Battery box body, battery and electric equipment

Abstract

The utility model provides a battery box body, a battery and electric equipment. The battery box body comprises a frame and a tray assembly, and the tray assembly is arranged on one side of the frame and connected with the frame; the tray assembly comprises a heat exchange piece and a tray, and the tray and the heat exchange piece are pressed together through a stamping process to form an integral piece; and the tray is made of an insulating material. The energy density of the battery can be improved, and the preparation cost of the battery can be reduced.

Description

Technical Field

[0001] This application relates to the field of energy storage, and more particularly to a battery enclosure, a battery, and an electrical device. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the performance requirements for battery boxes are becoming increasingly stringent, needing to meet demands such as lightweight design, high insulation, excellent thermal insulation performance, and bottom impact protection. In related technologies, battery boxes are typically manufactured using metal materials through stamping or welding.

[0003] In order to exchange heat with the heat generated by the battery during operation, heat exchange components are usually installed inside the battery casing. This reduces the energy density of the battery and increases the manufacturing cost of the battery. Utility Model Content

[0004] This application provides a battery housing, a battery, and an electrical device, which improves the energy density of the battery and reduces the manufacturing cost of the battery.

[0005] In a first aspect, embodiments of this application provide a battery housing, comprising:

[0006] frame;

[0007] A tray assembly is disposed on one side of the frame and connected to the frame; wherein the tray assembly includes a heat exchanger and a tray, the tray being pressed together with the heat exchanger membrane by a stamping process to form an integral part; the tray is made of an insulating material.

[0008] In one possible implementation, the tray has a flange that covers a portion of the top surface of the heat exchanger along its circumference.

[0009] In one possible implementation, the tray is any one of a polypropylene honeycomb panel, a polyvinyl chloride honeycomb panel, a polyurethane foam panel, a polypropylene foam panel, and a polystyrene foam panel.

[0010] And / or, the frame is made of any one of glass fiber composite materials, carbon fiber composite materials, and metal materials.

[0011] In one possible implementation, the tray has a receiving groove on the side opposite to the frame, and the receiving groove extends through the tray in a direction opposite to the frame and in a direction opposite to the center of the tray.

[0012] The frame surrounds the tray assembly and is disposed within the receiving slot.

[0013] In one possible implementation, the frame includes a frame body and an extension, the extension being connected to the end of the frame body toward the tray assembly and extending toward the center of the tray assembly;

[0014] The frame body encloses the circumference of the tray assembly, the extension is disposed within the receiving groove, and the extension is flush with the surface of the tray opposite to the frame body.

[0015] In one possible implementation, the receiving groove is an annular groove.

[0016] In one possible implementation, the battery housing further includes a protective plate disposed on the side of the tray assembly opposite to the frame and connected to both the frame and the tray assembly.

[0017] In one possible implementation, the protective panel is connected to the frame and the tray assembly respectively via an adhesive layer.

[0018] Secondly, embodiments of this application provide a battery, including a battery module and the battery housing described in the first aspect, wherein the battery module is disposed within the battery housing.

[0019] Thirdly, embodiments of this application provide an electrical device, including an electrical device and the battery described in the second aspect, wherein the battery is electrically connected to the electrical device to provide electrical energy to the electrical device.

[0020] The battery case, battery, and electrical device provided in this application embodiment, by manufacturing the frame and tray assembly as a separate structure, allow for free setting of the tray material. For example, the tray material can be insulating, which reduces the weight of the tray and thus the weight of the battery case, thereby increasing the energy density of the battery. Furthermore, it eliminates the need for an additional insulating layer on the tray, simplifying the battery case manufacturing process and reducing production costs.

[0021] Furthermore, the tray is pressed together with the heat exchanger membrane using a stamping process to form a single integral component. This improves the connection strength between the tray and the heat exchanger.

[0022] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the battery box, battery, and electrical equipment provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 A perspective view of the battery housing provided in an embodiment of this application;

[0025] Figure 2 This is a top view of the battery housing provided in an embodiment of this application;

[0026] Figure 3 For along Figure 2 A cross-sectional view along the AA direction;

[0027] Figure 4 for Figure 3 Enlarged view of region B in the middle;

[0028] Figure 5 A perspective view of the frame provided in the embodiments of this application;

[0029] Figure 6 A schematic diagram of a tray assembly provided in an embodiment of this application;

[0030] Figure 7 For along Figure 6 A cross-sectional view along the CC direction;

[0031] Figure 8 for Figure 7 A magnified diagram of region D in the middle.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100: Frame; 110: Frame body; 120: Extension; 130: Protrusion;

[0034] 200: Tray assembly; 210: Heat exchanger; 211: Liquid inlet; 212: Liquid outlet; 220: Tray; 221: Receptacle; 230: Protective plate.

[0035] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] As described in the background section, batteries in related technologies suffer from low energy density and complex battery casing manufacturing processes. This is because the battery casing is typically made of metal, which results in significant weight, increasing the overall weight of the battery and consequently reducing its energy density. Furthermore, current battery casings and heat exchangers are separate structures, increasing the manufacturing and assembly processes for the heat exchanger and raising the overall battery production cost.

[0038] To address the aforementioned technical problems, this application provides a battery housing, a battery, and an electrical device. By manufacturing the frame and tray assembly as a separate structure, the material of the tray can be freely set. For example, the tray can be made of an insulating material. This reduces the weight of the tray, thereby reducing the weight of the battery housing and increasing the energy density of the battery. Furthermore, it eliminates the need for an additional insulating layer on the tray, simplifying the manufacturing process of the battery housing and reducing its production cost.

[0039] Furthermore, the tray is pressed together with the heat exchanger membrane using a stamping process to form a single integral component. This improves the connection strength between the tray and the heat exchanger.

[0040] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0041] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] Please refer to Figures 1 to 8This application provides a battery housing for housing a battery module to prevent moisture and dust from entering and to ensure the reliable operation of the battery module under various environmental conditions.

[0043] Please refer to Figure 5 The battery housing includes a frame 100, which serves as the main component of the battery housing. The shape of the frame 100 can be freely designed according to the arrangement of the battery modules disposed within it. For example, the frame 100 can be square, such as a rectangle or a square.

[0044] In some embodiments, the frame 100 is made of any one of glass fiber composite material, carbon fiber composite material, and metal. When the frame 100 is made of glass fiber composite material or carbon fiber composite material, the overall weight of the battery box can be further reduced, thereby increasing the energy density of the battery. When the frame 100 is made of metal, the structural strength of the frame 100 can be guaranteed, making it particularly suitable for vibration or impact conditions where high structural rigidity is required.

[0045] Please refer to Figure 3 and Figure 6 The battery housing also includes a tray assembly 200, which is disposed on one side of the frame 100 and connected to the frame 100. It should be understood that the tray assembly 200 can be connected to the frame 100 by adhesive or riveting, so that the tray assembly 200 and the frame 100 are connected together.

[0046] Compared with related technologies, this embodiment avoids the use of welding to fix the tray assembly 200 and the frame 100, thereby reducing or even avoiding welding deformation of the battery box and improving the manufacturing yield of the battery box.

[0047] Please refer to Figure 3 , Figure 7 and Figure 8 The tray assembly 200 includes a heat exchanger 210 and a tray 220. The tray 220 is pressed together with the heat exchanger 210 using a stamping process to form an integral part. The tray 220 is made of an insulating material. Exemplarily, the pre-prepared heat exchanger 210 can be positioned onto a pre-formed tray. Then, a stamping die is used to press the assembly, causing the heat exchanger 210 to embed into the pre-formed tray and cure. This allows for mechanical interlocking and interfacial chemical bonding between the heat exchanger (e.g., a liquid cooling plate) and the tray (e.g., a glass fiber / carbon fiber reinforced resin matrix), significantly improving the connection strength between the heat exchanger 210 and the tray 220.

[0048] Given that the tray assembly 200 and the frame 100 are separate structures in this embodiment, the material of the tray 220 can be freely set. For example, the material of the tray 220 can be an insulating material. This reduces the weight of the tray 220, thereby reducing the weight of the battery box and increasing the energy density of the battery. On the other hand, it eliminates the need for an additional insulating layer on the tray 220, simplifying the manufacturing process of the battery box and reducing its production cost.

[0049] It should be noted that the heat exchanger 210 involved in this embodiment is used for heat exchange with the battery module. In this embodiment, heat exchange can be understood as the heat exchanger 210 being able to cool or heat the battery module. Specifically, the type of fluid flowing within the heat exchanger 210 can be freely selected depending on the environment in which the battery module is located. For example, when the heat exchanger 210 is used to cool the battery module, the fluid may include refrigerant, CO2, ethylene glycol, or water.

[0050] In some embodiments, the heat exchanger 210 may include a heat spreader plate and a flow channel plate. The flow channel plate has flow channels formed therein. The heat spreader plate is disposed on the flow channel plate and covers the flow channels to ensure the airtightness of the flow channels. It should be understood that the shape of the flow channel plate 30 can be regular or irregular; the following embodiments are described using a rectangular flow channel plate 30 as an example.

[0051] The flow channel plate is embedded in the tray 220, which provides support for the flow channel plate and improves its stability. At the same time, a relatively flat heat spreader is exposed to facilitate the installation of the battery module.

[0052] Please refer to Figure 7 The heat exchanger 210 also includes an inlet 211 and an outlet 212, both of which are mounted on the temperature equalization plate and connected to the flow channel to facilitate fluid flow in the flow channel.

[0053] In one possible implementation, the tray 220 has a flange (not shown) that covers a portion of the top surface of the heat exchanger 210 circumferentially. This increases the contact area between the tray 220 and the heat exchanger 210, thereby improving the connection strength between them.

[0054] In some embodiments, the tray 220 is any one of a polypropylene honeycomb panel, a polyvinyl chloride honeycomb panel, a polyurethane foam panel, a polypropylene foam panel, and a polystyrene foam panel. Thus, the tray 220 is not a compact structure; it has internal perforations. When the battery box is subjected to external impact (such as a vehicle collision), the perforated structure can absorb energy through plastic deformation, reducing the impact force transmitted to the battery module and improving the structural strength of the battery box. Furthermore, the perforated structure can reduce the material usage of the tray 220, further reducing its weight while maintaining sufficient bending stiffness. Moreover, the tray 220 can significantly improve the thermal insulation performance of the heat exchanger 210 and the insulation performance of the battery.

[0055] It should be noted that the frame 100 can wrap around the outer periphery of the tray assembly 200, or it can have other connection methods.

[0056] Please refer to Figure 7 and Figure 8 For example, a receiving groove 221 is provided on the side of the tray 220 away from the frame 100. The receiving groove 221 extends through the tray 220 in a direction away from the frame 100 and in a direction away from the center of the tray assembly 200. In other words, with a longitudinal section perpendicular to the cross-section of the tray 220, the shape of the receiving groove 221 is similar to an L-shape, so that the receiving groove 221 exposes the bottom and sides of the tray 220.

[0057] The frame 100 surrounds the tray assembly 200 and is disposed within the receiving groove 221. That is, the frame 100 surrounds the side of the tray assembly 200 and covers the receiving groove 221. In this way, the contact area between the frame 100 and the tray assembly 200 can be increased, thereby improving the stability of the battery box.

[0058] The receiving groove 221 can be an annular groove, which further increases the contact area between the frame 100 and the tray assembly 200. It should be noted that the receiving groove 221 can also be an annular groove, and there can be multiple receiving grooves 221, which are arranged at intervals along the circumference of the tray 220.

[0059] Please refer to Figure 4 and Figure 5 As one possible implementation of the frame, the frame 100 includes a frame body 110 and an extension 120. The extension 120 is connected to the end of the frame body 110 toward the tray assembly 200 and extends toward the center of the tray assembly 200. Thus, the longitudinal cross-sectional shape of the frame 100 can be L-shaped.

[0060] The frame body 110 encloses the tray assembly 200 circumferentially, and the extension 120 is disposed within the receiving groove 221. The extension 120 and the surface of the tray 220 facing away from the frame body 110 are flush with each other. In this way, the surfaces of the extension 120 and the tray 220 facing away from the frame body 110 form a plane, which facilitates the installation of the battery box and other components.

[0061] In one possible implementation, the battery housing further includes a protective plate 230 disposed on the side of the tray assembly 200 opposite to the frame 100 and connected to both the frame 100 and the tray assembly 200. Exemplarily, the protective plate 230 is connected to both the frame 100 and the tray assembly 200 via an adhesive layer (not shown).

[0062] The protective plate 230 is made of materials including fiberglass composite material, carbon fiber composite material, or metal material. The protective plate 230 can protect the bottom of the battery box, withstand bottom ball impacts, and thus meet the bottom protection requirements under harsh conditions.

[0063] It should be noted that when the battery box includes the protective plate 230, the bottom surface of the extension 120 is parallel to the bottom surface of the tray 220.

[0064] It should also be noted that the battery box provided in this application embodiment also includes a box cover (not shown in the figure), which is detachably connected to the end of the frame 100 away from the tray assembly 200 to cover the frame 100.

[0065] To further enhance the connection strength between the lid and the frame 100, the end of the frame body 110 facing away from the pallet assembly 200 has a protrusion 130, which extends in a direction away from the center of the frame body 110. This allows the protrusion 130 and the lid to be connected by fasteners, increasing the contact area between the lid and the frame, resulting in more even stress distribution at the connection point and preventing localized stress concentration. Furthermore, the protrusion 130 can also serve as a positioning reference, enabling quick alignment of the lid and frame during assembly and reducing installation time for the lid and frame 100.

[0066] This application also provides a battery, which includes a battery module and a battery housing as described in any of the above embodiments. The battery module is disposed within the battery housing. It should be noted that in this embodiment, the number of battery modules can be one or more, and can be freely set according to actual needs.

[0067] Since the embodiments of this application include the battery housing described in any of the above embodiments, they possess all the structure and beneficial effects of the battery housing, and will not be described in detail here.

[0068] This application also provides an electrical device, including an electrical device and a battery as described in any of the above embodiments. The battery is electrically connected to the electrical device and is used to provide electrical energy to the electrical device.

[0069] The electrical equipment in this application embodiment can be a vehicle, for example, a new energy vehicle, which can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. Accordingly, the electrical device can be the vehicle's drive mechanism or the vehicle's control system.

[0070] In addition, electrical equipment can also serve as other energy storage devices, such as mobile phones, portable devices, laptops, electric toys, power tools, ships, and spacecraft. Among these, spacecraft can include airplanes, rockets, space shuttles, or spacecraft.

[0071] Since the electrical device in this embodiment includes the battery described in any of the above embodiments, the electrical device includes all the structure and beneficial effects of the battery, and will not be described in detail here.

[0072] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0073] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery housing, characterized in that, include: frame; A tray assembly is disposed on one side of the frame and connected to the frame; wherein the tray assembly includes a heat exchanger and a tray, the tray being pressed together with the heat exchanger membrane by a stamping process to form an integral part; the tray is made of an insulating material.

2. The battery housing according to claim 1, characterized in that, The tray has a flanged portion that covers a portion of the top surface of the heat exchanger along its circumference.

3. The battery housing according to claim 1, characterized in that, The tray is any one of polypropylene honeycomb board, polyvinyl chloride honeycomb board, polyurethane foam board, polypropylene foam board and polystyrene foam board. And / or, the frame is made of any one of glass fiber composite materials, carbon fiber composite materials, and metal materials.

4. The battery housing according to any one of claims 1-3, characterized in that, The tray has a receiving groove on the side away from the frame, and the receiving groove penetrates the tray in the direction away from the frame and in the direction away from the center of the tray. The frame surrounds the tray assembly and is disposed within the receiving slot.

5. The battery housing according to claim 4, characterized in that, The frame includes a frame body and an extension, the extension being connected to the end of the frame body toward the tray assembly and extending toward the center of the tray assembly; The frame body encloses the circumference of the tray assembly, the extension is disposed within the receiving groove, and the extension is flush with the surface of the tray opposite to the frame body.

6. The battery housing according to claim 5, characterized in that, The receiving groove is an annular groove.

7. The battery housing according to claim 5 or 6, characterized in that, The battery housing also includes a protective plate, which is disposed on the side of the tray assembly opposite to the frame and is connected to both the frame and the tray assembly.

8. The battery housing according to claim 7, characterized in that, The protective panel is connected to the frame and the tray assembly respectively via an adhesive layer.

9. A battery, characterized in that, It includes a battery module and a battery housing as described in any one of claims 1-8, wherein the battery module is disposed within the battery housing.

10. An electrical appliance, characterized in that, It includes an electrical device and the battery of claim 9, wherein the battery is electrically connected to the electrical device to provide electrical energy to the electrical device.

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