Protective structure for battery and battery thereof

Abstract

The utility model discloses a protective structure for a battery and the battery. The protective structure for the battery comprises a protective bracket and a cover plate, a first through hole and a second through hole are formed in the protective support, the first through hole is suitable for being matched with a pole of the battery, and the second through hole is suitable for being opposite to an anti-explosion valve of the battery. The cover plate is arranged on one side of the protection support in the first direction, and the cover plate shields the second through hole on the projection plane in the first direction. According to the protection structure for the battery, in the welding process, the explosion-proof valve failure caused by slag splashing can be effectively avoided, meanwhile, after welding is completed, the cover plate does not need to be dismantled, the cover plate can further protect the explosion-proof valve, tool development is reduced, cost is reduced, and meanwhile when the battery cell is in thermal runaway and the explosion-proof valve is opened, the explosion-proof valve can be effectively protected. And the cover plate can also intercept the spraying of the high-temperature electrolyte to a certain extent, so that the use safety of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a protection structure for batteries and a battery thereof. Background Art

[0002] In the related art, in order to prevent the explosion-proof valve and the collection harness from being damaged by high temperature due to slag splashing during laser welding, a tool is usually installed on the battery before laser welding to protect the explosion-proof valve and the collection harness. After the battery is welded, the tool is removed and the protective parts are reinstalled on the outside of the battery to protect the explosion-proof valve and the collection harness. However, the above-mentioned protection method for the explosion-proof valve and the collection harness increases the protection cost of the battery, and the method is cumbersome, which reduces the production efficiency of the battery. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a protective structure for a battery, which can effectively prevent the explosion-proof valve from failing due to slag splashing during welding, and at the same time, after welding is completed, there is no need to remove the cover plate, at this time the cover plate can further protect the explosion-proof valve, reducing tooling development and reducing costs.

[0004] Another object of the utility model is to provide a battery using the above protection structure for batteries.

[0005] According to the first aspect of the utility model, a protective structure for a battery includes: a protective bracket, on which a first through hole and a second through hole are formed, the first through hole is suitable for cooperating with a pole of the battery, and the second through hole is suitable for being opposite to an explosion-proof valve of the battery; and a cover plate, the cover plate is arranged on one side of the protective bracket in a first direction, and on a projection surface in the first direction, the cover plate blocks the second through hole.

[0006] According to the protection structure for the battery of the embodiment of the utility model, a protection bracket is installed on the side of the battery with a pole, a second through hole opposite to the explosion-proof valve is formed on the protection bracket, and a cover plate is provided at one end of the second through hole away from the battery, and the cover plate shields the explosion-proof valve. Thus, during the welding process, the explosion-proof valve failure caused by slag splashing can be effectively avoided. At the same time, after the welding is completed, there is no need to remove the cover plate, and the cover plate can further protect the explosion-proof valve, which reduces tooling development and reduces costs. It can also avoid interference between surrounding components and the explosion-proof valve during the use of the battery, thereby avoiding damage to the explosion-proof valve. At the same time, when the battery cell is thermally runaway and the explosion-proof valve is opened, the cover plate can also intercept the spraying of high-temperature electrolyte to a certain extent, avoiding the high-temperature electrolyte from being directly sprayed out of the battery and causing high-temperature damage to surrounding components, thereby improving the safety of battery use.

[0007] According to some embodiments of the utility model, a collection harness is provided between the protective bracket and the cover plate, and the collection harness is suitable for connecting to the pole; on the projection surface of the first direction, the cover plate shields the collection harness.

[0008] According to some embodiments of the present invention, the cover plate includes a first connecting portion and a second connecting portion connected to each other, the first connecting portion is opposite to the explosion-proof valve, and the second connecting portion is opposite to the collection harness; the thickness of the first connecting portion in the first direction is less than the thickness of the second connecting portion.

[0009] According to some embodiments of the present invention, in the first direction, a portion of the second connection portion is recessed in a direction away from the explosion-proof valve to form the first connection portion.

[0010] According to some embodiments of the present invention, the thickness of the first connecting portion in the first direction is D1, and the thickness of the second connecting portion in the first direction is D2, wherein D1 and D2 respectively satisfy: D1≤0.2mm, 0.7mm≤D2≤3.0mm.

[0011] According to some embodiments of the utility model, the protective bracket includes a bracket body, on which the first through hole and the second through hole are formed; a first protrusion, which is arranged on the bracket body, extends along the circumference of the second through hole, and abuts against the cover plate.

[0012] According to some embodiments of the utility model, the protective bracket also includes a plurality of second protrusions, the plurality of second protrusions and the first protrusion are arranged on the same side of the bracket body in the first direction, the plurality of second protrusions are spaced apart along the second direction, two adjacent second protrusions and the bracket body jointly define an installation groove, the collection harness is arranged in the installation groove, and the second direction is perpendicular to the first direction.

[0013] According to some embodiments of the utility model, each of the second protrusions is provided with at least one clip; the protective structure also includes a connecting piece, which is provided on the bracket body and is suitable for connecting with the pole, and the connecting piece and the clip cooperate to make the bracket body and the connecting piece stop, and the connecting piece blocks the pole on the projection surface of the first direction.

[0014] According to some embodiments of the present invention, the cover plate includes at least one of a muscovite mica sheet, a phlogopite mica sheet, and a thermoplastic polyimide sheet.

[0015] The battery according to the embodiment of the second aspect of the utility model includes the protective structure for the battery according to the embodiment of the first aspect of the utility model.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of a protective structure according to an embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of a protective structure according to an embodiment of the utility model, wherein a cover plate is not shown;

[0020] Figure 3 yes Figure 2 The enlarged view of the A part shown in the middle circle;

[0021] Figure 4 is a cross-sectional view of a cover plate of a protective structure according to an embodiment of the utility model;

[0022] Figure 5 yes Figure 4 The enlarged view of the part B shown in the middle circle;

[0023] Figure 6 is a schematic diagram of a protection bracket and a battery of a protection structure according to an embodiment of the utility model;

[0024] Figure 7 is a schematic diagram of a protective structure and a battery according to an embodiment of the utility model;

[0025] Figure 8 yes Figure 7 A schematic diagram of the protective structure and battery from another angle shown in FIG.

[0026] Reference numerals:

[0027] 100: protective structure;

[0028] 1: protective bracket; 11: bracket body; 111: first through hole; 112: second through hole; 12: first protrusion; 13: second protrusion; 131: mounting groove; 132: buckle; 2: cover plate; 21: first connecting part; 22: second connecting part; 3: connecting piece;

[0029] 200: battery; 201: pole; 202: explosion-proof valve;

[0030] 300: Collect the wiring harness. DETAILED DESCRIPTION

[0031] Reference below Figure 1-Figure 8 A protection structure 100 for a battery 200 according to an embodiment of the first aspect of the present utility model is described.

[0032] like Figure 1-Figure 8 As shown, the protection structure 100 for the battery 200 according to the first embodiment of the utility model includes a protection bracket 1 and a cover plate 2.

[0033] Specifically, the protective bracket 1 is formed with a first through hole 111 and a second through hole 112. The first through hole 111 is suitable for matching with the pole 201 of the battery 200, and the second through hole 112 is suitable for facing the explosion-proof valve 202 of the battery 200. The cover plate 2 is arranged on the protective bracket 1 in a first direction (for example, Figure 1 On one side of the vertical direction in the first direction, the cover plate 2 blocks the second through hole 112 on the projection surface in the first direction.

[0034] For example, in Figure 1-Figure 3 and Figure 6-Figure 8 In the example, the protective bracket 1 is installed on the side where the pole 201 and the explosion-proof valve 202 of the battery 200 are located to protect the pole 201 and the explosion-proof valve 202. The first through hole 111 on the protective bracket 1 is suitable for the pole 201 of the battery 200 to pass through, so that the pole 201 is exposed in the first through hole 111, which is convenient for welding and use of the pole 201. The second through hole 112 on the protective bracket 1 is adapted to the explosion-proof valve 202 so that the explosion-proof valve 202 corresponds to the second through hole 112. When a certain battery cell of the battery 200 is in thermal runaway, the explosion-proof valve 202 opens so that the high-temperature electrolyte inside the battery 200 can be sprayed out along the second through hole 112 to prevent the high-temperature electrolyte from spreading to other batteries or the collection harness 300, thereby increasing the safety of the battery 200 and extending the service life of the battery 200.

[0035] The cover plate 2 is arranged at one end of the second through hole 112 away from the explosion-proof valve 202 to shield the second through hole 112. Thus, during the welding process of the battery 200, it is possible to effectively prevent slag from splashing onto the explosion-proof valve 202 and causing the explosion-proof valve 202 to fail. At the same time, after the welding is completed, it is not necessary to remove the cover plate 2. At this time, the cover plate 2 can further protect the explosion-proof valve 202, reduce tooling development, reduce costs, and avoid interference between surrounding components and the explosion-proof valve 202 during the use of the battery 200, thereby avoiding damage to the explosion-proof valve 202. In addition, when a certain cell of the battery 200 is thermally runaway and the explosion-proof valve 202 is opened, the cover plate 2 can also intercept the spraying of the high-temperature electrolyte to a certain extent, that is, when the amount of the sprayed high-temperature electrolyte is small, it can be limited to the inner wall of the second through hole 112, the explosion-proof valve 202 and the space defined by the cover plate 2, so as to prevent the high-temperature electrolyte from being directly sprayed out of the battery 200 and causing high-temperature damage to surrounding components, thereby further improving the safety of the battery 200.

[0036] Among them, the protective bracket 1 and the cover plate 2 are detachably connected. For example, the protective bracket 1 and the cover plate 2 can be connected by rivets. The rivets are made of insulating flame-retardant material and meet the flame-retardant requirements of UL94-V0. When disassembling, the cover plate 2 can be removed by removing the rivets. The disassembly method is simple, which is convenient for the installation and subsequent maintenance of the protective structure 100 on the battery 200. At the same time, when any one of the protective bracket 1 and the cover plate 2 is damaged, the protective bracket 1 or the cover plate 2 can be replaced separately, thereby saving the maintenance cost of the protective structure 100. In addition, the protective bracket 1 and the cover plate 2 are detachably connected, which can reduce the development difficulty and development cost of the protective structure 100, while increasing the integration of the protective structure 100 and reducing the production process of the protective structure 100, which is conducive to improving the production efficiency and production qualification rate of the protective structure 100, thereby improving the market competitiveness of the protective structure 100.

[0037] According to the protective structure 100 for the battery 200 of the embodiment of the utility model, a protective bracket 1 is installed on the side of the battery 200 with the pole 201, and a second through hole 112 opposite to the explosion-proof valve 202 is formed on the protective bracket 1. A cover plate 2 is provided at one end of the second through hole 112 away from the battery 200, and the cover plate 2 shields the explosion-proof valve 202. Therefore, during the welding process, the explosion-proof valve 202 failure caused by slag splashing can be effectively avoided. At the same time, after the welding is completed, there is no need to remove the cover plate 2. The cover plate 2 can further protect the explosion-proof valve 202, which reduces tooling development and reduces costs. It can also avoid interference between surrounding components and the explosion-proof valve 202 during the use of the battery 200, thereby avoiding damage to the explosion-proof valve 202. At the same time, when the battery cell is thermally runaway and the explosion-proof valve 202 is opened, the cover plate 2 can also intercept the spraying of the high-temperature electrolyte to a certain extent, so as to avoid the high-temperature electrolyte from being directly sprayed out of the battery 200 and causing high-temperature damage to surrounding components, thereby improving the safety of the battery 200.

[0038] According to some embodiments of the present invention, referring to Figure 1-Figure 3 , and combined with Figure 6-Figure 8 A collection harness 300 is provided between the protection bracket 1 and the cover plate 2. The collection harness 300 is suitable for connecting with the pole 201 to complete the electrical connection between the collection harness 300 and the pole 201. In the first direction, the collection harness 300 is provided on the side of the protection bracket 1 away from the battery 200, which is conducive to reducing the distance between the protection bracket 1 and the battery 200 and increasing the installation stability of the protection bracket 1 on the battery 200.

[0039] On the projection surface in the first direction, the cover plate 2 shields the collection harness 300. The cover plate 2 protects the collection harness 300, effectively preventing the collection harness 300 from being damaged by slag splashes during the welding process of the battery 200, and also preventing the surrounding components from interfering with the collection harness 300 during the use of the battery 200. At the same time, after the welding is completed, there is no need to remove the cover plate 2. At this time, the cover plate 2 can further protect the collection harness 300, reduce tooling development, reduce costs, and prevent the surrounding components from interfering with the collection harness 300 during the use of the battery 200, thereby preventing the collection harness 300 from being damaged. In addition, when a certain cell of the battery 200 is thermally runaway and the explosion-proof valve 202 is opened, the cover plate 2 can also intercept the spray of high-temperature electrolyte to a certain extent, that is, to prevent the sprayed high-temperature electrolyte from directly contacting the collection harness 300 when it falls back, causing high-temperature damage to the collection harness 300, further improving the safety of the battery 200.

[0040] Further, refer to Figure 1 , Figure 7 and Figure 8 The cover plate 2 includes a first connection portion 21 and a second connection portion 22 connected to each other, the first connection portion 21 is opposite to the explosion-proof valve 202, and the second connection portion 22 is opposite to the collection harness 300. The thickness of the first connection portion 21 is less than the thickness of the second connection portion 22 in the first direction.

[0041] The thickness of the first connecting portion 21 in the first direction is relatively small. When the amount of high-temperature electrolyte sprayed out of the battery cell exceeds the volume of the space defined by the inner wall of the second through hole 112, the explosion-proof valve 202 and the cover plate 2, the high-temperature electrolyte can melt at least a portion of the first connecting portion 21 to allow the high-temperature electrolyte to spray out, thereby preventing the high-temperature electrolyte in the second through hole 112 from spreading circumferentially toward the explosion-proof valve 202, thereby improving the safety of the battery 200.

[0042] The second connection part 22 has a larger thickness in the first direction. When the high-temperature electrolyte melts the entire first connection part 21 and sprays out and then falls back onto the second connection part 22, the high-temperature electrolyte is prevented from melting and penetrating the second connection part 22 and contacting the collection harness 300, thereby preventing the collection harness 300 from being damaged by high temperature and causing a short circuit, thereby preventing the spread of thermal runaway and ensuring the safety of the battery 200.

[0043] Furthermore, refer to Figure 4 and Figure 5, in the first direction, part of the second connection part 22 is recessed in the direction away from the explosion-proof valve 202 to form the first connection part 21. As a result, it is beneficial to increase the volume of the space defined by the inner wall of the second through hole 112, the explosion-proof valve 202 and the cover plate 2, so as to increase the volume for accommodating high-temperature electrolyte. In addition, while reducing the thickness of the first connection part 21 in the first direction, the flatness of the surface of the cover plate 2 away from the protective bracket 1 is ensured, thereby increasing the flatness of the surface of the protective structure 100, which is beneficial to the stacking of the battery 200 installed with the protective structure 100.

[0044] According to some specific embodiments of the present invention, Figure 5 , the thickness of the first connection part 21 in the first direction is D1, and the thickness of the second connection part 22 in the first direction is D2, wherein D1 and D2 respectively satisfy: D1≤0.2mm, 0.7mm≤D2≤3.0mm. When D1>0.2mm, the thickness of the first connection part 21 in the first direction is relatively large, and the high-temperature electrolyte in the battery cell is difficult to melt the first connection part 21. When the pressure in the space defined by the inner wall of the second through hole 112, the explosion-proof valve 202 and the cover plate 2 is relatively large, the high-temperature electrolyte is easy to spread in the circumferential direction of the explosion-proof valve 202, thereby causing the spread of thermal runaway. Therefore, by setting the thickness of the first connection part 21 in the first direction to D1≤0.2mm, the design of the thickness of the first connection part 21 in the first direction is more reasonable, which satisfies the protective effect of the explosion-proof valve 202 while facilitating the high-temperature electrolyte to melt the first connection part 21 and then spray out, thereby avoiding the spread of thermal runaway in the circumferential direction of the explosion-proof valve 202.

[0045] When D2 is less than 0.7 mm, the thickness of the second connection part 22 in the first direction is small, and the high-temperature electrolyte ejected from the first connection part 21 falls back to the second connection part 22. The high-temperature electrolyte is easy to melt and penetrate the second connection part 22 and contact the collection harness 300, causing the collection harness 300 to short-circuit, so that the protection effect of the protection structure 100 is poor; when D2 is greater than 3.0 mm, the thickness of the second connection part 22 in the first direction is large. On the basis of satisfying the protection of the collection harness 300 by the second connection part 22, the weight of the second connection part 22 is increased, thereby increasing the weight of the protection structure 100. Therefore, by setting the thickness of the second connection part 22 in the first direction to 0.7 mm ≤ D2 ≤ 3.0 mm, the thickness design of the second connection part 22 in the first direction is more reasonable, that is, the second connection part 22 has a better protection effect on the collection harness 300, and is also conducive to controlling the weight of the protection structure 100 and improving the applicability of the protection structure 100.

[0046] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 , combined with Figure 6-Figure 8The protective bracket 1 includes a bracket body 11 and a first protrusion 12. The bracket body 11 is formed with a first through hole 111 and a second through hole 112. The first protrusion 12 is provided on the bracket body 11, and the first protrusion 12 extends along the circumference of the second through hole 112, and the first protrusion 12 abuts against the cover plate 2. The bracket body 11 is suitable for connecting to the surface of the battery 200, and the first through hole 111 on the bracket body 11 corresponds to the pole 201 of the battery 200, and the second through hole 112 corresponds to the explosion-proof valve 202.

[0047] The first protrusion 12 extends along the first direction toward the cover plate 2, and the first protrusion 12 is opposite to the explosion-proof valve 202, so that the first protrusion 12 is used to guide and drain the high-temperature electrolyte sprayed from the battery cell, and guide the high-temperature electrolyte to spray along the first direction, further preventing the spread of thermal runaway caused by the circumferential flow of the high-temperature electrolyte along the explosion-proof valve 202. The cover plate 2 blocks the end of the first protrusion 12 away from the bracket body 11, thereby increasing the sealing of the space defined by the explosion-proof valve 202, the inner wall of the first protrusion 12 and the cover plate 2, further preventing the spread of the high-temperature electrolyte, and thus making the battery 200 more safe in use.

[0048] Furthermore, the protective bracket 1 further includes a plurality of second protrusions 13. In the description of the present utility model, the meaning of "plurality" is two or more. The plurality of second protrusions 13 and the first protrusion 12 are arranged on the same side of the bracket body 11 in the first direction, and the plurality of second protrusions 13 are arranged along the second direction (for example, Figure 1 The two adjacent second protrusions 13 and the bracket body 11 jointly define a mounting groove 131, in which a collection harness 300 is disposed, and the second direction is perpendicular to the first direction.

[0049] For example, in Figure 2 and Figure 6 In the example, twelve second protrusions 13 are provided at intervals on the bracket body 11, eight of which are provided adjacent to the first protrusions 12, and a total of four installation slots 131 are defined. That is, each first protrusion 12 is provided with two second protrusions 13 on both sides of the second direction, and the two second protrusions 13 on the same side of each first protrusion 12 define a installation slot 131, the collection harness 300 is in the installation slot 131, and the collection harness 300 is provided along the third direction (for example, Figure 1 Thus, the second protrusion 13 forms protection for both sides of the collection harness 300 in the second direction, and the second protrusion 13 can limit the movement of the collection harness 300 in the second direction, thereby ensuring the stability of the collection harness 300.

[0050] Furthermore, refer to Figure 2 and Figure 3, at least one buckle 132 is provided on each second protrusion 13. The protective structure 100 also includes a connector 3, which is provided on the bracket body 11 and is suitable for connecting with the pole 201. The connector 3 cooperates with the buckle 132 to stop the bracket body 11 and the connector 3, and the connector 3 blocks the pole 201 on the projection surface in the first direction. Among them, the connector 3 is suitable for connecting the poles 201 of two adjacent battery cells. One or two buckles 132 are provided on the side of the second protrusion 13 facing the connector 3.

[0051] During installation, the connector 3 is placed on the side of the bracket body 11 away from the battery 200, and then the second protrusion 13 is deformed to make the buckle 132 cooperate with the connector 3, so that the surface of one side of the connector 3 in the first direction stops against the surface of the bracket body 11, and the surface of the other side of the connector 3 in the first direction stops against the buckle 132, that is, the connector 3 is clamped between the bracket body 11 and the buckle 132, which increases the stability of the connector 3 connecting the pole 201, thereby improving the electrical connection stability of the battery 200. At the same time, the connector 3 forms a protection for the pole 201, preventing the surrounding parts of the battery 200 from damaging the pole 201, and also preventing the high-temperature electrolyte in the battery cell from spraying out and then falling back to damage the pole 201, thereby extending the service life of the battery 200.

[0052] According to some embodiments of the utility model, the cover plate 2 includes at least one of a muscovite mica sheet, a phlogopite mica sheet, and a thermoplastic polyimide sheet. Among them, the muscovite mica sheet has the advantages of no pollution, insulation, and good voltage resistance; the phlogopite mica sheet has good electrical properties, mechanical properties, heat resistance, and chemical stability; the thermoplastic polyimide sheet has the advantages of high strength, high temperature resistance, chemical corrosion resistance, good dielectric properties, and radiation resistance. By using at least one of the muscovite mica sheet, the phlogopite mica sheet, and the thermoplastic polyimide sheet, it is beneficial to improve the pressure resistance and corrosion resistance of the cover plate 2, and to improve the service life of the cover plate 2, thereby improving the market competitiveness of the protective structure 100.

[0053] like Figure 6-Figure 8 As shown, the battery 200 according to the second embodiment of the utility model includes the protective structure 100 for the battery 200 according to the first embodiment of the utility model.

[0054] According to the battery 200 of the embodiment of the utility model, by adopting the above-mentioned protective structure 100 for the battery 200, it is avoided that a certain battery cell in the battery 200 affects the use of the battery 200 after thermal runaway, which is beneficial to improving the use stability of the battery 200 and extending the service life of the battery 200.

[0055] Other structures and operations of the protection structure 100 and the battery 200 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0056] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A protective structure for a battery, characterized in that: include: A protective bracket, wherein a first through hole and a second through hole are formed on the protective bracket, wherein the first through hole is suitable for cooperating with a pole of a battery, and the second through hole is suitable for being opposite to an explosion-proof valve of the battery; A cover plate is arranged on one side of the protective bracket in the first direction, and on a projection surface in the first direction, the cover plate blocks the second through hole.

2. The protective structure for a battery according to claim 1, characterized in that: A collection harness is provided between the protective bracket and the cover plate, and the collection harness is suitable for connecting to the pole; On the projection surface in the first direction, the cover plate shields the collection harness.

3. The protective structure for a battery according to claim 2, characterized in that: The cover plate includes a first connection portion and a second connection portion connected to each other, the first connection portion is opposite to the explosion-proof valve, and the second connection portion is opposite to the collection harness; The thickness of the first connection portion in the first direction is smaller than the thickness of the second connection portion.

4. The protective structure for a battery according to claim 3, characterized in that: In the first direction, a portion of the second connection portion is recessed in a direction away from the explosion-proof valve to form the first connection portion.

5. The protective structure for a battery according to claim 3, characterized in that: The thickness of the first connection portion in the first direction is D1, and the thickness of the second connection portion in the first direction is D2, wherein D1 and D2 respectively satisfy: D1≤0.2mm, 0.7mm≤D2≤3.0mm.

6. The protective structure for a battery according to claim 2, characterized in that: The protective bracket comprises: A bracket body, wherein the first through hole and the second through hole are formed on the bracket body; A first protrusion, wherein the first protrusion is disposed on the bracket body, the first protrusion extends along the circumference of the second through hole, and the first protrusion abuts against the cover plate.

7. The protective structure for a battery according to claim 6, characterized in that: The protective bracket also includes: A plurality of second protrusions, wherein the plurality of second protrusions and the first protrusion are arranged on the same side of the bracket body in the first direction, the plurality of second protrusions are spaced apart along the second direction, two adjacent second protrusions and the bracket body jointly define an installation groove, the collection harness is arranged in the installation groove, and the second direction is perpendicular to the first direction.

8. The protective structure for a battery according to claim 7, characterized in that: Each of the second protrusions is provided with at least one buckle; The protective structure also includes: A connecting piece is arranged on the bracket body and is suitable for connecting with the pole. The connecting piece and the buckle cooperate to make the bracket body and the connecting piece stop, and the connecting piece blocks the pole on the projection surface of the first direction.

9. The protective structure for a battery according to any one of claims 1 to 8, characterized in that: The cover plate includes at least one of a muscovite mica sheet, a phlogopite mica sheet and a thermoplastic polyimide sheet.

10. A battery, characterized in that: The invention comprises a protective structure for a battery according to any one of claims 1 to 9.

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