Battery forced air cooling system based on differential pressure driving of double temperature sensing devices

Abstract

The utility model discloses a kind of battery air-cooled heat dissipation systems based on differential pressure driving of double temperature sensing device, including battery box shell and two heat dissipation mechanisms, heat dissipation mechanism includes hydraulic cylinder A, hydraulic cylinder C, temperature sensing device B, hydraulic cylinder B, temperature sensing device A, rack, gear and louver mechanism, louver mechanism includes deflector and connecting rod, battery box shell both sides are equipped with mounting groove, mounting groove is installed vertical and rotatable connecting rod, connecting rod is installed deflector and is all fixedly connected gear, temperature sensing device A is installed in battery box shell interior, temperature sensing device A connects hydraulic cylinder B piston A, temperature sensing device B is installed in battery box shell exterior, temperature sensing device B connects hydraulic cylinder C piston C, hydraulic cylinder B and hydraulic cylinder C are respectively communicated two chambers of hydraulic cylinder A, hydraulic cylinder A is installed in battery box shell inner wall and hydraulic rod B connects rack, rack and gear are engaged connection. The utility model solves the problem of opening and closing air-cooled system according to the temperature difference change of battery box inside and outside.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle battery heat dissipation technology, specifically relating to a battery air-cooling heat dissipation system driven by pressure difference of dual temperature sensing devices. Background Technology

[0002] As the core energy source of new energy vehicles, the performance and safety of the vehicle are directly determined by the efficiency of its thermal management system. Currently, air cooling is still a common thermal management solution in some models, especially in entry-level electric vehicles where cost is a major concern. This technology uses air as a medium and utilizes fans and air duct structures to cool the battery.

[0003] Although air-cooled systems have significant advantages such as simple structure, low manufacturing cost and convenient maintenance, traditional air-cooled systems still have the problem of not being able to adaptively adjust the opening and closing of the air-cooling system according to the temperature difference between the inside and outside of the battery box.

[0004] Therefore, there is an urgent need for a battery air-cooling system driven by pressure difference from dual temperature sensors to solve the problem of how to adaptively adjust the opening and closing of the air-cooling system according to the temperature difference between the inside and outside of the battery box. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a battery air-cooling system driven by differential pressure from dual temperature sensing devices, thereby solving the problem of how to adaptively adjust the opening and closing of the air-cooling system according to changes in the temperature difference between the inside and outside of the battery box.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensors includes a battery housing and two heat dissipation mechanisms symmetrically installed on the left and right sides of the battery housing. Each heat dissipation mechanism includes a hydraulic cylinder A, a hydraulic cylinder C, a temperature sensor B, a hydraulic cylinder B, a temperature sensor A, a rack, a gear, and a louver mechanism. The louver mechanism includes several guide plates and connecting rods. Mounting slots communicating with the inner cavity are provided on both the left and right sides of the battery housing. Several vertical and rotatable connecting rods are evenly installed in the mounting slots. A guide plate is installed on each connecting rod, and a gear is fixedly connected to each connecting rod. Temperature sensor A is installed inside the battery housing, and temperature sensor A is used to connect to and drive the piston A of hydraulic cylinder B to move. Temperature sensor B is installed outside the battery housing, and temperature sensor B is used to connect to and drive the piston C of hydraulic cylinder C to move. Hydraulic cylinders B and C are respectively connected to the two chambers of hydraulic cylinder A. Hydraulic cylinder A is installed on the inner wall of the battery housing, and the hydraulic rod B used for output is connected to a rack, which meshes with the gear.

[0008] To optimize the above technical solution, the specific measures also include:

[0009] Furthermore, the temperature sensing device A includes a housing A, paraffin wax A, a central push rod A, and a spring A. The housing A has a paraffin wax mounting cavity A and an adjustment cavity inside. One end of the central push rod A is slidably disposed in the paraffin wax mounting cavity A, and the other end of the central push rod A extends out of the paraffin wax mounting cavity A in a sealed manner, passes through the adjustment cavity to the outside of the housing A, and the end is connected to the piston A through a hydraulic rod A. The central push rod A is fitted with a spring A on the outside of the adjustment cavity. One end of the spring A is connected to the adjustment cavity, and the other end is connected to the side wall of the central push rod A. The paraffin wax A is filled in the paraffin wax mounting cavity A.

[0010] Furthermore, the outer side of the temperature sensing device A is provided with a mounting ring, and the mounting ring is provided with several bolt holes A. The inner wall of the battery box housing is provided with a fixing bracket C. The temperature sensing device A is fixedly mounted on the fixing bracket C by bolts and bolt holes A.

[0011] Furthermore, the temperature sensing device B includes a housing B, paraffin wax B, a central push rod B, and a spring B. The housing B has a paraffin wax mounting cavity B inside. One end of the central push rod B is slidably disposed in the paraffin wax mounting cavity B, and the other end of the central push rod B extends out of the paraffin wax mounting cavity B in a sealed manner and passes through to the outside of the housing B. The end of the central push rod B is connected to the piston C through a hydraulic rod C. The spring B is sleeved on the outside of the central push rod B extending out of the paraffin wax mounting cavity B. One end of the spring B is connected to the outer wall of the paraffin wax mounting cavity B, and the other end is connected to the side wall of the central push rod B. The paraffin wax B fills the paraffin wax mounting cavity B.

[0012] Furthermore, a fixed bracket B is provided on the outside of the temperature sensing device B, and several extension brackets are provided on the fixed bracket B. Each extension bracket has a bolt hole B. The temperature sensing device B is installed on the outside of the battery box housing through bolts and bolt holes B.

[0013] Furthermore, the rodless chamber of the hydraulic cylinder B is filled with hydraulic oil, and the rodless chamber of the hydraulic cylinder B is connected to the hydraulic cylinder A through pipeline B.

[0014] Furthermore, the rodless chamber of the hydraulic cylinder C is filled with hydraulic oil, and the rodless chamber of the hydraulic cylinder C is connected to the hydraulic cylinder A through pipeline A.

[0015] Furthermore, hydraulic cylinder B is connected to the rodless chamber of hydraulic cylinder A via pipe B, and hydraulic cylinder C is connected to the rod chamber of hydraulic cylinder A via pipe A.

[0016] Furthermore, the battery box housing is provided with a sliding sleeve inside, and the end of the rack away from the hydraulic rod B is connected to a sliding rod, which is slidably disposed in the sliding sleeve.

[0017] Furthermore, a connecting plate is provided radially on the connecting rod, and the guide plate is connected through the connecting plate.

[0018] The beneficial effects of this utility model are:

[0019] This utility model, through the setting of a heat dissipation mechanism, can use temperature sensing device A to sense the internal battery temperature and temperature sensing device B to sense the external ambient temperature during use. The temperature difference between the battery and the ambient temperature is used to drive hydraulic cylinder B or hydraulic cylinder C to deliver hydraulic oil to hydraulic cylinder A to form a pressure difference, which in turn drives the rack to move. The connecting rod can then drive the guide plate to open and close accordingly through gear transmission, so as to realize the opening and closing control of the guide plate of the louver mechanism.

[0020] This system responds only to the temperature difference between the battery itself and the ambient temperature, effectively distinguishing between battery overheating and high ambient temperatures. The system only activates the airflow deflector and performs air cooling when the battery requires heat dissipation, i.e., when its temperature is abnormally higher than the ambient temperature. This avoids ineffective operation of the cooling mechanism when the ambient temperature is simply high, achieving intelligent and precise control of cooling start-up and shutdown. The entire system is a purely mechanical structure, requiring no external power, and boasts advantages such as reliable structure and zero energy consumption. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of a battery air-cooling heat dissipation system based on pressure difference driven by dual temperature sensing devices proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the internal structure of a battery air-cooling heat dissipation system based on pressure difference driven by dual temperature sensing devices proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of a rack and pinion connection for a battery air-cooling system driven by pressure difference from dual temperature sensors, as proposed in this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the temperature sensing device A in a battery air-cooling heat dissipation system based on pressure difference driven by dual temperature sensing devices proposed in this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the temperature sensing device B in a battery air-cooling heat dissipation system based on pressure difference driven by dual temperature sensing devices proposed in this utility model.

[0026] Figure 6 This is a schematic diagram of the structure of hydraulic cylinder A in a battery air-cooling heat dissipation system driven by pressure difference from dual temperature sensing devices, as proposed in this utility model.

[0027] Reference numerals: 1-Battery box housing, 2-Guide plate, 3-Connecting rod, 4-Gear, 5-Rack, 6-Hydraulic cylinder A, 7-Pipeline A, 8-Pipeline B, 9-Hydraulic cylinder B, 10-Hydraulic cylinder C, 11-Temperature sensing device A, 12-Temperature sensing device B, 13-Housing housing A, 14-Paraffin wax A, 15-Center push rod A, 16-Bolt hole A, 17-Spring A, 18-Hydraulic rod A, 19-Piston A, 20-Piston B, 21-Hydraulic rod B, 22-Housing housing B, 23-Paraffin wax B, 24-Center push rod B, 25-Bolt hole B, 26-Spring B, 27-Hydraulic rod C, 28-Piston C, 103-Fixed bracket B, 104-Fixed bracket C. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings.

[0029] As attached Figure 1 Appendix Figure 2 and attached Figure 3 As shown, an embodiment of this utility model discloses a battery air-cooling heat dissipation system driven by differential pressure from dual temperature sensing devices. The system includes a battery housing 1 and two heat dissipation mechanisms symmetrically installed on the left and right sides of the battery housing 1. Each heat dissipation mechanism includes a hydraulic cylinder A6, a hydraulic cylinder C10, a temperature sensing device B12, a hydraulic cylinder B9, a temperature sensing device A11, a rack 5, a gear 4, and a louver mechanism. The louver mechanism includes several guide plates 2 and connecting rods 3. Mounting grooves communicating with the inner cavity are provided on both the left and right sides of the battery housing 1. Several vertically rotatable connecting rods 3 are evenly installed in the mounting grooves. Each connecting rod... A guide plate 2 is installed on the 3, and gears 4 are fixedly connected to the connecting rod 3. A temperature sensing device A11 is installed inside the battery box housing 1. The temperature sensing device A11 is used to connect to and drive the piston A19 of the hydraulic cylinder B9 to move. A temperature sensing device B12 is installed outside the battery box housing 1. The temperature sensing device B12 is used to connect to and drive the piston C28 of the hydraulic cylinder C10 to move. The hydraulic cylinders B9 and C10 are respectively connected to the two chambers of the hydraulic cylinder A6. The hydraulic cylinder A6 is installed on the inner wall of the battery box housing 1, and the hydraulic rod B21 used for output is connected to the rack 5. The rack 5 is meshed with the gear 4.

[0030] This utility model, through the setting of the heat dissipation mechanism, can use the temperature sensing device A11 to sense the internal battery temperature and the temperature sensing device B12 to sense the external ambient temperature during use. The difference between the battery temperature and the ambient temperature drives the hydraulic cylinder B9 or the hydraulic cylinder C10 to deliver hydraulic oil to the hydraulic cylinder A6 to form a pressure difference, which drives the rack 5 to move. The connecting rod 3 can be driven by the gear 4 to drive the guide plate 2 to open and close accordingly, so as to realize the opening and closing control of the guide plate 2 of the louver mechanism.

[0031] This system responds only to the temperature difference between the battery itself and the ambient temperature, effectively distinguishing between battery overheating and high ambient temperatures. The system only activates the airflow deflector 2 for air cooling when the battery requires heat dissipation, i.e., when its temperature is abnormally higher than the ambient temperature. This avoids ineffective operation of the cooling mechanism when the ambient temperature is simply high, achieving intelligent and precise control of cooling start-up and shutdown. The entire system is a purely mechanical structure, requiring no external power drive, and boasts advantages such as reliable structure and zero energy consumption.

[0032] As attached Figure 4 As shown, in a specific embodiment based on the above, the temperature sensing device A11 includes a housing A13, paraffin wax A14, a central push rod A15, and a spring A17. The housing A13 has a paraffin wax mounting cavity A and an adjustment cavity inside. One end of the central push rod A15 is slidably disposed in the paraffin wax mounting cavity A, and the other end of the central push rod A15 extends out of the paraffin wax mounting cavity A in a sealed manner and passes through the adjustment cavity to the outside of the housing A13. The end of the central push rod A15 is connected to the piston A19 through a hydraulic rod A18. The spring A17 is sleeved on the outside of the adjustment cavity of the central push rod A15. One end of the spring A17 is connected to the adjustment cavity, and the other end is connected to the side wall of the central push rod A15. The paraffin wax A14 is filled in the paraffin wax mounting cavity A.

[0033] In another specific embodiment based on the above, a mounting ring is provided on the outer side of the temperature sensing device A11, and several bolt holes A16 are provided on the mounting ring. A fixing bracket C104 is provided on the inner wall of the battery box housing 1. The temperature sensing device A11 is fixedly mounted on the fixing bracket C104 by bolts and bolt holes A16.

[0034] As attached Figure 5 As shown, in another specific embodiment based on the above, the temperature sensing device B12 includes a housing B22, paraffin wax B23, a central push rod B24, and a spring B26. The housing B22 has a paraffin wax mounting cavity B inside. One end of the central push rod B24 is slidably disposed in the paraffin wax mounting cavity B, and the other end of the central push rod B24 extends out of the paraffin wax mounting cavity B in a sealed manner and passes through to the outside of the housing B22. The end of the central push rod B24 is connected to the piston C28 through a hydraulic rod C27. The spring B26 is sleeved on the outside of the central push rod B24 extending out of the paraffin wax mounting cavity B. One end of the spring B26 is connected to the outer wall of the paraffin wax mounting cavity B, and the other end is connected to the side wall of the central push rod B24. The paraffin wax B23 is filled in the paraffin wax mounting cavity B.

[0035] In another specific embodiment based on the above, a fixed bracket B103 is provided on the outside of the temperature sensing device B12, and several extension brackets are provided on the fixed bracket B103. Each extension bracket is provided with a bolt hole B25. The temperature sensing device B12 is installed on the outside of the battery box housing 1 through bolts and bolt holes B25.

[0036] As attached Figure 6As shown, in another specific embodiment based on the above, the rodless chamber of hydraulic cylinder B9 is filled with hydraulic oil, and the rodless chamber of hydraulic cylinder B9 is connected to hydraulic cylinder A6 through pipe B8. The rodless chamber of hydraulic cylinder C10 is filled with hydraulic oil, and the rodless chamber of hydraulic cylinder C10 is connected to hydraulic cylinder A6 through pipe A7. Hydraulic cylinder B9 is connected to the rodless chamber of hydraulic cylinder A6 through pipe B8, and hydraulic cylinder C10 is connected to the rod chamber of hydraulic cylinder A6 through pipe A7.

[0037] In another specific embodiment based on the above, the battery box housing 1 is provided with a sliding sleeve inside, and the end of the rack 5 away from the hydraulic rod B21 is connected to the sliding rod, which is slidably disposed in the sliding sleeve.

[0038] In another specific embodiment based on the above, a connecting plate is provided on the connecting rod 3 in the radial direction, and the guide plate 2 is connected through the connecting plate.

[0039] One specific embodiment of this utility model is as follows:

[0040] When both the ambient temperature and the battery temperature are below the specified values, the paraffin wax A14 and B23 in temperature sensing devices A11 and B12 do not expand, and their thrust is lower than the spring force of springs A17 and B26. The central push rods A15 and B24 do not move. The oil in the rodless chambers of hydraulic cylinders B9 and C10 is stationary, and there is no oil change in either the rod or rodless chambers of hydraulic cylinder A6. Piston B20 is in the intermediate position. At this time, the battery overheat protection device is not working.

[0041] When the ambient temperature is below the specified value while the battery temperature is above the specified value, the paraffin wax A14 in the temperature sensing device A11 expands, and its thrust exceeds the spring force of spring A17. The central push rod A15 moves, pushing piston A19 forward. The oil in the rodless chamber of hydraulic cylinder B9 is squeezed by piston A19 and enters the rodless chamber of hydraulic cylinder 6 through pipe B8. At this time, the paraffin wax B23 in the temperature sensing device B12 contracts due to the low temperature, the central push rod B24 retracts, and the oil in the rod chamber of hydraulic cylinder 6 flows into hydraulic cylinder C10. At this time, the oil in the rodless chamber of hydraulic cylinder A6 pushes piston B20 to move, the battery overheat protection device is activated, rack 5 moves, and the gear 4 connected to it rotates, driving connecting rod 3 to move, thereby opening the guide plates 2 on both sides to dissipate heat from the inside of the battery.

[0042] When the ambient temperature is higher than the specified value and the battery temperature is lower than the specified value, the paraffin wax B23 in the temperature sensing device B12 expands, and its thrust is greater than the spring force of spring B26. The central push rod B24 moves, pushing the piston C28 forward. The oil in the rodless chamber of hydraulic cylinder C10 enters the rod chamber of hydraulic cylinder A6 through pipe A7. At this time, the paraffin wax A14 in the temperature sensing device A11 contracts due to the low temperature, the central push rod A15 retracts, and the oil in the rodless chamber of hydraulic cylinder 6 flows into hydraulic cylinder B9. At this time, the oil in the rod chamber of hydraulic cylinder A6 pushes the piston B20 to move, the rack 5 moves, and the gear 4 connected to it rotates, driving the connecting rod 3 to move, thereby closing the guide plates 2 on both sides to prevent foreign objects from entering the battery.

[0043] When both the ambient temperature and the battery temperature are higher than the specified values, the paraffin wax A14 and paraffin wax B23 in the temperature sensing devices A11 and B12 expand, the central push rod A15 and central push rod B24 do not move, and the piston B20 in the hydraulic cylinder A6 remains in the middle position. At this time, the battery overheat protection device is not working, and the guide plate 2 remains closed, thereby reducing wind resistance.

[0044] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in this utility model are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0045] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A battery air-cooled heat dissipation system based on differential pressure driven by dual temperature sensing devices, characterized in that: The battery box housing (1) includes a battery box housing (1) and two heat dissipation mechanisms symmetrically installed on the left and right sides of the battery box housing (1). Each heat dissipation mechanism includes a hydraulic cylinder A (6), a hydraulic cylinder C (10), a temperature sensing device B (12), a hydraulic cylinder B (9), a temperature sensing device A (11), a rack (5), a gear (4), and a louver mechanism. The louver mechanism includes several guide plates (2) and connecting rods (3). The left and right sides of the battery box housing (1) are provided with mounting grooves that communicate with the inner cavity. Several vertical and rotatable connecting rods (3) are installed at equal intervals in the mounting grooves. Each connecting rod (3) is equipped with a guide plate (2), and each connecting rod (3) is fixedly connected to a... The gear (4) and the battery box housing (1) are equipped with a temperature sensing device A (11). The temperature sensing device A (11) is used to connect and drive the piston A (19) of the hydraulic cylinder B (9) to move. The battery box housing (1) is equipped with a temperature sensing device B (12). The temperature sensing device B (12) is used to connect and drive the piston C (28) of the hydraulic cylinder C (10) to move. The hydraulic cylinder B (9) and the hydraulic cylinder C (10) are respectively connected to the two chambers of the hydraulic cylinder A (6). The hydraulic cylinder A (6) is installed on the inner wall of the battery box housing (1), and the hydraulic rod B (21) used for output is connected to the rack (5). The rack (5) is meshed with the gear (4).

2. The battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 1, characterized in that: The temperature sensing device A (11) includes a housing A (13), paraffin wax A (14), a central push rod A (15), and a spring A (17). The housing A (13) has a paraffin wax mounting cavity A and an adjustment cavity inside. One end of the central push rod A (15) is slidably disposed in the paraffin wax mounting cavity A, and the other end of the central push rod A (15) extends out of the paraffin wax mounting cavity A in a sealed manner and passes through the adjustment cavity to the outside of the housing A (13). The end of the central push rod A (15) is connected to the piston A (19) through a hydraulic rod A (18). The central push rod A (15) is located outside the adjustment cavity and is fitted with a spring A (17). One end of the spring A (17) is connected to the adjustment cavity, and the other end is connected to the side wall of the central push rod A (15). The paraffin wax A (14) is filled in the paraffin wax mounting cavity A.

3. The battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 1, characterized in that: The temperature sensing device A (11) has a mounting ring on its outer side, and several bolt holes A (16) are provided on the mounting ring. The inner wall of the battery box housing (1) is provided with a fixing bracket C (104). The temperature sensing device A (11) is fixedly mounted on the fixing bracket C (104) by bolts and bolt holes A (16).

4. The battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 1, characterized in that: The temperature sensing device B (12) includes a housing B (22), paraffin wax B (23), a central push rod B (24), and a spring B (26). The housing B (22) has a paraffin wax mounting cavity B inside. One end of the central push rod B (24) is slidably disposed in the paraffin wax mounting cavity B, and the other end of the central push rod B (24) extends out of the paraffin wax mounting cavity B in a sealed manner and passes through to the outside of the housing B (22). The end of the central push rod B (24) is connected to the piston C (28) through a hydraulic rod C (27). The spring B (26) is sleeved on the outside of the central push rod B (24) extending out of the paraffin wax mounting cavity B. One end of the spring B (26) is connected to the outer wall of the paraffin wax mounting cavity B, and the other end is connected to the side wall of the central push rod B (24). The paraffin wax B (23) is filled in the paraffin wax mounting cavity B.

5. A battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 1, characterized in that: The temperature sensing device B (12) is provided with a fixed bracket B (103) on its outer side. The fixed bracket B (103) is provided with several extension brackets. Each extension bracket is provided with a bolt hole B (25). The temperature sensing device B (12) is installed on the outer side of the battery box housing (1) by bolts and bolt holes B (25).

6. The battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 1, characterized in that: The rodless chamber of the hydraulic cylinder B (9) is filled with hydraulic oil, and the rodless chamber of the hydraulic cylinder B (9) is connected to the hydraulic cylinder A (6) through the pipeline B (8).

7. A battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 6, characterized in that: The rodless chamber of the hydraulic cylinder C(10) is filled with hydraulic oil, and the rodless chamber of the hydraulic cylinder C(10) is connected to the hydraulic cylinder A(6) through the pipeline A(7).

8. A battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 7, characterized in that: Hydraulic cylinder B (9) is connected to the rodless chamber of hydraulic cylinder A (6) through pipeline B (8), and hydraulic cylinder C (10) is connected to the rod chamber of hydraulic cylinder A (6) through pipeline A (7).

9. A battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 1, characterized in that: The battery box housing (1) is provided with a sliding sleeve inside. The end of the rack (5) away from the hydraulic rod B (21) is connected to the sliding rod, which is slidably disposed in the sliding sleeve.

10. A battery air-cooling heat dissipation system based on differential pressure driven by dual temperature sensing devices according to claim 1, characterized in that: The connecting rod (3) is provided with a connecting plate along the radial direction, and the guide plate (2) is connected through the connecting plate.

Images