Temperature control method for capacity grading equipment

Abstract

The invention relates to the technical field of batteries, and discloses a capacity grading equipment temperature control method, which comprises the following steps that: a plurality of fan groups are used for respectively cooling a battery; the environment temperature X1 of the capacity grading equipment and the temperature of each battery are acquired, and the average value X2 of the temperature of each battery and the average value X3n of the temperature of the battery in each battery placing area are calculated; calculating a first fitting value S1 = X1 * A + X2 * B; a difference value between the first fitting value S1 and a preset target value is used as a first input value of PID calculation, and a first output value P1 is obtained through PID calculation; the battery temperature mean value X3n in the battery containing area is subtracted from the battery temperature mean value X2 to obtain a plurality of difference values, the difference values serve as second input values of PID calculation, and a second output value P2m is obtained through PID calculation; calculating a second fitting value S2 = P1 * C + P2m * D; and controlling the wind speed of each fan group according to the second fitting value S2. The method can ensure that the temperatures of a plurality of batteries tend to be consistent, and ensures the accuracy of battery capacity measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a temperature control method for capacity division equipment. Background Art

[0002] There are certain differences after the battery is manufactured. In order to distinguish different batteries, the capacity of the battery is generally screened using capacity separation equipment. The battery is charged and discharged using power equipment, and the control system records all current and voltage data during the battery charging time. The current data and time in the capacity calibration phase are selected for integration to obtain the capacity information of the battery. Among them, temperature can easily affect the battery cut-off voltage or cut-off current, which has a greater impact on the battery's charge and discharge performance.

[0003] Existing capacity separation equipment generally uses pallets to load batteries for operation. When the number of batteries in the pallet is increased, the volume of the storage location of the capacity separation equipment does not increase in the same proportion, resulting in uneven heat dissipation of each battery, which in turn causes great differences in the ambient temperature of multiple batteries in different storage locations of the capacity separation equipment or in the same storage location, ultimately resulting in large deviations in the accuracy of battery capacity measurement. Summary of the invention

[0004] In view of this, the present invention provides a temperature control method for a capacity division device to solve the problem that the heat dissipation effect of the capacity division device is poor and the temperature difference between different batteries is large, resulting in deviation in the accuracy of battery capacity measurement.

[0005] The present invention provides a temperature control method for a capacity-dividing device, the capacity-dividing device comprising: a device body, a plurality of fan groups and a plurality of battery placement areas, wherein the plurality of fan groups are arranged at the bottom of the device body; the plurality of battery placement areas are arranged in the device body and above the plurality of fan groups, each of the battery placement areas is used to place a battery, and each of the fan groups corresponds to one of the battery placement areas;

[0006] The temperature control method of the volume separation equipment comprises:

[0007] Using a plurality of the fan groups to dissipate heat from the batteries in each of the battery placement areas;

[0008] Obtain the ambient temperature X1 of the capacity division device, the temperature of each battery, and calculate the average value X2 of the temperature of each battery and the average value X2 of the battery temperature in each battery placement area. 3n , where n is 1, 2, ..., n, and the unit of temperature is Celsius;

[0009] Calculate the first fitting value S1=X1×A+X2×B, where A is the ambient temperature coefficient and B is the battery temperature coefficient;

[0010] The difference between the first fitting value S1 and the preset target value is used as the first input value of PID calculation, and the first output value P1 is obtained through PID calculation; the preset target value is a preset standard temperature value;

[0011] The average battery temperature X in each battery placement area 3n The temperature of each battery is subtracted from the average value X2 to obtain a plurality of difference values, and the plurality of difference values ​​are used as the second input value of the PID calculation to obtain a plurality of second output values ​​P through the PID calculation. 2m , where m is 1, 2, ..., m;

[0012] Calculate the second fitting value S2 = P1 × C + P 2m ×D, in addition, C is the first output value coefficient, and D is the second output value coefficient;

[0013] The wind speed V of each of the fan groups is controlled according to the second fitting value S2.

[0014] Beneficial effects: The present invention uses multiple fan groups to dissipate heat for multiple batteries in each battery placement area, takes away the heat of multiple batteries, and adopts PID temperature control method according to the ambient temperature of the capacity division equipment and the temperature of each battery to adjust the wind speed of each fan group in real time. It has good heat dissipation effect, can make the temperature of multiple batteries tend to be consistent, realizes multi-variable control capability, increases the controllability and flexibility of battery temperature, and thus helps to improve the accuracy of battery capacity measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic flow chart of a temperature control method for a volume separation device according to an embodiment of the present invention;

[0017] Figure 2 The figure is a schematic diagram of the structure of a capacity division device according to an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 1. Equipment body; 2. Fan assembly; 3. Battery placement area; 4. Battery; 5. Heat exchange device; 501. Heat exchange air duct; 502. Heat exchanger; 503. Water inlet pipe; 504. Water outlet pipe; 505. Flow valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] Combine the following Figure 1 to Figure 2 , describing an embodiment of the present invention.

[0022] According to an embodiment of the present invention, on the one hand, Figure 1 As shown, a temperature control method for a capacity-dividing device is provided. The capacity-dividing device comprises: a device body 1, a plurality of fan groups 2 and a plurality of battery placement areas 3, wherein the plurality of fan groups 2 are arranged at the bottom of the device body 1; the plurality of battery placement areas 3 are arranged in the device body 1 and above the plurality of fan groups 2, each battery placement area 3 is used to place a battery 4, and each fan group 2 corresponds to a battery placement area 3.

[0023] The temperature control method of the volume fractionation equipment comprises:

[0024] S100 , using a plurality of fan groups 2 to dissipate heat from the batteries 4 in each battery placement area 3 .

[0025] S200, obtaining the ambient temperature X1 of the capacity division device, the temperature of each battery 4 and calculating the average value X2 of the temperature of each battery 4 and the average value X2 of the temperature of the battery 4 in each battery placement area 3 3n , where n is 1, 2, ..., n, and the unit of temperature is degrees Celsius.

[0026] S300 , calculating a first fitting value S1=X1×A+X2×B, where A is the ambient temperature coefficient and B is the battery temperature coefficient.

[0027] S400, taking the difference between the first fitting value S1 and the preset target value as the first input value of PID calculation, and obtaining the first output value P1 through PID calculation. The preset target value is a preset standard temperature value, and the preset standard temperature value is within the range of 25±2°C, and the calculation result range of the first output value P1 is between 0 and 1, that is, between 0% and 100%.

[0028] S500, the average temperature of the battery 4 in each battery placement area 3 is X 3n The temperature of each battery 4 is subtracted from the average value X2 to obtain multiple difference values, and the multiple difference values ​​are used as the second input value of PID calculation, and multiple second output values ​​P are obtained through PID calculation. 2m, where m is 1, 2, ..., m. The second output value P 2m The calculation result ranges from 0 to 1, that is, from 0% to 100%.

[0029] S600, calculate the second fitting value S2 = P1 × C + P 2m ×D, in addition, C is the first output value coefficient, D is the second output value coefficient, and the calculation result range of the second fitting value S2 is between 0 and 1, that is, between 0% and 100%.

[0030] S700 , controlling the wind speed V of each fan group 2 according to the second fitting value S2 .

[0031] The temperature control method for capacity division equipment provided in the embodiment of the present invention dissipates heat for multiple batteries 4 in each battery placement area 3 through multiple fan groups 2 respectively, takes away the heat of the multiple batteries 4, and adopts PID temperature control method according to the ambient temperature of the capacity division equipment and the temperature of each battery 4 to adjust the wind speed of each fan group 2 in real time, which has good heat dissipation effect, can make the temperature of multiple batteries 4 tend to be consistent, realizes multivariable control capability, increases the controllability and flexibility of the temperature of the battery 4, and is conducive to improving the accuracy of the capacity measurement of the battery 4.

[0032] Specifically, the specific steps of PID (Proportional-Integral-Derivative) calculation adopt the existing PID algorithm steps, and the embodiments of the present invention do not impose too many restrictions on this. The process of PID calculation is simple, has high accuracy, and is flexible to use. In step S200, the ambient temperature of the capacity division device can be detected by an ambient temperature sensor, and the temperature of each battery 4 can be detected by a battery temperature sensor. Multiple ambient temperature sensors can be set, and the average of the temperature values ​​detected by multiple ambient temperature sensors is used as the ambient temperature of the capacity division device to improve the detection accuracy of the ambient temperature of the capacity division device.

[0033] In addition, the range of the ambient temperature X1 of the capacity distribution equipment is 22°C to 28°C, the range of the average temperature X2 of each battery 4 is 23°C to 45°C, and similarly, the average temperature X2 of the battery 4 in each battery placement area 3 is 3n The range is 23℃ to 45℃.

[0034] Specifically, the correspondence between the battery placement area 3 and the tray can be selected and set as needed. For example, multiple battery placement areas 3 are set in the device body 1, and one battery placement area 3 includes a tray fully loaded with batteries 4; or one battery placement area 3 includes multiple trays fully loaded with batteries 4; or a tray fully loaded with batteries 4 includes multiple groups of batteries 4, and one battery placement area 3 includes a group of batteries 4, and each group of batteries 4 includes at least one battery 4.

[0035] It should be noted that the ambient temperature sensor and the battery temperature sensor in the embodiment of the present invention can be selected from existing conventional temperature sensors as needed, and the embodiment of the present invention does not impose too many restrictions on this.

[0036] In one embodiment, the wind speed V of each fan group 2 is calculated as follows: V=V min +(V max -V min )×S2, in addition, V min is the minimum wind speed of fan group 2, V max The maximum wind speed of fan group 2.

[0037] According to the above formula, the second fitting value S2 is proportional to the wind speed V of the fan group 2. By calculating and controlling the wind speed through the second fitting value S2, accurate control of the wind speed can be achieved.

[0038] For example, the minimum wind speed V of fan group 2 is preset min The maximum wind speed is 100RPM. max is 2000RPM.

[0039] When the second fitting value S2 is calculated to be 0%, the wind speed V of the fan group 2 = 100RPM + (2000RPM - 100RPM) x 0% = 100RPM.

[0040] When the second fitting value S2 is calculated to be 50%, the wind speed V of the fan group 2 = 100RPM + (2000RPM - 100RPM) x 50% = 1050RPM.

[0041] When the second fitting value S2 is calculated to be 100%, the wind speed V of the fan group 2 is = 100RPM + (2000RPM - 100RPM) x 100% = 2000RPM.

[0042] In one embodiment, S300, calculating the first fitting value S1=X1×A+X2×B, further includes: A satisfies 0.2≤A≤0.9, and B satisfies 0.1≤B≤0.8. For example, A is 0.2, 0.3, 0.7, 0.9, etc., and B is 0.1, 0.3, 0.7, etc.

[0043] In some other embodiments, multiple ambient temperatures of the capacity division device are collected, and the first fitting value S1=M1×A+M2×B, where M1 is the median of each ambient temperature and M2 is the median of the temperature of each battery 4, is used to simplify the calculation process.

[0044] In addition, in step S200, after obtaining the ambient temperature X1 of the capacity division device and the temperature of each battery 4, the median temperature M of the battery 4 in each battery placement area 3 is selected.3n , where n is 1, 2, ..., n, and the unit of temperature is degrees Celsius.

[0045] In step S400, the median temperature M of the battery 4 in each battery placement area 3 is 3n The difference between the temperature of each battery 4 and the median M2 is respectively obtained to obtain a plurality of difference values, and the plurality of difference values ​​are respectively used as the second input value of the PID calculation, and a plurality of second output values ​​P are obtained through the PID calculation. 2m .

[0046] In one embodiment, S600, calculate the second fitting value S2 = P1×C+P 2m ×D, also includes: C satisfies, 0.2≤C≤0.8, D satisfies, 0.2≤D≤0.8. For example, C is 0.2, 0.3, 0.8, etc., and B is 0.2, 0.3, 0.7, etc.

[0047] In one embodiment, the temperature control method of the capacity distribution equipment further includes:

[0048] S800 , delivering cold air to the plurality of fan groups 2 through the heat exchange device 5 , and performing heat exchange on the hot air.

[0049] S900 , controlling the opening of the flow valve 505 on the heat exchange device 5 according to the first output value P1 .

[0050] The heat exchange capacity of the heat exchange device 5 can be controlled by the flow valve 505 . The opening of the flow valve 505 is controlled according to the first output value P1 , which can further accurately control the heat dissipation effect of the battery 4 and improve the temperature consistency between the batteries 4 .

[0051] Further, in one embodiment, S900, controlling the opening of the flow valve 505 on the heat exchange device 5 according to the first output value P1, specifically includes:

[0052] S910 , converting the first output value P1 into a voltage value U through a voltage conversion module, where the voltage value U corresponds to the opening of the flow valve 505 .

[0053] Specifically, the voltage conversion module can calculate the size of the voltage value U according to the size of the first output value P1, thereby converting the first output value P1 into the voltage value U, and inputting a voltage of a corresponding value to the flow valve 505. The flow valve 505 is a solenoid valve, and the opening size of the flow valve 505 can be controlled by inputting different voltages. The opening of the flow valve 505 refers to the degree of opening of the flow valve 505, that is, the size of the flow channel inside the valve that is opened. It indicates the degree of opening of the flow valve 505 when controlling the flow of the fluid, usually expressed as a percentage. For example, an opening of 100% means that the flow valve 505 is fully open and the flow rate of the fluid is maximum; and an opening of 0% means that the flow valve 505 is fully closed.

[0054] S920. According to the converted voltage value U, adjust the opening of the flow valve 505.

[0055] It should be noted that the voltage value U is proportional to the opening of the flow valve 505 , and different voltage values ​​U correspond to different openings of the flow valve 505 . The specific corresponding relationship can be selected and set according to actual needs.

[0056] Exemplarily, the preset voltage value U ranges from 0V to 10V, and the opening range of the flow valve 505 ranges from 0.5% to 100%.

[0057] When the first output value P1 is calculated to be 0%, the voltage value U converted by the voltage conversion module is 0 volt, and the opening degree of the corresponding flow valve 505 is 0.5%.

[0058] When the first output value P1 is calculated to be 50%, the voltage value U converted by the voltage conversion module is 5V, and the opening degree of the corresponding flow valve 505 is 50.25%.

[0059] When the first output value P1 is calculated to be 100%, the voltage value U converted by the voltage conversion module is 10V, and the opening degree of the corresponding flow valve 505 is 100%.

[0060] In one embodiment, the heat exchange device 5 includes: a heat exchange air duct 501 and a heat exchanger 502. The heat exchange air duct 501 is arranged on the side of the device body 1. The heat exchanger 502 is arranged in the heat exchange air duct 501, and the opposite ends are respectively connected to a water inlet pipe 503 and a water outlet pipe 504.

[0061] Further, step S800, delivering cold air to the plurality of fan groups 2 through the heat exchange device 5 and performing heat exchange on the hot air, specifically includes:

[0062] S810 , the outlet of the heat exchange air duct 501 faces the plurality of fan groups 2 and delivers cold air, and the inlet of the heat exchange air duct 501 allows hot air to flow into it.

[0063] S850, the hot air in the heat exchange air duct 501 is heat exchanged by the heat exchanger 502 to generate cold air.

[0064] Specifically, the water inlet pipe 503 inputs cooling water to the heat exchanger 502, and the cooling water exchanges heat with the hot air at the heat exchanger 502 to form hot water flowing out from the water outlet pipe 504. The hot air forms cold air after passing through the heat exchanger 502, and the cold air blows toward the multiple fan groups 2. Then, under the action of the multiple fan groups 2, it flows upward and takes away the heat of the multiple batteries 4 to reduce the temperature of the batteries 4, and then forms hot air that gathers at the top of the device body 1. Afterwards, the hot air is input into the heat exchange air duct 501, and after heat exchange in the heat exchanger 502, it is re-formed into cold air and input into the receiving cavity, forming a heat dissipation cycle.

[0065] In one embodiment, the temperature control method of the capacity distribution equipment further includes:

[0066] S1000, obtaining historical average values ​​of the ambient temperature of the capacity division device and the temperature of each battery 4 in the previous cycle. The previous cycle can be set as needed, such as one day, one week, or one month.

[0067] S1100. Based on the historical average and the preset target value, the preset target value is corrected.

[0068] Further, in one embodiment, S1100, based on the magnitude of the historical average value and the preset target value, the preset target value is corrected, specifically including:

[0069] S1110. When the historical average value is greater than the preset target value, it means that the temperature of the preset target value is greater than the cooling capacity of the capacity division device, and the preset target value needs to be revised upward to increase the preset target value.

[0070] S1120. When the historical average value is less than the preset target value, it means that the cooling capacity of the capacity division equipment is greater than the temperature of the preset target value, and the preset target value needs to be revised downward to reduce the preset target value.

[0071] By adjusting the preset target value to be consistent with the historical average value, the consistency of the temperature of the battery 4 is further ensured, and the accuracy of the capacity measurement of the battery 4 is improved.

[0072] It should be noted that the preset target value needs to be within the preset standard temperature range. In step S1100, the preset target value cannot be corrected to exceed the standard temperature range. For example, if the standard temperature range is 25±2°C, in step S1110, the preset target value cannot be increased to more than 27°C, and in step S1120, the preset target value cannot be reduced to less than 23°C.

[0073] In one embodiment, S100, using multiple fan groups 2 to dissipate heat from batteries 4 in multiple areas of the capacity-divided device, further comprising:

[0074] S110 , each fan group 2 includes at least one fan and corresponds to at least one battery placement area 3 .

[0075] Specifically, at least one battery 4 is arranged in each battery placement area 3, that is, at least one fan can correspond to one battery 4 for heat dissipation, so as to improve the heat dissipation effect of the battery 4 and ensure the temperature consistency of multiple batteries 4. Of course, multiple batteries 4 can also be arranged in one battery placement area 3 and correspond to one fan group 2. For example, a pair of batteries 4 are arranged in the battery placement area 3, and one fan group 2 corresponds to a pair of batteries 4 for heat dissipation.

[0076] According to an embodiment of the present invention, on the other hand, Figure 2 As shown, a capacity division device is also provided, comprising: a device body 1, a plurality of fan groups 2 and a plurality of battery placement areas 3, wherein the plurality of fan groups 2 are arranged at the bottom of the device body 1. The plurality of battery placement areas 3 are arranged in the device body 1 and above the plurality of fan groups 2, each battery placement area 3 is used to place a battery 4, and each fan group 2 corresponds to a battery placement area 3.

[0077] The capacity division device provided in the embodiment of the present invention dissipates heat for the multiple batteries 4 in each battery placement area 3 through the multiple fan groups 2 respectively, takes away the heat of the multiple batteries 4, and adopts the PID temperature control method according to the ambient temperature of the capacity division device and the temperature of each battery 4 to adjust the wind speed of each fan group 2 in real time, which has a good heat dissipation effect, can make the temperature of the multiple batteries 4 tend to be consistent, realizes the controllability of multiple variables, increases the controllability and flexibility of the temperature of the battery 4, and is conducive to improving the accuracy of the capacity measurement of the battery 4.

[0078] Specifically, Figure 2 As shown, the capacity division device further includes a heat exchange device 5. The heat exchange device 5 is arranged on the device body 1. A plurality of battery placement areas 3 are arranged in the device body 1, and batteries 4 are arranged in the battery placement areas 3. The heat exchange device 5 is used to transport cold air to the batteries 4 in the plurality of battery placement areas 3 through a plurality of fan groups 2, and to exchange heat with hot air.

[0079] In one embodiment, Figure 2 As shown, the heat exchange device 5 includes: a heat exchange air duct 501, a heat exchanger 502, a water inlet pipe 503 and a water outlet pipe 504. The heat exchange air duct 501 is arranged on the side of the device body 1. The heat exchanger 502 is arranged in the heat exchange air duct 501. The heat exchange air duct 501 is arranged on the outside of the device body 1. The water inlet pipe 503 is connected to the inlet end of the heat exchanger 502 for inputting cold water. The water outlet pipe 504 is connected to the outlet end of the heat exchanger 502 for outputting hot water formed after the heat exchanger 502 exchanges heat with hot air. A flow valve 505 is provided on the water inlet pipe 503, and the opening of the flow valve 505 is adjustable.

[0080] Specifically, the water inlet pipe 503 inputs cooling water to the heat exchanger 502, and the temperature of the cooling water is about 16°C to 18°C. The cooling water exchanges heat with the hot air at the heat exchanger 502, forming hot water flowing out from the water outlet pipe 504. The hot air forms cold air after passing through the heat exchanger 502, and the cold air blows toward the multiple fan groups 2. Then, under the action of the multiple fan groups 2, it flows upward and takes away the heat of the multiple batteries 4 to reduce the temperature of the batteries 4, and then forms hot air that gathers at the top of the device body 1. Afterwards, the hot air is input into the heat exchange air duct 501, and after heat exchange in the heat exchanger 502, it is re-formed into the cold air input into the accommodating cavity, forming a heat dissipation cycle.

[0081] In addition, the water flow in the water inlet pipe 503 and the water outlet pipe 504 depends on the number of batteries 4, the charge and discharge current specifications, the internal resistance of the battery 4, etc. The "heat absorption" of the cooling water in the water inlet pipe 503 and the water outlet pipe 504 needs to balance the "heat generation" of the battery 4. In the embodiment of the present invention, the flow of cooling water in the water inlet pipe 503 and the water outlet pipe 504 is controlled by adjusting the opening of the flow valve 505, thereby stabilizing the temperature of the battery 4.

[0082] Furthermore, in one embodiment, the water inlet pipe 503 and the water outlet pipe 504 may also be connected to other heat exchange devices to form a heat exchange cycle to improve the heat exchange capacity of the heat exchanger 502 .

[0083] In order to realize the basic functions of the capacity division device, the capacity division device in this embodiment may also include other necessary modules or components, such as a power supply system, a control system, etc. It should be noted that the other necessary modules or components included in the capacity division device may be any suitable existing structure. In order to clearly and briefly describe the technical solution provided by this embodiment, the above-mentioned part will not be described in detail here, and the drawings in the specification are also simplified accordingly. However, it should be understood that the scope of the embodiments of the present invention is not limited by this.

[0084] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A temperature control method for a volume fractionation device, characterized in that: The capacity division device comprises: a device body (1), a plurality of fan groups (2) and a plurality of battery placement areas (3), wherein the plurality of fan groups (2) are arranged at the bottom of the device body (1); the plurality of battery placement areas (3) are arranged in the device body (1) and above the plurality of fan groups (2), each of the battery placement areas (3) is used to place a battery (4), and each of the fan groups (2) corresponds to one of the battery placement areas (3); The temperature control method of the volume separation equipment comprises: Utilizing a plurality of fan groups (2) to dissipate heat from the batteries (4) in each of the battery placement areas (3); Obtain the ambient temperature X1 of the capacity dividing device, the temperature of each of the batteries (4), and calculate the average value X2 of the temperature of each of the batteries (4) and the average value X2 of the temperature of the batteries (4) in each of the battery placement areas (3). 3n , where n is 1, 2, ..., n, and the unit of temperature is Celsius; Calculate the first fitting value S1=X1×A+X2×B, where A is the ambient temperature coefficient and B is the battery temperature coefficient; The difference between the first fitting value S1 and the preset target value is used as the first input value of PID calculation, and the first output value P1 is obtained through PID calculation; the preset target value is a preset standard temperature value; The average temperature X of the battery (4) in each battery placement area (3) 3n The temperature of each battery (4) is subtracted from the average value X2 to obtain a plurality of difference values, and the plurality of difference values ​​are used as the second input value of the PID calculation to obtain a plurality of second output values ​​P through the PID calculation. 2m , where m is 1, 2, ..., m; Calculate the second fitting value S2 = P1 × C + P 2m ×D, in addition, C is the first output value coefficient, and D is the second output value coefficient; The wind speed V of each of the fan groups (2) is controlled according to the second fitting value S2.

2. The temperature control method of the volume separation equipment according to claim 1, characterized in that: The calculation formula of the wind speed V of each fan group (2) is as follows: V = V min +(V max -V min )×S2, in addition, V min is the minimum wind speed of fan group (2), V max is the maximum wind speed of fan group (2).

3. The temperature control method of the volume separation equipment according to claim 1, characterized in that: The calculation of the first fitting value S1=X1×A+X2×B also includes: A satisfies 0.2≤A≤0.9, and B satisfies 0.1≤B≤0.

8.

4. The temperature control method of the volume separation equipment according to claim 1, characterized in that: The second fitting value S2 is calculated as P1×C+P 2m ×D, also includes: C satisfies, 0.2≤C≤0.8, D satisfies, 0.2≤D≤0.

8.

5. The temperature control method of the volume separation equipment according to any one of claims 1 to 4, characterized in that: Also includes: The heat exchange device (5) delivers cold air to the plurality of fan groups (2) and performs heat exchange on the hot air; The opening degree of the flow valve (505) on the heat exchange device (5) is controlled according to the first output value P1.

6. The temperature control method of the volume separation equipment according to claim 5, characterized in that: The step of controlling the opening of the flow valve (505) on the heat exchange device (5) according to the first output value P1 specifically comprises: The first output value P1 is converted into a voltage value U by a voltage conversion module, wherein the voltage value U corresponds to the opening of the flow valve (505); The opening of the flow valve (505) is adjusted according to the size of the converted voltage value U.

7. The temperature control method of the volume separation equipment according to claim 5, characterized in that: The heat exchange device (5) comprises: a heat exchange air duct (501) and a heat exchanger (502); the heat exchanger (502) is arranged in the heat exchange air duct (501), and is respectively connected to a water inlet pipe (503) and a water outlet pipe (504) at two opposite ends; The heat exchange device (5) delivers cold air to the plurality of fan groups (2) and performs heat exchange on the hot air, specifically comprising: The outlet of the heat exchange air duct (501) faces the plurality of fan groups (2) and delivers cold air, and the inlet of the heat exchange air duct (501) allows hot air to flow in; The heat exchanger (502) exchanges heat with the hot air in the heat exchange air duct (501) to generate cold air.

8. The temperature control method of a volume separation device according to any one of claims 1 to 4, characterized in that: Also includes: Obtaining historical average values ​​of the ambient temperature of the capacity division device and the temperature of each battery (4) in the previous cycle; Based on the magnitude of the historical average and the preset target value, the preset target value is corrected.

9. The temperature control method of the volume separation equipment according to claim 8, characterized in that: The modifying of the preset target value based on the magnitude of the historical average value and the preset target value specifically includes: When the historical average is greater than the preset target value, the preset target value is increased; When the historical average value is less than the preset target value, the preset target value is lowered.

10. The temperature control method of a volume separation device according to any one of claims 1 to 4, characterized in that: The method of using a plurality of the fan groups (2) to dissipate heat from the batteries (4) in each of the battery placement areas (3) comprises: each of the fan groups (2) comprises at least one fan and corresponds to at least one of the battery placement areas (3).

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