Battery pack heating device for new energy vehicle

Abstract

The invention relates to the technical field of battery pack heating, and provides a new energy vehicle battery pack heating device which comprises a battery pack set and further comprises a U-shaped heat conduction plate, a heat conduction pipe set and a fuel gas heating mechanism, the battery pack set is installed in the U-shaped heat conduction plate, the U-shaped heat conduction plate makes contact with the battery pack set, the heat conduction pipe set is arranged in the U-shaped heat conduction plate, and the fuel gas heating mechanism is arranged in the U-shaped heat conduction plate. The fuel gas heating mechanism is communicated with the heat conduction pipe set and used for heating the U-shaped heat conduction plate, the fuel gas heating mechanism comprises a heating base, an ignition heating assembly with a gas mixing function, a spiral heat conduction smoke exhaust pipe and a heat conduction assembly, a heating box and an ignition box are arranged on the heating base, and the ignition box penetrates through and is arranged on one side of the ignition box in a sealed mode. By means of the technical scheme, the problems that in the background technology, a new energy battery pack in the prior art adopts an internal heating mode, power consumption is large, and the heating coverage rate is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack heating, and in particular to a battery pack heating device for a new energy vehicle. Background Art

[0002] New energy vehicle battery packs are the core components of electric vehicles, responsible for providing continuous and stable power for the vehicle. These battery packs usually use ternary lithium battery technology, which has the characteristics of high energy, high power, and high energy density. They can be efficiently recycled under various charge states to ensure the normal operation of the vehicle.

[0003] Because, in a low temperature environment, the chemical reaction rate of the battery slows down, resulting in a significant reduction in the battery's discharge capacity and charging efficiency. Specifically, low temperatures will increase the internal resistance of the battery, thereby affecting the battery's output power and capacity. In addition, low temperatures will cause the chemical substances inside the battery to become viscous, reducing the ion conductivity, further affecting the battery's performance, so the battery pack on new energy vehicles needs to be heated.

[0004] In the prior art, the heating method for battery packs on new energy vehicles generally adopts internal heating. By installing a heating relay in the battery pack, the heating relay in the battery pack will close during driving to provide heating function for the power battery. This helps to quickly increase the battery temperature in a low temperature environment, thereby improving the charging and discharging power of the power battery and making the vehicle's power performance better. However, although this heating method can realize the heating operation of the battery pack, the heating conditions are greatly limited. First of all, the use of heating relays not only consumes a lot of power, which will greatly reduce the range of new energy vehicles, but also after the vehicle stops and starts, most of them are in a dormant state. In cold seasons, it cannot provide the required heat to the battery pack. In addition, the heating relay is placed inside the battery pack. It is difficult to cover the entire battery pack when heating the battery pack, and the heating coverage rate is poor. Summary of the invention

[0005] The present invention provides a battery pack heating device for new energy vehicles, which is used to solve the problem mentioned in the background technology that the new energy battery pack in the prior art adopts an internal heating method, which not only consumes a lot of electricity but also has a low heating coverage rate.

[0006] The technical solution of the present invention is as follows: A battery pack heating device for a new energy vehicle includes a battery pack group, a U-shaped heat conducting plate, a heat conducting pipe group and a gas heating mechanism; The battery pack is installed in the U-shaped heat conductive plate, and the U-shaped heat conductive plate is in contact with the battery pack; The heat conduction pipe group is arranged in the U-shaped heat conduction plate; The gas heating mechanism is connected to the heat conducting pipe group and is used for heating the U-shaped heat conducting plate; Wherein, the gas heating mechanism comprises a heating base, an ignition heating component with a gas mixing function, a spiral heat-conducting smoke exhaust pipe and a heat conduction component; The heating base is provided with a heating box and an ignition box, the ignition box penetrates and is sealed on one side of the ignition box, and a heating cavity is formed between the ignition box and the heating box; The ignition heating assembly is arranged in the ignition box and is used to provide heat; One end of the spiral heat-conducting smoke exhaust pipe is sealed and connected to the ignition box, the other end of the spiral heat-conducting smoke exhaust pipe is sealed and penetrated to the heating box, and the spiral heat-conducting smoke exhaust pipe is arranged in the heating cavity; The heat conduction component is arranged on one side of the heating box, and the heat conduction component is communicated with the heating cavity for conducting the heat conducting medium.

[0007] As a preferred technical solution of the present application, the ignition and heating assembly includes a conical ignition cover, an air intake power group, an air delivery group with an air mixing function, and an automatic igniter; The conical ignition cover is arranged in the ignition box, and a gas outlet cover with holes is arranged on one side of the conical ignition cover close to the heating box, and the conical ignition cover divides the ignition box into an air intake area and an ignition area; The air intake power group is arranged on one side of the ignition box, and the air intake power group penetrates into the conical ignition cover; The gas delivery group is arranged in communication between the conical ignition cover and the ignition box; The automatic igniter is installed on the ignition box, and the ignition end of the automatic igniter penetrates and is sealed in the ignition area. The ignition end of the automatic igniter is located at one side of the perforated air outlet cover.

[0008] Further on the basis of the above scheme, the air intake power group includes a power rotating rod, a power motor and a power fan; The power rotating rod penetrates and is sealed and rotatably arranged on a side of the conical ignition cover away from the heating box; The power motor is installed on one side of the heating box, and the output end of the power motor is connected to one end of the power rotating rod; The power fan is mounted on the power rotating rod. The power fan is located in the conical ignition cover. The power fan divides the conical ignition cover into a gas mixing cavity and a gas transmission cavity.

[0009] Further on the basis of the above scheme, the gas transmission group includes an air gas transmission pipe, a ring gas transmission pipe, a gas gas transmission pipe, a gas regulating valve and a gas mixing baffle; The air delivery pipes are provided in plurality, the air delivery pipes are connected and arranged between the conical ignition cover and the ignition box, the air delivery pipes are connected to the gas mixing cavity, and a gas delivery one-way valve is installed on the air delivery pipes; The annular air delivery pipe is sleeved on the conical ignition cover, and a plurality of short air intake pipes are connected between the annular air delivery pipe and the conical ignition cover, and the short air intake pipes correspond to the air delivery pipes one by one; One end of the gas delivery pipe is connected to the annular gas delivery pipe, and the other end of the gas delivery pipe passes through and is sealed on the ignition box; The gas regulating valve is installed on the gas transmission pipe; There are multiple air mixing baffles, each of which corresponds to the air intake short pipe one by one. The air mixing baffle is arranged in the conical ignition cover, is located on one side of the air intake short pipe and the air supply pipe, and is located between the air intake short pipe and the power fan.

[0010] As a preferred technical solution of the present application, the heat conduction component includes a heat conduction pump, a heat exchange baffle, a liquid suction pipe and a liquid discharge pipe; The heat conduction pump is installed on one side of the heating box; The heat exchange baffle is sealed and arranged in the heating box, and the heat exchange baffle divides the heating cavity into a heating cavity 1 and a heating cavity 2. The liquid inlet end of the heat conduction pump is connected to the heating cavity 1, and the liquid infusion end of the heat conduction pump is connected to the heating cavity 2. The liquid suction pipes are provided in plurality, and the liquid suction pipes are arranged in communication between the first heating chamber and the heat conduction pipe group; The drain pipes are provided in plurality and are arranged in communication between the second heating chamber and the heat conduction pipe group.

[0011] On the basis of the above scheme, the heat transfer tube group includes a heat exchange main tube, a heat exchange secondary tube and a U-shaped heat exchange tube; The heat exchange main pipe is arranged on one side of the U-shaped heat conducting plate, and the heat exchange main pipe is connected with the plurality of drain pipes; The heat exchange slave pipe is arranged on one side of the U-shaped heat conducting plate, and the heat exchange slave pipe is connected with a plurality of the liquid suction pipes; A plurality of U-shaped heat exchange tubes are provided, and the U-shaped heat exchange tubes are connected and arranged between the main heat exchange tube and the secondary heat exchange tube, and the U-shaped heat exchange tubes are located in the U-shaped heat conducting plate.

[0012] On the basis of the above-mentioned solution, a gas storage component is further provided on one side of the gas heating mechanism, and the gas storage component is connected to the gas transmission pipe.

[0013] Further on the basis of the above scheme, the gas storage assembly includes a gas storage tank and a gas delivery pipe; The gas storage tank is connected to the gas transmission pipe; The air supply pipe is connected to the fuel gas storage tank, and an air supply valve is installed on the air supply pipe.

[0014] In order to facilitate the detection of the gas pressure in the gas storage tank, a gas pressure detection sensor is also installed on the gas storage tank.

[0015] In order to facilitate the detection of the temperature in the heating box, two temperature sensors are installed on the heating box, which are used to detect the temperature in heating chamber one and heating chamber two respectively.

[0016] The working principle and beneficial effects of the present invention are: 1. In the present invention, when installing the battery pack, the battery pack is installed in the U-shaped heat conductive plate, and then the gas storage tank is filled with liquefied gas in advance, and the heating cavity, the liquid suction pipe, the liquid discharge pipe, the heat exchange main pipe, the heat exchange slave pipe and the U-shaped heat exchange pipe are filled with heat transfer liquid, and the battery pack is protected by the U-shaped heat conductive plate to prevent the battery pack from leaking after being hit; 2. The present invention starts the power motor when heat is generated, and the output end of the power motor drives the power rotating rod to rotate, and the rotation of the power rotating rod drives the power fan to rotate. When the power fan rotates, under the action of air pressure, the external gas enters the conical ignition cover through the air gas pipe and the gas supply one-way valve, and at the same time, the gas regulating valve is opened, and the gas liquefied gas in the gas storage tank enters the conical ignition cover through the gas gas pipe, the gas regulating valve, the annular gas pipe and the short intake pipe. When the gas liquefied gas and the external gas enter the conical ignition cover at the same time, they will collide and mix with each other due to the combination of the gas mixing baffle, and the mixed gas will be rotated by the power fan. The mixed gas will be ejected through the perforated gas outlet hood. When the mixed gas is ejected from the perforated gas outlet hood, the automatic igniter is started to ignite the gas ejected from the perforated gas outlet hood. After the gas is ejected from the perforated gas outlet hood and ignited, the burning gas will fill the entire ignition area, and the burning gas will heat the ignition box. Through the heat conduction of the ignition box or the heat transfer liquid in the heating cavity, the smoke generated in the ignition area will be discharged from the ignition area along the spiral heat conduction exhaust pipe. When the smoke flows in the spiral heat conduction pipe, the heat contained in the smoke will also be conducted to the heat transfer liquid in the heating cavity through the spiral heat conduction pipe, so as to heat the heat transfer liquid. 3. In the present invention, when heating the battery pack, after heating the heat transfer liquid in the heating cavity, the heat transfer pump is started, and the heat transfer liquid in the heating chamber one re-enters the heating chamber one along the heating chamber two, the discharge pipe, the heat exchange slave pipe, the U-shaped heat exchange pipe, the heat exchange main pipe and the liquid suction pipe, and the heat transfer liquid is circulated. By continuously heating the flowing heat transfer liquid, the heat in the heat transfer liquid is transferred to the U-shaped heat transfer plate under the action of heat conduction, and the battery pack is heated by the U-shaped heat transfer plate. This heating method can not only ensure that the combustion heating mechanism is away from the battery pack and will not cause potential danger to the battery pack, but also has a fast heating speed. At the same time, the heat generated can also be transferred to the new energy vehicle through the remaining heat transfer equipment, and the utilization rate of the generated heat is high. It can also effectively solve the problem of large power consumption and potential danger of the heating relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a schematic diagram of a partial cross-section structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle; Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at B in the middle; Figure 4 It is a partial cross-sectional structural schematic diagram of the cooperation of the heating base, the heating box, the ignition box, the spiral heat-conducting smoke exhaust pipe and the gas heating mechanism in the present invention; Figure 5 It is a partial cross-sectional structural schematic diagram of the cooperation of the heat pipe group, the heating box, the ignition box, the heat pump and the heat exchange baffle of the present invention; Figure 6 It is a schematic diagram of the overall structure of the present invention.

[0019] The numbers in the figure represent: 001, heat pipe group; 002, gas heating mechanism; 003, gas storage assembly; 1. Battery pack; 2. U-shaped heat conduction plate; 3. Heating base; 4. Heating box; 5. Ignition box; 6. Spiral heat conduction exhaust pipe; 7. Conical ignition cover; 8. Exhaust cover with holes; 9. Automatic igniter; 10. Power lever; 11. Power motor; 12. Power fan; 13. Air pipe; 14. Gas check valve; 15. Annular pipe; 16. Inlet short pipe; 17. Gas pipe; 18. Gas regulating valve; 19. Gas mixing baffle; 20. Heat pump; 21. Heat exchange baffle; 22. Liquid suction pipe; 23. Liquid discharge pipe; 24. Heat exchange main pipe; 25. Heat exchange slave pipe; 26. U-shaped heat exchange pipe; 27. Gas storage tank; 28. Air pipe; 29. ​​Air valve; 30. Air pressure detection sensor; 31. Temperature sensor. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 6 As shown, this embodiment proposes a battery pack heating device for a new energy vehicle, including a battery pack group 1, a U-shaped heat conductive plate 2, a heat conductive pipe group 001 and a gas heating mechanism 002. The battery pack group 1 is installed in the U-shaped heat conductive plate 2, and the U-shaped heat conductive plate 2 is in contact with the battery pack group 1. By arranging the battery pack group 1 in the U-shaped heat conductive plate 2, the anti-collision performance of the battery pack group 1 can also be effectively improved.

[0022] As mentioned above, the heat-conducting pipe group 001 is arranged in the U-shaped heat-conducting plate 2 , and the gas heating mechanism 002 is connected to the heat-conducting pipe group 001 for heating the U-shaped heat-conducting plate 2 .

[0023] The gas heating mechanism 002 includes a heating base 3, an ignition and heating component with a gas mixing function, a spiral heat-conducting smoke exhaust pipe 6 and a heat conduction component. A heating box 4 and an ignition box 5 are arranged on the heating base 3. The ignition box 5 is penetrated and sealed on one side of the ignition box 5. A heating cavity is formed between the ignition box 5 and the heating box 4. The ignition and heating component is arranged in the ignition box 5 to provide heat.

[0024] As mentioned above, a gas storage component 003 is also provided on one side of the gas heating mechanism 002, and the gas storage component 003 is connected to the gas transmission pipe 17. The gas storage component 003 includes a gas storage tank 27 and an air supply pipe 28. The gas storage tank 27 is connected to the gas transmission pipe 17, and the air supply pipe 28 is connected and arranged on the gas storage tank 27. An air supply valve 29 is installed on the air supply pipe 28. In order to facilitate the detection of the gas pressure in the gas storage tank 27, a pressure detection sensor 30 is also installed on the gas storage tank 27.

[0025] Specifically, by opening the gas supply valve 29, the gas storage tank 27 can be filled with liquefied gas through the gas supply pipe 28 for combustion.

[0026] Among them, the ignition and heating assembly includes a conical ignition cover 7, an air intake power group, an air supply group with an air mixing function and an automatic igniter 9. The conical ignition cover 7 is arranged in the ignition box 5. A perforated air outlet cover 8 is arranged on the side of the conical ignition cover 7 close to the heating box 4. The conical ignition cover 7 divides the ignition box 5 into an air intake area and an ignition area. The air intake power group is arranged on one side of the ignition box 5, and the air intake power group passes through the conical ignition cover 7. The air supply group is connected and arranged between the conical ignition cover 7 and the ignition box 5. The automatic igniter 9 is installed on the ignition box 5. The ignition end of the automatic igniter 9 passes through and is sealed in the ignition area. The ignition end of the automatic igniter 9 is located on one side of the perforated air outlet cover 8.

[0027] Among them, the air intake power group includes a power rotating rod 10, a power motor 11 and a power fan 12. The power rotating rod 10 penetrates and is sealed and rotatably arranged on the side of the conical ignition cover 7 away from the heating box 4. The power motor 11 is installed on one side of the heating box 4. The output end of the power motor 11 is connected to one end of the power rotating rod 10. The power fan 12 is installed on the power rotating rod 10. The power fan 12 is located in the conical ignition cover 7. The power fan 12 divides the conical ignition cover 7 into a mixing cavity and a gas transmission cavity.

[0028] The gas delivery group includes an air delivery pipe 13, an annular gas delivery pipe 15, a gas delivery pipe 17, a gas regulating valve 18 and a gas mixing baffle 19. The air delivery pipe 13 is provided with a plurality of air delivery pipes, the air delivery pipe 13 is connected and arranged between the conical ignition cover 7 and the ignition box 5, the air delivery pipe 13 is connected with the gas mixing cavity, a gas delivery check valve 14 is installed on the air delivery pipe 13, the annular gas delivery pipe 15 is sleeved on the conical ignition cover 7, and a plurality of air intake short pipes 16 are connected between the annular gas delivery pipe 15 and the conical ignition cover 7, and the air intake short pipe 16 is connected with the air The gas pipes 13 correspond one to one, one end of the gas gas pipe 17 is connected to the annular gas pipe 15, the other end of the gas gas pipe 17 passes through and is sealed on the ignition box 5, the gas regulating valve 18 is installed on the gas gas pipe 17, and a plurality of gas mixing baffles 19 are provided, and the gas mixing baffles 19 correspond one to one with the air intake short pipes 16, and the gas mixing baffles 19 are arranged in the conical ignition cover 7, and the gas mixing baffles 19 are located on one side of the air intake short pipe 16 and the air gas pipe 13, and the gas mixing baffles 19 are located between the air intake short pipe 16 and the power fan 12.

[0029] Specifically, when heat is generated, the power motor 11 is started, and the output end of the power motor 11 drives the power rotating rod 10 to rotate, and the rotation of the power rotating rod 10 drives the power fan 12 to rotate. When the power fan 12 rotates, under the action of air pressure, the external gas enters the conical ignition cover 7 through the air supply pipe 13 and the gas supply one-way valve 14, and at the same time, the gas regulating valve 18 is opened, and the gas liquefied gas in the gas storage tank 27 enters the conical ignition cover 7 through the gas supply pipe 17, the gas regulating valve 18, the annular gas supply pipe 15 and the air intake short pipe 16. When the gas liquefied gas and the external gas enter the conical ignition cover 7 at the same time, they will collide with each other and mix due to the combination of the gas mixing baffle 19. The mixed gas is ejected through the perforated gas hood 8 by the rotation of the power fan 12. When the mixed gas is ejected from the perforated gas hood 8, the automatic igniter 9 is started to ignite the gas ejected from the perforated gas hood 8. After the gas is ejected from the perforated gas hood 8 and ignited, the burning gas will fill the entire ignition area, and the burning gas will heat the ignition box 5. The heat conduction of the ignition box 5 will heat the heat transfer liquid in the heating cavity, and the smoke generated in the ignition area will be discharged from the ignition area along the spiral heat conduction exhaust pipe 6. When the smoke flows in the spiral heat conduction pipe, the heat contained in the smoke will also be conducted to the heat transfer liquid in the heating cavity through the spiral heat conduction pipe.

[0030] As mentioned above, one end of the spiral heat-conducting smoke exhaust pipe 6 is sealed and connected to the ignition box 5, and the other end of the spiral heat-conducting smoke exhaust pipe 6 is sealed and penetrated to the heating box 4. The spiral heat-conducting smoke exhaust pipe 6 is arranged in the heating cavity, and the heat conduction component is arranged on one side of the heating box 4. The heat conduction component is connected to the heating cavity for the conduction of the heat-conducting medium.

[0031] Among them, the heat conduction component includes a heat pump 20, a heat exchange baffle 21, a liquid suction pipe 22 and a liquid discharge pipe 23. The heat pump 20 is installed on one side of the heating box 4. The heat exchange baffle 21 is sealed in the heating box 4. The heat exchange baffle 21 divides the heating cavity into heating chamber one and heating chamber two. The liquid inlet end of the heat pump 20 is connected to the heating chamber one, and the liquid infusion end of the heat pump 20 is connected to the heating chamber two. There are multiple liquid suction pipes 22, and the liquid suction pipes 22 are connected and arranged between the heating chamber one and the heat pipe group 001. There are multiple liquid discharge pipes 23, and the liquid discharge pipes 23 are connected and arranged between the heating chamber two and the heat pipe group 001.

[0032] Among them, the heat transfer pipe group 001 includes a heat exchange main pipe 24, a heat exchange slave pipe 25 and a U-shaped heat exchange pipe 26. The heat exchange main pipe 24 is arranged on one side of the U-shaped heat conductive plate 2, and the heat exchange main pipe 24 is connected to multiple drainage pipes 23. The heat exchange slave pipe 25 is arranged on one side of the U-shaped heat conductive plate 2, and the heat exchange slave pipe 25 is connected to multiple suction pipes 22. There are multiple U-shaped heat exchange pipes 26, and the U-shaped heat exchange pipe 26 is connected and arranged between the heat exchange main pipe 24 and the heat exchange slave pipe 25. The U-shaped heat exchange pipe 26 is located in the U-shaped heat conductive plate 2. In order to facilitate the detection of the temperature in the heating box 4, two temperature sensors 31 for detecting the temperature in the heating chamber one and the heating chamber two are also installed on the heating box 4.

[0033] Specifically, the heat transfer liquid is filled in the heating cavity, the liquid suction pipe 22, the liquid discharge pipe 23, the heat exchange main pipe 24, the heat exchange slave pipe 25 and the U-shaped heat exchange pipe 26. When the battery pack 1 is heated, after the heat transfer liquid in the heating cavity is heated, the heat conduction pump 20 is started, and the heat transfer liquid in the heating cavity 1 re-enters the heating cavity 1 along the heating cavity 2, the liquid discharge pipe 23, the heat exchange slave pipe 25, the U-shaped heat exchange pipe 26, the heat exchange main pipe 24 and the liquid suction pipe 22, and the heat transfer liquid is circulated. The heat is continuously heated. Under the action of heat conduction, the heat in the heat conduction fluid will be transferred to the U-shaped heat conduction plate 2, and the battery pack group 1 will be heated by the U-shaped heat conduction plate 2. This heating method can not only ensure that the combustion heating mechanism is away from the battery pack group 1 and will not cause potential danger to the battery pack group 1, but also has a fast heating speed. At the same time, the heat generated can also be transferred to the new energy vehicle through other heat conduction equipment, with high utilization rate of the generated heat, and can effectively solve the problem of high power consumption and potential danger of the heating relay.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack heating device for a new energy vehicle, comprising a battery pack group (1), characterized in that: Also includes: A U-shaped heat conducting plate (2), wherein the battery pack group (1) is mounted in the U-shaped heat conducting plate (2), and the U-shaped heat conducting plate (2) is in contact with the battery pack group (1); A heat conduction pipe group (001), wherein the heat conduction pipe group (001) is arranged inside the U-shaped heat conduction plate (2); A gas heating mechanism (002), the gas heating mechanism (002) being connected to the heat conducting pipe group (001) and being used for heating the U-shaped heat conducting plate (2); Wherein, the gas heating mechanism (002) comprises: A heating base (3), wherein a heating box (4) and an ignition box (5) are arranged on the heating base (3), wherein the ignition box (5) penetrates through and is sealed on one side of the ignition box (5), and a heating cavity is formed between the ignition box (5) and the heating box (4); an ignition heating component with a gas mixing function, the ignition heating component being arranged in the ignition box (5) and being used for providing heat; a spiral heat-conducting smoke exhaust pipe (6), one end of the spiral heat-conducting smoke exhaust pipe (6) being sealed and connected to the ignition box (5), the other end of the spiral heat-conducting smoke exhaust pipe (6) being sealed and penetrating the heating box (4), and the spiral heat-conducting smoke exhaust pipe (6) being arranged in the heating cavity; A heat conduction component, the heat conduction component is arranged on one side of the heating box (4), the heat conduction component is connected to the heating cavity, and is used for conducting a heat-conducting medium.

2. A battery pack heating device for new energy vehicles according to claim 1, characterized in that: The ignition heating assembly comprises: A conical ignition cover (7), the conical ignition cover (7) being arranged in the ignition box (5), a gas outlet cover (8) with holes being arranged on a side of the conical ignition cover (7) close to the heating box (4), the conical ignition cover (7) dividing the ignition box (5) into an air intake area and an ignition area; An air intake power group, the air intake power group being arranged on one side of the ignition box (5), and the air intake power group penetrating into the conical ignition cover (7); A gas delivery group having a gas mixing function, the gas delivery group being arranged in communication between the conical ignition cover (7) and the ignition box (5); An automatic igniter (9), the automatic igniter (9) being mounted on the ignition box (5), the ignition end of the automatic igniter (9) penetrating through and being sealed in the ignition area, the ignition end of the automatic igniter (9) being located on one side of the perforated air outlet hood (8).

3. A battery pack heating device for new energy vehicles according to claim 2, characterized in that: The air intake power group comprises: A power rotating rod (10), the power rotating rod (10) penetrating through and being arranged in a sealed manner and rotationally disposed on a side of the conical ignition cover (7) away from the heating box (4); A power motor (11), the power motor (11) being mounted on one side of the heating box (4), the output end of the power motor (11) being connected to one end of the power rotating rod (10); A power fan (12), the power fan (12) being mounted on the power rotating rod (10), the power fan (12) being located in the conical ignition cover (7), and the power fan (12) dividing the conical ignition cover (7) into a gas mixing cavity and a gas transmission cavity.

4. A battery pack heating device for new energy vehicles according to claim 3, characterized in that: The gas transmission group comprises: an air delivery pipe (13), wherein a plurality of the air delivery pipes (13) are provided, wherein the air delivery pipes (13) are arranged in communication between the conical ignition cover (7) and the ignition box (5), wherein the air delivery pipe (13) is in communication with the gas mixing cavity, and wherein a gas delivery one-way valve (14) is installed on the air delivery pipe (13); an annular air delivery pipe (15), the annular air delivery pipe (15) being sleeved on the conical ignition cover (7), a plurality of short air intake pipes (16) being connected between the annular air delivery pipe (15) and the conical ignition cover (7), the short air intake pipes (16) corresponding one to one with the air delivery pipes (13); a gas delivery pipe (17), one end of the gas delivery pipe (17) being connected to the annular gas delivery pipe (15), and the other end of the gas delivery pipe (17) penetrating through and being sealed on the ignition box (5); A gas regulating valve (18), the gas regulating valve (18) being installed on the gas transmission pipe (17); An air mixing baffle (19), wherein a plurality of the air mixing baffles (19) are provided, and the air mixing baffles (19) correspond one to one with the air intake short pipes (16), and the air mixing baffles (19) are arranged in the conical ignition cover (7), and the air mixing baffles (19) are located on one side of the air intake short pipe (16) and the air delivery pipe (13), and the air mixing baffles (19) are located between the air intake short pipe (16) and the power fan (12).

5. A battery pack heating device for new energy vehicles according to claim 4, characterized in that: The heat conduction component comprises: A heat conduction pump (20), the heat conduction pump (20) being installed on one side of the heating box (4); a heat exchange baffle (21), the heat exchange baffle (21) being sealed and arranged in the heating box (4), the heat exchange baffle (21) dividing the heating cavity into a first heating cavity and a second heating cavity, the liquid inlet end of the heat conduction pump (20) being connected to the first heating cavity, and the liquid inlet end of the heat conduction pump (20) being connected to the second heating cavity; A liquid suction pipe (22), wherein a plurality of the liquid suction pipes (22) are provided, and the liquid suction pipes (22) are arranged in communication between the first heating chamber and the heat conduction pipe group (001); A liquid drain pipe (23), wherein a plurality of the liquid drain pipes (23) are provided, and the liquid drain pipes (23) are arranged in communication between the second heating chamber and the heat conduction pipe group (001).

6. A battery pack heating device for new energy vehicles according to claim 5, characterized in that: The heat conduction pipe group (001) comprises: A heat exchange main pipe (24), the heat exchange main pipe (24) being arranged on one side of the U-shaped heat conducting plate (2), the heat exchange main pipe (24) being connected to the plurality of liquid discharge pipes (23); A heat exchange slave tube (25), the heat exchange slave tube (25) being arranged on one side of the U-shaped heat conducting plate (2), the heat exchange slave tube (25) being connected to the plurality of liquid suction tubes (22); A U-shaped heat exchange tube (26), wherein a plurality of the U-shaped heat exchange tubes (26) are provided, wherein the U-shaped heat exchange tubes (26) are arranged in communication between the main heat exchange tube (24) and the secondary heat exchange tube (25), and the U-shaped heat exchange tubes (26) are located inside the U-shaped heat conducting plate (2).

7. A battery pack heating device for new energy vehicles according to claim 6, characterized in that: A gas storage component (003) is also provided on one side of the gas heating mechanism (002), and the gas storage component (003) is connected to the gas transmission pipe (17).

8. A battery pack heating device for new energy vehicles according to claim 7, characterized in that: The gas storage component (003) comprises: A gas storage tank (27), the gas storage tank (27) being connected to the gas transmission pipe (17); An air supply pipe (28), the air supply pipe (28) being arranged in communication with the fuel gas storage tank (27), and an air supply valve (29) being installed on the air supply pipe (28).

9. A battery pack heating device for new energy vehicles according to claim 8, characterized in that: The fuel gas storage tank (27) is also equipped with a gas pressure detection sensor (30).

10. A battery pack heating device for new energy vehicles according to claim 9, characterized in that: The heating box (4) is also equipped with two temperature sensors (31) for detecting the temperature in heating chamber one and heating chamber two, respectively.

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