Automobile lithium battery fast charging heat dissipation device

Abstract

The utility model relates to the technical field of lithium battery heat dissipation, in particular to a fast charging heat dissipation device for an automobile lithium battery. According to the technical scheme, the cooling device comprises a lower vacuum heat conduction cooling disc, a cushion disc and an upper vacuum heat conduction cooling disc, and further comprises a water cooling assembly and a steam condensation assembly, and through the arrangement of the water cooling assembly and the steam condensation assembly, cooling liquid in the lower vacuum heat conduction cooling disc absorbs heat from a battery in the flowing process; the cooling liquid in the upper vacuum heat conduction cooling disc can also cool the upper end of the flat heat pipe all the time, meanwhile, the cooling liquid in the lower water cooling channel can be partially evaporated after heat absorption and temperature rise, and steam can be quickly condensed into liquid when floating upwards and making contact with the inner wall of the upper end of the flat heat pipe which is cooled all the time; and the liquid flows back to the lower part along the capillary holes of the capillary structure layer, so that the cooling liquid can be cooled in the process of absorbing the heat of the battery instead of being cooled only in a heat exchanger.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery heat dissipation technical field especially relates to automobile lithium battery fast charging heat dissipation device. BACKGROUND

[0002] Automobile lithium battery refers to the high performance battery designed specially for automobile power system.

[0003] In order to alleviate the endurance problem of electric vehicles, the fast charging technology of electric vehicles is also in rapid progress, at the same time, the problem of a large amount of heat generated in the charging process of lithium battery at a higher speed is also aggravated, thereby affecting the stability of battery performance and increasing the probability of safety accidents.

[0004] Therefore, in view of the above-mentioned problem that a large amount of heat generated in the high-speed charging of lithium battery easily affects the battery performance and increases the probability of safety accidents, an automobile lithium battery fast charging heat dissipation device can be designed to solve the above-mentioned problem. INVENTION CONTENTS

[0005] In order to overcome the problem that the further improvement of lithium battery heating rate in the process of high-speed charging of lithium battery affects the stability of battery performance and increases the probability of safety accidents.

[0006] The technical scheme of the utility model is: automobile lithium battery fast charging heat dissipation device, including lower vacuum heat conduction cooling disc, pad disc set in the lower end of vacuum heat conduction cooling disc, upper vacuum heat conduction cooling disc set in the upper end of pad disc, still including water cooling assembly set in the lower vacuum heat conduction cooling disc and steam condensing assembly set in the upper vacuum heat conduction cooling disc, water cooling assembly includes lower water cooling channel, lower confluence channel, lower water outlet pipe, lower heat exchanger, lower water pump box, two divided water inlet pipe, flat heat pipe, capillary structure layer, steam condensing assembly includes upper water cooling channel, upper confluence channel, upper water outlet pipe, upper heat exchanger, upper water pump box, upper water inlet pipe, seal cover, fan.

[0007] Preferably, the lithium battery is laid between adjacent lower water cooling channels, the lower water pump box makes the cooling liquid inside itself flow in the lower water cooling channel, the lower water outlet pipe, the lower water outlet pipe, the lower water outlet pipe and the lower heat exchanger in sequence, and the upper water cooling channel makes the cooling liquid inside itself flow in the upper water cooling channel, the upper water inlet pipe, the upper water cooling channel, the upper water cooling channel, the upper water outlet pipe and the upper heat exchanger in sequence; the cooling liquid in the lower vacuum heat conduction cooling disc absorbs heat from the battery in the lower water cooling channel during the flow process, and the cooling liquid is cooled when flowing into the lower heat exchanger, so as to realize the cooling of the battery, at the same time, the cooling liquid in the upper water cooling channel also cools the upper end of the flat heat pipe at any time due to the same principle; and the cooling liquid in the lower water cooling channel is partially evaporated after absorbing heat and rising in temperature, the steam contacts the inner wall of the upper end of the flat heat pipe which is cooled at any time when it floats, and the steam is quickly condensed into liquid, and the liquid flows back to the lower part along the capillary pores of the capillary structure layer, so that the cooling liquid can be cooled during the process of absorbing heat from the battery, instead of being cooled only in the heat exchanger, thereby limiting the temperature rise of the cooling liquid during the heat absorption process by cooling the cooling liquid in the cooling process, and thereby greatly improving the cooling effect of the battery.

[0008] Preferably, four lower water cooling channels are arranged in the lower vacuum heat conduction cooling disc, one side of the lower water cooling channel is connected with the lower water cooling channel, the front end of the lower water cooling channel is connected with two lower water outlet pipes, and one end of the lower water outlet pipe is connected with the lower heat exchanger.

[0009] Preferably, the lower heat exchanger is connected with the lower water pump box through a pipeline on one side, the lower water pump box is connected with the two-part water inlet pipe on one side, the end of the two-part water inlet pipe is connected with the lower water cooling channel, the upper end of the lower water cooling channel is connected with five flat heat pipes, and the inner wall of the flat heat pipe is fixedly connected with a capillary structure layer.

[0010] Preferably, the upper end of the pad is fixedly connected with a plurality of support separation plates, and the support separation plates are distributed in four rows and six columns, the two support separation plates in the same row are provided with a slot arranged on the pad, and the flat heat pipe is inserted in the middle of the slot.

[0011] Preferably, four groups of upper water cooling channels are arranged in the upper vacuum heat conduction cooling disc, each group of upper water cooling channels is provided with two upper water cooling channels, and the upper water cooling channels are arranged on the front and rear end faces of the flat heat pipe respectively, and the upper water cooling channels are fixedly connected with the pad and the support separation plate.

[0012] Preferably, one side of the upper water cooling channel is connected with the upper water cooling channel, the front end of the upper water cooling channel is connected with the upper water outlet pipe, one end of the upper water outlet pipe is connected with the upper heat exchanger, and the other side of the upper heat exchanger is connected with the upper water pump box through a pipeline.

[0013] As preferred, one side of the upper water pump box is communicated with an upper water inlet pipe, the end of the upper water inlet pipe is communicated with the upper water cooling channel, the rear ends of the lower heat exchanger and the upper heat exchanger are jointly installed with an enclosure, and the upper end of the enclosure is installed with five fans.

[0014] The utility model discloses the beneficial effects of:

[0015] 1. By setting up water cooling assembly and steam condensing assembly, the cooling liquid in the lower vacuum heat conduction cooling disc absorbs the heat from the battery in the flowing process to cool the battery, and the cooling liquid in the upper vacuum heat conduction cooling disc also cools the upper end of the flat heat pipe at any time, at the same time, the cooling liquid in the lower water cooling channel will evaporate after absorbing heat and rising temperature, the steam will quickly condense into liquid when contacting the upper end of the flat heat pipe, and the liquid will flow back to the lower part along the capillary hole of the capillary structure layer, so that the cooling liquid can be cooled in the process of absorbing the heat of the battery, instead of being cooled only in the heat exchanger, to limit the temperature rise of the cooling liquid in the heat absorption process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure schematic view of the utility model is shown.

[0017] Figure 2 The lower vacuum heat conduction cooling disc structure schematic view of the utility model is shown.

[0018] Figure 3 The lower water cooling channel structure schematic view of the utility model is shown.

[0019] Figure 4 The flat heat pipe structure schematic view of the utility model is shown.

[0020] Figure 5 The pad disc structure schematic view of the utility model is shown.

[0021] Figure 6 The upper vacuum heat conduction cooling disc structure schematic view of the utility model is shown.

[0022] Figure 7 The upper water cooling channel structure schematic view of the utility model is shown.

[0023] Figure 8 The enclosure structure schematic view of the utility model is shown.

[0024] Explanation of reference signs: 1, lower vacuum heat conduction cooling disc; 2, pad disc; 3, upper vacuum heat conduction cooling disc; 401, lower water cooling channel; 402, lower confluence channel; 403, lower water outlet pipe; 404, lower heat exchanger; 405, lower water pump box; 406, two-part water inlet pipe; 407, flat heat pipe; 408, capillary structure layer; 5, support partition plate; 6, insertion slot; 701, upper water cooling channel; 702, upper confluence channel; 703, upper water outlet pipe; 704, upper heat exchanger; 705, upper water pump box; 706, upper water inlet pipe; 707, cover; 708, fan. DETAILED DESCRIPTION

[0025] The utility model is further explained below in combination with the drawings and examples.

[0026] Please refer to Figures 1-8 The utility model provides a kind of embodiment: automobile lithium battery fast charging heat dissipation device, including lower vacuum heat conduction cooling disc 1, pad disc 2 being arranged at the upper end of lower vacuum heat conduction cooling disc 1, upper vacuum heat conduction cooling disc 3 being arranged at the upper end of pad disc 2, further include water cooling assembly being arranged in lower vacuum heat conduction cooling disc 1, and steam condensing assembly being arranged in upper vacuum heat conduction cooling disc 3, water cooling assembly includes lower water cooling channel 401, lower confluence channel 402, lower water outlet pipe 403, lower heat exchanger 404, lower water pump box 405, two-part water inlet pipe 406, flat heat pipe 407, capillary structure layer 408, steam condensing assembly includes upper water cooling channel 701, upper confluence channel 702, upper water outlet pipe 703, upper heat exchanger 704, upper water pump box 705, upper water inlet pipe 706, cover 707, fan 708, the upper end of pad disc 2 is fixedly connected with multiple support partition plates 5, and support partition plate 5 is distributed in the mode of four rows six columns, insertion slot 6 being set on pad disc 2 is arranged between two support partition plates 5 of same row, and flat heat pipe 407 is inserted in the middle of insertion slot 6.

[0027] Please refer to Figures 2-8In the embodiment, four lower water cooling channels 401 are formed in the lower vacuum heat-conducting cooling disc 1. One side of the lower water cooling channels 401 is in common communication with a lower collecting channel 402. The front end of the lower collecting channel 402 is in communication with two lower water outlet pipes 403. One end of the lower water outlet pipes 403 is in common communication with a lower heat exchanger 404. One side of the lower heat exchanger 404 is in communication with a lower water pump box 405 through a pipeline. One side of the lower water pump box 405 is in communication with two-part water inlet pipes 406. The ends of the two-part water inlet pipes 406 are in communication with the lower water cooling channels 401. The upper ends of the lower water cooling channels 401 are in communication with five flat heat pipes 407. The inner walls of the flat heat pipes 407 are fixedly connected with capillary structure layers 408. Four groups of upper water cooling channels 701 are formed in the upper vacuum heat-conducting cooling disc 3. Each group of the upper water cooling channels 701 is arranged as two and is attached to the front and rear end faces of the flat heat pipes 407. The upper water cooling channels 701 are fixedly connected with the pad 2 and the support partition plate 5. One side of the upper water cooling channels 701 is in common communication with an upper collecting channel 702. The front end of the upper collecting channel 702 is in communication with an upper water outlet pipe 703. One end of the upper water outlet pipe 703 is in communication with an upper heat exchanger 704. One side of the upper heat exchanger 704 is in communication with an upper water pump box 705 through a pipeline. One side of the upper water pump box 705 is in communication with an upper water inlet pipe 706. The end of the upper water inlet pipe 706 is in communication with the upper water cooling channels 701. The rear ends of the lower heat exchanger 404 and the upper heat exchanger 704 are jointly installed with an enclosure 707. Five fans 708 are installed on the upper end of the enclosure 707.

[0028] In use, the lithium batteries are laid between the adjacent lower water cooling channels 401. The lower water pump box 405 makes the cooling liquid in the inside thereof flow in the lower vacuum heat-conducting cooling disc 1 in sequence through the two-part water inlet pipes 406, the lower water cooling channels 401, the lower collecting channel 402, the lower water outlet pipes 403 and the lower heat exchanger 404. The upper water cooling channels 701 make the cooling liquid in the inside thereof flow in the upper vacuum heat-conducting cooling disc 3 in sequence through the upper water inlet pipe 706, the upper water cooling channels 701, the upper collecting channel 702, the upper water outlet pipe 703 and the upper heat exchanger 704.

[0029] The cooling liquid in the lower vacuum heat-conducting cooling disc 1 absorbs heat from the batteries in the lower water cooling channels 401 in the flowing process. The cooling liquid is cooled when flowing into the lower heat exchanger 404 to achieve the cooling of the batteries. At the same time, the cooling liquid in the upper water cooling channels 701 also lowers the temperature of the upper ends of the flat heat pipes 407 at all times due to the same principle.

[0030] And, the cooling liquid in the lower water cooling channel 401 will be partially evaporated after absorbing heat and rising in temperature, the steam will be quickly condensed into liquid when it contacts the inner wall of the upper end of the flat heat pipe 407 which is being cooled all the time, and then the liquid will flow back to the lower part along the capillary pores of the capillary structure layer 408, so that the cooling liquid can be cooled in the process of absorbing the heat of the battery, instead of being cooled only in the heat exchanger, thereby limiting the temperature rise of the cooling liquid in the process of absorbing heat, and greatly improving the cooling effect on the battery.

[0031] In addition, the fan 708 blows air to the lower vacuum heat conduction cooling disc 1 and the upper vacuum heat conduction cooling disc 3 through the enclosure 707, so that the air flows through the lower vacuum heat conduction cooling disc 1 and the upper vacuum heat conduction cooling disc 3, thereby improving the cooling efficiency of the two on the cooling liquid.

[0032] Through the above steps, by setting the water cooling assembly and the steam condensing assembly, the cooling liquid in the lower vacuum heat conduction cooling disc 1 absorbs heat from the battery in the process of flowing to cool the battery, and the cooling liquid in the upper vacuum heat conduction cooling disc 3 also cools the upper end of the flat heat pipe 407 at all times, at the same time, the cooling liquid in the lower water cooling channel 401 will be partially evaporated after absorbing heat and rising in temperature, the steam will be quickly condensed into liquid when it contacts the inner wall of the upper end of the flat heat pipe 407 which is being cooled all the time, and then the liquid will flow back to the lower part along the capillary pores of the capillary structure layer 408, so that the cooling liquid can be cooled in the process of absorbing the heat of the battery, instead of being cooled only in the heat exchanger, thereby limiting the temperature rise of the cooling liquid in the process of absorbing heat, and greatly improving the cooling effect on the battery.

Claims

1. A fast-charging heat dissipation device for automotive lithium batteries, comprising a lower vacuum heat-conducting cooling plate (1), a pad (2) disposed on the upper end of the lower vacuum heat-conducting cooling plate (1), and an upper vacuum heat-conducting cooling plate (3) disposed on the upper end of the pad (2); characterized in that: Also include the water cooling assembly arranged in the lower vacuum heat conduction cooling disc (1), and the steam condensing assembly arranged in the upper vacuum heat conduction cooling disc (3), the water cooling assembly includes the lower water cooling channel (401), the lower water collecting channel (402), the lower water outlet pipe (403), the lower heat exchanger (404), the lower water pump box (405), two divided water inlet pipes (406), flat heat pipes (407), capillary structure layer (408), the steam condensing assembly includes the upper water cooling channel (701), the upper water collecting channel (702), the upper water outlet pipe (703), the upper heat exchanger (704), the upper water pump box (705), the upper water inlet pipe (706), the cover (707), the fan (708);Four lower water cooling channels (401) are set in the lower vacuum heat conduction cooling disc (1), and the lower water cooling channel (401) is connected with the lower water collecting channel (402) on one side, and the lower water collecting channel (402) is connected with two lower water outlet pipes (403) at the front end, and the lower water outlet pipe (403) is connected with the lower heat exchanger (404) at one end.

2. The automobile lithium battery fast charging heat dissipation device according to claim 1, characterized in that: The lower heat exchanger (404) is connected with the lower water pump box (405) on one side through a pipeline, the lower water pump box (405) is connected with two divided water inlet pipes (406) on one side, the two divided water inlet pipes (406) are communicated with the lower water cooling channel (401) at the end, and the upper end of the lower water cooling channel (401) is connected with five flat heat pipes (407), and the inner wall of the flat heat pipe (407) is fixedly connected with the capillary structure layer (408).

3. The automobile lithium battery fast charging heat dissipation device according to claim 1, characterized in that: The upper end of the pad disc (2) is fixedly connected with a plurality of support separation plates (5), and the support separation plates (5) are distributed in the form of four rows and six columns, and the two support separation plates (5) in the same row are provided with a slot (6) formed on the pad disc (2), and the flat heat pipe (407) is inserted in the middle of the slot (6).

4. The automobile lithium battery fast charging heat dissipation device according to claim 1, characterized in that: Four groups of upper water cooling channels (701) are formed in the upper vacuum heat conduction cooling disc (3), each group of upper water cooling channels (701) is provided with two, and is respectively attached to the front and rear end faces of the flat heat pipe (407), and the upper water cooling channel (701) is fixedly connected with the pad disc (2) and the support separation plate (5).

5. The automobile lithium battery fast charging heat dissipation device according to claim 4, characterized in that: The upper water cooling channel (701) is connected with the upper water collecting channel (702) on one side, the upper water collecting channel (702) is connected with the upper water outlet pipe (703) at the front end, the upper water outlet pipe (703) is connected with the upper heat exchanger (704) at one end, and the upper heat exchanger (704) is connected with the upper water pump box (705) on one side through a pipeline.

6. The automobile lithium battery fast charging heat dissipation device according to claim 5, characterized in that: The upper water pump box (705) is connected with the upper water inlet pipe (706) on one side, the upper water inlet pipe (706) is communicated with the upper water cooling channel (701) at the end, and the rear ends of the lower heat exchanger (404) and the upper heat exchanger (704) are jointly installed with the cover (707), and the upper end of the cover (707) is installed with five fans (708).

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