Battery module and battery pack

Abstract

The utility model provides a kind of battery module and battery pack, battery module includes electric core, first cooling plate, second cooling plate, first integrated end plate, second integrated end plate;The top and bottom of electric core are provided with first cooling plate, second cooling plate respectively, the front and rear of electric core are provided with first integrated end plate, second integrated end plate respectively, battery pack includes battery module, lower shell, water inlet assembly, water outlet assembly, at least one group of battery module is placed along Z axis in lower shell, each group of battery module includes at least one battery module arranged along X axis, the water inlet end of each battery module is communicated with water inlet assembly and is arranged, the water outlet end of each battery module is communicated with water outlet assembly and is arranged.The utility model is provided with the above structure, replaces side plate by cooling plate, omits side plate and cooling module, reduces the number of parts, reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to a battery module and battery pack. Background Technology

[0002] Due to the structural characteristics of the pouch battery pack itself, metal parts are required as support components when it is assembled into a module. During assembly, it is also stacked with an independent cooling module, resulting in too many components in the module and an overall thickness in the Z direction. Although the pouch battery pack has a cost advantage at the cell level, the large number of components at the battery pack level keeps the cost high. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to reduce the production cost of battery packs.

[0004] This utility model solves the above-mentioned technical problems through the following technical means:

[0005] A battery module includes a battery cell, a first cooling plate, a second cooling plate, a first integrated end plate, and a second integrated end plate; the top and bottom of the battery cell are respectively provided with the first cooling plate and the second cooling plate, and the front and rear parts of the battery cell are respectively provided with the first integrated end plate and the second integrated end plate.

[0006] Beneficial effects: By setting up the battery cell, first cooling plate, second cooling plate, first integrated end plate, and second integrated end plate, the side plate is replaced by the cooling plate, eliminating the need for the side plate and cooling module, reducing the number of parts and lowering production costs.

[0007] Furthermore, the second integrated end plate includes an end plate and a tee fitting. The end plate contains a tee fitting, and the two ends of the tee fitting are respectively connected to the first cooling plate and the second cooling plate.

[0008] Beneficial effects: By integrating the end plate and tee fittings, the Z-axis height is reduced, and the components are integrated into the end plate.

[0009] Furthermore, both the first and second cooling plates have threaded openings near the tee fitting, and the first and second cooling plates are threadedly connected to the corresponding tee fittings.

[0010] Beneficial effects: The threaded connection between the cooling plate and the tee fitting facilitates installation and disassembly.

[0011] Furthermore, mounting grooves are provided on both the top and bottom walls of the end plate. A first base is fixed in the mounting groove at the top, and a second base is fixed in the mounting groove at the bottom. The upper and lower ends of the tee fitting are respectively installed through the upper and lower first and second bases. The first base is fixed to the first cooling plate, and the second base is fixed to the second cooling plate.

[0012] Beneficial effects: By setting the first base and the second base, the cooling plate and the end plate can be firmly integrated into one unit.

[0013] Furthermore, the first base is welded and fixed to the first cooling plate, and the second base is welded and fixed to the second cooling plate.

[0014] Furthermore, the first integrated end board and the second integrated end board are set as mirror images.

[0015] Furthermore, the battery cell is fixed to the first cooling plate and the second cooling plate with glue.

[0016] Furthermore, the top wall of the first cooling plate is curved and raised, and the bottom wall of the second cooling plate is curved and raised.

[0017] Beneficial effect: The curved protrusions in the cooling plate structure can increase the heat dissipation area.

[0018] This utility model also discloses a battery pack, including the battery module described in any of the above technical solutions, and further including a lower shell, a water inlet component, and a water outlet component. At least one set of battery modules is placed in the lower shell along the Z-axis. Each set of battery modules includes at least one battery module arranged along the X-axis. The water inlet end of each battery module is connected to the water inlet component, and the water outlet end of each battery module is connected to the water outlet component.

[0019] Beneficial effects: By setting up the lower shell, water inlet assembly, water outlet assembly, and battery module, the side plate and cooling module are omitted, reducing the number of parts and lowering production costs.

[0020] Furthermore, the water inlet assembly and the water outlet assembly are fixed to the front and rear sides of the lower housing, respectively. The water inlet assembly and the water outlet assembly are connected in series by multiple water pipes, and the main pipes of the water inlet assembly and the water outlet assembly extend out of the front and rear walls of the lower housing, respectively. Attached Figure Description

[0021] Figure 1 This is a top view of the battery pack according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a side sectional view of the battery pack according to Embodiment 1 of this utility model;

[0023] Figure 3 This is an exploded view of the battery pack according to Embodiment 1 of this utility model;

[0024] Figure 4 This is an assembly diagram of the second integrated end plate and the first cooling plate in the battery pack of Embodiment 1 of this utility model.

[0025] Explanation of reference numerals in the attached figures

[0026] Lower housing 1; Water inlet assembly 2; Water outlet assembly 3; Battery module 4;

[0027] Battery cell 41; First cooling plate 42; Second cooling plate 43; First integrated end plate 44; Second integrated end plate 45;

[0028] End plate 451; First base 452; Second base 453; T-fitting 454. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1

[0031] like Figure 1 As shown, this embodiment provides a battery pack, including a lower housing 1, a water inlet assembly 2, a water outlet assembly 3, and a battery module 4.

[0032] like Figure 1 , Figure 2 As shown, at least one set of battery modules 4 is placed inside the lower housing 1 along the Z-axis. Each set of battery modules 4 includes at least one battery module 4 arranged along the X-axis. In this embodiment, two sets of battery modules 4 are placed inside the lower housing 1 along the Z-axis. Each set of battery modules 4 includes two battery modules 4 arranged along the X-axis. The water inlet end of each battery module 4 is connected to the water inlet component 2, and the water outlet end of each battery module 4 is connected to the water outlet component 3. The water inlet component 2 and the water outlet component 3 are respectively fixed to the front and rear sides inside the lower housing 1. The water inlet component 2 and the water outlet component 3 are connected in series by multiple water pipes. The main pipes of the water inlet component 2 and the water outlet component 3 extend out of the front and rear walls of the lower housing 1, respectively.

[0033] like Figure 1 , Figure 3 , Figure 4As shown, the battery module 4 includes a battery cell 41, a first cooling plate 42, a second cooling plate 43, a first integrated end plate 44, and a second integrated end plate 45. The first cooling plate 42 is fixed to the top wall of the battery cell 41, the second cooling plate 43 is fixed to the bottom wall of the battery cell 41, the first integrated end plate 44 is fixed to the front wall of the battery cell 41, and the second integrated end plate 45 is fixed to the rear wall of the battery cell 41. The first cooling plate 42 and the second cooling plate 43 are mirror images of each other, and the first integrated end plate 44 and the second integrated end plate 45 are also mirror images of each other. This embodiment illustrates the battery cell 4. 1. The first cooling plate 42 and the second cooling plate 43 are fixed together with glue. Taking the first cooling plate 42 as an example, the top wall of the first cooling plate 42 is curved and protruding to increase the heat dissipation area. The bottom wall of the first cooling plate 42 has threaded openings near the first integrated end plate 44 and the second integrated end plate 45, so that condensate can enter the curved protrusion of the first cooling plate 42 through the threaded openings to cool the cell 41. Taking the second integrated end plate 45 as an example, the second integrated end plate 45 includes an end plate 451, a first integrated end plate 452, a second integrated end plate 453, and a second integrated end plate 454. The base 452, the second base 453, and the tee fitting 454 are all provided with mounting grooves in the middle of the top and bottom walls of the end plate 451. The first base 452 is fixed in the top mounting groove, and the second base 453 is fixed in the bottom mounting groove. The tee fitting 454 is integrated into the end plate 451. The upper and lower ends of the tee fitting 454 pass through the upper and lower first bases 452 and second bases 453, respectively, while the side end of the tee fitting 454 passes through the side wall of the end plate 451 away from the battery cell 41. Do not connect the first cooling plate 42 or the second cooling plate 43 to the threaded opening. The first base 452 is welded and fixed to the first cooling plate 42. The first base 452 is bolted and fixed in the mounting groove at the top. The second base 453 is welded and fixed to the second cooling plate 43. The second base 453 is bolted and fixed in the mounting groove at the bottom. The cooling plate is relatively thin, and the threaded connection is not very secure. By setting the base, the cooling plate and the end plate 451 can be firmly integrated. The side passage of the tee fitting 454 is connected to the water inlet assembly 2 or the water outlet assembly 3.

[0034] In use, condensate is sequentially introduced into the first cooling plate 42 and the second cooling plate 43 of each battery module 4 through the water inlet assembly 2 and the first integrated end plate 44 to cool the corresponding battery cell 41. Then, it flows out sequentially through the second integrated end plate 45 and the water outlet assembly 3 to complete the cyclic cooling of the battery cell 41.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery module, characterized by, Includes battery cell, first cooling plate, second cooling plate, first integrated end plate, and second integrated end plate; The top and bottom of the battery cell are respectively provided with a first cooling plate and a second cooling plate, and the front and rear parts of the battery cell are respectively provided with a first integrated end plate and a second integrated end plate.

2. The battery module according to claim 1, characterized in that: The second integrated end plate includes an end plate and a tee fitting. The end plate contains a tee fitting, and the two ends of the tee fitting are respectively connected to the first cooling plate and the second cooling plate.

3. The battery module according to claim 2, characterized in that: Both the first and second cooling plates have threaded openings near the tee fittings, and the first and second cooling plates are threadedly connected to the corresponding tee fittings.

4. The battery module according to claim 2, characterized in that: The top and bottom walls of the end plate are provided with mounting grooves. A first base is fixed in the mounting groove at the top and a second base is fixed in the mounting groove at the bottom. The upper and lower ends of the tee fitting are respectively set through the upper and lower first and second bases. The first base is fixed to the first cooling plate and the second base is fixed to the second cooling plate.

5. The battery module according to claim 4, characterized in that: The first base is welded and fixed to the first cooling plate, and the second base is welded and fixed to the second cooling plate.

6. The battery module according to any one of claims 1-5, characterized in that: The first integrated end board and the second integrated end board are set as mirror images.

7. The battery module according to claim 1, characterized in that: The battery cell is fixed to the first cooling plate and the second cooling plate with glue.

8. The battery module according to claim 1, characterized in that: The top wall of the first cooling plate is curved and raised, and the bottom wall of the second cooling plate is curved and raised.

9. A battery pack, characterized in that: The battery module includes any one of claims 1-8, and further includes a lower housing, a water inlet assembly, and a water outlet assembly. At least one set of battery modules is placed inside the lower housing along the Z-axis. Each set of battery modules includes at least one battery module arranged along the X-axis. The water inlet end of each battery module is connected to the water inlet assembly, and the water outlet end of each battery module is connected to the water outlet assembly.

10. The battery pack according to claim 9, characterized in that: The water inlet assembly and the water outlet assembly are fixed on the front and rear sides of the lower housing, respectively. The water inlet assembly and the water outlet assembly are connected in series by multiple water pipes, and the main pipes of the water inlet assembly and the water outlet assembly extend out of the front and rear walls of the lower housing, respectively.

Images