Battery module and battery

Abstract

This utility model provides a battery module and a battery, relating to the field of battery technology. The battery module includes multiple pouch cells and multiple separator components, which are alternately arranged along the thickness direction of the pouch cells. Each separator component includes a heat-insulating layer and a phase change material layer bonded together. The heat-insulating layer and the phase change material layer are respectively bonded to two adjacent pouch cells, and each pouch cell is bonded to at least one phase change material layer. When a pouch cell experiences thermal runaway, the heat-insulating layer slows down the heat transfer to adjacent pouch cells, and the phase change material layer rapidly absorbs heat through phase change, thereby achieving rapid cooling of the pouch cell experiencing thermal runaway and preventing adjacent pouch cells from reaching their thermal runaway temperature. By setting the separator components, the impact of a pouch cell experiencing thermal runaway on adjacent pouch cells can be reduced, and the spacing between pouch cells can be reduced, thereby improving the battery's energy density.

Description

Technical Field

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

[0002] With the development of battery technology, ternary lithium soft-pack cells are widely used in batteries due to their advantages such as high energy density.

[0003] When using batteries with ternary lithium-ion pouch cells, these cells are at risk of thermal runaway. To meet the requirements for thermal runaway control, the spacing between the ternary lithium-ion pouch cells is relatively large to minimize the impact on the others should one cell experience thermal runaway. However, this large spacing results in a lower energy density for the battery. Utility Model Content

[0004] In view of this, this application provides a battery to solve the problem that the large spacing between pouch cells leads to a low energy density of the battery.

[0005] According to one aspect of this application, a battery is provided, the battery including a battery module, the battery module including a plurality of pouch cells and a plurality of separator components, the plurality of pouch cells and the plurality of separator components being alternately arranged along the thickness direction of the pouch cells, the separator component including a heat insulation layer and a phase change material layer bonded together, the heat insulation layer and the phase change material layer being bonded to two adjacent pouch cells respectively, and each pouch cell being bonded to at least one phase change material layer.

[0006] Preferably, the battery module further includes multiple mounting frames, each mounting frame having at least one of the pouch cells mounted on it, and the multiple mounting frames are stacked along the thickness direction.

[0007] For two adjacent mounting frames among the plurality of mounting frames, one mounting frame is provided with a first fastening member and the other mounting frame is provided with a second fastening member. At least a portion of the second fastening member protrudes relative to the mounting frame, and the second fastening member has a fastening opening, into which the first fastening member is inserted.

[0008] Preferably, for two adjacent mounting frames among the plurality of mounting frames, the mounting frame with the first fastening member is also provided with a corresponding abutment member. The abutment member includes two abutment blocks arranged at intervals, and the second fastening member is located between the two abutment blocks. The second fastening member abuts against the two abutment blocks respectively.

[0009] According to another aspect of this application, a battery is provided, the battery including a housing and the aforementioned battery module, the battery module being disposed inside the housing, the housing including a barrel and a cover, the barrel having an opening, the battery also including a waterproof bracket disposed inside the barrel, the waterproof bracket and the inner sidewall of the barrel forming a sealing groove, the sealing groove being filled with sealant, and a portion of the cover extending into the sealing groove so as to cover the opening.

[0010] Preferably, the soft-pack battery cell includes an encapsulation film, an electrode assembly, and a tab. The encapsulation film includes an encapsulation body and a top sealing edge connected together. The electrode assembly is connected to the tab and is covered by the encapsulation body. Part of the tab is located inside the top sealing edge, and another part of the tab extends out from the top sealing edge.

[0011] The battery also includes a sealant and a potting compound. The sealant is sleeved on the outside of the battery module. Both the battery module and the sealant are disposed inside the housing. The sealant contacts the inner sidewall of the housing to divide the internal space of the housing into a first space and a second space. The encapsulation body of the encapsulation film of any of the pouch cells is located in the first space, and at least a portion of the top sealing edge is located in the second space. The first space is filled by the potting compound.

[0012] Preferably, the battery further includes an explosion-proof valve, the housing has an installation port that communicates with the second space, and the explosion-proof valve is disposed on the installation port.

[0013] Preferably, the battery further includes two end plates, which are respectively disposed on both sides of the battery module in the thickness direction, and at least one end plate has an insertion interface on one side of the soft-pack cell in the length direction.

[0014] The sealing element includes a sealing body and a protrusion. The protrusion protrudes from the sealing body, the sealing body is sleeved on the outside of the battery module, and the protrusion is inserted into the connector.

[0015] Preferably, the battery further includes a data acquisition board and a battery management system (BMS). The data acquisition board is disposed on one side of the battery module in the length direction, and the BMS is disposed on the side of an end plate facing away from the battery module in the thickness direction. The plurality of pouch cells are electrically connected to the data acquisition board, and the data acquisition board is electrically connected to the BMS.

[0016] Preferably, the battery further includes an insulating pad disposed inside the housing, and the side of the acquisition plate facing away from the battery module is in contact with the insulating pad.

[0017] Preferably, the battery further includes fasteners that are fitted over the exterior of the battery module and the two end plates that form an integral unit.

[0018] The battery module of this application includes multiple pouch cells and multiple separator components. The pouch cells and separator components are alternately arranged along the thickness direction of the pouch cells. Each separator component includes a heat-insulating layer and a phase change material layer bonded together, with the heat-insulating layer and phase change material layer bonded to two adjacent pouch cells respectively. When one pouch cell experiences thermal runaway, the heat-insulating layer slows down heat transfer to adjacent pouch cells, and the phase change material layer rapidly absorbs heat through its own phase change, thus rapidly cooling the pouch cell experiencing thermal runaway and preventing adjacent pouch cells from reaching their thermal runaway temperature. Therefore, by incorporating separator components including heat-insulating layers and phase change material layers, the impact of a thermally runaway pouch cell on adjacent pouch cells can be reduced, and the spacing between pouch cells can be decreased, thereby improving the battery's energy density. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 An exploded view of the battery is shown;

[0021] Figure 2 A schematic diagram of the internal structure of the shell is shown;

[0022] Figure 3 This shows another structural diagram of the interior of the shell;

[0023] Figure 4 A schematic diagram of the end plate structure is shown;

[0024] Figure 5 A schematic diagram of the separator component is shown;

[0025] Figure 6 A schematic diagram of the structure of a pouch cell is shown;

[0026] Figure 7 A schematic diagram of the mounting frame is shown;

[0027] Figure 8 A schematic diagram of the seal is shown.

[0028] Icons: 1-Battery module; 11-Soft-pack cell; 111-Encapsulation body; 112-Top seal; 113-Side seal; 114-Taper; 12-Mounting frame; 121-First plate; 122-Second plate; 123-Third plate; 13-Separation assembly; 131-Insulation layer; 132-Phase change material layer; 14-First fastener; 15-Second fastener; 151-Fasting opening; 16-Abutting block; 2-Shell; 21-Barrel; 22-Lid; 221-Mounting port; 3-Sealing element; 31-Sealing body; 32-Protrusion; 4-End plate; 41-Insertion interface; 51-Explosion-proof valve; 52-Fastener; 53-BMS; 54-Collection board; 55-Insulating pad; 56-Waterproof bracket; L1-Length direction; L2-Width direction; L3-Thickness direction. Detailed Implementation

[0029] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0030] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0031] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0032] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0033] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0034] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0035] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0036] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0037] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0038] The following will refer to Figures 1 to 8 This application describes the battery module and battery. Figures 1 to 8In the middle, the length direction L1, width direction L2, and thickness direction L3 of the soft-pack battery cell 11 are perpendicular to each other.

[0039] According to one aspect of this application, a battery module is provided, such as... Figures 1 to 8 As shown, the battery module 1 includes multiple pouch cells 11 and multiple separator components 13. The multiple pouch cells 11 and the multiple separator components 13 are alternately arranged along the thickness direction L3 of the pouch cells 11. The separator component 13 includes a heat insulation layer 131 and a phase change material layer 132 that are bonded together. The heat insulation layer 131 and the phase change material layer 132 are respectively bonded to two adjacent pouch cells 11, and each pouch cell 11 is bonded to at least one phase change material layer 132. When one of the pouch cells 11 experiences thermal runaway, the heat insulation layer 131 slows down the heat transfer to the adjacent pouch cells 11, and the phase change material layer 132 can quickly absorb heat through its own phase change, thereby achieving rapid cooling of the pouch cell 11 that has experienced thermal runaway. Thus, by providing a separator assembly 13 including a heat insulation layer 131 and a phase change material layer 132, the impact of a thermally runaway pouch cell 11 on adjacent pouch cells 11 can be reduced, and the spacing between pouch cells 11 can be reduced, thereby improving the energy density of the battery.

[0040] Furthermore, the phase change material layer 132 may include a bag and a phase change material. The phase change material is filled in the bag. When one of the pouch cells 11 experiences thermal runaway, the phase change material in the phase change material layer 132, which is attached to the pouch cell 11, undergoes a phase change within the bag, thereby rapidly absorbing heat. Optionally, the phase change material may be paraffin wax, graphene, etc.

[0041] Optionally, the heat insulation layer 131 can be an aerogel layer, and the heat insulation layer 131 and the phase change material layer 132 can be fixed by means of bonding or other methods.

[0042] In the embodiments of this application, the pouch cell 11 includes an encapsulation film, an electrode assembly, and two tabs 114. The encapsulation film includes a connected encapsulation body 111, a top sealing edge 112, and two side sealing edges 113. The encapsulation body 111 covers the electrode assembly. The two side sealing edges 113 are located on both sides of the encapsulation body 111 in the width direction L2 of the pouch cell 11, and the top sealing edge 112 is located on one side of the encapsulation body 111 in the length direction L1 of the pouch cell 11. The tabs 114 are connected to the electrode assembly. Part of the tab 114 is located inside the top sealing edge 112, and the other part extends out from the top sealing edge 112. The tabs 114 are used to connect to the acquisition board 54 described below.

[0043] In embodiments of this application, the battery module 1 further includes a plurality of mounting frames 12, each mounting frame 12 having at least one pouch cell 11 mounted on it, and the plurality of mounting frames 12 being stacked along the thickness direction L3. Optionally, each mounting frame 12 may be used to mount one, two, or more pouch cells 11.

[0044] Preferably, the mounting frame 12 can be used to mount two pouch cells 11. The mounting frame 12 includes a first plate 121, a second plate 122, and two third plates 123. The two third plates 123 are spaced apart along the width direction L2. The two ends of the first plate 121 are connected to the two third plates 123 respectively, and the two ends of the second plate 122 are connected to the two third plates 123 respectively. The dimension of the first plate 121 in the thickness direction L3 is smaller than the dimension of the second plate 122 in the thickness direction L3, and the dimension of the first plate 121 in the thickness direction L3 is smaller than the dimension of the third plate 123 in the thickness direction L3. The two top sealing edges 112 of the two pouch cells 11 are located on both sides of the first plate 121 in the thickness direction L3, and the top sealing edges 112 can abut against the first plate 121. The tabs 114 extend relative to the first plate 121 to facilitate connection of the tabs 114 to the acquisition board 54 described below.

[0045] like Figure 7 As shown, for two adjacent mounting frames 12 among a plurality of mounting frames 12, one mounting frame 12 is provided with a first fastening member 14, and the other mounting frame 12 is provided with a second fastening member 15. At least a portion of the second fastening member 15 protrudes relative to the mounting frame 12, and the second fastening member 15 has a fastening opening 151, into which the first fastening member 14 is inserted. In this way, the connection between the two mounting frames 12 can be realized through the cooperation of the first fastening member 14 and the second fastening member 15.

[0046] Furthermore, for two adjacent mounting frames 12 among the multiple mounting frames 12, the mounting frame 12 with the first fastening member 14 is also provided with a corresponding abutment member. The abutment member includes two abutment blocks 16 arranged at intervals, and a second fastening member 15 is located between the two abutment blocks 16. The second fastening member 15 abuts against the two abutment blocks 16 respectively. The two abutment blocks 16 can limit the second fastening member 15, thereby further improving the stability of the connection between the two mounting frames 12.

[0047] Preferably, such as Figure 7As shown, each mounting frame 12 is provided with a first fastening member 14 and a second fastening member 15, which facilitates the connection of multiple mounting frames 12. The number of first fastening members 14 and second fastening members 15 on each mounting frame 12 can be selected according to requirements. For example, there are four first fastening members 14 and four second fastening members 15. Two first fastening members 14 and two second fastening members 15 are fixed on one of the third plates 123, and the other two first fastening members 14 and two second fastening members 15 are fixed on another third plate 123. The first fastening members 14 are located near the lower end of the third plate 123, and the second fastening members 15 are located near the upper end of the third plate 123.

[0048] According to another aspect of this application, a battery is provided, such as... Figure 1 , Figure 2 and Figure 3 As shown, the battery includes the aforementioned battery module 1, housing 2, sealing element 3, and potting compound. The sealing element 3 is sleeved on the outside of the battery module 1. Both the battery module 1 and the sealing element 3 are disposed inside the housing 2. The sealing element 3 contacts the inner sidewall of the housing 2 to divide the internal space of the housing 2 into a first space and a second space. The first space is located on one side of the second space along the length direction L1. The encapsulation body 111 of the encapsulation film of any pouch cell 11 is located in the first space, and at least a portion of the top sealing edge 112 is located in the second space. The first space is filled by the potting compound. Because the first space is filled by the potting compound, the potting compound can bind the encapsulation body 111 and the side sealing edge 113 of the pouch cell 11. When the pouch cell 11 experiences thermal runaway, the potting compound binds the encapsulation body 111 and the side sealing edge 113 of the pouch cell 11, and the pouch cell 11 explodes and releases pressure at the location of the top sealing edge 112 located in the second space. Thus, by setting up the potting component, the direction of the thermal runaway of the pouch cell 11 can be limited, thereby reducing the impact on other pouch cells 11.

[0049] Preferably, the seal 3 contacts the outer wall of the third plate 123, and the seal 3 is at a certain distance from the end of the third plate 123 near the tab 114, so as to ensure that the part of the tab 114 and the part of the top sealing edge 112 are located in the second space.

[0050] Optionally, the potting compound can be a structure formed by potting adhesive into the first space and solidifying the adhesive. Since the potting compound is a solid structure, the heat generated by the pouch battery can be directed to the casing 2 for heat dissipation more quickly through the potting compound.

[0051] like Figure 1 , Figure 2 and Figure 3As shown, the housing 2 has an installation port 221 that communicates with the second space. The battery also includes an explosion-proof valve 51, which is located on the installation port 221. When the soft-pack cell 11 experiences thermal runaway, the soft-pack cell 11 explodes and releases pressure at the top sealing edge 112. The ejected gas enters the second space and can reach the top of the housing 2. Then, the explosion-proof valve 51 opens, allowing the gas to escape, thereby cooling the entire battery.

[0052] In the embodiments of this application, such as Figure 1 , Figure 2 , Figure 4 and Figure 8 As shown, the battery also includes two end plates 4, which are respectively disposed on both sides of the battery module 1 in the thickness direction L3. A separator 13 may also be provided between the end plates 4 and the soft-pack cells 11 located at the edge. At least one end plate 4 has an insertion interface 41 on one side of the soft-pack cells 11 in the length direction L1. The sealing element 3 includes a sealing body 31 and a protrusion 32. The protrusion 32 protrudes from the sealing body 31. The sealing body 31 is sleeved on the outside of the battery module 1, and the protrusion 32 is inserted into the insertion interface 41, thereby fixing the sealing element 3.

[0053] Furthermore, the dimension of the end plate 4 in the length direction L1 is smaller than the dimension of the soft-pack battery cell 11 in the length direction L1. When the protrusion 32 is inserted into the insertion interface 41 of the end plate 4, the part of the mounting frame 12 protrudes relative to the sealing body 31, and the part of the top sealing edge 112 and the electrode tab 114 also protrude relative to the sealing member 3, so as to ensure that the part of the top sealing edge 112 and the electrode tab 114 are located in the second space.

[0054] Preferably, each of the two end plates 4 has a plug-in interface 41, and each end plate 4 has multiple plug-in interfaces 41. The sealing body 31 has a protrusion 32 at the position corresponding to the two end plates 4. The protrusion 32 is inserted into the corresponding plug-in interface 41, thereby ensuring the stability of the installation of the sealing element 3.

[0055] Optionally, end plate 4 can be made of aluminum.

[0056] like Figure 1 , Figure 2 and Figure 3 As shown, the battery also includes a fastener 52, which is sleeved on the outside of the battery module 1 and the two end plates 4, thereby further improving the stability of the cell assembly.

[0057] Optionally, there are two fasteners 52, which are spaced apart. The fasteners 52 can abut against the side of the abutment block 16 opposite to the first fastening member 14. The fasteners 52 can be steel rings.

[0058] In the embodiments of this application, the battery further includes a data acquisition board 54 and a BMS 53 (Battery Management System). The data acquisition board 54 is disposed on one side of the battery module 1 in the length direction L1, and the BMS 53 is disposed on the side of an end plate 4 facing away from the battery module 1 in the thickness direction L3. Multiple pouch cells 11 are electrically connected to the data acquisition board 54, and the data acquisition board 54 is electrically connected to the BMS 53. Since the tabs 114 of the pouch cells 11 protrude relative to the mounting frame 12, this facilitates the connection between the tabs 114 and the data acquisition board 54.

[0059] Furthermore, the battery also includes an insulating pad 55, which is disposed inside the housing 2. The side of the acquisition board 54 facing away from the battery module 1 is attached to the insulating pad 55, thereby achieving insulation between the acquisition board 54 and the housing 2.

[0060] Optionally, the insulating pad 55 may be made of PC material (Polycarbonate).

[0061] Furthermore, the casing 2 includes a barrel 21 and a cover 22. The cover 22 is rectangular, and the barrel 21 has an opening, on which the cover 22 is placed. The battery also includes a waterproof bracket 56, which is located above the BMS 53 and inside the barrel 21. The waterproof bracket 56 and the inner wall of the barrel 21 form a sealing groove, which is filled with sealant. A portion of the cover 22 extends into the sealing groove so that the cover 22 covers the opening. Thus, filling the sealing groove with sealant improves the stability of the seal between the barrel 21 and the cover 22.

[0062] Optionally, the cover 22 is provided with the aforementioned mounting port 221 so that the explosion-proof valve 51 can be installed on the mounting port 221 of the cover 22.

[0063] In addition, a handle, a discharge port, and a charging port can be installed on the cover 22. The discharge port and the charging port can be connected to the BMS 53 via a wiring harness.

[0064] In assembling the battery of this application, firstly, a soft-pack battery cell 11 is installed on the mounting frame 12, and separator components 13 are installed on both sides of the soft-pack battery cell 11. Then, another soft-pack battery cell 11 is installed on the mounting frame 12, thus achieving the assembly of two soft-pack battery cells 11 on one mounting frame 12. Then, multiple mounting frames 12 are stacked, and adjacent mounting frames 12 are connected by a first fastener 14 and a second fastener 15. Next, two end plates 4 are installed on both sides of the battery module 1. The battery module 1 and the entire assembly of the two end plates 4 are pre-tightened using a pressing fixture, and then fixed using two fasteners 52. Then, a sealing member 3 is installed, so that the protrusion 32 in the sealing member 3 enters the insertion interface 41 of the end plate 4. Then, a collection plate 54 is installed, and the connection between the tab 114 and the battery cell is achieved by laser welding, and an insulating pad 55 is installed. The assembled structure is then installed into the barrel 21. The seal 3 is pressed against the inner wall of the barrel 21, dividing the interior of the barrel 21 into a first space and a second space. Adhesive is poured into the first space, reaching the top end plate 4. After the adhesive solidifies, a potted component is formed. A BMS 53 is then installed on the top end plate 4 and connected to the acquisition plate 54. A waterproof bracket 56 is installed on the BMS 53, forming a sealing groove with the inner wall of the barrel 21. The sealing groove is filled with sealant. A handle, a discharge port, and a charging port are mounted on the housing 2, and the discharge port and charging port are connected to the BMS 53 via wiring harnesses. Finally, part of the cover 22 is inserted into the sealing groove, thus achieving a seal between the waterproof bracket 56, the barrel 21, and the cover 22.

[0065] 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 module, characterized in that, The battery module includes multiple pouch cells and multiple separator components. The multiple pouch cells and multiple separator components are alternately arranged along the thickness direction of the pouch cells. The separator component includes a heat insulation layer and a phase change material layer that are bonded together. The heat insulation layer and the phase change material layer are respectively bonded to two adjacent pouch cells. Each pouch cell is bonded to at least one phase change material layer.

2. The battery module according to claim 1, characterized in that, The battery module also includes multiple mounting frames, each mounting frame having at least one of the soft-pack cells mounted on it, and the multiple mounting frames are stacked along the thickness direction. For two adjacent mounting frames among the plurality of mounting frames, one mounting frame is provided with a first fastening member and the other mounting frame is provided with a second fastening member. At least a portion of the second fastening member protrudes relative to the mounting frame, and the second fastening member has a fastening opening, into which the first fastening member is inserted.

3. The battery module according to claim 2, characterized in that, For two adjacent mounting frames among the plurality of mounting frames, the mounting frame with the first fastening member is also provided with a corresponding abutment member. The abutment member includes two abutment blocks arranged at intervals. The second fastening member is located between the two abutment blocks and abuts against the two abutment blocks respectively.

4. A battery, characterized in that, The battery includes a housing and a battery module as described in any one of claims 1-3, the battery module being disposed inside the housing, the housing including a barrel and a cover, the barrel having an opening; The battery also includes a waterproof bracket, which is disposed inside the barrel. The waterproof bracket and the inner wall of the barrel form a sealing groove, which is filled with sealant. A portion of the cover extends into the sealing groove so that the cover covers the opening.

5. The battery according to claim 4, characterized in that, The soft-pack battery cell includes an encapsulation film, an electrode assembly, and a tab. The encapsulation film includes a connected encapsulation body and a top sealing edge. The electrode assembly is connected to the tab and is covered by the encapsulation body. Part of the tab is located inside the top sealing edge, and another part of the tab extends out from the top sealing edge. The battery also includes a sealant and a potting compound. The sealant is sleeved on the outside of the battery module. Both the battery module and the sealant are disposed inside the housing. The sealant contacts the inner sidewall of the housing to divide the internal space of the housing into a first space and a second space. The encapsulation body of the encapsulation film of any of the pouch cells is located in the first space, and at least a portion of the top sealing edge is located in the second space. The first space is filled by the potting compound.

6. The battery according to claim 5, characterized in that, The battery also includes an explosion-proof valve. The housing has an installation port that communicates with the second space, and the explosion-proof valve is disposed on the installation port.

7. The battery according to claim 5, characterized in that, The battery also includes two end plates, which are respectively disposed on both sides of the battery module in the thickness direction, and at least one end plate has an insertion interface on one side of the soft-pack cell in the length direction. The sealing element includes a sealing body and a protrusion. The protrusion protrudes from the sealing body, the sealing body is sleeved on the outside of the battery module, and the protrusion is inserted into the connector.

8. The battery according to claim 7, characterized in that, The battery also includes a data acquisition board and a battery management system (BMS). The data acquisition board is disposed on one side of the battery module in the length direction, and the BMS is disposed on the side of an end plate facing away from the battery module in the thickness direction. Multiple pouch cells are electrically connected to the data acquisition board, and the data acquisition board is electrically connected to the BMS.

9. The battery according to claim 8, characterized in that, The battery also includes an insulating pad, which is disposed inside the housing, and the side of the acquisition board facing away from the battery module is attached to the insulating pad.

10. The battery according to claim 7, characterized in that, The battery also includes fasteners that are fitted over the outside of the battery module and the two end plates that make up the whole.

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