CN218957848U - Buffer heat dissipation plate and battery module - Google Patents

Abstract

The utility model discloses a buffer radiating plate and a battery module. The buffer heat dissipation plate comprises a first side plate, a second side plate and a buffer assembly. The first side plate and the second side plate are arranged at intervals and are connected end to form a heat dissipation cavity; the buffer component is arranged in the heat dissipation cavity and comprises a first limit section, a second limit section and a buffer section, one end of the first limit section is connected with the first side plate, one end of the second limit section is connected with the second side plate, one end of the buffer section is connected with the first limit section, and the other end of the buffer section is connected with the second limit section; after the first limiting section and the second limiting section are extruded by the first side plate and the second side plate respectively, the buffer section is extruded by the first limiting section and the second limiting section to deform, and the first limiting section can be abutted with the second limiting section. Above-mentioned heat dissipation buffer board can absorb the expansion force of electric core through self deformation, and deformation volume is controllable, can avoid long-term use back clearance between the electric core too big.

Description

Buffer heat dissipation plate and battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a buffer heat dissipation plate and a battery module.

Background

At present, most of square battery modules on the market adopt a battery cell gluing stacking mode, end plates are arranged on two sides of the module, and finally, battery cells are grouped in a mode of bundling by plastic binding bands or steel belts, so that the structure is simple, but on one hand, after the battery cells are glued and stacked, the heat dissipation area of the battery cells is reduced, and the heat dissipation of the battery cells is not facilitated; on the other hand, the excessive expansion force in the charge and discharge process of the battery core can cause the phenomenon of lithium precipitation caused by excessive pressure of the battery, and even irreversible capacity loss is generated, so that the service life of the battery is greatly reduced.

Based on the above-mentioned problem, at present, generally set up the cotton or the buffering splint of buffering bubble between adjacent electric core, absorb the expansion force through the flexible characteristic of the cotton or the buffering splint of buffering itself of buffering bubble to reduce the expansion force after the group, the cotton and buffering splint of buffering bubble can play the buffering effect, but can't rebound and restore to original state after long-term use, lead to the inside clearance of battery module great between the electric core, reduced the circulation life of electric core. And the battery cell is clung to the buffer foam or the buffer clamping plate in a large area, and only the side face and the bottom face of the battery cell can be used for radiating, so that the radiating efficiency is low.

Therefore, there is a need to provide a buffer heat dissipation plate and a battery module to solve the above problems.

Disclosure of Invention

According to one aspect of the utility model, the utility model provides the heat dissipation buffer plate, which can absorb the expansion force of the battery cells through self deformation, has controllable deformation amount, can avoid the problem of overlarge gaps between the battery cells after long-term use, and is internally provided with the heat dissipation cavity, thereby improving the heat dissipation efficiency of the battery cells.

To achieve the purpose, the utility model adopts the following technical scheme:

a cushioning heat dissipation plate, comprising:

the first side plate and the second side plate are arranged at intervals and are connected end to form a heat dissipation cavity;

the buffer component is arranged in the heat dissipation cavity and comprises a first limit section, a second limit section and a buffer section, one end of the first limit section is connected with the first side plate, and one end of the second limit section is connected with the second side plate; one end of the buffer section is connected with the first limit section, and the other end of the buffer section is connected with the second limit section;

after the first limiting section and the second limiting section are extruded by the first side plate and the second side plate respectively, the buffer section is extruded by the first limiting section and the second limiting section to deform, and the first limiting section can be abutted with the second limiting section.

Optionally, the buffer section is any one of a U-shape, a mouth shape and an H-shape.

Optionally, the buffer section includes a first connection section and a second connection section, the first connection section is connected with the first limiting section, the second connection section is connected with the second limiting section, the first connection section is perpendicular to the first limiting section, and the second connection section is perpendicular to the second limiting section.

Optionally, the first limiting section is perpendicular to the first side plate, the second limiting section is perpendicular to the second side plate, and the first limiting section and the second limiting section are oppositely arranged.

Optionally, the buffer component is provided with a plurality of buffer components, and the plurality of buffer components are arranged in the heat dissipation cavity at intervals and divide the heat dissipation cavity into a plurality of heat dissipation channels.

Optionally, the first side plate and the second side plate are connected through a transition section, and the cross section of the transition section is arc-shaped.

Optionally, the first side plate, the second side plate and the buffer assembly are of an integral structure, and optionally, the first side plate, the second side plate and the buffer assembly are of a split structure.

Optionally, the first side plate and the second side plate are manufactured by adopting aluminum profiles.

According to another aspect of the present utility model, the battery module includes a plurality of battery cells and the buffer heat dissipation plate according to any one of the above technical solutions, wherein the plurality of battery cells are stacked in sequence, and the buffer heat dissipation plate is disposed between adjacent battery cells.

The utility model has the beneficial effects that:

the utility model provides a buffer heat dissipation plate which comprises a first side plate, a second side plate and a buffer assembly, wherein the first side plate and the second side plate are arranged at intervals and are connected end to form a heat dissipation cavity. The buffer component is arranged in the heat dissipation cavity and comprises a first limiting section, a second limiting section and a buffer section. After the first limiting section and the second limiting section are extruded by the first side plate and the second side plate respectively, the buffer section is extruded by the first limiting section and the second limiting section to deform, and the first limiting section can be abutted with the second limiting section. The buffer section can deform, so that space is provided for expansion of the battery cell, and the charge and discharge of the battery cell can be reliably performed.

The first limiting section and the second limiting section can be abutted, so that the deformation of the buffer radiating plate can be controlled, on one hand, the expansion force of the battery cell in the charge and discharge process can be limited, the phenomenon of lithium precipitation caused by overlarge expansion force of the battery cell is avoided, and the service life of the battery cell is prolonged; on the other hand, even if the buffer section can not rebound and recover after long-term use, the first side plate and the second side plate can not be close to each other so that the gap between adjacent battery cells is overlarge, the structural compactness of the battery module can be effectively ensured, and the cycle service life of the battery cells is prolonged.

Through setting up the heat dissipation chamber, give the heat transfer of electric core can distribute rapidly through the heat dissipation chamber after for first curb plate and second curb plate, increased the radiating area of electric core, and then improved the radiating efficiency of electric core.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of a buffer heat dissipation plate according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of a heat sink plate according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of another heat sink buffer provided by an embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion of yet another heat sink buffer provided by an embodiment of the present utility model;

fig. 5 is a schematic structural view of a battery module according to an embodiment of the present utility model;

fig. 6 is a partial enlarged view of fig. 5 at a.

In the figure:

100. buffer cooling plate; 110. a first side plate; 120. a second side plate; 130. a heat dissipation cavity; 131. a heat dissipation channel; 140. a buffer assembly; 141. a first limit section; 142. the second limiting section; 143. a buffer section; 1431. a first connection section; 1432. a second connection section; 150. a transition section; 200. and a battery cell.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The utility model provides a heat dissipation buffer plate, which can absorb the expansion force of a battery cell 200 through self deformation, has controllable deformation quantity, can avoid the problem of overlarge gaps between the battery cells 200 after long-term use, and is internally provided with a heat dissipation cavity 130, thereby improving the heat dissipation efficiency of the battery cells 200.

The above-mentioned buffer heat dissipation plate 100 is disposed between two adjacent cells 200, and is used for absorbing expansion force of the cells 200 and dissipating heat of the cells 200, specifically, as shown in fig. 1-4, the buffer heat dissipation plate 100 includes a first side plate 110, a second side plate 120, and a buffer assembly 140, where the first side plate 110 and the second side plate 120 are disposed at intervals, and a distance between the first side plate 110 and the second side plate 120 is the thickness of the above-mentioned buffer heat dissipation plate 100. The first side plate 110 and the second side plate 120 are connected end to form the heat dissipation cavity 130, and after heat generated by the battery cell 200 is transferred to the first side plate 110 and the second side plate 120, the heat can be timely dissipated through the heat dissipation cavity 130, so that the heat dissipation efficiency of the battery cell 200 is improved, and the service life of the battery cell 200 is further prolonged. The buffer assembly 140 is disposed in the heat dissipation chamber 130 for absorbing the expansion force generated by the battery cell 200. The buffer assembly 140 includes a first limiting section 141, a second limiting section 142, and a buffer section 143, wherein one end of the first limiting section 141 is connected to the first side plate 110, one end of the second limiting section 142 is connected to the second side plate 120, the buffer section 143 is disposed between the first limiting section 141 and the second limiting section 142, specifically, one end of the buffer section 143 is connected to the first limiting section 141, and the other end is connected to the second limiting section 142. The buffer section 143 plays a role in buffering, when the first limiting section 141 and the second limiting section 142 are respectively extruded by the first side plate 110 and the second side plate 120, the buffer section 143 is extruded by the first limiting section 141 and the second limiting section 142 to generate deformation, so that the first side plate 110 and the second side plate 120 are close to each other, a space is provided for expansion of the battery cell 200, and reliable charge and discharge of the battery cell 200 can be ensured. When the buffer section 143 is deformed to a certain extent, the first limiting section 141 is abutted against the second limiting section 142, and at this time, the first side plate 110 and the second side plate 120 cannot be continuously close to each other, so that on one hand, the expansion force of the battery cell 200 in the charge and discharge process can be limited, the phenomenon of lithium precipitation caused by overlarge expansion force of the battery cell 200 is avoided, and the service life of the battery cell 200 is prolonged; on the other hand, even if the buffer section 143 cannot rebound and recover after long-term use, the first side plate 110 and the second side plate 120 are not close to each other, so that the gap between the adjacent battery cells 200 is too large, the structural compactness of the battery module can be effectively ensured, and the cycle service life of the battery cells 200 is prolonged.

Further, with continued reference to fig. 1, the buffer assembly 140 is provided in plurality, and the buffer assemblies 140 are disposed in the heat dissipation chamber 130 at intervals and divide the heat dissipation chamber 130 into a plurality of heat dissipation channels 131. Through setting up a plurality of buffer assembly 140 for the deformation of above-mentioned buffer cooling plate 100 is comparatively all, has improved the structural stability of above-mentioned buffer cooling plate 100. When cold air is blown into the heat dissipation channels 131 to exchange heat with the battery cell 200, the plurality of heat dissipation channels 131 are arranged to accelerate the flow speed of air, so that the heat exchange efficiency is higher, and the heat exchange efficiency of the battery cell 200 is improved.

Further, with continued reference to fig. 2, the first limiting section 141 is perpendicular to the first side plate 110, the second limiting section 142 is perpendicular to the second side plate 120, and the first limiting section 141 is disposed opposite to the second limiting section 142. Since the direction of the extrusion force of the battery cell 200 received by the first side plate 110 and the second side plate 120 is the same as the extending direction of the buffer section 143, the structure can directly transmit the extrusion force of the battery cell 200 to the buffer section 143, so that the response speed of the buffer section 143 is improved, the deformation of the buffer section 143 can be more matched with the expansion force of the battery cell 200, and the reliability of the charge and discharge operation of the battery cell 200 is improved.

Further, with continued reference to fig. 2, the first side plate 110 and the second side plate 120 are connected by a transition section 150, the cross section of the transition section 150 being circular arc shaped. By setting the cross section of the transition section 150 to be circular arc, on one hand, compared with the transition section 150 being perpendicular to the first side plate 110 and the second side plate 120 respectively, the circular arc transition section 150 is easier to deform, and the reliability of the buffer heat dissipation plate 100 for absorbing the expansion force of the battery cell 200 is improved; on the other hand, the installation between the above-described buffer heat sink 100 and other components is facilitated.

Further, with continued reference to fig. 2-4, the buffer section 143 includes a first connecting section 1431 and a second connecting section 1432, the first connecting section 1431 is connected to the first limiting section 141, the second connecting section 1432 is connected to the second limiting section 142, and the first connecting section 1431 is perpendicular to the first limiting section 141, and the second connecting section 1432 is perpendicular to the second limiting section 142. By arranging the first connecting section 1431 perpendicular to the first limiting section 141 and the second connecting section 1432 perpendicular to the second limiting section 142, on one hand, the deformation speed of the buffer section 143 can be slowed down, and the effect of the buffer section 143 for absorbing the expansion force of the battery cell 200 is improved; on the other hand, the processing is convenient.

Alternatively, as shown in FIG. 2, in one embodiment, the buffer section 143 is U-shaped. In another embodiment, as shown in FIG. 3, the buffer segment 143 is a mouth-shape. In other embodiments, as shown in FIG. 4, the buffer section 143 is H-shaped. Of course, the shape of the buffer section 143 may be other, and may be set according to actual needs.

Alternatively, in one embodiment, the first side plate 110, the second side plate 120, and the buffer assembly 140 are integrally formed, that is, the buffer heat dissipation plate 100 may be integrally formed by injection molding, or welded, or adhered as an integral unit. In other embodiments, the first side plate 110, the second side plate 120 and the buffer assembly 140 are of a split structure, that is, the buffer assembly 140 can be clamped between the first side plate 110 and the second side plate 120, for example, a clamping groove is formed in the first side plate 110 and the second side plate 120, and clamping protrusions are arranged at two ends of the buffer assembly 140 to enable the clamping protrusions to be clamped with the clamping grooves, or the buffer assembly 140 is in interference fit with the first side plate 110 and the second side plate 120, and the buffer assembly is arranged according to actual needs.

Further, in the present embodiment, the above-mentioned heat dissipation damper 100 is manufactured using an aluminum profile. The aluminum profile has small metal density and light weight, and the weight of the aluminum profile can be ignored, so that the weight of the battery module can be reduced; compared with other metal materials, the aluminum profile has strong plasticity and is convenient for production and processing; the aluminum profile has good heat conduction performance and is beneficial to heat dissipation of the battery cell 200.

The utility model also provides a battery module, as shown in fig. 5 and 6, comprising a plurality of electric cores 200 and the buffer heat dissipation plate 100, wherein the electric cores 200 are stacked in sequence, and the buffer heat dissipation plate 100 is arranged between the adjacent electric cores 200. The battery module has higher working reliability and longer service life.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Buffering heating panel, its characterized in that includes:

the first side plate (110) and the second side plate (120) are arranged at intervals, and the first side plate (110) and the second side plate (120) are connected end to form a heat dissipation cavity (130);

the buffer assembly (140) is arranged in the heat dissipation cavity (130), the buffer assembly (140) comprises a first limit section (141), a second limit section (142) and a buffer section (143), one end of the first limit section (141) is connected with the first side plate (110), and one end of the second limit section (142) is connected with the second side plate (120); one end of the buffer section (143) is connected with the first limit section (141), and the other end of the buffer section is connected with the second limit section (142);

when the first limiting section (141) and the second limiting section (142) are respectively extruded by the first side plate (110) and the second side plate (120), the buffer section (143) is extruded by the first limiting section (141) and the second limiting section (142) to generate deformation, and the first limiting section (141) can be abutted with the second limiting section (142).

2. The cushioning and heat-dissipating plate according to claim 1, wherein the cushioning section (143) is any one of a U-shape, a mouth-shape, and an H-shape.

3. The cushioned heat sink according to claim 1, wherein the cushion section (143) includes a first connecting section (1431) and a second connecting section (1432), the first connecting section (1431) is connected to the first limiting section (141), the second connecting section (1432) is connected to the second limiting section (142), and the first connecting section (1431) is perpendicular to the first limiting section (141), and the second connecting section (1432) is perpendicular to the second limiting section (142).

4. The cushioned heat sink according to claim 1, wherein the first limit section (141) is perpendicular to the first side plate (110), the second limit section (142) is perpendicular to the second side plate (120), and the first limit section (141) is disposed opposite to the second limit section (142).

5. The heat sink according to claim 1, wherein a plurality of the buffer members (140) are provided, and the plurality of buffer members (140) are disposed in the heat dissipation chamber (130) at intervals and divide the heat dissipation chamber (130) into a plurality of heat dissipation channels (131).

6. The cushioned heat sink according to claim 1, wherein the first side plate (110) and the second side plate (120) are connected by a transition section (150), and a cross section of the transition section (150) is circular arc-shaped.

7. The cushioned heat sink according to any one of claims 1 to 6, wherein the first side plate (110), the second side plate (120), and the cushion member (140) are of a unitary structure.

8. The cushioned heat sink according to any one of claims 1 to 6, wherein the first side plate (110), the second side plate (120), and the cushion member (140) are of a split structure.

9. The cushioned heat sink according to any one of claims 1 to 6, wherein the first side plate (110) and the second side plate (120) are manufactured using an aluminum profile.

10. The battery module is characterized by comprising a plurality of electric cores (200) and the buffer heat dissipation plate (100) according to any one of claims 1-9, wherein the electric cores (200) are sequentially stacked, and the buffer heat dissipation plate is arranged between the adjacent electric cores (200).

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