 seconds) even when they are not in contact with 22a and 22b, the operation state of the explosion-proof device 1 can be maintained. .

[Second Embodiment]
FIG. 7 is a front perspective view showing a simplified battery housing structure according to the second embodiment of the present invention, and FIG. 8 is a left side perspective view showing the simplified battery housing structure. 7 and 8, the same reference numerals are given to the components corresponding to those shown in FIGS. The battery storage structure of the first embodiment described above stores either one of the battery packs BP1 and BP2 in which the battery 51 is stored in a box-shaped case. One of the batteries B1 and B2 that are not stored in the case is stored as it is.

  The batteries B1 and B2 are, for example, single type (D size) primary batteries. Specifically, the batteries B1 and B2 are substantially cylindrical batteries in which a plus electrode T11 is formed at the center of one end face and a minus electrode T12 is formed at the center of the other end face. As the batteries B1 and B2, primary batteries such as lithium thionyl chloride batteries that have very little self-discharge can be used as in the batteries housed in the battery packs BP1 and BP2.

  As shown in FIGS. 7 and 8, the battery storage structure of this embodiment includes a storage case 60 and a seesaw 40. The storage case 60 is a hollow box-shaped member made of, for example, stainless steel or synthetic resin and having an upper surface of the opening OP1. Note that an opening (not shown) for allowing the seesaw 40 to swing is formed on the bottom surface of the storage case 60 at a position corresponding to the position where the seesaw 40 is disposed. The storage case 60 includes a storage slot A1 that can store the battery B1 and a storage slot A2 that can store the battery B2, and stores either one of the batteries B1 and B2.

  On the inner wall on the front side of the storage case 60, a plus electrode 61 extending over the storage slots A1, A2 is provided. Further, two negative electrode coil springs 62 corresponding to the storage slots A1 and A2 are provided on the inner wall on the back side of the storage case 60. The negative electrode coil spring 62 corresponding to the positive electrode 61 and the storage slot A1 is a pair of electrode members (first electrode members) in contact with the positive electrode T11 and the negative electrode T12 of the battery B1 stored in the storage slot A1. is there. The negative electrode coil spring 62 corresponding to the positive electrode 61 and the storage slot A2 is a pair of electrode members (second electrode members) that are in contact with the positive electrode T11 and the negative electrode T12 of the battery B2 stored in the storage slot A2. ).

  The seesaw 40 is disposed at the lower part of the storage case 60. When one of the batteries B1 and B2 is pushed into one of the storage slots A1 and A2, the seesaw 40 is placed in either of the storage slots A1 and A2. The battery B1 is configured to swing in the direction of discharging either one of the batteries B1 and P2. Specifically, the seesaw 40 is configured to be swingable around a fulcrum AX disposed in the lower part of the storage case 60 (in the paper of FIG. 7). The seesaw 40 has one end E1 in contact with the battery B1 stored in the storage slot A1, or the other end E2 in contact with the battery B2 stored in the storage slot A2.

  Further, the seesaw 40 is stored in the storage slot A2 at the same time that the positive electrode T11 and the negative electrode T12 of the battery B1 stored in the storage slot A1 are in contact with the negative electrode coil spring 62 corresponding to the positive electrode 61 and the storage slot A1, respectively. The positive electrode T11 and the negative electrode T12 of the battery B2 to be connected are prevented from contacting the negative electrode coil spring 62 corresponding to the positive electrode 61 and the storage slot A2. Specifically, as shown in FIG. 8, the seesaw 40 is disposed at the lower side of the storage case 60 on the front side of the storage case 60 (the side on which the plus electrode 61 is provided), and is stored in the storage slots A1 and A2. When the batteries B1 and B2 are inserted, the positive electrodes T11 of the batteries B1 and B2 are not in contact with the positive electrode 61 at the same time. The negative electrodes T12 of the batteries B1 and B2 are allowed to contact the negative electrode coil springs 62 corresponding to the storage slots A1 and A2 at the same time.

  The replacement of the batteries B1 and B2 in the battery housing structure in the above configuration is performed by a method substantially similar to the replacement method of the battery packs BP1 and BP2 described in the first embodiment. For example, when replacing the battery B1 stored in the storage slot A1 with the battery B2 in the storage slot A2, the operator first inserts a new battery B2 into the storage slot A2 from the opening OP1. At this time, the battery B2 is inserted into the slot A2 so that the negative electrode T12 of the new battery B2 is in contact with the negative electrode coil spring 62 corresponding to the storage slot A2, and similarly to the battery B1 in FIGS. The positive electrode T11 of the battery B2 is placed above the storage case 60.

  Next, the operator pushes down the plus electrode T11 of the battery B2 inserted into the slot A2 to store the entire battery B2 in the slot A2. When the battery B2 is pushed in, the seesaw 40 swings and the plus electrode T11 of the battery B1 is pushed out above the storage case 60, resulting in the state shown in FIGS. Note that the positive electrodes T11 of the batteries B1 and B2 do not contact the positive electrode 61 at the same time while the battery B2 is being pushed in. Finally, when the operator takes out the battery B1 pushed out by the seesaw 40, the replacement work of the batteries B1 and B2 is completed.

  As described above, the battery storage structure of the present embodiment is stored in one of the storage slots A1 and A2 when one of the batteries B1 and B2 is pushed into one of the storage slots A1 and A2. Since the seesaw 40 is configured to swing in the direction of discharging either one of the batteries B1 and B2, the battery to be replaced can be taken out and a new battery can be stored at the same time. The battery can be replaced in a short time. Thereby, if the battery storage structure of this embodiment is applied to an explosion-proof device, the battery can be replaced while the operation state of the explosion-proof device is maintained.

  Further, the seesaw 40 is stored in the storage slot A2 at the same time that the positive electrode T11 and the negative electrode T12 of the battery B1 stored in the storage slot A1 are in contact with the negative electrode coil spring 62 corresponding to the positive electrode 61 and the storage slot A1, respectively. The positive electrode T11 and the negative electrode T12 of the battery B2 are not in contact with the negative electrode coil spring 62 corresponding to the positive electrode 61 and the storage slot A2, respectively. For this reason, the explosion-proof standard which prohibits parallel connection of battery B1, B2 is also satisfy | filled.

  In the present embodiment, the battery storage structure that stores one of the batteries B1 and B2 that are not stored in the case has been described. However, the batteries B1 and B2 that are stored in the case can also be stored. However, the case for storing the batteries B1 and B2 has a substantially cylindrical shape (or a substantially rectangular shape) similar to the batteries B1 and B2, and the positive electrode T11 is formed at the center of one end surface, while the other It is necessary that the negative electrode T12 is formed at the center of the end face.

[Third Embodiment]
FIG. 9 is a plan view schematically showing the battery housing structure according to the third embodiment of the present invention. In FIG. 9, the same reference numerals are given to the components corresponding to those shown in FIGS. 1 to 3, 7, and 8. In the first and second embodiments described above, the direction in which the new battery pack (battery) is pushed in is opposite to the direction in which the battery pack (battery) to be replaced is pushed out by the seesaw 40. In the embodiment, the battery pack (battery) to be replaced is pushed out in the direction in which a new battery pack (battery) is pushed in.

  As shown in FIG. 9, the battery storage structure of this embodiment includes a storage case 70 and a seesaw 80. The storage case 70 is a hollow box-shaped member that is formed of, for example, stainless steel or synthetic resin, and has a left side surface as an opening OP11 and a right side surface as an opening OP12. The storage case 70 includes a storage slot A1 that can store the battery B1 and a storage slot A2 that can store the battery B2, and stores either one of the batteries B1 and B2.

  On the inner wall on the front side of the storage case 70, two positive electrodes 71a and 71b corresponding to the storage slots A1 and A2 are provided. In addition, two negative electrode coil springs 72 a and 72 b corresponding to the storage slots A 1 and A 2 are provided on the inner wall on the back side of the storage case 70. The plus electrode 71a and the minus electrode coil spring 72a are a pair of electrode members (first electrode members) in contact with the plus electrode T11 and the minus electrode T12 of the battery B1 accommodated in the accommodation slot A1. The positive electrode 71b and the negative electrode coil spring 72b are a pair of electrode members (second electrode members) that are in contact with the positive electrode T11 and the negative electrode T12 of the battery B2 stored in the storage slot A2.

  The seesaw 80 is disposed inside the storage case 70 between the storage slot A1 and the storage slot A2, and when one of the batteries B1 and B2 is pushed into one of the storage slots A1 and A2. The battery B1 is configured to swing in the direction of discharging either one of the batteries B1 and P2 stored in the other of the storage slots A1 and A2. Specifically, the seesaw 80 is a fan-shaped member, and is configured to be swingable around a fulcrum AX (in the plane of FIG. 9) provided between the storage slot A1 and the storage slot A2.

  The seesaw 80 has one end E1 in contact with the battery B1 stored in the storage slot A1, or the other end E2 in contact with the battery B2 stored in the storage slot A2. Note that the fulcrum AX (axis) that supports the seesaw 80 is set at a position where two sides of the seesaw 80 intersect with each other, so that the axis is shifted from the straight line connecting the end E1 and the end E2. It can be said that the position is set.

  In addition, the seesaw 80 has a positive electrode T11 and a negative electrode T12 of the battery B1 stored in the storage slot A1 are in contact with the positive electrode 71a and the negative electrode coil spring 72a, respectively, and at the same time a positive of the battery B2 stored in the storage slot A2. The electrode T11 and the minus electrode T12 are prevented from coming into contact with the plus electrode 71b and the minus electrode coil spring 72b, respectively. Specifically, as shown in FIG. 9, the seesaw 80 has end portions E1 and E2 disposed on the front side of the storage case 70 (the side where the plus electrodes 71a and 71b are provided), and the storage slots A1 and When the batteries B1 and B2 are inserted into A2, the plus electrodes T11 of the batteries B1 and B2 are not in contact with the plus electrodes 71a and 71b at the same time. The negative electrodes T12 of the batteries B1 and B2 are allowed to contact the negative electrode coil springs 72a and 72b at the same time.

  Replacement of the batteries B1 and B2 in the battery housing structure in the above configuration is performed according to the following procedure. For example, when replacing the battery B1 stored in the storage slot A1 with the battery B2 in the storage slot A2, the operator first inserts a new battery B2 into the storage slot A2 from the opening OP11. At this time, the battery B2 is inserted into the slot A2 so that the negative electrode T12 of the new battery B2 contacts the negative electrode coil spring 72b, and the positive electrode T11 of the battery B2 is placed on the left side of the storage case 70 as shown in FIG. It is placed in the state.

  Next, the operator pushes the positive electrode T11 of the battery B2 inserted into the slot A2 toward the storage slot A1, and stores the entire battery B2 in the slot A2. When the battery B2 is pushed in, the seesaw 80 swings and the plus electrode T11 of the battery B1 is pushed out to the opening OP12 side of the storage case 70, and the plus electrode T11 of the battery B1 is pushed into the storage case as shown in FIG. 70 to the right. During the pushing of the battery B2, the positive electrode T11 of the battery B1 is in contact with the positive electrode 71a and the positive electrode T11 of the battery B2 is not in contact with the positive electrode 71b. Finally, when the operator takes out the battery B1 pushed out by the seesaw 80, the replacement work of the batteries B1 and B2 is completed.

  As described above, the battery storage structure of the present embodiment is stored in one of the storage slots A1 and A2 when one of the batteries B1 and B2 is pushed into one of the storage slots A1 and A2. Since the seesaw 80 is configured to swing in the direction of discharging either one of the batteries B1 and B2, the battery to be replaced can be taken out and a new battery can be stored at the same time. The battery can be replaced in a short time. Thereby, if the battery storage structure of this embodiment is applied to an explosion-proof device, the battery can be replaced while the operation state of the explosion-proof device is maintained.

  In addition, the seesaw 80 has a positive electrode T11 and a negative electrode T12 of the battery B1 stored in the storage slot A1 are in contact with the positive electrode 71a and the negative electrode coil spring 72a, respectively, and at the same time a positive of the battery B2 stored in the storage slot A2. The electrode T11 and the minus electrode T12 are prevented from contacting the plus electrode 71b and the minus electrode coil spring 72b, respectively. For this reason, the explosion-proof standard which prohibits parallel connection of battery B1, B2 is also satisfy | filled.

  In the present embodiment, as in the second embodiment, the battery storage structure that stores either one of the batteries B1 and B2 that are not stored in the case has been described. However, the batteries B1 and B2 that are stored in the case are stored in the battery storage structure. It can also be accommodated. However, the case for storing the batteries B1 and B2 has a substantially cylindrical shape (or a substantially rectangular shape) similar to the batteries B1 and B2, and the positive electrode T11 is formed at the center of one end surface, while the other It is necessary that the negative electrode T12 is formed at the center of the end face.

  Although the battery housing structure and the explosion-proof device according to the embodiment of the present invention have been described above, the present invention is not limited to the above-described embodiment, and can be freely changed within the scope of the present invention. For example, in the second and third embodiments described above, the example in which the negative electrode coil spring 62 and the negative electrode coil springs 72a and 72b are provided in the storage cases 60 and 70 has been described. May be. In the third embodiment, the case where the shape of the seesaw 80 is a fan shape has been described as an example. However, the shape of the seesaw 80 may be a shape other than a fan shape, such as a circle, a triangle, or a rectangle. good.

DESCRIPTION OF SYMBOLS 1 Explosion-proof device 20 Through electrode 21a, 21b Through electrode 22a, 22b Through electrode 30 Circuit board 40, 80 Seesaw 61 Plus electrode 62 Negative electrode coil spring 71a, 71b Plus electrode 72a, 72b Negative electrode coil spring A1, A2 Storage slot AX fulcrum B1, B2 battery BP1, BP2 Battery pack C Capacitor E1, E2 End R2 Substrate storage chamber T1, T11 Positive electrode T2, T12 Negative electrode

Claims (6)

A battery storage structure for storing a battery,
First and second storage portions capable of individually storing batteries;
A first end that is supported so as to be swingable about an axis that intersects a direction in which the battery is attached to and detached from the first and second storage portions, and that contacts a battery stored in the first storage portion; and the second storage A battery that is to be stored in any one of the first and second storage portions. The second end portion is a battery that is to be stored in one of the first and second storage portions. Of the first and second storage portions that are in contact with either one of the first and second end portions by being pushed in a state of being in contact with either one of the end portions. And a swinging member that swings so as to discharge the battery stored in the other storage part. The shaft is set at a position shifted from one end of the first and second storage portions in a direction in which a battery to be stored in the first and second storage portions is pushed,
The battery housing structure according to claim 1, wherein the swing member is set so that the shaft passes between the first end and the second end. The shaft is set at a position between the first storage unit and the storage unit 2;
The battery housing structure according to claim 1, wherein the swing member is set at a position where the shaft is displaced from a straight line connecting the first end and the second end. A pair of first electrode members in contact with the electrodes of the battery stored in the first storage portion;
A pair of second electrode members in contact with the electrodes of the battery stored in the second storage portion,
The swing member is configured such that the battery housed in the first housing portion contacts both of the pair of first electrode members and the battery housed in the second housing portion simultaneously with both of the pair of second electrode members. The battery housing structure according to any one of claims 1 to 3, wherein the battery housing structure is not in contact with the battery. Explosion-proof equipment designed to meet explosion-proof standards,
An explosion-proof device comprising the battery housing structure according to any one of claims 1 to 4. Explosion-proof equipment designed to meet explosion-proof standards,
The battery housing structure according to claim 4,
A substrate storage chamber separated from the battery storage structure;
A circuit board that is housed in the board housing chamber and that is operated by power supplied through the first and second electrode members;
An explosion-proof device comprising: a capacitor connected to the first and second electrode members and the circuit board.

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