Liquid cooling plate and battery pack

Abstract

The utility model belongs to the energy storage technical field, concretely relates to a liquid cooling panel and battery pack, including frame, cold plate body and tray, the frame sets up in the cold plate body for arranging the one side edge of battery module, the tray has two or more, two or more The tray is all set up in the bottom of cold plate body, two or more The two ends of tray are fixedly connected with the edge of cold plate body and frame, and two or more The support strip is set up in the convexity of the side of the tray away from the bottom of cold plate body to the side of the tray towards the bottom of cold plate body, and the support strip is in contact with the position of the corresponding flow channel of the bottom of cold plate body, at least two sides The bottom of frame extends downward and is provided with a convex strip, and the convex strip is located on the side of the cold plate body and the tray. The utility model effectively improves the bearing capacity of the liquid cooling panel, can satisfy the support demand of larger size battery pack and guarantee the reliability of support, is favorable to lightweight design, and can improve the space utilization of energy storage cabin.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage technology, specifically relating to a liquid cooling plate and a battery pack. Background Technology

[0002] In recent years, the energy storage field has been developing rapidly. To ensure that battery packs operate within a certain temperature range, liquid cooling plates are typically installed at the bottom for cooling. In energy storage compartments, battery packs are stacked, and to improve overall capacity and ease of installation, existing technologies directly use cold plates for load-bearing. However, to meet current energy storage requirements and fully utilize limited storage space, battery packs are becoming increasingly larger, thus increasing the load on the cold plates. Commonly used 3-series aluminum stamped liquid cooling plate structures are insufficient to meet the increased load-bearing demands. If only a single bottom support plate is used, the load-bearing capacity of the liquid cooling plate is only slightly improved. Adding more or larger bottom support structures results in a large footprint at the bottom, affecting the space utilization of the energy storage compartment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a liquid cooling plate and battery pack that effectively improves the load-bearing capacity of the liquid cooling plate, can meet the support requirements of larger battery packs and ensure the reliability of the support, facilitates lightweight design, and can improve the space utilization of the energy storage compartment.

[0004] This utility model provides a liquid cooling plate, including a frame, a cooling plate body, and a support plate. The frame is disposed on the edge of the cooling plate body for arranging battery modules. There are two or more support plates, each disposed on the bottom of the cooling plate body. The two ends of the two or more support plates are fixedly connected to the edge of the cooling plate body and the frame. Support strips are provided on the two or more support plates along the side facing away from the bottom of the cooling plate body to the side facing the bottom of the cooling plate body. The support strips are in contact with the corresponding flow channels on the bottom of the cooling plate body. At least two sides of the bottom of the frame are provided with downwardly extending ridges. The ridges are located on the sides of the cooling plate body and the support plates, and the bottom of the ridges are used to contact the cluster frame of the energy storage compartment.

[0005] Furthermore, both the frame and the protruding strip are hollow structures.

[0006] Furthermore, the length direction of the support bar is set along the length direction of its corresponding flow channel.

[0007] Furthermore, a sealing strip is provided between the bottom of the frame and the side of the cold plate body used to arrange the battery module.

[0008] Furthermore, a sealing groove is provided at the bottom of the frame, and the sealing strip is disposed in the sealing groove and is attached to the side of the cold plate body used to arrange the battery module.

[0009] Furthermore, two or more of the aforementioned pallets are provided with protrusions along the side facing away from the bottom of the cold plate body to the side facing the bottom of the cold plate body, and the areas at both ends of the pallets that are fixed to the edge of the cold plate body and the frame are located on the protrusions.

[0010] Furthermore, it also includes fasteners, with fixing holes provided on the protrusion, the edge of the cold plate body, and the frame. The fasteners pass through the fixing holes on the protrusion, the edge of the cold plate body, and the frame to fix and connect the support plate, the cold plate body, and the frame.

[0011] Furthermore, at least two support bars are provided on a single pallet along the spacing direction of the flow channel.

[0012] Furthermore, the cold plate body includes a lower plate with a flow channel and an upper plate disposed on the lower plate, the frame is disposed on the edge of the upper plate, and two or more of the support plates are disposed at the bottom of the lower plate.

[0013] This utility model also provides a battery pack, including a battery module, a top cover and a liquid cooling plate as described above, wherein the battery module is disposed on the liquid cooling plate and the top cover covers the outside of the battery module and is fixed to the frame.

[0014] The beneficial effects of this utility model are that by setting a support strip protruding from the side of the support plate away from the bottom of the cold plate body to the side facing the bottom of the cold plate body, the bottom of the cold plate body and the flow channel are supported. At the same time, based on the frame setting, it forms a reinforcing structure of the cold plate body together with the support plate. The bottom of the protruding strip contacts the cluster frame of the energy storage compartment and acts as a load-bearing surface, effectively reducing the deformation of the cold plate body, improving the overall structural strength, and effectively improving the load-bearing capacity of the liquid cooling plate. It can meet the support requirements of larger battery packs and ensure the reliability of the support. Moreover, the support plate has a reinforcing rib structure and can be formed by sheet metal stamping, which is lighter and lower in cost, and is more conducive to the lightweight design of the liquid cooling plate and battery pack. In addition, the support plate and the protruding strip will not occupy too much bottom space, which helps to improve the space utilization of the energy storage compartment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the liquid cooling plate of this utility model.

[0016] Figure 2 This is a schematic diagram showing the connection method of the frame, cold plate body and pallet of this utility model.

[0017] Figure 3 This is a schematic diagram of the flow channel distribution of the lower plate of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the tray of this utility model.

[0019] Figure 5This is a schematic diagram showing the positional relationship between the support strip and the flow channel on the pallet of this utility model.

[0020] Figure 6 This is a schematic diagram of the battery module of this utility model mounted on a liquid cooling plate.

[0021] In the diagram: 1. Frame; 11. Raised bar; 12. Sealing groove; 2. Cold plate body; 21. Lower plate; 211. Flow channel; 22. Upper plate; 3. Support plate; 31. Support bar; 32. Raised block; 4. Fixing component; 100. Liquid cooling plate; 200. Battery module. Detailed Implementation

[0022] like Figures 1-6 As shown, this utility model provides a liquid cooling plate 100, including a frame 1, a cooling plate body 2, and a support plate 3. The frame 1 is disposed on the side of the cooling plate body 2 used for arranging the battery module 200, and is located at the edge of that side of the cooling plate body 2. There are two or more support plates 3, all of which are disposed at the bottom of the cooling plate body 2. The two ends of the two or more support plates 3 are located at the edge of the cooling plate body 2, and the two ends of the two or more support plates 3 are fixedly connected to the edge of the cooling plate body 2 and the frame 1, so that the frame 1, the cooling plate body 2, and the support plate 3 are fixed as a whole. The two or more support plates 3 are provided with support strips 31 protruding from the side away from the bottom of the cooling plate body 2 to the side facing the bottom of the cooling plate body 2. The support strips 31 are in contact with the position of the flow channel 211 at the bottom of the cooling plate body 2. At least two sides of the bottom of the frame 1 are provided with protruding strips 11 extending downward. The protruding strips 11 are located on the sides of the cooling plate body 2 and the support plate 3, and the bottom of the protruding strips 11 is used to contact the cluster frame of the energy storage compartment. Preferably, the bottom of the protrusion 11 is flat, which allows for a larger contact area with the cluster frame.

[0023] The liquid cooling plate 100 provided by this utility model has a support strip 31 protruding from the side of the support plate 3 away from the bottom of the cold plate body 2 to the side facing the bottom of the cold plate body 2, which supports the bottom of the cold plate body 2 and the flow channel 211. At the same time, based on the frame 1, it and the support plate 3 together form a reinforcing structure for the cold plate body 2. The bottom of the protrusion 11 contacts the cluster frame of the energy storage compartment and acts as a load-bearing surface, effectively reducing the deformation of the cold plate body 2, improving the overall structural strength, and effectively improving the load-bearing capacity of the liquid cooling plate 100. It can meet the support requirements of larger battery packs and ensure the reliability of the support. The support plate 3 has a reinforcing rib structure and can be formed by sheet metal stamping, which is lighter and lower in cost, which is more conducive to the lightweight design of the liquid cooling plate 100 and the battery pack. The support plate 3 and the protrusion 11 do not occupy too much bottom space, which helps to improve the space utilization of the energy storage compartment.

[0024] The bottom of the protruding strip 11 can be made of wear-resistant material to reduce friction with the battery pack frame and facilitate movement during battery pack installation and removal. Preferably, both the frame 1 and the protruding strip 11 are hollow structures, which can further reduce weight and facilitate the lightweight design of the liquid cooling plate 100. The protruding strip 11 is specifically located on the bottom sides of the frame 1 corresponding to both ends of the support plate 3.

[0025] In this invention, the length direction of the support bar 31 is arranged along the length direction of its corresponding flow channel 211, i.e., as shown in the figure. Figure 5 As shown, this increases the contact area with the bottom flow channel 211 of the cold plate body 2, thereby improving the support effect on the cold plate body 2. In one embodiment of this invention, a gap may be left between the top of the support strip 31 and the contact surface between the bottom of the cold plate body 2 for applying adhesive or filling with cushioning material. In another embodiment of this invention, the top of the support strip 31 and the contact surface between the bottom of the cold plate body 2 are directly abutted.

[0026] A sealing strip is provided between the bottom of the frame 1 and the side of the cold plate body 2 used for arranging the battery module 200 to increase the sealing between the frame 1 and the cold plate body 2. Based on this design, the IP protection level of the battery pack can be improved after the battery module 200 is encapsulated by the top cover. Specifically, a sealing groove 12 is provided at the bottom of the frame 1, and the sealing strip is disposed within the sealing groove 12 and abuts against the side of the cold plate body 2 used for arranging the battery module 200. The sealing groove 12 facilitates the fixing of the sealing strip and prevents displacement of the sealing strip.

[0027] Two or more of the aforementioned pallets 3 are provided with protrusions 32 along the side facing away from the bottom of the cold plate body 2 to the side facing the bottom of the cold plate body 2. The areas at both ends of the pallet 3 that are fixed to the edge of the cold plate body 2 and the frame 1 are located on the protrusions 32. Based on this arrangement, the fixing areas at both ends of the pallet 3 are closer to the bottom edge of the cold plate body 2, making it easier to fix to the cold plate body 2 and the frame 1. Furthermore, since the protrusions are provided along the side facing away from the bottom of the cold plate body 2 to the side facing the bottom of the cold plate body 2, they can be stamped on the pallet 3 without increasing the weight of the pallet 3.

[0028] This utility model also includes a fixing member 4. Fixing holes are provided on the protrusion 32, the edge of the cold plate body 2, and the frame 1. The fixing member 4 passes through the fixing holes on the protrusion 32, the edge of the cold plate body 2, and the frame 1 to fix the support plate 3, the cold plate body 2, and the frame 1. The fixing member 4 is a rivet or a bolt with a nut connected to its end.

[0029] At least two support bars 31 are provided on a single tray 3 along the spacing direction of the flow channel 211, i.e. Figure 4As shown, this can further increase the contact area with the bottom flow channel 211 of the cold plate body 2. Among them, Figure 4 To support the downward-facing view of support bar 31, during assembly, Figure 1 From a certain perspective, the support bar 31 faces the bottom of the cold plate body 2.

[0030] The cold plate body 2 includes a lower plate 21 with a flow channel 211 and an upper plate 22 disposed on the lower plate 21. The frame 1 is disposed on the edge of the upper plate 22, and two or more support plates 3 are disposed at the bottom of the lower plate 21. The flow channel 211 is specifically formed on the lower plate 21 by stamping. Based on this configuration, there is no need to additionally provide a flow channel plate between the upper plate 22 and the lower plate 21, which can reduce the weight of the cold plate body 2 and facilitate the overall lightweight design.

[0031] in, Figure 3 An feasible flow channel 211 structural design is demonstrated, in which the inlet and outlet ends of the flow channel 211 are located on the same side of the lower plate 21. The upper plate 22 is provided with two water nozzles on the side corresponding to the inlet and outlet ends of the flow channel 211. One water nozzle is connected to the inlet end of the flow channel 211, and the other water nozzle is connected to the outlet end of the flow channel 211. These two water nozzles connect to an external coolant circulation loop. In other embodiments, the flow channel 211 can also adopt other design styles, as long as they meet the cooling requirements of the battery module 200.

[0032] This utility model also provides a battery pack, which includes a battery module 200, a top cover, and a liquid cooling plate 100 as described above. The battery module 200 is fixedly mounted on the liquid cooling plate 100, and the top cover covers the battery module 200 and is partially fixed to the frame 1 to encapsulate the battery module 200. Due to the inclusion of the liquid cooling plate 100, this battery pack provides stronger support for the battery module 200, effectively ensuring the reliability of the support. It also occupies less bottom space, which helps improve the space utilization of the energy storage compartment and facilitates the overall lightweight design of the battery pack.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0034] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A liquid cold plate, characterized by, The device includes a frame (1), a cold plate body (2), and a tray (3). The frame (1) is located on the edge of the cold plate body (2) for arranging the battery module (200). There are two or more trays (3), and both trays (3) are located at the bottom of the cold plate body (2). The two ends of the two or more trays (3) are fixedly connected to the edge of the cold plate body (2) and the frame (1). Support strips (31) are provided on the two or more trays (3) along the side away from the bottom of the cold plate body (2) to the side facing the bottom of the cold plate body (2). The support strips (31) are in contact with the flow channel (211) at the bottom of the cold plate body (2). At least two sides of the bottom of the frame (1) are provided with protruding strips (11). The protruding strips (11) are located on the side of the cold plate body (2) and the tray (3), and the bottom of the protruding strips (11) is used to contact the cluster frame of the energy storage compartment.

2. The liquid cold plate of claim 1, wherein, Both the frame (1) and the protrusion (11) are hollow structures.

3. The liquid cold plate of either claim 1 or 2, wherein, The length direction of the support bar (31) is set along the length direction of its corresponding flow channel (211).

4. The liquid cold plate of either claim 1 or 2, wherein, A sealing strip is provided between the bottom of the frame (1) and the side of the cold plate body (2) used to arrange the battery module (200).

5. The liquid cooling plate as described in claim 4, characterized in that, The bottom of the frame (1) is provided with a sealing groove (12), and the sealing strip is placed in the sealing groove (12) and is attached to the side of the cold plate body (2) used to arrange the battery module (200).

6. The liquid-cooled plate as described in any one of claims 1, 2, and 5, characterized in that, Two or more of the aforementioned pallets (3) are provided with protrusions (32) along the side away from the bottom of the cold plate body (2) to the side facing the bottom of the cold plate body (2), and the areas where the two ends of the pallets (3) are fixed to the edge of the cold plate body (2) and the frame (1) are located on the protrusions (32).

7. The liquid cold plate of claim 6, wherein, It also includes a fastener (4), and the protrusion (32), the edge of the cold plate body (2) and the frame (1) are all provided with fixing holes. The fastener (4) passes through the fixing holes on the protrusion (32), the edge of the cold plate body (2) and the frame (1) to fix and connect the support plate (3), the cold plate body (2) and the frame (1).

8. The liquid cold plate of any of claims 1, 2, 5, 7, wherein, At least two support bars (31) are provided on a single tray (3) along the spacing direction of the flow channel (211).

9. The liquid cold plate of any of claims 1, 2, 5, 7, wherein, The cold plate body (2) includes a lower plate (21) with a flow channel (211) and an upper plate (22) on the lower plate (21). The frame (1) is located at the edge of the upper plate (22), and two or more trays (3) are located at the bottom of the lower plate (21).

10. A battery pack, characterized by, It includes a battery module (200), a top cover, and a liquid cooling plate (100) as described in any one of claims 1-9, wherein the battery module (200) is disposed on the liquid cooling plate (100), and the top cover covers the outside of the battery module (200) and is fixed to the frame (1).

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