Battery shell

Abstract

The utility model discloses a battery shell which comprises a shell connected with a heat dissipation part, the heat dissipation part comprises a heat conduction piece arranged in the shell, at least one end of the heat conduction piece is connected with a heat conduction rod, a main body of the heat conduction rod is located in the shell, at least one end of the heat conduction rod penetrates through the shell and extends out of the shell, a heat dissipation plate is arranged outside the shell, and the heat dissipation plate is connected with the heat conduction piece. The partition plates are arranged between the battery cells of the battery, the heat-conducting fins are arranged on the two sides of the partition plates, the heat-conducting fins are connected with the heat-conducting rods, meanwhile, the heat dissipation plate is arranged outside the battery, and the heat-conducting rods are connected with the heat dissipation plate; furthermore, a heat transfer path from the battery cell to the heat dissipation plate through the heat conduction sheet and the heat conduction rod can be formed, heat generated by the battery cell can be effectively transferred to the heat dissipation plate for rapid heat dissipation, and the heat dissipation effect in the battery cell is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and specifically relates to a battery housing. Background Art

[0002] Solid-state batteries use solid electrolytes to replace the liquid electrolytes in traditional lithium-ion batteries, bringing higher energy density, longer cycle life, and better safety. However, such batteries still generate heat during operation. If the heat dissipation measures are insufficient, the internal temperature of the battery may rise, which will not only damage the battery performance and shorten its service life, but also may pose a safety hazard. Therefore, in the design of solid-state batteries, an effective heat dissipation mechanism is a crucial link.

[0003] Regarding the heat dissipation problem of solid-state batteries, traditional solutions often rely on means such as adding heat sinks outside the battery, applying heat pipe technology, or liquid cooling systems. Although these methods can improve the heat dissipation efficiency to a certain extent, due to the heat insulation characteristics of the solid-state battery housing, the speed of heat transfer from the inside to the outside is limited, thus reducing the heat dissipation efficiency. In addition, the outside of the solid-state battery usually lacks a protective structure and lacks sufficient buffer protection when being hit, which increases the risk of battery explosion. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a battery housing to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A battery housing includes a housing, and a heat dissipation part is connected to the housing; the heat dissipation part includes a heat conduction sheet arranged inside the housing, at least one end of the heat conduction sheet is connected with a heat conduction rod, the main body of the heat conduction rod is located inside the housing, at least one end of the heat conduction rod passes through the housing and extends to the outside of the housing, and a heat dissipation plate is arranged outside the housing and is connected with the heat conduction rod.

[0007] By arranging the heat conduction sheet inside the housing, the heat conduction sheet transfers heat to the heat dissipation plate outside the housing through the heat conduction rod, and then the heat generated inside the battery can be dissipated through the heat dissipation plate, ensuring the heat dissipation ability inside the battery and avoiding the problem of overheating inside the battery during operation.

[0008] As a further scheme of the utility model: the housing is of a rectangular frame structure, and a top cover and a bottom plate are respectively detachably connected to the upper and lower ends of the housing.

[0009] By arranging the top cover and the bottom plate, it is convenient to install devices such as the battery cell and the heat conduction sheet into the housing.

[0010] As a further solution of the present utility model: The heat conduction rod includes an upper heat conduction rod located below the top cover and a lower heat conduction rod located above the bottom plate. Both ends of the upper heat conduction rod and the lower heat conduction rod pass through the side wall of the housing. The side wall of the housing is provided with an upper installation groove and a lower installation groove for avoiding the upper heat conduction rod and the lower heat conduction rod. Heat dissipation plates are connected to both ends of the upper heat conduction rod and the lower heat conduction rod.

[0011] By arranging heat conduction rods at both the upper and lower parts of the battery cell and heat dissipation plates at both ends of the heat conduction rods, the heat dissipation channels are increased and the heat dissipation capacity is improved.

[0012] As a further solution of the present utility model: Both ends of the heat conduction sheet are fixedly connected to the upper heat conduction rod and the lower heat conduction rod respectively, and there are multiple upper heat conduction rods, lower heat conduction rods and heat conduction sheets.

[0013] By arranging multiple heat conduction sheets, the heat dissipation performance inside the battery is increased.

[0014] As a further solution of the present utility model: A partition is fixedly connected between the upper heat conduction rod and the lower heat conduction rod, and heat conduction sheets are fixedly connected to both sides of the partition.

[0015] By arranging a partition between the heat conduction rods, the partition is arranged between adjacent battery cells, and heat conduction sheets are connected to both sides of the partition. That is, heat conduction sheets are arranged on both sides of each battery cell, greatly increasing the heat dissipation capacity of the battery.

[0016] As a further solution of the present utility model: Electrode connection components are arranged on both sides of the upper heat conduction rod. The electrode connection component includes a connecting plate. Both ends of the connecting plate are fixedly connected to the upper heat conduction rods on both sides thereof. The connecting plate is made of an insulating material. An elastic plate is fixedly connected to the bottom end of the connecting plate. The elastic plate is of an arc-shaped structure and is made of a conductive material. A connecting column is fixedly installed at the top end of the connecting plate, and the connecting column is electrically connected to the elastic plate.

[0017] After the solid-state battery is assembled, the elastic plate presses on the electrode of the battery cell, and the connecting column penetrates through the top cover, so that the connecting column is directly electrically connected to the electrode of the battery cell.

[0018] As a further solution of the present utility model: The upper part of the heat dissipation plate is provided with an upper bending part, and the lower part of the heat dissipation plate is provided with a lower bending part. The heat dissipation plate is fixedly connected to the bottom plate and the top cover through the lower bending part and the upper bending part.

[0019] The upper and lower ends of the heat dissipation plate are bent and connected to the housing through the bending parts, so that a certain distance is maintained between the heat dissipation plate and the housing, and heat dissipation can be carried out on both sides of the heat dissipation plate.

[0020] As a further solution of the present utility model: limiting seats are provided on both the lower bending part and the upper bending part, clamping seats cooperating with the limiting seats are provided on both the top cover and the bottom plate, and the limiting seats are clamped with the clamping seats.

[0021] The heat dissipation plate can be quickly installed through the limiting seats and the clamping seats.

[0022] As a further solution of the present utility model: at least one rectangular through groove is formed in the heat dissipation plate.

[0023] By providing the rectangular through groove, a connected space can be formed on both sides of the heat dissipation plate, so that natural air cooling can be carried out, or it can be combined with forced air cooling to increase the heat dissipation effect of the heat dissipation plate.

[0024] As a further solution of the present utility model: a heat conduction cover is provided on one side of the heat dissipation plate close to the housing, the width of the heat conduction cover gradually increases from one end away from the heat dissipation plate to the end close to the heat dissipation plate, a buffer spring is provided between the heat conduction cover and the heat dissipation plate, and the buffer spring is arranged along the direction perpendicular to the heat dissipation plate.

[0025] The provision of the heat conduction cover allows air flow to pass through the internal heat dissipation channel, thereby improving the heat dissipation effect of the heat conduction sheet. At the same time, the buffer spring not only provides a buffering effect when the battery is impacted, but also further promotes heat dissipation by increasing the contact area with the air.

[0026] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0027] 1. In this application, a partition is provided between the battery cells, heat conduction sheets are arranged on both sides of the partition, the heat conduction sheets are connected with heat conduction rods, and at the same time, a heat dissipation plate is provided outside the battery, and the heat conduction rods are connected with the heat dissipation plate. Thus, a heat transfer path from the battery cells through the heat conduction sheets and heat conduction rods to the heat dissipation plate can be formed, and the heat generated by the battery cells can be effectively transferred to the heat dissipation plate and quickly dissipated, greatly improving the heat dissipation effect inside the battery cells;

[0028] 2. The heat dissipation plate of this application keeps a certain distance from the battery housing, which can increase ventilation and heat dissipation, further improving the heat dissipation efficiency. At the same time, a heat conduction cover and a spring are arranged on the inner wall of the heat dissipation plate, which not only provide a buffering effect when the battery is impacted, but also further promote heat dissipation by increasing the contact area with the air;

[0029] 3. By providing the partition, heat conduction rods and heat dissipation plate, this application also enhances the structural strength of the solid-state battery and improves its impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0031] Figure 2 For the present utility model Figure 1 The enlarged schematic view of part A;

[0032] Figure 3 The exploded structure schematic view of the present utility model;

[0033] Figure 4 The structure schematic view of the partition board and the electrode connection component of the present utility model;

[0034] Figure 5 The structure schematic view of the electrode connection component of the present utility model;

[0035] Figure 6 The structure schematic view of the housing of the present utility model;

[0036] Figure 7 The front view structure schematic view of the heat dissipation plate, the heat conduction cover and the buffer spring of the present utility model.

[0037] In the figure: 1 - housing, 101 - upper mounting groove, 102 - lower mounting groove, 2 - top cover, 3 - bottom plate, 4 - heat dissipation plate, 401 - rectangular through groove, 402 - upper bending part, 403 - lower bending part, 5 - limit seat, 6 - card seat, 7 - lower heat conduction rod, 8 - upper heat conduction rod, 9 - partition board, 10 - heat conduction sheet, 11 - motor connection component, 1101 - connecting plate, 1102 - elastic plate, 1103 - connecting column, 12 - heat conduction cover, 13 - buffer spring. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0039] Please refer to Figure 1, in the embodiment of the present utility model, a battery housing includes a housing 1, the housing 1 is a rectangular frame structure, the upper and lower ends of the housing 1 are detachably connected with a top cover 2 and a bottom plate 3 respectively, and the housing 1 is connected with a heat dissipation part; the heat dissipation part includes a heat conducting sheet 10 arranged in the housing 1, at least one end of the heat conducting sheet 10 is connected with a heat conducting rod, the main body of the heat conducting rod is located in the housing 1, at least one end of the heat conducting rod passes through the housing 1 and extends to the outside of the housing 1, and a heat dissipation plate 4 is arranged outside the housing 1, and the heat dissipation plate 4 is connected with the heat conducting rod. By arranging the heat conducting sheet 10 in the housing 1, the heat conducting sheet 10 transfers heat to the heat dissipation plate 4 outside the housing through the heat conducting rod, and further, the heat generated inside the battery can be dissipated through the heat dissipation plate 4, ensuring the heat dissipation capacity inside the battery and avoiding the problem of overheating inside the battery during operation.

[0040] As Figure 3 , Figure 4 , Figure 6 shown, the heat conducting rod includes an upper heat conducting rod 8 located below the top cover 2 and a lower heat conducting rod 7 located above the bottom plate 3. Both ends of the upper heat conducting rod 8 and the lower heat conducting rod 7 pass through the side wall of the housing 1, and the side wall of the housing 1 is provided with an upper installation groove 101 and a lower installation groove 102 for avoiding the upper heat conducting rod 8 and the lower heat conducting rod 7. Both ends of the upper heat conducting rod 8 and the lower heat conducting rod 7 are connected with the heat dissipation plate 4. By arranging heat conducting rods at both the upper and lower parts of the battery cell and arranging heat dissipation plates at both ends of the heat conducting rods, the heat dissipation channels are increased and the heat dissipation capacity is improved.

[0041] A partition plate 9 is fixedly connected between the upper heat conducting rod 8 and the lower heat conducting rod 7. Heat conducting sheets 10 are fixedly connected to both sides of the partition plate 9. There are multiple upper heat conducting rods 8, lower heat conducting rods 7 and partition plates 9. The heat conducting sheets 10, heat conducting rods and heat dissipation plates 4 are all made of materials with high heat conductivity, such as copper. By arranging the partition plate 9 between the heat conducting rods, the partition plate 9 is arranged between adjacent battery cells, and heat conducting sheets 10 are connected to both sides of the partition plate 9, that is, heat conducting sheets 10 are arranged on both sides of each battery cell, greatly increasing the heat dissipation capacity of the battery.

[0042] As Figure 5 shown, electrode connection assemblies 11 are arranged on both sides of the upper heat conducting rod 8. The electrode connection assembly 11 includes a connecting plate 1101. Both ends of the connecting plate 1101 are fixedly connected with the upper heat conducting rods 8 on both sides thereof. The connecting plate 1101 is made of an insulating material. The bottom end of the connecting plate 1101 is fixedly connected with an elastic plate 1102. The elastic plate 1102 is an arc-shaped structure and is made of a conductive material. The top end of the connecting plate 1101 is fixedly installed with a connecting column 1103. The connecting column 1103 is electrically connected with the elastic plate 1102. After the solid-state battery is assembled, the elastic plate 1102 presses on the electrode of the battery cell, and the connecting column 1103 penetrates through the top cover 2, so that the connecting column 1103 is directly electrically connected with the electrode of the battery cell.

[0043] As Figure 2 , Figure 3 shown, the upper part of the heat dissipation plate 4 is provided with an upper bending part 402, and the lower part of the heat dissipation plate 4 is provided with a lower bending part 403. The heat dissipation plate 4 is fixedly connected to the bottom plate 3 and the top cover 2 through the lower bending part 403 and the upper bending part 402. In this embodiment, both the upper bending part 402 and the lower bending part 403 are perpendicular to the heat dissipation plate 4. The top wall of the upper bending part 402 is attached to the bottom wall of the upper heat conduction rod 8, and the top wall of the lower bending part 403 is attached to the bottom wall of the lower heat conduction rod 7, so as to increase the contact area between the heat dissipation plate 4 and the two heat conduction rods and improve the heat conduction efficiency; two limiting seats 5 are fixedly installed at the top end of the heat dissipation plate 4, and clamping seats 6 for fixing the heat dissipation plate 4 are fixedly installed on both sides of the top cover 2. The clamping seat 6 is arranged in an L-shaped structure.

[0044] At least one rectangular through groove 401 is formed in the heat dissipation plate 4. By providing the rectangular through groove 401, a connected space can be formed on both sides of the heat dissipation plate 4, and then natural air cooling can be carried out, or it can be combined with forced air cooling to increase the heat dissipation effect of the heat dissipation plate 4.

[0045] As Figure 7 shown, a heat conduction cover 12 is provided on the side of the heat dissipation plate 4 close to the housing 1. The width of the heat conduction cover 12 gradually increases from the end far away from the heat dissipation plate 4 to the end close to the heat dissipation plate 4. A buffer spring 13 is arranged between the heat conduction cover 12 and the heat dissipation plate 4, and the buffer spring 13 is arranged along the direction perpendicular to the heat dissipation plate 4. The setting of the heat conduction cover 12 allows air flow to pass through the internal heat dissipation channel, thereby improving the heat dissipation effect of the heat conduction fin 10. At the same time, the buffer spring 13 not only provides a buffering effect when the battery is impacted, but also further promotes heat dissipation by increasing the contact area with air.

[0046] In addition, the battery housing of the present application can be used not only for solid-state batteries, but also for other batteries, especially square batteries. For cylindrical batteries, it can also be adapted by changing the shapes of the partition plate and the heat conduction fin. That is, for different types and shapes of batteries, only the partition plate and the heat conduction plate with corresponding structures are needed. The heat conduction rods arranged at both ends of the battery and the external heat dissipation plate can improve the heat dissipation performance of the battery and also provide higher anti-impact performance.

[0047] When the utility model is in use, the battery cells are arranged between the partition plates 9. The heat generated when the battery cells work is first transmitted to the heat conduction fins 10 on both sides, then transmitted to the heat conduction rods through the heat conduction fins 10, and then transmitted to the heat dissipation plate 4 at both ends through the heat conduction rods. Finally, heat dissipation is carried out through the heat dissipation plate 4, so as to improve the heat dissipation capacity of the battery cells inside the battery and increase the heat dissipation effect.

[0048] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0049] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A battery housing, comprising a housing (1), characterized in that, The housing (1) is connected with a heat dissipation part; The heat dissipation part includes a heat conducting sheet (10) disposed in the housing (1). At least one end of the heat conducting sheet (10) is connected with a heat conducting rod. The main body of the heat conducting rod is located in the housing (1). At least one end of the heat conducting rod passes through the housing (1) and extends to the outside of the housing (1). A heat dissipation plate (4) is disposed outside the housing (1), and the heat dissipation plate (4) is connected with the heat conducting rod.

2. A battery housing according to claim 1, characterized in that, The housing (1) is of a rectangular frame structure, and a top cover (2) and a bottom plate (3) are detachably connected to the upper and lower ends of the housing (1) respectively.

3. A battery housing according to claim 2, characterized in that, The heat conducting rod includes an upper heat conducting rod (8) located below the top cover (2) and a lower heat conducting rod (7) located above the bottom plate (3). Both ends of the upper heat conducting rod (8) and the lower heat conducting rod (7) pass through the side wall of the housing (1). Upper mounting grooves (101) and lower mounting grooves (102) for avoiding the upper heat conducting rod (8) and the lower heat conducting rod (7) are provided on the side wall of the housing (1). Both ends of the upper heat conducting rod (8) and the lower heat conducting rod (7) are connected with the heat dissipation plate (4).

4. A battery housing according to claim 3, characterized in that, Both ends of the heat conducting sheet (10) are fixedly connected with the upper heat conducting rod (8) and the lower heat conducting rod (7) respectively, and there are multiple upper heat conducting rods (8), lower heat conducting rods (7) and heat conducting sheets (10).

5. A battery housing according to claim 4, characterized in that, A partition plate (9) is fixedly connected between the upper heat conducting rod (8) and the lower heat conducting rod (7), and heat conducting sheets (10) are fixedly connected to both sides of the partition plate (9).

6. A battery housing according to claim 3, wherein, Electrode connection assemblies (11) are arranged on both sides of the upper heat conducting rod (8). The electrode connection assembly (11) includes a connecting plate (1101). Both ends of the connecting plate (1101) are fixedly connected with the upper heat conducting rods (8) on both sides thereof. The connecting plate (1101) is made of an insulating material. An elastic plate (1102) is fixedly connected to the bottom end of the connecting plate (1101). The elastic plate (1102) is of an arc structure and is made of a conductive material. A connecting column (1103) is fixedly installed at the top end of the connecting plate (1101), and the connecting column (1103) is electrically connected with the elastic plate (1102).

7. A battery housing according to claim 2, characterized in that, An upper bending part (402) is provided on the upper part of the heat dissipation plate (4), and a lower bending part (403) is provided on the lower part of the heat dissipation plate (4). The heat dissipation plate (4) is fixedly connected with the bottom plate (3) and the top cover (2) through the lower bending part (403) and the upper bending part (402).

8. A battery housing according to claim 7, wherein, Limit seats (5) are provided on both the lower bending part (403) and the upper bending part (402). Clamping seats (6) matched with the limit seats (5) are provided on both the top cover (2) and the bottom plate (3), and the limit seats (5) are clamped with the clamping seats (6).

9. A battery housing according to claim 1, wherein, At least one rectangular through groove (401) is formed in the heat dissipation plate (4).

10. A battery housing according to claim 1, characterized in that, One side of the heat dissipation plate (4) close to the housing (1) is provided with a heat conduction cover (12). The width of the heat conduction cover (12) gradually increases from the end far away from the heat dissipation plate (4) to the end close to the heat dissipation plate (4). A buffer spring (13) is arranged between the heat conduction cover (12) and the heat dissipation plate (4), and the buffer spring (13) is arranged along the direction perpendicular to the heat dissipation plate (4).

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