Non-metal parallel liquid-cooled battery box body

Abstract

The utility model discloses a non-metal parallel liquid-cooled battery box body, which comprises a battery box upper cover, a battery box base and at least two groups of inverted T-shaped cooling plates arranged and fixed on the top surface of the battery box base, and each inverted T-shaped cooling plate comprises a vertically arranged runner plate and a fixed plate transversely fixed at the bottom of the runner plate, cooling runners are arranged in the runner plates, the cooling runners of the runner plates are connected in parallel, and a plurality of groups of tenon joints which are meshed and fixed with a battery box base are arranged on the bottom surface of the fixed plate; a battery module of the battery box is fixed between the two adjacent runner plates and is positioned on the top surfaces of the two opposite fixed plates. The inverted T-shaped cooling plate is mounted in the battery box, so that the strength of the liquid cooling plate is improved under the condition that the cooling effect is not influenced, higher supporting force is provided during Y-direction extrusion, a cooling effect and a supporting effect can be achieved, the inverted T-shaped cooling plate and the periphery of the box body are connected together to form a whole, and the structural strength of the whole box body is improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, specifically to a non-metallic parallel liquid-cooled battery housing, which is suitable for electric vehicles, energy storage systems and other scenarios. Background Technology

[0002] Traditional non-metallic power battery casings, besides having their central area occupied by the battery and difficult to support with reinforcement structures, often have internal liquid cooling plates that are bare at the bottom, resulting in the following drawbacks:

[0003] (1) Insufficient structural strength: It is easily deformed under vertical compression, requiring additional reinforcement, which increases weight and cost;

[0004] (2) Defects in connection method: Due to the different materials of the battery box, welding or bolt connection can easily affect the airtightness of the box and make it difficult to disperse shear force;

[0005] (3) Bottom deformation problem: The weight of the battery pack causes the bottom to bend, which requires thickening or using high-rigidity materials, increasing the cost and overall weight.

[0006] Therefore, there is an urgent need for a battery box design that balances heat dissipation efficiency, structural strength, and lightweight design. Utility Model Content

[0007] This utility model provides a novel non-metallic parallel liquid-cooled battery housing, which combines an aluminum inverted T-shaped cooling plate with an SMC housing, thus solving the strength, airtightness, and cost problems of traditional designs.

[0008] To achieve the above objectives, this utility model is specifically implemented through the following technical solution:

[0009] A non-metallic parallel liquid-cooled battery box includes a battery box cover, a battery box base, and at least two sets of inverted T-shaped cooling plates arranged and fixed on the top surface of the battery box base. The inverted T-shaped cooling plates include vertically arranged flow channel plates and horizontally fixed plates at the bottom of the flow channel plates. Cooling channels are arranged inside the flow channel plates, and the cooling channels of each flow channel plate are connected in parallel. The bottom surface of the fixed plates is provided with multiple sets of tenon joints that engage and fix with the battery box base. The battery modules of the battery box are fixed between two adjacent flow channel plates and located on the top surface of two opposite fixed plates.

[0010] Furthermore, the tenon joints are evenly spaced on the bottom surface of the fixed plate.

[0011] Furthermore, the tenon joint is dovetail-shaped.

[0012] Furthermore, the lateral width of the fixed plate is smaller than the arrangement distance of the inverted T-shaped cooling plates.

[0013] Furthermore, the battery box cover and battery box base are made of SMC composite material.

[0014] Furthermore, the inverted T-shaped cooling plate is made of aluminum alloy.

[0015] Compared with existing technologies, the battery box of this invention features an inverted T-shaped cooling plate installed inside. This increases the strength of the liquid cooling plate itself without affecting the cooling effect, providing greater support during Y-axis compression. Furthermore, the liquid cooling plate can offset some of the battery's weight in the Z-axis support, significantly improving the flatness of the battery pack bottom. It serves both cooling and support functions, and is integrated with the surrounding body to form a unified structure, enhancing the overall structural strength of the box. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the battery box of this utility model;

[0017] Figure 2 This is a cross-sectional view of the connection between the inverted T-shaped cooling plate and the battery box base;

[0018] Figure 3 This is a schematic diagram of the front structure of the inverted T-shaped cooling plate in this utility model.

[0019] In the diagram, 1-battery box top cover; 2-battery box base; 3-inverted T-shaped cooling plate; 31-flow channel plate; 32-fixing plate; 33-cooling flow channel; 34-tenon joint; 4-battery module; 5-cooling main pipe. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0022] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0023] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] like Figures 1 to 3 As shown, this utility model discloses a non-metallic parallel liquid-cooled battery box, including a battery box cover 1, a battery box base 2, and at least two sets of inverted T-shaped cooling plates 3 arranged and fixed on the top surface of the battery box base 2. Each inverted T-shaped cooling plate 3 includes a vertically arranged flow channel plate 31 and a horizontally fixed fixing plate 32 at the bottom of the flow channel plate 31. Preferably, they are symmetrically fixed, with the two sides of the fixing plate 32 extending out to the same dimension, resulting in symmetrical force distribution. Cooling channels 33 are provided within the flow channel plate 31, and the cooling channels 33 of each flow channel plate 31 are horizontally connected in parallel, meaning that each set of inverted T-shaped cooling plates is connected to a cooling main pipe 5, forming a parallel connection.

[0026] The bottom surface of the fixing plate 32 is provided with multiple sets of tenon joints 34 that engage and fix with the battery box base 2. The bottom surface of the fixing plate 32 is engaged and fixed with the bottom surface of the battery box base 2 through the tenon joints 34. After the fixing connection is completed, the top surface of the fixing plate 32 is preferably flush with the top surface of the battery box base 2, so that the top surface of the battery box base 2 is flat, which is beneficial to the safety of the battery module 4.

[0027] The battery module 4 of the battery box is fixed between two adjacent flow channel plates 31 and located on the top surface of two opposing fixed plates 32. The flow channel plates 31 form cooling on the side wall of the battery module 4, and the battery module 4 is pressed on the fixed plate 32.

[0028] Preferably, the tenon joints 34 are evenly spaced on the bottom surface of the fixing plate 32, and the top surface of the battery box base 2 is provided with tenon grooves 21 that mate with the tenon joints 34. The inverted T-shaped cooling plates 3 can be integrally formed and connected when the battery box base 2 is formed, or they can be snap-fitted together when they are formed separately.

[0029] Preferably, the tenon joint 34 is dovetail-shaped. The tooth depth of the tenon joint 34 can be 0.5-2cm, and the tooth spacing can be 1-3cm, which can be adjusted according to the actual battery box size.

[0030] Preferably, the lateral width of the fixing plate 32 is smaller than the arrangement distance of the inverted T-shaped cooling plates 3, and the arrangement spacing of the inverted T-shaped cooling plates 3 is slightly larger than the size of a single battery module 4, so that the battery module 4 can be installed between two inverted T-shaped cooling plates 3; the fixing plates 32 of two adjacent inverted T-shaped cooling plates 3 do not overlap, which is conducive to the flatness of the bottom surface, and the aluminum alloy fixing plate 32 can further conduct heat and dissipate heat for the bottom surface of the battery module 4.

[0031] Preferably, the battery box cover 1 and the battery box base 2 are made of SMC composite material, which has the advantages of being lightweight, high-strength, and easy to form; preferably, the inverted T-shaped cooling plate is made of aluminum alloy, and the flow channel plate 31 and the fixing plate 32 are integrally formed, which has the advantages of high thermal conductivity and is conducive to rapid heat dissipation.

[0032] One embodiment of this utility model is a liquid cooling system applied to a battery box. The inverted T-shaped cooling plate includes a flow channel plate 31 vertically installed inside the battery box base 2 and a fixing plate 32 at the bottom that contacts and is fixed to the battery box base. The flow channel plate 31 is attached to both sides of the battery module 4, and the fixing plate 32 is pressed under the battery module 4 to form a stable fixation. The bottom surface of the fixing plate 32 that contacts the box body is made of tenon joints 34, which can be made into an inverted dovetail shape. The tenon joints 34 are evenly spaced. The formed inverted T-shaped cooling plate is placed into an SMC mold and integrally formed and fixed with the SMC battery box base 2. After forming, the tenon joints 34 of the battery box base 2 and the inverted T-shaped cooling plate interlock with each other to prevent the fixing plate 32 from coming off upward. The spaced tenon joints 34, after being integrally formed with the SMC battery box base 2, help to disperse the destructive shear force generated by the downward bending deformation of the box body under Z-axis gravity load.

[0033] The specific embodiments described herein are merely illustrative of the invention and are not intended to limit it. Those skilled in the art can make modifications to these embodiments without contributing any inventive step after reading this specification, but such modifications are protected by patent law as long as they fall within the scope of the claims of this invention.

Claims

1. A non-metallic parallel liquid-cooled battery box, characterized in that, The battery box includes a top cover (1), a base (2), and at least two sets of inverted T-shaped cooling plates (3) arranged and fixed on the top surface of the base. The inverted T-shaped cooling plates include vertically arranged flow channel plates (31) and horizontally fixed plates (32) at the bottom of the flow channel plates. Cooling channels (33) are provided in the flow channel plates. The cooling channels of each flow channel plate are connected in parallel. The bottom surface of the fixed plate is provided with multiple sets of tenon joints (34) that engage and fix with the base of the battery box. The battery module (4) of the battery box is fixed between two adjacent flow channel plates and located on the top surface of two opposite fixed plates.

2. The non-metallic parallel liquid-cooled battery pack enclosure of claim 1, wherein, The tenon joints are evenly spaced on the bottom surface of the fixed plate.

3. The non-metallic parallel liquid-cooled battery pack enclosure of claim 2, wherein, The tenon joint is dovetail shaped.

4. The non-metallic parallel liquid-cooled battery pack enclosure of claim 1, wherein, The lateral width of the fixed plate is less than the spacing between the inverted T-shaped cooling plates.

5. The non-metallic parallel liquid-cooled battery pack enclosure of claim 1, wherein, The battery box cover and battery box base are made of SMC composite material.

6. The non-metallic parallel liquid-cooled battery pack enclosure of claim 1, wherein, The inverted T-shaped cooling plate is made of aluminum alloy.

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