Liquid cooling plate and battery box

Abstract

The utility model belongs to the field of secondary batteries, and particularly relates to a liquid cooling plate and a battery box. In the prior art, when a cover plate is thin, a threaded hole is inconvenient to process on the cover plate; the utility model provides a liquid cooling plate, aiming at solving the technical problem that the cooling effect of the liquid cooling plate is poorer due to the fact that a cover plate does not comprise a flow channel when the cover plate is thickened to facilitate the processing of a threaded hole. The liquid cooling plate comprises a liquid cooling plate body and a water nozzle, the liquid cooling plate body comprises a runner plate and a cover plate, a fixed flange is arranged at one end, close to the liquid cooling plate body, of the water nozzle, and through holes are formed in the fixed flange and the cover plate; a through hole is formed in the cover plate, a fixing hole corresponding to the through hole is formed in the runner plate, the water nozzle is fixedly connected with the runner plate through bolts installed in the through hole and the fixing hole, or a welding stud is fixedly arranged on the runner plate, and the welding stud penetrates through the through hole in the cover plate and the through hole in the fixing flange and is connected with a nut. The water nozzle is detachably fixed through the runner plate, so that the cover plate is thinned, and the cooling effect of the liquid cooling plate is improved.

Description

Technical Field

[0001] The utility model belongs to the field of secondary batteries, and in particular relates to a liquid cooling plate and a battery box. Background Art

[0002] In a liquid-cooled battery box, a liquid cooling plate is used to cool the battery module. In the prior art, there is a flow plate that is hollowed out or integrally processed to form a flow channel in the liquid cooling plate, and the flow channel plate is relatively thick. For example, a Chinese utility model patent with an authorization announcement number of CN218996872U and an authorization announcement date of 2023.05.09 discloses a liquid cooling plate for a battery pack. The liquid cooling plate includes a base (equivalent to a flow channel plate), a cover plate (the base and the cover plate constitute the body of the liquid cooling plate) and a joint (i.e., a water nozzle), and a baffle and a diverter plate are integrally convexly provided on the base to form a flow channel (equivalent to the internal hollowing of the base to form a flow channel), and the cover plate is arranged above the base to seal the flow channel, and an external thread is provided at the lower end of the joint, and a threaded hole is provided on the cover plate. The joint is threadedly connected to the cover plate, and the joint is connected to the flow channel.

[0003] In the above liquid cooling plate, when the cover plate is thin, it is inconvenient to process the threaded holes on the cover plate; and when the threaded holes are processed more easily by thickening the cover plate, the cooling effect of the liquid cooling plate is poor because the cover plate does not include a flow channel. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid cooling plate to solve the technical problem that when the cover plate is thin, it is inconvenient to process the threaded holes on the cover plate; when the threaded holes are conveniently processed by thickening the cover plate, the cooling effect of the liquid cooling plate is poor because the cover plate does not include a flow channel. The purpose of the utility model is also to provide a battery box to solve the same technical problem as the above problem.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the liquid cooling plate provided by the utility model is:

[0006] A liquid cooling plate comprises a liquid cooling plate body and a water nozzle. The liquid cooling plate body comprises a cover plate and a flow channel plate for forming a flow channel. The water nozzle has a fixing flange at one end close to the liquid cooling plate body. Through holes are provided on the cover plate and the fixing flange. The flow channel plate is provided with fixing holes corresponding to the through holes. The water nozzle is fixedly connected to the flow channel plate by bolts installed in the through holes and the fixing holes. Alternatively, welding studs are fixedly provided on the flow channel plate. The welding studs pass through the through holes on the cover plate and the fixing flange and are connected with nuts.

[0007] Furthermore, two fixing flanges are provided and symmetrically arranged on both sides of the faucet, each fixing flange is provided with a through hole, the cover plate is provided with a corresponding through hole, and the flow channel plate is provided with a corresponding fixing hole.

[0008] Furthermore, the fixing holes are evenly spaced along the circumferential direction on the same circumference.

[0009] Furthermore, a sealing ring is provided between the fixing flange and the cover plate, and the sealing ring is located within the circumference surrounded by the fixing holes.

[0010] Furthermore, the fixing hole is a threaded hole.

[0011] Furthermore, a sealing ring is provided between the fixing flange and the cover plate.

[0012] Furthermore, a mounting groove for mounting a sealing ring is provided at the bottom of the fixed flange.

[0013] Furthermore, the water nozzle extends forward away from one end of the liquid cooling plate body.

[0014] The beneficial effects of the liquid cooling plate of the utility model are as follows: the utility model is an improved invention. By setting a fixing flange, a through hole can be conveniently processed on the water nozzle; the through hole on the cover plate can avoid interference between the cover plate and the bolts or studs; in one technical solution, by setting fixing holes, through holes and bolts, the detachable connection between the water nozzle and the liquid cooling plate body can be conveniently realized. At the same time, since there is no need to process threaded holes on the cover plate, the cover plate can be effectively thinned, thereby improving the cooling effect of the liquid cooling plate; in another technical solution, by setting welding studs on the flow channel plate and detachably connecting nuts after the fixing parts pass through the through holes, the relative positions of the liquid cooling plate body and the water nozzle can be locked, and the detachable connection between the liquid cooling plate body and the water nozzle can be realized, thereby thinning the cover plate and improving the cooling effect of the liquid cooling plate.

[0015] In order to achieve the above-mentioned purpose, the technical solution of the battery box provided by the utility model is:

[0016] A battery box comprises a box body and a liquid cooling plate arranged in the box body, the liquid cooling plate comprises a liquid cooling plate body and a water nozzle, the liquid cooling plate body comprises a cover plate and a flow channel plate for forming a flow channel, the water nozzle has a fixing flange at one end close to the liquid cooling plate body, and through holes are provided on the cover plate and the fixing flange; fixing holes corresponding to the through holes are provided on the flow channel plate, the water nozzle is fixedly connected to the flow channel plate by bolts installed in the through holes and the fixing holes, or welding studs are fixedly provided on the flow channel plate, the welding studs pass through the through holes on the cover plate and the fixing flange and are connected with nuts.

[0017] Furthermore, two fixing flanges are provided and symmetrically arranged on both sides of the faucet, each fixing flange is provided with a through hole, the cover plate is provided with a corresponding through hole, and the flow channel plate is provided with a corresponding fixing hole.

[0018] Furthermore, the fixing holes are evenly spaced along the circumferential direction on the same circumference.

[0019] Furthermore, a sealing ring is provided between the fixing flange and the cover plate, and the sealing ring is located within the circumference surrounded by the fixing holes.

[0020] Furthermore, the fixing hole is a threaded hole.

[0021] Furthermore, a sealing ring is provided between the fixing flange and the cover plate.

[0022] Furthermore, a mounting groove for mounting a sealing ring is provided at the bottom of the fixed flange.

[0023] Furthermore, one end of the water nozzle away from the liquid cooling plate body extends forward and protrudes from the front panel of the box body.

[0024] The beneficial effects of the battery box of the utility model are as follows: the utility model is an improved invention. The liquid cooling plate can be conveniently arranged through the box body; the through hole can be conveniently processed on the water nozzle by arranging the fixing flange; the interference between the cover plate and the bolts or studs can be avoided by the through hole on the cover plate; in one technical solution, the detachable connection between the water nozzle and the liquid cooling plate body can be conveniently realized by arranging the fixing hole, the through hole and the bolt. At the same time, since there is no need to process the threaded hole on the cover plate, the cover plate can be effectively thinned, thereby improving the cooling effect of the liquid cooling plate; in another technical solution, by arranging the welding stud on the flow channel plate and detachably connecting the nut after the fixing part passes through the through hole, the relative position of the liquid cooling plate body and the water nozzle can be locked, and the detachable connection between the liquid cooling plate body and the water nozzle can be realized, thereby thinning the cover plate and improving the cooling effect of the liquid cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of Example 1 of the liquid cooling plate of the utility model;

[0026] Figure 2 for Figure 1 A magnified view of the structure at the water nozzle;

[0027] Figure 3 for Figure 1 An exploded view of the structure at an angle when the cover plate and bottom plate are omitted at the water nozzle;

[0028] Figure 4 for Figure 1 The structural exploded view from another angle when the cover plate and bottom plate are omitted at the water nozzle;

[0029] Figure 5 It is a structural schematic diagram of an embodiment of a battery box of the utility model.

[0030] Description of reference numerals:

[0031] 1. Liquid cooling plate body; 11. Cover plate; 12. Flow channel plate; 121. Threaded hole; 13. Bottom plate; 2. Water nozzle; 21. Fixed flange; 22. Bolt; 23. Through hole; 24. Sealing ring; 3. Box body. DETAILED DESCRIPTION

[0032] In order to solve the problems pointed out in the background technology, the utility model provides a liquid cooling plate, by setting fixing holes or welding studs on the flow channel plate, using the flow channel plate to detachably fix the water nozzle, thereby achieving the effect of thinning the cover plate and improving the cooling effect of the liquid cooling plate. The utility model also provides a battery box including the above liquid cooling plate.

[0033] The present invention is further described in detail below in conjunction with the embodiments.

[0034] Specific embodiment 1 of the liquid cooling plate provided by the utility model:

[0035] like Figures 1 to 4 As shown, as a specific embodiment, the liquid cooling plate includes a liquid cooling plate body 1 and a water nozzle 2. The liquid cooling plate body 1 includes a cover plate 11 and a flow channel plate 12 for forming a flow channel. The end of the water nozzle 2 close to the liquid cooling plate body 1 has a fixing flange 21, a through hole is provided on the cover plate 11, and a through hole 23 is provided on the fixing flange 21; the flow channel plate 12 is provided with a fixing hole corresponding to the through hole 23, and the water nozzle 2 is fixedly connected to the flow channel plate 12 by installing the through hole of the cover plate 11, the through hole 23 of the fixing flange 21 and the bolt 22 in the fixing hole. Specifically, the fixing hole is a threaded hole 121, and the flow channel plate 12 is integrally processed to form a flow channel. The liquid cooling plate body 1 also includes a bottom plate 13, and the cover plate 11, the flow channel plate 12 and the bottom plate 13 form a closed flow channel, and no through hole is provided on the bottom plate 13. Of course, in other specific embodiments, the fixing hole can also be a through hole, and a through hole is also provided on the bottom plate 13, and the bolt 22 passes through the fixing flange 21 and the entire liquid cooling plate body 1 and is connected with a nut; of course, in other specific embodiments, the flow channel plate 12 is hollowed out internally, and in this case, the liquid cooling plate body 1 does not include the bottom plate 13.

[0036] By providing the fixing flange 21, the through hole 23 can be conveniently processed on the water nozzle 2; the through hole can avoid interference between the cover plate 11 and the fixing flange 21 and the fixing parts; by providing the fixing hole, the through hole and the bolt 22, the detachable connection between the water nozzle 2 and the liquid cooling plate body 1 can be conveniently achieved. At the same time, since there is no need to process threaded holes on the cover plate 11, the cover plate 11 can be effectively thinned, thereby improving the cooling effect of the liquid cooling plate.

[0037] like Figures 2-3As shown, in order to better fix the faucet 2, as a specific implementation, two fixing flanges 21 are provided and symmetrically arranged on both sides of the faucet 2, each fixing flange 21 is provided with a through hole 23, the cover plate 11 is provided with a corresponding through hole, and the flow channel plate 12 is provided with a corresponding fixing hole. Specifically, there are four fixing holes, and each fixing hole is evenly spaced on the same circumference along the circumferential direction and is arranged at the four vertices of the same square. By providing fixing flanges 21 and fixing holes on both sides of the faucet 2, and making the fixing holes evenly spaced on the same circumference, the faucet 2 can be better fixed from both sides, but in other specific implementations, only one fixing hole and one fixing flange 21 can be provided, and the fixing hole and the fixing flange 21 can be arranged on the same side of the faucet 2. In this embodiment, the number and arrangement of the fixing holes and the fixing flange 21 are not limited.

[0038] like Figures 2 to 4 As shown, in order to avoid water leakage at the contact point between the fixed flange 21 and the cover plate 11, as a specific embodiment, a sealing ring 24 is provided between the fixed flange 21 and the cover plate 11. Specifically, a mounting groove for installing the sealing ring 24 is provided at the bottom of the fixed flange 21, and the sealing ring 24 is installed in the mounting groove. The sealing ring 24 can conveniently avoid leakage at the contact point between the fixed flange 21 and the cover plate 11, and the sealing ring 24 can be conveniently installed through the mounting groove. The mounting groove is set at the bottom of the fixed flange 21, and the structure is simple and easy to process. Of course, in other specific embodiments, the sealing ring 24 may not be set, but the pressure between the cover plate 11 and the fixed flange 21 is increased by tightening the bolts 22 to avoid leakage; or, a mounting groove for installing the sealing ring 24 is set on the flow channel plate 12, and a sealing ring through hole for avoiding the sealing ring 24 is set on the cover plate 11.

[0039] like Figures 3-4 As shown, in order to reduce the volume of the fixed flange 21, as a specific implementation, the sealing ring 24 is located within the circumference surrounded by the fixing holes. By arranging the sealing ring 24 within the circumference surrounded by the fixing holes, the volume of the fixed flange 21 can be effectively reduced. Of course, in other specific implementations, the contact area between the fixed flange 21 and the cover plate 11 can also be increased, and the sealing ring 24 can be arranged inside and outside the circumference surrounded by the fixing holes.

[0040] like Figures 1 to 4 As shown, in order to facilitate the use of the liquid cooling plate, as a specific embodiment, the end of the water nozzle 2 away from the liquid cooling plate body 1 extends forward. Extending the end of the water nozzle 2 away from the liquid cooling plate body 1 forward can facilitate the water nozzle 2 to pass through the front panel of the battery box or battery module tray and other structures, thereby facilitating the setting of the liquid cooling pipeline. However, in other specific embodiments, the end of the water nozzle 2 away from the liquid cooling plate body 1 can also be extended upward to bypass the front panel of the battery box or battery module and other structures through the liquid cooling pipeline.

[0041] Specific embodiment 2 of the liquid cooling plate provided by the utility model:

[0042] Reference Figures 1 to 4 As shown, the liquid cooling plate includes a liquid cooling plate body 1 and a water nozzle 2. The liquid cooling plate body 1 includes a cover plate 11 and a flow channel plate 12 for forming a flow channel. The end of the water nozzle 2 close to the liquid cooling plate body 1 has a fixed flange 21, and a through hole 23 is provided on the fixed flange 21. Figures 1 to 4 Different from the liquid cooling plate shown in the figure, in this embodiment, welding studs are fixedly provided on the flow channel plate 12, and the welding studs pass through the through holes on the cover plate and the fixing flange and are connected with nuts.

[0043] By providing the fixing flange 21, the through hole 23 can be conveniently processed on the water nozzle 2; the through hole on the cover plate can avoid interference between the cover plate 11 and the fixing part; by providing a welding stud on the flow channel plate 12, and detachably connecting the nut after the welding stud passes through the through hole 23 on the fixing flange 21, the relative position of the liquid cooling plate body 1 and the water nozzle 2 can be locked, and the detachable connection between the liquid cooling plate body 1 and the water nozzle 2 can be achieved, thereby thinning the cover plate 11 and improving the cooling effect of the liquid cooling plate.

[0044] The specific embodiment of the battery box provided by the utility model:

[0045] like Figure 5 As shown, as a specific implementation, the battery box includes a box body 3 and a liquid cooling plate arranged in the box body 3. The specific structure of the liquid cooling plate is the same as the specific structure of the specific embodiment 1 or 2 of the above-mentioned liquid cooling plate, and will not be repeated here.

[0046] If special instructions are required, in this embodiment, the end of the water nozzle 2 away from the liquid cooling plate body 1 extends forward and extends out from the front panel of the box body 3, so as to facilitate the installation of the liquid cooling pipeline. However, in other specific embodiments, the end of the water nozzle 2 away from the liquid cooling plate body 1 can also extend upward and bypass the front panel of the battery box through the liquid cooling pipeline.

[0047] Finally, it should be noted that the above are only preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A liquid cooling plate, comprising a liquid cooling plate body and a water nozzle, wherein the liquid cooling plate body comprises a cover plate and a flow channel plate for forming a flow channel, characterized in that: The end of the water nozzle close to the liquid cooling plate body is provided with a fixing flange, and through holes are provided on the cover plate and the fixing flange; the flow channel plate is provided with fixing holes corresponding to the through holes, and the water nozzle is fixedly connected to the flow channel plate by bolts installed in the through holes and the fixing holes, or, the flow channel plate is fixedly provided with welding studs, which pass through the through holes on the cover plate and the fixing flange and are connected with nuts.

2. The liquid cooling plate according to claim 1, characterized in that: Two fixing flanges are provided and symmetrically arranged on both sides of the water nozzle, each fixing flange is provided with a through hole, the cover plate is provided with a corresponding through hole, and the flow channel plate is provided with a corresponding fixing hole.

3. The liquid cooling plate according to claim 2, characterized in that: The fixing holes are evenly distributed on the same circumference at intervals along the circumferential direction.

4. The liquid cooling plate according to claim 3, characterized in that: A sealing ring is arranged between the fixing flange and the cover plate, and the sealing ring is located within the circumference surrounded by the fixing holes.

5. The liquid cooling plate according to any one of claims 1 to 4, characterized in that: The fixing holes are threaded holes.

6. The liquid cooling plate according to any one of claims 1 to 3, characterized in that: A sealing ring is arranged between the fixed flange and the cover plate.

7. The liquid cooling plate according to claim 6, characterized in that: The bottom of the fixed flange is provided with a mounting groove for mounting a sealing ring.

8. The liquid cooling plate according to any one of claims 1 to 4, characterized in that: The water nozzle extends forward from one end of the liquid cooling plate body.

9. A battery box, comprising a box body and a liquid cooling plate arranged in the box body, characterized in that: The liquid cooling plate is the liquid cooling plate according to any one of claims 1 to 7.

10. The battery box according to claim 9, characterized in that: One end of the water nozzle away from the liquid cooling plate body extends forward and protrudes from the front panel of the box body.

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