A new energy automobile battery cooling and preheating device and a control method thereof

Abstract

The application discloses a new energy automobile battery cooling and preheating device and a control method thereof, and belongs to the technical field of new energy automobile battery cooling and preheating systems. The new energy automobile battery cooling and preheating device and the control method thereof comprise a battery body, a plurality of cooling pipes are arranged around the outer wall of the battery body, a first cooling plate and a second cooling plate are respectively connected to the top end and the bottom end of the plurality of cooling pipes in a lead-through mode, the first cooling plate and the second cooling plate are welded and sealed at the joint with the cooling pipes, a cooling sensor is installed on the top of the first cooling plate, a cooling liquid tank is arranged on one side of the second cooling plate, an outer shell is wrapped outside the cooling liquid tank, and a hand crank is rotationally connected to the side wall of the outer shell. The device can realize battery combustion early warning and flame-retardant functions, and simultaneously solves the problem of battery non-operation at low temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy automobile battery cooling and preheating system, more particularly to a new energy automobile battery cooling and preheating device and a control method thereof. BACKGROUND

[0002] The new energy automobile battery pack may have self-failure heating, installation damage heating, short-circuit heating and other phenomena, which may further cause spontaneous combustion or burning, thereby seriously threatening the personal safety of the driver and passengers.

[0003] In addition, since there is no good flame-retardant material in the heating spontaneous combustion environment of the new energy automobile battery system, the new energy automobile battery cannot be flame-retardant in a short time to reduce personal safety when burning.

[0004] The new energy automobile is difficult to popularize in high-latitude areas, mainly because the battery wakes up slowly in winter, and it is not easy to start the automobile, so a new energy automobile battery cooling and preheating device and a control method thereof are proposed to solve the above problems. SUMMARY

[0005] 1. Technical problem to be solved

[0006] In view of the problems in the prior art, the purpose of the present application is to provide a new energy automobile battery cooling and preheating device and a control method thereof, which can realize battery burning early warning and flame-retardant function, and solve the problem of battery low temperature not working.

[0007] 2. Technical scheme

[0008] To solve the above problems, the present application adopts the following technical scheme.

[0009] A new energy automobile battery cooling and preheating device, comprising a battery body;

[0010] A plurality of cooling pipes are arranged around the outer wall of the battery body, the plurality of cooling pipes are arranged in an arc flat structure, and the combination of the plurality of cooling pipes and the battery body is coated with thermal conductive silicone grease, the top end and the bottom end of the plurality of cooling pipes are respectively connected with a first cooling plate and a second cooling plate, the combination of the first cooling plate and the second cooling plate and the cooling pipe is welded and sealed, and the top of the first cooling plate is provided with a cooling sensor;

[0011] The second cooling plate is provided with a cooling liquid tank on one side, the cooling liquid tank is wrapped with an outer shell, and the side wall of the outer shell is rotatably connected with a hand crank;

[0012] The first circulating pipe and the second circulating pipe are respectively provided between the cooling liquid tank and the first cooling plate and the second cooling plate, and the same end of the first circulating pipe and the second circulating pipe is respectively connected in conduction with the first cooling plate and the second cooling plate, a circulating pump is installed on the first circulating pipe, the first circulating pipe is provided with two sections, and the two sections of the first circulating pipe are respectively connected in conduction with the output end and the input end of the circulating pump;

[0013] The top and the bottom end of the inner cavity of the cooling liquid tank are respectively connected in rotation with a driving wheel and a driven wheel, the outer wall of the driving wheel and the driven wheel is annularly provided with a wire slot, a transmission belt is installed on the inner side of the wire slot, a plurality of rubber plugs are equidistantly installed on the transmission belt, a first communication pipe is arranged between the driving wheel and the driven wheel, and the first communication pipe is connected with the transmission belt, a second communication pipe is connected in conduction with the top end of the outer wall of the first communication pipe, a liquid outlet is arranged at the corresponding position of the second communication pipe of the cooling liquid tank, and a liquid inlet is arranged below the liquid outlet.

[0014] A temperature sensor is installed on the inner wall of the cooling liquid tank.

[0015] Further, the first cooling plate and the second cooling plate are both provided in a hollow structure, the detection end of the cooling sensor extends into the inner cavity of the first cooling plate, and a first sealing element is installed at the joint of the detection end of the cooling sensor and the first cooling plate.

[0016] Further, the center of the surface of the driving wheel and the driven wheel is fixedly connected with a rotating shaft, the hand crank penetrates the cooling liquid tank, and the penetrating end of the hand crank is connected with the rotating shaft arranged at the driving wheel through a shaft coupling, and a second sealing element is installed at the joint of the cooling liquid tank and the hand crank.

[0017] Further, the outer side of the driving wheel and the driven wheel is fixedly connected with a mounting bracket, and the rotating shaft arranged on the driving wheel and the driven wheel is connected with the corresponding mounting bracket through a bearing.

[0018] Further, the rubber plug is provided in a circular structure, and the outer diameter of the rubber plug provided in a circular structure is matched with the inner diameter of the first communication pipe.

[0019] Further, a support assembly is arranged outside the second communication pipe.

[0020] The support assembly comprises a sleeve welded on the outer wall of the second communication pipe, a connecting rod symmetrically welded on the outer wall of the sleeve, and a mounting seat welded on the tail end of the connecting rod, and the mounting seat is fixedly connected with the inner wall of the cooling liquid tank through screws.

[0021] Further, the liquid outlet and the liquid inlet are respectively connected in conduction with the other end of the first circulating pipe and the second circulating pipe.

[0022] Further, the temperature sensor is provided with a wire, and the wire penetrates the cooling liquid tank, and a third sealing member is installed at the joint of the wire provided at the temperature sensor and the cooling liquid tank.

[0023] A control method of a new energy automobile battery cooling and preheating device, comprising the following steps:

[0024] In the first step, the cooling liquid tank is placed in the front trunk of the new energy automobile, and the cooling sensor and the temperature sensor are connected to the control system of the new energy automobile, and the temperature index of the cooling liquid antifreeze is displayed on the instrument panel of the new energy automobile.

[0025] In the second step, when the battery body temperature is too high, the circulating pump is connected to the circuit system of the new energy automobile, and the circulating pump is operated by the control system of the new energy automobile, the cooling liquid antifreeze in the cooling liquid tank is delivered to the first cooling plate through the first circulating pipe, then the cooling liquid is divided into each cooling pipe through the first cooling plate, and the cooling pipe is attached to the battery body, so that the heat on the battery body is taken away by the principle of heat transfer, then the cooling liquid antifreeze is collected in the second cooling plate, and then is returned to the cooling liquid tank through the second circulating pipe and circulates.

[0026] When the battery body temperature is too low, the cooling liquid antifreeze stores a certain amount of energy in the cooling liquid tank in low temperature areas, and when the temperature is relatively low, the manual pressure circulation is started, the hand crank is manually driven to rotate, the driving wheel is driven to rotate through the transmission belt, and the multiple rubber plugs installed on the transmission belt enter the inside of the first communication pipe in turn under the action of air pressure, the cooling liquid tank is sucked into the first communication pipe, then the cooling liquid antifreeze is sent into the first circulating pipe through the second communication pipe, the cooling liquid antifreeze in the cooling liquid tank is delivered to the first cooling plate through the first circulating pipe, then the cooling liquid is divided into each cooling pipe through the first cooling plate, and the cooling pipe is attached to the battery body, so that the heat is transferred to the battery body by the principle of heat transfer, then the cooling liquid antifreeze is collected in the second cooling plate, and then is returned to the cooling liquid tank through the second circulating pipe and circulates.

[0027] In the third step, after the battery body cooling or preheating is completed, the cooling liquid circulation is stopped.

[0028] 3. Beneficial effects

[0029] Compared with the prior art, the advantages of the present application are:

[0030] When the battery body temperature is too high, the circulating pump is connected to the circuit system of the new energy automobile, the circulating pump is operated through the control system of the new energy, the cooling liquid (antifreeze) in the cooling liquid tank is delivered to the first cooling plate through the first circulating pipe, then the cooling liquid is branched to each cooling pipe through the first cooling plate, the cooling pipe is attached to the battery body, so that the heat on the battery body is taken away by the principle of heat transfer, then the cooling liquid (antifreeze) is collected in the second cooling plate, and then is returned to the cooling liquid tank through the second circulating pipe, and the circulation is repeated, so that the battery combustion early warning and flame retardant function are solved.

[0031] When the battery body temperature is too low, the cooling liquid (antifreeze) can store certain energy in the cooling liquid tank in low temperature area, and when the temperature is relatively low, the manual pressure circulation can be started, the hand crank is driven by artificial driving to rotate, so that the driving wheel is driven to rotate through the transmission belt, so that the plurality of rubber plugs installed on the transmission belt enter the inside of the first communication pipe in turn, under the action of air pressure, the cooling liquid tank is sucked into the first communication pipe, then the cooling liquid (antifreeze) is sent into the first circulating pipe through the second communication pipe, the cooling liquid (antifreeze) in the cooling liquid tank is delivered to the first cooling plate through the first circulating pipe, then the cooling liquid is branched to each cooling pipe through the first cooling plate, the cooling pipe is attached to the battery body, so that the heat is transferred to the battery body by the principle of heat transfer, then the cooling liquid (antifreeze) is collected in the second cooling plate, and then is returned to the cooling liquid tank through the second circulating pipe, and the circulation is repeated, so that the battery temperature rises to the normal opening temperature range (0-40℃), and the problem of low temperature of the battery is solved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the application;

[0033] Figure 2 It is a schematic diagram of the cooling pipe structure of the application;

[0034] Figure 3 It is a schematic diagram of the internal section structure of the cooling liquid tank of the application;

[0035] Figure 4 It is a schematic diagram of the driving wheel structure of the application;

[0036] Figure 5 It is a schematic diagram of the support assembly structure of the application.

[0037] Explanation of reference numerals in the drawing:

[0038] 1, battery body; 2, cooling pipe; 3, first cooling plate; 4, second cooling plate; 5, cooling sensor; 6, cooling liquid tank; 7, outer shell; 8, hand crank; 9, first circulating pipe; 10, second circulating pipe; 11, circulating pump; 12, driving wheel; 13, driven wheel; 14, wire slot; 15, rotating shaft; 16, mounting bracket; 17, transmission belt; 18, rubber plug; 19, first communication pipe; 20, second communication pipe; 21, sleeve; 22, connecting rod; 23, mounting seat; 24, liquid outlet; 25, liquid inlet; 26, temperature sensor. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] Embodiment:

[0041] Please refer to Figures 1-5 A new energy automobile battery cooling and preheating device and a control method thereof, comprising a battery body 1;

[0042] A plurality of cooling pipes 2 are arranged around the outer wall of the battery body 1, and the top end and the bottom end of the plurality of cooling pipes 2 are respectively connected with a first cooling plate 3 and a second cooling plate 4 in a conductive manner, and the first cooling plate 3 and the second cooling plate 4 are welded and sealed at the joint with the cooling pipe 2, and the first cooling plate 3 is provided with a cooling sensor 5 on the top;

[0043] The second cooling plate 4 is provided with a cooling liquid tank 6 on one side, and the cooling liquid tank 6 is wrapped with an outer shell 7, and the side wall of the outer shell 7 is rotatably connected with a hand crank 8;

[0044] The first cooling plate 3 and the second cooling plate 4 are respectively provided with a first circulating pipe 9 and a second circulating pipe 10 between the cooling liquid tank 6, and the first circulating pipe 9 and the second circulating pipe 10 are respectively connected with the first cooling plate 3 and the second cooling plate 4 in a conductive manner at the same end, and the first circulating pipe 9 is provided with a circulating pump 11, and the first circulating pipe 9 is provided with two sections, and the two sections of the first circulating pipe 9 are respectively connected with the output end and the input end of the circulating pump 11 in a conductive manner;

[0045] The top and bottom of the inner cavity of the cooling liquid tank 6 are rotationally connected with a driving wheel 12 and a driven wheel 13, respectively, the outer wall of the driving wheel 12 and the driven wheel 13 is annularly provided with a wire slot 14, the inner side of the wire slot 14 is provided with a transmission belt 17, a plurality of rubber plugs 18 are equidistantly installed on the transmission belt 17, a first communication pipe 19 is arranged between the driving wheel 12 and the driven wheel 13, the first communication pipe 19 is connected with the transmission belt 17, a second communication pipe 20 is conductively connected with the top of the outer wall of the first communication pipe 19, a liquid outlet 24 is arranged at the corresponding position of the cooling liquid tank 6, and a liquid inlet 25 is arranged below the liquid outlet 24;

[0046] A temperature sensor 26 is installed on the inner wall of the cooling liquid tank 6;

[0047] It should be noted that the cooling liquid tank 6 is placed in the front trunk of the new energy vehicle, and the cooling sensor 5 and the temperature sensor 26 are connected to the control system of the new energy vehicle, and the temperature index of the cooling liquid (antifreeze) is displayed through the instrument panel of the new energy vehicle;

[0048] When the temperature of the battery body 1 is too high, the circulation pump 11 is connected to the circuit system of the new energy vehicle, and the circulation pump 11 is operated through the control system of the new energy vehicle, the cooling liquid (antifreeze) in the cooling liquid tank 6 is delivered into the first cooling plate 3 through the first circulation pipe 9, then the cooling liquid is branched to each cooling pipe 2 through the first cooling plate 3, the cooling pipe 2 is attached to the battery body 1, so as to utilize the principle of heat transfer to remove the heat on the battery body 1, then the cooling liquid (antifreeze) is collected in the second cooling plate 4, and then is returned to the cooling liquid tank 6 through the second circulation pipe 10, and is circulated in this way, so as to solve the battery combustion early warning and fire retardant function;

[0049] When the battery body 1 temperature is too low, the cooling liquid (anti-freezing liquid) can store certain energy through the cooling liquid tank 6 in low temperature areas, and when the temperature is relatively low, it can be opened manually by rotating the hand crank 8, thereby driving the driving wheel 12 to rotate, and driving the driven wheel 13 to rotate through the transmission belt 17, thereby making the multiple rubber plugs 18 installed on the transmission belt 17 enter the inside of the first communication pipe 19 in turn, under the action of air pressure, the cooling liquid tank 6 will be sucked into the first communication pipe 19, then the cooling liquid (anti-freezing liquid) is sent into the first circulation pipe 9 through the second communication pipe 20, and the cooling liquid (anti-freezing liquid) in the cooling liquid tank 6 is transported to the first cooling plate 3 through the first circulation pipe 9, then the cooling liquid is divided into the first cooling plate 3 to each cooling pipe 2, and the cooling pipe 2 is combined with the battery body 1, thereby utilizing the principle of heat transfer to transfer heat to the battery body 1, then the cooling liquid (anti-freezing liquid) is collected in the second cooling plate 4, then it is returned to the cooling liquid tank 6 through the second circulation pipe 10, and the cycle is repeated, so that the battery temperature rises to the normal opening temperature range (0-40℃), and the problem of low temperature of the battery is solved.

[0050] Referring to Figure 2 , the plurality of cooling pipes 2 are arranged in an arc flat structure, and the plurality of cooling pipes 2 are coated with heat-conducting silicone grease at the junction with the battery body 1;

[0051] It should be noted that the contact area between the cooling pipe 2 and the battery body 1 can be increased, and the setting of the silicone grease can improve the heat transfer effect.

[0052] Referring to Figure 1 , Figure 3 , the first cooling plate 3 and the second cooling plate 4 are arranged in a hollow structure, the detection end of the cooling sensor 5 extends into the inner cavity of the first cooling plate 3, and the first sealing member is installed at the junction of the detection end of the cooling sensor 5 and the first cooling plate 3, the temperature sensor 26 is provided with a wire, and the wire penetrates the cooling liquid tank 6, and the third sealing member is installed at the junction of the cooling liquid tank 6 and the wire provided at the temperature sensor 26;

[0053] It should be noted that while monitoring the cooling liquid (anti-freezing liquid), the sealing effect is ensured to prevent leakage of the cooling liquid (anti-freezing liquid).

[0054] Referring to Figure 1 , Figure 3 , Figure 4A rotating shaft 15 is fixedly connected to the center of both sides of the driving wheel 12 and the driven wheel 13. A hand crank 8 passes through the coolant tank 6, and the end of the hand crank 8 is connected to the rotating shaft 15 set at the driving wheel 12 through a coupling. A second seal is installed at the junction of the coolant tank 6 and the hand crank 8. Mounting brackets 16 are fixedly connected to the outside of the driving wheel 12 and the driven wheel 13. The rotating shafts 15 set on the driving wheel 12 and the driven wheel 13 are connected to the corresponding mounting brackets 16 through bearings.

[0055] It should be noted that while ensuring that the power on the hand crank 8 is transmitted normally to the drive wheel 12, leakage can be prevented at the joint between the hand crank 8 and the coolant tank 6.

[0056] See Figure 3 , Figure 5 The rubber stopper 18 is circular in shape, and the outer diameter of the circular rubber stopper 18 is adapted to the inner diameter of the first connecting tube 19.

[0057] It should be noted that ensuring the airtightness of the joint between the rubber stopper 18 and the inner wall of the first connecting pipe 19 is necessary to allow the coolant (antifreeze) to be pumped normally.

[0058] See Figure 3 , Figure 5 The second connecting pipe 20 is provided with a support component on its exterior;

[0059] The support assembly includes a sleeve 21 welded to the outer wall of the second connecting pipe 20, a connecting rod 22 symmetrically welded to the outer wall of the sleeve 21, and a mounting seat 23 welded to the tail end of the connecting rod 22. The mounting seat 23 is fixedly connected to the inner wall of the coolant tank 6 by screws.

[0060] It should be noted that it provides stable support for the second connecting pipe 20 and the first connecting pipe 19.

[0061] See Figure 1 , Figure 3 The outlet 24 and the inlet 25 are respectively connected to the other end of the first circulation pipe 9 and the second circulation pipe 10.

[0062] It should be noted that the coolant (antifreeze) can be circulated to cool and preheat the battery body 1.

[0063] In use: when the battery body 1 temperature is too high, through the circulation pump 11 access to the circuit system of new energy vehicles, and through the new energy control system to the circulation pump 11 operation, through the first circulating pipe 9 in the cooling liquid tank 6 cooling liquid (antifreeze) is transported to the first cooling plate 3, then through the first cooling plate 3 cooling liquid shunt to each cooling pipe 2, through the cooling pipe 2 and battery body 1 is in line with, so as to utilize the principle of heat transfer away the heat on the battery body 1, then make the cooling liquid (antifreeze) is gathered in the second cooling plate 4, then again through the second circulating pipe 10 back to the cooling liquid tank 6, and in this cycle, solve the battery combustion early warning and flame retardant function;

[0064] When the battery body 1 temperature is too low, the cooling liquid (antifreeze) in low temperature area can store certain energy through the cooling liquid tank 6, temperature is relatively low when can be through the opening of manual pressure cycle form, through artificial drive hand crank 8 rotation, thereby driving the driving wheel 12 rotation, and through the transmission belt 17 driving the driven wheel 13 rotation, so that the transmission belt 17 installed on a plurality of rubber plug 18 in turn into the first communication pipe 19 inside, under the action of air pressure, cooling liquid tank 6 will be sucked into the first communication pipe 19, then through the second communication pipe 20 cooling liquid (antifreeze) is sent into the first circulating pipe 9, through the first circulating pipe 9 cooling liquid tank 6 cooling liquid (antifreeze) is transported to the first cooling plate 3, then through the first cooling plate 3 cooling liquid shunt to each cooling pipe 2, through the cooling pipe 2 and battery body 1 is in line with, so as to utilize the principle of heat transfer to the battery body 1 on the heat, then make the cooling liquid (antifreeze) is gathered in the second cooling plate 4, then again through the second circulating pipe 10 back to the cooling liquid tank 6, and in this cycle, let the battery temperature rises to the normal opening temperature range (0-40℃), solve the problem of low temperature battery does not work.

[0065] The above, only for the preferred specific embodiments of the present application; but the protection scope of the present application is not limited to this. Any skilled in the art of the technical personnel in the technical range disclosed by the present application, according to the technical scheme of the present application and its improvement concept equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A cooling and preheating device for a new energy vehicle battery, characterized in that: Including the battery body (1); The battery body (1) has multiple cooling pipes (2) arranged around its outer wall. The multiple cooling pipes (2) are all arranged in an arc-shaped flat structure. The joint between the multiple cooling pipes (2) and the battery body (1) is coated with thermally conductive silicone grease. The top and bottom ends of the multiple cooling pipes (2) are respectively connected to a first cooling plate (3) and a second cooling plate (4). The joint between the first cooling plate (3) and the second cooling plate (4) and the cooling pipes (2) is welded and sealed. A cooling sensor (5) is installed on the top of the first cooling plate (3). A coolant tank (6) is provided on one side of the second cooling plate (4). The coolant tank (6) is covered with an outer shell (7). A hand crank (8) is rotatably connected to the side wall of the outer shell (7). A first circulation pipe (9) and a second circulation pipe (10) are respectively provided between the coolant tank (6), the first cooling plate (3), and the second cooling plate (4). The first circulation pipe (9) and the second circulation pipe (10) are connected to the first cooling plate (3) and the second cooling plate (4) at the same end. A circulation pump (11) is installed on the first circulation pipe (9). The first circulation pipe (9) is provided with two sections, and the two sections of the first circulation pipe (9) are connected to the output end and the input end of the circulation pump (11) respectively. The top and bottom of the inner cavity of the coolant tank (6) are respectively rotatably connected to a drive wheel (12) and a driven wheel (13). The outer walls of the drive wheel (12) and the driven wheel (13) are provided with a groove (14). A transmission belt (17) is installed inside the groove (14). Multiple rubber plugs (18) are installed at equal intervals on the transmission belt (17). A first connecting pipe (19) is provided between the drive wheel (12) and the driven wheel (13), and the first connecting pipe (19) is connected to the transmission belt (17). A second connecting pipe (20) is connected to the top of the outer wall of the first connecting pipe (19). The second connecting pipe (20) has an outlet (24) at the corresponding position of the coolant tank (6), and an inlet (25) is provided below the outlet (24). A temperature sensor (26) is installed on the inner wall of the coolant tank (6).

2. The new energy vehicle battery cooling and preheating device according to claim 1, characterized in that: The first cooling plate (3) and the second cooling plate (4) are both hollow structures. The detection end of the cooling sensor (5) extends into the inner cavity of the first cooling plate (3), and a first sealing element is installed at the junction of the detection end of the cooling sensor (5) and the first cooling plate (3).

3. The new energy vehicle battery cooling and preheating device according to claim 1, characterized in that: A rotating shaft (15) is fixedly connected to the center of both sides of the driving wheel (12) and the driven wheel (13). The hand crank (8) passes through the coolant tank (6), and the end of the hand crank (8) is connected to the rotating shaft (15) set at the driving wheel (12) through a coupling. A second seal is installed at the junction of the coolant tank (6) and the hand crank (8).

4. The new energy vehicle battery cooling and preheating device according to claim 3, characterized in that: The driving wheel (12) and the driven wheel (13) are both fixedly connected to the outer side of the mounting bracket (16), and the rotating shaft (15) provided on the driving wheel (12) and the driven wheel (13) are connected to the corresponding mounting bracket (16) through bearings.

5. The new energy vehicle battery cooling and preheating device according to claim 1, characterized in that: The rubber stopper (18) is circular in shape, and the outer diameter of the circular rubber stopper (18) is adapted to the inner diameter of the first connecting tube (19).

6. The new energy vehicle battery cooling and preheating device according to claim 1, characterized in that: The second connecting pipe (20) is provided with a support component on its exterior; The support assembly includes a sleeve (21) welded to the outer wall of the second connecting pipe (20), a connecting rod (22) symmetrically welded to the outer wall of the sleeve (21), and a mounting seat (23) welded to the tail end of the connecting rod (22). The mounting seat (23) is fixedly connected to the inner wall of the coolant tank (6) by screws.

7. The new energy vehicle battery cooling and preheating device according to claim 1, characterized in that: The outlet (24) and inlet (25) are respectively connected to the other end of the first circulation pipe (9) and the second circulation pipe (10).

8. The new energy vehicle battery cooling and preheating device according to claim 1, characterized in that: A wire is provided at the temperature sensor (26), and the wire passes through the coolant tank (6). A third seal is installed at the junction of the coolant tank (6) and the wire provided at the temperature sensor (26).

9. A control method for a new energy vehicle battery cooling and preheating device as described in any one of claims 1-8, comprising the following steps: The first step is to place the coolant tank (6) in the front trunk of the new energy vehicle, and at the same time connect the cooling sensor (5) and the temperature sensor (26) to the control system of the new energy vehicle, and display the temperature index of the coolant through the instrument panel of the new energy vehicle. The second step is that when the battery body (1) is too hot, the circulation pump (11) is connected to the circuit system of the new energy vehicle, and the circulation pump (11) is operated by the control system of the new energy vehicle. The coolant in the coolant tank (6) is transported to the first cooling plate (3) through the first circulation pipe (9). Then the coolant is distributed to each cooling pipe (2) through the first cooling plate (3). The cooling pipe (2) is in contact with the battery body (1), thereby using the principle of heat transfer to remove the heat on the battery body (1). Then the coolant is collected in the second cooling plate (4) and then flows back to the coolant tank (6) through the second circulation pipe (10), and the cycle continues. When the battery body (1) temperature is too low, the coolant stores a certain amount of energy in the coolant tank (1) in low-temperature areas. When the temperature is relatively low, the manual pressure circulation is activated by manually driving the hand crank (8) to rotate, thereby driving the drive wheel (12) to rotate, and driving the driven wheel (13) to rotate through the transmission belt (17). This causes the multiple rubber plugs (18) installed on the transmission belt (17) to enter the inner side of the first connecting pipe (19) in sequence. Under the action of air pressure, the coolant tank (6) will be sucked into the first connecting pipe (19), and then... Coolant is fed into the first circulation pipe (9) through the second connecting pipe (20), and the coolant in the coolant tank (6) is transported to the first cooling plate (3) through the first circulation pipe (9). Then, the coolant is distributed to each cooling pipe (2) through the first cooling plate (3). The cooling pipe (2) is in contact with the battery body (1), so that heat is transferred to the battery body (1) by means of heat transfer principle. Then, the coolant is collected in the second cooling plate (4) and then flows back to the coolant tank (6) through the second circulation pipe (10), and this cycle is repeated. The third step is to stop the circulation of coolant after the battery body (1) has been cooled or preheated.

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