Device for heating and warming energy storage batteries for cold area

Abstract

To provide a device for heating and warming an energy storage battery for a cold area, in which an environmental temperature of the energy storage battery is always within an optimum operating temperature range of the battery, and a service time of the energy storage battery is ensured.SOLUTION: In a device including a battery box and a diesel oil circulation heater, the battery box includes an upper lid 1, an outer housing 2, and an inner housing 3, and a first vacuum intervening layer 12 is provided between the inner housing and the outer housing. A water storage layer 27 is provided in the inner housing, two water supply pipes are provided on a top of the inner housing, a second vacuum interposed layer 21 is attached to the top of the housing in the upper lid and provided in the inside, and a water supply hole and a wiring hole 19 are provided. A water supply joint 6 communicating with the water supply pipe is attached to each of the water supply holes, and an input end and an output end of a diesel oil circulation heater communicate with each other. The wiring hole communicates with the inner housing, and a temperature sensor 25 connected to the diesel oil circulation heater is provided on the inner wall of the inner housing.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to the field of heat retention for energy storage batteries, and more particularly to a device for heating and retaining heat for energy storage batteries for cold climates. [Background technology]

[0002] With the continuous development of China's coal resources, spontaneous combustion in open-cut coal mines has become one of the major disasters that destroys coal resources and pollutes the environment. Currently, the main ground technology for preventing and monitoring spontaneous combustion in open-cut coal mines is infrared thermography scanning monitoring and alarm technology.

[0003] Most coal mines are located in remote areas, such as deserts, making it difficult to fully cover them with power systems. Therefore, conventional infrared detection and alarm systems primarily rely on photovoltaic panels in conjunction with energy storage battery systems for power supply. This is particularly prevalent in Xinjiang. However, the energy supply method using energy storage batteries is highly unstable. Especially in cold winters, the dual effects of reduced solar radiation and low temperatures significantly reduce the battery's battery life, making it difficult for the infrared thermography detection and alarm system to operate all day. Therefore, it is necessary to adopt a heating measure for the battery to improve its battery life. Conventional battery heating devices often lack effective heating capabilities, and heating devices with heating functions often use electric heating, which makes them difficult to use in remote locations far from the power system. At the same time, the main material of the heating device is often a thermal insulation material with low thermal conductivity, resulting in low rigidity, making it difficult to effectively protect the battery in harsh outdoor environments. Summary of the Invention

[0004] To solve the problems in the background art, the present invention provides a device for heating and keeping warm an energy storage battery for cold climates. The present invention overcomes the current situation where the heating function of current battery warming boxes is difficult to function in environments without a power grid, and also provides the function of protecting the battery even in harsh environments. The technical means of the present invention are as follows.

[0005] The device for heating and keeping warm an energy storage battery for cold climates includes a battery box and a diesel oil circulation heater, the battery box including a housing and a top cover, the housing including an outer housing and an inner housing disposed within the outer housing, a first vacuum layer disposed between the inner housing and the outer housing, the first vacuum layer being distributed on the side walls and bottom of the housing, a water reservoir disposed inside the side walls and bottom plate of the inner housing, the water reservoir being connected to each other, and two water supply pipes being provided at the top of the inner housing and connected to the water reservoir. The top cover is attached to the top of the housing, and a silicone rubber pad for sealing is provided at the connection point between the top cover and the housing. A second vacuum intervening layer is provided inside the top cover. The top cover is provided with a water supply hole and a wiring hole, the number of the water supply holes corresponds to the number of water supply pipes, and each water supply hole is attached with a water supply joint, which is connected to the water supply pipe. The input end of the diesel oil circulation heater is connected to one water supply joint, and the output end of the diesel oil circulation heater is connected to another water supply joint. The wiring hole is connected to the inner housing. A temperature sensor is provided on the inner wall of the inner housing and is connected to a diesel oil circulation heater.

[0006] Preferably, the cooling system further includes a cooling system, the cooling system including a water cooler and a water pump, the input end of the water pump is connected to the water cooler; The water supply joints are three-way water supply joints, and the three passages of one three-way water supply joint are respectively connected to the corresponding water supply hole, the input end of the diesel oil circulation heater and the cold water box, and the three passages of the other three-way water supply joint are respectively connected to the corresponding water supply hole, the output end of the diesel oil circulation heater and the output end of the water pump; The temperature sensor is connected to the water pump.

[0007] Preferably, a first male thread is provided on the outer wall of the water supply pipe, a first female thread is provided on the inner wall of the passage of the water supply fitting that communicates with the water supply pipe, a first silicone rubber seal ring is fitted onto the outer wall of the water supply pipe, the water supply fitting is connected to the water supply pipe by threading the first male thread and the first female thread together, and the first silicone rubber seal ring is positioned between the water supply fitting and the top of the inner housing so as to be pressed by the water supply fitting.

[0008] Preferably, the diameter of the lower part of the wiring hole is smaller than the diameter of the upper part of the wiring hole, a wiring bolt is provided within the upper part of the wiring hole, a through hole is provided within the wiring bolt, a second male thread is provided on the outer wall of the wiring bolt, a second female thread is provided on the inner wall of the upper part of the wiring hole, a second silicone rubber seal ring is provided within the upper part of the wiring hole, the wiring bolt is connected to the wiring hole by threading the second male thread and the second female thread, and the second silicone rubber seal ring is positioned below the wiring bolt so as to be pressed by the wiring bolt.

[0009] Preferably, the inner housing is connected to the outer housing by an upper connecting beam and a lower connecting beam, a first locking block is provided on the outside of the top of each opposing side wall of the outer housing, a first locking groove is provided on the inside of the top of each opposing side wall of the inner housing, a second locking groove is provided below one side of the lower connecting beam, and a third locking groove is provided above the other side of the lower connecting beam, the first locking block is provided in the second locking groove, and a second locking block and a third locking block are provided at both ends of the upper connecting beam, respectively, the second locking block is provided in the first locking groove, and the third locking block is provided in the third locking groove.

[0010] Preferably, a first insertion groove and a second insertion groove are provided on both sides of the bottom of the upper cover, and the tops of both side walls of the inner housing that do not have upper connecting beams are inserted into the first insertion groove, and the tops of both side walls of the outer housing that do not have upper connecting beams are inserted into the second insertion groove.

[0011] Preferably, the silicone rubber pads are provided on the bottom of the upper cover, the inner wall of the first insertion groove, and the inner wall of the second insertion groove, and silicone rubber pads for sealing are provided on the contact surface between the upper connecting beam and the inner housing, the contact surface between the lower connecting beam and the outer housing, and the contact surface between the upper connecting beam and the lower connecting beam.

[0012] Preferably, the inner wall of the outer housing, the outer wall of the inner housing, and the bottom of the top cover are all coated with a heat-retaining paint.

[0013] Preferably, the outer housing is provided with an air bleed pipe communicating with the first vacuum intervening layer, and the air bleed pipe is provided with a one-way valve.

[0014] Preferably, the inner wall of the water reservoir of the inner housing is provided with a waterproof coating.

[0015] The present invention has the following beneficial effects: 1. The present invention uses an overall structure of thermal insulation coating - vacuum layer - thermal insulation coating - heating layer to ensure the thermal insulation performance of the battery box, greatly reducing the heat loss in the internal environment of the battery box, and also uses a diesel oil circulation heater to supply constant-temperature hot water into the water reservoir to turn the water reservoir into a heating layer, and a temperature sensor to ensure that the supplied water temperature is constant, thereby ensuring that the temperature of the environment where the energy storage battery is located is always within the optimal operating temperature range of the battery and preventing the temperature inside the battery box from becoming too high or too low, further ensuring the thermal insulation effect and ensuring the life of the energy storage battery. 2. The battery box of the present invention uses an insertion structure, which makes it easy to disassemble the device, and is simple, flexible, and reliable to operate. It also allows parts of different materials to be replaced according to environmental needs, making it highly adaptable to the environment. 3. The present invention further includes a temperature-reducing system. When the battery temperature exceeds a predetermined upper limit, the temperature sensor detects the abnormal temperature and activates the temperature-reducing system, which then cools the battery box with water to dissipate heat, thereby preventing the energy storage battery from overheating or catching fire and ensuring the battery's service life and safety. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of the overall structure of the present invention. [Figure 2] 1 is a structural schematic diagram of a battery box according to the present invention when the top cover and the housing are not connected. [Figure 3] FIG. 2 is a side cross-sectional view of the battery box of the present invention. [Figure 4] FIG. 2 is a structural schematic diagram of the upper cover of the present invention. [Figure 5] FIG. 2 is a front cross-sectional view of the top cover of the present invention. [Figure 6] FIG. 2 is a side cross-sectional view of the top cover of the present invention. [Figure 7] FIG. 2 is a structural schematic diagram of an outer housing of the present invention. [Figure 8] FIG. 2 is a front cross-sectional view of the outer housing of the present invention. [Figure 9] FIG. 2 is a structural schematic diagram of an inner housing of the present invention. [Figure 10] FIG. 2 is a front cross-sectional view of the inner housing of the present invention. [Figure 11] FIG. 2 is a structural schematic diagram of an upper connecting beam of the present invention. [Figure 12] FIG. 2 is a left side view of the upper connecting beam of the present invention. [Figure 13] FIG. 2 is a structural schematic diagram of the lower connecting beam of the present invention. [Figure 14] 1 is a structural schematic diagram of the present invention after assembling the upper connecting beam, the lower connecting beam and the housing. FIG. [Figure 15] FIG. 15 is an enlarged schematic structural diagram of a portion A in FIG. [Figure 16] 1 is a structural schematic diagram of a wiring bolt according to the present invention. [Figure 17]4 is a schematic diagram showing a method of connecting a wiring bolt and a second silicone rubber seal ring according to the present invention. FIG. [Figure 18] 1 is a structural schematic diagram of a three-way water supply joint of the present invention. [Figure 19] 2 is a schematic diagram showing the connection method between the three-way water supply joint and the first silicone rubber seal ring of the present invention. FIG.

[0017] Explanation of symbols 1. Top cover; 2. Outer housing; 3. Inner housing; 4. Upper connecting beam; 5. Lower connecting beam; 6. Three-way water supply joint; 7. Wiring bolt; 8. Diesel oil circulation heater; 9. Water supply pipe; 10. Cold water box; 11. Silicone rubber pad; 12. First vacuum interposing layer; 13. Thermal insulation paint; 14. First male thread; 15. Water pump; 16. First silicone rubber sealing ring; 17. Second silicone rubber sealing ring; 18. Water supply hole; 19. Wiring hole; 20. Handle; 21. Second vacuum interposing layer; 22. First locking block; 23. One-way valve; 24. Air extraction pipe; 25. Temperature sensor; 26. First locking groove; 27. Water reservoir; 28. Second locking block; 29. ​​Third locking block; 30. Third locking groove; 31. Second locking groove; 32. First insertion groove; 33. Second insertion groove. DETAILED DESCRIPTION OF THE INVENTION

[0018] In order to make the present invention clearer and more explicit, the technical solutions of the present invention will be described in more detail below with reference to the drawings and examples. It should be understood that the given example is only one kind of implementation method and does not represent all examples.

[0019] In this specification, terms such as "upper, lower, inner, outer" are established based on the positional relationships shown in the drawings, and corresponding positional relationships may vary depending on the drawing, so they should not be understood as absolutely limiting the scope of protection.

[0020] As shown in Figures 1 to 19, the device for heating and keeping warm an energy storage battery for cold climates includes a battery box and a diesel oil circulation heater 8. The battery box includes a housing and a top cover 1. A handle 20 is provided on the top of the top cover 1. The housing includes an outer housing 2 and an inner housing 3 provided within the outer housing 2. A first vacuum layer 12 is provided between the inner housing 3 and the outer housing 2. The first vacuum layer 12 is distributed on the side walls and bottom of the housing. A water reservoir 27 is provided inside the side walls and bottom plate of the inner housing 3, and they communicate with each other. Two water supply pipes 9 are provided on the top of the inner housing 3, which communicate with the water reservoir 27. The top cover 1 is attached to the top of the housing. A silicone rubber pad 11 is provided at the connection between the top cover 1 and the housing for sealing. A second vacuum layer 21 is provided inside the top cover 1. The top cover 1 is provided with water supply holes 18 and wiring holes 19. The number of the water supply holes 18 corresponds to the number of the water supply pipes 9. Each water supply hole 18 is provided with a water supply joint. The water supply joints are connected to the water supply pipes 9. The input end of the diesel oil circulation heater 8 is connected to one water supply joint, and the output end of the diesel oil circulation heater 8 is connected to the other water supply joint, and the wiring hole 19 is connected to the inner housing 3. The cooling system further includes a water cooler 10 and a water pump 15. The input end of the water pump 15 is connected to the water cooler 10. The water supply joints are three-way water supply joints 6. The three passages of one three-way water supply joint 6 are respectively connected to the corresponding water supply hole 18, the input end of the diesel oil circulation heater 8, and the cold water box 10, and the three passages of the other three-way water supply joint 6 are respectively connected to the corresponding water supply hole 18, the output end of the diesel oil circulation heater 8, and the output end of the water pump 15. A temperature sensor 25 is provided on the inner wall of the inner housing 3. The temperature sensor 25 is connected to the diesel oil circulation heater 8 and the water pump 15, respectively.

[0021] The energy storage battery is housed within the inner housing 3, and the wiring of the energy storage battery and the conductor of the temperature sensor 25 extend from the wiring hole 19 to the outside of the housing.

[0022] Specifically, a first male thread 14 is provided on the outer wall of the water supply pipe 9. A first female thread is provided on the inner wall of a passage in the water supply joint that communicates with the water supply pipe 9. A first silicone rubber seal ring 16 is fitted onto the outer wall of the water supply pipe 9. The water supply joint is connected to the water supply pipe 9 by threadedly engaging the first male thread 14 with the first female thread. The first silicone rubber seal ring 16 is located between the water supply joint and the top of the inner housing 3. The water supply joint presses against the first silicone rubber seal ring 16. The water supply joint is attached to the water supply pipe 9 by a threaded connection. When the water supply joint is tightened, the first silicone rubber seal ring 16 is pressed against it. The first silicone rubber seal ring 16 seals the gaps between the water supply pipe 9 and the water supply hole 18 and the water supply joint, thereby ensuring a sealed battery box.

[0023] The diameter of the lower part of the wiring hole 19 is smaller than the diameter of the upper part of the wiring hole 19. A wiring bolt 7 is provided inside the upper part of the wiring hole 19. A through hole is provided inside the wiring bolt 7. A second male thread is provided on the outer wall of the wiring bolt 7. A second female thread is provided on the inner wall of the upper part of the wiring hole 19. A second silicone rubber seal ring 17 is provided inside the upper part of the wiring hole 19. The wiring bolt 7 is connected to the wiring hole 19 by threading the second male thread and the second female thread. The second silicone rubber seal ring 17 is located below the wiring bolt 7. The wiring bolt 7 presses against the second silicone rubber seal ring 17. Wiring comes out from the wiring hole 19 and the through hole of the wiring bolt 7. The wiring bolt 7 is screwed into the wiring hole 19. When the wiring bolt 7 is tightened, the second silicone rubber seal ring 17 is pressed. The second silicone rubber sealing ring 17 seals the gap between the conductor and the wiring hole 19 and the wiring bolt 7, thereby satisfying the wiring requirements and ensuring the sealing effect of the battery box.

[0024] Specifically, the inner housing 3 is connected to the outer housing 2 via an upper connecting beam 4 and a lower connecting beam 5. A first locking block 22 is provided on the outer side of the top of each opposing side wall of the outer housing 2. A first locking groove 26 is provided on the inner side of the top of each opposing side wall of the inner housing 3. A second locking groove 31 is provided below one side of the lower connecting beam 5, and a third locking groove 30 is provided above the other side of the lower connecting beam 5. The first locking block 22 is provided in the second locking groove 31. A second locking block 28 and a third locking block 29 are provided at both ends of the upper connecting beam 4, respectively. The second locking block 28 is provided in the first locking groove 26, and the third locking block 29 is provided in the third locking groove 30. The upper connecting beam 4 and the lower connecting beam 5 are made of stainless steel. Stainless steel has a low heat transfer coefficient, which reduces heat transfer between the inside and outside and provides excellent heat retention. More specifically, during installation, the second locking block 28 of the upper connecting beam 4 is first connected to the first locking groove 26 of the inner housing 3. The third locking block 29 of the upper connecting beam 4 is located outside the outer housing 2, and an installation space for the lower connecting beam 5 is formed between the upper connecting beam 4 and the side wall on which the first locking block 22 of the outer housing 2 is located. When inserting the lower connecting beam 5 from the installation space, the first locking block 22 of the outer housing 2 is inserted into the second locking groove 31 of the lower connecting beam 5, and the third locking block 29 of the upper connecting beam 4 is inserted into the third locking groove 30. Once the lower connecting beam 5 is fully inserted into the installation space, the connection between the inner housing 3 and the outer housing 2 is complete.

[0025] A first insertion groove 32 and a second insertion groove 33 are respectively formed on both sides of the bottom of the top cover 1. The tops of both side walls of the inner housing 3 that do not have the upper connecting beam 4 are inserted into the first insertion groove 32, and the tops of both side walls of the outer housing 2 that do not have the upper connecting beam 4 are inserted into the second insertion groove 33. The housing, the upper connecting beam 4, the lower connecting beam 5, and the top cover 1 are connected in the form of an insertion structure. This simplifies disassembly and assembly, facilitating insertion and removal of the energy storage battery and replacement and maintenance of battery box components.

[0026] Specifically, the silicone rubber pads 11 are provided on the bottom of the top cover 1, the inner wall of the first insertion groove 32, and the inner wall of the second insertion groove 33. Silicon rubber pads 11 for sealing are provided on the contact surface between the upper connecting beam 4 and the inner housing 3, the contact surface between the lower connecting beam 5 and the outer housing 2, and the contact surface between the upper connecting beam 4 and the lower connecting beam 5. The silicone rubber pads 11 can seal gaps between the top cover 1 and the housing, the upper connecting beam 4 and the housing, the lower connecting beam 5 and the housing, and the upper connecting beam 4 and the lower connecting beam 5. This ensures the sealing of the connection points of the members, thereby ensuring the heat retention effect of the battery box.

[0027] Specifically, the inner wall of the outer housing 2, the outer wall of the inner housing 3, and the bottom of the top cover 1 are all coated with a thermal insulation paint 13. The thermal insulation paint 13 can improve the thermal insulation effect. The thermal insulation paint 13 may be a sepiolite-silicate composite thermal insulation paint 13.

[0028] Specifically, an air bleed pipe 24 communicating with the first vacuum interposed layer 12 is provided on the outer housing 2. A one-way valve 23 is provided inside the air bleed pipe 24. The one-way valve 23 vents air from the first vacuum interposed layer 12 to the outside of the outer housing 2. Because the first vacuum interposed layer 12 is in communication with the outside air before the top cover 1 is attached to the housing, the first vacuum interposed layer 12 is not in a complete vacuum state after the top cover 1 is connected to the housing. In this case, a vacuum bleed device can be connected to the air bleed pipe 24, and the first vacuum interposed layer 12 can be bled with the vacuum bleed device to put the first vacuum interposed layer 12 into a vacuum state.

[0029] Specifically, a waterproof coating layer is provided on the inner wall of the water reservoir 27 of the inner housing 3. This prevents corrosion and rust on the inner wall of the water reservoir 27 of the inner housing 3, improving the durability of the inner housing 3.

[0030] The control module of the diesel oil circulation heater 8 sets the temperature range to 20°C-28°C, with 20°C as the execution trigger value of the control program for the diesel oil circulation heater 8. The temperature sensor 25 is connected to the control module of the diesel oil circulation heater 8 via a wire and provides a real-time temperature signal to the control module of the diesel oil circulation heater 8. After the control module of the diesel oil circulation heater 8 receives a temperature signal indicating that the temperature is below the trigger value of 20°C, it activates the diesel oil circulation heater 8 to inject hot water into the water reservoir 27 of the inner housing 3 to heat the housing. The temperature of the injected hot water is 30°C (constant temperature). After the control module of the diesel oil circulation heater 8 receives a temperature signal indicating that the temperature inside the inner housing 3 exceeds 28°C, it stops the operation of the diesel oil circulation heater 8, thereby saving diesel oil consumption.

[0031] The control module of the water pump 15 sets the start / stop temperature range to 40°C-55°C. The control module of the water pump 15 is also connected to the temperature sensor 25. When the control module of the water pump 15 receives a temperature signal indicating that the temperature has reached 55°C, the water pump 15 starts up, transporting the cold water in the water cooler 10 to the water reservoir 27 and circulating it to remove heat from the battery. When the control module of the water pump 15 receives a temperature signal indicating that the temperature has dropped to 40°C, the water pump 15 stops operating. The water in the water cooler 10 is cold water to which antifreeze has been added.

[0032] Operation flow: The temperature sensor 25 inside the inner housing 3 monitors the temperature of the internal environment where the battery is located and sends a temperature signal to the control module of the diesel oil circulation heater 8 and the control module of the water pump 15. If the temperature sensor 25 detects that the internal temperature is below the predetermined 20°C, the control module of the diesel oil circulation heater 8 starts the diesel oil circulation heater and transports hot water at 30°C into the water reservoir 27 through the water supply pipe 9. After the water reservoir 27 is filled with water, the water flows out through another water supply pipe 9 and re-enters the diesel oil circulation heater 8 to circulate, thereby ensuring that the water temperature in the water reservoir 27 remains constant. When the temperature of the environment where the battery is located reaches 28°C, the control module of the diesel oil circulation heater 8 receives a signal from the temperature sensor 25 and stops the operation of the diesel oil circulation heater 8, completing the heating and insulation operation.

[0033] When the battery operation generates more heat than the housing can dissipate, causing the battery temperature to rise abnormally and the temperature inside the housing to reach 55°C, the control module of water pump 15 controls the start of water pump 15, and cold water in water cooler 10 is introduced into water reservoir 27 via water supply pipe 9 to remove the heat from the battery and lower the temperature of the environment in which the battery is located. After the temperature inside the housing drops to 40°C, the control module of water pump 15 stops the operation of water pump 15, completing the temperature-lowering operation.

[0034] The combined operation of the temperature reduction system, diesel oil circulation heater 8 and temperature sensor 25 ensures that the temperature of the environment in which the battery resides always varies within the optimum operating temperature range, thereby ensuring optimum operating efficiency of the battery.

[0035] The set temperature range and the temperature of the water injected into the water reservoir 27 can be set according to the actual environment, and are not limited to the above values.

[0036] The top cover 1, outer housing 2, and inner housing 3 may be made of carbon steel. Carbon steel has high strength and can effectively protect the energy storage battery in harsh outdoor environments. In high-temperature environments such as summer, the carbon steel inner housing 3 can be replaced with a phase-change material inner housing 3. In high-temperature operating environments, the thermal insulation coating and vacuum interposition layer can effectively block heat from entering from the high-temperature external environment, and the phase-change material inner housing 3 can timely absorb heat generated by the operation of the energy storage battery. The synergistic effects of the phase-change material inner housing 3, the thermal insulation coating, and the vacuum interposition layer can effectively suppress the temperature rise of the energy storage battery, ensuring that the battery operates within the optimal operating temperature range and achieving maximum performance.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art may make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. An apparatus for heating and keeping warm an energy storage battery for cold climates, comprising a battery box and a diesel oil circulation heater, The battery box includes a housing and a top cover, the housing includes an outer housing and an inner housing disposed within the outer housing, a first vacuum intervening layer is disposed between the inner housing and the outer housing, the first vacuum intervening layer is distributed on the side walls and bottom of the housing, a water reservoir is disposed inside the side walls and bottom plate of the inner housing, the water reservoir is disposed in communication with each other, and two water supply pipes are disposed on the top of the inner housing, which are in communication with the water reservoir, the top cover is attached to the top of the housing, and the top cover a silicone rubber pad for sealing is provided at the connection point between the heater and the housing; a second vacuum intervening layer is provided inside the top cover; a water supply hole and a wiring hole are provided in the top cover; the number of the water supply holes corresponds to the number of the water supply pipes; each water supply hole is attached with a water supply joint; the water supply joint is connected to the water supply pipe; the input end of the diesel oil circulation heater is connected to one water supply joint; the output end of the diesel oil circulation heater is connected to another water supply joint; and the wiring hole is connected to the inner housing; a temperature sensor is provided on the inner wall of the inner housing, and the temperature sensor is connected to a diesel oil circulation heater; a first locking groove provided on the inside of the top of each of the opposing side walls of the inner housing; a second locking groove provided below one side of the lower connecting beam; and a third locking groove provided above the other side of the lower connecting beam, the first locking block being located in the second locking groove; and second and third locking blocks being located at both ends of the upper connecting beam, respectively, the second locking block being located in the first locking groove, and the third locking block being located in the third locking groove.

2. The cooling system further includes a cooling system including a water cooler and a water pump, and an input end of the water pump is connected to the water cooler; The water supply joint is a three-way water supply joint, and the three passages of one three-way water supply joint are respectively connected to the corresponding water supply hole, the input end of the diesel oil circulation heater and the cold water box, and the three passages of the other three-way water supply joint are respectively connected to the corresponding water supply hole, the output end of the diesel oil circulation heater and the output end of the water pump; 2. The device for heating and keeping warm an energy storage battery for cold climates according to claim 1, wherein the temperature sensor is connected to a water pump.

3. 3. The device for heating and keeping warm an energy storage battery for use in cold climates as described in claim 1 or 2, characterized in that a first male thread is provided on the outer wall of the water supply pipe, a first female thread is provided on the inner wall of a passage of the water supply joint that communicates with the water supply pipe, a first silicone rubber seal ring is fitted onto the outer wall of the water supply pipe, the water supply joint is connected to the water supply pipe by threaded engagement of the first male thread and the first female thread, and the first silicone rubber seal ring is located between the water supply joint and the top of the inner housing so as to be pressed by the water supply joint.

4. 2. The device for heating and keeping warm an energy storage battery for cold climates according to claim 1, wherein the diameter of the lower part of the wiring hole is smaller than the diameter of the upper part of the wiring hole, a wiring bolt is provided within the upper part of the wiring hole, a through hole is provided within the wiring bolt, a second male thread is provided on an outer wall of the wiring bolt, a second female thread is provided on an inner wall of the upper part of the wiring hole, and a second silicone rubber seal ring is provided within the upper part of the wiring hole, the wiring bolt is connected to the wiring hole by threading the second male thread and the second female thread, and the second silicone rubber seal ring is located below the wiring bolt so as to be pressed by the wiring bolt.

5. 2. The device for heating and insulating an energy storage battery for cold climates according to claim 1, wherein a first insertion groove and a second insertion groove are provided on both sides of the bottom of the upper cover, and the tops of both side walls of the inner housing that do not have upper connecting beams are inserted into the first insertion grooves, and the tops of both side walls of the outer housing that do not have upper connecting beams are inserted into the second insertion grooves.

6. 6. The device for heating and keeping warm an energy storage battery for cold climates as described in claim 5, characterized in that the silicone rubber pads are respectively provided on the bottom of the upper cover, the inner wall of the first insertion groove and the inner wall of the second insertion groove, and silicone rubber pads for sealing are provided on all of the contact surfaces between the upper connecting beam and the inner housing, the contact surface between the lower connecting beam and the outer housing, and the contact surface between the upper connecting beam and the lower connecting beam.

7. 2. The device for heating and insulating an energy storage battery for cold climates according to claim 1, wherein the inner wall of the outer housing, the outer wall of the inner housing, and the bottom of the top cover are all coated with thermal insulation paint.

8. 2. The device for heating and keeping warm an energy storage battery for cold climates according to claim 1, wherein the outer housing is provided with an air bleed pipe communicating with the first vacuum interposed layer, and a one-way valve is provided in the air bleed pipe.

9. 2. The device for heating and insulating an energy storage battery for cold climates according to claim 1, wherein the inner wall of the water reservoir of the inner housing is provided with a waterproof coating.

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