Battery module

Abstract

Provided is a battery module that can be easily manufactured and that can further reduce the contact of a discharge object discharged from an abnormal battery in which an abnormality occurs with a normal battery adjacent to the abnormal battery. This battery module (BM) is provided with: a plurality of batteries (BT) that are arranged side by side in a first direction and that are provided with explosion-proof valves (EV) on the upper surfaces thereof; a first heat-insulating plate (HI1) disposed above the plurality of batteries (BT); and a second heat-insulating plate (HI2) disposed between the plurality of batteries, the first heat-insulating plate (HI1) being provided with: a plurality of openings (OP) provided at positions facing the explosion-proof valve (EV), respectively, and arranged in the first direction; and a slit (SL) provided between the openings (OP), the second heat-insulating plate (HI2) being provided with: a main body section (BP) facing the battery (BT); and a protruding portion (PP) protruding from the main body portion (BP) toward the first insulation panel (HI1), the protruding portion (PP) being inserted into the slit (SL), and the protruding portion (PP) covering the opening (OP).

Description

Technical Field

[0001] This disclosure relates to battery modules. Background Technology

[0002] Patent Document 1 discloses a battery module comprising a battery (2) and a heat insulation plate (4). The heat insulation plate (4) is disposed on the side of the electrical connection assembly (3) near the upper housing (12). Multiple pressure relief holes (41) are provided on the heat insulation plate (4), and each pressure relief hole (41) is correspondingly disposed to an explosion-proof valve (21) of the battery (2) (refer to Patent Document 1). Figure 2 and

[0047] paragraph).

[0003] Furthermore, Patent Document 1 (refer to claim 4) discloses that: a mounting hole (42) is provided on the heat insulation plate (4), and a positioning pin (311) is provided on the electrical connection assembly (3), and the positioning pin (311) is fixed in the mounting hole (42) by heat riveting after being fitted into the mounting hole (42).

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Chinese Utility Model No. 218299959 Specification Summary of the Invention

[0007] The technical problem that the invention aims to solve

[0008] In the battery module described in Patent Document 1, since the heat insulation plate (4) is fixed using mounting holes (42) and positioning pins (311), there is a technical problem that it is difficult to align all the positioning pins (311) with the mounting holes (42). In addition, since the positioning pins (311) are fixed to the mounting holes (42) by using hot riveting, the number of processes increases and the manufacturing cost is high.

[0009] Furthermore, due to thermal runaway of the battery (2), the ejected material from the battery (2) may pass through the pressure relief hole (41) and the adjacent pressure relief hole (41), causing the gas and ejected material to flow into the normal battery (2). As a result, it may have an adverse effect on the normal battery (2).

[0010] This disclosure is made from the perspective that the main objective of this disclosure is to provide a battery module that can be easily manufactured and further reduces the contact between ejected material from the malfunctioning battery and the normal battery adjacent to the malfunctioning battery.

[0011] Technical solutions for solving technical problems

[0012] The battery module disclosed herein has the following features: Multiple batteries are arranged in a first direction, and each battery has an explosion-proof valve on its upper surface; A first heat insulation plate is disposed above the plurality of said batteries; and A second heat insulation plate is disposed between the plurality of said batteries. The first heat insulation plate includes: a plurality of openings, each disposed opposite to the explosion-proof valve and arranged in the first direction; and slits disposed between the openings. The second heat insulation plate includes: a main body portion opposite to the battery; and a protrusion portion protruding from the main body portion toward the first heat insulation plate. The protrusion is inserted into the slit and covers the opening.

[0013] Invention Effects

[0014] According to this disclosure, it is easy to manufacture and can further reduce the contact between the ejected material from the abnormal battery that generates the abnormality and the normal battery adjacent to the abnormal battery. Attached Figure Description

[0015] Figure 1 This is a perspective view of a battery module according to one embodiment.

[0016] Figure 2 This is an exploded perspective view of a battery module according to one embodiment.

[0017] Figure 3 This is a top view of the first insulation panel.

[0018] Figure 4 This is the front view of the second insulation panel.

[0019] Figure 5 This is the front view of the battery.

[0020] Figure 6 This is a schematic diagram showing the installation status of the first and second heat insulation panels (alongside). Figure 2 (A schematic diagram corresponding to the cross-sectional view after cutting along line VI-VI).

[0021] Figure 7 yes Figure 6 An enlarged diagram of the dashed area.

[0022] Figure 8 It is shown in Figure 7 A schematic diagram of the bent protrusion of the lieutenant general.

[0023] Figure 9 This is a schematic diagram illustrating an abnormal state that occurs in a battery located in a battery module. Detailed Implementation

[0024] The following describes a battery module according to an embodiment of the present disclosure in more detail. Although the description is made with reference to the accompanying drawings as needed, the various elements in the drawings are shown schematically and illustratively only for the purpose of understanding the present disclosure, and the appearance, size ratio, etc. may differ from the actual object.

[0025] The term "top-down view" as used in this specification refers to the view of an object (e.g., a battery module) from directly above its thickness (height), synonymous with a top-down view. As an example, a top-down view is... Figure 1 The image shows the state when viewed along the positive direction in the "Z direction". Unless otherwise specified, "side view" in this specification refers to the state when the object (e.g., a battery module) is placed and viewed from the side perpendicular to its thickness (height) direction, synonymous with a side view. As an example, a side view is... Figure 1 The image shows the state when viewed along the positive (or negative) direction in the "Y direction". Unless otherwise specified, "front view" in this specification refers to the state when the object (e.g., a battery module) is placed and viewed from the front perpendicular to its thickness (height) direction, synonymous with the front view. As an example, the front view is... Figure 1 The image shows the state when viewed along the positive direction in the "X direction". It should be noted that the "positive direction" refers to the direction of the arrows in the X, Y, and Z directions shown in the attached diagram, while the "negative direction" refers to the direction opposite to the direction of the arrows in the X, Y, and Z directions shown in the attached diagram. Furthermore, the X, Y, and Z directions are orthogonal to each other.

[0026] [Battery Module Composition]

[0027] Reference Figures 1-9 The structure of the battery module BM disclosed herein will be described. The battery module BM includes a battery BT, a first heat insulation plate HI1, and a second heat insulation plate HI2 (see reference). Figures 1-2 Additionally, the battery module BM can have a splicing assembly TA (see reference). Figure 2 ) and the shell CS that houses these components (see reference) Figures 1-2 ).

[0028] -Battery-

[0029] Battery BT primarily refers to a chemical battery that converts chemical energy into direct current electricity through a chemical reaction. In this embodiment, the battery BT used in the battery module BM is positioned along a first direction (…). Figure 2 The configuration (in the Y direction) is housed within the housing CS. It should be noted that... Figure 2 The example shows a scheme in which nine battery BTs are arranged along a first direction. For example... Figure 2 and Figure 5The illustrated shape of the battery BT is intended to refer to a cuboid-shaped battery. By using a cuboid-shaped battery BT, multiple battery BTs can be housed side-by-side within the housing CS. It should be noted that the shape of the battery BT can be any shape other than a cuboid, as long as multiple battery BTs can be housed side-by-side within the housing CS. For example, it can be a polygonal column, a cylinder, or an elliptical cylinder.

[0030] A pair of terminals ET (positive or negative) for outputting power can be provided on the outer surface of the battery BT (see reference). Figure 2 and Figure 5 The electricity generated through a chemical reaction is extracted from this terminal ET. Figure 2 and Figure 5 In the example, a pair of terminals ET are disposed on the upper surface of the battery BT.

[0031] Furthermore, an explosion-proof valve EV can be installed in the battery BT. This valve EV discharges any ejected material (internal gas and / or solid matter from inside the battery) caused by internal anomalies to the outside of the battery BT. The explosion-proof valve EV functions as a gas discharge valve (or safety valve) that actuates when the pressure inside the battery BT rises. Figure 2 and Figure 5 In the example, the explosion-proof valve EV can be positioned on the terminal face (upper surface) where a pair of terminals ET are located. More specifically, the explosion-proof valve EV can be configured to be sandwiched between the pair of terminals ET. In such a position, the explosion-proof valve EV can be activated regardless of which of the two terminals ET causes an abnormality in the battery BT.

[0032] -First Insulation Board-

[0033] The first heat insulation plate HI1 is disposed above multiple battery BTs. When viewed from above, the first heat insulation plate HI1 has a shape that corresponds to and can be accommodated within the housing CS. Figure 2 and Figure 3 In the example, it can be rectangular in shape when viewed from above. Furthermore, the first heat insulation plate HI1 refers to properties that make it difficult to conduct heat; specifically, it can be made of a material with a thermal conductivity of 0.1 W / (m·K) or less. If it is a material with this thermal conductivity, even if heat is generated due to internal anomalies in the battery BT, the heat will not easily be conducted to the outside.

[0034] The first heat insulation plate HI1 includes: multiple openings OP, which, when viewed from above, are respectively positioned opposite the explosion-proof valve EV of the battery BT and arranged in a first direction; and slits SL, which are disposed between the openings OP (see reference). Figure 2 and Figure 3 ).

[0035] exist Figure 2 and Figure 3 In the example, the opening OP can be set to nine corresponding to the nine battery BTs configured along the first direction (Y direction).

[0036] The shape of the open OP can be as follows Figure 2 and Figure 3 The example is a shape corresponding to the shape of the explosion-proof valve EV. More specifically, when viewed from above, the size of the opening OP can be larger than the size of the explosion-proof valve EV. In other words, when viewed from above, the area of ​​the opening OP can have an area that can completely surround the explosion-proof valve EV. With such a configuration, in the event of an internal anomaly in the battery BT causing ejected material from the explosion-proof valve EV, it is possible to reduce the likelihood of the ejected material being bounced back by the first heat insulation plate HI1 and re-attaching to the abnormal battery.

[0037] exist Figure 2 and Figure 3 In the example, at least eight slits SL can be arranged between each other at the openings OP. Furthermore, the slits SL can also be arranged further outward than the outermost opening OP. Figure 2 and Figure 3 In the example, a slit SL can be provided on the +Y direction side relative to the opening OP furthest from the +Y direction side. As a result, there can be nine slits SL corresponding to the number of openings OP. For example... Figure 2 and Figure 3 As shown, eight of the nine slits SL are arranged between one opening OP and another opening OP adjacent to it. Additionally, one of the nine slits SL is positioned on the +Y direction side relative to the opening OP closest to the +Y direction side.

[0038] The protrusion PP of the second heat insulation plate HI2, which will be described below, is inserted into the slit SL. Therefore, compared with the point contact scheme in the prior art battery module where the positioning pin is engaged with the mounting hole, the alignment difficulty between the battery BT and the first heat insulation plate HI1 can be reduced.

[0039] -Second heat insulation board-

[0040] The second heat insulation plate HI2 is configured between at least a plurality of battery BTs. Figure 2 In this example, eight batteries BT can be arranged between each other. Furthermore, the second heat insulation plate HI2 can also be positioned further outward than the outermost battery BT. Figure 2In the example, a second heat insulation plate HI2 can be provided on the +Y direction side relative to the battery BT closest to it. As a result, nine second heat insulation plates HI2 can be provided, corresponding to the number of batteries BT. For example... Figure 2 and Figure 6 As shown, eight of the nine second heat insulation plates HI2 are disposed between one battery BT and another battery BT adjacent to it. Additionally, one of the nine second heat insulation plates HI2 is disposed on the +Y direction side relative to the battery BT closest to the +Y direction side.

[0041] The second heat insulation plate HI2 refers to a material with poor heat conduction properties. Specifically, it can be made of a material with a thermal conductivity of 0.1 W / (m·K) or less. If the material has this thermal conductivity, even if heat is generated due to an internal abnormality of the battery BT, the heat can be prevented from being conducted to the battery adjacent to the battery with the internal abnormality by means of the second heat insulation plate HI2 disposed between the battery BTs.

[0042] As an example of a material with low thermal conductivity, the second heat insulation panel HI2 may contain a fibrous material. Specifically, the fibrous material may be glass wool. If this material is used, it can ideally insulate the battery. As a specific example of the second heat insulation panel HI2 containing a fibrous material, a structure having a fibrous material layer and two insulating and flame-retardant sheets sandwiching the fibrous material layer can be listed. Another specific example of the second heat insulation panel HI2 is a structure with an adhesive layer on one side of the fibrous material layer.

[0043] like Figure 4 As shown, the second heat insulation plate HI2 has a main body BP facing the battery BT, and a protrusion PP protruding from the main body BP toward the first heat insulation plate HI1. Specifically, the protrusion PP can be oriented relative to the main body BP toward... Figure 4 The -Z direction is prominent.

[0044] As a specific scheme for the size of the main body BP, it could be that the width dimension A1 of the main body BP (refer to...) Figure 4 ) is the width dimension B1 of battery BT (refer to Figure 5 The height dimension A2 of the main body BP is as follows (refer to...) Figure 4 ) is the height dimension B2 of battery BT (refer to Figure 5The above refers to the following: The "width dimension of the main body BP" and "height dimension of the main body BP" mentioned in this specification refer to the maximum dimensions in the X and Z directions of the main body BP, excluding the protruding part PP. Similarly, the "width dimension of the battery BT" and "height dimension of the battery BT" mentioned in this specification refer to the maximum dimensions in the X and Z directions of the battery BT. With this dimensional relationship, the second heat insulation plate HI2 can appropriately cover the adjacent surfaces of the batteries BT, making it difficult for heat to be conducted to batteries adjacent to internally abnormal batteries.

[0045] The protrusion PP is inserted into the slit SL of the first heat insulation plate HI1 (see reference). Figure 6 and Figure 7 ), and covers the opening OP of the first insulation panel HI1 (refer to Figure 8 Thus, because the protrusion PP covers the opening OP, it is possible to further reduce the contact between the ejected material from the malfunctioning battery and the adjacent normal battery. For details on this effect, please refer to [reference needed]. Figure 9 Please provide a detailed explanation.

[0046] like Figure 9 As shown, for a battery BT1, if an internal anomaly occurs and ejects material from the explosion-proof valve EV1, depending on the situation, it is possible that the protrusion PP1 covering the opening OP1 will be breached, causing the ejected material to spray above the first heat insulation plate HI1. However, for a normal battery BT2 adjacent to the battery BT1 that has experienced the internal anomaly, the protrusion PP2 covers the opening OP2 and the explosion-proof valve EV2, thus preventing the ejected material from adhering to the normal battery BT2.

[0047] As an ideal covering scheme for the opening OP, the protrusion PP of the insertion slit SL can be bent toward the opening OP (see reference). Figure 8 If this solution is adopted, it is not necessary to use thermal riveting to position the heat insulation plate and electrical connection components as in existing technologies. The first heat insulation plate HI1 and the battery BT can be positioned using a simple method. Furthermore, by appropriately covering the periphery of the explosion-proof valve EV with the protrusion PP, it is possible to further reduce the contact between the ejected material from the malfunctioning battery and the normal battery adjacent to the malfunctioning battery.

[0048] As a specific design for the size of the protruding part PP, the protruding dimension A3 of the protruding part PP (refer to...) Figure 4 It can be compared to the size L1 of the slit (refer to...) Figure 3 (Short). The "protrusion dimension of the protrusion PP" mentioned in this specification refers to the dimension A3 along the -Z direction from the boundary between the protrusion PP and the main body BP to the point where the protrusion PP is most prominent. Such a protrusion dimension reduces interference with adjacent curved protrusions PP.

[0049] Additionally, the width dimension of the protrusion PP is A4 (refer to...). Figure 4 The distance between the terminals of the battery BT can be B3 (refer to...). Figure 5 (Short). The "width dimension of the protrusion PP" mentioned in this specification refers to the maximum dimension in the X direction of the protrusion PP protruding from the main body BP. Such a width dimension reduces interference between the battery BT terminal ET and the protrusion PP.

[0050] -Connector assembly (additional component)-

[0051] TA splice assembly (reference) Figure 2 It may include a base component BB, a contact TB and an external output terminal OT disposed on the base component BB, a contact side opening TO disposed in a manner corresponding to the explosion-proof valve EV of the battery BT, and a contact side slit TS disposed in a manner corresponding to the slit SL of the first heat insulation plate HI1.

[0052] The base component BB, when viewed from above, can be shaped to correspond with and be accommodated within the housing CS. Figure 2 In the example, it can be rectangular in shape when viewed from above. The base component BB can use an insulating material to achieve electrical insulation from the contact TB.

[0053] For batteries BT arranged in the first direction (Y direction), the connector TB can connect the batteries in series by electrically connecting the terminal ET (positive terminal) of one battery BT to the terminal (negative terminal) of another battery BT. It should be noted that the batteries in the first direction (Y direction) can also be connected in parallel by electrically connecting the terminal ET (positive terminal) of one battery BT to the terminal (positive terminal) of another battery BT. It should also be noted that any configuration capable of electrically connecting the terminals of the battery BTs can be any configuration other than the connector TB. Specifically, connectors or wire harnesses can replace the connector TB.

[0054] The external output terminal OT can output power from the battery BT, which is electrically connected via the connector TB, to the outside. Additionally, as described above, in order to expose the external output terminal OT from the housing CS, the external output terminal OT can be configured to extend from the outer edge of the base component BB.

[0055] like Figure 2 As illustrated, the tab-side opening TO can be configured to correspond to the nine batteries BT arranged along the first direction (Y direction) and the nine openings OP provided on the first heat insulation plate HI1. Thus, when an internal anomaly occurs in a battery BT and ejection occurs from the explosion-proof valve EV, the ejection can pass through the tab-side opening TO.

[0056] The shape of the TO opening on the splice side can be as follows: Figure 2 The example is a shape corresponding to the shape of the explosion-proof valve EV. More specifically, when viewed from above, the size of the tab-side opening TO can be larger than the size of the explosion-proof valve EV. In other words, when viewed from above, the tab-side opening TO can have an area that can completely surround the explosion-proof valve EV. With such a configuration, in the event of an internal anomaly in the battery BT causing ejected material from the explosion-proof valve EV, it is possible to reduce the likelihood of the ejected material being bounced back by the tab assembly TA and re-attaching to the abnormal battery.

[0057] like Figure 2 As illustrated, the splice-side slit TS can be provided corresponding to the nine slits SL provided on the first heat insulation plate HI1. Thus, the protrusion PP of the second heat insulation plate HI2 can be inserted into the splice-side slit TS. With this configuration, the protrusion PP, by inserting into the splice-side slit TS of the splice assembly TA and the slits SL of the first heat insulation plate HI1, can facilitate the positioning of the splice assembly TA and the first heat insulation plate HI1.

[0058] -Shell (Additional Structure)-

[0059] The housing CS can be composed of a first housing CS1 and a second housing CS2 (see reference). Figure 2 Therefore, the first housing CS1 and the second housing CS2 can form a space to accommodate the first heat insulation plate HI1, the bonding assembly TA, the battery BT, and the second heat insulation plate HI2. It should be noted that... Figure 2 The example illustrates a scheme in which the accommodating space is composed of two shells (first shell CS1 and second shell CS2), but it is not limited to this scheme and can also be composed of three or more shells.

[0060] The casing CS can be made of any material, including resin (e.g., plastic) or metal. Examples of resin materials include polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), polybutylene terephthalate (PBT), modified polyphenylene ether (m-PPE), and polyamide (PA). Examples of metal materials include aluminum. It should be noted that, from the perspective of more ideally accommodating the battery BT, etc., which will be described below, the casing CS can be made of a material with high rigidity.

[0061] like Figure 1 and Figure 2 As illustrated, the housing CS can be rectangular in shape when viewed from above. The rectangular shape can be such that the side along the first direction (Y direction) in which the batteries BT housed in the housing CS are arranged side by side corresponds to the long side, and the side along the second direction (X direction) orthogonal to the first direction corresponds to the short side.

[0062] Furthermore, such as Figure 1 and Figure 2 As illustrated, a cutout CA can be provided in the housing CS to expose the external output terminal OT of the connector assembly TA from the housing CS. Figure 1 and Figure 2 In the example, the cut CA can be located on the side of the first housing CS1 in the ±Y direction (the first direction in which the batteries BT are arranged side by side). It should be noted that the cut CA is not limited to being located in the first housing CS1, but can also be located in the second housing CS2. In addition, the cut CA can also be located on the surface of the housing in the ±X direction.

[0063] In summary, the battery module BM of this disclosure includes: a plurality of batteries BT arranged in a first direction, each battery BT having an explosion-proof valve EV on its upper surface; a first heat insulation plate HI1 disposed above the plurality of batteries BT; and a second heat insulation plate HI2 disposed between the plurality of batteries BT. Furthermore, the first heat insulation plate HI1 includes: a plurality of openings OP, each disposed opposite to the explosion-proof valve EV and arranged in the first direction; and a slit SL disposed between the openings OP. The second heat insulation plate HI2 includes: a main body BP opposite to the batteries BT; and a protrusion PP protruding from the main body BP toward the first heat insulation plate HI1. The protrusion PP is inserted into the slit SL and covers the openings OP. Therefore, according to the battery module BM of this disclosure, by inserting the protrusion PP into the slit SL, the alignment difficulty between the batteries BT and the first heat insulation plate HI1 can be reduced. Furthermore, since the protrusion PP covers the openings OP, it is possible to further reduce the contact between ejected material from the malfunctioning battery and the normal battery adjacent to the malfunctioning battery.

[0064] It should be noted that the embodiments disclosed herein are merely examples in all respects and do not constitute a basis for limiting interpretation. Therefore, the technical scope of this disclosure is not interpreted solely based on the above embodiments, but rather defined based on the description in the claims. Furthermore, the technical scope of this disclosure includes all modifications within the meaning and scope equivalent to the claims.

[0065] The chip bonding and battery module solutions disclosed herein are as follows.

[0066] <1> A battery module, comprising: Multiple batteries are arranged in a first direction, and each battery has an explosion-proof valve on its upper surface; A first heat insulation plate is disposed above the plurality of said batteries; and A second heat insulation plate is disposed between the plurality of said batteries. The first heat insulation plate includes: a plurality of openings, each disposed opposite to the explosion-proof valve and arranged in the first direction; and slits disposed between the openings. The second heat insulation plate includes: a main body portion opposite to the battery; and a protrusion portion protruding from the main body portion toward the first heat insulation plate. The protrusion is inserted into the slit and covers the opening.

[0067] <2> according to <1> The battery module wherein the protrusion inserted into the slit bends toward the opening.

[0068] <3> according to <1> or <2> In the battery module, the protrusion dimension of the protrusion is shorter than the dimension of the slit.

[0069] <4> according to <1> to <3> The battery module according to any one of the following embodiments, wherein the width dimension of the protrusion is shorter than the distance between the terminals of the battery.

[0070] <5> according to <1> to <4> The battery module according to any one of the following methods, wherein the second heat insulation plate is a fibrous material.

[0071] <6> according to <1> to <5> In any one of the battery modules, the width of the main body is greater than or equal to the width of the battery, and the height of the main body is greater than or equal to the height of the battery.

[0072] <7> according to <1> to <6> The battery module according to any one of the following methods, wherein, when viewed from above, the size of the opening is greater than or equal to the size of the explosion-proof valve.

[0073] Industrial applicability

[0074] This disclosure can be ideally used as a battery module that can be easily manufactured and further reduces the contact between ejected material from the malfunctioning battery and the normal battery adjacent to the malfunctioning battery.

[0075] Explanation of reference numerals in the attached figures

[0076] BM battery module

[0077] BT battery

[0078] ET terminal

[0079] EV explosion-proof valve

[0080] HI1 First Insulation Board

[0081] OP opening

[0082] SL slit

[0083] TA splice assembly

[0084] BB base components

[0085] TB splicing

[0086] OT external output terminal

[0087] TO splice side opening

[0088] TS splice side slit

[0089] HI2 Second Insulation Board

[0090] PP protrusion

[0091] BP main body

[0092] CS housing

[0093] CS1 First Housing

[0094] CS2 Second Housing

[0095] CA incision.

Claims

1. A battery module, comprising: Multiple batteries are arranged in a first direction, and each battery has an explosion-proof valve on its upper surface; A first heat insulation plate is disposed above the plurality of said batteries; as well as A second heat insulation plate is disposed between the plurality of said batteries. The first heat insulation panel has: Multiple openings are respectively located opposite the explosion-proof valve and arranged in the first direction; and Slits are provided between the openings. The second heat insulation panel has: The main body is positioned opposite the battery. as well as The protrusion extends from the main body toward the first heat insulation plate. The protrusion is inserted into the slit and covers the opening.

2. The battery module according to claim 1, wherein, The protrusion inserted into the slit bends toward the opening.

3. The battery module according to claim 1 or 2, wherein, The protrusion of the protrusion is shorter than the size of the slit.

4. The battery module according to any one of claims 1 to 3, wherein, The width of the protrusion is shorter than the distance between the terminals of the battery.

5. The battery module according to any one of claims 1 to 4, wherein, The second insulation board contains fibrous materials.

6. The battery module according to any one of claims 1 to 5, wherein, The width of the main body is greater than or equal to the width of the battery, and the height of the main body is greater than or equal to the height of the battery.

7. The battery module according to any one of claims 1 to 6, wherein, When viewed from above, the size of the opening is greater than or equal to the size of the explosion-proof valve.

Images