A battery pack housing and a battery pack

Abstract

The utility model discloses a battery package shell and battery package, including the cooling plate in the battery package shell, the outside installation of battery package shell has the cold plate external connection, the cold plate external connection with cooling plate intercommunication, and still install the limiting component of the support of cold plate external connection in the outer wall of battery package shell. The present application is equipped with the cold plate external connection in the battery package outside, and the cold plate external connection intercommunication with cooling plate, one aspect can cancel the cooling plate external connecting pipeline and reduce the cost, on the other hand, then can avoid the cooling liquid leakage in the bag of cooling plate inlet and outlet mouth part, and simultaneously, the present application designs the limiting component to the cold plate external connection and cooling package and carries out the spacing and protection, prevents the chassis knock -knocking of vehicle in the running process etc.

Description

Technical Field

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

[0002] With the rapid development of the new energy industry and the increasing market share of new energy vehicles, more and more companies are joining the new energy vehicle industry chain, leading to fierce competition. Therefore, designing and manufacturing safer and more reliable new energy vehicle battery packs has become particularly important.

[0003] Currently, the industry standard for battery pack coolant inlets is typically located inside the battery pack casing. While the casing protects the inlets, this design carries the risk of coolant leakage into the pack and requires additional piping for connection and assembly with the vehicle, increasing costs. Coolant inlets on the cold plate can be located outside the battery pack. This eliminates the need for piping, reducing costs, and also prevents coolant leakage from the inlet area into the battery pack. However, with the inlets outside the pack, they lack proper protection, making them vulnerable to impacts during vehicle operation, such as chassis collisions, which could lead to coolant leakage. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to solve the problem of coolant leakage caused by the cooling plate water inlet being located outside the battery pack and lacking relevant protection.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A battery pack housing includes a cooling plate located inside the battery pack housing, an external cold plate connecting part installed on the outside of the battery pack housing, the external cold plate connecting part communicating with the cooling plate, and a limiting component supporting the external cold plate connecting part installed on the outer wall of the battery pack housing.

[0006] This application provides an external cold plate connection on the outside of the battery pack, which is connected to the cooling plate. On the one hand, this eliminates the need for external piping to the cooling plate, reducing costs. On the other hand, it prevents coolant leakage from the inlet and outlet of the cooling plate into the pack. At the same time, this application designs a limiting component to limit and protect the external cold plate connection and the cooling pack, preventing problems such as coolant leakage caused by chassis collisions during vehicle operation.

[0007] As a further embodiment of this utility model: the limiting component includes a bracket, which can connect the external cold plate connecting part to the battery pack housing from both sides of the external cold plate connecting part.

[0008] As a further embodiment of this utility model, the external connecting part of the cold plate is provided with a water inlet connector and a drain connector.

[0009] As a further embodiment of this utility model: the external connecting part of the cold plate has an overall "convex" shape structure with an open hole inside. The water inlet connector and the drain connector are both connected to the open hole. The external connecting part of the cold plate is connected to the water inlet and outlet of the cooling plate through a pipe.

[0010] As a further embodiment of this utility model: a bottom guard plate is installed at the bottom of the cooling plate, and the ends of both the bottom guard plate and the cooling plate extend out of the side beam of the battery pack housing. The part of the bottom guard plate extending out of the side beam is connected to the battery pack housing by a pressure strip.

[0011] As a further embodiment of this utility model: sealing foam is provided between the part of the bottom guard plate that extends out of the side beam and the cooling plate.

[0012] As a further embodiment of this utility model, a supporting foam is provided between the bottom protective plate and the cooling plate located at the lower part of the battery pack housing.

[0013] As a further embodiment of this utility model: a polyurea coating layer is provided on the bottom protective plate.

[0014] As a further embodiment of this utility model: a profile beam is installed on the outer wall of the battery pack housing, and the profile beam can limit the connection position of the external connection part between the cooling plate and the cold plate in the Z direction.

[0015] This utility model also discloses a battery pack, including the aforementioned battery pack housing.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This application provides an external cold plate connection on the outside of the battery pack, which is connected to the cooling plate. On the one hand, this eliminates the need for external piping to the cooling plate, reducing costs. On the other hand, it prevents coolant leakage from the inlet and outlet of the cooling plate into the pack. At the same time, this application designs a bracket and profile beam to limit and protect the external cold plate connection and the cooling pack, preventing problems such as coolant leakage caused by chassis collisions during vehicle operation. 2. Add profile beams to the battery pack housing. The profile beams can limit the Z-axis connection between the cooling plate and the external cold plate connection. On the one hand, this limits the Z-axis deformation and damage of the external cold plate connection under the tension of the vehicle pipeline. On the other hand, it protects the external cold plate connection and prevents the coolant from leaking from the external cold plate connection when the vehicle is in motion. 3. The bracket is used to connect the external cold plate connection part and the battery pack housing, and both can be detached and connected. It can fix the external cold plate connection part, offset the horizontal tension after the external cold plate connection part and the vehicle pipeline are assembled, and prevent the external cold plate connection part from deforming, cracking and leaking under horizontal tension. 4. Polyurea coating is added to the bottom guard plate to improve its impact and stone chip protection capabilities, and better protect the cooling plate; 5. Add sealing foam between the part of the bottom guard plate that extends out of the battery pack housing side beam and the cooling plate to prevent foreign objects from entering the gap between them; add supporting foam (not shown in the figure) between the bottom guard plate located directly below the battery pack housing and the cooling plate to provide support for the entire cooling plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the battery pack housing according to an embodiment of the present invention; Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged view of area A in the image; Figure 3 This is an embodiment of the present utility model. Figure 1 The front view; Figure 4 This is an embodiment of the present utility model. Figure 1 Exploded view; Explanation of reference numerals in the attached figures: 1. External cold plate connection; 101. Water inlet connector; 102. Drainage connector; 2. Profile beam; 3. Bracket; 4. Bottom guard plate; 5. Battery pack housing; 6. Cooling plate; 7. Pressure strip; 8. Sealing foam. Detailed Implementation

[0018] 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.

[0019] Example 1 Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A battery pack housing includes an external cold plate connection part 1, a profile beam 2, a bracket 3, a bottom protective plate 4, a cooling plate 6, and a pressure strip 7.

[0020] Reference Figure 2The external cold plate connection part 1 is located on the outside of the battery pack housing 5. The external cold plate connection part 1 has a water inlet connector 101 and a drain connector 102. The bottom of the external cold plate connection part 1 is connected to the cooling plate 6. The external cold plate connection part 1 can be directly assembled with the vehicle pipeline. On the one hand, the pipeline is eliminated. On the other hand, if the joint leaks, the coolant will be outside the battery pack and will not leak into the battery pack.

[0021] Reference Figure 2 The profile beam 2 is welded to the battery pack housing 5. The profile beam 2 can limit the connection between the cooling plate 6 and the external cold plate connection part 1 in the Z direction. On the one hand, it limits the external cold plate connection part 1 from being deformed and damaged in the Z direction under the tension of the vehicle pipeline. On the other hand, it protects the external cold plate connection part 1 and prevents it from being bumped during vehicle operation, which could lead to leakage of the external cold plate connection part 1.

[0022] Reference Figure 2 and Figure 3 The bracket 3 is used to connect and fix the external cold plate connection part 1 and the battery pack housing 5. Both can be detachably connected, that is, they can be assembled with the external cold plate connection part 1 and the battery pack housing 5 respectively using bolts or pins. This can fix the external cold plate connection part 1, offset the horizontal tension after the external cold plate connection part 1 is assembled with the vehicle piping, and prevent the external cold plate connection part 1 from deforming, cracking and leaking under horizontal tension. Two sets of brackets 3 are provided, which are detachably connected to the battery pack housing 5 from both sides of the external cold plate connection part 1.

[0023] Reference Figure 2 The bottom guard plate 4 is located at the bottom of the battery pack housing 5. One end of the bottom guard plate 4 can extend out of the side beam of the battery pack housing 5 and is equipped with a pressure strip 7. The pressure strip 7 is located above the bottom guard plate 4 and can be assembled with the profile beam 2 added to the battery pack housing 5 by rivet nuts. It plays a protective role for the exterior of the cooling plate 6 and the external connection part 1 of the cold plate, preventing deformation and leakage of the cold plate pack during vehicle operation. It should be noted that the bottom guard plate 4 is coated with polyurea to improve its anti-collision and anti-stone-impact capabilities, and better protect the cooling plate 6.

[0024] Reference Figure 3 and Figure 4 The battery pack housing 5 provides assembly support for the profile beam 2 and bracket 3, and the battery pack is subsequently installed inside it.

[0025] Reference Figure 2 The end of the cooling plate 6 extends out of the side beam of the battery pack housing 5 and is connected to the external cold plate connection part 1 provided on the outside of the battery pack housing 5; the coolant enters and exits through the external cold plate connection part 1, and the coolant can enter and exit the cooling plate 6.

[0026] Reference Figure 2Sealing foam 8 is added between the part of the bottom guard plate 4 that extends out of the side beam of the battery pack housing 5 and the cooling plate 6 to prevent foreign objects from entering the gap between them; support foam (not shown in the figure) is added between the bottom guard plate 4 located directly below the battery pack housing 5 and the cooling plate 6 to provide support for the cooling plate 6.

[0027] Example 2 This embodiment discloses a battery pack, including the battery pack housing in Embodiment 1, and a battery (not shown in the figure) is installed inside the battery pack housing.

[0028] 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 pack housing, comprising a cooling plate located within the battery pack housing, characterized in that, The battery pack housing is equipped with an external cold plate connection part, which is connected to the cooling plate. A limiting component that supports the external cold plate connection part is also installed on the outer wall of the battery pack housing.

2. The battery pack housing according to claim 1, characterized in that: The limiting component includes a bracket, which can connect the external cold plate connection part to the battery pack housing from both sides of the external cold plate connection part.

3. A battery pack housing according to claim 1, characterized in that: The external connection part of the cold plate is provided with a water inlet connector and a drain connector.

4. A battery pack housing according to claim 3, characterized in that: The external connection part of the cold plate has a convex shape and an internal through hole. The water inlet connector and the drain connector are both connected to the through hole. The external connection part of the cold plate is connected to the water inlet and outlet of the cooling plate through a pipe.

5. A battery pack housing according to claim 1, characterized in that: A bottom guard plate is installed at the bottom of the cooling plate. The ends of both the bottom guard plate and the cooling plate extend out of the side beam of the battery pack housing. The part of the bottom guard plate that extends out of the side beam is connected to the battery pack housing by a pressure strip.

6. A battery pack housing according to claim 5, characterized in that: Sealing foam is installed between the part of the bottom guard plate that extends out of the side beam and the cooling plate.

7. A battery pack housing according to claim 5, characterized in that: Supporting foam is provided between the bottom protective plate and the cooling plate located at the bottom of the battery pack housing.

8. A battery pack housing according to claim 5, characterized in that: The bottom protective plate is coated with a polyurea coating.

9. A battery pack housing according to claim 1, characterized in that: A profile beam is installed on the outer wall of the battery pack housing, and the profile beam can limit the connection position of the external connection between the cooling plate and the cold plate in the Z direction.

10. A battery pack, characterized in that: Includes the battery pack housing as described in any one of claims 1-9.

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