Battery box and vehicle

Abstract

The utility model provides a battery box and a vehicle, and particularly relates to the technical field of batteries. The battery box body comprises a battery module, a box body frame and a direct cooling plate. Wherein the battery module is positioned in the box body frame. The direct cooling plate is located at the bottom of the box frame and provided with a refrigerant channel for refrigerant to flow, and the height of the refrigerant channel ranges from 0 mm to 2.8 mm. Therefore, the direct cooling plate is arranged in the battery box body, so that the cooling effect and the integration degree are relatively high, and the strength of the whole structure is also relatively high. In addition, the height of a refrigerant channel, allowing the refrigerant to flow, of the direct cooling plate is relatively low, so that the overall height of the battery box body can be effectively reduced, and the volume grouping rate of the battery box body is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery housing and a vehicle. Background Technology

[0002] With technological advancements and increasing demand for renewable energy, power batteries have been widely applied in numerous fields, including electric vehicles, renewable energy storage, consumer electronics, and industrial equipment. As power density continues to increase, thermal management becomes a critical issue. Overheating or undercooling can lead to performance degradation, reduced reliability, or even damage to power batteries. The battery casing, as a core component of the power battery system, is currently the primary method for integrating power batteries.

[0003] To meet the demands of power batteries, liquid cooling or liquid heating methods are typically used to cool or heat them. The battery casing may include a liquid cooling plate, into which coolant is injected to maintain the normal operation of the power battery and extend its lifespan.

[0004] However, in the existing battery pack, the vehicle requires a specific circulating coolant to cool or heat the power battery for circulation, thereby regulating the temperature of the power battery. The current temperature regulation effect and efficiency need to be improved, and the overall vehicle cost is relatively high. Utility Model Content

[0005] This application provides a battery housing and a vehicle. By incorporating a direct cooling plate within the battery housing, the cooling effect and integration are improved, and the overall structural strength is also increased. Furthermore, the lower height of the refrigerant channels for refrigerant flow within the direct cooling plate effectively reduces the overall height of the battery housing and increases its volumetric packing ratio.

[0006] The first aspect of this application provides a battery housing, comprising:

[0007] Battery module;

[0008] The battery module is located within the housing frame.

[0009] The direct cooling plate is located at the bottom of the cabinet frame and has a refrigerant channel for refrigerant flow. The height of the refrigerant channel ranges from 0 to 2.8 mm.

[0010] The battery housing provided in the first aspect of this application includes a battery module, a housing frame, and a direct cooling plate. The battery module is located within the housing frame. The direct cooling plate is located at the bottom of the housing frame and has a refrigerant channel for refrigerant flow, the height of which ranges from 0-2.8 mm. This placement of the direct cooling plate within the battery housing results in high cooling efficiency and integration, as well as high overall structural strength. Furthermore, the low height of the refrigerant channel on the direct cooling plate effectively reduces the overall height of the battery housing, increasing its volumetric packing ratio.

[0011] In one possible implementation, the direct cooling plate includes a substrate and a flow channel plate stacked together;

[0012] A refrigerant channel is formed between the substrate and the flow channel plate to allow the refrigerant to flow.

[0013] In one possible implementation, a flow channel groove is formed on the side of the flow channel plate facing the substrate;

[0014] The inner wall of the flow channel and at least part of the inner surface of the substrate are arranged to form a refrigerant channel.

[0015] In one possible implementation, the direct cooling plate includes an inlet connector and an outlet connector, both of which are located at one end of the substrate.

[0016] The refrigerant enters the direct cooling plate through the inlet connector along the refrigerant channel and flows out through the outlet connector.

[0017] In one possible implementation, the flow channel plate has an inlet end and an outlet end, the inlet end is connected to an inlet connector, and the outlet end is connected to an outlet connector.

[0018] Both the inlet and outlet ends are connected to the refrigerant channel.

[0019] In one possible implementation, at least a portion of the enclosure frame encloses an installation space for housing several electrical components.

[0020] In one possible implementation, it further includes: a plurality of lifting lug structures, which are fixedly connected to the housing frame and are used for lifting the battery housing.

[0021] In one possible implementation, it further includes: a bottom protective plate;

[0022] The bottom protective plate is located below the direct cooling plate and is used to support the battery box.

[0023] A second aspect of this application provides a vehicle including the battery housing described above.

[0024] In one possible implementation, the vehicle further includes: an air conditioning system;

[0025] The air conditioning system and the direct cooling plate of the battery box are connected.

[0026] It should be understood that the second aspect of this application corresponds to the technical solution of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here.

[0027] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that can be solved by the battery box and vehicle provided by 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 embodiments. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only a part of the embodiments of this application. These drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the battery box provided in an embodiment of this application;

[0030] Figure 2 This is an exploded view of the battery housing provided in an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 - Battery housing;

[0033] 200 - Box frame; 210 - Installation space;

[0034] 300 - Direct cooling plate; 310 - Refrigerant channel; 320 - Substrate; 330 - Flow channel plate; 331 - Flow channel groove;

[0035] 400-Hanging lug structure. Detailed Implementation

[0036] 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 the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] As described in the background art, in existing battery packs, for the whole vehicle, a specific circulating coolant is required to cool or heat the power battery for circulation, thereby regulating the temperature of the power battery. The current temperature regulation effect and efficiency need to be improved, and the overall vehicle cost is high.

[0038] To address the aforementioned technical problems, a first aspect of this application provides a battery housing. The battery housing includes a battery module, a housing frame, and a direct cooling plate. The battery module is located within the housing frame. The direct cooling plate is located at the bottom of the housing frame and has a refrigerant channel for refrigerant flow, with the height of the refrigerant channel ranging from 0-2.8 mm. This placement of the direct cooling plate within the battery housing results in high cooling efficiency and integration, while also increasing the overall structural strength. Furthermore, the low height of the refrigerant channel on the direct cooling plate effectively reduces the overall height of the battery housing, thereby increasing the volumetric packing ratio of the battery housing.

[0039] A second aspect of this application provides a vehicle. The vehicle includes the battery housing described above.

[0040] 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.

[0041] This application provides a battery box and a vehicle. By incorporating a direct cooling plate within the battery box, the cooling effect and integration are high, and the overall structural strength is also high. Furthermore, the height of the refrigerant channels for refrigerant flow through the direct cooling plate is low, effectively reducing the overall height of the battery box and increasing its volumetric packing ratio. The specific structure of the battery box and vehicle provided in this application embodiment will be described below with reference to the accompanying drawings.

[0042] refer to Figure 1This application provides a battery housing 100 in a first aspect. The battery housing 100 may include battery modules (not shown), a housing frame 200, and a direct cooling plate 300. In one possible implementation, the number of battery modules can be several; this application does not limit the number of battery modules. In this application embodiment, several battery modules can be located within the housing frame 200, and the direct cooling plate 300 can be located at the bottom of the housing frame 200, thereby allowing the direct cooling plate 300 to cool or heat the battery modules, thus enabling temperature changes in the battery modules through the direct cooling plate 300.

[0043] refer to Figure 1 as well as Figure 2 Based on the above embodiments, in one possible implementation, the direct cooling plate 300 may have a refrigerant channel 310. It is understood that the refrigerant channel 310 allows refrigerant to flow, thereby facilitating the cooling or heating of the battery module by the refrigerant.

[0044] Based on the above embodiments, in one possible implementation, the height of the refrigerant channel 310 can range from 0 to 2.8 mm. In this embodiment, for example, the height of the refrigerant channel 310 can be 2.8 mm. It is understood that the flow channel height in the liquid cooling plate used in related technologies can be 4.6-5 mm. Compared to the liquid cooling plate in related technologies, the height of the refrigerant channel 310 in the direct cooling plate 300 provided in this embodiment is lower than the height of the liquid cooling plate. This effectively reduces the overall height of the battery housing 100, thereby increasing the volumetric packing ratio of the battery housing 100.

[0045] Based on the above embodiments, it can be understood that the radial dimension of the refrigerant channel 310 of the direct cooling plate 300 provided in this application embodiment can be set smaller than that of the liquid cooling plate in the related art, so that the radial dimension of the refrigerant channel 310 in the direct cooling plate 300 is smaller than the radial dimension of the flow channel of the liquid cooling plate. In this way, the volumetric packing ratio of the battery box 100 can be further improved.

[0046] Continue to refer to Figure 2 Based on the above embodiments, the direct cooling plate 300 may further include a substrate 320 and a flow channel plate 330. The substrate 320 and the flow channel plate 330 may be stacked in the height direction of the direct cooling plate 300. In this embodiment, the substrate 320 may be located above the flow channel plate 330, and the substrate 320 and the flow channel plate 330 may be fixedly connected. It is understood that a refrigerant channel 310 for refrigerant flow may be formed between the substrate 320 and the flow channel plate 330.

[0047] Continue to refer to Figure 2Based on the above embodiments, a flow channel plate 330 may have a flow channel groove 331 on the side facing the substrate 320. In one possible implementation, a refrigerant channel 310 may be formed between the inner wall of the flow channel groove 331 and at least a portion of the inner surface of the substrate 320. This application does not limit the shape and number of the flow channel groove 331.

[0048] Based on the above embodiments, the direct cooling plate 300 may include an inlet connector and an outlet connector (not shown in the figure). In one possible implementation, both the inlet connector and the outlet connector may be located at one end of the substrate 320. In this embodiment, both the inlet connector and the outlet connector may be connected to the refrigerant channel 310. Thus, the refrigerant can enter the direct cooling plate 300 through the inlet connector and along the refrigerant channel 310, and then flow out through the outlet connector, thereby allowing the refrigerant to flow in the refrigerant channel 310 and cool or heat the battery module.

[0049] Based on the above embodiments, the flow channel plate 330 may further have an inlet end and an outlet end (not shown in the figure). The inlet end can be connected to an inlet connector, and correspondingly, the outlet end can be connected to an outlet connector. It is understood that both the inlet end and the outlet end can be connected to the refrigerant channel 310. In this way, the refrigerant can enter the refrigerant channel 310 through the inlet connector and along the inlet end, and then flow out along the outlet end and through the outlet connector.

[0050] Continue to refer to Figure 1 as well as Figure 2 Based on the above embodiments, at least a portion of the housing frame 200 may enclose an installation space 210. It is understood that the installation space 210 can be used to house several electrical components. In one possible implementation, the installation space 210 may be located at one end of the housing frame 200, and several electrical components may be housed within the installation space 210, thereby facilitating the electrical components to ensure the safety and reliability of the battery housing 100.

[0051] Continue to refer to Figure 1 Based on the above embodiments, the battery housing 100 may further include a lifting lug structure 400. In one possible implementation, the number of lifting lug structures 400 can be several; this application embodiment does not limit the number of lifting lug structures 400. In this application embodiment, several lifting lug structures 400 can be fixedly connected to the housing frame 200. It is understood that the lifting lug structures 400 can be used for hoisting the battery housing 100.

[0052] Based on the above embodiments, the battery housing 100 may further include a bottom protective plate (not shown in the figure). The bottom protective plate may be located below the direct cooling plate 300, and its outer periphery may be fixedly connected to the housing frame 200. It is understood that the bottom protective plate can support the battery housing 100, thereby providing a certain degree of protection. In one possible implementation, the bottom protective plate may be made of steel and may be manufactured using a stamping process, resulting in high strength. In this embodiment, the outer periphery of the bottom protective plate may be screwed to the housing frame 200 using rivet nuts; this embodiment is not limited thereto.

[0053] Based on the above embodiments, in one possible implementation, the box frame 200 can be made of steel. In this embodiment, the box frame 200 can be manufactured by roll forming and then welded together as a whole. It is understood that the box frame 200 made of steel has high strength and other characteristics. In addition, the box frame 200 and the cold plate 300 can be fixedly connected by flange riveting, which is not limited in this embodiment.

[0054] This application provides a vehicle (not shown in the figures) in a second aspect. The vehicle may include the battery housing 100 described above.

[0055] Based on the above embodiments, the vehicle may further include an air conditioning system (not shown in the figure). The air conditioning system can be connected to the direct cooling plate 300 of the battery housing 100. It is understood that by connecting the air conditioning system to the direct cooling plate 300 in the battery housing 100, the refrigerant in the air conditioning system can be directly supplied to the direct cooling plate 300 of the battery housing 100, thereby saving overall vehicle costs.

[0056] Understandably, in some embodiments, for high-speed and overspeed driving conditions, compared to liquid cooling solutions in related technologies, the battery housing 100 provided in this application, using a direct cooling plate 300, reduces the battery module temperature by approximately 10%. For driving durability driving conditions, compared to liquid cooling solutions in related technologies, the battery housing 100 provided in this application, using a direct cooling plate 300, reduces the temperature by approximately 16%. Correspondingly, the temperature uniformity of the battery module is also improved. Under the same operating conditions, the cooling performance of the battery module after adopting a direct cooling plate 300 in the battery housing 100 provided in this application is superior to that of liquid cooling solutions in related technologies.

[0057] In this embodiment, the battery housing 100 provided in this application can accommodate the direct cooling plate 300 within the battery housing 100, resulting in high cooling efficiency and integration, as well as high overall structural strength. Furthermore, the coolant channel 310 of the direct cooling plate 300, which allows for coolant flow, has a low height, effectively reducing the overall height of the battery housing 100 and increasing its volumetric packing efficiency.

[0058] 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.

[0059] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, 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.

[0060] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0061] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0062] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0063] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A battery housing, characterized in that, include: Battery module; A housing frame, in which the battery module is located; A direct cooling plate is located at the bottom of the housing frame and has a refrigerant channel for refrigerant flow, the height of which ranges from 0 to 2.8 mm.

2. The battery housing according to claim 1, characterized in that, The direct cooling plate includes a substrate and a flow channel plate stacked together; The substrate and the flow channel plate form a refrigerant channel for refrigerant flow.

3. The battery housing according to claim 2, characterized in that, The flow channel plate has a flow channel groove on the side facing the substrate; The inner wall of the flow channel and at least a portion of the inner surface of the substrate form the refrigerant channel.

4. The battery housing according to claim 3, characterized in that, The direct cooling plate includes an inlet connector and an outlet connector, both of which are located at one end of the substrate. The refrigerant enters the direct cooling plate through the inlet connector along the refrigerant channel and flows out through the outlet connector.

5. The battery housing according to claim 4, characterized in that, The flow channel plate has an inlet end and an outlet end, the inlet end is connected to the inlet connector, and the outlet end is connected to the outlet connector; Both the inlet and the outlet are connected to the refrigerant channel.

6. The battery housing according to any one of claims 1-5, characterized in that, At least a portion of the enclosure frame encloses an installation space for housing several electrical components.

7. The battery housing according to any one of claims 1-5, characterized in that, Also includes: Several lifting lug structures are fixedly connected to the housing frame, and the lifting lug structures are used for hoisting the battery housing.

8. The battery housing according to any one of claims 1-5, characterized in that, Also includes: Bottom guard plate; The bottom protective plate is located below the direct cooling plate and is used to support the battery box.

9. A vehicle, characterized in that, The battery housing includes any one of claims 1-8.

10. The vehicle according to claim 9, characterized in that, The vehicle also includes: an air conditioning system; The air conditioning system and the direct cooling plate of the battery box are connected.

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