New energy automobile battery pack with overheating alarm function

Abstract

The invention provides a new energy automobile battery pack with an overheating alarm function, and relates to the technical field of automobile battery packs. The new energy automobile battery pack comprises a bottom plate, a protective shell is fixedly connected to the edge of the upper surface of the bottom plate, a plurality of positioning frames are fixedly connected to the middle of the upper surface of the bottom plate, a plurality of positioning grooves are formed in the middle of the upper surface of the bottom plate, and three assembling grooves are formed in the inner walls of the front end and the rear end of each positioning frame correspondingly; the interior of each assembling groove is fixedly connected with a refrigeration plate, and the interior of each refrigeration plate is fixedly connected with a refrigeration pipe. According to the new energy automobile battery pack with the overheating alarm function, the real-time temperature of the single storage battery during working can be rapidly obtained, the flow speed of the cooling liquid and the flow speed of the cooling air are adjusted in combination with the temperature of the single storage battery, and then the purpose of rapid and efficient heat dissipation of the storage battery is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile battery packs, and in particular to a new energy automobile battery pack with an overheat alarm function. Background Art

[0002] New energy vehicle battery pack refers to the energy storage device used in new energy vehicles, usually composed of multiple battery cells. These battery cells are combined together to form a whole, which is used to store and release electrical energy for vehicle driving. New energy vehicle battery packs use the storage and release of secondary energy (such as electrical energy). Compared with fuel vehicles, there is no tail gas emission during the use of the vehicle, which can reduce air pollution and greenhouse gas emissions, and is of great significance to improving environmental quality and responding to climate change. During the operation of the new energy vehicle battery pack, a certain amount of heat will be generated. At this time, the overheating alarm can improve the safety of vehicle driving, extend the battery life and prevent the occurrence of dangerous accidents, thereby ensuring the safety and performance of the battery pack, extending the battery life, and preventing accidents caused by overheating, and improving the reliability and driving comfort of new energy vehicles.

[0003] However, traditional new energy vehicle battery packs are usually densely stacked together, which is mostly inconvenient for real-time temperature monitoring of a single battery. As a result, in the process of cooling multiple batteries, uneven heat dissipation and poor heat dissipation may occur, that is, the temperature of one battery is still high, but the temperature of the remaining batteries has returned to normal values, so that the new energy battery pack may have a cooling system shutdown or low-energy cooling. As a result, a single high-temperature battery not only brings safety hazards but also reduces the performance and service life of the single battery. At the same time, when the cooling system of the traditional new energy vehicle battery pack performs heat dissipation in the air with high ambient humidity, it may cause cooling air with high humidity to enter the high-temperature working environment of the battery, which may easily make the battery surface wet, or condensation may occur, making the battery prone to short circuit and self-discharge, which increases the aging process of the battery and reduces the performance and service life of the battery. For this reason, technical improvements are urgently needed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a new energy vehicle battery pack with an overheating alarm function, which solves the problem that traditional new energy vehicle battery packs are inconvenient for real-time temperature monitoring of a single battery, and solves the problem that high air humidity affects the battery during the heat dissipation process of traditional new energy vehicle battery packs.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A new energy vehicle battery pack with an overheat alarm function comprises a bottom plate, a protective shell is fixedly connected to the edge of the upper surface of the bottom plate, a plurality of positioning frames are fixedly connected to the middle of the upper surface of the bottom plate, a plurality of positioning grooves are provided in the middle of the upper surface of the bottom plate, three assembly grooves are respectively provided on the inner walls of the front and rear ends of the positioning frames, a refrigeration plate is fixedly connected to the inside of the assembly grooves, a refrigeration pipe is fixedly connected to the inside of the refrigeration plate, batteries are respectively arranged in the interior of the positioning frames, and a liquid storage box and a high-pressure water pump are respectively fixedly connected to the rear end of the upper surface of the bottom plate; The water outlet of the high-pressure water pump is fixedly connected with a first connecting pipe, the tube body of the first connecting pipe is fixedly connected with a plurality of two-way liquid pipes, the two-way liquid pipes penetrate the protective shell and the positioning frame and are connected with the refrigeration pipe, one side of the liquid storage box is fixedly connected with a second connecting pipe, one side of the two-way liquid pipe is connected with the second connecting pipe, one side of the two-way liquid pipe is fixedly connected with a one-way valve, and the side of the two-way liquid pipe away from the one-way valve is fixedly connected with a liquid flow control valve; The upper end of the protective shell is connected to a protective cover by bolts, the bottom surface of the positioning groove is fixedly connected to two first temperature monitors, the front end and the rear end of the inner wall of the positioning frame are respectively fixedly connected to three second temperature monitors, the middle part of the lower surface of the protective cover is fixedly connected to a plurality of third temperature monitors, and the rear end of the upper surface of the bottom plate is respectively fixedly connected to a PLC controller and a wireless communication alarm module; The lower part of the rear end of the liquid storage box is fixedly connected with three first semiconductor refrigerators, one side of the lower part of the rear end of the liquid storage box is fixedly connected with a first liquid outlet valve, one side of the middle part of the upper surface of the liquid storage box is fixedly connected with a liquid inlet head, the water suction port of the high-pressure water pump is fixedly connected with a third connecting pipe, and one side of the third connecting pipe is connected with the liquid storage box; Through the above technical scheme, the new energy vehicle battery pack can quickly obtain the real-time temperature of a single battery during operation, and adjust the flow rate of the coolant and the cooling air in combination with the temperature of the single battery, thereby achieving the purpose of fast and efficient heat dissipation of the battery. At the same time, the humidity in the cooling air can be reduced, so that during the heat dissipation of the battery, the air humidity inside the protective shell is greatly reduced, thereby ensuring the performance of the battery and reducing the occurrence of safety hazards such as short circuits. At the same time, the degree of wetness on the battery surface is reduced, the occurrence of battery self-discharge is reduced, the aging process of the battery is reduced, and the battery life and performance are further improved.

[0006] Preferably, a plurality of two-way ventilation pipes are provided on both sides of the protective shell, mounting grooves are provided at the front end and the rear end of the bottom surface of the positioning groove, heat dissipation pipes are fixedly connected inside the mounting grooves, a plurality of heat dissipation nozzles are fixedly connected to the tube bodies of the heat dissipation pipes, the lower ends of the two-way ventilation pipes pass through the protective shell and the mounting grooves and are connected with the heat dissipation pipes, an air suction box is fixedly connected to the middle part of the upper surface of the protective cover, a plurality of ventilation holes are provided in the middle part of the upper surface of the protective cover, an air outlet hole is provided at the lower end of the air suction box, liquid storage tanks are provided on the inner walls on both sides of the air suction box, and second liquid outlet valves are fixedly connected to the two sides of the lower front end of the air suction box, and the second liquid outlet valve is connected to the liquid storage tank The tank is through-connected, and the liquid condensed in the air suction box will be slowly stored inside the liquid storage tank. After a certain amount is stored, it will be connected to the external collection device through the second liquid outlet valve and flow out. The middle part of the front end of the upper surface of the protective cover is fixedly connected with a high-pressure air pump and a ventilation box respectively. The front end of the upper surface of the protective cover is provided with a fourth connecting pipe, and the fourth connecting pipe is through-connected with the ventilation box through a pipeline. Both sides of the lower surface of the protective cover are fixedly connected with a plurality of air outlet nozzles, and the fourth connecting pipe penetrates the protective cover and is through-connected with the air outlet nozzles. Both sides of the upper surface of the protective shell are provided with a plurality of assembly holes, and the air outlet nozzles extend to the inside of the assembly holes and are snap-fitted with the assembly holes. Preferably, three ventilation slots are respectively provided on both sides of the upper end of the positioning slot, a plurality of flow slots are provided on the bottom surface of the positioning slot, and pads are fixedly connected to the edges of the bottom surface of the positioning slot.

[0007] Through the above technical solution, the flow path of the cooling air at the bottom of the battery during the heat dissipation process can be improved through the circulation groove, thereby improving the cooling efficiency of the battery.

[0008] Preferably, positioning plates are fixedly connected to the corners of the inner wall of the positioning frame, and the inner walls of the positioning plates are slidably connected to the outer walls of the battery.

[0009] Preferably, the upper end of the two-way ventilation pipe extends to the inside of the assembly hole, and the upper part of the two-way ventilation pipe is fixedly connected with a gas flow control valve.

[0010] Preferably, a fifth connecting pipe is fixedly connected to the upper portion of the outer wall at the front end of the air suction box, a plurality of air suction nozzles are fixedly connected to the inner wall at the front end of the air suction box, the air nozzles are all through-connected with the fifth connecting pipe, the air outlet of the high-pressure air pump is fixedly connected to a sixth connecting pipe, the sixth connecting pipe is through-connected with the ventilation box, the air inlet of the high-pressure air pump is fixedly connected to a seventh connecting pipe, the seventh connecting pipe is through-connected with the fifth connecting pipe, and two second semiconductor refrigerators are respectively arranged on both sides of the rear end of the ventilation box.

[0011] Preferably, the rear ends of the air suction box and the air outlet are fixedly connected with dustproof nets.

[0012] Preferably, the PLC controller is electrically connected to the high-pressure water pump, the liquid flow control valve, the gas flow control valve, the first temperature monitor, the second temperature monitor, the third temperature monitor, the high-pressure gas pump, the first semiconductor refrigerator, the second semiconductor refrigerator and the wireless communication alarm module; Through the above technical scheme, by electrically connecting the wireless communication alarm module, the high-pressure water pump, the liquid flow control valve, the gas flow control valve, the first temperature monitor, the second temperature monitor, the third temperature monitor, the high-pressure gas pump, the first semiconductor refrigerator and the second semiconductor refrigerator to the PLC controller, the measured temperature can be promptly fed back to the staff or the driver through the wireless communication alarm module, and then when the battery temperature is abnormal, the staff and the driver can discover it in time and perform repairs and maintenance in time.

[0013] The present invention provides a new energy vehicle battery pack with an overheat alarm function. It has the following beneficial effects: 1. The present invention provides a new energy vehicle battery pack with an overheating alarm function. Compared with existing new energy vehicle battery packs, the new energy vehicle battery pack can quickly obtain the real-time temperature of a single battery during operation, and adjust the flow rate of coolant and cooling air based on the temperature of the single battery, thereby achieving the purpose of fast and efficient heat dissipation of the battery.

[0014] 2. The present invention provides a new energy vehicle battery pack with an overheating alarm function. Compared with existing new energy vehicle battery packs, the new energy vehicle battery pack can reduce the humidity in the cooling air, so that during the heat dissipation of the battery, the air humidity inside the protective shell is greatly reduced, thereby ensuring the performance of the battery and reducing the occurrence of safety hazards such as short circuits. At the same time, the wetness of the battery surface is reduced, the occurrence of battery self-discharge is reduced, the aging process of the battery is reduced, and the battery life and performance are further improved.

[0015] 3. The present invention provides a new energy vehicle battery pack with an overheating alarm function. Compared with existing new energy vehicle battery packs, the overall structure of the new energy vehicle battery pack is reasonable and compact, and it is convenient for staff to repair and maintain the battery and the heat dissipation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the forward main structure of the present invention; Figure 2 It is a schematic diagram of the reverse main body structure of the present invention; Figure 3 This is a schematic diagram of the structure of the protective cover being disassembled according to the present invention; Figure 4 It is a schematic diagram of a half-section structure of the bottom plate and the protective shell of the present invention; Figure 5 It is a schematic diagram of the internal structure of the liquid storage box and the positioning frame of the present invention; Figure 6 It is a structural schematic diagram of the positioning frame of the present invention; Figure 7 It is a structural schematic diagram of the bottom plate of the present invention; Figure 8 It is a schematic diagram of the main structure of the protective cover and the air suction box of the present invention; Fig. 9 It is a schematic diagram of the half-section structure of the protective cover and the air suction box of the present invention; Fig.10 It is a side half-section structural schematic diagram of the protective cover and the air suction box of the present invention; Fig.11 It is a bottom view structural schematic diagram of the protective cover of the present invention.

[0017] Among them, 1. bottom plate; 2. protective shell; 3. positioning frame; 4. assembly groove; 5. refrigeration plate; 6. refrigeration pipe; 7. positioning plate; 8. battery; 9. liquid storage box; 10. first semiconductor refrigerator; 11. first liquid outlet valve; 12. liquid inlet head; 13. high-pressure water pump; 14. first connecting pipe; 15. two-way pipe for liquid; 16. liquid flow control valve; 17. one-way valve; 18. second connecting pipe; 19. third connecting pipe; 20. positioning groove; 21. ventilation groove; 22. circulation groove; 23. first temperature monitor; 24. second temperature monitor; 25. pad; 26. protective cover; 27. High-pressure air pump; 28. Ventilation box; 29. ​​Fourth connecting pipe; 30. Air outlet nozzle; 31. Air suction box; 32. Fifth connecting pipe; 33. Air suction nozzle; 34. Sixth connecting pipe; 35. Seventh connecting pipe; 36. Air vent; 37. Third temperature monitor; 38. Air outlet; 39. Dustproof net; 40. Two-way ventilation pipe; 41. Gas flow control valve; 42. Mounting groove; 43. Heat dissipation pipe; 44. Heat dissipation nozzle; 45. Second liquid outlet valve; 46. Liquid storage tank; 47. Assembly hole; 48. PLC controller; 49. Wireless communication alarm module; 50. Second semiconductor refrigerator. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in 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.

[0019] like Figure 1-11As shown, an embodiment of the present invention provides a new energy vehicle battery pack with an overheat alarm function, including a bottom plate 1, a protective shell 2 is fixedly connected to the edge of the upper surface of the bottom plate 1, a plurality of positioning frames 3 are fixedly connected to the middle of the upper surface of the bottom plate 1, a plurality of positioning grooves 20 are opened in the middle of the upper surface of the bottom plate 1, three assembly grooves 4 are opened on the inner walls of the front and rear ends of the positioning frames 3, the interiors of the assembly grooves 4 are fixedly connected to refrigeration plates 5, the interiors of the refrigeration plates 5 are fixedly connected to refrigeration pipes 6, the interiors of the positioning frames 3 are respectively provided with storage batteries 8, and the rear ends of the upper surface of the bottom plate 1 are respectively fixedly connected to a liquid storage box 9 and a high-pressure water pump 13; The water outlet of the high-pressure water pump 13 is fixedly connected with a first connecting pipe 14, and the pipe body of the first connecting pipe 14 is fixedly connected with a plurality of two-way liquid pipes 15, and the two-way liquid pipes 15 penetrate the protective shell 2 and the positioning frame 3 and are connected with the refrigeration pipe 6. A second connecting pipe 18 is fixedly connected to one side of the liquid storage box 9, and one side of the two-way liquid pipe 15 is connected with the second connecting pipe 18, and one side of the two-way liquid pipe 15 is fixedly connected with a one-way valve 17, and one side of the two-way liquid pipe 15 away from the one-way valve 17 is fixedly connected with a liquid flow control valve 16; The upper end of the protective shell 2 is connected with a protective cover 26 by bolts, and the middle part of the front end of the upper surface of the protective cover 26 is fixedly connected with a high-pressure air pump 27 and a ventilation box 28 respectively. The front end of the upper surface of the protective cover 26 is provided with a fourth connecting pipe 29, and the fourth connecting pipe 29 is connected with the ventilation box 28 through a pipeline. Both sides of the lower surface of the protective cover 26 are fixedly connected with a plurality of air outlet nozzles 30, and the fourth connecting pipe 29 penetrates the protective cover 26 and is connected with the air outlet nozzles 30. Both sides of the upper surface of the protective shell 2 are provided with a plurality of assembly holes 47, and the air outlet nozzles 30 extend to the inside of the assembly hole 47 and are engaged with the assembly hole 47; Two first temperature monitors 23 are fixedly connected to the bottom surface of the positioning groove 20, three second temperature monitors 24 are fixedly connected to the front and rear ends of the inner wall of the positioning frame 3, a plurality of third temperature monitors 37 are fixedly connected to the middle of the lower surface of the protective cover 26, and a PLC controller 48 and a wireless communication alarm module 49 are fixedly connected to the rear end of the upper surface of the bottom plate 1; Three first semiconductor refrigerators 10 are fixedly connected to the lower part of the rear end of the liquid storage box 9, a first liquid outlet valve 11 is fixedly connected to one side of the lower part of the rear end of the liquid storage box 9, a liquid inlet head 12 is fixedly connected to one side of the middle part of the upper surface of the liquid storage box 9, and a third connecting pipe 19 is fixedly connected to the water suction port of the high-pressure water pump 13, and one side of the third connecting pipe 19 is connected to the liquid storage box 9.

[0020] A plurality of two-way ventilation pipes 40 are arranged on both sides of the protective shell 2, and mounting grooves 42 are provided at the front and rear ends of the bottom surface of the positioning groove 20, and heat dissipation pipes 43 are fixedly connected inside the mounting grooves 42, and a plurality of heat dissipation nozzles 44 are fixedly connected to the tube bodies of the heat dissipation pipes 43, and the lower ends of the two-way ventilation pipes 40 penetrate the protective shell 2 and the mounting grooves 42 and are connected to the heat dissipation pipes 43, and the middle part of the upper surface of the protective cover 26 is fixedly connected to the air suction box 31, and the middle part of the upper surface of the protective cover 26 is fixedly connected to the air suction box 31. A plurality of vent holes 36 are provided, an air outlet hole 38 is provided at the lower end of the air suction box 31, and liquid storage tanks 46 are provided on the inner walls of both sides of the air suction box 31. Second liquid outlet valves 45 are fixedly connected to both sides of the lower front end of the air suction box 31, and the second liquid outlet valve 45 is connected to the liquid storage tank 46. The liquid condensed in the air suction box 31 will be slowly stored inside the liquid storage tank 46, and after a certain amount is stored, it will be connected to the external collection device through the second liquid outlet valve 45 and flow out; The new energy vehicle battery pack can quickly obtain the real-time temperature of a single battery 8 when it is working, and adjust the flow rate of the coolant and the cooling air in combination with the temperature of the single battery 8, thereby achieving the purpose of fast and efficient heat dissipation of the battery 8. At the same time, the humidity in the cooling air can be reduced, so that during the heat dissipation of the battery 8, the air humidity inside the protective shell 2 is greatly reduced, thereby ensuring the performance of the battery 8 and reducing the occurrence of safety hazards such as short circuits. At the same time, the wetness of the surface of the battery 8 is reduced, the occurrence of self-discharge of the battery 8 is reduced, the aging process of the battery 8 is reduced, and the life and performance of the battery 8 are further improved.

[0021] Three ventilation slots 21 are respectively formed on both sides of the upper end of the positioning slot 20 , a plurality of flow slots 22 are formed on the bottom surface of the positioning slot 20 , and pads 25 are fixedly connected to the edges of the bottom surface of the positioning slot 20 .

[0022] The flow slots 22 can improve the flow path of the cooling air at the bottom of the battery 8 during the heat dissipation process, thereby improving the cooling efficiency of the battery 8.

[0023] The corners of the inner wall of the positioning frame 3 are fixedly connected with positioning plates 7 , and the inner walls of the positioning plates 7 are slidably connected to the outer walls of the battery 8 .

[0024] The upper end of the two-way ventilation pipe 40 extends to the inside of the assembly hole 47 , and the upper part of the two-way ventilation pipe 40 is fixedly connected to a gas flow control valve 41 .

[0025] A fifth connecting pipe 32 is fixedly connected to the upper portion of the outer wall at the front end of the air suction box 31, and a plurality of air suction nozzles 33 are fixedly connected to the inner wall at the front end of the air suction box 31, and the air suction nozzles 33 are all through-connected with the fifth connecting pipe 32. A sixth connecting pipe 34 is fixedly connected to the air outlet of the high-pressure air pump 27, and the sixth connecting pipe 34 is through-connected with the ventilation box 28. A seventh connecting pipe 35 is fixedly connected to the air intake of the high-pressure air pump 27, and the seventh connecting pipe 35 is through-connected with the fifth connecting pipe 32. Two second semiconductor refrigerators 50 are respectively arranged on both sides of the rear end of the ventilation box 28.

[0026] The rear ends of the air suction box 31 and the air outlet 38 are fixedly connected with dustproof nets 39 .

[0027] The PLC controller 48 is electrically connected to the high-pressure water pump 13, the liquid flow control valve 16, the gas flow control valve 41, the first temperature monitor 23, the second temperature monitor 24, the third temperature monitor 37, the high-pressure gas pump 27, the first semiconductor refrigerator 10, the second semiconductor refrigerator 50 and the wireless communication alarm module 49; By electrically connecting the wireless communication alarm module 49, the high-pressure water pump 13, the liquid flow control valve 16, the gas flow control valve 41, the first temperature monitor 23, the second temperature monitor 24, the third temperature monitor 37, the high-pressure air pump 27, the first semiconductor refrigerator 10 and the second semiconductor refrigerator 50 to the PLC controller 48, the measured temperature can be promptly fed back to the staff or the driver through the wireless communication alarm module 49, and when the temperature of the battery 8 is abnormal, the staff and the driver can discover it in time and perform repairs and maintenance in time.

[0028] Working principle: The new energy vehicle battery pack first uses the positioning frame 3 and the positioning plate 7 to facilitate the staff to install the battery 8 inside the protective shell 2. At this time, since there are multiple batteries 8 arranged, the batteries 8 are affected by charging, discharging, long-term driving and external temperature changes. The temperature of multiple batteries 8 when working may be inconsistent. At this time, the first temperature monitor 23 can monitor the temperature of the lower part of a battery 8 in time, the second temperature monitor 24 can monitor the temperature of both sides of the battery 8 in time, and the third temperature monitor 37 can monitor the temperature of the upper part of the battery 8 in time, so as to obtain the real-time temperature of a single battery 8 when working, and then use the PLC controller 48 according to the corresponding single battery 8 The temperature of the battery 8 is controlled by the size of the valve opening of the corresponding liquid flow control valve 16, so that the speed of the coolant flowing through the corresponding refrigeration plate 5 changes. When the temperature of the corresponding battery 8 is too high, the valve opening of the liquid flow control valve 16 becomes larger, and the speed of the coolant flowing through the refrigeration pipe 6 becomes faster, which will more quickly take away the heat generated by the battery 8 when it is working, thereby achieving the effect of rapid cooling and precise cooling. At the same time, the one-way valve 17 prevents the coolant from flowing toward the inside of other refrigeration pipes 6, thereby ensuring the stable cooling of the battery 8. Then, by starting the high-pressure air pump 27, the seventh connecting pipe 35 and the fifth connecting pipe 32 can start to absorb air through the suction nozzle 33. At this time, the air enters the inside of the fourth connecting pipe 29 through the ventilation box 28, and at the same time, Under the action of the cooler 50, the air passing through the ventilation box 28 can be quickly cooled down. At this time, the air enters the heat dissipation pipe 43 through multiple air outlet nozzles 30 and the ventilation two-way pipe 40. At the same time, the PLC controller 48 controls the valve opening of the corresponding gas flow control valve 41 according to the temperature of the corresponding single battery 8, so that the speed of the cooling air flowing through the corresponding heat dissipation pipe 43 changes. When the temperature of the corresponding battery 8 is too high, the valve opening of the gas flow control valve 41 becomes larger, the speed of the cooling air flowing through the heat dissipation pipe 43 becomes faster, and the cooling air ejected from the heat dissipation nozzle 44 also increases, thereby achieving the purpose of quickly cooling the battery 8. At the same time, since the use environment of the new energy battery pack is diverse, it can be adjusted according to the climate, season and precipitation. Under the influence of the environment, the humidity in the air will change. At this time, the heat generated by the battery 8 inside the protective shell 2 can be discharged through the vent hole 36. During the discharge process, the heat will pass through the vent hole 38. At this time, the temperature in the middle of the air intake box 31 will increase, so that when the air with too high humidity flows through the upper part of the air intake box 31, condensation will occur in the upper part of the air intake box 31, condensed into water droplets or water film and slowly stored in the liquid storage tank 46, thereby achieving the purpose of reducing the humidity in the air, effectively reducing the phenomenon of excessive humidity in the protective shell 2 during the heat dissipation of the battery 8, ensuring the performance of the battery 8, reducing the occurrence of safety hazards such as short circuits, and at the same time reducing the wetness of the surface of the battery 8, reducing the occurrence of self-discharge of the battery 8,Reduce the aging process of the battery 8 and further improve the life and performance of the battery 8.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle battery pack with an overheat alarm function, comprising a bottom plate (1), characterized in that: A protective shell (2) is fixedly connected to the edge of the upper surface of the bottom plate (1), a plurality of positioning frames (3) are fixedly connected to the middle of the upper surface of the bottom plate (1), a plurality of positioning grooves (20) are provided in the middle of the upper surface of the bottom plate (1), three assembly grooves (4) are respectively provided on the inner walls of the front and rear ends of the positioning frames (3), a refrigeration plate (5) is fixedly connected to the inside of the assembly grooves (4), a refrigeration pipe (6) is fixedly connected to the inside of the refrigeration plate (5), a storage battery (8) is respectively arranged inside the positioning frames (3), and a liquid storage box (9) and a high-pressure water pump (13) are respectively fixedly connected to the rear end of the upper surface of the bottom plate (1); The water outlet of the high-pressure water pump (13) is fixedly connected to a first connecting pipe (14), the tube body of the first connecting pipe (14) is fixedly connected to a plurality of two-way liquid pipes (15), the two-way liquid pipes (15) pass through the protective shell (2) and the positioning frame (3) and are connected to the refrigeration pipe (6), one side of the liquid storage box (9) is fixedly connected to a second connecting pipe (18), one side of the two-way liquid pipe (15) is connected to the second connecting pipe (18), one side of the two-way liquid pipe (15) is fixedly connected to a one-way valve (17), and the side of the two-way liquid pipe (15) away from the one-way valve (17) is fixedly connected to a liquid flow control valve (16); The upper end of the protective shell (2) is connected to a protective cover (26) by bolts, the bottom surface of the positioning groove (20) is fixedly connected to two first temperature monitors (23), the front end and the rear end of the inner wall of the positioning frame (3) are respectively fixedly connected to three second temperature monitors (24), the middle part of the lower surface of the protective cover (26) is fixedly connected to a plurality of third temperature monitors (37), and the rear end of the upper surface of the bottom plate (1) is respectively fixedly connected to a PLC controller (48) and a wireless communication alarm module (49); The lower portion of the rear end of the liquid storage box (9) is fixedly connected to three first semiconductor refrigerators (10), one side of the lower portion of the rear end of the liquid storage box (9) is fixedly connected to a first liquid outlet valve (11), one side of the middle portion of the upper surface of the liquid storage box (9) is fixedly connected to a liquid inlet head (12), the water suction port of the high-pressure water pump (13) is fixedly connected to a third connecting pipe (19), and one side of the third connecting pipe (19) is connected to the liquid storage box (9).

2. A new energy vehicle battery pack with overheat alarm function according to claim 1, characterized in that: A plurality of two-way ventilation pipes (40) are provided on both sides of the protective shell (2); a mounting groove (42) is provided at the front and rear ends of the bottom surface of the positioning groove (20); a heat dissipation pipe (43) is fixedly connected to the inside of the mounting groove (42); a plurality of heat dissipation nozzles (44) are fixedly connected to the tube body of the heat dissipation pipe (43); the lower ends of the two-way ventilation pipes (40) penetrate the protective shell (2) and the mounting groove (42) and are connected to the heat dissipation pipe (43); an air intake box (31) is fixedly connected to the middle of the upper surface of the protective cover (26); a plurality of air holes (36) are provided in the middle of the upper surface of the protective cover (26); an air outlet hole (38) is provided at the lower end of the air intake box (31); liquid storage tanks (46) are provided on the inner walls of both sides of the air intake box (31); the front of the air intake box (31) is provided with a plurality of air holes (36); and the bottom of the air intake box (31) is provided with a plurality of air holes (36). A second liquid outlet valve (45) is fixedly connected to both sides of the lower end, and the second liquid outlet valve (45) is connected to the liquid storage tank (46). A high-pressure air pump (27) and a ventilation box (28) are fixedly connected to the middle of the front end of the upper surface of the protective cover (26). A fourth connecting pipe (29) is provided at the front end of the upper surface of the protective cover (26), and the fourth connecting pipe (29) is connected to the ventilation box (28) through a pipeline. A plurality of air outlet nozzles (30) are fixedly connected to both sides of the lower surface of the protective cover (26), and the fourth connecting pipe (29) penetrates the protective cover (26) and is connected to the air outlet nozzles (30). A plurality of assembly holes (47) are provided on both sides of the upper surface of the protective shell (2), and the air outlet nozzles (30) extend to the inside of the assembly holes (47) and are snap-fitted with the assembly holes (47).

3. The new energy vehicle battery pack with overheat alarm function according to claim 1, characterized in that: Three ventilation slots (21) are respectively provided on both sides of the upper end of the positioning slot (20), a plurality of flow slots (22) are provided on the bottom surface of the positioning slot (20), and pads (25) are fixedly connected to the edges of the bottom surface of the positioning slot (20).

4. The new energy vehicle battery pack with overheat alarm function according to claim 1, characterized in that: The corners of the inner wall of the positioning frame (3) are fixedly connected with positioning plates (7), and the inner wall of the positioning plate (7) is slidably connected to the outer wall of the storage battery (8).

5. The new energy vehicle battery pack with overheat alarm function according to claim 2, characterized in that: The upper end of the two-way ventilation pipe (40) extends to the interior of the assembly hole (47), and the upper part of the two-way ventilation pipe (40) is fixedly connected to a gas flow control valve (41).

6. The new energy vehicle battery pack with overheat alarm function according to claim 2, characterized in that: A fifth connecting pipe (32) is fixedly connected to the upper portion of the front end outer wall of the air suction box (31); a plurality of air suction nozzles (33) are fixedly connected to the front end inner wall of the air suction box (31); the air suction nozzles (33) are all connected to the fifth connecting pipe (32); a sixth connecting pipe (34) is fixedly connected to the air outlet of the high-pressure air pump (27); the sixth connecting pipe (34) is connected to the ventilation box (28); a seventh connecting pipe (35) is fixedly connected to the air intake of the high-pressure air pump (27); the seventh connecting pipe (35) is connected to the fifth connecting pipe (32); and two second semiconductor refrigerators (50) are respectively arranged on both sides of the rear end of the ventilation box (28).

7. The new energy vehicle battery pack with overheat alarm function according to claim 2, characterized in that: The rear ends of the air suction box (31) and the air outlet hole (38) are both fixedly connected with a dustproof net (39).

8. The new energy vehicle battery pack with overheat alarm function according to claim 1, characterized in that: The PLC controller (48) is electrically connected to the high-pressure water pump (13), the liquid flow control valve (16), the gas flow control valve (41), the first temperature monitor (23), the second temperature monitor (24), the third temperature monitor (37), the high-pressure gas pump (27), the first semiconductor refrigerator (10), the second semiconductor refrigerator (50), and the wireless communication alarm module (49).

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