Battery temperature partition control method, device, equipment and medium

Abstract

The application relates to the technical field of batteries, and particularly provides a battery temperature partition control method and device, equipment and a medium, aiming to solve the technical problem that the temperature value of a region only represents the battery temperature around a temperature sensor, cannot reflect the real temperature condition of all the batteries in the region, the battery temperature cannot be effectively adjusted according to the temperature, and the performance of the battery is low. To achieve the purpose, the application comprises the following steps: obtaining the cell temperature of a plurality of batteries, the water inlet temperature of a liquid cooling machine and the internal humidity of an energy storage cabinet; obtaining the highest cell temperature, the average cell temperature, the lowest cell temperature and the cell temperature rise rate according to the cell temperature of the plurality of batteries; and obtaining temperature control information according to the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the water inlet temperature of the liquid cooling machine or the internal humidity of the energy storage cabinet, so that the temperature control device controls and processes the temperature of the cell according to the temperature control information.

Description

Technical Field

[0001] This application relates to the field of energy storage system technology, and more specifically, to a battery temperature zone control method, device, equipment, and medium. Background Technology

[0002] With the rapid development of energy storage systems, the requirements for battery performance are becoming increasingly stringent. Temperature management is crucial to ensuring optimal battery performance. During charging or discharging, the battery temperature continuously rises; failure to effectively control this temperature can lead to a decline in battery performance.

[0003] In existing technologies, temperature sensors are typically installed in various areas of the battery pack to collect the temperature of different regions. When the temperature of a certain area exceeds a preset maximum temperature threshold, that area is cooled using methods such as fans, water cooling, or heat sinks. When the temperature of a certain area is below a preset minimum temperature threshold, that area is heated using heaters. However, in large battery packs, a particular area may contain a large number of batteries. Therefore, the temperature value of that area only represents the temperature of the batteries around the temperature sensor and cannot reflect the true temperature of all batteries in that area. Based on this temperature alone, effective battery temperature regulation is impossible, leading to the technical problem of low battery performance. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, this application is made to provide a solution or at least a partial solution to the technical problem that the regional temperature of the battery pack cannot represent the true regional temperature, and the battery temperature cannot be effectively regulated based on the regional temperature, resulting in low battery performance.

[0005] In a first aspect, this application provides a battery temperature zone control method, including:

[0006] The cell temperature of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet are obtained.

[0007] Based on the cell temperatures of the multiple batteries, the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate are obtained.

[0008] Temperature control information is obtained based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, so that the temperature control device can control the temperature of the battery cell according to the temperature control information.

[0009] In one technical solution of the aforementioned battery temperature zone control method, the step of obtaining temperature control information based on the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the liquid cooler inlet temperature, or the humidity inside the energy storage cabinet, so that the temperature control device can control the temperature of the cell based on the temperature control information, includes:

[0010] The operating mode is obtained based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet.

[0011] Based on the operating mode, the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode are adjusted.

[0012] In one technical solution of the above-mentioned battery temperature zone control method, the step of adjusting the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode according to the operating mode includes:

[0013] If the operating mode is determined to be the cooling mode, then the first cooling flow rate, the first cooling power, and the first energy storage converter power are obtained based on the highest temperature of the battery cell, the average temperature of the battery cell, and the temperature rise rate of the battery cell.

[0014] The battery is cooled based on the first cooling flow rate, the first cooling power, and the first energy storage converter power.

[0015] In one technical solution of the above-mentioned battery temperature zone control method, the step of adjusting the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode according to the operating mode further includes:

[0016] If the working mode is determined to be the heating mode, then the second cooling power, the second energy storage converter power and the first heating rate are obtained based on the lowest temperature of the battery cell, the average temperature of the battery cell and the temperature rise rate of the battery cell.

[0017] The battery is heated according to the second cooling power, the second energy storage converter power, and the first heating rate.

[0018] In one technical solution of the aforementioned battery temperature zone control method, the step of obtaining the operating mode based on the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the inlet water temperature, or the internal humidity of the energy storage cabinet includes:

[0019] If it is determined that the inlet temperature of the liquid cooler is lower than the preset inlet temperature, then the working mode is determined to be the self-circulation mode.

[0020] The adjustment of the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode according to the operating mode includes:

[0021] According to the self-circulation mode, the battery is cooled down.

[0022] In one technical solution of the aforementioned battery temperature zone control method, the step of obtaining the operating mode based on the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the inlet water temperature, or the internal humidity of the energy storage cabinet includes:

[0023] If it is determined that the humidity inside the energy storage cabinet is greater than the preset humidity, then the working mode is determined to be dehumidification mode;

[0024] According to the dehumidification mode, the energy storage cabinet is dehumidified.

[0025] In one technical solution of the above-mentioned battery temperature zone control method, the method further includes:

[0026] Monitor the highest temperature of the battery cell;

[0027] If it is determined that the highest temperature of the battery cell is greater than the preset battery cell temperature, an alarm message is sent to the maintenance personnel's terminal.

[0028] Secondly, this application provides a battery temperature zone control device, comprising:

[0029] The acquisition module is used to acquire the cell temperature of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet.

[0030] The analysis module is used to obtain the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate based on the cell temperatures of the multiple batteries.

[0031] The processing module is used to obtain temperature control information based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, so that the temperature control device can control the temperature of the battery cell according to the temperature control information.

[0032] Thirdly, this application provides a battery temperature zone control device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the method described in any one of the first aspects through the computer program.

[0033] Fourthly, this application provides a computer-readable storage medium storing a plurality of program codes adapted to be loaded and run by a processor to perform the method described in any one of the first aspects.

[0034] This application provides a battery temperature zone control method, apparatus, device, and medium. Specifically, the method involves: acquiring the cell temperatures of multiple batteries, the inlet temperature of a liquid cooler, and the internal humidity of an energy storage cabinet; obtaining the highest cell temperature, average cell temperature, lowest cell temperature, and cell temperature rise rate based on the cell temperatures of the multiple batteries; and obtaining temperature control information based on the highest cell temperature, average cell temperature, lowest cell temperature, cell temperature rise rate, the inlet temperature of the liquid cooler, or the internal humidity of the energy storage cabinet, so that a temperature control device can control the cell temperature according to the temperature control information, thereby achieving effective regulation of the battery temperature. Attached Figure Description

[0035] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0036] In addition, similar numbers in the diagram are used to represent similar components, where:

[0037] Figure 1 This is a schematic diagram of a battery temperature zoning control system according to an embodiment of this application.

[0038] Figure 2 A schematic flowchart of a battery temperature zone control method according to an embodiment of this application;

[0039] Figure 3 A schematic flowchart of a second embodiment of a battery temperature zone control method provided in this application;

[0040] Figure 4 A schematic flowchart of a third embodiment of a battery temperature zone control method provided in this application;

[0041] Figure 5 A schematic flowchart of a fourth embodiment of a battery temperature zone control method provided in this application;

[0042] Figure 6 A flowchart illustrating a fifth embodiment of a battery temperature zone control method provided in this application;

[0043] Figure 7 A schematic flowchart of a sixth embodiment of a battery temperature zone control method provided in this application;

[0044] Figure 8 A schematic flowchart of a battery temperature zone control method according to embodiment seven of this application;

[0045] Figure 9 This is a schematic diagram of a battery temperature zone control device according to an embodiment of this application.

[0046] Figure 10 This is a schematic diagram of a battery temperature zone control device according to an embodiment of this application.

[0047] List of reference numerals :

[0048] 11: Battery management device; 12: Temperature acquisition device; 13: Liquid chiller; 14: Energy storage converter; 15: Heating device; 21: Acquisition module; 22: Analysis module; 23: Processing module; 31: Processor; 32: Memory. Detailed Implementation

[0049] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0050] In the description of this application, "module" and "processor" can include hardware, software, or a combination of both. A module can include hardware circuitry, various suitable sensors, communication ports, memory, and can also include software components, such as program code, or a combination of software and hardware. A processor can be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. The processor has data and / or signal processing capabilities. The processor can be implemented in software, in hardware, or a combination of both. Non-transitory computer-readable storage media includes any suitable medium capable of storing program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc. The term "A and / or B" means all possible combinations of A and B, such as only A, only B, or A and B. The terms "at least one A or B" or "at least one of A and B" have a similar meaning to "A and / or B" and can include only A, only B, or A and B. The singular terms "a" or "this" can also include plural forms.

[0051] In the prior art, in a large battery pack, a certain area contains a large number of batteries. A temperature sensor is set in this area to collect the temperature value of the area. This temperature value only represents the temperature of the batteries around the temperature sensor and cannot reflect the true temperature of all the batteries in the area. Based on this temperature value, the battery temperature cannot be effectively regulated, which leads to the technical problem of low battery performance.

[0052] Based on this, in order to solve the above-mentioned technical problems, this application provides a new battery temperature zone control method to effectively regulate the battery temperature in a large battery pack.

[0053] Figure 1 This is a schematic diagram of a battery temperature zoning control system according to an embodiment of this application, as shown in the following figure. Figure 1 As shown, the system includes: a battery management device 11, a temperature acquisition device 12, a liquid cooler 13, an energy storage converter 14, and a heating device 15.

[0054] The temperature acquisition device 12 collects the cell temperature of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet. It then sends these data to the battery management device 11. Based on the cell temperatures of the multiple batteries, the battery management device 11 obtains the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate. Based on these data, it also obtains temperature control information and sends it to the liquid cooler 13, the energy storage converter 14, or the heating device 15 to control the cell temperature.

[0055] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0056] Figure 2 This is a flowchart illustrating an embodiment of a battery temperature zone control method provided in this application. Figure 2 As shown, specifically, the method includes:

[0057] Step S201: Obtain the cell temperature of multiple batteries, the inlet temperature of the liquid cooler, and the internal humidity of the energy storage cabinet.

[0058] In this embodiment, a temperature sensor is installed in each battery to collect the cell temperature of the battery.

[0059] In this embodiment, a cell temperature array is obtained by monitoring the cell temperatures of multiple batteries within a preset time period.

[0060] Step S202: Based on the cell temperatures of multiple batteries, obtain the highest cell temperature, average cell temperature, lowest cell temperature, and cell temperature rise rate.

[0061] In this embodiment, among the cell temperatures of multiple batteries acquired over a period of time, the maximum cell temperature is taken as the highest cell temperature, and the average cell temperature of multiple batteries over a period of time is taken as the average cell temperature.

[0062] Step S203: Obtain temperature control information based on the highest cell temperature, average cell temperature, lowest cell temperature, cell temperature rise rate, liquid cooler inlet temperature, or humidity inside the energy storage cabinet, so that the temperature control device can control the cell temperature according to the temperature control information.

[0063] In this embodiment, temperature control information is obtained based on one or more of the following data: the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the rate of temperature rise of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet. This information is then used by the temperature control device to control the temperature of the battery cell.

[0064] In this embodiment, the temperature control device includes a liquid chiller, a heating device, and an energy storage converter.

[0065] In this embodiment, the cell temperatures of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet are acquired. Based on the cell temperatures of the multiple batteries, the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate are obtained. Temperature control information is obtained based on the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the liquid cooler inlet temperature, or the humidity inside the energy storage cabinet. This information is then used by the temperature control device to control the cell temperature. Compared to existing technologies where the temperature of a certain area in a large battery pack cannot reflect the temperature of that area, this method relies on the temperature of that area to control the temperature of that area. While adjusting the temperature of the cells in a conventional method may not effectively regulate the battery temperature, this application obtains the cell temperatures of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet. Based on the cell temperatures of the multiple batteries, it obtains the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate. Then, based on the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, it obtains temperature control information. This information is then used by a temperature control device to control the cell temperature, thereby effectively regulating the temperature of a certain area within the battery pack.

[0066] Figure 3 This is a flowchart illustrating a second embodiment of a battery temperature zone control method provided in this application. Based on the above embodiments, as... Figure 3 As shown, one specific implementation of step S203 is as follows:

[0067] Step S301: Obtain the working mode based on the highest cell temperature, average cell temperature, lowest cell temperature, cell temperature rise rate, liquid cooler inlet temperature, or humidity inside the energy storage cabinet.

[0068] In this embodiment, the working mode is determined based on the first correspondence between the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the liquid cooler inlet temperature, or the humidity inside the energy storage cabinet and the working mode.

[0069] In this embodiment, for example, the first correspondence is shown in Table 1:

[0070] Table 1 First Correspondence Relationship

[0071]

[0072] In this embodiment, the cooling mode is stopped when the highest cell temperature is less than 25°C, the average cell temperature is less than 22°C, and the cell temperature rise rate is greater than 1°C / hour but less than 2°C / hour. The heating mode is stopped when the lowest cell temperature is greater than 20°C, the average cell temperature is greater than 23°C, and the cell temperature rise rate is greater than 1°C / hour but less than 2°C / hour.

[0073] Step S302: Adjust the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode according to the working mode.

[0074] In this embodiment, the highest cell temperature, average cell temperature, lowest cell temperature, cell temperature rise rate, liquid chiller inlet temperature, or internal humidity of the energy storage cabinet are matched with the data in Table 1 to obtain the corresponding working mode. Based on the working mode, the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode are adjusted.

[0075] In this embodiment, the cell temperatures of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet are acquired. Based on the cell temperatures of the multiple batteries, the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate are obtained. Based on the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, the operating mode is obtained. Based on the operating mode, the cooling flow rate, the power of the liquid cooler, the power of the energy storage converter, the heating power, or the liquid cooler mode are adjusted to provide suitable temperature and humidity for the batteries in the battery compartment, thereby ensuring that the batteries are in optimal condition.

[0076] Figure 4 This is a flowchart illustrating a third embodiment of a battery temperature zone control method provided in this application. Based on the above embodiments, as... Figure 4As shown, one specific implementation of step S302 is as follows:

[0077] Step S401: If the working mode is determined to be cooling mode, then the first cooling flow rate, the first cooling power and the first energy storage converter power are obtained based on the highest cell temperature, the average cell temperature and the cell temperature rise rate.

[0078] In this embodiment, when the working mode is determined to be the cooling mode, the first cooling flow rate, the first cooling power and the first energy storage converter power that match the highest temperature of the battery cell, the average temperature of the battery cell and the temperature rise rate of the battery cell are obtained from the preset correspondence.

[0079] In this embodiment, optionally, when the operating mode is determined to be cooling mode, according to formula 1:

[0080] P pcs =P*c2*k*(T) max -T vag -ΔV T / twenty one)

[0081] The power P of the first energy storage converter is obtained. pcs Where P is the rated power of the energy storage converter; k is the temperature sensitivity coefficient, with a value greater than 0 and less than 1, and a value of 0.2 in cooling mode. T max T represents the highest temperature of the battery cell. vag The average temperature of the battery cell is ΔV. T This represents the cell temperature rise rate.

[0082] Step S402: Cool the battery according to the first cooling flow rate, the first cooling power and the first energy storage converter power.

[0083] In this embodiment, a second correspondence is preset between the first cooling flow rate, the first cooling power, the first energy storage converter power, and the highest cell temperature, the average cell temperature, and the cell temperature rise rate.

[0084] In this embodiment, for example, the second correspondence is shown in Table 2.

[0085] Table 2 Second Correspondence

[0086] Maximum cell temperature Average cell temperature Cell temperature rise rate ≥28℃ ≥25℃ ≥6℃ / hour First cooling flow rate First cooling capacity First energy storage converter power 12 liters / minute 100％ 0P Maximum cell temperature Average cell temperature Cell temperature rise rate ≥28℃ ≥25℃ ≥4℃ / hour First cooling flow rate First cooling capacity First energy storage converter power 10 liters / minute 70％ 0.2P Maximum cell temperature Average cell temperature Cell temperature rise rate ≥28℃ ≥25℃ ≥2℃ / hour First cooling flow rate First cooling capacity First energy storage converter power 8 liters / minute 30％ 0.4P

[0087] In this embodiment, in cooling mode, the compressor of the refrigeration unit is turned on, allowing the high-temperature, high-pressure refrigeration fluid to be discharged from the compressor and condensed in the condenser. After releasing heat and cooling down, the fluid is throttled and depressurized through the expansion valve, then enters the evaporator and exchanges heat with the coolant. After absorbing heat and evaporating in the evaporator, the fluid flows to the compressor suction port to complete one refrigeration cycle. At this time, the water pump is turned on, the heating device is turned off, and the coolant, after being cooled in the plate evaporator, enters the battery pack liquid cooling plate to cool the battery, carrying away heat and thus cooling the battery.

[0088] In this embodiment, after obtaining the highest cell temperature, the average cell temperature, and the cell temperature rise rate, a first cooling flow rate, a first cooling power, and a first energy storage converter power that match the highest cell temperature, the average cell temperature, and the cell temperature rise rate are obtained according to the second correspondence relationship. Then, the first cooling flow rate and the first cooling power are sent to the chiller. The chiller performs control processing according to the first cooling flow rate and the first cooling power, and sends the first energy storage converter power to the energy storage converter. The energy storage converter performs control processing according to the first energy storage converter power.

[0089] In this embodiment, if the working mode is determined to be cooling mode, the first cooling flow rate, the first cooling power, and the first energy storage converter power are obtained based on the highest cell temperature, the average cell temperature, and the cell temperature rise rate. Based on the first cooling flow rate, the first cooling power, and the first energy storage converter power, the battery is cooled down, thereby enabling rapid cooling of the battery when the temperature is too high.

[0090] Figure 5 This is a flowchart illustrating a fourth embodiment of a battery temperature zone control method provided in this application. Based on the above embodiments, as... Figure 5 As shown, another specific implementation of step S302 is as follows:

[0091] Step S501: If the working mode is determined to be heating mode, then the second cooling power, the second energy storage converter power and the first heating rate are obtained based on the lowest cell temperature, the average cell temperature and the cell temperature rise rate.

[0092] In this embodiment, when the working mode is determined to be the heating mode, the second cooling power, the second energy storage converter power, and the first heating rate are obtained from a preset correspondence based on the lowest cell temperature, the average cell temperature, and the cell temperature rise rate.

[0093] In this embodiment, optionally, when the operating mode is determined to be the heating mode, according to formula 2:

[0094] P pcs=P*2 / 3*k*(T) min -T vag -ΔV T / twenty two)

[0095] The power P of the second energy storage converter is obtained. pcs Where P is the rated power of the energy storage converter; k is the temperature sensitivity coefficient, with a value greater than 0 and less than 1. In heating mode, the value of k is 0.2. T min T is the lowest temperature of the battery cell. vag The average temperature of the battery cell is ΔV. T This represents the cell temperature rise rate.

[0096] Step S502: Heat the battery according to the second cooling power, the second energy storage converter power and the first heating rate.

[0097] In this embodiment, a third correspondence is preset between the minimum cell temperature, the average cell temperature, the cell temperature rise rate, the second cooling power, the second energy storage converter power, and the first heating rate.

[0098] In this embodiment, for example, the third correspondence is shown in Table 3:

[0099] Table 3 Third Correspondence Relationship

[0100]

[0101]

[0102] In this embodiment, after obtaining the minimum cell temperature, average cell temperature, and cell temperature rise rate, a second cooling power, a second energy storage converter power, and a first heating rate that match the minimum cell temperature, average cell temperature, and cell temperature rise rate are obtained according to a third correspondence. Then, the second cooling power is sent to the chiller, which performs control processing according to the second cooling power, sends the second energy storage converter power to the energy storage converter, which performs control processing according to the first energy storage converter power, and sends the first heating rate to the heating device, which performs control processing according to the first heating rate.

[0103] In this embodiment, if the working mode is determined to be the heating mode, the second cooling power, the second energy storage converter power, and the first heating rate are obtained based on the lowest cell temperature, the average cell temperature, and the cell temperature rise rate. The battery is heated according to the second cooling power, the second energy storage converter power, and the first heating rate, so that the battery can be heated quickly when the battery temperature is too low, thereby ensuring the optimal performance of the battery.

[0104] Figure 6This is a flowchart illustrating a fifth embodiment of a battery temperature control method provided in this application. Based on the above embodiments, as follows... Figure 6 As shown, one specific implementation of step S301 is as follows:

[0105] Step S601: If it is determined that the inlet temperature of the liquid cooler is lower than the preset inlet temperature, then the working mode is determined to be the self-circulation mode.

[0106] In this embodiment, when it is determined that the inlet temperature of the liquid cooler is lower than the preset inlet temperature, the working mode is determined to be the self-circulation mode.

[0107] In this embodiment, for example, the preset inlet water temperature is 12 degrees Celsius.

[0108] The specific implementation of step S302 includes:

[0109] Step S602: Cool the battery according to the self-circulation mode.

[0110] In this embodiment, when the liquid chiller enters the self-circulation mode, the compressor and fan of the liquid chiller are turned off, the heating device is turned off, the power of the energy storage converter is 0.5P, and the water pump of the liquid chiller is turned on, so that the coolant circulates in the battery cold plate and the unit, carrying away the heat in the battery pack.

[0111] In this embodiment, if it is determined that the inlet temperature of the liquid cooler is lower than the preset inlet temperature, the working mode is determined to be the self-circulation mode; according to the self-circulation mode, the battery is cooled down to reduce energy consumption while maintaining the battery at a suitable temperature.

[0112] Figure 7 This is a flowchart illustrating a sixth embodiment of a battery temperature zone control method provided in this application. Based on the above embodiments, as... Figure 7 As shown, one specific implementation of step S301 is as follows:

[0113] Step S701: If it is determined that the humidity inside the energy storage cabinet is greater than the preset humidity, then the working mode is set to dehumidification mode.

[0114] In this embodiment, a humidity sensor is installed inside the energy storage cabinet to collect the humidity inside the cabinet, and when the humidity inside the cabinet is greater than the preset humidity, the working mode is switched to dehumidification mode.

[0115] In this embodiment, for example, the preset humidity is 70%.

[0116] The specific implementation of step S302 includes:

[0117] Step S702: Dehumidify the energy storage cabinet according to the dehumidification mode.

[0118] In this embodiment, the power of the energy storage converter is 0.5P in dehumidification mode.

[0119] In this embodiment, if it is determined that the humidity inside the energy storage cabinet is greater than the preset humidity, the working mode is determined to be the dehumidification mode; according to the dehumidification mode, the energy storage cabinet is dehumidified to avoid the problem of short circuit on the circuit board after condensation occurs inside the energy storage cabinet.

[0120] Figure 8 This is a flowchart illustrating a seventh embodiment of a battery temperature zone control method provided in this application. Based on the above embodiments, as... Figure 8 As shown, after step S203, the method further includes:

[0121] Step S801: Monitor the highest temperature of the battery cell.

[0122] In this embodiment, when controlling the temperature of the battery cell, it is necessary to monitor the cell temperature of multiple batteries in real time and obtain the highest cell temperature from the cell temperatures of multiple batteries.

[0123] Step S802: If it is determined that the highest temperature of the battery cell is greater than the preset battery cell temperature, an alarm message is sent to the maintenance personnel's terminal.

[0124] In this embodiment, if the temperature control system is unable to reduce the cell temperature after a battery malfunction, an alarm message needs to be sent to the maintenance personnel's terminal so that the maintenance personnel can troubleshoot the cell malfunction based on the alarm message.

[0125] In this embodiment, the highest temperature of the battery cell is monitored; if it is determined that the highest temperature of the battery cell is greater than the preset battery cell temperature, an alarm message is sent to the maintenance personnel's terminal, so that the fault can be eliminated in time and the normal operation of the energy storage cabinet can be guaranteed.

[0126] Furthermore, this application also provides a battery temperature zone control device.

[0127] Figure 9 This is a schematic diagram of a battery temperature zone control device according to an embodiment of this application. Figure 9As shown, the battery temperature zone control device in this embodiment mainly includes an acquisition module 21, an analysis module 22, and a processing module 23, wherein one or more of the above modules can be combined into a single module. In some embodiments, the acquisition module 21 can be configured to acquire the cell temperature of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet. The analysis module 22 can be configured to obtain the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate based on the cell temperatures of the multiple batteries. The processing module 23 can be configured to obtain temperature control information based on the highest cell temperature, the average cell temperature, the lowest cell temperature, the cell temperature rise rate, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, so that the temperature control device can control the cell temperature according to the temperature control information.

[0128] The aforementioned battery temperature zone control device is used to perform, for example Figure 2 The battery temperature zoning control method embodiments shown are similar in technical principle, the technical problems solved, and the technical effects produced. Those skilled in the art can clearly understand that, for the sake of convenience and brevity, the specific working process and related descriptions of the battery temperature zoning control device can be found in the embodiments of the battery temperature zoning control method with the battery temperature zoning control device as the executing subject, and will not be repeated here.

[0129] Those skilled in the art will understand that all or part of the processes in the method of the above-described embodiment can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium can include any entity or device capable of carrying the computer program code, a medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. It should be noted that the content included in the computer-readable storage medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable storage medium does not include electrical carrier signals and telecommunication signals.

[0130] Furthermore, this application also provides a battery temperature zone control device.

[0131] Figure 10 This is a schematic diagram of a battery temperature zone control device according to an embodiment of this application. Figure 10As shown, the battery temperature zone control device includes at least one processor 31 and a memory 32, the memory 32 being configurable to store the execution of the above-described... Figures 2 to 8 The program for the battery temperature zoning control method of the illustrated embodiment includes a processor 31 configured to execute a program stored in a memory 32. This program includes, but is not limited to, a program executing a battery temperature zoning control method according to the above-described method embodiment. For ease of explanation, only the parts relevant to the embodiments of this application are shown; for specific technical details not disclosed, please refer to the method section of the embodiments of this application. The battery temperature zoning control device can be a control device comprising various electronic devices.

[0132] Furthermore, this application also provides a computer-readable storage medium. In one embodiment of a computer-readable storage medium according to this application, the computer-readable storage medium can be configured to store the execution of the above-described method. Figures 2 to 8 The program for the battery temperature zoning control method of the illustrated embodiment can be loaded and run by a processor to implement the above-described battery temperature zoning control method. For ease of explanation, only the parts related to the embodiments of this application are shown; for specific technical details not disclosed, please refer to the method section of the embodiments of this application. The computer-readable storage medium can be a storage device device including various electronic devices. Optionally, in the embodiments of this application, the computer-readable storage medium is a non-transitory computer-readable storage medium.

[0133] Furthermore, it should be understood that since the various modules are only provided to illustrate the functional units of the device described in this application, the physical devices corresponding to these modules may be the processor itself, or a part of the processor's software, hardware, or a combination of both. Therefore, the number of modules shown in the figures is merely illustrative.

[0134] Those skilled in the art will understand that the various modules in the device can be adaptively split or combined. Such splitting or combining of specific modules will not cause the technical solution to deviate from the principles of this application; therefore, the technical solutions after splitting or combining will fall within the protection scope of this application.

[0135] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A battery temperature zone control method, characterized in that, include: The cell temperature of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet are obtained. Based on the cell temperatures of the multiple batteries, the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate are obtained. Temperature control information is obtained based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, so that the temperature control device can control the temperature of the battery cell according to the temperature control information.

2. The method according to claim 1, characterized in that, The process of obtaining temperature control information based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, for use by a temperature control device to control the temperature of the battery cell based on the temperature control information, includes: The operating mode is obtained based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet. Based on the operating mode, the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode are adjusted.

3. The method according to claim 2, characterized in that, The adjustment of the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode according to the operating mode includes: If the operating mode is determined to be the cooling mode, then the first cooling flow rate, the first cooling power, and the first energy storage converter power are obtained based on the highest temperature of the battery cell, the average temperature of the battery cell, and the temperature rise rate of the battery cell. The battery is cooled based on the first cooling flow rate, the first cooling power, and the first energy storage converter power.

4. The method according to claim 2, characterized in that, The adjustment process for the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode according to the operating mode further includes: If the working mode is determined to be the heating mode, then the second cooling power, the second energy storage converter power and the first heating rate are obtained based on the lowest temperature of the battery cell, the average temperature of the battery cell and the temperature rise rate of the battery cell. The battery is heated according to the second cooling power, the second energy storage converter power, and the first heating rate.

5. The method according to claim 2, characterized in that, The method of obtaining the operating mode based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet water temperature, or the internal humidity of the energy storage cabinet includes: If it is determined that the inlet temperature of the liquid cooler is lower than the preset inlet temperature, then the working mode is determined to be the self-circulation mode. The adjustment of the cooling flow rate, liquid chiller power, energy storage converter power, heating power, or liquid chiller mode according to the operating mode includes: According to the self-circulation mode, the battery is cooled down.

6. The method according to claim 2, characterized in that, The method of obtaining the operating mode based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet water temperature, or the internal humidity of the energy storage cabinet includes: If it is determined that the humidity inside the energy storage cabinet is greater than the preset humidity, then the working mode is determined to be dehumidification mode; According to the dehumidification mode, the energy storage cabinet is dehumidified.

7. The method according to claim 1, characterized in that, The method further includes: Monitor the highest temperature of the battery cell; If it is determined that the highest temperature of the battery cell is greater than the preset battery cell temperature, an alarm message is sent to the maintenance personnel's terminal.

8. A battery temperature zone control device, characterized in that, include: The acquisition module is used to acquire the cell temperature of multiple batteries, the inlet temperature of the liquid cooler, and the humidity inside the energy storage cabinet. The analysis module is used to obtain the highest cell temperature, the average cell temperature, the lowest cell temperature, and the cell temperature rise rate based on the cell temperatures of the multiple batteries. The processing module is used to obtain temperature control information based on the highest temperature of the battery cell, the average temperature of the battery cell, the lowest temperature of the battery cell, the temperature rise rate of the battery cell, the inlet temperature of the liquid cooler, or the humidity inside the energy storage cabinet, so that the temperature control device can control the temperature of the battery cell according to the temperature control information.

9. A battery temperature zone control device, comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to execute the method of any one of claims 1 to 7 through the computer program.

10. A computer-readable storage medium storing a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by a processor to perform the method of any one of claims 1 to 7.

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