Liquid cooling plate

Abstract

The utility model provides a liquid cooling plate, which comprises a plane plate, a runner plate, a liquid inlet joint and a liquid outlet joint, the runner plate is arranged below the plane plate, the runner plate comprises a downwards sunken runner part and an attaching part attached to the plane plate, the runner part and the plane plate form a cooling runner, the liquid inlet joint is arranged below the runner plate, and the liquid outlet joint is arranged below the runner plate. The liquid inlet connector is communicated with the cooling flow channel, and the liquid outlet connector is arranged below the flow channel plate and communicated with the cooling flow channel. According to the utility model, the liquid inlet joint and the liquid outlet joint are directly fixed on the liquid cooling plate, so that the liquid inlet joint and the liquid outlet joint are positioned outside the battery pack box body, the liquid inlet joint and the liquid outlet joint do not interfere with the installation of batteries in the battery pack box body, and meanwhile, the influence of cooling liquid leakage caused by weld joint failure on the battery module is effectively prevented, and the system safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries and energy storage, in particular to a liquid cooling plate. Background Art

[0002] With the continuous development of the automotive industry, gasoline or diesel-powered vehicles are gradually being replaced by electric vehicles. As the energy storage device of electric vehicles and the sole power source for driving them, the safety factor of the battery is of paramount importance.

[0003] Currently, electric vehicle battery packs typically include batteries and a liquid cooling plate, which is placed on the cooling plate for cooling. In existing technology, the cooling plate's water inlet and outlet connectors are typically located inside the battery pack, specifically on the flat plate where the batteries are mounted. However, if a leak develops in this configuration, it can negatively impact the safety of the battery pack and the vehicle as a whole, posing a significant safety risk.

[0004] Therefore, it is necessary to provide a liquid cooling plate to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of the utility model is to provide a liquid cooling plate.

[0006] According to one aspect of the present invention, a liquid cooling plate is provided, comprising:

[0007] flat panels;

[0008] A flow channel plate, the flow channel plate is arranged below the plane plate, the flow channel plate includes a downwardly concave flow channel portion and a fitting portion fitted with the plane, the flow channel portion and the plane plate forming a cooling flow channel;

[0009] A liquid inlet connector, the liquid inlet connector being arranged below the flow channel plate and communicating with the cooling flow channel;

[0010] A liquid outlet joint is provided below the flow channel plate and is communicated with the cooling flow channel.

[0011] Preferably, the liquid inlet joint and the liquid outlet joint are both fixed to the flow channel portion, the flow channel portion is provided with a first connecting hole and a second connecting hole, the liquid inlet joint is provided in the first connecting hole, and the liquid outlet joint is provided in the second connecting hole.

[0012] Preferably, the liquid inlet joint includes a connection block fixed to the flow channel plate and a pipe joint fixed to the connection block.

[0013] Preferably, the connecting block includes a built-in cavity, a first flow port communicating with the built-in cavity and the cooling channel, and a second flow port communicating with the built-in cavity and the pipe joint.

[0014] Preferably, a first positioning and mounting rib is provided on the circumferential edge of the first flow opening, and the first positioning and mounting rib is protruded from the surface of the connecting block toward the first connecting hole and is located in the first connecting hole.

[0015] Preferably, a first step surface is provided at the connection between the second flow port and the built-in cavity, and the pipe joint includes a mounting plate provided at its end and a second positioning mounting ridge protruding from the mounting plate toward the first step surface, and the second positioning mounting ridge is provided in the second flow port and abuts against the first step surface.

[0016] Preferably, a transition surface is provided between the first step surface and the built-in cavity, and the transition surface is configured to contract in a funnel shape from the second flow opening toward the built-in cavity.

[0017] Preferably, the built-in cavity of the connection block includes a first cavity and a second cavity arranged perpendicular to each other, the first flow port is communicated with the first cavity, and the second flow port is communicated with the second cavity.

[0018] Preferably, the liquid outlet joint has the same structure as the liquid inlet joint, and the installation method of the liquid outlet joint and the liquid cooling plate is the same as the installation method of the liquid inlet joint and the liquid cooling plate.

[0019] Preferably, the cooling channel includes a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are located on the same side of the channel plate, the first connecting hole is provided in the liquid inlet, and the second connecting hole is provided in the liquid outlet.

[0020] Compared with the prior art, the liquid cooling plate provided by the present invention has the following beneficial effects:

[0021] Due to the adoption of the above technical solution, the utility model has the advantages of simple structure, ingenious design and low cost. By directly fixing the liquid inlet joint and the liquid outlet joint on the liquid cooling plate, the liquid inlet and outlet joints are located outside the battery pack case, and the liquid inlet and outlet joints will not interfere with the installation of batteries in the battery pack case. At the same time, it also effectively prevents the influence of coolant leakage caused by weld failure on the battery module, thereby improving the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 A three-dimensional diagram of the liquid cooling plate of the present invention;

[0024] Figure 2This is an exploded view of the liquid cooling plate of the present invention;

[0025] Figure 3 This is a front view of the liquid cooling plate of the present invention;

[0026] Figure 4 for Figure 3 The cross-sectional view of the AA surface;

[0027] Figure 5 This is an exploded view of the liquid inlet connector of the present invention.

[0028] Among them, 1. plane plate, 2. flow channel plate, 21. flow channel part, 22. fitting part, 23. first connecting hole, 24. second connecting hole, 3. liquid inlet joint, 31. connecting block, 311. built-in cavity, 3111. first cavity, 3112. second cavity, 312. first flow port, 313. second flow port, 314. first positioning mounting edge, 315. first step surface, 316. transition surface, 317. second step portion, 318. raised fixing portion, 32. pipe joint, 321. round tube body, 322. mounting plate, 323. second positioning mounting edge, 324. first step portion, 4. liquid outlet joint, 5. avoidance port, 61. liquid inlet, 62. liquid outlet. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0031] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0032] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0033] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0035] See also Figure 1 and Figure 2 This embodiment discloses a liquid cooling plate, comprising a planar plate 1, a flow channel plate 2, a liquid inlet connector 3, and a liquid outlet connector 4. The flow channel plate 2 includes a downwardly recessed flow channel portion 21 and a bonding portion 22 bonded to the planar plate 1. The flow channel portion 21 and the planar plate 1 form a cooling channel. The liquid inlet connector 3 and the liquid outlet connector 4 are both disposed on the side of the flow channel plate 2, i.e., below the flow channel plate 2 and are both fixed to the flow channel portion 21. At the same time, the liquid inlet connector 3 and the liquid outlet connector 4 are both connected to the cooling channel.

[0036] The flow channel portion 21 is provided with a first connection hole 23 and a second connection hole 24. The liquid inlet connector 3 is located in the first connection hole 23, and the liquid outlet connector 4 is located in the second connection hole 24. The cooling flow channel includes a liquid inlet portion 61 and a liquid outlet portion 62, which are located on the same side of the flow channel plate 2. The first connection hole 23 is located in the liquid inlet portion 61, and the second connection hole 24 is located in the liquid outlet portion 62.

[0037] The batteries in the battery pack are usually placed in a liquid cooling box, which includes a liquid cooling plate and a box body covered on the liquid cooling plate. The batteries are placed on the flat plate of the liquid cooling plate so that the batteries can be cooled by the liquid cooling plate. The liquid inlet connector 3 and the liquid outlet connector 4 are located on the side of the flow channel plate, that is, on the outside of the battery pack box body, which can avoid the risk of coolant leakage caused by failure of the weld between the connector and the flat plate 1 and improper insertion and removal of connectors in the connector and the liquid cooling pipeline, thereby leading to battery leakage. In this embodiment, even if liquid leakage occurs at the joint, the leaked liquid will only exist on the outside of the battery pack box body and will not affect the batteries in the box body, which can greatly improve safety. At the same time, it also simplifies the liquid cooling circuit, reduces liquid cooling parts, and reduces costs.

[0038] See also Figure 3 、 Figure 4 and Figure 5 The liquid inlet connector 3 includes a connecting block 31 fixed to the flow channel plate 2 and a pipe connector 32 fixed to the connecting block 31. The connecting block 31 includes a built-in cavity 311, a first flow port 312 connecting the built-in cavity 311 with the cooling flow channel, and a second flow port 313 connecting the built-in cavity 311 with the pipe connector 32. The built-in cavity 311 includes a first cavity 3111 and a second cavity 3112 arranged perpendicular to each other, the first flow port 312 is connected to the first cavity 3111, and the second flow port 313 is connected to the second cavity 3112. In other embodiments, the setting position of the first cavity 3111 and the second cavity 3112 is not limited to a vertical setting, and the positional relationship between the first cavity 3111 and the second cavity 3112 can be designed according to actual installation requirements.

[0039] The first flow opening 312 has a first positioning rib 314 on its circumferential edge. The first positioning rib 314 protrudes from the surface of the connecting block 31 toward the first connecting hole 23 and is located in the first connecting hole 23. The connecting block 31 and the flow channel plate 2 are fixed by welding.

[0040] A first stepped surface 315 is defined at the junction of the second flow opening 313 and the internal cavity 311. The pipe joint 32 includes a circular tubular body 321, a mounting plate 322 disposed at the end of the circular tubular body 321, and a second positioning ridge 323 projecting from the mounting plate 322 toward the first stepped surface 315. The second positioning ridge 323 is located within the second flow opening 313 and abuts against the first stepped surface 315.

[0041] The periphery of the second positioning and mounting ridge 323 and the mounting plate 322 form a recessed first step 324. The periphery of the opening side of the second flow opening 313 is provided with a raised second step 317 adapted to the first step 324. The first step 324 and the second step 317 are fixed by welding.

[0042] A transition surface 316 is provided between the first step surface 315 and the built-in cavity 311. The transition surface 316 is an inclined surface, which is funnel-shaped and shrinks from the second flow port 313 to the built-in cavity 311. A raised fixing portion 318 is provided on the side of the connecting block 31 close to the pipe joint 32. The raised fixing portion 318 protrudes from the connecting block 31 in the direction of the flow channel plate 2 and is welded and fixed to the flow channel plate 2. A avoidance opening 5 is provided on the corresponding connecting block on the side of the liquid cooling plate where the connecting block 31 is located, so as to avoid interference with the installation of the connecting block 31 when it is installed. The liquid outlet joint 4 has the same structure as the liquid inlet joint 3, and the installation method of the liquid outlet joint 4 and the liquid cooling plate is the same as the installation method of the liquid inlet joint 3 and the liquid cooling plate.

[0043] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. A liquid cooling plate, characterized in that: include: Flat panels; A flow channel plate, the flow channel plate is arranged below the plane plate, the flow channel plate comprises a flow channel portion recessed downward and a fitting portion fitted with the plane, the flow channel portion and the plane plate form a cooling flow channel; A liquid inlet joint, which is arranged below the flow channel plate and communicates with the cooling flow channel; A liquid outlet joint, wherein the liquid outlet joint is arranged below the flow channel plate and is communicated with the cooling flow channel.

2. The liquid cooling plate according to claim 1, characterized in that: The liquid inlet joint and the liquid outlet joint are both fixed to the flow channel portion, the flow channel portion is provided with a first connecting hole and a second connecting hole, the liquid inlet joint is arranged in the first connecting hole, and the liquid outlet joint is arranged in the second connecting hole.

3. The liquid cooling plate according to claim 2, characterized in that: The liquid inlet joint comprises a connection block fixed to the flow channel plate and a pipe joint fixed to the connection block.

4. The liquid cooling plate according to claim 3, characterized in that: The connection block comprises a built-in cavity, a first flow port communicating with the built-in cavity and a cooling channel, and a second flow port communicating with the built-in cavity and a pipe joint.

5. The liquid cooling plate according to claim 4, characterized in that: A first positioning and mounting ridge is disposed on the circumferential edge of the first flow opening. The first positioning and mounting ridge is protruded from the surface of the connection block toward the first connection hole and is located in the first connection hole.

6. The liquid cooling plate according to claim 5, characterized in that: A first step surface is provided at the connection between the second flow port and the built-in cavity. The pipe joint includes a mounting plate arranged at its end and a second positioning mounting edge protruding from the mounting plate toward the first step surface. The second positioning mounting edge is arranged in the second flow port and abuts against the first step surface.

7. The liquid cooling plate according to claim 6, characterized in that: A transition surface is provided between the first step surface and the built-in cavity, and the transition surface is contracted in a funnel shape from the second flow opening toward the built-in cavity.

8. The liquid cooling plate according to claim 7, characterized in that: The built-in cavity of the connection block includes a first cavity and a second cavity which are vertically arranged to each other, the first flow port is communicated with the first cavity, and the second flow port is communicated with the second cavity.

9. The liquid cooling plate according to claim 8, characterized in that: The liquid outlet joint has the same structure as the liquid inlet joint, and the installation method of the liquid outlet joint and the liquid cooling plate is the same as the installation method of the liquid inlet joint and the liquid cooling plate.

10. The liquid cooling plate according to claim 9, characterized in that: The cooling channel includes a liquid inlet and a liquid outlet, wherein the liquid inlet and the liquid outlet are located on the same side of the channel plate, the first connecting hole is arranged at the liquid inlet, and the second connecting hole is arranged at the liquid outlet.

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