RU220115U1 - CLOTHING FOR A WELDER - Google Patents

Abstract

The utility model relates to the field of outerwear items, in particular to items of clothing that can accommodate batteries to form a power source for a welding machine. The item of clothes for the welder contains holders for accumulators and built-in accumulators. At the same time, the clothing item is made of non-combustible material. The technical result consists in increasing the safety in the operation of a welder's clothing item with built-in batteries. 9 w.p. f-ly, 4 ill.

Description

The field of technology to which the solution belongs

The solution relates to the field of outerwear, in particular to garments that can accommodate batteries that form a power source for the welding machine.

State of the art

Known carrier system (US 10288384 B2, publ. 02/04/2016), containing a vest and supporting waist belt. The rigid back frame, consisting of a spine extension and a pair of shoulder panels, allows load transfer from the wearer's shoulders to a supportive waist belt. A plurality of fabric panels, including pockets for accommodating ballistic plates and attachment mechanisms for connecting to each other, can also be quickly detached using a quick release mechanism that contains one or more quick release cables. The rigid rear frame may include a rigging or rack system allowing the wearer to carry additional equipment such as radios, batteries, etc. on the vest.

However, in this solution, the batteries are not connected to each other to form a power source of sufficient power to power the welder, the batteries are simply stored in their respective pockets.

Known as a prototype belt for placing batteries (KR 20150068300 A, publ. 06/19/2015), containing many secondary batteries having a positive electrode output and a negative electrode output protruding in both directions; an external box that seals a positive electrode terminal and a negative electrode terminal of the plurality of secondary batteries.

However, this decision does not disclose the protection of batteries from negative environmental factors and protection against battery fire, the presence of a battery monitoring system in the belt.

Utility Model Disclosure

In one aspect of the utility model, an item of clothing for a welder is disclosed, comprising:

battery holders,

characterized by the fact that

the batteries are connected so as to provide sufficient voltage for welding,

the item of clothing is made of non-combustible material.

In additional aspects, it is disclosed that the non-combustible material is a basalt fabric, asbestos fabric, fire retardant canvas fabric, silica fabric, glass fabric, carbon fabric, aramid fabric, or polyester fabric; the item of clothing is one of a belt, a vest, a belt with straps, a backpack; at least one charge controller is additionally installed in the garment element; the batteries are lithium ion or lithium iron phosphate batteries; there is a possibility of quick removal; batteries are arranged in two layers; contains perforation to remove heat from the batteries; contains a temperature sensor and means for interrupting the supply of current, configured to interrupt the supply of current when the temperature recorded by the sensor exceeds a predetermined threshold value.

The main objective of the claimed solution is to create a safe item of clothing for a welder, which can be used for autonomous operation of electric welding without being connected to the mains.

The essence of the solution lies in the fact that a set of batteries is installed in the clothing item, they are connected to each other in series or in series-parallel to provide the required output voltage, and the set of batteries is connected to the welding machine. At the same time, a set of batteries is protected by non-combustible material.

The technical result achieved by the solution is to increase the safety in the operation of a welder's clothing item with built-in batteries.

Brief description of the drawings

Fig. 1 shows an example implementation of a battery belt solution.

Fig. 2 shows an example implementation of a battery vest solution.

Fig. 3 shows an example of a solution in the form of a combination of a vest and a belt.

Implementation of the utility model

The item of clothing with rechargeable batteries is designed for autonomous operation of light welding machines. When using it, there is no need to pull the power line and use the generator in places where long-term welding is not planned.

The proposed solution allows welding with a current of up to 120 amperes and an electrode diameter of up to 3.2 mm. Operating time under maximum load is at least 20 minutes. The operating time at a normal current of 80 amperes with an electrode with a diameter of 3 mm is at least 30 minutes, with electrodes of 2 mm at 50 amperes about 45-50 minutes. The weight of the finished device is no more than 8 kg, in some embodiments no more than 7 kg, excluding the welder, which weighs about 2 kg.

In the claimed solution, it is supposed to use a battery of batteries in the amount of 60-70 pieces, which is usually enough to provide the voltage required for welding, however, more batteries can be used, the upper limit is determined by ease of use.

Lithium ion batteries are preferably used as batteries and are connected in series to provide the required voltage. One embodiment uses 21700 format lithium-ion batteries. The capacity of each cell reaches 5000 milliamp-hours, and the output currents will not exceed 13 amps. This solution provides 260-280 volts with fully charged batteries.

It is possible to use 18650, 26650, 32700 series-parallel format batteries and other battery sizes, which is not the essence of the solution, as a person skilled in the art will be able to select batteries of suitable parameters and connect them to achieve the required voltage and current without applying creative efforts.

Also, a person skilled in the art can provide the output parameters of the battery assembly most suitable for welding with both electrode and wire, which is not the essence of this solution.

It is also possible to use other sizes and types of batteries, such as LiFePO4. Their advantage is safety (they do not burn) and large capacity, and the disadvantage is low voltage, as a result of which it is necessary to increase the number of elements by a quarter, and hence the weight in case of serial connection.

With the appearance of new types and models of batteries (with a larger capacity, a higher maximum current, a higher operating voltage), options are possible in which the batteries are connected in two parallel lines containing series-connected batteries. This solution will provide higher currents along with high voltage, sufficient for welding.

Since the batteries provide direct current, and the welders are usually powered by alternating current, in order to use the claimed solution, it is required to use a slightly modified welding machine: without an AC-to-DC converter. Either it is necessary to provide a second input, one for AC, the second for DC, or use one input, but with a mode switch on the case.

The claimed solution can be made in the form of a belt (Fig. 1), a vest (Fig. 2), a belt with straps (Fig. 3) or a backpack.

The proposed belt is shown in Fig. 1, on which

100 - belt with batteries,

101 - fastener,

102 - batteries.

All elements of the claimed solution are connected to each other at the manufacturing plant through assembly operations so as to ensure structural and functional unity. To connect the elements to each other, any operations obvious to a person skilled in the art can be carried out: sewing, soldering, gluing, riveting, threaded connection, connection using friction forces or elastic forces. Unless otherwise specified, the specific type of connection is not essential within the framework of the claimed solution.

The belt 100 is made of a non-combustible material to protect the worker in the event of a fire in the batteries 102 and to protect the batteries 102 from splashes of hot metal. The belt 100 includes a cavity or cavities, pockets, clips, or other holders for holding the batteries 102. The batteries 102 must be securely fixed in the belt 100, as their protrusion may cause damage.

The fire retardant material is basalt cloth, asbestos cloth, flame retardant canvas cloth, silica cloth, glass cloth, carbon cloth, aramid cloth, polyester cloth, and the like.

The claimed item of clothing is one of a belt, vest, jacket, backpack. The vest contains batteries 102 on the back and/or waist part, it is made of non-combustible material. Hereinafter, when it comes to batteries 102, it is assumed that they are connected so as to provide sufficient voltage.

The vest in Fig. 2 is shown without batteries 102 as an example.

In one embodiment, the claimed item of clothing is a belt 100 on straps 301. The straps 301 are needed to more securely fix the belt 100 in its place due to the fact that the belt 100 hangs over the shoulders. To lighten the belt, part of the batteries can be built into the straps 301, and the straps 301 can also contain pockets for electrodes. Heavy batteries 102 can cause the belt to fall off the waist, potentially damaging the batteries 102 or connecting wires, especially when working at height, which is prevented by the straps 301.

In one embodiment, the claimed garment is a non-combustible backpack adapted to accommodate a set of batteries 102 and, optionally, a welder. From such a backpack comes a wire with an electrode holder and welding machine controls (at least an on / off button).

One of the important requirements for the claimed item of clothing is the ability to quickly remove it, which is necessary in case of abnormal operation of the batteries 102 - overheating and ignition. To do this, the belt 100 is made on a Velcro fastener 101, which, on the one hand, securely fixes the belt 100, and on the other, allows you to remove it in one movement. Similarly, it is supposed to fasten the vest and fix the belt 100 on the straps. The backpack can be a little more difficult to remove, but the lack of fasteners still allows you to remove it quickly enough.

In one embodiment, the batteries 102 are arranged in a belt 100, vest or belt with straps so as to be in the waist in two vertical rows one above the other, this solution improves heat dissipation from the batteries 102, but increases the height of the layout, which leads to inconvenience when operation: prevents bending of the body.

In another embodiment, the batteries 102 are arranged in a belt 100, vest or belt with straps so as to be in the waist area in two layers (one layer directly around the other), this solution increases the compactness of the assembly of the batteries 102, which reduces the risk of damage to the connections (compared to with a variant with two vertical rows), and increases the reliability of the claimed item of clothing.

In one embodiment, a charge controller is connected to the outputs of each battery 102, such a solution allows you to independently control the charge of each battery 102.

For the case of serial connection, in order to reduce the number of chargers, the batteries 102 are grouped so that the voltage of one group corresponds to the operating voltage of one charge control board (for example, 54.6 V), such groups can be from ten to one. It is impractical to use one group, since then the charger must provide a very high charge voltage, it is not practical to use a separate charger for each battery 102, since a lot of chargers will be required.

The external charger has a charge voltage controller for only all batteries of group 102. For example, to charge one battery 102, a voltage of 4.2 V is required, respectively, if 10 batteries 102 are connected in series, then the voltage of the charger should be 42 V. But the self-charger cannot evenly distribute energy between individual batteries 102 in this group of ten pieces, for these purposes, directly to the output of each battery 102 (for example, 65 in the most preferred embodiment), wires are soldered to the charge controllers (BMS) located directly on the belt (under the protection of non-combustible material), and an external charger plug is already connected to them.

Since all batteries 102 must be connected in series to achieve high voltage (up to 270 V), and all existing BMS are rated at 42 / 54.6 / 63 V, but no more, it is necessary to use BMS for several groups of batteries 102. In one option it is supposed to use 5 BMS boards designed for 13 groups of batteries 102, each (BMS for 54.6 V), the BMS boards are connected in series, which will give a total of about 270 V. Charging is carried out in parallel with five identical chargers, combined into one plug for 10 pins .

In charge mode, the series connection between the five groups of 13 batteries 102 is broken and routed to the appropriate charger plug.

On FIG. 4 shows one possible connection of the charger 401 and BMS 402 to the batteries 102. The gray lines show the wires connecting the BMS 402 to each battery. Locating the BMS 402 outside of a garment would require a plug with multiple pins (twice the number of pins than the number of batteries), which would require such a massive pad to be protected from dust, dirt, splashes. That is, the connection by soldering in this case is much more reliable than the connection by means of a pad.

Because the batteries 102 may become hot during operation and charging, the garment is provided with holes in the non-combustible material to dissipate heat. The holes may be perforations in the area where the batteries 102 are located, the size of the holes is chosen so that welding spatter does not fall on the batteries 102, or hot spatter cannot reach the batteries 102 through these holes, for example, the size of the holes can be from 0.2 mm to 2 mm.

When using basalt fabric or other material that provides air movement, there may be no holes, especially if the batteries 102 are not supposed to be used in hard conditions, at high ambient temperatures, or the batteries themselves are adapted for high discharge and charge currents.

To increase the reliability of the proposed solution, at least one temperature sensor is built into it, which controls overheating and is configured to signal the termination of operation or interrupt the operation of the electrical part of the proposed solution. The sensor or sensors are located in close proximity to the batteries 102.

One sensor or multiple sensors (one for each battery group) can be used. You can use any suitable sensor that sends a signal to the BMS when the temperature exceeds a predetermined threshold when charging.

In another embodiment, at least one sensor is connected to a controller configured to stop the supply of current from the batteries 102 to the welder when the temperature exceeds a threshold.

Another option uses normally closed thermostats, for example 60 degrees Celsius, which are designed to break the common circuit if the temperature rises above 60 degrees Celsius.

Making the claimed solution

At the factory, a belt 100 is sewn from the selected fabric non-combustible material (in other versions, a vest, a belt with straps 301, a backpack). The fabricated product includes battery holders 102: pockets, slots, cavities, latches, magnetic holders, a combination thereof, or any other suitable type of holder. In one embodiment, the batteries 102 may be glued to the wearable item.

The batteries 102 are placed in the holders and connected by wires so as to provide the required output voltage and current. The number of batteries 102 is determined by the mode of operation and the welding equipment used, and the number of batteries 102 also determines the number of holders.

The batteries 102 are electrically connected to at least one BMS, which are also fixed in their holders on the garment. Install at least one temperature sensor in the garment holder near at least one battery 102, electrically connect the sensors to the BMS.

In some embodiments, the implementation of all electrical elements can be arranged in one block and installed in one pocket in the item of clothing.

When assembled, the item of clothing with batteries 102 is structurally and functionally a single device.

The item of clothing is made quick-released, for example, by using one Velcro fastener 100 (as a variant of a fastex fastener, a powerful button), the separation of which allows you to remove the entire garment. Its heaviness contributes to a quick release, which further increases the safety of the claimed solution.

Description of work

Before operation, the batteries 102 embedded in the garment are charged by connecting them to the charger(s). After completion of the charge, the charger is turned off, the set of batteries 102 is switched to the current output mode, the current is supplied to the welding machine, the voltage is applied to the electrode and electric welding is carried out.

In one embodiment, a series-parallel connection of the batteries 102 is used, with the output voltage expected to be 70 volts at higher currents. This implementation improves the security of the device and simplifies its design by reducing the number of BMS to one (respectively, the charger will have only two contacts).

In one embodiment, it is possible to use a compact welder specially adapted to be powered by the batteries 102, which has changed electronics so that it is supplied with direct current. In such a solution, the output voltage will no longer be so high (within 72 V), which will increase the safety of the device and simplify its design, while reducing the number of BMS to one (respectively, the charger will also have only two contacts).

Embodiments are not limited to the examples described above, other embodiments of the solution will become apparent to a person skilled in the art based on the information set forth in the description and knowledge of the prior art, without going beyond the essence and scope of this solution.

Elements mentioned in the singular do not exclude the plurality of elements, unless otherwise specified.

Although exemplary embodiments have been described in detail and shown in the accompanying drawings, it should be understood that such embodiments are illustrative only and are not intended to limit the broader solution, and that this solution should not be limited to the specific arrangements and structures shown and described. as various other modifications may be apparent to those skilled in the art.

Features mentioned in various dependent claims, as well as implementations disclosed in various parts of the description, can be combined to achieve beneficial effects, even if the possibility of such a combination is not explicitly disclosed.

Claims (10)

1. An element of clothing for a welder, containing holders for batteries and built-in batteries, characterized in that the element of clothing is made of non-combustible material. 2. The element of claim 1, wherein the non-combustible material is basalt fabric, asbestos fabric, flame retardant canvas fabric, silica fabric, glass fabric, carbon fabric, aramid fabric, or polyester fabric. 3. The item according to claim 1, in which the item of clothing is one of a belt, a vest, a belt with straps. 4. Element according to claim 1, in which at least one charge controller is additionally installed in the garment element. 5. The cell according to claim 1, wherein the batteries are lithium ion or lithium iron phosphate batteries, the non-combustible material is basalt fabric. 6. The element according to claim. 1, made with the possibility of quick removal. 7. The element according to claim. 1, in which the batteries are arranged in two layers. 8. Element according to claim 1, which contains holes for heat removal from batteries. 9. The element according to claim 1, which contains a temperature sensor and a means for interrupting the current supply, configured to interrupt the current supply when the temperature detected by the sensor exceeds a predetermined threshold value. 10. An element according to claim 1, in which the batteries are electrically connected so as to provide sufficient voltage for welding.