Battery pack and energy storage battery

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack and an energy storage battery. The battery pack comprises a box body, a battery cell and an exhaust beam, the box body comprises a bearing plate, the battery cell and the exhaust beam are both arranged in the box body and supported on the bearing plate, the exhaust beam forms an exhaust channel, an air inlet and an air outlet, the air inlet and the air outlet are communicated with the exhaust channel, and the air inlet and an anti-explosion valve of the battery cell are oppositely arranged; the air outlet is formed in the side, facing the bearing plate, of the exhaust beam, an external exhaust channel is formed in the bearing plate, the air outlet is communicated with the external exhaust channel through a communicating pipe, and the external exhaust channel forms a discharge port in the side, facing the outside of the battery pack, of the bearing plate. Gas or liquid generated during thermal runaway of the battery cell can be sprayed into the exhaust channel and finally discharged to the outside of the battery pack through the discharge channel, so that the safety of the battery pack is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery pack and energy storage battery. Background Technology

[0002] With the rapid development of new energy technologies, the safety of battery packs, as key energy storage components of new energy systems, has become a focus of industry attention. Currently, in order to ensure the reliable operation of battery packs, they are usually equipped with venting structures. In the event of thermal runaway, the high-temperature and high-pressure gases generated by the cells inside the battery pack can be discharged through the venting structure, thereby reducing the internal pressure and suppressing the spread of thermal runaway to a certain extent.

[0003] However, when a battery cell experiences thermal runaway, it not only produces gas but also releases liquids such as high-temperature electrolyte. Existing battery packs only consider gas emissions and do not take into account the issue of liquid emissions, resulting in significant safety hazards for the battery packs. Utility Model Content

[0004] The purpose of this invention is to provide a battery pack and energy storage battery that can discharge gas generated by thermal runaway and liquid generated by thermal runaway.

[0005] This utility model provides a battery pack, including a housing, battery cells, and an exhaust beam;

[0006] The housing includes a support plate, the battery cell and the exhaust beam are placed inside the housing and supported on the support plate, an exhaust channel is formed inside the exhaust beam, and an air inlet and an air outlet connected to the exhaust channel are provided on the exhaust beam;

[0007] The air inlet is positioned opposite to the explosion-proof valve of the battery cell;

[0008] The air outlet is located on the side of the exhaust beam facing the support plate. An external exhaust channel is formed inside the support plate. The air outlet is connected to the external exhaust channel through a connecting pipe. The external exhaust channel forms an outlet on the side of the support plate facing the outside of the battery pack.

[0009] Furthermore, multiple battery cells are provided on both sides of the exhaust beam in the first direction, and multiple battery cells on the same side are arranged side by side along the second direction, which is perpendicular to the first direction;

[0010] The exhaust beam has multiple air inlets on both sides of its first direction. The multiple air inlets on each side are arranged side by side at intervals along the second direction and are arranged in a corresponding manner to the explosion-proof valves of the multiple battery cells on the same side.

[0011] Furthermore, the exhaust beam is provided with a partition, which divides the internal space of the exhaust beam into two exhaust channels that are arranged side by side and spaced apart along a first direction.

[0012] Furthermore, there are two external exhaust channels, and the two external exhaust channels are connected to each other in a one-to-one correspondence with the two exhaust channels.

[0013] Furthermore, a first refractory material layer is bonded to both sides of the exhaust beam in the first direction, so that the air inlets on both sides of the exhaust beam are covered by the corresponding first refractory material layer, and the gas ejected when the battery cell undergoes thermal runaway can break through the first refractory material layer at the corresponding air inlet.

[0014] Furthermore, a second refractory material layer is provided on both sides of the exhaust beam in the first direction. One side of the second refractory material layer is bonded to the first refractory material layer on the same side, and the other side of the second refractory material layer is bonded to the end face of the battery cell on the same side. A through hole is provided in the second refractory material layer at the position opposite to the air inlet.

[0015] Furthermore, the terminals of the battery cell and the explosion-proof valve of the battery cell are located on different surfaces of the battery cell.

[0016] Furthermore, the discharge port is connected to a pipe fitting for connection to an external exhaust pipe or fire venting pipe.

[0017] Furthermore, the support plate is provided with a support beam, and the exhaust beam is detachably installed on the support beam.

[0018] Furthermore, a T-shaped first groove is formed at one end of the exhaust beam facing the support beam, the first groove extends along the second direction, and the two ends of the first groove in the second direction are connected.

[0019] The support beam forms a T-shaped first slider at one end facing the exhaust beam, and the first slider is adapted to be inserted into the first groove.

[0020] Furthermore, a T-shaped second groove is formed inside the first slider, the second groove extends along the second direction, and the two ends of the second groove in the second direction are connected.

[0021] The exhaust beam forms a T-shaped second slider at one end facing the support beam. The second slider extends from the first groove and is fitted into the second groove.

[0022] Furthermore, a first limiting member and a second limiting member are also fastened to the support plate. The first limiting member abuts against one end of the exhaust beam in the second direction, and the second limiting member abuts against the other end of the exhaust beam in the second direction.

[0023] This utility model also provides an energy storage battery, including the battery pack described in any of the above claims.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] The battery pack provided by this utility model includes a housing, battery cells, and an exhaust beam. The housing includes a support plate. The battery cells and the exhaust beam are both located inside the housing and supported on the support plate. An exhaust channel is formed inside the exhaust beam, and an air inlet and an air outlet connected to the exhaust channel are provided on the exhaust beam. The air inlet is positioned opposite to the explosion-proof valve of the battery cell, so that the gas or gas-liquid mixture generated when the battery cell experiences thermal runaway can be injected into the exhaust channel through the air inlet. The air outlet is located on the side of the exhaust beam facing the support plate. An external exhaust channel is formed inside the support plate. The external exhaust channel forms an interface on the side of the support plate facing the inside of the battery pack. The air outlet of the exhaust channel is connected to this interface through a connecting pipe to connect with the external exhaust channel. At the same time, the external exhaust channel forms a discharge port on the side of the support plate facing the outside of the battery pack. Therefore, when a cell experiences thermal runaway, the gas generated by the runaway is injected into the exhaust channel, then flows through the connecting pipe into the external exhaust channel, and is ultimately discharged to the outside of the battery pack through the external exhaust channel. This prevents the gas generated by the cell's thermal runaway from accumulating inside the battery pack and causing the thermal runaway to spread. Furthermore, in practical applications of the battery pack, the support plate is positioned below the cell and the exhaust beam, meaning the external exhaust channel is located below the exhaust channel, and the outlet is positioned towards the bottom of the exhaust beam. Thus, when a cell experiences thermal runaway and generates liquid, the liquid can be injected into the exhaust channel along with the gas, then flow downwards through the connecting pipe into the external exhaust channel, and finally be discharged to the outside of the battery pack through the external exhaust channel. This again prevents the liquid generated by the cell's thermal runaway from accumulating inside the battery pack and causing the thermal runaway to spread.

[0026] Therefore, the exhaust structure of the battery pack formed by the exhaust beam and the external exhaust channel of this application can both exhaust the gas generated by the thermal runaway of the battery cell and the liquid generated by the thermal runaway of the battery cell, thereby improving the safety of the battery pack to a certain extent.

[0027] This utility model also provides an energy storage battery, including the aforementioned battery pack, thus the energy storage battery also has the beneficial effects of the battery pack. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the battery pack provided in an embodiment of the present invention from a first-view perspective;

[0030] Figure 2 for Figure 1 Cross-sectional view at point A in the middle;

[0031] Figure 3 A schematic diagram of the exhaust beam provided in an embodiment of this utility model;

[0032] Figure 4 This is a schematic diagram of the exhaust beam provided in an embodiment of the present utility model;

[0033] Figure 5 This is a schematic diagram of the assembly structure of the exhaust beam and the box tray provided in an embodiment of the present utility model.

[0034] Figure label:

[0035] 1-Support plate, 11-External discharge channel, 12-Connecting pipe, 13-Pipe connector, 14-Support beam, 15-First slider, 16-Second slide groove, 2-Battery cell, 3-Exhaust beam, 31-Exhaust channel, 32-Inlet, 33-Outlet, 34-First refractory material layer, 35-Second refractory material layer, 36-First slide groove, 37-Second slider, 4-First limiting component, a-First direction, b-Second direction. Detailed Implementation

[0036] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0037] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0038] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The following reference Figures 1 to 5 This application describes a battery pack and energy storage battery according to some embodiments.

[0042] This application provides a battery pack, such as Figures 1 to 3 As shown, the battery pack includes a housing, battery cells 2, and an exhaust beam 3. The housing includes a support plate 1. Both the battery cells 2 and the exhaust beam 3 are housed within the housing and supported on the support plate 1. An exhaust channel 31 is formed within the exhaust beam 3, and the exhaust beam 3 is provided with an air inlet 32 ​​and an air outlet 33 that communicate with the exhaust channel 31. The air inlet 32 ​​is positioned opposite to the explosion-proof valve of the battery cell 2, allowing the gas or gas-liquid mixture generated during thermal runaway of the battery cell 2 to be injected into the exhaust channel 31 through the air inlet 32. The air outlet 33 is located on the side of the exhaust beam 3 facing the support plate 1, combined with... Figure 2 As shown, Figure 2 Is Figure 1A partial cross-sectional view of the battery pack obtained by cutting along the second direction b at the exhaust beam 3 is shown. An external exhaust channel 11 is formed within the support plate 1. The external exhaust channel 11 has an interface on the side of the support plate 1 facing the inside of the battery pack. The outlet 33 of the exhaust channel 31 is connected to this interface via a connecting pipe 12, thus connecting to the external exhaust channel 11. Simultaneously, the external exhaust channel 11 has a discharge outlet on the side of the support plate 1 facing the outside of the battery pack. Therefore, when the battery cell 2 experiences thermal runaway, the gas generated by the thermal runaway is injected into the exhaust channel 31, enters the external exhaust channel 11 through the connecting pipe 12, and is ultimately discharged to the outside of the battery pack through the external exhaust channel 11, preventing the gas generated by the thermal runaway of the battery cell 2 from accumulating inside the battery pack and causing the thermal runaway to spread. Meanwhile, in the actual application of the battery pack, the support plate 1 is placed below the cell 2 and the exhaust beam 3, that is, the external exhaust channel 11 is located below the exhaust channel 31, and the air outlet 33 is set on the exhaust beam 3. Thus, when the cell 2 thermally runs away and produces liquid, the liquid can be sprayed into the exhaust channel 31 along with the gas, and then flow down into the external exhaust channel 11 through the connecting pipe 12, and finally discharged to the outside of the battery pack through the external exhaust channel 11, so as to avoid the accumulation of liquid generated by the thermal runaway of the cell 2 in the battery pack and the spread of thermal runaway.

[0043] Therefore, the exhaust structure of the battery pack formed by the exhaust beam 3 and the external exhaust channel 11 of this application can both exhaust the gas generated by the thermal runaway of the cell 2 and the liquid generated by the thermal runaway of the cell 2, thereby improving the safety of the battery pack to a certain extent.

[0044] In this embodiment, preferably, as follows: Figure 2 As shown, the discharge port of the external discharge channel 11 is equipped with a pipe joint 13 for connecting with an external exhaust pipe or fire exhaust pipe to achieve directional discharge or fire exhaust, thereby reducing environmental pollution.

[0045] In one embodiment of this application, preferably, as shown below, Figure 1 As shown, multiple battery cells 2 are provided on both sides of the first direction a of the exhaust beam 3. The multiple battery cells 2 on each side are arranged side by side along the second direction b to form a battery module. The second direction b is perpendicular to the first direction a. Specifically, the exhaust beam 3 has a thickness direction extending along the first direction a and a length direction extending along the second direction b.

[0046] like Figure 3As shown, the two sides of the exhaust beam 3 in the first direction a are the first surface and the second surface, respectively. The battery module opposite to the first surface is the first battery module, and the battery module opposite to the second surface is the second battery module. Multiple air inlets 32 are provided on both the first and second surfaces. The multiple air inlets 32 on the first surface are arranged side-by-side at intervals along the second direction b, and are corresponding to the explosion-proof valves of the multiple cells 2 of the first battery module. Similarly, the multiple air inlets 32 on the second surface are arranged side-by-side at intervals along the second direction b, and are corresponding to the explosion-proof valves of the multiple cells 2 of the second battery module. Therefore, when any cell 2 on either side of the exhaust beam 3 experiences thermal runaway, the generated gas or gas-liquid mixture can be injected into the exhaust channel 31 through the corresponding air inlet 32 ​​to discharge the battery pack.

[0047] In this embodiment, preferably, as follows: Figure 3 As shown, the exhaust beam 3 has a partition inside, which divides the internal space of the exhaust beam 3 into two exhaust channels 31 arranged side by side along the first direction a; for example, the exhaust channel 31 facing the first battery module is the first exhaust channel, and the exhaust channel 31 facing the second battery module is the second exhaust channel. Therefore, when a cell 2 in the first battery module experiences thermal runaway, the gas or gas-liquid mixture it generates will be injected into the first exhaust channel and will not flow into the second exhaust channel, thus preventing the thermal runaway from the first battery module side from spreading to the second battery module side. Similarly, when a cell 2 in the second battery module experiences thermal runaway, the gas or gas-liquid mixture it generates will be injected into the second exhaust channel and will not flow into the first exhaust channel, thus preventing the thermal runaway from the second battery module side from spreading to the first battery module side; thereby effectively improving the safety of the battery pack.

[0048] In this embodiment, preferably, two exhaust channels 11 are formed in the bottom plate of the tray. The two exhaust channels 11 are connected to the two exhaust channels 31 one-to-one through the connecting pipes 12, so that the battery modules on both sides of the exhaust beam 3 have independent exhaust structures and will not affect each other.

[0049] In one embodiment of this application, preferably, as shown below, Figure 4As shown, a first refractory material layer 34 is adhered to both sides of the first direction a of the exhaust beam 3, so that the air inlets 32 on both sides of the exhaust beam 3 are covered and blocked by the corresponding first refractory material layer 34. When any cell 2 experiences thermal runaway, the gas or gas-liquid mixture generated can break through the first refractory material layer 34 at the corresponding air inlet 32 ​​and enter the corresponding exhaust channel 31. At the same time, since the gas or gas-liquid mixture slows down and the pressure decreases after being injected into the exhaust channel 31, it cannot break through the first refractory material layer 34 covering the other air outlets 33 from the inside of the exhaust channel 31. Therefore, the provision of the first refractory material layer 34 can effectively prevent the spread of thermal runaway between cells 2 on the same side. Preferably, the first refractory material layer 34 is heat-insulating paper.

[0050] More preferably, the thickness of the first refractory material layer 34 is 0.1mm-0.2mm, so that the gas or gas-liquid mixture generated when the battery cell 2 thermally runs away can smoothly break through the first refractory material layer 24 and enter the exhaust channel 31.

[0051] In this embodiment, preferably, as follows: Figure 4 As shown, a second refractory material layer 35 is also provided on both sides of the first direction a of the exhaust beam 3; the structures on both sides of the exhaust beam 3 are the same. Taking the first refractory material layer 34, the second refractory material layer 34 and the first battery module located on one side of the first surface of the exhaust beam 3 as an example, one side of the second refractory material layer 35 is bonded to the first refractory material layer 34, and the other side of the second refractory material layer 35 is bonded to the end face of the first battery module. At the same time, multiple through holes are opened on the second refractory material layer 35, and the multiple through holes are connected to multiple through holes on the first surface. Each air inlet 32 ​​is correspondingly arranged, and the multiple through holes are also correspondingly arranged to the explosion-proof valves of the multiple cells 2 of the first battery module. Therefore, when assembling the exhaust beam 3 with the first battery module, the relative positions between the exhaust beam 3 and the battery module can be positioned through the through holes on the second refractory material layer 35. At the same time, by setting the second refractory material layer 35, a seal can also be achieved between the battery module and the exhaust beam 3, preventing gas or gas-liquid mixture generated during thermal runaway of the battery module from splashing into the interior of the battery pack. Preferably, the thickness of the second refractory material layer 35 is 2mm-5mm, so that the second refractory material layer 35 can play a good sealing role between the cell 2 and the first refractory material layer 34, and maintain an appropriate distance between the explosion-proof valve of the cell 2 and the first refractory material layer, so that the gas or gas-liquid mixture generated during thermal runaway of the cell 2 can be smoothly ejected and break through the first refractory material layer 34.

[0052] In this embodiment, preferably, the material of the second refractory layer is aerogel, alumina ceramic, glass fiber, or mica, etc.

[0053] In one embodiment of this application, preferably, for the battery cells 2 on both sides of the exhaust beam 3, their terminals and explosion-proof valves are located on different surfaces of the battery cells 2; for example, the explosion-proof valve is provided on the surface of the battery cell 2 facing the exhaust beam 3, and the terminal is provided on the side of the battery cell 2 away from the exhaust beam 3. This achieves thermoelectric separation, so that when the battery cell 2 experiences thermal runaway, the gas or gas-liquid mixture it generates can enter the exhaust channel 31 in the exhaust beam 3, and will not spread to the terminal of the battery cell 2 and affect the high and low voltage connection of the battery cell 2, thereby avoiding short circuits in the battery cell 2 and other safety problems.

[0054] In one embodiment of this application, preferably, as shown below, Figure 5 As shown, a support beam 14 is provided on the support plate 1, and the exhaust beam 3 is detachably installed on the support beam 14. Thus, when transporting the battery pack, the exhaust beam 3 can be disassembled to reduce the height required for transportation and reduce transportation costs.

[0055] In this embodiment, preferably, a T-shaped groove is formed at one end of the exhaust beam 3 facing the support beam 14, and a slot is formed on one side of the first groove 36 facing the support beam 14. The first groove 36 extends along a second direction b, and both ends of the first groove 36 in the second direction b are connected. A T-shaped first slider 15 is formed at one end of the support beam 14 facing the exhaust beam 3. The first slider 15 can be fitted into the first groove 36 with one end of the first groove 36 in the second direction b, thereby achieving a detachable connection between the exhaust beam 3 and the support beam 14.

[0056] More preferably, such as Figure 5 As shown, a T-shaped second groove 16 is formed within the first slider 15. The second groove 16 has an opening on the side facing the exhaust beam 3, and extends along the second direction b, with both ends of the second groove 16 connected in the second direction b. A T-shaped second slider 37 is also formed at the end of the support beam 14 facing the exhaust beam 3. The second slider 37 extends from the inside of the first groove 36, and when the first slider 15 is inserted into the first groove 36, the second slider 37 can also be fitted into the second groove 16, thereby making the connection between the exhaust beam 3 and the support beam 14 more stable and preventing the exhaust beam 3 from shaking.

[0057] In this embodiment, preferably, as follows: Figure 5 As shown, a first limiting member 4 and a second limiting member are also fastened to the support plate 1. The first limiting member 4 can abut against one end of the exhaust beam 3 in the second direction b, and the second limiting member can abut against the other end of the exhaust beam 3 in the second direction b. Thus, by installing the first limiting member 4 and the second limiting member on the support plate 1, the exhaust beam 3 can be limited along the second direction b, so that the exhaust beam 3 will not slide along the second direction b.

[0058] This application also provides an energy storage battery, including the battery pack of any of the above embodiments.

[0059] In this embodiment, the energy storage battery includes a battery pack, and therefore the energy storage battery has all the beneficial effects of the battery pack, which will not be described in detail here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack, characterized in that, Includes the enclosure, battery cells, and exhaust beam; The housing includes a support plate, the battery cell and the exhaust beam are both located inside the housing and supported on the support plate, an exhaust channel is formed inside the exhaust beam, and an air inlet and an air outlet connected to the exhaust channel are provided on the exhaust beam. The air inlet is positioned opposite to the explosion-proof valve of the battery cell; The air outlet is located on the side of the exhaust beam facing the support plate. An external exhaust channel is formed inside the support plate. The air outlet is connected to the external exhaust channel through a connecting pipe. The external exhaust channel forms an outlet on the side of the support plate facing the outside of the battery pack.

2. The battery pack according to claim 1, characterized in that, Multiple battery cells are provided on both sides of the exhaust beam in the first direction, and multiple battery cells on the same side are arranged side by side along the second direction, which is perpendicular to the first direction. The exhaust beam has multiple air inlets on both sides of its first direction. The multiple air inlets on each side are arranged side by side at intervals along the second direction and are arranged in a corresponding manner to the explosion-proof valves of the multiple battery cells on the same side.

3. The battery pack according to claim 2, characterized in that, The exhaust beam is provided with a partition, which divides the internal space of the exhaust beam into two exhaust channels that are arranged side by side and spaced apart along a first direction.

4. The battery pack according to claim 3, characterized in that, There are two external exhaust channels, and the two external exhaust channels are connected to each other in a one-to-one correspondence with the two exhaust channels.

5. The battery pack according to claim 2, characterized in that, A first refractory material layer is bonded to both sides of the exhaust beam in the first direction, so that the air inlets on both sides of the exhaust beam are covered by the corresponding first refractory material layer, and the gas ejected when the battery cell thermally runs away can break through the first refractory material layer at the corresponding air inlet.

6. The battery pack according to claim 5, characterized in that, The exhaust beam is provided with a second refractory material layer on both sides in the first direction. One side of the second refractory material layer is bonded to the first refractory material layer on the same side, and the other side of the second refractory material layer is bonded to the end face of the battery cell on the same side. A through hole is provided in the second refractory material layer at the position opposite to the air inlet.

7. The battery pack according to claim 1, characterized in that, The terminals of the battery cell and the explosion-proof valve of the battery cell are located on different surfaces of the battery cell.

8. The battery pack according to claim 1, characterized in that, The discharge port is connected to a pipe fitting for connection to an external exhaust pipe or fire venting pipe.

9. The battery pack according to claim 2, characterized in that, The support plate is provided with a support beam, and the exhaust beam is detachably installed on the support beam.

10. The battery pack according to claim 9, characterized in that, The exhaust beam has a T-shaped first groove at one end facing the support beam. The first groove extends along the second direction, and the two ends of the first groove in the second direction are connected. The support beam forms a T-shaped first slider at one end facing the exhaust beam, and the first slider is adapted to be inserted into the first groove.

11. The battery pack according to claim 10, characterized in that, A T-shaped second groove is formed inside the first slider, the second groove extends along the second direction, and the two ends of the second groove in the second direction are connected. The exhaust beam forms a T-shaped second slider at one end facing the support beam. The second slider extends from the first groove and is fitted into the second groove.

12. The battery pack according to claim 10, characterized in that, The support plate is also fastened with a first limiting member and a second limiting member. The first limiting member abuts against one end of the exhaust beam in the second direction, and the second limiting member abuts against the other end of the exhaust beam in the second direction.

13. An energy storage battery, characterized in that, The battery pack includes any one of claims 1 to 9.

Images