Battery thermal equalization system, battery and energy storage device

Abstract

The utility model relates to the technical field of batteries, in particular to a battery heat balancing system, a battery and an energy storage device.The battery heat balancing system comprises a heat transmission pipe network and a flow adjusting assembly, and the heat transmission pipe network is arranged in a battery shell and provided with heat exchange branches in one-to-one correspondence with battery cells; the heat transfer pipe network enables a heat exchange medium to flow in the heat exchange branches, so that the heat exchange medium flowing through the heat exchange branches exchanges heat with the corresponding battery cells; the flow adjusting assembly is arranged on the heat exchange branch and used for adjusting the flow of the heat exchange medium flowing through the heat exchange branch. When the heat exchange medium flows in the heat transmission pipe network, the heat exchange medium flowing through each heat exchange branch exchanges heat with the corresponding battery cell, and the flow of the heat exchange medium flowing through each heat exchange branch is independently and adaptively adjusted through the flow adjusting assembly, so that the battery cells at different temperatures are adaptively adjusted, and the battery cells at different temperatures can be adjusted in a self-adaptive manner. And the heat of each battery cell in the battery reaches a balanced state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery thermal equalization system, a battery and an energy storage device. BACKGROUND

[0002] The current market requires new energy vehicles to have higher endurance and cycle life, which leads to larger capacity of vehicle-mounted power batteries, and the heat generated by the batteries also increases. If the heat is only dissipated by increasing the flow of heat exchange medium, the heat will be unevenly distributed among the battery cells inside the vehicle-mounted power battery, which will have a series of negative effects, mainly in the following aspects:

[0003] 1. Performance degradation: working at high temperature will accelerate the aging of the battery, and the positive and negative materials and electrolyte of the battery may change structure or decompose, leading to capacity degradation and affecting the endurance mileage. When the heat is unevenly distributed, some battery cells may overheat, accelerating the process;

[0004] 2. Safety risk: excessive heating may cause battery thermal runaway, including internal short circuit, electrolyte decomposition and even fire and explosion, threatening the safety of the vehicle and passengers;

[0005] 3. Reduced charging efficiency: high battery temperature will affect the charging speed and efficiency, and uneven heat distribution may also cause the battery management system to limit charging to prevent local overheating;

[0006] 4. Temperature cycle stress: frequent temperature fluctuations will increase the physical stress on the battery structure, which may damage the battery seal over time and cause liquid leakage or internal short circuit;

[0007] 5. Consistency problem: temperature differences among battery cells in the battery pack will lead to inconsistent electrochemical performance, affecting the output power and service life of the entire battery pack.

[0008] Therefore, effective thermal management is crucial to ensure the safety, performance and life of electric vehicle batteries. CONTENT OF THE INVENTION

[0009] The present application provides a battery thermal equalization system, a battery and an energy storage device to solve the problem of uneven heat distribution among battery cells in the prior art.

[0010] In one aspect, the present application provides a battery thermal equalization system, comprising:

[0011] A heat transfer pipe network is arranged in the battery housing, and the heat transfer pipe network has a heat exchange branch corresponding to each battery cell. The heat transfer pipe network allows the heat exchange medium flowing in the heat exchange branch to exchange heat with the corresponding battery cell.

[0012] The flow regulating assembly is arranged on the heat exchange branch and is used for regulating the flow of the heat exchange medium flowing through the heat exchange branch.

[0013] In a possible design, the heat transfer pipe network comprises a buffer chamber, a first buffer cavity and a second buffer cavity are formed in the buffer chamber, an inlet and a flow guide opening are arranged on a cavity wall of the first buffer cavity and communicate with the first buffer cavity, and a backflow opening and an outlet are arranged on a cavity wall of the second buffer cavity and communicate with the second buffer cavity.

[0014] The two ends of each heat exchange branch are in communication with the flow guide opening and the backflow opening, respectively.

[0015] In a possible design, the heat transfer pipe network further comprises:

[0016] A first pipe has an input end in communication with the flow guide opening, and the first pipe has a plurality of output ends, and the input ends of the heat exchange branches are in one-to-one correspondence with the output ends of the first pipe.

[0017] A second pipe has a plurality of input ends, the input ends of the second pipe are in one-to-one correspondence with the output ends of the heat exchange branches, and an output end of the second pipe is in communication with the backflow opening.

[0018] In a possible design, a moving assembly is arranged in the buffer chamber, the moving assembly comprises a partition plate, the partition plate divides the buffer chamber into the first buffer cavity and the second buffer cavity, an edge of the partition plate is in gap fit with an inner wall of the buffer chamber, and the partition plate is capable of moving along the inner wall of the buffer chamber under the pressure action of the first buffer cavity and the second buffer cavity.

[0019] In a possible design, the moving assembly further comprises:

[0020] A first limiting block is arranged on an inner wall of the first buffer cavity.

[0021] A second limiting block is arranged on an inner wall of the second buffer cavity, and the partition plate is arranged between the first limiting block and the second limiting block.

[0022] A first buffer spring is arranged between the first limiting block and the partition plate.

[0023] A second buffer spring is arranged between the second limiting block and the partition plate, and the first buffer spring and the second buffer spring enable the partition plate to move between the first limiting block and the second limiting block through extension and contraction.

[0024] In a possible design, a first mounting groove is arranged on the first limiting block, a first clamping groove is arranged on the partition plate and is arranged opposite to the first mounting groove, and two ends of the first buffer spring are in abutment with inner walls of the first mounting groove and the first clamping groove, respectively.

[0025] The second limiting block is provided with a second installation slot, the partition plate is provided with a second clamping slot opposite to the second installation slot, and the two ends of the second buffer spring are respectively in abutment with the inner walls of the second installation slot and the second clamping slot.

[0026] In a possible design, the partition plate is provided with a sealing groove on the side close to the inner wall of the buffer chamber, and a sealing ring is arranged in the sealing groove.

[0027] In a possible design, the flow regulating assembly comprises a temperature sensor, a processor and a flow regulating valve.

[0028] In addition, the first pipeline and the second pipeline are respectively provided with a check valve.

[0029] In another aspect, the application further provides a battery comprising the battery thermal equalization system.

[0030] In still another aspect, the application further provides an energy storage device comprising the battery.

[0031] The application has the following beneficial effects:

[0032] The battery thermal equalization system of the application comprises a heat transfer pipe network and a flow regulating assembly, the heat transfer pipe network is provided with a heat exchange branch corresponding to each battery cell, when the heat exchange medium flows in the heat transfer pipe network, the heat exchange medium flowing through each heat exchange branch exchanges heat with the corresponding battery cell, the flow of the heat exchange medium flowing through each heat exchange branch is individually and adaptively regulated by the flow regulating assembly, so that the battery cells at different temperatures can be adaptively regulated, which is beneficial to make the heat of each battery cell in the battery reach an equalization state, reduce the risk of single-point or multi-point failure of the battery cells caused by heat accumulation, and improve the thermal management efficiency of the power battery.

[0033] The battery provided by the application comprises the battery thermal equalization system of the application, and therefore has all the advantages of the battery thermal equalization system.

[0034] The energy storage device provided by the application comprises the battery of the application, and therefore has all the advantages of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1A structural schematic diagram of a battery thermal equalization system provided by an embodiment of the present application;

[0037] Figure 2 Another structural schematic diagram of a battery thermal equalization system provided by an embodiment of the present application;

[0038] Figure 3 A schematic diagram of a determination principle of a cell target temperature of a battery thermal equalization system provided by an embodiment of the present application;

[0039] Figure 4 A schematic diagram of a control principle of a flow regulating valve of a battery thermal equalization system provided by an embodiment of the present application.

[0040] Reference signs:

[0041] 100, buffer chamber; 110, first buffer cavity; 111, inlet; 112, flow guide opening; 120, second buffer cavity; 121, backflow opening; 122, outlet; 200, heat exchange branch; 310, first pipeline; 320, second pipeline; 410, partition plate; 411, first clamping groove; 412, second clamping groove; 413, sealing groove; 420, first limiting block; 421, first mounting groove; 430, second limiting block; 431, second mounting groove; 440, first buffer spring; 450, second buffer spring; 510, processor; 520, flow regulating valve; 600, check valve; 700, battery shell. DETAILED DESCRIPTION

[0042] The technical solutions of the present application will be described clearly and completely below in conjunction with embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] The battery thermal equalization system provided by an embodiment of the present application will be described below in conjunction with Figures 1-4

[0044] Reference will be made to Figure 1 ​As shown, in the embodiments provided in the present application, the battery thermal balancing system includes a heat transfer pipe network and a flow regulating assembly. The heat transfer pipe network is arranged in the battery housing 700 and has heat exchange branches 200 arranged one-to-one corresponding to the battery cells. The heat transfer pipe network causes the heat exchange medium flowing through the heat exchange branches 200 to exchange heat between the heat exchange medium and the corresponding battery cells. The flow regulating assembly is arranged on the heat exchange branches 200 and is used to regulate the flow of the heat exchange medium flowing through the heat exchange branches 200. The heat exchange medium can be water or other heat exchange medium. In some embodiments, the flow regulating assembly includes a temperature sensor, a processor 510 and a flow regulating valve 520. The processor 510 is integrated into the battery management system inside the battery pack. The output end of the temperature sensor is electrically connected to the input end of the processor 510, and the output end of the processor 510 is electrically connected to the flow regulating valve 520. Specifically, the temperature sensor is a plurality of temperature sensors, and the plurality of temperature sensors are respectively used to collect the temperature of each battery cell in the battery pack. After the processor 510 obtains the temperature of each battery cell through the plurality of temperature sensors, the processor 510 further determines the battery cell target temperature corresponding to the battery cell. According to the battery cell target temperature, the processor 510 issues an instruction to the flow regulating valve 520 to adjust the opening size of the flow regulating valve 520, so as to realize the flow regulation of the flow regulating valve 520 on different heat exchange branches 200. Specifically, when the battery cell target temperature and the real-time temperature of the battery cell are greatly different, the flow regulating valve 520 is adjusted to make the flow of the heat exchange medium flowing through the valve body larger. When the battery cell target temperature and the real-time temperature of the battery cell are smaller, the flow regulating valve 520 is adjusted to make the flow of the heat exchange medium flowing through the valve body smaller. In this way, by adjusting the flow of the heat exchange medium in the corresponding heat exchange branch 200, the efficiency of heat exchange between the heat exchange medium and the battery cell is controlled, so that each battery cell can reach the battery cell target temperature.

[0045] Referring to Figure 3 As shown, in some embodiments, the determination process of the battery cell target temperature is as follows: the temperature of each battery cell is collected by a temperature sensor arranged inside the battery cell and combined into a multi-dimensional variable [T1 T2...Tn]. In the variable, T1 represents the real-time temperature of the first battery cell, T2 represents the real-time temperature of the second battery cell, and so on.

[0046] Since temperature is a gradual change process, in order to reduce the subsequent calculation deviation caused by abnormal values in the signal transmission process, the collected battery cell temperature needs to be subjected to eight-step sliding filter processing. Taking the temperature of the first battery cell as an example, the formula is as follows:

[0047] T1 = (T1 -1 + T1 -2 + T1 -3 + T1 -4 + T1 -5 + T1 -6 + T1-7

[0048] +T1 -8 )÷8

[0049] In the formula:

[0050] T1 is the filtered current time battery temperature value;

[0051] T1 -1 is the current step collected battery temperature value;

[0052] T1 -2 is the previous step collected battery temperature value; ...

[0054] T1 -8 : the previous seven steps collected battery temperature value;

[0055] By analogy, the temperature of each battery cell of the second battery cell, the third battery cell, etc. is determined by eight-step sliding filter processing to determine the temperature of each battery cell;

[0056] According to the filtered temperature of each battery cell, the current maximum battery temperature Tmax, the current minimum battery temperature Tmin, and the current average battery temperature Tavg can be calculated;

[0057] The power battery usually has two working conditions, namely high temperature cooling and low temperature heating, as follows:

[0058] High temperature cooling: when the current average battery temperature Tavg is greater than γ, it is considered that the battery needs to be cooled. Next, if the current maximum battery temperature Tmax - the current average battery temperature Tavg is greater than α℃, it is considered that Tmax at the current time is an outlier temperature, and the battery cooling target temperature Ttag = Tavg; otherwise, if the current maximum battery temperature Tmax - the current average battery temperature Tavg is not greater than α℃, the battery cooling target temperature Ttag = Tavg*0.9 + Tmax*0.1.

[0059] Low temperature heating: when the current average battery temperature Tavg is less than or equal to γ, it is considered that the battery needs to be heated. Next, if the current average battery temperature Tavg - the current minimum battery temperature Tmin is greater than β℃, it is considered that Tmin at the current time is an outlier temperature, and the battery cooling target temperature Ttag = Tavg; otherwise, if the current average battery temperature Tavg - the current minimum battery temperature Tmin is not greater than β℃, the battery heating target temperature Ttag = Tavg*0.9 + Tmin*0.1.

[0060] Referring to Figure 4As shown, the flow control valve is driven by PWM, and the flow control valve mainly adopts the method of PID control. The input signal is the cell target temperature Ttag calculated in the previous step and the filtered multi-dimensional cell temperature signal [T1T2...Tn]. The PID controller (proportional-integral-derivative controller) is a common feedback loop component in industrial control applications, which is composed of a proportional unit P, an integral unit I and a differential unit D. Through the method of PID control and control slope limitation, the opening of each flow control valve is dynamically adjusted in real time, so as to dynamically adjust the flow of the heat exchange medium flowing through each cell.

[0061] In some embodiments, the heat exchange branch 200 can also be replaced by a corrosion-resistant biological vessel bionic material. The bionic material can adaptively contract and expand with temperature changes, so that the flow control valve and its control circuit do not need to be set to control the flow of the heat exchange medium in the heat exchange branch 200 corresponding to the cell of different temperatures.

[0062] By using the technical solutions of the above-mentioned embodiments of the present application, the heat transfer pipe network is provided with a heat exchange branch 200 corresponding to each cell. When the heat exchange medium flows in the heat transfer pipe network, the heat exchange medium flowing through each heat exchange branch 200 exchanges heat with the corresponding cell, and the flow of the heat exchange medium flowing through each heat exchange branch 200 is individually adjusted by the flow adjusting assembly, so that the cells of different temperatures can be adaptively adjusted. This is beneficial to balance the heat of each cell in the battery, reduce the risk of single-point or multi-point failure of the cell caused by heat accumulation, and improve the thermal management efficiency of the power battery.

[0063] Referring to Figure 1 As shown, in some embodiments provided by the present application, the heat transfer pipe network includes a buffer chamber 100, and a first buffer cavity 110 and a second buffer cavity 120 are formed in the buffer chamber 100. An inlet 111 and a flow guide port 112 are formed in the cavity wall of the first buffer cavity 110 and are in communication with the first buffer cavity 110. A backflow port 121 and an outlet 122 are formed in the cavity wall of the second buffer cavity 120 and are in communication with the second buffer cavity 120. One end of each heat exchange branch 200 is in communication with the flow guide port 112, and the other end of each heat exchange branch 200 is in communication with the backflow port 121. When the flow of the heat exchange medium suddenly increases or decreases, the pressure of the heat exchange medium will also suddenly change during circulation. By providing the buffer chamber 100, the mechanical stress damage to the internal cooling flow channels of the power battery caused by the fluid impact of the sudden change of the pressure of the heat exchange medium during circulation can be prevented due to the large capacity of the buffer chamber 100.

[0064] Referring to Figure 1As shown, in some embodiments provided in the present application, the heat transfer pipe network further comprises a first pipe 310 and a second pipe 320, the input end of the first pipe 310 is in communication with the flow guide 112, the first pipe 310 has a plurality of output ends, the input end of the heat exchange branch 200 is in one-to-one correspondence with the output end of the first pipe 310; the second pipe 320 has a plurality of input ends, the input end of the second pipe 320 is in one-to-one correspondence with the output end of the heat exchange branch 200, and the output end of the second pipe 320 is in communication with the backflow port 121. In this way, the buffer chamber 100-the first pipe 310-the heat exchange medium-the second pipe 320-the buffer chamber 100 form a three-stage heat exchange structure from large to small, which can increase the heat exchange area and accelerate the heat transfer. At the same time, by setting the first pipe 310 and the second pipe 320, the pipe design in the battery shell 700 can be optimized.

[0065] With reference to Figure 1 As shown, in some embodiments provided in the present application, a moving assembly is arranged in the buffer chamber 100, the moving assembly comprises a partition plate 410, the partition plate 410 divides the buffer chamber 100 into a first buffer cavity 110 and a second buffer cavity 120, the edge of the partition plate 410 is in clearance fit with the inner wall of the buffer chamber 100, and the partition plate 410 can move along the inner wall of the buffer chamber 100 under the pressure action of the first buffer cavity 110 and the second buffer cavity 120 to actively adjust the pressure of the first buffer cavity 110 and the second buffer cavity 120. The first buffer cavity 110 and the second buffer cavity 120 can be isolated from each other by the partition plate 410, so that the low-temperature heat exchange medium and the high-temperature heat exchange medium cannot flow between the first buffer cavity 110 and the second buffer cavity 120; the partition plate 410 can move along the inner wall of the buffer chamber 100 under the pressure action of the first buffer cavity 110 and the second buffer cavity 120, so that the capacity of the first buffer cavity 110 and the second buffer cavity 120 is variable, which can further balance the pressure difference between the first buffer cavity 110 and the second buffer cavity 120 when the pressure change rate is large, and prevent the mechanical stress damage to the internal cooling flow channels of the power battery caused by the fluid impact of the sudden pressure change of the heat exchange medium in the circulation process.

[0066] With reference to Figure 2As shown, in some embodiments provided in the present application, the moving assembly further comprises a first limiting block 420, a second limiting block 430, a first buffer spring 440 and a second buffer spring 450, the first limiting block 420 is arranged on the inner wall of the first buffer cavity 110; the second limiting block 430 is arranged on the inner wall of the second buffer cavity 120, the partition plate 410 is arranged between the first limiting block 420 and the second limiting block 430; the first buffer spring 440 is arranged between the first limiting block 420 and the partition plate 410; the second buffer spring 450 is arranged between the second limiting block 430 and the partition plate 410, the first buffer spring 440 and the second buffer spring 450 make the partition plate 410 move between the first limiting block 420 and the second limiting block 430 through stretching and contracting. In this way, the distance of the upward and downward sliding of the partition plate 410 can be limited, and the displacement of the partition plate 410 being too large to cause out-of-control or directly connecting the first buffer cavity 110 and the second buffer cavity 120 can be prevented. Specifically, when the pressure in the first buffer cavity 110 suddenly drops or the pressure in the second buffer cavity 120 suddenly increases, the partition plate 410 will displace upward to compress the first buffer spring 440, and the first limiting block 420 can provide a reaction force for the first buffer spring 440 while limiting the distance of the upward sliding of the partition plate 410, so as to prevent the displacement of the partition plate 410 being too large to cause out-of-control or directly connecting the first buffer cavity 110 and the second buffer cavity 120.

[0067] wherein the relative positions of the first limiting block 420, the second limiting block 430 and the partition plate 410 can be designed according to the stretching (compression) length of the first buffer spring 440 and the second buffer spring 450 calculated, and the specific method is as follows:

[0068] The first buffer spring 440 and the second buffer spring 450 adopt the same type of spring, and the stretching and contracting amount thereof and the heat exchange medium have the following relationship:

[0069] Supposing that the flow rate of the heat exchange medium at the inlet 111 and the outlet 122 is Q1, the flow rate of the heat exchange medium at the inlet 111 is:

[0070]

[0071] wherein,

[0072] V1 is the flow rate of the heat exchange medium at the inlet 111, and the unit is m / s;

[0073] Q1 is the flow rate of the heat exchange medium at the inlet 111, and the unit is m / s; 3

[0074] S1 is the cross-sectional area of the inlet 111, and the unit is m 2 ;

[0075] The upper surface of the partition plate 410 is subjected to force according to Bernoulli equation: ​

[0076]

[0077]

[0078]

[0079] wherein,

[0080] PO is the pressure on the upper surface of the baffle 410, in Pa;

[0081] p is the density of the battery heat exchange medium, in kg / m 3 ;

[0082] g is the acceleration of gravity, in m / s 2 ;

[0083] R O is the radius of the upper surface of the baffle 410, in m;

[0084] P1 is the pressure at the inlet 111 (measurable), in Pa;

[0085] R1 is the cross-sectional radius of the inlet 111, in m;

[0086] F O is the force on the upper surface of the baffle 410, in N;

[0087] S O : the cross-sectional area of the upper surface of the baffle 410, in m 2 ;

[0088] The force on the lower surface of the baffle 410 is:

[0089] F D = P D × S D = P2 x πR D 2

[0090] wherein,

[0091] F D is the force on the lower surface of the baffle 410, in N;

[0092] P D is the pressure on the lower surface of the baffle 410, in Pa;

[0093] P2 is the pressure at the outlet 122 (measurable), in Pa;

[0094] R D is the radius of the lower surface of the baffle 410, in m;

[0095] The stretching (compression) lengths of the first buffer spring 440 and the second buffer spring 450 are as follows, according to Hooke's Law:

[0096] x1=(F O -F D )÷2k

[0097]

[0098] In the formula,

[0099] x represents the stretching (compression) length of the first buffer spring 440 and the second buffer spring 450, in meters (m).

[0100] k is the elastic coefficient of the first buffer spring 440 and the second buffer spring 450, in N / m;

[0101] Therefore, the relative positions of the first limiting block 420, the second limiting block 430 and the partition 410 can be designed based on the calculated stretching (compression) lengths of the first buffer spring 440 and the second buffer spring 450.

[0102] Reference Figure 2 As shown, in some embodiments provided in this application, a first mounting groove 421 is provided on the first limiting block 420, and a first slot 411 is provided on the partition plate 410 opposite to the first mounting groove 421. The two ends of the first buffer spring 440 abut against the inner walls of the first mounting groove 421 and the first slot 411, respectively. A second mounting groove 431 is provided on the second limiting block 430, and a second slot 412 is provided on the partition plate 410 opposite to the second mounting groove 431. The two ends of the second buffer spring 450 abut against the inner walls of the second mounting groove 431 and the second slot 412, respectively. Specifically, the upper end of the first buffer spring 440 abuts against the bottom wall of the first mounting groove 421, and the lower end of the first buffer spring 440 abuts against the bottom wall of the first locking groove 411; the lower end of the second buffer spring 450 abuts against the bottom wall of the second mounting groove 431, and the upper end of the second buffer spring 450 abuts against the bottom wall of the second locking groove 412; this facilitates installation and also limits the movement of the first buffer spring 440 and the second buffer spring 450.

[0103] Reference Figure 2 As shown, in some embodiments provided in this application, a sealing groove 413 is provided on the outer side wall of the partition 410, and a sealing ring is provided in the sealing groove 413. By providing the sealing ring, the first buffer chamber 110 and the second buffer chamber 120 can be further isolated.

[0104] Reference Figure 1As shown, in some embodiments provided in the present application, the first pipeline 310 and the second pipeline 320 are respectively provided with check valves 600, wherein the check valve 600 on the first pipeline 310 functions to enable the heat exchange medium participating in heat exchange to flow in one direction with the external heat exchange medium; and the check valve 600 on the second pipeline 320 functions to prevent the heat exchange medium in the second buffer cavity 120 from flowing back to the inside of the power battery, thereby preventing heat from being transmitted back.

[0105] The present application also provides a battery including the battery thermal balancing system in the above embodiments.

[0106] The present application also provides an energy storage device including the battery in the above embodiments. Specifically, the energy storage device can be a vehicle, a working machine, etc.

[0107] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0108] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0109] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0110] In this application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terms "first", "second", "third", etc. are used herein to describe various embodiments or examples and are not necessarily intended to denote a particular order, position, or priority of the elements being described. In addition, the terms "comprises", "comprising", "includes", "including", "has", "having", "contains", "containing", or any other similar word(s), are intended to be inclusive or open ended and not restrictive or exhaustive. In other words, the terms "comprises", "comprising", "includes", "including", "has", "having", "contains", "containing", or any other similar word(s), are intended to cover a special embodiment or example, but not exclude other embodiments or examples. In addition, the terms "an" and "one" are intended to be inclusive or open ended and not restrictive or exhaustive. In other words, the terms "an" and "one" are intended to cover both the singular aspect and the plural aspect, unless the context clearly indicates otherwise.

[0111] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present application, and that the ordinary skilled person in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present application.

Claims

1. A battery thermal equalization system, comprising: The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system.

2. The battery thermal equalization system of claim 1, wherein: The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system.

3. The battery thermal equalization system of claim 2, wherein, The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system.

4. The battery thermal equalization system of claim 3, wherein: The application relates to a battery thermal equalization system.

5. The battery thermal equalization system of claim 4, wherein, The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system.

6. The battery thermal equalization system of claim 5, wherein: The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system.

7. The battery thermal equalization system of claim 4, wherein: The application relates to a battery thermal equalization system.

8. The battery thermal equalization system of any of claims 3-7, wherein: The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system.

9. A battery, characterized by: The application relates to a battery thermal equalization system.

10. An energy storage device, characterized by: The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. The application relates to a battery thermal equalization system. 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