Liquid cooling plate structure and battery pack

Abstract

Liquid cooling plate structure, including: a liquid cooling plate body (1) which is provided internally with a liquid cooling chamber (11) as well as a liquid inlet (12) and a liquid outlet (13), wherein the liquid inlet (12) and the liquid outlet (13) are connected to the liquid cooling chamber (11); a liquid inlet connection (2) which is detachably arranged on the liquid inlet (12); a liquid outlet port (3) which is detachably arranged on the liquid outlet (13); wherein at least one of the liquid outlet port (3) and the liquid inlet port (2) is provided with a check valve element (7).

Description

FIELD OF THE INVENTION

[0001] The present application relates to the technical field of batteries, in particular to a liquid cooling plate structure and a battery pack. STATE OF THE ART

[0002] Inlet and outlet connections on liquid cooling plates in related technology are formed as one piece with the liquid cooling plates. DISCLOSURE OF THE INVENTIONTechnical Problem

[0003] After the battery pack assembly is completed, it is very likely that the inlet and outlet ports will be broken during installation and transportation, and the entire battery pack needs to be disassembled and a new liquid cooling plate replaced, which is very troublesome, and in actual use, it is found that the inlet and outlet ports also have backflow problems, which affects the overall cooling effect. Technical solution

[0004] According to a first aspect, the present application provides a liquid cooling plate structure comprising: a liquid cooling plate body internally provided with a liquid cooling chamber and a liquid inlet and a liquid outlet connected to the liquid cooling chamber; a liquid inlet port detachably disposed at the liquid inlet; a liquid outlet port detachably disposed at the liquid outlet; wherein at least one of the liquid outlet port and the liquid inlet port is provided with a check element.

[0005] In one embodiment of the application, it is provided that the liquid inlet connection penetrates into the liquid inlet and is screwed to the wall surface of the liquid inlet, wherein the liquid outlet connection penetrates into the liquid outlet and is screwed to the wall surface of the liquid outlet.

[0006] According to a second aspect, the present application provides a battery pack comprising the above liquid cooling plate structure. Beneficial effects:

[0007] The liquid cooling plate structure provided in this application specifically adopts a structure in which the liquid inlet port and the liquid outlet port are detachable. That is, the liquid cooling plate body is detachably connected to the liquid inlet port and the liquid outlet port, and direct disassembly for replacement is possible when subsequent maintenance and replacement is performed without removing the entire battery pack and replacing the new liquid cooling plate. The operation is very convenient and fast, and maintenance costs can be saved. In addition, the liquid inlet port and the liquid outlet port are designed separately and can be directly processed separately later, which can also reduce manufacturing difficulty and improve manufacturing efficiency.At the same time, a check element is used in the liquid inlet port and the liquid outlet port, which can help prevent backflow, ensure normal cooling of the coolant and improve the cooling effect. Description of the invention Fig. 1 shows a schematic diagram of the structure of the liquid cooling plate structure of the embodiment of the present application; Fig. 2 shows a schematic diagram of the structure of the liquid cooling plate structure of the embodiment of the present application in a disassembled state; Fig. 3 shows an enlarged detail of point A according to Fig. 2; Fig. 4 shows a sectional view of the internal structure of the liquid cooling plate structure of the embodiment of the present application; Fig. 5 shows another sectional view of the internal structure of the liquid cooling plate structure of the embodiment of the present application; Fig. 6 shows a sectional view of the liquid inlet port of the liquid cooling plate structure of the embodiment of the present application; Fig. 7 an enlarged detail of point B according to Fig. 6; Fig. 8 shows a schematic diagram of the internal structure of the liquid outlet port with the check element mounted thereon in the liquid cooling plate structure of the embodiment of the present application. Reference symbol:

[0008] 1. Liquid cooling plate body; 11. Liquid cooling chamber; 12. Liquid inlet 13. Liquid outlet; 14. Main fin; 15. Sub-fin; 16. Reinforcing rib; 2. Liquid inlet port; 3. Liquid outlet port; 4. Threaded segment; 5. Retaining ring; 6. Unthreaded segment; 7. Check element; 8. Sealing ring. Embodiments of the invention

[0009] Embodiment of the present application discloses a liquid cooling plate structure used in Fig. 1 to 7, the liquid cooling plate structure comprises a liquid cooling plate body 1 provided internally with a liquid cooling chamber 11 and a liquid inlet 12 and a liquid outlet 13 connected to the liquid cooling chamber 11.

[0010] The liquid cooling plate structure further comprises a liquid inlet connection 2, which is detachably arranged at the liquid inlet 12; the detachable structure can be designed as a threaded connection, a plug-in connection, a snap-in connection, etc.

[0011] The liquid cooling plate structure further comprises a liquid outlet connection 3, which is detachably arranged on the liquid outlet 13; the detachable structure can also be designed as a screw connection, a plug connection, or a snap connection.

[0012] Furthermore, at least one of the liquid outlet port 3 and the liquid inlet port 2 is provided with a check element 7; The check element 7 can be designed as a check valve or as a check rubber ball.

[0013] In the present embodiment, the liquid cooling plate structure specifically adopts a structure in which the liquid inlet port 2 and the liquid outlet port 3 are detachable, that is, the liquid cooling plate body 1 is detachably connected to the liquid inlet port 2 and the liquid outlet port 3, and direct disassembly for replacement is possible when subsequent maintenance and replacement is performed without removing the entire battery pack and replacing the new liquid cooling plate. The operation is very convenient and fast, and the maintenance cost can be saved. In addition, the liquid inlet port 2 and the liquid outlet port 3 are designed separately and can be directly processed separately later, which can also reduce the manufacturing difficulty and improve manufacturing efficiency.At the same time, a check element 7 is inserted in each of the liquid inlet port 2 and the liquid outlet port 3, which can help prevent backflow, ensure normal cooling of the coolant and improve the cooling effect.

[0014] Optionally, the liquid outlet connection 3 and the liquid inlet connection 2 are both provided with the check element 7, which serves to prevent backflow.

[0015] The check element 7 is a check rubber ball; wherein the check rubber ball is arranged in the liquid outlet port 3 on a side facing the liquid outlet 13 in the liquid outlet port 3; the check rubber ball is arranged in the liquid inlet port 2 on a side facing the liquid inlet 12 in the liquid inlet port 2.

[0016] With reference to Fig. 7 shows the structure of the check rubber ball inside the liquid inlet port 2, the liquid can be supplied in a single direction, and in the case of backflow, the check rubber ball in the liquid inlet port 2 can block the flow channel and prevent backflow; In the same way, Fig. 8, which shows the structure of the check rubber ball within the liquid outlet port 3, wherein the liquid can be discharged in a single direction, and upon backflow, the check rubber ball in the liquid outlet port 3 blocks the flow channel and prevents backflow.

[0017] Optionally, the liquid inlet port 2 penetrates the liquid inlet 12 and is screwed to the wall surface of the liquid inlet 12, and the liquid outlet port 3 penetrates the liquid outlet 13 and is screwed to the wall surface of the liquid outlet 13. In this embodiment, the detachable connection between the liquid inlet port 2, the liquid outlet port 3, and the liquid cooling plate body 1 can be a threaded connection, and the threaded connection structure is simple, which facilitates manufacturing and production and reduces manufacturing difficulty.

[0018] One end of the liquid inlet port 2 penetrates into the liquid inlet 12 and is threadedly connected to the wall surface of the liquid inlet 12, and the other end of the liquid inlet port 2 is arranged to be connected to the external liquid inlet cooling piping; one end of the liquid outlet port 3 penetrates into the outlet 13 and is screwed to the wall of the outlet 13, and the other end of the outlet port 3 is arranged to be connected to the external outlet-cooled piping to form a coolant circulation in the liquid cooling plate structure, and is adjusted to dissipate heat to the battery.

[0019] Of course, in other optional embodiments, the liquid inlet port and the liquid outlet port are each connected to the corresponding liquid inlet and outlet, respectively

[0020] Optionally, it is provided that the liquid inlet connection 2 and the liquid outlet connection 3 each have a threaded segment 4, a fastening ring 5 and a sealing ring 8, wherein the area between the fastening ring 5 and the threaded segment 4 of the liquid inlet connection 2 and the area between the fastening ring 5 and the threaded segment 4 of the liquid outlet connection 3 are both threadless segments 6 and the sealing ring 8 of the liquid inlet connection 2 is mounted on the threadless segment 6 of the liquid inlet connection 2 and the sealing ring 8 of the liquid outlet connection 3 is mounted on the threadless segment 6 of the liquid outlet connection 3.In this embodiment, since the liquid inlet port 2 and the liquid outlet port 3 are detachably connected to the liquid cooling plate body 1, the sealing property is weakened to some extent, so the sealing property of the connection is improved by the arrangement of the sealing ring 8. In a specific use, when the liquid inlet port 2 and the liquid outlet port 3 are both mounted on the liquid cooling plate body 1, the liquid inlet port 2 and the liquid outlet port 3 each press the sealing ring 8 against the liquid cooling plate body 1 to improve the sealing property of the connection and prevent water leakage. Furthermore, the sealing ring 8 is also mounted on the threadless segment 6, and the problem of sealing failure of the threaded segment 4 for the sealing ring 8 is avoided.

[0021] For the fluid inlet port 2, the sealing ring 8 on the fluid inlet port 2 can be pressed between the circumferential outer wall of the unthreaded segment 6 of the fluid inlet port 2 and the inner wall of the fluid inlet 12; for the fluid outlet port 3, the sealing ring 8 on the fluid outlet port 3 can be pressed between the circumferential outer wall of the unthreaded section 6 of the fluid outlet port 3 and the inner wall of the fluid outlet 13.

[0022] Of course, in other embodiments, the sealing ring may also be pressed using the fixing ring. For example, the sealing ring at the liquid inlet port may be pressed between the fixing ring at the liquid inlet port and the side frame of the liquid cooling plate body. For example, the sealing ring at the liquid outlet port may be pressed between the fixing ring at the liquid outlet port and the side frame of the liquid cooling plate body.

[0023] Optionally, the liquid inlet 12 and the liquid outlet 13 are arranged on the same side of the liquid cooling plate body 1. For specific applications, it will be more convenient and faster to disassemble and assemble the liquid inlet port 2 and the liquid outlet port 3.

[0024] Optionally, the openings of the liquid inlet 12 and the liquid outlet 13 are provided flush with a side frame of the liquid cooling plate body 1. In order to better protect the structure of the liquid inlet 12 and the liquid outlet 13 themselves, in the specific design, the liquid inlet 12 and the liquid outlet 13 themselves are arranged flush with the side frame of the liquid cooling plate body 1 and do not protrude beyond the side frame of the liquid cooling plate body 1, and thus the deformation of the liquid inlet 12 and the liquid outlet 13 is largely prevented, and the structural strength of the liquid inlet 12 and the liquid outlet 13 themselves can be effectively reinforced.

[0025] Optionally, a main rib 14 is arranged in the liquid cooling plate body 1, and the main rib 14 is arranged along the length direction of the liquid cooling plate body 1; wherein the main rib 14 divides the liquid cooling chamber 11 into a liquid inlet channel connected to the liquid inlet 12 and a liquid outlet channel connected to the liquid outlet 13, and the liquid inlet channel is connected to the liquid outlet channel. In this embodiment, a main rib 14 is arranged in the liquid cooling plate body 1 to divide the liquid cooling chamber 11 into a liquid inlet channel and a liquid outlet channel, thus directing the flow direction of the coolant and better cooling the battery.

[0026] Optionally, the overall shape of the liquid cooling chamber 11 is U-shaped. This makes the structure simple, easy to manufacture and produce, and reduces manufacturing difficulties.

[0027] Optionally, a plurality of sub-fins 15 are arranged in the liquid cooling plate body 1, and the sub-fins 15 are arranged along the length direction of the liquid cooling plate body 1; wherein the liquid inlet channel is provided with at least one sub-fin 15; and / or wherein the liquid outlet channel is provided with at least one sub-fin 15. In the present embodiment, by arranging a sub-fin 15 in the liquid inlet channel and a sub-fin 15 in the liquid outlet channel, the coolant can flow dispersedly in the liquid inlet channel and the liquid outlet channel, so that the area in which the coolant flows is larger, and then a larger cooling area is realized to improve the cooling effect.

[0028] Optionally, a plurality of reinforcing ribs 16 are arranged on the cavity walls of the liquid inlet channel and the liquid outlet channel, and the extension direction of the reinforcing rib 16 is arranged obliquely to the length direction of the liquid cooling plate body 1. In this embodiment, one reinforcing rib 16 is arranged in the liquid inlet channel and the liquid outlet channel to enhance the structural strength of the liquid cooling plate body 1 and extend its service life.

[0029] Optionally, it is provided that the reinforcing ribs 16 in the liquid inlet channel and the reinforcing ribs 16 in the liquid outlet channel are arranged symmetrically to each other with respect to the main rib 14, which ensures simple construction, good ease of manufacture and facilitated production.

[0030] The embodiment of the present application further discloses a battery pack including the above-described liquid cooling plate structure. The battery pack also employs the structure in which the liquid inlet port 2 and the liquid outlet port 3 are detachable. That is, the liquid cooling plate body 1 is detachably connected to the liquid inlet port 2 and the liquid outlet port 3, and direct disassembly for replacement is possible when performing subsequent maintenance and replacement without removing the entire battery pack and replacing the new liquid cooling plate. Operation is very convenient and fast, and maintenance costs can be saved.In addition, the liquid inlet port 2 and the liquid outlet port 3 are designed separately and can be directly processed separately later, which can also reduce the manufacturing difficulty and improve the manufacturing efficiency.

Claims

[1] Liquid cooling plate structure comprising: a liquid cooling plate body (1) provided internally with a liquid cooling chamber (11) and a liquid inlet (12) and a liquid outlet (13), the liquid inlet (12) and the liquid outlet (13) being connected to the liquid cooling chamber (11); a liquid inlet port (2) detachably disposed on the liquid inlet (12); a liquid outlet port (3) detachably arranged on the liquid outlet (13); wherein at least one of the liquid outlet port (3) and the liquid inlet port (2) is provided with a check element (7). [2] The liquid cooling plate structure according to claim 1, wherein the liquid inlet port (2) penetrates into the liquid inlet (12) and is screwed to a wall surface of the liquid inlet (12), wherein the liquid outlet port (3) penetrates into the liquid outlet (13) and is screwed to a wall surface of the liquid outlet (13). [3] The liquid cooling plate structure according to claim 2, wherein the liquid inlet port (2) and the liquid outlet port (3) each comprise a threaded segment (4), a fixing ring (5), and a sealing ring (8), wherein a portion between the fixing ring (5) and the threaded segment (4) of the liquid inlet port (2) and a portion between the fixing ring (5) and the threaded segment (4) of the liquid outlet port (3) are unthreaded segments (6), and the sealing ring (8) of the liquid inlet port (2) is mounted on the unthreaded segment (6) of the liquid inlet port (2), and the sealing ring (8) of the liquid outlet port (3) is mounted on the unthreaded segment (6) of the liquid outlet port (3). [4] A liquid cooling plate structure according to claim 3, wherein the sealing ring (8) of the liquid inlet port (2) is pressed between the circumferential outer wall of the threadless segment (6) of the liquid inlet port (2) and the inner wall of the liquid inlet (12). [5] A liquid cooling plate structure according to claim 3, wherein the sealing ring (8) of the liquid outlet port (3) is pressed between the circumferential outer wall of the threadless segment (6) of the liquid outlet port (3) and the inner wall of the liquid outlet (13). [6] A liquid cooling plate structure according to any one of claims 1 to 5, wherein the liquid inlet (12) and the liquid outlet (13) are arranged on the same side of the liquid cooling plate body (1). [7] Liquid cooling plate structure according to one of claims 1 to 6, wherein the openings of the liquid inlet (12) and the liquid outlet (13) are flush with a side frame of the liquid cooling plate body (1). [8] The liquid cooling plate structure according to any one of claims 1 to 7, wherein a main rib (14) is arranged in the liquid cooling plate body (1), and the main rib (14) is arranged along the length direction of the liquid cooling plate body (1); wherein the main rib (14) divides the liquid cooling chamber (11) into a liquid inlet channel connected to the liquid inlet (12) and a liquid outlet channel connected to the liquid outlet (13), and wherein the liquid inlet channel is connected to the liquid outlet channel. [9] A liquid cooling plate structure according to claim 8, wherein the overall shape of the liquid cooling chamber (11) is U-shaped. [10] The liquid cooling plate structure according to claim 8 or 9, wherein a plurality of sub-fins (15) are arranged in the liquid cooling plate body (1), and the sub-fins (15) are arranged along the length direction of the liquid cooling plate body (1); wherein the liquid inlet channel is provided with at least one sub-rib (15); and / or wherein the liquid outlet channel is provided with at least one sub-rib (15). [11] A liquid cooling plate structure according to any one of claims 8 to 10, wherein a plurality of reinforcing ribs (16) are arranged on the cavity walls of the liquid inlet channel and the liquid outlet channel, and the extension direction of the reinforcing rib (16) is arranged obliquely to the length direction of the liquid cooling plate body (1). [12] A liquid cooling plate structure according to claim 11, wherein the reinforcing ribs (16) in the liquid inlet channel and the reinforcing ribs (16) in the liquid outlet channel are arranged symmetrically to each other with respect to the main rib (14). [13] A liquid cooling plate structure according to any one of claims 1 to 12, wherein a check element (7) is arranged in the outlet port (3) and the liquid inlet port (2), and the check element (7) is a check rubber ball; wherein the non-return rubber ball is arranged in the liquid outlet port (3) on a side facing the liquid outlet (13) in the liquid outlet port (3); the non-return rubber ball is arranged in the liquid inlet connection (2) on a side facing the liquid inlet (12) in the liquid inlet connection (2). [14] A battery pack comprising the liquid cooling plate structure according to any one of claims 1 to 13.

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