Portable air-cooled heat dissipation energy storage battery

Abstract

The application discloses a portable air-cooled heat dissipation energy storage battery, which comprises a shell, a battery assembly and a heat dissipation assembly; the battery assembly and the heat dissipation assembly are fixed in the shell; the heat dissipation assembly comprises a radiator, a fan, a heat dissipation air duct and a heat transfer part; the heat transfer part uniformly covers the battery assembly; the radiator is fixed in the heat dissipation air duct; the fan is located on both sides of the heat dissipation air duct; the heat transfer part is additionally provided with a temperature sensor; the shell is additionally provided with a controller; the battery assembly, the temperature sensor and the fan are electrically connected with the controller. Through the arrangement of the battery assembly and the heat dissipation assembly, the heat transfer part can balance the temperature of the battery assembly, adjust the temperature difference between the battery cells, balance the temperature and efficiency among the batteries, and prolong the service life of the portable air-cooled heat dissipation energy storage battery; through the arrangement of the shell and the heat dissipation assembly, the temperature sensor can accurately acquire the temperature of the battery assembly, so that the controller can accurately control the fan to dissipate heat, and the heat dissipation performance of the portable air-cooled heat dissipation energy storage battery is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a portable air-cooled energy storage battery. Background Technology

[0002] During high-rate charging and discharging, lithium-ion batteries generate significant Joule heating due to internal resistance polarization. In practical applications, the temperature gradient within the battery module widens, especially when the temperature difference between cells exceeds 5°C, leading to inconsistencies in internal resistance and capacity, which can easily cause performance bottlenecks in the battery pack. At this point, the battery faces the risk of thermal runaway, meaning that a temperature chain reaction within the battery can trigger safety accidents such as electrolyte decomposition and separator melting. In existing energy storage devices, an air layer forms between the battery and the heat dissipation substrate due to assembly gaps, making it difficult to equalize the temperature between battery cells and adjust the temperature difference between cells in a timely manner, thus affecting the heat dissipation performance of the energy storage battery. Summary of the Invention

[0003] This application provides a portable air-cooled energy storage battery that can accurately balance and adjust the temperature of the battery components, thereby improving the heat dissipation performance of the portable air-cooled energy storage battery.

[0004] An embodiment of this application provides a portable air-cooled energy storage battery, comprising: a casing, a battery assembly, and a heat dissipation assembly; the battery assembly and the heat dissipation assembly are both fixed inside the casing, the heat dissipation assembly includes a radiator, a fan, a heat dissipation duct, and a heat transfer part, the heat transfer part uniformly covering the battery assembly; the radiator is fixed inside the heat dissipation duct; the fan is located on both sides of the heat dissipation duct; a temperature sensor is also provided on the heat transfer part; a controller is provided inside the casing, and the battery assembly, the temperature sensor, and the fan are all electrically connected to the controller.

[0005] A portable air-cooled energy storage battery according to an embodiment of this application has at least the following beneficial effects: by setting up a battery assembly and a heat dissipation assembly, the heat transfer part can balance the temperature of the battery assembly, adjust the temperature difference between the cells, balance the temperature and performance of each battery, effectively avoid the bottleneck effect of the battery assembly, and improve the service life of the portable air-cooled energy storage battery; by setting up a shell and a heat dissipation assembly, the temperature sensor can accurately obtain the temperature of the battery assembly, so that the controller can accurately control the fan for heat dissipation, thereby improving the heat dissipation performance of the portable air-cooled energy storage battery.

[0006] In some embodiments, an insulating block is provided between the heat transfer section and the battery assembly, and the temperature sensor is located between the heat transfer section and the insulating block. By providing the insulating block, short circuits in the battery assembly are avoided, thereby improving the heat transfer efficiency between the heat transfer section and the battery assembly.

[0007] In some embodiments, the heat transfer coefficient of the heat transfer element is greater than that of air. This configuration ensures that the heat transfer element can quickly and accurately transmit temperature information to the temperature sensor, reducing heat transfer time and heat transfer loss, and improving the heat dissipation efficiency of portable air-cooled energy storage batteries.

[0008] In some embodiments, the battery assembly includes multiple battery modules, each battery module including multiple batteries, with the batteries within the same battery module connected by copper busbars. By using battery modules and copper busbars, the connection stability between the battery assembly and the controller is ensured, and the temperature among the multiple batteries is balanced via the copper busbars, thereby improving the structural and operational stability of the portable air-cooled energy storage battery.

[0009] In some embodiments, the housing is provided with a display panel, and the battery module is connected to the display panel via the controller. By providing a display panel, the battery module's charge level and the battery assembly's operating status can be displayed intuitively, improving the ease of use of portable air-cooled energy storage batteries.

[0010] In some embodiments, the housing is provided with a power output port and a power input port, both of which are connected to the battery module via the controller. By providing the power output port and power input port, the battery module can easily output power and perform charging operations, improving the ease of use of the portable air-cooled energy storage battery.

[0011] In some embodiments, the housing includes a base, a protective plate, and a cover plate; the battery assembly is fixed inside the base, and the heat dissipation assembly is fixed between the protective plate and the cover plate. By providing a base, a protective plate, and a cover plate, the battery assembly and the heat dissipation assembly can be stably and quickly fixed inside the housing, improving the assembly convenience of portable air-cooled energy storage batteries.

[0012] In some embodiments, a positioning rod is provided within the base, and the battery assembly is fixed within the base by the positioning rod. By providing the positioning rod, the battery assembly is prevented from becoming loose during use and transportation, thus improving the structural stability of the portable air-cooled energy storage battery.

[0013] In some embodiments, the protective plate and the cover plate are provided with heat dissipation holes that cooperate with the fan. By providing heat dissipation holes, the heat generated by the battery assembly can be quickly transferred to the outside of the casing through the heat transfer section and the heat dissipation air duct, thereby improving the heat dissipation performance of the portable air-cooled energy storage battery.

[0014] In some embodiments, the temperature sensor is a negative temperature coefficient thermistor. A negative temperature coefficient thermistor is a sensor resistor whose resistance decreases as temperature increases, enabling accurate acquisition of the temperature of the heat transfer part and improving the operational stability of portable air-cooled energy storage batteries.

[0015] This application discloses a portable air-cooled energy storage battery. By incorporating a battery assembly and a heat dissipation assembly, the heat transfer section can balance the temperature of the battery assembly, adjust the temperature difference between cells, and balance the temperature and performance of each battery, effectively preventing the battery assembly from experiencing a bottleneck effect and improving the service life of the portable air-cooled energy storage battery. By incorporating a casing and a heat dissipation assembly, a temperature sensor can accurately acquire the temperature of the battery assembly, allowing the controller to accurately control the fan for heat dissipation, thus improving the heat dissipation performance of the portable air-cooled energy storage battery. By incorporating an insulating block, short circuits in the battery assembly are prevented, improving the heat transfer efficiency between the heat transfer section and the battery assembly. By incorporating a battery module and copper busbars, the connection stability between the battery assembly and the controller is ensured, improving the structural stability of the portable air-cooled energy storage battery. By incorporating a display panel, the battery module's charge level and the battery assembly's operating status can be displayed intuitively, improving the ease of use of the portable air-cooled energy storage battery.

[0016] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description and the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a portable air-cooled heat dissipation energy storage battery provided in one embodiment of this application; Figure 2 This is an exploded view of the structure of a portable air-cooled heat dissipation energy storage battery provided in one embodiment of this application; Figure 3 A cross-sectional view of a portable air-cooled heat dissipation energy storage battery provided in one embodiment of this application; Figure 4 A cross-sectional view of a portable air-cooled energy storage battery provided in another embodiment of this application. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] Reference Figures 1 to 4 This utility model provides a portable air-cooled energy storage battery, including: a shell 100, a battery assembly 200, and a heat dissipation assembly 300; the battery assembly 200 and the heat dissipation assembly 300 are both fixed inside the shell 100. The heat dissipation assembly 300 includes a heat sink 310, a fan 320, a heat dissipation duct 330, and a heat transfer part 340, which uniformly covers the battery assembly 200; the heat sink 310 is fixed inside the heat dissipation duct 330; the fan 320 is located on both sides of the heat dissipation duct 330; a temperature sensor 350 is also provided on the heat transfer part 340; a controller 110 is provided inside the shell 100, and the battery assembly 200, the temperature sensor 350, and the fan 320 are all electrically connected to the controller 110.

[0020] By setting up the battery assembly 200 and the heat dissipation assembly 300, the heat transfer part 340 can balance the temperature of the battery assembly 200, adjust the temperature difference between the cells, balance the temperature and performance of each battery, effectively avoid the bottleneck effect of the battery assembly 200, and improve the service life of the portable air-cooled energy storage battery; by setting up the casing 100 and the heat dissipation assembly 300, the temperature sensor 350 can accurately obtain the temperature of the battery assembly 200, so that the controller 110 can accurately control the fan 320 for heat dissipation, thereby improving the heat dissipation performance of the portable air-cooled energy storage battery.

[0021] In some embodiments, an insulating block 360 is provided between the heat transfer section 340 and the battery assembly 200, and a temperature sensor 350 is located between the heat transfer section 340 and the insulating block 360. By providing the insulating block 360, short circuits in the battery assembly 200 are avoided, and the heat transfer efficiency between the heat transfer section 340 and the battery assembly 200 is improved.

[0022] In some embodiments, by providing a heat transfer section 340 and an insulating block 360, the heat transfer section 340 can uniformly and completely cover the battery assembly 200, providing physical buffer for the battery assembly 200, reducing the risk of the battery assembly 200 being punctured, and improving the safety of the portable air-cooled energy storage battery.

[0023] In some embodiments, the heat transfer coefficient of the heat transfer unit 340 is greater than that of air. This configuration ensures that the heat transfer unit 340 can quickly and accurately transmit temperature information to the temperature sensor 350, reducing heat transfer time and heat transfer loss, and improving the heat dissipation efficiency of the portable air-cooled energy storage battery.

[0024] In some embodiments, the battery assembly 200 includes a plurality of battery modules 210, and each battery module 210 includes a plurality of batteries 211. The batteries 211 of the same battery module 210 are connected by a copper busbar 220. By setting up the battery modules 210 and the copper busbar 220, the connection stability between the battery assembly 200 and the controller 110 is ensured, and the temperature among the multiple batteries 211 is also balanced through the copper busbar 220, thereby improving the structural and operational stability of the portable air-cooled energy storage battery.

[0025] In some embodiments, the housing 100 is provided with a display panel 120, and the battery module 210 is connected to the display panel 120 via a controller 110. By providing the display panel 120, the power level of the battery module 210 and the operating status of the battery assembly 200 can be displayed intuitively, improving the ease of use of the portable air-cooled energy storage battery.

[0026] In some embodiments, the housing 100 is provided with a power output port 130 and a power input port 140, both of which are connected to the battery module 210 via the controller 110. By providing the power output port 130 and the power input port 140, the battery module 210 can easily output power and perform charging operations, improving the ease of use of the portable air-cooled energy storage battery.

[0027] In some embodiments, the housing 100 includes a base 150, a protective plate 160, and a cover plate 170; the battery assembly 200 is fixed within the base 150, and the heat dissipation assembly 300 is fixed between the protective plate 160 and the cover plate 170. By providing the base 150, the protective plate 160, and the cover plate 170, the battery assembly 200 and the heat dissipation assembly 300 can be stably and quickly fixed within the housing 100, improving the assembly convenience of the portable air-cooled energy storage battery.

[0028] In some embodiments, a positioning rod 151 is provided inside the base 150, and the battery assembly 200 is fixed inside the base 150 by the positioning rod 151. By providing the positioning rod 151, the battery assembly 200 is prevented from becoming loose during use and transportation, thereby improving the structural stability of the portable air-cooled energy storage battery.

[0029] In some embodiments, the protective plate 160 and the cover plate 170 are provided with heat dissipation holes 161 that cooperate with the fan 320. By providing heat dissipation holes 161, the heat generated by the battery assembly 200 can be quickly transferred to the outside of the housing 100 through the heat transfer section 340 and the heat dissipation duct 330, thereby improving the heat dissipation performance of the portable air-cooled energy storage battery.

[0030] In some embodiments, the temperature sensor 350 is a negative temperature coefficient thermistor. A negative temperature coefficient (NTC) thermistor is a sensor resistor whose resistance decreases as temperature increases; that is, NTC materials have the characteristic that their resistance decreases with increasing temperature. Therefore, NTC materials are commonly used in temperature monitoring devices or medical sensors to help achieve accurate temperature measurement, enabling the temperature sensor 350 to accurately obtain the temperature of the heat transfer section 340 and improve the operational stability of portable air-cooled energy storage batteries.

[0031] The working principle of this utility model will be further explained below.

[0032] During assembly, firstly, based on the capacity requirements of the battery assembly 200, a housing 100 of the corresponding size and a heat dissipation component 300 are selected, along with batteries 211 of the corresponding specifications. Next, multiple batteries 211 are connected via copper busbars 220 to form battery modules 210, and these modules are then combined to form the battery assembly 200. Then, an insulating block 360 is installed to prevent short circuits in the battery assembly 200. Finally, a temperature sensor 350 is installed on the insulating block 360, and a heat transfer section 340 is evenly distributed over the battery assembly 200. Then, the positioning rod 151 is inserted into the battery assembly 200 to fix the battery assembly 200 in the base 150. Next, the protective plate 160 is installed on the base 150, and the controller 110, heat sink 310, and fan 320 are installed in sequence, forming a heat dissipation airflow 330 between the heat sink 310 and the fan 320. At the same time, the display panel 120, power output port 130, and power input port 140 are installed on the outer casing 100. Finally, the cover plate 170 is installed on the protective plate 160 so that the heat dissipation hole 161 is aligned with the fan 320. The entire process is efficient and controllable, and the positioning of each component is precise, which improves the production efficiency of portable air-cooled energy storage batteries.

[0033] During use, the heat transfer sections 340 evenly distributed on the battery assembly 200 enable heat transfer between multiple batteries 211, effectively balancing the temperature between battery modules 210. Simultaneously, it adjusts the temperature difference between batteries 211, balancing the temperature and performance of each battery 211 and mitigating the bottleneck effect of any single battery. Since the heat transfer coefficient of the heat transfer section 340 is greater than that of air, it accelerates heat dissipation from the battery assembly 200, preventing thermal runaway. The heat from the heat transfer section 340 is then quickly transferred to the heat sink 310. With the help of the fan 320, the heat is transferred to the outside of the casing 100 through the cooling duct 330 and the cooling holes 161, achieving rapid cooling. The controller 110 accurately obtains the temperature of the battery assembly 200 through the temperature sensor 350, thereby controlling the opening of the fan 320 to achieve precise temperature control of the battery assembly 200. When thermal runaway occurs in the battery assembly 200, the heat transfer unit 340 can transmit temperature information to the temperature sensor 350 more quickly and accurately, reducing the time and loss of heat transfer. The controller 110 can then respond to thermal management more quickly and accurately, disconnecting the battery assembly 200 from the power output port 130 and the power input port 140, and increasing the speed of the fan 320. In some embodiments, when the temperature sensor 350 detects that the temperature of the battery assembly 200 has risen to a preset value, it determines that the battery assembly 200 has runaway. The controller 110 then disconnects the battery assembly 200 from the power output port 130 and the power input port 140, thus achieving automatic power-off protection.

[0034] In existing energy storage batteries, an air layer is formed between the battery 211 and the heat sink 310 due to the assembly gap. Since the thermal conductivity of air is 0.026 W / m·K, it accounts for more than 60% of the total thermal resistance of the energy storage device, which greatly affects the response speed of the controller 110. However, the portable air-cooled energy storage battery provided in this application embodiment effectively improves the heat dissipation performance of the portable air-cooled energy storage battery by uniformly distributing the heat transfer part 340 on the battery assembly 200 and setting the temperature sensor 350 on the heat transfer part 340, thus ensuring the service life of the battery assembly 200.

[0035] This application provides a portable air-cooled energy storage battery. By setting up a battery assembly 200 and a heat dissipation assembly 300, the heat transfer part 340 can balance the temperature of the battery assembly 200, adjust the temperature difference between the cells, and balance the temperature and performance of each battery, effectively avoiding the bottleneck effect of the battery assembly 200 and improving the service life of the portable air-cooled energy storage battery. By setting up a shell 100 and a heat dissipation assembly 300, the temperature sensor 350 can accurately obtain the temperature of the battery assembly 200, so that the controller 110 can accurately control the fan 320 for heat dissipation, improving the heat dissipation performance of the portable air-cooled energy storage battery. An insulating block 360 is placed to ensure that the heat transfer part 340 can evenly and completely cover the battery assembly 200, providing physical cushioning for the battery assembly 200, reducing the risk of the battery assembly 200 being punctured, and improving the safety of the portable air-cooled energy storage battery; by setting the battery module 210 and copper busbar 220, the connection stability between the battery assembly 200 and the controller 110 is ensured, improving the structural stability of the portable air-cooled energy storage battery; by setting the display panel 120, the power level of the battery module 210 and the working status of the battery assembly 200 are displayed intuitively, improving the ease of use of the portable air-cooled energy storage battery.

[0036] In the several embodiments provided in this application, it should be understood that the disclosed systems, instruments, and methods can be implemented in other ways. For example, the instrument embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between instruments or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0037] The above is a detailed description of the preferred embodiments of this application. However, this application is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A portable air-cooled energy storage battery, characterized in that, include: The device comprises a housing, a battery assembly, and a heat dissipation assembly. Both the battery assembly and the heat dissipation assembly are fixed within the housing. The heat dissipation assembly includes a radiator, a fan, a heat dissipation duct, and a heat transfer section, with the heat transfer section evenly covering the battery assembly. The radiator is fixed within the heat dissipation duct. The fan is located on both sides of the heat dissipation duct. A temperature sensor is also provided on the heat transfer section. A controller is located within the housing, and the battery assembly, the temperature sensor, and the fan are all electrically connected to the controller.

2. The portable air-cooled heat dissipation energy storage battery according to claim 1, characterized in that: An insulating block is provided between the heat transfer section and the battery assembly, and the temperature sensor is located between the heat transfer section and the insulating block.

3. A portable air-cooled energy storage battery according to claim 2, characterized in that: The heat transfer coefficient of the heat transfer section is greater than that of air.

4. A portable air-cooled heat dissipation energy storage battery according to claim 1, characterized in that: The battery assembly includes multiple battery modules, and each battery module includes multiple batteries. The batteries in the same battery module are connected by copper busbars.

5. A portable air-cooled energy storage battery according to claim 4, characterized in that: The outer casing is equipped with a display panel, and the battery module is connected to the display panel through the controller.

6. A portable air-cooled energy storage battery according to claim 5, characterized in that: The housing is provided with a power output port and a power input port, both of which are connected to the battery module through the controller.

7. A portable air-cooled heat dissipation energy storage battery according to claim 1, characterized in that: The housing includes a base, a protective plate, and a cover plate; the battery assembly is fixed inside the base, and the heat dissipation assembly is fixed between the protective plate and the cover plate.

8. A portable air-cooled energy storage battery according to claim 7, characterized in that: The base is equipped with a positioning rod, and the battery assembly is fixed in the base by the positioning rod.

9. A portable air-cooled energy storage battery according to claim 7, characterized in that: The protective plate and the cover plate are provided with heat dissipation holes that cooperate with the fan.

10. A portable air-cooled energy storage battery according to claim 1, characterized in that: The temperature sensor is a negative temperature coefficient thermistor.

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