End plate of power battery module

Abstract

The utility model relates to the technical field of power battery modules, in particular to a power battery module end plate which comprises a first end plate cover, a second end plate cover is arranged on one side of the first end plate cover, and a self-adaptive mechanism is arranged between the first end plate cover and the second end plate cover. The power battery module end plate has the beneficial effects that by arranging the self-adaptive mechanism, when the power battery module end plate is used, the situation that heat produced by a battery module is increased due to the fact that the expansion pressure of the battery module is nowhere to release is avoided, and heat around the battery module can be reduced, so that the influence of the heat on the battery module is reduced; therefore, the first contact block and the second contact block can be always attached to the end part of the battery module in a self-adaptive manner, and the situation that part of the first contact block or the second contact block cannot be attached to the end part of the battery due to different expansion degrees of different batteries in the battery module is avoided, so that the stability between the end plate and the battery module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery modules, in particular to an end plate of a power battery module. Background Art

[0002] The power battery module is one of the core components in the field of new energy vehicles. The general structure of batteries used in the new energy field today is to connect and install multiple groups of square battery modules together, and each group of battery modules is separated by end plates. The function of the end plates is to provide channels for the routing of each battery module and installation space for various detection units. At the same time, they also provide heat dissipation for each battery module, reduce the thermal expansion coefficient of the battery, and reduce safety risks.

[0003] A power battery module end plate disclosed in announcement number CN218334113U includes a combined battery end plate mechanism, the combined battery end plate mechanism includes a first end plate cover and a second end plate cover, the first end plate cover is provided with two first heat dissipation openings, the second end plate cover is provided with a mounting groove on a side close to the first end plate cover, two second heat dissipation openings are provided on the lower side of the inner wall of the mounting groove, and ten X-shaped support frames are linearly arranged at equal intervals in the mounting groove, each X-shaped support frame includes an X-shaped support block, four welding parts and two reinforcing ribs.

[0004] However, the power battery module end plate still has the following problems during actual use:

[0005] Although the existing end plates can eliminate the thermal expansion coefficient of the battery to a certain extent by dissipating the heat of the battery, they cannot completely eliminate the expansion of the battery. Therefore, during the operation of the battery, slight expansion is inevitable over a long period of time, causing the end plate to be compressed. Since the force is mutual, while the end plate is compressed, the end plate will also generate pressure on the battery, making it impossible to release the battery expansion pressure, thereby increasing the heat generation of the battery, thus entering a vicious circle, until the end plate is deformed by the pressure of the battery expansion and cannot be used, affecting the service life of the battery.

[0006] Therefore, the present application proposes a power battery module end plate to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a power battery module end plate.

[0008] The purpose of the utility model is achieved by the following technical solutions: A power battery module end plate, comprising a first end plate cover, a second end plate cover is arranged on one side of the first end plate cover, and an adaptive mechanism is arranged between the first end plate cover and the second end plate cover;

[0009] The adaptive mechanism comprises a connecting component, a first adaptive component and a second adaptive component are hingedly connected to the connecting component, and the first adaptive component and the second adaptive component are hingedly connected to each other through a spring shaft;

[0010] The first adaption assembly includes a first connecting rod, a first sliding groove is provided on the first connecting rod, a first slider is slidably connected inside the first sliding groove, a first elastic member is provided on the first slider, a first connecting ball is hinged on the first slider, a first contact block is provided on the first connecting ball, a first roller is provided at one end of the first connecting rod, and a second roller is provided at the end of the first connecting rod away from the first roller;

[0011] The structure of the second adaptation component is the same as that of the first adaptation component.

[0012] Preferably, the first end plate cover is provided with a first through slot, a second through slot and a first mounting hole.

[0013] Preferably, a mounting groove and a second mounting hole are provided on the second end plate cover, the connecting assembly is located inside the mounting groove, and a heat dissipation port is provided inside the mounting groove.

[0014] Preferably, the connecting assembly comprises a connecting plate, an elastic telescopic rod is arranged on the connecting plate, and a connecting block is arranged at one end of the elastic telescopic rod away from the connecting plate.

[0015] Preferably, the first elastic member is located inside the first sliding groove, and one end of the first elastic member away from the first sliding block is fixedly connected to the first connecting rod.

[0016] Preferably, the first contact block is located inside the first through groove.

[0017] Preferably, the first roller contacts the first end plate cover, and the second roller contacts the second end plate cover.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The power battery module end plate is provided with an adaptive mechanism, which can avoid the situation in which the pressure of the battery module expansion has nowhere to be released, resulting in increased heat generation of the battery module, and can reduce the heat around the battery module, thereby reducing the influence of the heat on the battery module. In the process of battery module expansion, the first contact block and the second contact block can always be adaptively fitted to the end of the battery module, avoiding the situation in which some of the first contact blocks or the second contact blocks cannot fit the end of the battery due to different expansion degrees of different batteries in the battery module, thereby ensuring the stability between the end plate and the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the split structure of an embodiment of the utility model;

[0023] Figure 3 This is a schematic structural diagram of the first end plate cover of an embodiment of the utility model;

[0024] Figure 4 This is a schematic structural diagram of the second end plate cover of an embodiment of the utility model;

[0025] Figure 5 This is a schematic structural diagram of the adaptive mechanism of the embodiment of the utility model from a first viewing angle;

[0026] Figure 6 This is a structural schematic diagram of the adaptive mechanism of the utility model embodiment from a second viewing angle;

[0027] Figure 7 It is a partial cross-sectional structural schematic diagram of the adaptive mechanism of an embodiment of the utility model.

[0028] In the figure: 1. first end plate cover; 101. first through slot; 102. second through slot; 103. first mounting hole; 2. second end plate cover; 201. mounting slot; 202. second mounting hole; 203. heat dissipation port; 3. adaptive mechanism; 31. connecting assembly; 311. connecting plate; 312. elastic telescopic rod; 313. connecting block; 32. first adaptive assembly; 321. first connecting rod; 322. first slide slot; 323. first slider; 324. first elastic member; 325. first connecting ball; 326. first contact block; 327. first roller; 328. second roller; 33. second adaptive assembly; 331. second connecting rod; 332. second slide slot; 333. second slider; 334. second elastic member; 335. second connecting ball; 336. second contact block; 337. third roller; 338. fourth roller. DETAILED DESCRIPTION

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection 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 the present invention can be understood by specific circumstances.

[0031] Additional aspects and advantages of the present invention will be further described below in conjunction with the accompanying drawings, and some will become apparent from the following description or be learned through practice of the present invention.

[0032] like Figure 1 and Figure 2 As shown, a power battery module end plate includes a first end plate cover 1, a second end plate cover 2 is arranged on one side of the first end plate cover 1, an adaptive mechanism 3 is arranged between the first end plate cover 1 and the second end plate cover 2, and the number of the adaptive mechanisms 3 is multiple and evenly distributed between the first end plate cover 1 and the second end plate cover 2.

[0033] like Figure 3 As shown, the first end plate cover 1 is provided with a first through slot 101 , a second through slot 102 and a first mounting hole 103 .

[0034] like Figure 4 As shown, a mounting groove 201 and a second mounting hole 202 are provided on the second end plate cover 2 , the connecting assembly 31 is located inside the mounting groove 201 , and a heat dissipation port 203 is provided inside the mounting groove 201 .

[0035] like Figure 5 and Figure 6As shown, the adaptive mechanism 3 includes a connecting component 31, a first adaptive component 32 and a second adaptive component 33. The first adaptive component 32 and the second adaptive component 33 are hinged on the connecting component 31, and the first adaptive component 32 and the second adaptive component 33 are hinged to each other.

[0036] like Figure 7 As shown, the connecting assembly 31 includes a connecting plate 311, an elastic telescopic rod 312 and a connecting block 313. The connecting plate 311 is provided with an elastic telescopic rod 312, and a connecting block 313 is provided at one end of the elastic telescopic rod 312 away from the connecting plate 311. The number of the elastic telescopic rod 312 and the connecting block 313 are both two, and the two elastic telescopic rods 312 are symmetrically distributed on the connecting plate 311.

[0037] like Figure 7 As shown, the first adaptation component 32 includes a first connecting rod 321, a first sliding groove 322, a first slider 323, a first elastic member 324, a first connecting ball 325, a first contact block 326, a first roller 327 and a second roller 328. The first connecting rod 321 is provided with a first sliding groove 322, the interior of the first sliding groove 322 is slidably connected with the first slider 323, the first slider 323 is provided with a first elastic member 324, the first elastic member 324 is located inside the first sliding groove 322, one end of the first elastic member 324 away from the first slider 323 is fixedly connected to the first connecting rod 321, the first slider 323 is hinged with a first connecting ball 325, and the first connecting ball 325 is provided with a first contact block 326, as shown in FIG. Figure 1 , Figure 3 and Figure 7 As shown, the first contact block 326 is located inside the first through slot 101. Figure 7 As shown, a first roller 327 is disposed at one end of the first connecting rod 321, and a second roller 328 is disposed at one end of the first connecting rod 321 away from the first roller 327. Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the first roller 327 is in contact with the first end plate cover 1 , and the second roller 328 is in contact with the second end plate cover 2 .

[0038] like Figure 7As shown, the second adaptation component 33 includes a second connecting rod 331, a second sliding groove 332, a second slider 333, a second elastic member 334, a second connecting ball 335, a second contact block 336, a third roller 337 and a fourth roller 338. The second connecting rod 331 is hinged to the first connecting rod 321 through a spring shaft. The second connecting rod 331 is provided with a second sliding groove 332. The second slider 333 is slidably connected inside the second sliding groove 332. The second slider 333 is provided with a second elastic member 334. The second elastic member 334 is located inside the second sliding groove 332. The end of the second elastic member 334 away from the second slider 333 is fixedly connected to the second connecting rod 331. The second slider 333 is hinged with a second connecting ball 335. The second connecting ball 335 is provided with a second contact block 336. Figure 1 , Figure 3 and Figure 7 As shown, the second contact block 336 is located inside the second through slot 102. Figure 7 As shown, a third roller 337 is disposed at one end of the second connecting rod 331, and a fourth roller 338 is disposed at one end of the second connecting rod 331 away from the third roller 337. Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, the third roller 337 is in contact with the first end plate cover 1 , and the fourth roller 338 is in contact with the second end plate cover 2 .

[0039] The working process is as follows:

[0040] S1. When in use, the end plate is mounted on the end of the power battery module through the first mounting hole 103 and the second mounting hole 202, and the first contact block 326 and the second contact block 336 are in contact with the end of the power battery module;

[0041] S2. When the battery module expands during operation, the first contact block 326 or the second contact block 336 corresponding to the expanded portion is pushed, so that the first slider 323 and the second slider 333 slide in the first slide groove 322 and the second slide groove 332 respectively, and the elastic telescopic rod 312 contracts, so as to avoid the situation where the pressure of the battery module expansion has nowhere to be released, resulting in increased heat generation of the battery module;

[0042] S3. The heat generated by the battery module can be dissipated outward through the first through groove 101, the second through groove 102 and the heat dissipation port 203, thereby reducing the heat around the battery module and thus reducing the influence of the heat on the battery module;

[0043] S4. At the same time, when the battery expands, the first contact block 326 and the second contact block 336 subjected to the pressure of the battery can rotate on the first slider 323 and the second slider 333 through the first connecting ball 325 and the second connecting ball 335, and the first connecting rod 321 and the second connecting rod 331 hinged to each other through the elastic shaft can also rotate relatively, and the first connecting rod 321 and the second connecting rod 331 can rotate on the connecting block 313;

[0044] S5. The first contact block 326 and the second contact block 336 can always adaptively fit the end of the battery module during the expansion of the battery module, avoiding the situation where some of the first contact blocks 326 or the second contact blocks 336 cannot fit the end of the battery due to the different expansion degrees of different batteries in the battery module, thereby ensuring the stability between the end plate and the battery module.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A power battery module end plate, characterized in that: It comprises a first end plate cover (1), a second end plate cover (2) is arranged on one side of the first end plate cover (1), and an adaptive mechanism (3) is arranged between the first end plate cover (1) and the second end plate cover (2); The adaptive mechanism (3) comprises a connecting component (31), a first adaptive component (32) and a second adaptive component (33) being hingedly connected to the connecting component (31), and the first adaptive component (32) and the second adaptive component (33) are hingedly connected to each other via a spring shaft; The first adapting component (32) comprises a first connecting rod (321), the first connecting rod (321) is provided with a first sliding groove (322), the first sliding groove (322) is slidably connected to a first sliding block (323), the first sliding block (323) is provided with a first elastic member (324), the first sliding block (323) is hinged with a first connecting ball (325), the first connecting ball (325) is provided with a first contact block (326), one end of the first connecting rod (321) is provided with a first roller (327), and the end of the first connecting rod (321) away from the first roller (327) is provided with a second roller (328); The structure of the second adaptation component (33) is the same as that of the first adaptation component (32).

2. A power battery module end plate according to claim 1, characterized in that: The first end plate cover (1) is provided with a first through slot (101), a second through slot (102) and a first mounting hole (103).

3. The power battery module end plate according to claim 1, characterized in that: The second end plate cover (2) is provided with a mounting groove (201) and a second mounting hole (202), the connection assembly (31) is located inside the mounting groove (201), and a heat dissipation port (203) is provided inside the mounting groove (201).

4. The power battery module end plate according to claim 1, characterized in that: The connection assembly (31) comprises a connection plate (311), an elastic telescopic rod (312) is arranged on the connection plate (311), and a connection block (313) is arranged at one end of the elastic telescopic rod (312) away from the connection plate (311).

5. The power battery module end plate according to claim 1, characterized in that: The first elastic member (324) is located inside the first sliding groove (322), and one end of the first elastic member (324) away from the first sliding block (323) is fixedly connected to the first connecting rod (321).

6. A power battery module end plate according to claim 2, characterized in that: The first contact block (326) is located inside the first through groove (101).

7. The power battery module end plate according to claim 1, characterized in that: The first roller (327) is in contact with the first end plate cover (1), and the second roller (328) is in contact with the second end plate cover (2).

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