A device for heat dissipation of energy storage battery system

Abstract

This application relates to the field of battery heat dissipation technology, specifically disclosing a device for dissipating heat from an energy storage battery pack system. The device is mounted on a battery pack, comprising a housing and a plurality of batteries disposed within the housing. The batteries are provided with poles, each of which is provided with a conductive sheet. The device comprises a liquid-cooled radiator and a heat-conducting sheet. The liquid-cooled radiator comprises a water tank, a pump, a liquid-cooling plate, and a heat exchanger connected end to end. The water tank, pump, and heat exchanger are all disposed on the exterior of the housing, while the liquid-cooling plate is located on the interior of the housing. The heat-conducting sheet abuts against the conductive sheet, and the liquid-cooling plate is connected to the heat-conducting sheet. This application can enhance the heat dissipation effect of an energy storage battery pack.

Description

Technical Field

[0001] The present application relates to the technical field of battery heat dissipation, and in particular to a device for heat dissipation of an energy storage battery pack system. Background Art

[0002] The heating process of energy storage battery packs occurs in two phases: charging and discharging. Especially during high-rate discharge, the battery generates heat quickly and at high levels. Heat is primarily concentrated in the positive and negative terminals of the battery, making rapid heat dissipation from these terminals particularly important.

[0003] Generally, the traditional heat dissipation method is to blow air over the entire battery pack to dissipate heat through heat exchange with the air. However, this method has low heat dissipation efficiency. When the battery charge and discharge rates are high, heat is easily concentrated, affecting the battery life and even causing danger. Summary of the Invention

[0004] In order to enhance the heat dissipation effect of an energy storage battery pack, the present application provides a device for heat dissipation of an energy storage battery pack system.

[0005] The present application provides a device for dissipating heat from an energy storage battery system using the following technical solutions:

[0006] A device for dissipating heat from an energy storage battery pack system is provided on the battery pack. The battery pack includes a shell and multiple batteries arranged in the shell. The batteries are provided with poles, and the poles are provided with conductive plates, including a liquid-cooled radiator and a thermal conductive plate. The liquid-cooled radiator includes a water tank, a pump body, a liquid cooling plate and a heat exchanger connected end to end. The water tank, pump body and heat exchanger are all provided on the outside of the shell. The liquid cooling plate is located on the inside of the shell. The thermal conductive plate is abutted against the conductive plate, and the liquid cooling plate is connected to the thermal conductive plate.

[0007] By adopting the above technical solution, the heat emitted from the pole will be transferred to the conductive sheet, which will then transfer the heat to the thermal conductive sheet, and then the thermal conductive sheet will transfer the heat to the liquid cooling plate. The liquid cooling plate has coolant flowing in it, so it can take away the heat, thereby quickly cooling the pole, helping to enhance the heat dissipation effect and extend the service life of the battery.

[0008] Optionally, there are multiple heat conducting plates, each of which is against the conductive plates on the two poles, and there are multiple corresponding liquid cooling plates, each of which corresponds to a heat conducting plate. A connecting pipe is connected between two adjacent liquid cooling plates, and the connecting pipe is connected to the interior of the liquid cooling plate.

[0009] By adopting the above technical solution, the number of liquid cooling plates can be selected according to the actual number of batteries, so the applicability of the device is stronger.

[0010] Optionally, each of the heat conducting sheets abuts against the conductive sheets on the poles of two adjacent batteries.

[0011] By adopting the above technical solution, the length direction of the liquid cooling plate is parallel to the length direction of the battery pack, thereby increasing the distance between the two liquid cooling plates and making the length of the connecting pipe longer, which helps to extend the flow path of the coolant and thus enhance the heat dissipation effect of the coolant.

[0012] Optionally, a blower mechanism is provided on one side of the heat conducting plate, and the blower mechanism includes fan blades and a drive assembly. The fan blades are arranged in the shell, and there are multiple fan blades. The fan blades include a connecting shaft rotatably arranged on the shell and a plurality of blades arranged in a ring on the connecting shaft. The drive assembly is used to drive the connecting shaft to rotate.

[0013] By adopting the above technical solution, the driving component drives the connecting shaft to rotate, and the connecting shaft drives the blades to rotate, thereby blowing air on the surface of the heat conducting plate, accelerating the gas flow in the shell, thereby enhancing the heat dissipation of the heat conducting plate and helping to enhance the heat dissipation effect.

[0014] Optionally, the driving assembly includes a rotating rod, a first bevel gear set and a power component. The rotating rod is rotatably arranged in the shell. The rotating rod is provided with multiple and spaced parallel distributions. The number of the first bevel gear sets is the same as the number of connecting shafts. Each of the first bevel gear sets corresponds to a connecting shaft. The first bevel gear set is arranged between the connecting shaft and the rotating rod, and the power component is used to drive the rotating rod to rotate.

[0015] By adopting the above technical solution, the power component drives the rotating rod to rotate. Under the action of the first bevel gear set, the rotation of the rotating rod can drive the connecting shaft to rotate, thereby accelerating the heat dissipation of the heat conducting plate.

[0016] Optionally, the power component includes a rotating power member, a rotating shaft and a second bevel gear group, the rotating power member is arranged on the shell, the rotating shaft is connected to the output end of the rotating power member, the rotating shaft is located in the shell, the number of the second bevel gear groups is the same as the number of rotating rods, each of the second bevel gear groups corresponds to a rotating rod, and the second bevel gear group is connected between the rotating rod and the rotating shaft.

[0017] By adopting the above technical solution, the rotating power part drives the rotating shaft to rotate. Under the action of the second bevel gear set, the rotating shaft can drive the rotating rod to rotate. Therefore, one power source can drive multiple connecting shafts to rotate through the rotating rod, which is more energy-efficient and helps to reduce costs.

[0018] Optionally, an exhaust fan is provided on the shell, the air inlet of the exhaust fan is located inside the shell, and the air outlet of the exhaust fan is located outside the shell.

[0019] By adopting the above technical solution, since there are multiple batteries, a large amount of heat is generated during operation, which makes the air temperature in the shell higher. The exhaust fan can draw out the hotter air in the shell, thereby enhancing the heat dissipation effect.

[0020] Optionally, an exhaust pipe is connected to the air inlet of the exhaust fan, and the exhaust pipe is located in the shell. There are two exhaust pipes, which are respectively located at both ends of the shell.

[0021] By adopting the above technical solution, the provision of the exhaust duct can increase the air intake volume, thereby further enhancing the heat dissipation effect.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. During battery pack operation, the heat generated on the poles is transferred to the thermal conductive sheet through the conductive sheet. The thermal conductive sheet is connected to the liquid cooling plate. Coolant flows through the liquid cooling plate, which can quickly remove the heat and avoid heat accumulation in the positive and negative poles of the battery, thereby ensuring the temperature balance of the battery pack and helping to extend the service life of the battery pack.

[0024] 2. The setting of the air blowing mechanism can blow air to the surface of the heat conducting sheet, thereby accelerating the air flow, enhancing the heat dissipation of the heat conducting sheet, and helping to enhance the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0026] Figure 2 This is a schematic diagram of the structure of Example 1 of the present application with the housing hidden;

[0027] Figure 3 This is an enlarged schematic diagram of the structure of the heat conducting plate in Example 1 of the present application;

[0028] Figure 4 This is a schematic diagram of the structure of the drive assembly in Example 2 of the present application;

[0029] Figure 5 This is a schematic diagram of the internal structure of Example 2 of the present application after the mounting plate is hidden.

[0030] Figure numerals: 1. Shell; 11. Heat dissipation hole; 12. Mounting plate; 2. Battery; 21. Pole; 3. Liquid-cooled radiator; 31. Liquid-cooled plate; 311. Connecting pipe; 32. Delivery pipe; 4. Heat-conducting plate; 5. Fan blade; 51. Connecting shaft; 52. Blade; 6. Drive assembly; 61. Rotating rod; 62. First bevel gear set; 621. First driving bevel gear; 622. First driven bevel gear; 63. Power component; 631. Motor; 632. Rotating shaft; 633. Second bevel gear set; 6331. Second driving bevel gear; 6332. Second driven bevel gear; 7. Exhaust fan; 8. Exhaust pipe; 81. Exhaust port; 9. Liquid-cooled block. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] The embodiment of the present application discloses a device for heat dissipation of an energy storage battery pack system, which is described by taking its application on a battery pack as an example. Figure 1 and Figure 2 The battery pack includes a shell 1 and a battery 2 arranged in the shell 1. A plurality of heat dissipation holes 11 are provided on the outer wall of the shell 1, which helps to enhance the heat dissipation of the battery pack. There are multiple batteries 2 arranged in an array, the batteries form two rows, and two adjacent batteries 2 are against each other. A pole 21 is provided at the top of the battery 2, and there are two poles 21, corresponding to the positive and negative poles of the battery 2 respectively. A conductive sheet (not shown in the figure) is installed on the surface of the pole 21, and the conductive sheet is against the pole 21. The conductive sheet is connected to the electrical component, so that the battery pack can supply power to the electrical component normally.

[0034] Reference Figure 2 and Figure 3 The device for dissipating heat from the energy storage battery system includes a heat conducting sheet 4 and a liquid cooling radiator 3. The heat conducting sheet 4 is located on top of the conductive sheet, and the heat conducting sheet 4 abuts the conductive sheet. The heat conducting sheet 4 is a metal sheet with strong thermal conductivity, and the heat conducting sheet 4 and the conductive sheet are insulated from each other. Therefore, the heat generated by the pole 21 can be transferred to the heat conducting sheet 4 through the conductive sheet.

[0035] The liquid-cooled radiator 3 comprises a water tank, a pump, a liquid cooling plate 31, a heat exchanger, and a delivery pipe 32. The water tank, pump, and heat exchanger are all located outside the housing 1. In this embodiment, the coolant is water. The pump is a water pump, fixedly connected to the water tank, with its water inlet communicating with the interior of the water tank. Two delivery pipes 32 are provided, one of which connects the water outlet of the pump to the liquid cooling plate 31. The liquid cooling plate 31 has a cavity within it to facilitate the flow of cooling water. The liquid cooling plate 31 is located within the housing 1, positioned to one side of the heat conducting plate 4, with the latter abutting against the latter. Another delivery pipe 32 connects the liquid cooling plate 31 to the heat exchanger, with the end of the heat exchanger facing away from the liquid cooling plate 31 connected to the water tank. The heat exchanger has a large surface area and is equipped with an auxiliary fan to accelerate the cooling of the water within the heat exchanger.

[0036] When the battery pack is working, the pump body sends water in the water tank to the liquid cooling plate 31. The heat on the heat conducting plate 4 can be transferred to the liquid cooling plate 31. Then, the water in the liquid cooling plate 31 is heated and flows into the heat exchanger for cooling. The cooled water flows into the water tank again, and then the heat at the pole 21 is continuously taken away through the circulation of water, avoiding heat accumulation at the pole 21, thereby enhancing the heat dissipation effect.

[0037] There are multiple heat conducting plates 4, which are arranged at staggered intervals. Each heat conducting plate 4 is against the conductive plates on the poles 21 on the two adjacent batteries 2. There are multiple liquid cooling plates 31, and the number of liquid cooling plates 31 is the same as the number of heat conducting plates 4. Each liquid cooling plate 31 is fixedly connected to a heat conducting plate 4. The multiple liquid cooling plates 31 are arranged in two rows, corresponding to the poles 21 on both sides of the battery 2 respectively; the adjacent liquid cooling plates 31 are arranged at intervals, and a connecting pipe 311 is connected between the adjacent liquid cooling plates 31. The connecting pipe 311 is connected to the interior of the liquid cooling plate 31, so that the multiple liquid cooling plates 31 can be interconnected through the connecting pipe 311, so that the cooling water can flow through each liquid cooling plate 31 in turn, thereby enhancing the heat dissipation at each pole 21.

[0038] In addition, in this embodiment, in order to adapt to different heat dissipation requirements, the liquid cooling plate 31 and the heat conducting sheet 4 on the top surface of one row of batteries 2 can be replaced with a liquid cooling block 9. A cavity is provided inside the liquid cooling block 9 for cooling water to flow in. The area of ​​the liquid cooling block 9 is larger than the area of ​​the liquid cooling plate 31. The liquid cooling block 9 directly covers the top surface of the conductive sheet. Therefore, the heat on the pole 21 can be directly transferred to the liquid cooling block 9 through the conductive sheet. Then the water in the liquid cooling block 9 absorbs heat and heats up, thereby accelerating the heat dissipation of the pole 21. Since the liquid cooling block 9 and the liquid cooling plate 31 are of different sizes and have different installation positions, and a heat conducting sheet 4 is also provided between the liquid cooling plate 31 and the conductive sheet, the heat dissipation capabilities of the liquid cooling block 9 and the liquid cooling plate 31 are different. The liquid cooling block 9 has a stronger heat dissipation effect and can be selected according to actual needs, thereby reducing costs while ensuring heat dissipation capabilities.

[0039] The implementation principle of Example 1 is as follows: when the battery pack is working, heat is generated on the pole 21, and the heat on the pole 21 is transferred to the heat conductive plate 4 through the conductive plate, and then the heat conductive plate 4 transfers the heat to the liquid cooling plate 31. The cooling water circulating in the liquid cooling plate 31 continuously absorbs the heat, thereby accelerating the heat dissipation of the pole 21.

[0040] Example 2

[0041] Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that a blower mechanism is further provided on one side of the heat conducting sheet 4 in this embodiment, and the blower mechanism includes fan blades 5 and a drive assembly 6. The number of fan blades 5 is the same as the number of heat conducting sheets 4, and each fan blade 5 is located directly above a heat conducting sheet 4. A mounting plate 12 is fixedly connected to the housing 1 on one side near its own top wall. The mounting plate 12 is located above the heat conducting sheet 4, and the mounting plate 12 is parallel to the end surface of the top of the battery 2. The fan blades 5 are provided on the mounting plate 12, and the fan blades 5 include a connecting shaft 51 and blades 52. The connecting shaft 51 is perpendicular to the mounting plate 12, and the connecting shaft 51 rotates around its own axis and is provided on the mounting plate 12; a plurality of blades 52 are provided, and the blades 52 are arranged on the connecting shaft 51 in a ring, and the blades 52 are located below the mounting plate 12. Therefore, the rotation of the connecting shaft 51 can drive the blades 52 to rotate, thereby blowing air on the heat conducting sheet 4, accelerating the cooling of the heat conducting sheet 4, and enhancing the heat dissipation effect. The drive assembly 6 is used to drive the connecting shaft 51 to rotate.

[0042] The drive assembly 6 includes a rotating rod 61, a first bevel gear set 62, and a power component 63. Two rotating rods 61 are provided, one corresponding to the top terminal 21 of the battery 2. The rotating rods 61 are arranged along the length of the mounting plate 12 and are mounted on the top surface of the mounting plate 12, rotating about their own axes. The number of first bevel gear sets 62 is the same as the number of heat conducting fins 4, and each first bevel gear set 62 corresponds to a heat conducting fin 4. The first bevel gear set 62 includes a first driving bevel gear 621 and a first driven bevel gear 622. The first driving bevel gear 621 is coaxially fixed to the rotating rod 61, and the first driven bevel gear 622 is coaxially fixed to the corresponding connecting shaft 51. The first driving bevel gear 621 and the first driven bevel gear 622 mesh with each other. Therefore, with the cooperation of the first driving bevel gear 621 and the first driven bevel gear 622, rotation of the rotating rod 61 can drive the rotation of multiple connecting shafts 51 in the same row. The power component 63 is used to drive the rotating rod 61.

[0043] The power component 63 includes a rotating power part, a rotating shaft 632 and a second bevel gear set 633. The rotating power part is a motor 631, which is fixedly connected to the outer wall of the shell 1 by bolts, and the motor 631 is located on the top surface of the mounting plate 12, and the output shaft of the motor 631 is arranged along the width direction of the mounting plate 12. The rotating shaft 632 is coaxially fixedly connected to the output shaft of the motor 631. There are two sets of second bevel gear sets 633, corresponding to the two rotating rods 61 respectively. The second bevel gear set 633 includes a second driving bevel gear 6331 and a second driven bevel gear 6332. The second driving bevel gear 6331 is coaxially fixedly connected to the rotating shaft 632, and the second driven bevel gear 6332 is coaxially fixedly connected to the corresponding rotating rod 61, and the second driving bevel gear 6331 and the second driven bevel gear 6332 are meshed. Therefore, under the cooperation of the second driving bevel gear 6331 and the second driven bevel gear 6332 , the motor 631 drives the rotating shaft 632 to rotate, and the rotating shaft 632 can drive the two rotating rods 61 to rotate synchronously.

[0044] An exhaust fan 7 is also fixedly connected to the outer wall of the housing 1. The air inlet of the exhaust fan 7 is located inside the housing 1, and the air outlet of the exhaust fan 7 is located outside the housing 1. Therefore, the exhaust fan 7 can further accelerate the air flow inside the housing 1, extract the hot air inside the housing 1, and accelerate the heat dissipation of the battery 2. An exhaust pipe 8 is fixedly connected to the bottom wall of the mounting plate 12. The exhaust pipe 8 is arranged along the width of the mounting plate 12. There are two exhaust pipes 8, one of which is located at each end of the mounting plate 12. The exhaust pipe 8 is provided with an exhaust port 81, and there are multiple exhaust ports 81, which are evenly spaced along the length of the exhaust pipe 8. The two exhaust pipes 8 are connected by a pipe, and one of the exhaust pipes 8 is connected to the air inlet of the exhaust fan 7. Therefore, the provision of the exhaust pipe 8 increases the suction area of ​​the exhaust fan 7, helps to enhance the exhaust effect of the exhaust fan 7, and thus enhances the heat dissipation of the battery pack.

[0045] The implementation principle of Example 2 is as follows: when the battery pack is working, coolant is introduced into the liquid cooling plate 31 and the liquid cooling block 9 to absorb the heat on the pole 21 of the battery 2; at the same time, the motor 631 drives the rotating shaft 632 to rotate, and the rotating shaft 632 drives the two rotating rods 61 to rotate synchronously through the second bevel gear set 633, and the rotating rod 61 drives the multiple connecting shafts 51 to rotate through the first bevel gear set 62, and the connecting shaft 51 drives the blades 52 to rotate, thereby blowing air on the surface of the heat conducting plate 4 to accelerate the heat dissipation of the heat conducting plate 4; in addition, the exhaust fan 7 draws out the hot air in the shell 1 through the exhaust pipe 8, thereby further accelerating the air flow in the shell 1 and enhancing the heat dissipation of the battery pack.

[0046] The above are optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for dissipating heat in an energy storage battery pack system, the device being arranged on a battery pack, the battery pack comprising a housing (1) and a plurality of batteries (2) arranged in the housing (1), the batteries (2) being provided with poles (21), the poles (21) being provided with conductive sheets, and characterized in that: The invention comprises a liquid-cooled radiator (3) and a heat conducting plate (4), wherein the liquid-cooled radiator (3) comprises a water tank, a pump body, a liquid cooling plate (31) and a heat exchanger connected end to end in sequence, wherein the water tank, the pump body and the heat exchanger are all arranged on the outside of the housing (1), the liquid cooling plate (31) is located on the inside of the housing (1), the heat conducting plate (4) is against the conductive plate, and the liquid cooling plate (31) is connected to the heat conducting plate (4); A blower mechanism is provided on one side of the heat conducting sheet (4), the blower mechanism comprising a fan blade (5) and a drive assembly (6), the fan blade (5) being provided in the housing (1), a plurality of the fan blades (5), the fan blade (5) comprising a connecting shaft (51) rotatably provided on the housing (1) and a plurality of blades (52) arranged around the connecting shaft (51), the drive assembly (6) being used to drive the connecting shaft (51) to rotate.

2. The device for heat dissipation of an energy storage battery system according to claim 1, characterized in that: There are a plurality of heat conducting plates (4), each of which is in contact with the conductive plates on the two poles (21). There are a plurality of corresponding liquid cooling plates (31), each of which corresponds to a heat conducting plate (4). A connecting pipe (311) is connected between two adjacent liquid cooling plates (31), and the connecting pipe (311) is communicated with the interior of the liquid cooling plate (31).

3. The device for heat dissipation of an energy storage battery system according to claim 2, characterized in that: Each of the heat conducting sheets (4) abuts against the conductive sheets on the poles (21) on two adjacent batteries (2).

4. The device for heat dissipation of an energy storage battery system according to claim 1, characterized in that: The driving assembly (6) comprises a rotating rod (61), a first bevel gear set (62) and a power component (63). The rotating rod (61) is rotatably arranged in the housing (1). The rotating rod (61) is provided with a plurality of first bevel gear sets (62) and is spaced and distributed in parallel. The number of the first bevel gear sets (62) is the same as the number of the connecting shafts (51). Each first bevel gear set (62) corresponds to a connecting shaft (51). The first bevel gear set (62) is arranged between the connecting shaft (51) and the rotating rod (61). The power component (63) is used to drive the rotating rod (61) to rotate.

5. The device for heat dissipation of an energy storage battery system according to claim 4, characterized in that: The power component (63) comprises a rotating power member, a rotating shaft (632) and a second bevel gear set (633). The rotating power member is arranged on the housing (1). The rotating shaft (632) is connected to the output end of the rotating power member. The rotating shaft (632) is located in the housing (1). The number of the second bevel gear sets (633) is the same as the number of the rotating rods (61). Each second bevel gear set (633) corresponds to a rotating rod (61). The second bevel gear set (633) is connected between the rotating rod (61) and the rotating shaft (632).

6. The device for heat dissipation of an energy storage battery system according to claim 1, characterized in that: An exhaust fan (7) is provided on the housing (1), an air inlet of the exhaust fan (7) is located inside the housing (1), and an air outlet of the exhaust fan (7) is located outside the housing (1).

7. The device for heat dissipation of an energy storage battery system according to claim 6, characterized in that: An exhaust pipe (8) is connected to the air inlet of the exhaust fan (7), and the exhaust pipe (8) is located in the shell (1). Two exhaust pipes (8) are provided, and are respectively located at two ends of the shell (1).

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