Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack. The battery module comprises a plurality of battery monomers, a plurality of fixing assemblies, a fixing rod and a bracket, the plurality of fixing assemblies are arranged on the bracket at intervals, the fixing rod is used for connecting and fixing the plurality of fixing assemblies in series, and each fixing assembly comprises a first fixing plate, a second fixing plate and an elastic piece, the elastic piece is clamped and fixed between the first fixing plate and the second fixing plate, the first fixing plate is fixedly connected to the bracket, the second fixing plate is movably connected to the bracket, one side of the battery monomer is propped against the second fixing plate of one fixing assembly, and the other side of the battery monomer is propped against the second fixing plate of the other fixing assembly. And the other side of the single battery is abutted against the first fixing plate of the other fixing assembly, so that the single battery is clamped and fixed between the corresponding first fixing plate and the second fixing plate.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a battery module and a battery pack. Background Art

[0002] Soft-pack batteries have the characteristics of high energy density, high safety and light weight, which makes them increasingly widely used in the automotive field. Their unique advantages make them an important power source for electric vehicles and other types of vehicles.

[0003] During the assembly of a soft-pack battery module, brackets secure the fixing plates, with the soft-pack batteries clamped between two adjacent fixing plates. This not only secures the soft-pack batteries but also dissipates heat. However, due to the interference fit of the fixing plates on both sides against the soft-pack batteries, road sway in automotive applications increases the pressure of the fixing plates on the soft-pack batteries, which can damage the internal components of the soft-pack batteries and shorten the battery life. Furthermore, the fixed fixing plates on both sides make it difficult to replace or repair the soft-pack batteries clamped between the two plates.

[0004] Therefore, there is an urgent need for a fixing structure that avoids excessive pressing force and is easy to disassemble and assemble. Utility Model Content

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide a battery module and battery pack that avoid excessive compression force and are easy to disassemble and assemble.

[0006] The purpose of this disclosure is achieved through the following technical solutions:

[0007] A battery module, comprising:

[0008] A plurality of battery cells, a plurality of fixing components, a fixing rod and a bracket, wherein the plurality of fixing components are arranged at intervals on the bracket, and the fixing rod is used to connect and fix the plurality of fixing components in series.

[0009] Each of the fixing assemblies includes a first fixing plate, a second fixing plate and an elastic member, the elastic member is clamped and fixed between the first fixing plate and the second fixing plate, the first fixing plate is fixedly connected to the bracket, and the second fixing plate is movably connected to the bracket, one side of the battery cell abuts against the second fixing plate of one of the fixing assemblies, and the other side of the battery cell abuts against the first fixing plate of the other fixing assembly, so that the battery cell is clamped and fixed between the corresponding first fixing plate and the second fixing plate.

[0010] In one embodiment, the first fixing plate defines a first fixing groove, the second fixing plate defines a second fixing groove, and two ends of the elastic member are respectively located in the first fixing groove and the second fixing groove.

[0011] In one embodiment, the battery module further includes screws, first screw holes are provided on both sides of the bracket, and second screw holes are provided on both sides of the first fixing plate, and the screws pass through the corresponding first screw holes and the second screw holes in sequence to fix the first fixing plate to the bracket.

[0012] In one embodiment, a first sliding groove is provided on one side of the bracket, and a second sliding groove is provided on the other side of the bracket. The first sliding groove and the second sliding groove are arranged opposite to each other. A first clamping column is protruding from one side of the second fixing plate, and a second clamping column is protruding from the other side of the second fixing plate. Part of the first clamping column is located in the first sliding groove, and part of the second clamping column is located in the second sliding groove, so that the second fixing plate and the bracket are movably connected.

[0013] In one embodiment, the elastic member is a spring.

[0014] In one embodiment, there are multiple elastic members, and the multiple elastic members are evenly distributed between the first fixing plate and the second fixing plate.

[0015] In one embodiment, the first fixing plate is provided with a first embedding groove, the second fixing plate is provided with a second embedding groove, the first embedding groove and the second embedding groove are provided correspondingly, and parts of the battery cell are respectively located in the first embedding groove and the second embedding groove.

[0016] In one embodiment, the first fixing plate is provided with a first serial connection hole, the second fixing plate is provided with a second serial connection hole, the first serial connection hole and the second serial connection hole are correspondingly arranged, and the fixing rod passes through the first serial connection hole and the second serial connection hole in sequence.

[0017] In one embodiment, the first fixing plate is an aluminum plate; and / or,

[0018] The second fixing plate is an aluminum plate.

[0019] A battery pack comprises the battery module described in any of the above embodiments.

[0020] Compared with the prior art, the present disclosure has at least the following advantages:

[0021] 1. In the above-mentioned battery module, the elastic member is clamped and fixed between the first fixing plate and the second fixing plate, the first fixing plate is fixedly connected to the bracket, and the second fixing plate is movably connected to the bracket, that is, the second fixing plate can move relative to the bracket, one side of the battery cell abuts against the first fixing plate in one of the fixing assemblies, and the other side of the battery cell abuts against the second fixing plate in the other fixing assembly, so that the battery cell is clamped and fixed between the first fixing plate and the second fixing plate, and when the elastic member is compressed, the second fixing plate reduces the pressing force on the battery cell to avoid excessive pressing force on the battery cell, thereby avoiding damage to structural parts in the battery cell and improving the service life of the battery cell.

[0022] 2. In the above-mentioned battery module, when a battery cell is damaged and needs to be replaced or repaired, the second fixing plate is moved away from the battery cell, thereby ensuring sufficient clearance between the first fixing plate and the second fixing plate to facilitate removal of the battery cell. Similarly, when the battery cell is assembled, the second fixing plate is moved away from the battery cell. At this time, the elastic member is in a semi-compressed state, so that the battery cell is clamped and fixed between the first fixing plate and the second fixing plate, thereby improving the convenience of disassembly and assembly of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 Schematic diagram of the structure of a battery module according to one embodiment;

[0025] Figure 2 for Figure 1 Another structural schematic diagram of the battery module shown;

[0026] Figure 3 for Figure 1 A schematic structural diagram of a fixing assembly of a battery module is shown;

[0027] Figure 4a for Figure 1 A schematic diagram of the back side of the first fixing plate of the battery module shown;

[0028] Figure 4b for Figure 1 A front view of the first fixing plate of the battery module shown;

[0029] Figure 5a for Figure 1 A schematic diagram of the back side of the second fixing plate of the battery module shown;

[0030] Figure 5b for Figure 1 A front view of the second fixing plate of the battery module is shown. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] The present disclosure provides a battery module, comprising a plurality of battery cells, a plurality of fixing assemblies, a fixing rod and a bracket, wherein the plurality of fixing assemblies are arranged at intervals on the bracket, the fixing rod is used to connect and fix the plurality of fixing assemblies in series, each of the fixing assemblies comprises a first fixing plate, a second fixing plate and an elastic member, the elastic member is clamped and fixed between the first fixing plate and the second fixing plate, the first fixing plate is fixedly connected to the bracket, and the second fixing plate is movably connected to the bracket, one side of the battery cell abuts against the second fixing plate of one of the fixing assemblies, and the other side of the battery cell abuts against the first fixing plate of another fixing assembly, so that the battery cell is clamped and fixed between the corresponding first fixing plate and the second fixing plate.

[0035] In the battery module described above, the elastic member is clamped and fixed between a first fixing plate and a second fixing plate. The first fixing plate is fixedly connected to the bracket, and the second fixing plate is movably connected to the bracket, that is, the second fixing plate is movable relative to the bracket. One side of the battery cell abuts the first fixing plate in one of the fixing assemblies, and the other side of the battery cell abuts the second fixing plate in the other fixing assembly. In this way, the battery cell is clamped and fixed between the first and second fixing plates. When the elastic member is compressed, the second fixing plate reduces the pressing force on the battery cell to prevent the battery cell from being subjected to excessive pressing force, thereby preventing damage to structural components within the battery cell and improving the service life of the battery cell. When the battery cell is damaged and needs to be replaced or repaired, the second fixing plate is moved away from the battery cell, thereby creating a sufficient gap between the first and second fixing plates to facilitate the removal of the battery cell. Similarly, when the battery cell is assembled, the second fixing plate is moved away from the battery cell. At this time, the elastic member is in a semi-compressed state, so that the battery cell is clamped and fixed between the first and second fixing plates, thereby improving the convenience of disassembly and assembly of the battery cell.

[0036] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0037] like Figures 1 to 3 As shown, a battery module 10 of one embodiment includes a plurality of battery cells 100 , a plurality of fixing assemblies 200 , a fixing rod 300 and a bracket 400 . The plurality of fixing assemblies 200 are spaced apart on the bracket 400 , and the fixing rod 300 is used to connect and fix the plurality of fixing assemblies 200 in series. Each of the fixing assemblies 200 includes a first fixing plate 210, a second fixing plate 220 and an elastic member 230. The elastic member 230 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220. The first fixing plate 210 is fixedly connected to the bracket 400, and the second fixing plate 220 is movably connected to the bracket 400, that is, when the elastic member 230 is compressed or extended, the second fixing plate 220 can move relative to the bracket 400. One side of the battery cell 100 abuts against the second fixing plate 220 of one of the fixing assemblies 200, and the other side of the battery cell 100 abuts against the first fixing plate 210 of another fixing assembly 200, so that the battery cell 100 is clamped and fixed between the corresponding first fixing plate 210 and the second fixing plate 220.

[0038] In this embodiment, the first fixing plate 210 is fixedly connected to the bracket 400, the second fixing plate 220 is movably connected to the bracket 400, and the elastic member 230 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220. One side of the battery cell 100 abuts against the first fixing plate 210 in one of the fixing assemblies 200, and the other side of the battery cell 100 abuts against the second fixing plate 220 in the other fixing assembly 200, that is, the battery cell 100 is clamped and fixed between the corresponding first fixing plate 210 and the second fixing plate 220. When the second fixing plate 220 is subjected to external force, the elastic member 230 is compressed, and the second fixing plate 220 moves toward the side away from the battery cell 100, so as to reduce the pressing force of the second fixing plate 220 on the battery cell 100.

[0039] In the battery module 10 described above, the elastic member 230 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220. The first fixing plate 210 is fixedly connected to the bracket 400, and the second fixing plate 220 is movably connected to the bracket 400, that is, the second fixing plate 220 can move relative to the bracket 400. One side of the battery cell 100 abuts against the first fixing plate 210 in one of the fixing assemblies 200, and the other side of the battery cell 100 abuts against the second fixing plate 220 in the other fixing assembly 200. In this way, the battery cell 100 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220, and when the elastic member 230 is compressed, the second fixing plate 220 reduces the pressing force on the battery cell 100 to avoid The battery cell 100 is subjected to excessive compression force, thereby preventing damage to the structural parts inside the battery cell 100 and increasing the service life of the battery cell 100; when the battery cell 100 is damaged and needs to be replaced or repaired, the second fixing plate 220 is moved away from the battery cell 100, thereby ensuring sufficient clearance between the first fixing plate 210 and the second fixing plate 220 to facilitate the removal of the battery cell 100. Similarly, when the battery cell 100 is assembled, the second fixing plate 220 is moved away from the battery cell 100. At this time, the elastic member 230 is in a semi-compressed state, so that the battery cell 100 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220, thereby improving the convenience of disassembly and assembly of the battery cell 100.

[0040] like Figure 3 、 Figure 4a and Figure 5aAs shown, in one embodiment, the first fixing plate 210 defines a first fixing groove 211, the second fixing plate 220 defines a second fixing groove 221, and both ends of the elastic member 230 are respectively located in the first fixing groove 211 and the second fixing groove 221. In this embodiment, both ends of the elastic member 230 are respectively located in the first fixing groove 211 and the second fixing groove 221, thereby fixing the elastic member 230 between the first fixing plate 210 and the second fixing plate 220.

[0041] like Figure 1 and Figure 2 As shown, in one embodiment, the battery module 10 further includes screws. A first screw hole 410 is provided on both sides of the bracket 400, and a second screw hole 212 is provided on both sides of the first fixing plate 210. The screws sequentially pass through the corresponding first screw holes 410 and second screw holes 212 to secure the first fixing plate 210 to the bracket 400. In this embodiment, there are multiple screws: multiple first screw holes 410 are provided on both sides of the bracket 400, and multiple second screw holes 212 are provided on both sides of the first fixing plate 210. The first fixing plate 210 and the bracket 400 are secured by multiple screws.

[0042] like Figure 1 、 Figure 2 and Figure 5b As shown, in one embodiment, a first sliding groove 420 is provided on one side of the bracket 400, and a second sliding groove 430 is provided on the other side of the bracket 400. The first sliding groove 420 and the second sliding groove 430 are arranged opposite to each other. A first clamping post 222 is protruding from one side of the second fixing plate 220, and a second clamping post 223 is protruding from the other side of the second fixing plate 220. A portion of the first clamping post 222 is located in the first sliding groove 420, and a portion of the second clamping post 223 is located in the second sliding groove 430, so that the second fixing plate 220 is movably connected to the bracket 400. In this embodiment, a first clamping post 222 and a second clamping post 223 are protruding from both sides of the second fixing plate 220, respectively. The first clamping post 222 is partially located in the first sliding groove 420, and the second clamping post 223 is partially located in the second sliding groove 430. In this way, when the elastic member 230 is compressed or extended, the second fixing plate 220 can slide relative to the bracket 400.

[0043] In another embodiment, two sides of the first fixing plate 210 are also provided with protruding clamping posts to better secure the first fixing plate 210 and the bracket 400 .

[0044] In one embodiment, the elastic member 230 is a spring, so that when the elastic member 230 is compressed or stretched, the second fixing plate 220 moves relative to the bracket 400. Of course, in other embodiments, the elastic member 230 can also be an elastic structure such as silicone or rubber.

[0045] like Figure 3 As shown, in one embodiment, the number of the elastic members 230 is multiple, and the multiple elastic members 230 are evenly distributed between the first fixing plate 210 and the second fixing plate 220, so that the force exerted by the elastic members 230 on the second fixing plate 220 is more uniform, thereby making the movement effect of the second fixing plate 220 better.

[0046] like Figure 4b and Figure 5b As shown, in one embodiment, the first fixing plate 210 defines a first embedding groove 213, and the second fixing plate 220 defines a second embedding groove 224. The first embedding groove 213 and the second embedding groove 224 are correspondingly provided, and portions of the battery cell 100 are respectively located within the first embedding groove 213 and the second embedding groove 224. In this embodiment, both sides of the battery cell 100 are respectively located within the first embedding groove 213 and the second embedding groove 224, thereby improving the clamping and fixing effect of the first fixing plate 210 and the second fixing plate 220 on the battery cell 100.

[0047] like Figure 1 、 Figure 4b and Figure 5b As shown, in one embodiment, the first fixing plate 210 defines a first serial hole 214, and the second fixing plate 220 defines a second serial hole 225. The first serial hole 214 and the second serial hole 225 are correspondingly arranged, and the fixing rod 300 sequentially passes through the first serial hole 214 and the second serial hole 225. In this embodiment, there are multiple fixing rods 300, and the number of first serial holes 214 and second serial holes 225 is also multiple. The multiple fixing rods 300 sequentially pass through the corresponding first serial holes 214 and second serial holes 225, so that the fixing rods 300 serially fix the first fixing plate 210 and the second fixing plate 220.

[0048] In one embodiment, the first fixing plate 210 is an aluminum plate. In this embodiment, the first fixing plate 210 is made of aluminum, so that the first fixing plate 210 has a better heat conduction effect on the battery cells 100, thereby improving the heat dissipation performance of the battery module 10.

[0049] In one embodiment, the second fixing plate 220 is an aluminum plate. In this embodiment, the second fixing plate 220 is made of aluminum, so that the second fixing plate 220 has a better heat conduction effect on the battery cell 100, thereby improving the heat dissipation performance of the battery module 10.

[0050] The present application also provides a battery pack, comprising the battery module 10 described in any of the above embodiments.

[0051] Compared with the prior art, the present disclosure has at least the following advantages:

[0052] 1. In the above-mentioned battery module 10, the elastic member 230 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220. The first fixing plate 210 is fixedly connected to the bracket 400, and the second fixing plate 220 is movably connected to the bracket 400, that is, the second fixing plate 220 can move relative to the bracket 400. One side of the battery cell 100 abuts against the first fixing plate 210 in one of the fixing assemblies 200, and the other side of the battery cell 100 abuts against the second fixing plate 220 in the other fixing assembly 200. In this way, the battery cell 100 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220. When the elastic member 230 is compressed, the second fixing plate 220 reduces the pressing force on the battery cell 100 to prevent the battery cell 100 from being subjected to excessive pressing force, thereby preventing damage to the structural components in the battery cell 100 and improving the service life of the battery cell 100.

[0053] 2. In the above-mentioned battery module 10, when the battery cell 100 is damaged and needs to be replaced or repaired, the second fixing plate 220 is moved away from the battery cell 100, thereby ensuring sufficient clearance between the first fixing plate 210 and the second fixing plate 220 to facilitate the removal of the battery cell 100. Similarly, when the battery cell 100 is assembled, the second fixing plate 220 is moved away from the battery cell 100. At this time, the elastic member 230 is in a semi-compressed state, so that the battery cell 100 is clamped and fixed between the first fixing plate 210 and the second fixing plate 220, thereby improving the convenience of disassembly and assembly of the battery cell 100.

[0054] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A battery module comprising a plurality of battery cells, a plurality of fixing components, a fixing rod and a bracket, wherein the plurality of fixing components are spaced apart on the bracket, and the fixing rod is used to connect and fix the plurality of fixing components in series, characterized in that: Each of the fixing assemblies includes a first fixing plate, a second fixing plate and an elastic member, the elastic member is clamped and fixed between the first fixing plate and the second fixing plate, the first fixing plate is fixedly connected to the bracket, and the second fixing plate is movably connected to the bracket, one side of the battery cell abuts against the second fixing plate of one of the fixing assemblies, and the other side of the battery cell abuts against the first fixing plate of the other fixing assembly, so that the battery cell is clamped and fixed between the corresponding first fixing plate and the second fixing plate.

2. The battery module according to claim 1, wherein: The first fixing plate is provided with a first fixing groove, the second fixing plate is provided with a second fixing groove, and two ends of the elastic member are respectively located in the first fixing groove and the second fixing groove.

3. The battery module according to claim 1, wherein: The battery module also includes screws. First screw holes are provided on both sides of the bracket, and second screw holes are provided on both sides of the first fixing plate. The screws pass through the corresponding first screw holes and second screw holes in sequence to fix the first fixing plate to the bracket.

4. The battery module according to claim 1, wherein: A first sliding groove is provided on one side of the bracket, and a second sliding groove is provided on the other side of the bracket. The first sliding groove and the second sliding groove are arranged opposite to each other. A first clamping column is protruded from one side of the second fixing plate, and a second clamping column is protruded from the other side of the second fixing plate. Part of the first clamping column is located in the first sliding groove, and part of the second clamping column is located in the second sliding groove, so that the second fixing plate is movably connected to the bracket.

5. The battery module according to claim 1, wherein: The elastic member is a spring.

6. The battery module according to claim 1, characterized in that: There are multiple elastic members, and the multiple elastic members are evenly distributed between the first fixing plate and the second fixing plate.

7. The battery module according to claim 1, characterized in that: The first fixing plate defines a first embedding groove, the second fixing plate defines a second embedding groove, the first embedding groove and the second embedding groove are correspondingly provided, and parts of the battery cell are respectively located in the first embedding groove and the second embedding groove.

8. The battery module according to claim 1, wherein: The first fixing plate is provided with a first serial connection hole, the second fixing plate is provided with a second serial connection hole, the first serial connection hole and the second serial connection hole are correspondingly arranged, and the fixing rod passes through the first serial connection hole and the second serial connection hole in sequence.

9. The battery module according to claim 1, wherein: The first fixing plate is an aluminum plate; and / or, The second fixing plate is an aluminum plate.

10. A battery pack, characterized in that: A battery module comprising the battery module according to any one of claims 1 to 9.

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