A cold plate for multi-cavity multi-dielectric thermal management of power batteries

Abstract

This invention discloses a multi-cavity, multi-medium thermal management cold plate for power batteries, belonging to the field of battery thermal management technology. To address the problem that using direct cooling or liquid cooling methods to heat and cool battery packs cannot simultaneously control costs, ensure good temperature uniformity, and achieve effective heating and cooling, thus failing to meet market demands and resulting in a poor user experience, the invention includes a double-flow-channel stamping plate and an upper pressure plate welded to one outer wall of the double-flow-channel stamping plate. A lower pressure plate is welded to the other outer wall of the double-flow-channel stamping plate. A pair of first connecting pipes are fixedly installed on the outer wall of one end of the upper pressure plate, and a pair of second connecting pipes are fixedly installed on the outer wall of one end of the lower pressure plate. This invention not only improves the efficiency of cell heating or cooling but also reduces the cost of battery pack components.

Description

Technical Field

[0001] This invention relates to the field of battery thermal management technology, specifically to a cold plate for multi-cavity, multi-medium thermal management of power batteries. Background Technology

[0002] The new energy vehicle market is developing rapidly. With increasing mileage and performance requirements for new energy vehicles, the heat dissipation of the large energy-consuming batteries has become particularly important. Currently, the ideal solutions for battery pack thermal management are liquid cooling and direct cooling. Direct cooling offers significantly better heating and cooling effects than liquid cooling, but it suffers from poorer temperature uniformity, lower strength, and requires a high-power compressor. Liquid cooling plates offer poor heating and cooling effects, but provide better temperature uniformity, higher strength, and easier weight reduction. Currently, using either direct or liquid cooling for battery pack heating and cooling cannot simultaneously control costs, ensure good temperature uniformity, and achieve optimal heating and cooling effects, making it difficult to meet market demands and resulting in a poor user experience.

[0003] To address the above issues, a cold plate based on multi-cavity, multi-medium thermal management of power batteries is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-cavity, multi-medium thermal management cold plate for power batteries. By using this device, the problems mentioned above, such as the inability to simultaneously control costs, ensure good temperature uniformity, and achieve good heating and cooling effects when using direct cooling or liquid cooling to heat and cool battery packs, are solved. These problems make it difficult to meet market demands and result in a poor user experience.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-cavity, multi-medium thermal management cold plate for power batteries, comprising a double-channel stamping plate and an upper pressure plate welded to one outer wall of the double-channel stamping plate, and a lower pressure plate welded to the other outer wall of the double-channel stamping plate. A pair of first connecting pipes are fixedly installed on the outer wall of one end of the upper pressure plate, and a pair of second connecting pipes are fixedly installed on the outer wall of one end of the lower pressure plate. The first and second connecting pipes are staggered, and the first connecting pipes are connected to the closed chamber between the double-channel stamping plate and the upper pressure plate, and the second connecting pipes are connected to the closed chamber between the double-channel stamping plate and the lower pressure plate. Cooling medium and cooled medium are respectively introduced into the inner cavities on both sides of the double-channel stamping plate. Several uniformly agitating members are installed in the inner cavities of the double-channel stamping plate, and the uniformly agitating members are used to stir the cooling medium and the cooled medium respectively.

[0006] Furthermore, a first closed annular groove is provided on one outer wall of the double-flow-channel stamping plate, and a second closed annular groove is provided on the other outer wall of the double-flow-channel stamping plate. Both the first and second closed annular grooves are U-shaped. The second closed annular groove is arranged around the outer periphery of the first closed annular groove. Several connecting holes are provided on the inner wall between the first and second closed annular grooves.

[0007] Furthermore, the first connecting pipe is connected to the first closed annular groove, and the second connecting pipe is connected to the second closed annular groove.

[0008] Furthermore, the uniform pushing component includes an electric telescopic rod and a compressed air telescopic rod respectively disposed at both ends of the electric telescopic rod. Both the electric telescopic rod and the compressed air telescopic rod are fixedly installed on the inner cavity sidewall of the first closed annular groove. Several pneumatic telescopic rods are fixedly installed on the inner cavity sidewall of the second closed annular groove. The pneumatic telescopic rods are respectively installed on one side of the compressed air telescopic rod. The pneumatic telescopic rods and the compressed air telescopic rods are connected through connecting holes. Agitators are fixedly installed at the output ends of the electric telescopic rod, the compressed air telescopic rod, and the pneumatic telescopic rods. The agitators located at the output ends of the electric telescopic rod and the compressed air telescopic rod are fixedly connected through connecting blocks.

[0009] Furthermore, the compressed air telescopic rod includes a compressed air cylinder and a first piston rod with one end sealed and slidably installed in the inner cavity of the compressed air cylinder.

[0010] Furthermore, a gas storage groove is provided on the middle outer wall of the front end of the air cylinder, and the gas storage groove is filled with inert gas. An air outlet is provided on the middle outer wall of the tail end of the air cylinder, and the two ends of the air outlet are respectively connected to the gas storage groove and the connecting hole. The first piston rod includes a piston body and an ejector slide rod fixedly installed on the middle outer wall of the front end of the piston body, and the piston body is sealed and slidably installed in the gas storage groove.

[0011] Furthermore, the pneumatic telescopic rod includes an air inlet cylinder and a second piston rod that is slidably installed in the inner cavity of the air inlet cylinder with one end sealed. An L-shaped vent pipe is fixedly installed on the outer wall of one side of the front end of the air inlet cylinder, and the tail end of the L-shaped vent pipe is fixedly installed on the inner side wall of the second closed annular groove. The L-shaped vent pipe is connected to the connecting hole.

[0012] Furthermore, an air intake groove is provided on the middle outer wall of the front end of the air intake cylinder, and an air intake side hole is provided on one side outer wall of the front end of the air intake cylinder. The air intake side hole is connected to the air intake groove, and the L-shaped vent pipe is connected to the air intake side hole. The composition and connection relationship of each structure in the second piston rod are the same as the composition and connection relationship of each structure in the first piston rod.

[0013] Furthermore, the stirring block includes an arc-shaped long block and several concave rotating frames installed on the back of the arc-shaped long block. A closing cover is movably installed on the concave rotating frames, and the front end of the arc-shaped long block is arc-shaped, while the back end of the arc-shaped long block is flat.

[0014] Furthermore, the arc-shaped long block is provided with several anti-blocking holes, and the closing cover is respectively set to cover the tail opening of the anti-blocking hole. The concave rotating frame includes a mounting base plate and mounting rings respectively fixedly installed at both ends of the top surface of the mounting base plate. The upper inner wall of the inner cavity of the mounting ring is provided with a fan-shaped limiting groove. The two outer sides of one end of the closing cover are respectively fixedly installed with rotating shafts, and the top of the outer periphery of the rotating shaft is fixedly installed with a fan-shaped limiting block. The rotating shafts are respectively movably installed in the mounting ring, and the fan-shaped limiting blocks are respectively set in the fan-shaped limiting groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the cooling medium and the medium to be cooled are respectively introduced into the inner cavities on both sides of the double-flow-channel stamping plate through the first connecting pipe and the second connecting pipe. Through the relative flow between the cooling medium and the medium to be cooled, the battery cell can be heated or cooled respectively, which not only improves the efficiency of heating or cooling the battery cell, but also reduces the cost of battery pack components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the lower pressure plate of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the double-flow-channel stamping plate of the present invention;

[0019] Figure 4 This is a schematic cross-sectional view of the double-flow-channel stamping plate of the present invention;

[0020] Figure 5 This is a schematic diagram of the connection structure between the compressed air telescopic rod and the pneumatic telescopic rod of the present invention;

[0021] Figure 6 This is a schematic diagram of the connection structure of the electric telescopic rod, the compressed air telescopic rod, the pneumatic telescopic rod, and the stirring block of the present invention.

[0022] Figure 7 This is a schematic cross-sectional view of the pneumatic telescopic rod of the present invention;

[0023] Figure 8 This is a schematic cross-sectional view of the pneumatic telescopic rod of the present invention;

[0024] Figure 9 This is a schematic cross-sectional view of the stirring block of the present invention;

[0025] Figure 10 This is a schematic cross-sectional view of the mounting ring of the present invention.

[0026] In the diagram: 1. Double-channel stamping plate; 11. First closed annular groove; 12. Second closed annular groove; 13. Connecting hole; 2. Upper pressure plate; 3. Lower pressure plate; 4. First connecting pipe; 5. Second connecting pipe; 6. Uniform pushing component; 61. Electric telescopic rod; 62. Compressed telescopic rod; 621. Compressed air cylinder; 6211. Air storage groove; 6212. Air outlet; 622. First piston rod; 6221. Piston body; 6222. Ejector slide rod; 63. 631. Pneumatic telescopic rod; 631. Air inlet cylinder; 6311. Air inlet groove; 6312. Air inlet side hole; 632. Second piston rod; 633. L-shaped vent pipe; 64. Stirring block; 641. Arc-shaped long block; 6411. Anti-blocking hole; 642. Concave rotating frame; 6421. Mounting base plate; 6422. Mounting ring; 6423. Fan-shaped limiting groove; 643. Closing cover; 6431. Rotating shaft; 6432. Fan-shaped limiting block; 65. Connecting block. Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] To address the technical issues that arise from using direct or liquid cooling methods to heat and cool battery packs, which cannot simultaneously control costs, ensure good temperature uniformity, and achieve effective heating and cooling, thus failing to meet market demands and resulting in a poor user experience, such as… Figures 1-4 As shown, the following preferred technical solutions are provided:

[0029] A multi-cavity, multi-medium thermal management cold plate for power batteries includes a double-channel stamping plate 1 and an upper pressure plate 2 welded to one outer wall of the double-channel stamping plate 1. A lower pressure plate 3 is welded to the other outer wall of the double-channel stamping plate 1. A pair of first connecting pipes 4 are fixedly installed on the outer wall of one end of the upper pressure plate 2, and a pair of second connecting pipes 5 are fixedly installed on the outer wall of one end of the lower pressure plate 3. The first connecting pipes 4 and the second connecting pipes 5 are staggered. The first connecting pipes 4 are connected to the closed chamber between the double-channel stamping plate 1 and the upper pressure plate 2, and the second connecting pipes 5 are connected to the closed chamber between the double-channel stamping plate 1 and the lower pressure plate 3. The cooling medium introduced into the double-channel stamping plate 1 and the medium being cooled can be coolant or refrigerant.

[0030] A first closed annular groove 11 is provided on one side of the outer wall of the double-flow-channel stamping plate 1, and a second closed annular groove 12 is provided on the other side of the outer wall of the double-flow-channel stamping plate 1. Both the first closed annular groove 11 and the second closed annular groove 12 are U-shaped, and the second closed annular groove 12 is arranged around the outer periphery of the first closed annular groove 11.

[0031] Specifically, the cooling medium and the medium being cooled are respectively introduced into the first closed annular groove 11 and the second closed annular groove 12 through the first connecting pipe 4 and the second connecting pipe 5. Through the relative flow between the cooling medium and the medium being cooled, the battery cell can be heated or cooled, which not only improves the efficiency of heating or cooling the battery cell, but also reduces the cost of battery pack components.

[0032] To address the technical problem of good cooling and heating effects in relative flow cooling between a cooling medium and a cooled medium, where the inner side of the cooling medium has a shorter distance between the two media and a thinner heat-conducting medium layer, while the outer side has a longer distance between the two media and a thicker heat-conducting medium layer, resulting in poor cooling and heating effects, such as... Figures 3-10 As shown, the following preferred technical solutions are provided:

[0033] Cooling medium and cooled medium are respectively introduced into the inner cavities on both sides of the double-channel stamping plate 1. Several uniform pushing members 6 are installed in the inner cavity of the double-channel stamping plate 1. The uniform pushing members 6 are used to stir the cooling medium and the cooled medium respectively. Several connecting holes 13 are provided on the inner wall between the first closed annular groove 11 and the second closed annular groove 12. The first connecting pipe 4 is connected to the first closed annular groove 11 respectively, and the second connecting pipe 5 is connected to the second closed annular groove 12 respectively.

[0034] The uniform pushing component 6 includes an electric telescopic rod 61 and a compressed air telescopic rod 62 respectively disposed at both ends of the electric telescopic rod 61. Both the electric telescopic rod 61 and the compressed air telescopic rod 62 are fixedly installed on the inner wall of the first closed annular groove 11. A plurality of pneumatic telescopic rods 63 are fixedly installed on the inner wall of the second closed annular groove 12, and the pneumatic telescopic rods 63 are respectively installed on one side of the compressed air telescopic rods 62. The pneumatic telescopic rods 63 and the compressed air telescopic rods 62 are connected through connecting holes 13. Agitating blocks 64 are fixedly installed at the output ends of the electric telescopic rod 61, the compressed air telescopic rod 62, and the pneumatic telescopic rods 63. The agitating blocks 64 located at the output ends of the electric telescopic rod 61 and the compressed air telescopic rod 62 are connected by connecting blocks 65. The compressed air telescopic rod 62 is fixedly connected and includes a compressed air cylinder 621 and a first piston rod 622, one end of which is slidably and sealed within the inner cavity of the compressed air cylinder 621. A gas storage groove 6211 is provided on the middle outer wall of the front end of the compressed air cylinder 621, and the gas storage groove 6211 is filled with inert gas. A gas outlet 6212 is provided on the middle outer wall of the rear end of the compressed air cylinder 621, and the two ends of the gas outlet 6212 are respectively connected to the gas storage groove 6211 and the connecting hole 13. The first piston rod 622 includes a piston body 6221 and a push-out slide rod 6222 fixedly installed on the middle outer wall of the front end of the piston body 6221. The piston body 6221 is slidably and sealed within the gas storage groove 6211, and the inert gas is filled within the piston body. An inert gas is placed between 6221 and the gas storage groove 6211 to reduce the influence of the external environment on the gas inside the compressed air telescopic rod 62, ensuring the telescopic effect of the compressed air telescopic rod 62 on the pneumatic telescopic rod 63 through air pressure. The pneumatic telescopic rod 63 includes an air inlet cylinder 631 and a second piston rod 632 with one end sealed and slidably installed in the inner cavity of the air inlet cylinder 631. A sealing ring is provided at the opening of the air inlet cylinder 631 to form a sealed chamber between the second piston rod 632 and the opening of the air inlet cylinder 631. An L-shaped vent pipe 633 is fixedly installed on one side of the outer wall of the front end of the air inlet cylinder 631, and the tail end of the L-shaped vent pipe 633 is fixedly installed on the inner cavity side wall of the second closed annular groove 12. The connecting hole 13 is connected. An air intake groove 6311 is provided on the middle outer wall of the front end of the air intake cylinder 631, and an air intake side hole 6312 is provided on one side outer wall of the front end of the air intake cylinder 631. The air intake side hole 6312 is connected to the air intake groove 6311, and the L-shaped air pipe 633 is connected to the air intake side hole 6312. The composition and connection relationship of each structure in the second piston rod 632 are the same as the composition and connection relationship of each structure in the first piston rod 622. The stirring block 64 includes an arc-shaped long block 641 and several concave rotating frames 642 installed on the back of the arc-shaped long block 641. A closing cover 643 is movably installed on the concave rotating frame 642, and the front end of the arc-shaped long block 641 is arc-shaped, while the back end of the arc-shaped long block 641 is flat.

[0035] Specifically, when the cooling medium and the cooled medium are respectively introduced into the first closed annular groove 11 and the second closed annular groove 12, the electric telescopic rod 61 can be activated. The electric telescopic rod 61 will drive the stirring block 64 to move back and forth, thereby stirring the cooling medium or the cooled medium in the first closed annular groove 11. Due to the shape of the stirring block 64, the cooling medium or the cooled medium on the outside can be continuously stirred to the inside. At the same time as the stirring block 64 moves back and forth, it will also drive the stirring block 64 located at the output end of the compressed air telescopic rod 62 to move back and forth under the transmission action of the connecting block 65. While agitating the cooling medium or the cooled medium over a large area, it can also drive the first piston rod 622 to continuously move. The inert gas in the gas storage groove 6211 is squeezed and then forced into the air inlet cylinder 631 through the connecting hole 13, the L-shaped vent pipe 633 and the air inlet side hole 6312. This pushes the second piston rod 632 to slide into the inner cavity of the air inlet cylinder 631, causing the pneumatic telescopic rod 63 to shorten along with the compressed telescopic rod 62. When the compressed telescopic rod 62 extends, the pneumatic telescopic rod 63 also extends under the action of air pressure. This allows the liquid in the first closed annular groove 11 and the second closed annular groove 12 to be agitated over a large area, ensuring that the liquid on both the inner and outer sides can be fully contacted and heated. This improves the heating and cooling effect while also ensuring production and usage costs.

[0036] The arc-shaped long block 641 is provided with a number of anti-blocking holes 6411, and the closing cover 643 is respectively covering the tail opening of the anti-blocking hole 6411. The concave rotating frame 642 includes a mounting base plate 6421 and mounting rings 6422 respectively fixedly installed at both ends of the top surface of the mounting base plate 6421. The upper inner wall of the inner cavity of the mounting ring 6422 is provided with a fan-shaped limiting groove 6423. The two sides of the closing cover 643 are respectively fixedly installed on the outer side. The top of the outer periphery of the rotating shaft 6431 is fixedly installed with a fan-shaped limiting block 6432. The rotating shaft 6431 is movably installed in the mounting ring 6422, and the fan-shaped limiting block 6432 is respectively set in the fan-shaped limiting groove 6423.

[0037] Specifically, when the stirring block 64 moves forward in the first closed annular groove 11 and the second closed annular groove 12 respectively, the closing cover 643 can be opened and rotated by less than 90 degrees under the impact of the liquid and the limiting effect of the sector-shaped limiting block 6432 and the sector-shaped limiting groove 6423, thereby connecting the anti-blocking hole 6411 and reducing the resistance brought by the liquid when the stirring block 64 moves forward, thus achieving the effect of saving electricity and energy. When the stirring block 64 moves backward in the first closed annular groove 11 and the second closed annular groove 12 respectively, due to the closing cover The opening angle of 643 is less than 90 degrees, so that the closing cover 643 automatically closes on the anti-blocking hole 6411 under the push of the liquid, thereby sealing the anti-blocking hole 6411. At this time, the stirring block 64 can continuously push the liquid to the partition layer between the inner cavity of the first closed ring groove 11 and the second closed ring groove 12 through the plane on the back side, thereby improving the heating and cooling effect. It cleverly utilizes the resistance brought by the liquid to the stirring block 64. The stirring block 64 can complete multiple effects at the same time when it moves back and forth. The structure is simple and easy to promote.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-cavity, multi-medium thermal management cold plate for power batteries, comprising a double-channel stamping plate (1) and an upper pressure plate (2) welded to the outer wall of one side of the double-channel stamping plate (1), and a lower pressure plate (3) welded to the outer wall of the other side of the double-channel stamping plate (1), characterized in that: A pair of first connecting pipes (4) are fixedly installed on the outer wall of one end of the upper pressure plate (2), and a pair of second connecting pipes (5) are fixedly installed on the outer wall of one end of the lower pressure plate (3). The first connecting pipes (4) and the second connecting pipes (5) are staggered. The first connecting pipes (4) are connected to the closed chamber between the double-flow channel stamping plate (1) and the upper pressure plate (2), and the second connecting pipes (5) are connected to the closed chamber between the double-flow channel stamping plate (1) and the lower pressure plate (3). Cooling medium and cooled medium are respectively introduced into the inner cavities on both sides of the double-channel stamping plate (1). Several uniform pushing members (6) are installed in the inner cavity of the double-channel stamping plate (1). The uniform pushing members (6) are used to stir the cooling medium and the cooled medium respectively. A first closed annular groove (11) is provided on one side of the outer wall of the double-flow-channel stamping plate (1), and a second closed annular groove (12) is provided on the other side of the outer wall of the double-flow-channel stamping plate (1). The first closed annular groove (11) and the second closed annular groove (12) are both U-shaped. The second closed annular groove (12) is arranged around the outer periphery of the first closed annular groove (11). A plurality of connecting holes (13) are provided on the inner wall between the first closed annular groove (11) and the second closed annular groove (12). The uniform pushing component (6) includes an electric telescopic rod (61) and a compressed air telescopic rod (62) respectively disposed at both ends of the electric telescopic rod (61). The electric telescopic rod (61) and the compressed air telescopic rod (62) are both fixedly installed on the inner side wall of the first closed annular groove (11). Several pneumatic telescopic rods (63) are fixedly installed on the inner side wall of the second closed annular groove (12). The pneumatic telescopic rods (63) are respectively installed on one side of the compressed air telescopic rod (62). The pneumatic telescopic rods (63) and the compressed air telescopic rods (62) are connected through a connecting hole (13). A stirring block (64) is fixedly installed at the output ends of the electric telescopic rod (61), the compressed air telescopic rod (62) and the pneumatic telescopic rod (63). The stirring blocks (64) located at the output ends of the electric telescopic rod (61) and the compressed air telescopic rod (62) are fixedly connected through a connecting block (65).

2. The cold plate for multi-cavity multi-medium thermal management of power batteries according to claim 1, characterized in that: The first connecting pipe (4) is connected to the first closed annular groove (11) respectively, and the second connecting pipe (5) is connected to the second closed annular groove (12) respectively.

3. The cold plate for multi-cavity multi-medium thermal management of power batteries according to claim 1, characterized in that: The compressed air telescopic rod (62) includes a compressed air cylinder (621) and a first piston rod (622) that is slidably installed in the inner cavity of the compressed air cylinder (621) with one end sealed.

4. A multi-cavity, multi-medium thermal management cold plate for power batteries according to claim 3, characterized in that: A gas storage groove (6211) is provided on the middle outer wall of the front end of the air compressor (621), and the gas storage groove (6211) is filled with inert gas. An air outlet (6212) is provided on the middle outer wall of the rear end of the air compressor (621), and the two ends of the air outlet (6212) are connected to the gas storage groove (6211) and the connecting hole (13) respectively. The first piston rod (622) includes a piston body (6221) and an ejector slide rod (6222) fixedly installed on the outer wall of the middle part of the front end of the piston body (6221), and the piston body (6221) is sealed and slidably installed in the gas storage groove (6211).

5. A multi-cavity, multi-medium thermal management cold plate for power batteries according to claim 4, characterized in that: The pneumatic telescopic rod (63) includes an air inlet cylinder (631) and a second piston rod (632) with one end sealed and slidably installed in the inner cavity of the air inlet cylinder (631). An L-shaped vent pipe (633) is fixedly installed on one side outer wall of the front end of the air inlet cylinder (631), and the tail end of the L-shaped vent pipe (633) is fixedly installed on the inner side wall of the second closed annular groove (12), and the L-shaped vent pipe (633) is connected to the connecting hole (13).

6. A cold plate for multi-cavity multi-medium thermal management of power batteries according to claim 5, characterized in that: An air intake groove (6311) is provided on the middle outer wall of the front end of the air intake cylinder (631), and an air intake side hole (6312) is provided on one side outer wall of the front end of the air intake cylinder (631). The air intake side hole (6312) is connected to the air intake groove (6311), and the L-shaped air pipe (633) is connected to the air intake side hole (6312). The composition and connection relationship of each structure in the second piston rod (632) are the same as those of each structure in the first piston rod (622).

7. A multi-cavity, multi-medium thermal management cold plate for power batteries according to claim 6, characterized in that: The stirring block (64) includes an arc-shaped long block (641) and several concave rotating frames (642) installed on the back of the arc-shaped long block (641). A closing cover (643) is movably installed on the concave rotating frame (642), and the front end of the arc-shaped long block (641) is arc-shaped, while the back end of the arc-shaped long block (641) is flat.

8. A multi-cavity, multi-medium thermal management cold plate for power batteries according to claim 7, characterized in that: The arc-shaped long block (641) is provided with several anti-blocking holes (6411), and the closing cover (643) is respectively covering the opening at the tail end of the anti-blocking hole (6411); The concave rotating frame (642) includes a mounting base plate (6421) and mounting rings (6422) respectively fixedly installed at both ends of the top surface of the mounting base plate (6421), and a fan-shaped limiting groove (6423) is provided on the upper inner wall of the inner cavity of the mounting ring (6422). A rotating shaft (6431) is fixedly installed on the outer sides of one end of the closed cover (643), and a fan-shaped limiting block (6432) is fixedly installed at the top of the outer periphery of the rotating shaft (6431). The rotating shaft (6431) is movably installed in the mounting ring (6422), and the fan-shaped limiting block (6432) is set in the fan-shaped limiting groove (6423).

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