Water cooling plate for increasing battery cell installation space

Abstract

The utility model relates to a water-cooling plate for increasing the mounting space of a battery cell, which comprises a water-cooling plate, the edge of the water-cooling plate is provided with an edge covering structure, and the edge covering structure is used for protecting the edge of the battery cell. The edge of the water-cooling plate is provided with the edge covering structure to protect the edge of the battery cell, so that the protection effect on the battery cell can be improved for the battery pack without a bottom protection plate; as for the battery pack needing to protect the peripheries of the battery cells, a bottom protection plate is omitted, space is vacated for adding the battery cells, and the space for installing the batteries can be increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of batteries, in particular to a water cooling plate for increasing the installation space of a battery cell. BACKGROUND

[0002] With the gradual improvement of consumers' environmental awareness and the increasingly stringent domestic environmental standards, new energy vehicles have become the background of future development trends, and this field has become the main battlefield of competition between traditional car companies and new forces in the car industry. However, with the technological breakthroughs and development of the new energy industry, consumers' requirements for new energy vehicles are not limited to meeting basic travel needs and reducing use costs. The safety and reliability of vehicles and the purchase cost of vehicles have also begun to increase. As an essential part of new energy vehicles, the battery pack is one of the safety and reliability components that consumers are most concerned about, and it also accounts for a large proportion of the cost of new energy vehicles. Therefore, it meets the needs of customers in the new energy industry.

[0003] In the prior art, a battery pack is usually composed of a battery cell for storing and releasing electric energy and a cooling plate for discharging heat from the battery cell. The cooling plate includes an upper cooling plate and a lower cooling plate. A groove is formed on the lower cooling plate, and a cooling liquid flow channel is formed between the inner wall of the groove and the bottom wall of the upper cooling plate. In order to limit the position between the cooling plate and the battery cell and prevent relative displacement, a bottom guard plate is often provided at the bottom and periphery of the cooling plate to protect it, which occupies space in the battery pack. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the technical problem of occupying space in the battery pack caused by the additional setting of the bottom guard plate in the prior art, the present application provides a water cooling plate for increasing the installation space of a battery cell.

[0005] The water cooling plate for increasing the installation space of a battery cell provided by the present application adopts the following technical solution:

[0006] A water cooling plate for increasing the installation space of a battery cell includes a water cooling plate, and a wrapping structure is provided at the edge of the water cooling plate. The wrapping structure is used to protect the edge of the battery cell.

[0007] By adopting the above technical solution, the wrapping structure is provided at the edge of the water cooling plate to protect the edge of the battery cell. For a battery pack without a bottom guard plate, such a setting can improve the protection effect of the battery cell. For a battery pack that needs to protect the periphery of the battery cell, such a setting eliminates the need for a bottom guard plate, thereby providing space for additional battery cells and increasing the installation space of the battery.

[0008] Optionally, the water cooling plate includes an upper cooling plate and a lower cooling plate, the wrapping structure is provided at the edge of the upper cooling plate, and the wrapping structure includes two side wrapping structures and a rear wrapping structure.

[0009] By adopting the technical scheme, if the edge covering structure is installed on the lower cold plate, the edge covering structure needs to extend and wrap the upper cold plate, and then can continue to extend and contact the battery cell, which causes additional cost. The edge covering structure is arranged at the edge of the upper cold plate, and the manufacturing material and cost can be relatively reduced. The three-side edge covering can effectively protect the edge of the battery cell without affecting the setting of the water inlet and outlet on the front side of the water cooling plate.

[0010] Optionally, the edge covering structures form clamping cavities for clamping the battery cell, and the edge covering structures are arranged in a tilted manner away from the clamping cavities.

[0011] By adopting the technical scheme, the edge covering structure arranged in a tilted manner plays a certain guiding role, and facilitates the placement of the battery cell into the clamping cavity.

[0012] Optionally, the edge covering structure is formed at the edge position of the upper cold plate through a stamping process.

[0013] By adopting the technical scheme, the stamping process is convenient and cost-saving, and is beneficial to improving the production efficiency.

[0014] Optionally, a protrusion is formed on the upper cold plate, and an avoiding hole for inserting the protrusion is arranged on the lower cold plate.

[0015] By adopting the technical scheme, the protrusion is inserted into the avoiding hole, so that a limiting structure can be formed between the upper cold plate and the lower cold plate to limit the relative movement of the upper cold plate and the lower cold plate, and the structural strength of the combination of the two is improved.

[0016] Optionally, a groove for filling a heat-conducting substance is arranged on the protrusion.

[0017] By adopting the technical scheme, the groove plays a role of giving way, so that the battery cell can be stably placed on the water cooling plate without being lifted by the heat-conducting substance. The battery cell is heat-conducted through the heat-conducting substance, which is helpful for heat dissipation, avoids the influence of energy consumption caused by the difficulty of heat dissipation due to the increase of the battery cell as much as possible, and prolongs the service life of the battery cell.

[0018] Optionally, the number of the grooves is multiple, and the multiple grooves are distributed between flow channels formed between the upper cold plate and the lower cold plate.

[0019] By adopting the technical scheme, multiple grooves are arranged, the temperature uniformity of the battery cell is improved, and the heat dissipation effect is enhanced.

[0020] Optionally, the protrusion and the groove are simultaneously formed on the upper cold plate through a stamping process.

[0021] By adopting the technical scheme, the stamping process is convenient and cost-saving, and is beneficial to improving the production efficiency.

[0022] Optionally, the edge covering structure is provided with a fixing edge, and the fixing edge is provided with a fixing hole for fixing the water-cooling plate.

[0023] By using the fixing hole, the water-cooling plate can be conveniently fixed.

[0024] Optionally, the lower cooling plate is provided with a plurality of supporting blocks for supporting the water-cooling plate.

[0025] When the lower cooling plate is installed in the vehicle body, the supporting blocks are in contact between the lower cooling plate and the vehicle body, and the supporting blocks support the water-cooling plate, so that the flow channel is prevented from being deformed to affect the heat dissipation effect.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The protection effect of the battery cell is improved, the bottom guard plate is omitted, the space for adding the battery cell is provided, and the battery capacity is increased.

[0028] 2. The relative movement of the upper cooling plate and the lower cooling plate is limited, and the structural strength of the combination of the two is improved.

[0029] 3. The temperature uniformity of the battery cell is improved, heat dissipation is facilitated, heat dissipation difficulty caused by the increase of the battery cell is avoided as much as possible, the energy consumption is affected, and the service life of the battery cell is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is an explosion structure schematic view of the present application.

[0031] Figure 2 is a structure schematic view of the upper cooling plate in the present application.

[0032] Figure 3 is a structure schematic view of the lower cooling plate in the present application.

[0033] Mark 1, water-cooling plate; 2, upper cooling plate; 21, edge covering structure; 211, two side edges; 212, rear side edge; 22, protrusion; 23, groove; 24, fixing edge; 241, fixing hole; 25, clamping cavity; 3, lower cooling plate; 31, strip-shaped groove; 32, avoiding hole; 33, supporting block. DETAILED DESCRIPTION

[0034] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The present application will be further described in detail.

[0035] The present application discloses a water-cooling plate for increasing the installation space of a battery cell. Figure 1It includes a water-cooled plate 1, which includes an upper cooling plate 2 and a lower cooling plate 3. The lower cooling plate 3 has multiple strip-shaped grooves 31. The inner wall of the strip-shaped grooves 31 and the bottom wall of the upper cooling plate 2 form a flow channel for the coolant to flow through.

[0036] Reference Figure 2 The upper cold plate 2 has an edge-protecting structure 21 formed by stamping along its edge. The edge-protecting structure 21 is used to protect the edge of the battery cell. Specifically, the upper cold plate 2 is a rectangular metal sheet with the longer side being the length side and the shorter side being the width side. The edge-protecting structure 21 includes two side edges 211 and a rear edge 212. There are two side edges 211, which are stamped and integrally formed on the length sides of the upper cold plate 2. The rear edge 212 is stamped and formed on the width side of the upper cold plate 2, and the end of the rear edge 212 is connected to the end of the two side edges 211 and has a rounded corner design. A clamping cavity 25 for clamping the battery cell is formed between the two side edges 211 and the rear edge 212. The edge-protecting structure 21 is inclined in a direction that is further away from the water-cooling plate 1 and further away from the clamping cavity 25, which facilitates the placement of the battery cell. In other embodiments, the edge-sealing structure 21 can be disposed on the edge of the lower cooling plate 3, or the edge-sealing structure 21 can extend in a direction perpendicular to the bottom wall of the water-cooling plate 1.

[0037] Reference Figure 1 and Figure 2 Multiple protrusions 22 and grooves 23 are formed on the upper cold plate 2 by stamping. The protrusions 22 and grooves 23 correspond one-to-one. The protrusions 22 and grooves 23 are formed on the upper cold plate 2 simultaneously with the stamping process. Multiple protrusions 22 and grooves 23 are distributed between the flow channels formed between the upper cold plate 2 and the lower cold plate 3.

[0038] Reference Figure 2 and Figure 3 The lower cold plate 3 is provided with clearance holes 32 for the insertion of protrusions 22. The shape and size of the protrusions 22 are adapted to the clearance holes 32 to play a limiting role. Specifically, there are multiple sets of protrusions 22, with multiple protrusions 22 forming a group. The distribution direction of the protrusions 22 in the same group is parallel to the length side of the upper cold plate 2, and the multiple sets of protrusions 22 are distributed and arranged along the width side of the upper cold plate 2.

[0039] Reference Figure 2 The groove 23 is filled with a thermally conductive material, which is attached to the side wall of the battery cell held in the clamping cavity 25. Specifically, the thermally conductive material can be thermally conductive adhesive.

[0040] Reference Figure 2 The edging structure 21 has an integrally formed fixed edge 24, and the fixed edge 24 has multiple fixing holes 241. The fixing holes 241 are used for inserting bolts or other connecting parts to fix the water cooling plate 1 on the vehicle body.

[0041] ReferenceFigure 1 and Figure 3 A plurality of support blocks 33 are formed on the lower cold plate 3 by stamping, and the support blocks 33 are used to support the water-cooled plate 1, disperse pressure on the flow channel, and prevent the flow channel from being deformed due to excessive pressure.

[0042] The implementation principle of the water-cooled plate for increasing the installation space of the battery cell is as follows: the battery cell is placed in the clamping cavity 25 of the upper cold plate 2, clamped and fixed by the two side edges 211 and the rear side edge 212, and then the upper cold plate 2 is placed on the lower cold plate 3, at this time, the protrusion 22 is inserted into the avoiding hole 32, and the upper cold plate 2 and the lower cold plate 3 are sealed and fixed by brazing or other processes.

[0043] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A water-cooled plate for increasing an installation space of a battery cell, characterized by: The application relates to a water-cooled plate (1) which is provided with an edge covering structure (21) at the edge of the water-cooled plate (1), the edge covering structure (21) is used for protecting the edge of an electric core, and the edge covering structure (21) comprises two side edge coverings (211) and a rear side edge covering (212).

2. The water cooling plate for increasing the installation space of a battery cell according to claim 1, characterized in that: The water-cooled plate (1) comprises an upper cooling plate (2) and a lower cooling plate (3), and the edge covering structure (21) is arranged at the edge of the upper cooling plate (2).

3. The water-cooled plate for increasing an installation space of a cell according to claim 2, characterized in that: The edge covering structure (21) forms a clamping cavity (25) for clamping an electric core in a direction away from the clamping cavity (25).

4. The water cooling plate for increasing the installation space of a battery cell according to claim 2, characterized in that: The edge covering structure (21) is formed at the edge position of the upper cooling plate (2) through a stamping process.

5. The water cooling plate for increasing the installation space of a battery cell according to claim 2, characterized in that: The upper cooling plate (2) is provided with a protrusion (22), and the lower cooling plate (3) is provided with a avoiding hole (32) for inserting the protrusion (22).

6. The water cooling plate for increasing the installation space of a battery cell according to claim 5, characterized in that: The protrusion (22) is provided with a groove (23) for filling a heat-conducting substance.

7. The water cooling plate for increasing the installation space of a battery cell according to claim 5, characterized in that: The number of the protrusions (22) is multiple, and the multiple protrusions (22) are distributed between flow channels formed between the upper cooling plate (2) and the lower cooling plate (3).

8. The water cooling plate for increasing the installation space of a battery cell according to claim 5, characterized in that: The protrusion (22) and the groove (23) are simultaneously formed on the upper cooling plate (2) through a stamping process. 9.The water cooling plate for increasing an installation space of a battery cell according to claim 1, wherein: The edge covering structure (21) is provided with a fixing edge (24), the fixing edge (24) is provided with a fixing hole (241), and the fixing hole (241) is used for fixing the water-cooled plate (1). 10.The water cooling plate for increasing an installation space of a battery cell according to claim 2, characterized in that: The lower cooling plate (3) is provided with multiple supporting blocks (33), and the supporting blocks (33) are used for supporting the water-cooled plate (1).

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