CN223414205U

CN223414205U - Battery box

Info

Publication number: CN223414205U
Application number: CN202422760566.6U
Authority: CN
Inventors: 夏超; 王剑; 蒙祥书; 葛晓波
Original assignee: SUZHOU DURAPOWER TECHNOLOGY CO LTD
Current assignee: SUZHOU DURAPOWER TECHNOLOGY CO LTD
Priority date: 2024-11-13
Filing date: 2024-11-13
Publication date: 2025-10-03
Anticipated expiration: 2034-11-13

Abstract

The utility model relates to the technical field of energy storage batteries, and discloses a battery box. The battery box comprises a box body, a battery module, a liquid cooling medium and a fan. The battery module is arranged in the box body, meanwhile, the liquid cooling medium is contained in the box body, the battery module is immersed in the liquid cooling medium, and the liquid cooling medium can radiate heat of the battery module. Meanwhile, the fan liquid is arranged in the box body, the fan is immersed in the liquid cooling medium, and the fan is used for stirring the liquid cooling medium. Therefore, the liquid cooling medium can be stirred by the fan and pushed to various places inside the box body, and a plurality of surfaces of the battery module can be radiated, so that the battery module is prevented from being radiated locally and is further required to be cooled and radiated wholly through heat conduction inside the battery cell.

Description

Battery box

Technical Field

The utility model relates to the technical field of energy storage batteries, in particular to a battery box.

Background

The battery box is a group battery composed of a plurality of single batteries, a box body, a battery management system, related installation structural members (devices) and the like, and is provided with a battery box structure, battery box monitoring equipment, a battery box connector, battery box ring control equipment and the like which meet the standard.

In general, when cooling the battery cell in the battery box, the liquid cooling plate is arranged at the bottom of the battery cell, the liquid cooling medium circulates in the plate to exchange heat, and the liquid cooling plate and the box body can be integrated in structure. However, the liquid cooling plate is generally arranged at the bottom of the battery core to cool and dissipate heat, and belongs to local contact type heat dissipation, the whole cooling and heat dissipation are realized through heat conduction in the battery core, an external water channel and a water cooling unit are also required to be arranged by using the liquid cooling plate, so that the cost is high, and in addition, the short circuit risk of the module is possibly caused by liquid leakage of the liquid cooling plate.

Therefore, a battery box is needed to solve the problem of small heat dissipation range of local contact heat dissipation, realize large-area heat dissipation and improve heat dissipation efficiency.

Disclosure of utility model

The utility model aims to provide a battery box which can solve the problem of small heat dissipation range of local contact heat dissipation, realize large-area heat dissipation and improve heat dissipation efficiency.

The technical scheme adopted by the utility model is as follows:

A battery box, comprising:

the box body is internally provided with a liquid cooling medium which is used for radiating components in the box body;

The battery module is arranged in the box body and is immersed in the liquid cooling medium;

And the fan is arranged in the box body, is immersed in the liquid cooling medium and is used for stirring the liquid cooling medium.

As an alternative scheme of the battery box, the number of the battery modules is at least two, the number of the fans is at least one, and the fans are arranged between the at least two battery modules;

And/or the fan is fixedly connected to the bottom of the inner side of the box body.

As an alternative to the battery case, the liquid level of the liquid cooling medium in the case is equal to or higher than the top surface of the battery module.

As an alternative scheme of the battery box, a bracket is arranged in the box body, and the battery module is arranged on the bracket and used for suspending the battery module in the box body.

As an alternative to the battery case, the case is made of a metal material.

As an alternative scheme of the battery box, the box body is formed by connecting plate bodies through full welding;

and/or the box body comprises a body and a box cover which are connected, and a sealing device is arranged between the body and the box cover.

As an alternative scheme of the battery box, the battery box further comprises a battery management system, wherein the battery management system is arranged in the box body and is electrically connected with the battery module for monitoring the condition of the battery module.

As an alternative scheme of the battery box, the box body is provided with a communication port, and the communication port is electrically connected with the battery management system and is used for transmitting signals received by the battery management system to the outside.

As an alternative scheme of the battery box, the box body is provided with a high-voltage socket, the high-voltage socket comprises a positive electrode socket and a negative electrode socket, the positive electrode socket is connected with the positive electrode of the battery module, the negative electrode socket is connected with the negative electrode of the battery module, and the high-voltage socket is used for supplying power to the outside.

As an alternative scheme of the battery box, a connecting piece is arranged in the box body, one end of the connecting piece is connected with the positive electrode socket, the other opposite end of the connecting piece is connected with the positive electrode socket, and the connecting piece is connected with the battery module and is used for connecting the battery module in series or in parallel.

The beneficial effects of the utility model are as follows:

The utility model provides a battery box, a battery module, a liquid cooling medium and a fan are all arranged in a box body, the battery module and the fan are immersed in the liquid cooling medium, the fan is used for stirring the liquid cooling medium, so that the liquid cooling medium can be distributed in each area of the box body and the battery module through stirring of the liquid cooling medium by the fan, a plurality of surfaces of the battery module can be contacted with the liquid cooling medium, at the moment, the liquid cooling medium can radiate the battery module, the battery module can radiate heat in a large area, the condition that a cooling system can radiate heat locally only does not happen, the integral cooling and radiating can not happen, and the integral cooling and radiating can be realized through heat conduction in an electric core, so that the damage to the whole battery module and even the battery box can be avoided due to any occurrence of the heat conduction problem.

Drawings

Fig. 1 is a first schematic view of a battery box according to an embodiment of the present utility model;

Fig. 2 is a second schematic view of a battery box according to an embodiment of the present utility model;

Fig. 3 is a third schematic view of a battery box according to an embodiment of the present utility model;

Fig. 4 is a cross-sectional design view of a battery box provided by an embodiment of the present utility model.

In the figure:

1. 11, main body 12, box cover;

2. The battery module, 3, a liquid cooling medium, 4, a fan, 5, a connecting component, 6, a battery management system, 7, a communication port;

8. High-voltage socket, 81, positive electrode socket, 82, negative electrode socket;

9. and a fuse.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1, the present embodiment discloses a battery box including a box body 1, a liquid cooling medium 3, a battery module 2, and a fan 4. The inside of the box body 1 is accommodated with a liquid cooling medium 3, and the liquid cooling medium 3 is used for radiating components in the box body 1. The battery module 2 is arranged in the box body 1, and the battery module 2 is immersed in the liquid cooling medium 3, so that the liquid cooling medium 3 can radiate heat of the battery module 2. A fan 4 is provided in the tank 1, the fan 4 is immersed in the liquid cooling medium 3, and the fan 4 serves to agitate the liquid cooling medium 3. The agitated liquid cooling medium 3 can be pushed in various directions inside the case 1, and heat can be radiated to the various sides of the battery module 2. The heat on the battery module 2 is taken away from the battery module 2 through the contact with the battery module 2 by the liquid cooling medium 3, the stirring of the fan 4 is carried out, the liquid cooling medium 3 with the heat of the battery module 2 is contacted with the box body 1, the heat taken out from the battery module 2 is transferred to the box body 1 by the liquid cooling medium 3, and the heat exchange is carried out between the liquid cooling plate and the outside through the box body 1.

Optionally, the number of the battery modules 2 is set to at least two, avoiding the waste of the accommodation space of the case 1. For example, the battery modules 2 may be provided in 2, 3, or 4. In this embodiment, the number of battery modules 2 is two, the number of battery modules 2 in the case 1 is too large, the space between the battery modules 2 is small, the volume of the liquid cooling medium 3 flowing into the battery modules 2 is small, and the heat dissipation function of the liquid cooling medium 3 is affected.

Alternatively, the number of fans 4 is set to at least 1, and the fans 4 can agitate the liquid cooling medium 3, thereby improving the cooling efficiency of the liquid cooling medium 3. The number of fans 4 may be set to 1, 2, or 3, for example. If the number of fans 4 is too small, for example, only one fan 4 is arranged in the box 1, the arrangement will result in insufficient power transmitted to the liquid cooling medium 3, and the heat dissipation efficiency of the liquid cooling medium 3 will also be reduced, if the number of fans 4 is too large, for example, 10 fans 4 are arranged in the box 1, the arrangement will result in redundancy of the fans 4, too many fans 4 are not needed to stir the liquid cooling medium 3 in the box 1, and too many fans 4 occupy a lot of volume in the box 1, so that other components cannot be placed in the box 1. In this embodiment, the fans 4 are arranged to be two, and the two fans 4 are connected in a vertically stacked manner, so that not only can the occupied area of the bottom surface inside the box body 1 be saved, but also the liquid cooling medium 3 with a higher height can be stirred, and further the heat dissipation efficiency of the liquid cooling medium 3 can be improved, but also the battery module 2 with a higher height can be subjected to multi-surface simultaneous heat dissipation.

Alternatively, as shown in fig. 1-4, in the present embodiment, the fan 4 is disposed between two battery modules 2, and since the fan 4 is disposed between two battery modules 2, the liquid cooling medium 3 stirred by the fan 4 can dissipate heat from the surfaces of the two battery modules 2 corresponding to the fan 4 and simultaneously dissipate heat from the two battery modules 2, so that the heat dissipation efficiency of the liquid cooling medium 3 can be improved and heat can be dissipated from multiple battery modules 2 simultaneously. In other embodiments, the fan 4 may be disposed at a corner of the bottom surface of the interior of the case 1, so long as the fan 4 is disposed in the case 1 and is capable of stirring the liquid cooling medium 3.

Optionally, as shown in fig. 1-4, in this embodiment, the fan 4 is fixedly connected to the bottom of the inner side of the box 1, so that the position of the fan 4 is fixed, and the fan 4 is prevented from being driven by the flowing liquid cooling medium 3 to randomly move in the box 1 during working, so that the fan 4 collides with components located in the box 1, such as the battery module 2, and the like, so that the fan 4 or the components located in the box 1 are damaged, and the normal working of the battery box is further affected. In other embodiments, the fan 4 may be detachably connected to the case 1 or slidingly connected with the case with avoidance, so long as the fan 4 does not collide with other components.

Specifically, in the present embodiment, the liquid level of the liquid cooling medium 3 in the case 1 is equal to or higher than the top surface of the battery module 2 such that the battery module 2 is completely submerged by the liquid cooling medium 3 in the case 1. The battery module 2 is completely immersed by the liquid cooling medium 3, so that all the peripheral surfaces of the battery module 2 are in contact with the liquid cooling medium 3, when the liquid cooling medium 3 is stirred by the fan 4 to radiate the battery module 2, the liquid cooling medium 3 can radiate all the peripheral surfaces of the battery module 2, so that the radiating efficiency of the liquid cooling medium 3 can be improved, and as the liquid cooling medium 3 can radiate all the peripheral surfaces of the battery module 2, the condition that a cooling system can radiate only locally can be avoided, and further the situation that the whole cooling and radiating are realized through heat conduction in the battery core when the whole radiating is required is avoided.

Alternatively, the liquid cooling medium 3 is made of an insulating material having a high electrical resistivity, which means that they do not conduct electricity at the allowable voltage, so that the liquid cooling medium 3 made of an insulating material is contained in the case 1 to avoid a short circuit inside the case 1 and thermal runaway. The material of the liquid cooling medium 3 may be, for example, cooling oil or cooling liquid or the like. In the present embodiment, the liquid cooling medium 3 is made of cooling oil. The cooling oil is not conductive at the allowable voltage, and the cooling oil is characterized in that it does not contain water, so that its heat balance ability is more sensitive, heat conduction ability is better, and the battery module 2 can be more effectively maintained at the optimal operating temperature. In addition, the cooling oil has smaller corrosiveness to components in the box body 1 and better lubricating performance.

Specifically, as shown in fig. 1-3, in this embodiment, a bracket is disposed inside a box 1, and a battery module 2 is disposed on the bracket, so that the battery module 2 can be suspended in the box, and the battery module 2 can be suspended, so that a liquid cooling medium 3 can flow from the bottom of the battery module 2, and further heat exchange is performed on the bottom of the battery module 2, so that the situation that the local temperature of the battery module 2 is too high due to local uneven heat dissipation, and further explosion of the battery module 2 is avoided.

It should be noted that, the support is an existing structure, the support is set in the battery box in a conventional manner in the art, any support in the prior art may be adopted in this embodiment, the battery module 2 is placed on the support in any manner in the prior art, and the support is placed in the box 1 in any manner in the prior art, so long as the suspension setting of the battery module 2 and the box 1 are realized, and no specific description is provided.

Optionally, the case 1 is made of a metal material, which has good heat conduction performance, so that the heat exchange effect between the liquid cooling medium 3 contacting the inner wall of the case 1 and the outside of the case 1 is better. Illustratively, the case 1 material may be graphene or stainless steel material. In this embodiment, the case 1 is made of stainless steel material, which not only has better cost performance, but also has the characteristics of low thermal conductivity, mature welding process and good performance after welding.

In order to prevent leakage of electrolyte in the battery case, protect the battery module 2 from the external environment, and maintain pressure balance in the case 1, the battery case needs to be sealed with good sealability during operation. Specifically, in this embodiment, the case 1 is formed by connecting plate bodies through full-welding, and the full-welded case 1 has better sealing property, and can prevent electrolyte leakage in the battery case, protect the battery module 2 from the influence of external environment, and maintain the pressure balance in the case 1, so as to ensure the normal operation of the battery case.

Optionally, in this embodiment, as shown in fig. 1 to 4, the case 1 includes a main body 11 and a case cover 12 that are connected, a sealing device is disposed between the main body 11 and the case cover 12, and the split design of the main body 11 and the case cover 12 can more conveniently install components into the case 1, and the sealing device is disposed between the main body 11 and the case cover 12, so that the case 1 can have good tightness to avoid leakage of electrolyte in the battery case. In other embodiments, the case 1 may not be configured as a split, so long as components can be conveniently installed into the case 1, and the overall tightness of the case 1 is not damaged, and redundant description is not made.

The BATTERY management system 6 (BATTERY MANAGEMENT SYSTEM, BMS) is commonly called as a BATTERY care provider or a BATTERY manager, and is mainly used for intelligently managing and maintaining each BATTERY unit, monitoring the state of the BATTERY, and preventing the BATTERY from being overcharged and overdischarged so as to prolong the service life of the BATTERY. Specifically, in this embodiment, as shown in fig. 1-3, the battery box further includes a battery management system 6, where the battery management system 6 is disposed in the box 1, and the battery management system 6 is electrically connected with the battery module 2, so that the battery management system 6 can obtain the state of the battery module 2, so as to ensure the normal operation of the battery module 2, and prolong the service lives of the battery module 2 and the battery box.

It should be noted that, the battery management system 6 is an existing structure, the battery management system 6 is disposed in a battery box in a conventional manner in the art, any battery management system 6 in the prior art may be adopted in this embodiment, and any connection manner in the prior art is used to connect with the battery module 2, so long as the monitoring function of the battery management system 6 on the battery module is implemented, and no specific description will be given.

Specifically, the present invention relates to a method for manufacturing a semiconductor device. As shown in fig. 1-3, the box 1 is provided with a communication port 7, one end of the communication port 7 is electrically connected with the battery management system 6, and the other end of the communication port 7 is electrically connected with an external receiving mechanism, so that signals received by the battery management system 6 are transmitted to the outside.

Specifically, as shown in fig. 1-3, in this embodiment, a high-voltage socket 8 is provided on the case 1, the high-voltage socket 8 includes a positive socket 81 and a negative socket 82, the positive socket 81 is connected with the positive pole of the battery module 2, the negative socket 82 is connected with the negative pole of the battery module 2, the positive socket 81 and the negative socket 82 are respectively electrically connected with the mechanism to be powered, and power is supplied to the mechanism to be powered, so that the mechanism to be powered can work normally.

It should be noted that, the high-voltage socket 8 is an existing structure, the setting of the high-voltage socket 8 in the battery box is a conventional setting in the art, any high-voltage socket 8 in the prior art may be adopted in this embodiment, and any connection mode in the prior art is used to connect with the battery module 2, so long as it is ensured that the battery module 2 can supply power to the power supply mechanism through the high-voltage socket 8, and no specific description is provided.

The fuse 9 can be directly fused when the inflow current is excessive, and then the circuit is cut off, so that the safety of the components which are not damaged is protected. Specifically, as shown in fig. 1-2, in this embodiment, a fuse 9 is further disposed inside the case 1, one end of the fuse 9 is electrically connected to the negative electrode socket 82, and the opposite end is electrically connected to the negative electrode of the battery module 2, so that when the battery module 2 or the mechanism to be powered fails, excessive current flows into the fuse 9 and is blown, so as to protect the safety of other mechanisms on the circuit.

It should be noted that, the fuse 9 is an existing structure, the fuse 9 is disposed in the battery box as is conventional in the art, any fuse 9 in the prior art may be adopted in this embodiment, and any connection manner in the prior art is used to electrically connect with the battery module 2 and the negative electrode socket 82, so long as the protection function of the fuse 9 on the whole circuit is achieved, and no specific description is given.

Specifically, as shown in fig. 1-2, in the present embodiment, a connection assembly 5 is provided inside the case, and the connection assembly 5 includes a first connection member, a second connection member, and a third connection member, and the battery module 2 is provided with at least two. The second connection member is electrically connected with at least two battery modules 2 for connecting at least two of the battery modules in series or in parallel to form a battery module group. The battery module group is connected into a closed loop to supply power to the mechanism to be detected, and the battery module group is formed by connecting at least two battery modules 2 in series or in parallel, so that the battery modules 2 with the same specification and the same number can output different voltages to supply power to the mechanism to be powered. One end of the first connecting piece is electrically connected with the positive electrode socket 81, the other opposite end of the first connecting piece is electrically connected with the battery module group, one end of the third connecting piece is electrically connected with the negative electrode socket 82, and the other opposite end of the third connecting piece is electrically connected with the battery module group, so that the battery module group forms a closed loop, and the battery module group supplies power to a power supply mechanism.

Optionally, the connection component 5 may be a hard copper bar, graphene or conductive carbon black, in this embodiment, the connection component 5 is a hard copper bar, and the hard copper bar may be insulated by a sleeve heat shrink tube or in-mold injection molding, so as to ensure electrical safety, and the connection component is suitable for various electrical devices and power distribution devices, and the hard copper bar has good conductive performance, is suitable for high current transmission, can bear larger current load, is suitable for various electrical devices and electronic products, and is more suitable for being used in a battery box provided with cooling oil.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A battery box, comprising:

A box (1), wherein the box (1) contains a liquid cooling medium (3), and the liquid cooling medium (3) is used to dissipate heat from components in the box (1);

A battery module (2), the battery module (2) being placed in the box (1), and the battery module (2) being immersed in the liquid cooling medium (3);

A fan (4), the fan (4) is placed in the box (1), the fan (4) is immersed in the liquid cooling medium (3), and the fan (4) is used to stir the liquid cooling medium (3).

2. The battery box according to claim 1, characterized in that the number of the battery modules (2) is set to at least two, the number of the fans (4) is set to at least one, and the fan (4) is provided between at least two of the battery modules (2);

And/or, the fan (4) is fixedly connected to the bottom of the inner side of the box (1).

3. The battery box according to claim 1, characterized in that the liquid level of the liquid cooling medium (3) in the box body (1) is equal to or higher than the top surface height of the battery module (2).

4. The battery box according to claim 1 is characterized in that a bracket is provided inside the box body (1), and the battery module (2) is placed on the bracket, which is used to suspend the battery module (2) in the box body (1).

5. The battery box according to any one of claims 1 to 4, characterized in that the box body (1) is made of metal material.

6. The battery box according to any one of claims 1 to 4, characterized in that the box body (1) is formed by connecting plates through full welding;

And/or, the box body (1) comprises a main body and a box cover (12) connected to each other, and a sealing device is provided between the main body and the box cover (12).

7. The battery box according to any one of claims 1-4 is characterized in that the battery box also includes a battery management system (6), the battery management system (6) is arranged in the box body (1), and the battery management system (6) is electrically connected to the battery module (2) for monitoring the condition of the battery module (2).

8. The battery box according to claim 7 is characterized in that a communication port (7) is provided on the box body (1), and the communication port (7) is electrically connected to the battery management system (6) for transmitting the signal received by the battery management system (6) to the outside world.

9. The battery box according to any one of claims 1 to 4, characterized in that a high-voltage socket (8) is provided on the box body (1), and the high-voltage socket (8) includes a positive socket (81) and a negative socket (82), the positive socket (81) is connected to the positive pole of the battery module (2), and the negative socket (82) is connected to the negative pole of the battery module (2), and the high-voltage socket (8) is used to supply power to the outside world.

10. The battery box according to claim 9, characterized in that a connecting assembly (5) is provided inside the box body (1), the connecting assembly (5) comprises a first connecting member, a second connecting member and a third connecting member, and the battery module (2) is provided with at least two;

The second connecting member is electrically connected to at least two of the battery modules (2) and is used to connect the at least two battery modules (2) in series or in parallel to form a battery module group;

One end of the first connector is electrically connected to the positive electrode socket (81), and the other end is electrically connected to the battery module group;

One end of the third connector is electrically connected to the negative electrode socket (82), and the other end is electrically connected to the battery module group.