CN113745698A

CN113745698A - Battery heat abstractor for new energy automobile

Info

Publication number: CN113745698A
Application number: CN202111036886.1A
Authority: CN
Inventors: 李晶
Original assignee: Jiangxi College of Applied Technology
Current assignee: Jiangxi College of Applied Technology
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-12-03
Anticipated expiration: 2041-09-06
Also published as: CN113745698B

Abstract

The invention discloses a battery heat dissipation device for a new energy automobile, which is combined with a new energy automobile battery pack into a whole and comprises temperature detection equipment, control equipment, cooling equipment and heating equipment, wherein the temperature detection equipment is used for detecting the temperature of the new energy automobile battery pack; the control device is used for comparing the battery temperature detected by the temperature detection device with a preset temperature threshold, and if the detected battery temperature is lower than a preset first temperature threshold, determining that the battery temperature is too low at the moment, and controlling the temperature rise device to heat the new energy automobile battery pack in a gas heating mode; and if the detected battery temperature is greater than a preset second temperature threshold value, judging that the battery temperature is too high at the moment, and controlling the cooling equipment to radiate the heating equipment in a liquid circulation mode. The battery has good integral heat dissipation or heating effect and high automation degree; low energy consumption and energy conservation.

Description

Battery heat abstractor for new energy automobile

Technical Field

The invention relates to the technical field of new energy automobiles, and particularly discloses a battery heat dissipation device for a new energy automobile.

Background

The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. The new energy automobile comprises a pure electric automobile, an extended range electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like.

With the development of new energy power batteries, the development of new energy automobiles with high density, high power and rapid charge and discharge is encouraged. The existing new energy automobile adopts air-cooled heat dissipation and cannot solve the problem of battery heat dissipation.

Therefore, the existing new energy automobile adopting the air-cooled battery heat dissipation mode cannot meet the overall requirement of battery heat dissipation, and is a technical problem to be solved urgently.

Disclosure of Invention

The invention provides a battery heat dissipation device for a new energy automobile, and aims to solve the technical problem that the whole requirement of battery heat dissipation cannot be met by adopting an air-cooled battery heat dissipation mode in the existing new energy automobile.

The invention discloses a battery heat dissipation device for a new energy automobile, which is combined with a battery pack of the new energy automobile into a whole, the battery heat dissipation device for the new energy automobile comprises temperature detection equipment, control equipment, cooling equipment and heating equipment, wherein,

the temperature detection equipment is used for detecting the temperature of the new energy automobile battery pack;

the control equipment is respectively electrically connected with the temperature detection equipment, the cooling equipment and the warming equipment and is used for comparing the battery temperature detected by the temperature detection equipment with a preset temperature threshold, and if the detected battery temperature is smaller than a preset first temperature threshold, the battery temperature is judged to be too low at the moment, the warming equipment is controlled to warm the battery pack of the new energy automobile in a gas heating mode; and if the detected battery temperature is greater than a preset second temperature threshold value, judging that the battery temperature is too high at the moment, and controlling the cooling equipment to radiate the heating equipment in a liquid circulation mode.

Further, new energy automobile group battery includes a plurality of battery bodies, cooling device includes the storage box, water absorption motor and liquid water conservancy diversion pipeline, liquid water conservancy diversion pipe connection is between storage box and medium case, the coolant liquid has been held in the storage box, controlgear includes the medium case, the medium case is located in the space between a plurality of battery bodies and is encircleed the battery body setting, controlgear is connected with the water absorption motor electricity, be used for when the battery temperature was too high, the control water absorption motor passes through the liquid water conservancy diversion pipeline with the coolant liquid that holds in the storage box and pumps to the medium incasement.

Furthermore, the cooling equipment further comprises a drainage motor, a radiator pipeline and a refrigeration scale, one end of the radiator pipeline is communicated with the storage box, the other end of the radiator pipeline is connected with the refrigeration scale, the refrigeration scale is arranged at the bottom of the battery body, and the control equipment is electrically connected with the drainage motor and used for controlling the drainage motor to enable cooling liquid contained in the storage box to pass through the refrigeration scale through the radiator pipeline and perform convection heat dissipation with external air.

Furthermore, the new energy automobile battery pack is provided with an air inlet, an air outlet and a gas guide pipeline connected between the air inlet and the air outlet, the air inlet is positioned at the bottom of the battery body, the air outlet is positioned at the top of the battery body, and the gas guide pipeline is laid in gaps among the plurality of battery bodies; the medium box is internally provided with a lifting floater, the control equipment further comprises a turning plate, a turning plate rotating shaft, a turning plate gear, a rack and a swing rod, the turning plate is arranged at an air inlet of the gas diversion pipeline, the turning plate rotating shaft is connected with the turning plate, the turning plate rotating shaft is sleeved in the turning plate gear, the turning plate gear is meshed with the rack, the swing rod is connected between the lifting floater and the rack, after cooling liquid stored in the storage box is pumped into the medium box through the liquid diversion pipeline, the lifting floater is supported by the cooling liquid under the action of buoyancy, the swing rod is driven to rotate, the turning plate is opened, and the gas diversion pipeline is driven to be switched on.

Further, the cooling device still includes the compression case, reciprocating piston, the evaporating case, the evaporating pipe, the honeycomb duct, the check valve plate, the heat dissipation grid, electric putter and valve plate, reciprocating piston locates in the compression case and can the up-and-down motion, be equipped with the refrigeration liquid on the evaporating case, the evaporating pipe, valve plate and electric putter are located outside the compression case, the check valve plate is located the entrance of compression case, honeycomb duct connection is between compression case and evaporating case, the heat dissipation grid is located on the outer wall of evaporating case, the valve plate is located between evaporating pipe and the evaporating case, electric putter is connected with the valve plate, be used for opening the valve plate, with the gas flow in the evaporating pipe in the evaporating case.

Further, heat conduction aluminum plate has been laid to battery body's surface, and the compression case erects on heat conduction aluminum plate and contacts with heat conduction aluminum plate.

Further, the intensification equipment includes heating gas line and heating cabinet, heating gas line's one end and medium box switch-on, heating gas line's the other end and heating cabinet switch-on mutually, one side that the heating cabinet is close to battery body is equipped with the heating scale, one side that the battery body was kept away from to the heating cabinet is equipped with the fan, controlgear is connected with heating scale and fan electricity, be used for when the battery temperature is low excessively, the heating of control heating scale, and the drive fan sends hot air into the medium box for the battery body heating.

Furthermore, a gas pipeline high point and a gas pipeline low point are arranged on the heating gas pipeline, the gas pipeline high point is arranged close to one end of the heating box, and the gas pipeline low point is arranged close to one end of the medium box.

Furthermore, the control equipment is electrically connected with the water absorption motor and used for controlling the water absorption motor to absorb the cooling liquid contained in the medium box into the storage box through the liquid diversion pipeline when the temperature of the battery is too low, the lifting floater descends to drive the swing rod to rotate, the turning plate is closed, and the gas diversion pipeline is driven to be closed.

Further, the control equipment is electrically connected with the drainage motor and used for turning off the drainage motor and stopping supplying the cooling liquid to the refrigeration scales when the temperature of the battery is too low.

The beneficial effects obtained by the invention are as follows:

the battery heat dissipation device for the new energy automobile provided by the invention adopts temperature detection equipment, control equipment, cooling equipment and heating equipment, and detects the temperature of the battery pack of the new energy automobile through the temperature detection equipment; the control device is used for comparing the battery temperature detected by the temperature detection device with a preset temperature threshold, and if the detected battery temperature is lower than a preset first temperature threshold, the battery temperature is judged to be too low at the moment, and the temperature rise device is controlled to heat the battery pack of the new energy automobile in a gas heating mode; and if the detected battery temperature is greater than a preset second temperature threshold value, judging that the battery temperature is too high at the moment, and controlling the cooling equipment to radiate the heating equipment in a liquid circulation mode. The battery heat dissipation device for the new energy automobile has the advantages that the overall heat dissipation or heating effect of the battery is good, and the automation degree is high; low energy consumption and energy conservation.

Drawings

Fig. 1 is a functional block diagram of an embodiment of a battery heat dissipation device for a new energy vehicle according to the present invention;

fig. 2 is a schematic perspective view of a first view of a battery heat sink for a new energy vehicle according to a first embodiment of the present invention;

fig. 3 is a schematic perspective view of a second view of a battery heat sink for a new energy vehicle according to a first embodiment of the present invention;

fig. 4 is a schematic perspective view of a first view of a second embodiment of the battery heat sink for a new energy vehicle according to the present invention;

fig. 5 is a schematic perspective view of a second embodiment of a battery heat sink for a new energy vehicle according to the present invention;

fig. 6 is a schematic perspective view of a third view of a battery heat sink for a new energy vehicle according to a second embodiment of the present invention;

fig. 7 is a schematic perspective view of a first view of a third embodiment of a battery heat sink for a new energy vehicle according to the present invention;

FIG. 8 is an enlarged partial view of portion A of FIG. 7;

fig. 9 is a schematic perspective view of a second view of a battery heat sink for a new energy vehicle according to a third embodiment of the present invention;

fig. 10 is a schematic perspective view of a third embodiment of a battery heat sink for a new energy vehicle according to the present invention.

The reference numbers illustrate:

10. a temperature detection device; 20. a control device; 30. cooling equipment; 40. a temperature raising device; 100. a battery body; 31. a storage box; 32. a media box; 33. a water absorption motor; 34. a liquid diversion pipeline; 35. a water discharge motor; 36. a radiator line; 37. refrigerating the scales; 111. an air inlet; 112. an exhaust port; 113. a gas diversion pipeline; 321. a lifting float; 21. turning over a plate; 22. a turning plate rotating shaft; 23. a flap gear; 24. a rack; 25. a swing rod; 381. a compression box; 391. an evaporation tank; 392. an evaporation tube; 393. a flow guide pipe; 394. a one-way valve plate; 395. a heat dissipation grid; 396. an electric push rod; 397. a valve plate; 200. a heat conducting aluminum plate; 41. a heating gas line; 42. a heating box; 421. heating the scale; 43. a fan; 411. a gas line high point; 412. gas line low point.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

As shown in fig. 1, a first embodiment of the present invention provides a battery heat sink for a new energy vehicle, which is integrated with a battery pack of the new energy vehicle, and includes a temperature detection device 10, a control device 20, a temperature reduction device 30, and a temperature increase device 40, where the temperature detection device 10 is configured to detect a temperature of the battery pack of the new energy vehicle; the control device 20 is electrically connected with the temperature detection device 10, the temperature reduction device 30 and the temperature rise device 40 respectively, and is used for comparing the battery temperature detected by the temperature detection device 10 with a preset temperature threshold, and if the detected battery temperature is smaller than a preset first temperature threshold, it is determined that the battery temperature is too low at the moment, the temperature rise device 40 is controlled to heat the new energy automobile battery pack in a gas heating mode; if the detected battery temperature is greater than the preset second temperature threshold value, it is determined that the battery temperature is too high at this time, and the cooling device 30 is controlled to dissipate heat of the heating device 40 in a liquid circulation manner.

In the above structure, please refer to fig. 1 to 10, the battery heat dissipation apparatus for a new energy vehicle provided in this embodiment includes a plurality of battery bodies 100, a temperature reduction device 30 includes a storage tank 31, a water absorption motor 33 and a liquid diversion pipeline 34, the liquid diversion pipeline 34 is connected between the storage tank 31 and a medium tank 32, a cooling liquid is contained in the storage tank 31, a control device 20 includes the medium tank 32, the medium tank 32 is disposed in a gap between the plurality of battery bodies 100 and is disposed around the battery bodies 100, the control device 20 is electrically connected to the water absorption motor 33, and is configured to control the water absorption motor 33 to pump the cooling liquid contained in the storage tank 31 into the medium tank 32 through the liquid diversion pipeline 34 when a battery temperature is too high. The cooling device 30 further comprises a water discharging motor 35, a radiator pipeline 36 and a refrigeration scale 37, one end of the radiator pipeline 36 is communicated with the storage box 31, the other end of the radiator pipeline 36 is connected with the refrigeration scale 37, the refrigeration scale 37 is arranged at the bottom of the battery body 100, and the control device 20 is electrically connected with the water discharging motor 35 and used for controlling the water discharging motor 35 to enable cooling liquid contained in the storage box 31 to pass through the refrigeration scale 37 through the radiator pipeline 36 and perform convection heat dissipation with external air. The new energy automobile battery pack is provided with an air inlet 111, an air outlet 112 and a gas guide pipeline 113 connected between the air inlet 111 and the air outlet 112, the air inlet 111 is positioned at the bottom of the battery bodies 100, the air outlet 112 is positioned at the top of the battery bodies 100, and the gas guide pipeline 113 is laid in gaps among the plurality of battery bodies 100; the medium box 32 is internally provided with a lifting float 321, the control device 20 further comprises a turning plate 21, a turning plate rotating shaft 22, a turning plate gear 23, a rack 24 and a swing rod 25, the turning plate 21 is arranged at an air inlet of the gas guide pipeline 113, the turning plate rotating shaft 22 is connected with the turning plate 21, the turning plate rotating shaft 22 is sleeved in the turning plate gear 23, the turning plate gear 23 is meshed with the rack 24, the swing rod 25 is connected between the lifting float 321 and the rack 24, after cooling liquid contained in the storage box 31 is pumped into the medium box 32 through the liquid guide pipeline 34, the lifting float 321 is supported by the cooling liquid under the action of buoyancy, the swing rod 25 is driven to rotate, the turning plate 21 is opened, and the gas guide pipeline 113 is driven to be communicated. The lifting floater 321 comprises a lifting rod, the lifting rod is provided with a sliding groove, the rack 24 is provided with a push block, one end of the swing rod 25 is matched with the sliding groove, and the other end of the swing rod 25 is matched with the push block. When the temperature of the battery is high, the cooling liquid stored in the storage box 31 is pumped into the medium box 32 through the water absorption motor 33. At this time, the heat dissipating liquid is wrapped around the battery body 100. The liquid continues to flow through the drainage motor 35 and passes through the refrigeration scale 37, and is in heat dissipation in a convection mode with the outside air. When liquid exists in the medium box 32, the lifting floater 321 is lifted by the cooling liquid due to buoyancy, and then the swinging rod 25 is driven to drive the turning plate 21 to open. When the vehicle moves forwards, air is conveyed to the top from the bottom of the battery and is discharged through the air inlet 111 and the gas guide pipeline 113, so that the heat dissipation effect is achieved, and the whole battery has a good heat dissipation effect and high automation degree; low energy consumption and energy conservation.

Preferably, referring to fig. 1 to 10, in the battery heat sink for a new energy vehicle provided by this embodiment, the temperature reduction device 30 further includes a compression box 381, a reciprocating piston, an evaporation box 391, an evaporation tube 392, a flow guide tube 393, a one-way valve plate 394, a heat dissipation grid 395, an electric push rod 396 and a valve plate 397, the reciprocating piston is disposed in the compression box 381 and can move up and down, the evaporation box 391 is provided with a refrigerant liquid, the evaporation tube 392, the valve plate 397 and the electric push rod 396 are located outside the compression box 381, the one-way valve plate 394 is located at an inlet of the compression box 381, the flow guide tube 393 is connected between the compression box 381 and the evaporation box 391, the heat dissipation grid 395 is disposed on an outer wall of the evaporation box 391, the valve plate 397 is located between the evaporation tube 392 and the evaporation box 391, and the electric push rod 396 is connected to the valve plate 397 for opening the valve plate 397 to allow a gas in the evaporation tube 392 to flow into the evaporation box 391. The outer surface of the battery body 100 is laid with a heat conductive aluminum plate 200, and the compression box 381 is erected on the heat conductive aluminum plate 200 and contacts with the heat conductive aluminum plate 200. The battery heat abstractor for new energy automobile that this embodiment provided, when the vehicle jolts, the reciprocating piston in compression case 381 can the up-and-down motion, and when the reciprocating piston up-and-down motion, the refrigeration liquid in evaporation case 391 is in the gasification state this moment, can be inhaled compression case 381 by the reciprocating piston in, has check valve plate 394 simultaneously and prevents that gas is out. At this time, the reciprocating piston continues to move, and the gas in the evaporation tank 391 is continuously sucked into the compression tank 381 and compressed and liquefied. During the compression process, heat is dissipated through the heat dissipation grid 395, the valve plate 397 is opened by the electric push rod 396, and the compressed and even liquefied gas flows into the evaporation tank 391 through the evaporation tube 392. The gas liquefies again in the inflow process, absorbs heat, absorbs the heat on the heat conduction aluminum plate 200, and thus, the temperature of the battery is reduced. The purpose of cooling the battery is achieved through the reciprocating circulation, the vehicle can bump when running, and energy is not consumed in the cooling process, so that energy is saved, and environmental pollution is reduced.

Further, referring to fig. 1 to 10, in the battery heat dissipation apparatus for a new energy vehicle provided in this embodiment, the temperature raising device 40 includes a heating gas pipeline 41 and a heating box 42, one end of the heating gas pipeline 41 is connected to the medium box 32, the other end of the heating gas pipeline 41 is connected to the heating box 42, a heating scale 421 is disposed on one side of the heating box 42 close to the battery body 100, a fan 43 is disposed on one side of the heating box 42 away from the battery body 100, and the control device 20 is electrically connected to the heating scale 421 and the fan 43, and is configured to control the heating scale 421 to heat when the battery temperature is too low, and drive the fan 43 to send hot air into the medium box 32 to heat the battery body 100. The heating gas line 41 is provided with a gas line high point 411 and a gas line low point 412, the gas line high point 411 being disposed near one end of the heating box 42 and the gas line low point 412 being disposed near one end of the medium box 32. The control device 20 is electrically connected with the water suction motor 33, and is used for controlling the water suction motor 33 to suck the cooling liquid contained in the medium tank 32 into the storage tank 31 through the liquid diversion pipeline 34 when the temperature of the battery is too low, the lifting floater 321 descends to drive the swing rod 25 to rotate, the turning plate 21 is closed, and the gas diversion pipeline 113 is driven to be closed. The control device 20 is electrically connected to the drain motor 35 for turning off the drain motor 35 and stopping the supply of the cooling liquid to the refrigerant scales 37 when the battery temperature is too low. In the battery heat sink for the new energy automobile provided by the embodiment, when the battery temperature is low, the water absorption motor 33 absorbs the cooling liquid from the medium tank 32 into the storage tank 31, and only air exists in the medium tank 32 at this time. Then, the heating scale 421 starts to be heated, and the fan 43 sends hot air into the medium box 32 to heat the battery body 100. Meanwhile, because there is no liquid in the medium box 32, the lifting float 321 will descend, and will drive the swing rod 25 and the turning plate 21 to reset, so as to block the air inlet 111, and the battery pack will begin to heat up rapidly. The battery heat dissipation device for the new energy automobile has the advantages that the overall battery heating effect is good, and the automation degree is high; low energy consumption and energy conservation.

As shown in fig. 1 to 10, the battery heat dissipation device for a new energy vehicle provided in this embodiment has the following operating principle:

the battery heat abstractor for new energy automobile that this embodiment provided, as an organic whole with the group battery, can be overheated to the battery heat dissipation at the battery, can also be when the battery temperature is crossed lowly, heat up for the group battery, guarantee that the group battery is at best operating temperature. The device adds a void between the plurality of battery bodies 100. A medium box 32 is added in the gap, and gas and liquid can flow through the medium box 32. Liquid circulation is used when heat is dissipated; gas heating is used when heating. The gas can keep the battery separated from the outside while heating, and the heat loss is reduced. When the battery temperature is high, the refrigerant fluid stored in the storage tank 31 is pumped into the medium tank 32 through the water suction motor 33. At this time, the heat dissipating liquid is wrapped around the battery body 100. The liquid continues to flow through the drainage motor 35 and passes through the refrigeration scale 37, and is in heat dissipation in a convection mode with the outside air. When liquid exists in the medium box 32, the lifting floater 321 is lifted by the cooling liquid due to buoyancy, and then the swinging rod 25 is driven to drive the turning plate 21 to open. When the vehicle moves forward, air is conveyed from the bottom of the battery to the top of the battery through the air inlet 111 and the air guide pipeline 113 and is exhausted, so that the heat dissipation effect is achieved. When the battery temperature is low, the water suction motor 33 sucks the coolant from the medium tank 32 into the storage tank 31, and only air exists in the medium tank 32. Then, the heating scale 421 starts to be heated, and the fan 43 sends hot air into the medium box 32 to heat the battery body 100. Meanwhile, because there is no liquid in the medium box 32, the lifting float 321 will descend, and will drive the swing rod 25 and the turning plate 21 to reset, so as to block the air inlet 111, and the battery pack will begin to heat up rapidly. The heating gas pipeline 41 is provided with a high-low drop point, so that liquid cannot flow into the heating scale 421 from the medium box 32 during refrigeration.

The battery heat abstractor for new energy automobile that this embodiment provided, some devices that newly add assist the battery refrigeration. When the vehicle bumps, the reciprocating piston in the compression box 381 moves up and down, and when the reciprocating piston moves up and down, the refrigerant liquid in the evaporation box 391 is in a gasified state at this time, and is sucked into the compression box 381 by the reciprocating piston, and meanwhile, a one-way valve plate 394 prevents gas from going out. At this time, the reciprocating piston continues to move, and the gas in the evaporation tank 391 is continuously sucked into the compression tank 381 and compressed and liquefied. During the compression process, heat is dissipated through the heat dissipation grid 395, the valve plate 397 is opened by the electric push rod 396, and the compressed and even liquefied gas flows into the evaporation tank 391 through the evaporation tube 392. The gas liquefies again in the inflow process, absorbs heat, absorbs the heat on the heat conduction aluminum plate 200, and thus, the temperature of the battery is reduced. The purpose of cooling the battery is achieved through the reciprocating circulation, the vehicle can jolt when running, and energy is not consumed in the cooling process.

Compared with the prior art, the battery heat dissipation device for the new energy automobile provided by the embodiment adopts the temperature detection equipment, the control equipment, the cooling equipment and the heating equipment, and detects the temperature of the battery pack of the new energy automobile through the temperature detection equipment; the control device is used for comparing the battery temperature detected by the temperature detection device with a preset temperature threshold, and if the detected battery temperature is lower than a preset first temperature threshold, the battery temperature is judged to be too low at the moment, and the temperature rise device is controlled to heat the battery pack of the new energy automobile in a gas heating mode; and if the detected battery temperature is greater than a preset second temperature threshold value, judging that the battery temperature is too high at the moment, and controlling the cooling equipment to radiate the heating equipment in a liquid circulation mode. The battery heat dissipation device for the new energy automobile provided by the embodiment has the advantages that the overall heat dissipation or heating effect of the battery is good, and the automation degree is high; low energy consumption and energy conservation.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A battery heat dissipation device for a new energy automobile is characterized by being combined with a battery pack of the new energy automobile into a whole, the battery heat dissipation device for the new energy automobile comprises a temperature detection device (10), a control device (20), a temperature reduction device (30) and a temperature rise device (40), wherein,

the temperature detection device (10) is used for detecting the temperature of the battery pack of the new energy automobile;

the control device (20) is electrically connected with the temperature detection device (10), the cooling device (30) and the warming device (40) respectively, and is used for comparing the battery temperature detected by the temperature detection device (10) with a preset temperature threshold, and if the detected battery temperature is smaller than a preset first temperature threshold, determining that the battery temperature is too low at the moment, controlling the warming device (40) to warm the battery pack of the new energy automobile in a gas heating mode; and if the detected battery temperature is greater than a preset second temperature threshold value, determining that the battery temperature is too high at the moment, and controlling the cooling equipment (30) to radiate the heating equipment (40) in a liquid circulation mode.

2. The battery heat sink for the new energy automobile according to claim 1, wherein the battery pack for the new energy automobile includes a plurality of battery bodies (100), the cooling equipment (30) comprises a storage tank (31), a water absorption motor (33) and a liquid diversion pipeline (34), the liquid guide pipeline (34) is connected between the storage tank (31) and the medium tank (32), the storage tank (31) is filled with cooling liquid, the control device (20) comprises a medium tank (32), the medium box (32) is arranged in a gap between the plurality of battery bodies (100) and surrounds the battery bodies (100), the control equipment (20) is electrically connected with the water absorption motor (33), and the water absorption motor (33) is controlled to pump the cooling liquid contained in the storage tank (31) into the medium tank (32) through the liquid diversion pipeline (34) when the temperature of the battery is overhigh.

3. The battery heat dissipation device for the new energy automobile as recited in claim 2, wherein the cooling device (30) further includes a drainage motor (35), a radiator pipeline (36), and a cooling scale (37), one end of the radiator pipeline (36) is connected to the storage tank (31), the other end of the radiator pipeline (36) is connected to the cooling scale (37), the cooling scale (37) is disposed at the bottom of the battery body (100), and the control device (20) is electrically connected to the drainage motor (35) and is configured to control the drainage motor (35) to allow the cooling liquid held in the storage tank (31) to pass through the cooling scale (37) through the radiator pipeline (36) and to perform convection heat dissipation with the outside air.

4. The battery heat dissipation device for the new energy automobile according to claim 3, wherein an air inlet (111), an air outlet (112), and a gas guiding pipeline (113) connected between the air inlet (111) and the air outlet (112) are provided on the battery pack of the new energy automobile, the air inlet (111) is located at the bottom of the battery body (100), the air outlet (112) is located at the top of the battery body (100), and the gas guiding pipeline (113) is laid in gaps between the plurality of battery bodies (100); the medium tank (32) is internally provided with a lifting floater (321), the control device (20) further comprises a turning plate (21), a turning plate rotating shaft (22), a turning plate gear (23), a rack (24) and a swing rod (25), the turning plate (21) is arranged at an air inlet of the gas guide pipeline (113), the turning plate rotating shaft (22) is connected with the turning plate (21), the turning plate rotating shaft (22) is sleeved in the turning plate gear (23), the turning plate gear (23) is meshed with the rack (24), the swing rod (25) is connected between the lifting floater (321) and the rack (24), after cooling liquid contained in the storage tank (31) is pumped into the medium tank (32) through the liquid guide pipeline (34), the lifting floater (321) is supported by the cooling liquid under the action of buoyancy to drive the swing rod (25) to rotate, and opening the turning plate (21) to drive the gas guide pipeline (113) to be communicated.

5. The battery heat sink for the new energy automobile as recited in claim 4, wherein the temperature reducing device (30) further comprises a compression box (381), a reciprocating piston, an evaporation box (391), an evaporation tube (392), a flow guide tube (393), a check valve plate (394), a heat dissipation grid (395), an electric push rod (396), and a valve plate (397), the reciprocating piston is disposed in the compression box (381) and can move up and down, the evaporation box (391) is provided with a refrigerant liquid, the evaporation tube (392), the valve plate (397), and the electric push rod (396) are disposed outside the compression box (381), the check valve plate (394) is disposed at an inlet of the compression box (381), the flow guide tube (393) is connected between the compression box (381) and the evaporation box (391), and the heat dissipation grid (395) is disposed on an outer wall of the evaporation box (391), the valve plate (397) is located between the evaporation pipe (392) and the evaporation box (391), and the electric push rod (396) is connected with the valve plate (397) and used for opening the valve plate (397) to enable the gas in the evaporation pipe (392) to flow into the evaporation box (391).

6. The battery heat sink for the new energy automobile as claimed in claim 5, wherein a heat conducting aluminum plate (200) is laid on an outer surface of the battery body (100), and the compression box (381) is erected on the heat conducting aluminum plate (200) and contacts with the heat conducting aluminum plate (200).

7. The battery heat sink for the new energy automobile according to claim 4, wherein the temperature raising device (40) includes a heating gas line (41) and a heating box (42), one end of the heating gas pipeline (41) is communicated with the medium box (32), the other end of the heating gas pipeline (41) is communicated with the heating box (42), one side of the heating box (42) close to the battery body (100) is provided with a heating scale (421), a fan (43) is arranged on one side of the heating box (42) far away from the battery body (100), the control device (20) is electrically connected with the heating scale (421) and the fan (43), the battery heating device is used for controlling the heating scale (421) to heat when the temperature of the battery is too low, and driving the fan (43) to send hot air into the medium box (32) to heat the battery body (100).

8. The battery heat sink for the new energy automobile as recited in claim 7, wherein a gas line high point (411) and a gas line low point (412) are provided on the heating gas line (41), the gas line high point (411) is provided near one end of the heating box (42), and the gas line low point (412) is provided near one end of the medium box (32).

9. The battery heat dissipation device for the new energy automobile as defined in claim 7, wherein the control device (20) is electrically connected to the water absorption motor (33) and configured to control the water absorption motor (33) to absorb the cooling fluid contained in the medium tank (32) into the storage tank (31) through the fluid diversion pipeline (34) when the battery temperature is too low, and the lifting float (321) descends to drive the swing rod (25) to rotate, close the flap (21) and drive the gas diversion pipeline (113) to close.

10. The battery heat sink for the new energy automobile as recited in claim 7, wherein the control device (20) is electrically connected to the drain motor (35) and is configured to shut down the drain motor (35) and stop supplying the cooling liquid to the cooling fins (37) when the battery temperature is too low.