Energy storage cabinet temperature intelligent adjustment control system, method and device and storage medium

Abstract

The invention discloses an energy storage cabinet temperature intelligent adjustment control system, which comprises a battery management system BMS, a liquid cooling unit controller TMS, a liquid cooling unit and an energy storage converter PCS, and is characterized in that the battery management system BMS further comprises a plurality of temperature sensors used for obtaining the battery cell temperature of a battery; the BMS judges that the battery is currently in a charging state, a discharging state or a standby state according to the output power of the PCS; and a corresponding instruction is sent to the liquid cooling unit controller TMS according to the cell temperature collected by the temperature sensor to control the liquid cooling unit to enter a heating mode, a refrigeration mode, a self-circulation mode or a shutdown mode, so that the temperature of the cell is ensured to be in an optimal state, the energy consumption of the energy storage system is reduced, and the energy consumption of the energy storage system is reduced. And the working efficiency and reliability of the energy storage system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage battery cabinets, and in particular to an energy storage cabinet temperature intelligent adjustment control system, method, device and storage medium. Background Art

[0002] The continuous charging or discharging (referred to as charging and discharging) of the energy storage battery module will generate heat and transfer it to other battery modules. Since the batteries in the energy storage system are closely arranged and the environment is relatively closed, the heat of the battery is more likely to accumulate, causing the temperature to gradually rise to an overheated state, triggering thermal abuse. At this time, the heat release inside the battery is greater, resulting in thermal runaway. In addition, when working at low temperatures, the capacity and operating voltage of the battery will be significantly reduced, and it can cause the generation of lithium dendrites and battery aging. Therefore, temperature management of energy storage battery clusters is critical to safety and life. Summary of the invention

[0003] The object of the present invention is to provide a temperature intelligent adjustment control system, method, device and storage medium for an energy storage cabinet, which can effectively solve the above-mentioned technical problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides an energy storage cabinet temperature intelligent adjustment and control system, including a battery management system BMS, a liquid cooling unit controller TMS, a liquid cooling unit and an energy storage converter PCS, wherein the battery management system BMS also includes a plurality of temperature sensors for obtaining the battery cell temperature, and the battery management system BMS determines whether the battery is currently in a charging state, a discharging state or a standby state according to the output power of the energy storage converter PCS, and sends a corresponding instruction to the liquid cooling unit controller TMS according to the battery cell temperature collected by the temperature sensor to control the liquid cooling unit to enter a heating mode, a cooling mode, a self-circulation mode or a shutdown mode, including:

[0005] If it is determined that the battery is currently in standby mode, when Tmin≤0°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the heating mode, and the set temperature of the liquid cooling unit is 25°C; and, after the liquid cooling unit enters the heating mode, when Tmin≥5°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein, when the output power of the energy storage converter PCS is less than 2kw for 5 seconds, it is determined that the battery is currently in standby mode, and Tmin is the lowest temperature of the battery cell;

[0006] If it is determined that the battery is currently in standby mode, when Tmax≥40°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein Tmax is the maximum temperature of the battery cell;

[0007] If it is determined that the battery is currently in a charging state or a discharging state, when Tmin≤12°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a heating mode, and the liquid cooling unit is set to a temperature of 20°C; and, after the liquid cooling unit enters the heating mode, when 15°C<Tmin≤30°C and T>3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode; when 15°C<Tmin≤30°C and T≤3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a shutdown mode; wherein, when the energy storage converter PCS outputs a discharge power ≥2kw for 5 seconds, it is determined that the battery is currently in a discharging state, and when the energy storage converter PCS outputs a charging power ≥2kw for 5 seconds, it is determined that the battery is currently in a charging state, and T is the temperature difference between the highest temperature and the lowest temperature of the battery cell;

[0008] If it is determined that the battery is currently in a charging state or a discharging state, when 30°C<Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode;

[0009] If it is determined that the battery is currently in a charging state or a discharging state, when 35°C<Tmax, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 15°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode.

[0010] As an improvement of the above solution, if it is determined that the battery is currently in standby mode and the liquid cooling unit enters the heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 5°C within the first time;

[0011] If it is determined that the battery is currently in standby mode and the liquid cooling unit enters cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 35° C. within the second time threshold;

[0012] If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters a heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 15° C. within a third time threshold;

[0013] If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 28°C within the fourth time threshold.

[0014] As an improvement of the above scheme, if it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the heating mode, when Tmin≤15°C and the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures is greater than 3°C, the difference obtained by subtracting the power difference from the heating power of the liquid cooling unit obtained based on the real-time collected lowest temperature Tmin of the battery cell is used as the target adjustment of the liquid cooling unit, wherein the power difference is proportional to the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures.

[0015] As an improvement of the above solution, if it is determined that the battery is currently in a standby state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the first time threshold, a liquid cooling unit heating mode fault is reported;

[0016] If it is determined that the battery is currently in the standby state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the second time threshold, a cooling mode fault of the liquid cooling unit is reported;

[0017] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the third time threshold, a heating mode fault of the liquid cooling unit is reported;

[0018] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the fourth time threshold, a heating mode failure of the liquid cooling unit is reported.

[0019] Another embodiment of the present invention provides a method for intelligently adjusting and controlling the temperature of an energy storage cabinet, wherein the energy storage cabinet includes a battery management system BMS, a liquid cooling unit controller TMS, a liquid cooling unit, and an energy storage converter PCS. The battery management system BMS also includes a plurality of temperature sensors for obtaining the battery cell temperature. The battery management system BMS determines whether the battery is currently in a charging state, a discharging state, or a standby state according to the output power of the energy storage converter PCS, and sends a corresponding instruction to the liquid cooling unit controller TMS according to the battery cell temperature collected by the temperature sensor to control the liquid cooling unit to enter a heating mode, a cooling mode, a self-circulation mode, or a shutdown mode. The method for intelligently adjusting and controlling the temperature of the energy storage cabinet includes the following steps:

[0020] S1. If it is determined that the battery is currently in standby mode, when Tmin≤0°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the heating mode, and the set temperature of the liquid cooling unit is 25°C; and, after the liquid cooling unit enters the heating mode, when Tmin≥5°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein, when the output power of the energy storage converter PCS is less than 2kw for 5 seconds, it is determined that the battery is currently in standby mode, and Tmin is the lowest temperature of the battery cell;

[0021] S2. If it is determined that the battery is currently in standby mode, when Tmax≥40°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein Tmax is the maximum temperature of the battery cell;

[0022] S3. If it is determined that the battery is currently in a charging state or a discharging state, when Tmin≤12°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a heating mode, and the liquid cooling unit is set to a temperature of 20°C; and, after the liquid cooling unit enters the heating mode, when 15°C<Tmin≤30°C and T>3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode; when 15°C<Tmin≤30°C and T≤3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a shutdown mode; wherein, when the energy storage converter PCS outputs a discharge power ≥2kw for 5 seconds, it is determined that the battery is currently in a discharging state, and when the energy storage converter PCS outputs a charging power ≥2kw for 5 seconds, it is determined that the battery is currently in a charging state, and T is the temperature difference between the highest temperature and the lowest temperature of the battery cell;

[0023] S4. If it is determined that the battery is currently in a charging state or a discharging state, when 30°C<Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode;

[0024] S5. If it is determined that the battery is currently in a charging state or a discharging state, when 35°C<Tmax, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 15°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode.

[0025] As an improvement of the above solution, if it is determined that the battery is currently in standby mode and the liquid cooling unit enters the heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 5°C within the first time;

[0026] If it is determined that the battery is currently in standby mode and the liquid cooling unit enters cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 35° C. within the second time threshold;

[0027] If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters a heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 15° C. within a third time threshold;

[0028] If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 28°C within the fourth time threshold.

[0029] As an improvement of the above scheme, if it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the heating mode, when Tmin≤15°C and the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures is greater than 3°C, the difference obtained by subtracting the power difference from the heating power of the liquid cooling unit obtained based on the real-time collected lowest temperature Tmin of the battery cell is used as the target adjustment of the liquid cooling unit, wherein the power difference is proportional to the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures.

[0030] As an improvement of the above solution, if it is determined that the battery is currently in a standby state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the first time threshold, a liquid cooling unit heating mode fault is reported;

[0031] If it is determined that the battery is currently in the standby state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the second time threshold, a cooling mode fault of the liquid cooling unit is reported;

[0032] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the third time threshold, a heating mode fault of the liquid cooling unit is reported;

[0033] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the fourth time threshold, a heating mode failure of the liquid cooling unit is reported.

[0034] Another embodiment of the present application discloses an electronic device, which includes a processor and a memory, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to execute the energy storage cabinet temperature intelligent adjustment control method as described in any of the above embodiments.

[0035] Another embodiment of the present application discloses a computer program product or a computer program, wherein the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the energy storage cabinet temperature intelligent adjustment control method described in any of the above embodiments.

[0036] Compared with the prior art, the energy storage cabinet temperature intelligent adjustment control system, method, device and storage medium provided in the embodiments of the present invention include a battery management system BMS, a liquid cooling unit controller TMS, a liquid cooling unit and an energy storage converter PCS. The battery management system BMS also includes multiple temperature sensors for obtaining the battery cell temperature. The battery management system BMS determines whether the battery is currently in a charging state, a discharging state or a standby state according to the output power of the energy storage converter PCS, and sends corresponding instructions to the liquid cooling unit controller TMS according to the battery cell temperature collected by the temperature sensor to control the liquid cooling unit to enter a heating mode, a cooling mode, a self-circulation mode or a shutdown mode, thereby ensuring that the temperature of the battery cell is in an optimal state, reducing the energy consumption of the energy storage system, and improving the working efficiency and reliability of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a structural block diagram of an energy storage cabinet temperature intelligent adjustment control system provided by an embodiment of the present invention.

[0039] Figure 2 It is a flow chart of a method for intelligently adjusting and controlling the temperature of an energy storage cabinet provided in an embodiment of the present invention.

[0040] Figure 3 Schematic diagram of the structure of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] refer to Figure 1 An embodiment of the present invention provides an energy storage cabinet temperature intelligent adjustment and control system, including a battery management system BMS101, a liquid cooling unit controller TMS102, a liquid cooling unit 103 and an energy storage converter PCS104. The battery management system BMS101 also includes a plurality of temperature sensors 1011 for obtaining the cell temperature of a battery 110. The battery management system BMS101 determines whether the battery 110 is currently in a charging state, a discharging state or a standby state according to the output power of the energy storage converter PCS104, and sends a corresponding instruction to the liquid cooling unit controller TMS102 according to the cell temperature collected by the temperature sensor 101 to control the liquid cooling unit 103 to enter a heating mode, a cooling mode, a self-circulation mode or a shutdown mode.

[0046] Specifically, if it is determined that the battery 110 is currently in standby mode, when Tmin≤0°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the heating mode, and the set temperature of the liquid cooling unit 103 is 25°C; and, after the liquid cooling unit enters the heating mode, when Tmin≥5°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the shutdown mode; wherein, when the output power of the energy storage inverter PCS104 is less than 2kw for 5 seconds, it is determined that the battery 110 is currently in standby mode, and Tmin is the lowest temperature of the battery cell.

[0047] If it is determined that the battery 110 is currently in standby mode, when Tmax≥40°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the cooling mode, and the set temperature of the liquid cooling unit 103 is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax≤35°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the shutdown mode; wherein Tmax is the maximum temperature of the battery cell.

[0048] If it is determined that the battery 110 is currently in a charging state or a discharging state, when Tmin≤12°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the heating mode, and the liquid cooling unit 103 is set to a temperature of 20°C; and after the liquid cooling unit 103 enters the heating mode, when 15°C<Tmin≤30°C and T>3°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 10 3 enters the self-circulation mode; when 15℃<Tmin≤30℃ and T≤3℃, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the shutdown mode; wherein, when the energy storage converter PCS104 outputs a discharge power ≥2kw for 5 seconds, it is judged that the battery 110 is currently in a discharge state, and when the energy storage converter PCS104 outputs a charging power ≥2kw for 5 seconds, it is judged that the battery 110 is currently in a charging state, and T is the temperature difference between the highest temperature and the lowest temperature of the battery cell.

[0049] If it is determined that the battery 110 is currently in a charging state or a discharging state, when 30°C<Tmax≤35°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter a cooling mode, and the set temperature of the liquid cooling unit 103 is 20°C; and, after the liquid cooling unit 103 enters the cooling mode, when Tmax<28°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter a self-circulation mode.

[0050] If it is determined that the battery 110 is currently in a charging state or a discharging state, when 35°C<Tmax, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the cooling mode, and the set temperature of the liquid cooling unit 103 is 15°C; and, after the liquid cooling unit 103 enters the cooling mode, when Tmax<28°C, the battery management system BMS101 sends an instruction to the liquid cooling unit controller TMS102 to control the liquid cooling unit 103 to enter the self-circulation mode.

[0051] It can be understood that the battery is composed of multiple battery PACK packages, each battery PACK package is composed of multiple battery cells, and in order to adopt the temperature of each battery cell, in an embodiment provided by the present invention, multiple temperature sampling points (temperature sensors) can be deployed in each battery PACK package based on the number of battery cells, and each sampling point corresponds to a battery cell. The battery management unit BMS can be used to obtain the temperature of all battery cells in the combined battery in real time.

[0052] Among them, the battery management system BMS101 determines whether the battery is currently in a charging state, a discharging state or a standby state according to the output power of the energy storage converter PCS104, and sends corresponding instructions to the liquid cooling unit controller TMS102 according to the battery cell temperature collected by the temperature sensor to control the liquid cooling unit 103 to enter the heating mode, the cooling mode, the self-circulation mode or the shutdown mode. When the liquid cooling unit 103 is in the heating mode and the cooling mode, the heat transfer medium is heated or cooled by the heating element or the cooling element. When heating or cooling, the outlet temperature of the liquid cooling unit is set to ensure that the outflowing heat transfer medium can achieve the ultimate purpose of heating or cooling. In addition, the self-circulation mode of the liquid cooling unit is that in the heat exchanger or heat exchange pipe of the liquid cooling unit, the current heat transfer medium is continuously circulated between the energy storage battery and the energy storage inverter through a motor or pump, and the temperature is lowered or raised through the residual temperature of the heat transfer medium, that is, the heat transfer medium is not thermally controlled, and only its circulation process is used to achieve temperature exchange with the heat-managed object. Since no cooling or heating is required, its energy consumption is relatively small. It can be seen that by utilizing the circulation mode of the liquid cooling unit, heat from high-temperature areas can also be transferred to low-temperature areas, saving energy, reducing energy consumption, and further reducing costs. When the liquid cooling unit is in shutdown mode, the liquid cooling unit does not consume energy.

[0053] Furthermore, in this embodiment, if it is determined that the battery 110 is currently in standby mode and the liquid cooling unit 103 enters the heating mode, the heating power of the liquid cooling unit is adjusted according to the real-time collected minimum temperature Tmin of the battery cell, so that the minimum temperature Tmin of the battery cell reaches 5°C within the first time.

[0054] If it is determined that the battery 110 is currently in standby mode and the liquid cooling unit 103 enters cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 35° C. within the second time threshold.

[0055] If it is determined that the battery 110 is currently in a charging state or a discharging state and the liquid cooling unit 103 enters a heating mode, the heating power of the liquid cooling unit is adjusted according to the real-time collected minimum temperature Tmin of the battery cell, so that the minimum temperature Tmin of the battery cell reaches 15°C within the third time threshold.

[0056] If it is determined that the battery 110 is currently in a charging state or a discharging state and the liquid cooling unit 103 enters the cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 28°C within the fourth time threshold.

[0057] It can be understood that the settings of the first time threshold, the second time threshold, the third time threshold, and the fourth time threshold can be set according to actual needs, and can be partially or completely set to be the same.

[0058] Furthermore, if it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the heating mode, when Tmin≤15°C and the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery core temperature is greater than 3°C, the difference obtained by subtracting the power difference from the heating power of the liquid cooling unit obtained based on the real-time collected lowest temperature Tmin of the battery core is used as the target adjustment of the liquid cooling unit, wherein the power difference is proportional to the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery core temperature. This implementation can effectively avoid the problem of excessive battery temperature difference when the battery is heated to prevent thermal runaway of the battery.

[0059] Furthermore, if it is determined that the battery is currently in a standby state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the first time threshold, a heating mode fault of the liquid cooling unit is reported.

[0060] If it is determined that the battery is currently in the standby state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the second time threshold, a cooling mode failure of the liquid cooling unit is reported.

[0061] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the third time threshold, a liquid cooling unit heating mode fault is reported.

[0062] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the fourth time threshold, a heating mode failure of the liquid cooling unit is reported.

[0063] This implementation can timely detect and report faults in the heating mode and cooling mode of the liquid cooling unit.

[0064] refer to Figure 2 The embodiment of the present invention provides a method for intelligently adjusting and controlling the temperature of an energy storage cabinet. The energy storage cabinet includes a battery management system BMS, a liquid cooling unit controller TMS, a liquid cooling unit and an energy storage converter PCS. The battery management system BMS also includes a plurality of temperature sensors for obtaining the battery cell temperature. The battery management system BMS determines whether the battery is currently in a charging state, a discharging state or a standby state according to the output power of the energy storage converter PCS, and sends a corresponding instruction to the liquid cooling unit controller TMS according to the battery cell temperature collected by the temperature sensor to control the liquid cooling unit to enter a heating mode, a cooling mode, a self-circulation mode or a shutdown mode. The method for intelligently adjusting and controlling the temperature of the energy storage cabinet includes the following steps:

[0065] S1. If it is determined that the battery is currently in standby mode, when Tmin≤0°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the heating mode, and the set temperature of the liquid cooling unit is 25°C; and, after the liquid cooling unit enters the heating mode, when Tmin≥5°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein, when the output power of the energy storage converter PCS is less than 2kw for 5 seconds, it is determined that the battery is currently in standby mode, and Tmin is the lowest temperature of the battery cell;

[0066] S2. If it is determined that the battery is currently in standby mode, when Tmax≥40°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein Tmax is the maximum temperature of the battery cell;

[0067] S3. If it is determined that the battery is currently in a charging state or a discharging state, when Tmin≤12°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a heating mode, and the liquid cooling unit is set to a temperature of 20°C; and, after the liquid cooling unit enters the heating mode, when 15°C<Tmin≤30°C and T>3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode; when 15°C<Tmin≤30°C and T≤3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a shutdown mode; wherein, when the energy storage converter PCS outputs a discharge power ≥2kw for 5 seconds, it is determined that the battery is currently in a discharging state, and when the energy storage converter PCS outputs a charging power ≥2kw for 5 seconds, it is determined that the battery is currently in a charging state, and T is the temperature difference between the highest temperature and the lowest temperature of the battery cell;

[0068] S4. If it is determined that the battery is currently in a charging state or a discharging state, when 30°C<Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode;

[0069] S5. If it is determined that the battery is currently in a charging state or a discharging state, when 35°C<Tmax, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 15°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode.

[0070] As an optional implementation, if it is determined that the battery is currently in standby mode and the liquid cooling unit enters the heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 5°C within the first time;

[0071] If it is determined that the battery is currently in standby mode and the liquid cooling unit enters cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 35° C. within the second time threshold;

[0072] If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters a heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 15° C. within a third time threshold;

[0073] If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 28°C within the fourth time threshold.

[0074] As an optional implementation, if it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters a heating mode, when Tmin≤15°C and the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures is greater than 3°C, the difference obtained by subtracting the power difference from the heating power of the liquid cooling unit obtained based on the real-time collected lowest temperature Tmin of the battery cell is used as the target adjustment of the liquid cooling unit, wherein the power difference is proportional to the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures.

[0075] As an optional implementation, if it is determined that the battery is currently in a standby state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the first time threshold, a liquid cooling unit heating mode fault is reported;

[0076] If it is determined that the battery is currently in the standby state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the second time threshold, a cooling mode fault of the liquid cooling unit is reported;

[0077] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the third time threshold, a heating mode fault of the liquid cooling unit is reported;

[0078] If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the fourth time threshold, a heating mode failure of the liquid cooling unit is reported.

[0079] like Figure 3 As shown, an embodiment of the present invention provides an electronic device 300, including a memory 310 and a processor 320, wherein the memory 310 is used to store one or more computer instructions, and the processor 320 is used to call and execute the one or more computer instructions, so as to implement any of the above-mentioned energy storage cabinet temperature intelligent adjustment control methods.

[0080] That is, the electronic device 300 includes: a processor 320 and a memory 310, in which computer program instructions are stored, wherein when the computer program instructions are executed by the processor, the processor 320 executes any of the above-mentioned energy storage cabinet temperature intelligent adjustment control methods.

[0081] Furthermore, if Figure 3 As shown, the electronic device 300 further includes a network interface 330 , an input device 340 , a hard disk 350 , and a display device 360 ​​.

[0082] The above-mentioned interfaces and devices can be interconnected through a bus architecture. The bus architecture can be a bus and bridge that can include any number of interconnected buses. Specifically, one or more central processing units (CPUs) represented by processor 320 and various circuits of one or more memories represented by memory 310 are connected together. The bus architecture can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits together. It can be understood that the bus architecture is used to achieve connection and communication between these components. In addition to the data bus, the bus architecture also includes a power bus, a control bus, and a status signal bus, which are all well known in the art, so they will not be described in detail herein.

[0083] The network interface 330 can be connected to a network (such as the Internet, a local area network, etc.), obtain relevant data from the network, and save it in the hard disk 350.

[0084] The input device 340 can receive various instructions input by the operator and send them to the processor 320 for execution. The input device 340 can include a keyboard or a pointing device (for example, a mouse, a trackball, a touch pad or a touch screen, etc.).

[0085] The display device 360 ​​can display the result obtained by the processor 320 executing the instruction.

[0086] The memory 310 is used to store programs and data necessary for the operation of the operating system, as well as data such as intermediate results during the calculation process of the processor 320.

[0087] It is understood that the memory 310 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. The memory 310 of the apparatus and method described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0088] In some implementations, the memory 310 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof: an operating system 311 and application programs 312 .

[0089] The operating system 311 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application 312 includes various application programs, such as a browser, etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present invention can be included in the application 312.

[0090] The processor 320, when calling and executing the application and data stored in the memory 310, specifically, the program or instruction stored in the application 312, if it is determined that the battery is currently in standby state, when Tmin≤0°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the heating mode, and the liquid cooling unit is set to a temperature of 25°C; and, after the liquid cooling unit enters the heating mode, when Tmin≥5°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein, when the output power of the energy storage converter PCS is less than 2 kw lasts for 5 seconds, it is judged that the battery is currently in standby state, and Tmin is the lowest temperature of the battery cell; if it is judged that the battery is currently in standby state, when Tmax≥40℃, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the cooling mode, and the set temperature of the liquid cooling unit is 20℃; and, after the liquid cooling unit enters the cooling mode, when Tmax≤35℃, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein Tmax is the highest temperature of the battery cell; if it is judged that the battery is currently in the charging state or the discharging state, when Tmin≤12℃, The battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the heating mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the heating mode, when 15°C<Tmin≤30°C and T>3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the self-circulation mode; when 15°C<Tmin≤30°C and T≤3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein, when the energy storage converter PCS outputs a discharge power ≥2kw for 5 seconds Determine whether the battery is currently in a discharging state. When the energy storage converter PCS outputs a charging power ≥ 2kw for 5 seconds, determine whether the battery is currently in a charging state, and T is the temperature difference between the highest temperature and the lowest temperature of the battery cell; if it is determined that the battery is currently in a charging state or a discharging state, when 30℃<Tmax≤35℃, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 20℃; and, after the liquid cooling unit enters the cooling mode, when Tmax<28℃, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode;If it is determined that the battery is currently in a charging state or a discharging state, when 35°C<Tmax, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the cooling mode, and the set temperature of the liquid cooling unit is 15°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the self-circulation mode. ;

[0091] The energy storage cabinet temperature intelligent adjustment control method disclosed in the above embodiment of the present invention can be applied to the processor 320, or implemented by the processor 320. The processor 320 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processor 320 or the instruction in the form of software. The above processor 320 can be a general processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a readily available programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present invention. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiment of the present invention can be directly embodied as a hardware decoding processor to be executed, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 310, and the processor 320 reads the information in the memory 310 and completes the steps of the above method in combination with its hardware.

[0092] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application or a combination thereof.

[0093] For software implementation, the techniques described herein can be implemented by modules (e.g., procedures, functions, etc.) that perform the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0094] Specifically, the processor 320 is further used to read the computer program and execute any of the above-mentioned energy storage cabinet temperature intelligent adjustment and control methods.

[0095] The present application also provides a computer-readable storage medium, which stores a computer program. The computer program includes program instructions. When the program instructions are executed by a processor, the processor executes the above method, such as executing the method executed by the above electronic device, which is not repeated here.

[0096] Optionally, the storage medium involved in the present application, such as computer-readable storage medium, may be non-volatile or volatile.

[0097] Optionally, the computer-readable storage medium may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function, etc.; the data storage area may store data created according to the use of blockchain nodes, etc. Among them, the blockchain referred to in this application is a new application mode of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm, etc. Blockchain is essentially a decentralized database, a string of data blocks generated by cryptographic methods, each of which contains a batch of network transaction information, which is used to verify the validity of its information (anti-counterfeiting) and generate the next block. The blockchain may include the underlying blockchain platform, the platform product service layer, and the application service layer.

[0098] It should be noted that, for the above-mentioned various method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0099] In the several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0100] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0101] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the sending and receiving method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (RandomAccess Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0102] The above disclosures are only some preferred embodiments of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention are still within the scope of the invention.

Claims

1. An intelligent temperature adjustment and control system for an energy storage cabinet, characterized in that: The system comprises a battery management system BMS, a liquid cooling unit controller TMS, a liquid cooling unit and an energy storage converter PCS. The battery management system BMS also comprises a plurality of temperature sensors for obtaining the battery cell temperature. The battery management system BMS determines whether the battery is currently in a charging state, a discharging state or a standby state according to the output power of the energy storage converter PCS, and sends a corresponding instruction to the liquid cooling unit controller TMS according to the battery cell temperature collected by the temperature sensor to control the liquid cooling unit to enter a heating mode, a cooling mode, a self-circulation mode or a shutdown mode, including: If it is determined that the battery is currently in standby mode, when Tmin≤0°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the heating mode, and the set temperature of the liquid cooling unit is 25°C; and, after the liquid cooling unit enters the heating mode, when Tmin≥5°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein, when the output power of the energy storage converter PCS is less than 2kw for 5 seconds, it is determined that the battery is currently in standby mode, and Tmin is the lowest temperature of the battery cell; If it is determined that the battery is currently in standby mode, when Tmax≥40°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein Tmax is the maximum temperature of the battery cell; If it is determined that the battery is currently in a charging state or a discharging state, when Tmin≤12°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a heating mode, and the liquid cooling unit is set to a temperature of 20°C; and, after the liquid cooling unit enters the heating mode, when 15°C<Tmin≤30°C and T>3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode; when 15°C<Tmin≤30°C and T≤3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a shutdown mode; wherein, when the energy storage converter PCS outputs a discharge power ≥2kw for 5 seconds, it is determined that the battery is currently in a discharging state, and when the energy storage converter PCS outputs a charging power ≥2kw for 5 seconds, it is determined that the battery is currently in a charging state, and T is the temperature difference between the highest temperature and the lowest temperature of the battery cell; If it is determined that the battery is currently in a charging state or a discharging state, when 30°C<Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode; If it is determined that the battery is currently in a charging state or a discharging state, when 35°C<Tmax, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 15°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode.

2. The energy storage cabinet temperature intelligent adjustment and control system according to claim 1 is characterized in that: If it is determined that the battery is currently in standby mode and the liquid cooling unit enters the heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 5°C within the first time; If it is determined that the battery is currently in standby mode and the liquid cooling unit enters cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 35° C. within the second time threshold; If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters a heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 15° C. within a third time threshold; If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 28°C within the fourth time threshold.

3. The energy storage cabinet temperature intelligent adjustment and control system according to claim 2 is characterized in that: If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the heating mode, when Tmin≤15°C and the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures is greater than 3°C, the difference obtained by subtracting the power difference from the heating power of the liquid cooling unit obtained based on the real-time collected lowest temperature Tmin of the battery cell is used as the target adjustment of the liquid cooling unit, wherein the power difference is proportional to the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures.

4. The energy storage cabinet temperature intelligent adjustment and control system according to claim 2 is characterized in that: If it is determined that the battery is currently in standby mode and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the first time threshold, a heating mode fault of the liquid cooling unit is reported; If it is determined that the battery is currently in the standby state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the second time threshold, a cooling mode fault of the liquid cooling unit is reported; If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the third time threshold, a heating mode fault of the liquid cooling unit is reported; If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the fourth time threshold, a heating mode failure of the liquid cooling unit is reported.

5. A method for intelligently adjusting and controlling the temperature of an energy storage cabinet, characterized in that: The energy storage cabinet includes a battery management system BMS, a liquid cooling unit controller TMS, a liquid cooling unit and an energy storage converter PCS. The battery management system BMS also includes a plurality of temperature sensors for obtaining the battery cell temperature. The battery management system BMS determines whether the battery is currently in a charging state, a discharging state or a standby state according to the output power of the energy storage converter PCS, and sends a corresponding instruction to the liquid cooling unit controller TMS according to the battery cell temperature collected by the temperature sensor to control the liquid cooling unit to enter a heating mode, a cooling mode, a self-circulation mode or a shutdown mode. The energy storage cabinet temperature intelligent adjustment control method includes the following steps: S1. If it is determined that the battery is currently in standby mode, when Tmin≤0°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the heating mode, and the set temperature of the liquid cooling unit is 25°C; and, after the liquid cooling unit enters the heating mode, when Tmin≥5°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein, when the output power of the energy storage converter PCS is less than 2kw for 5 seconds, it is determined that the battery is currently in standby mode, and Tmin is the lowest temperature of the battery cell; S2. If it is determined that the battery is currently in standby mode, when Tmax≥40°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter the shutdown mode; wherein Tmax is the maximum temperature of the battery cell; S3. If it is determined that the battery is currently in a charging state or a discharging state, when Tmin≤12°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a heating mode, and the liquid cooling unit is set to a temperature of 20°C; and, after the liquid cooling unit enters the heating mode, when 15°C<Tmin≤30°C and T>3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode; when 15°C<Tmin≤30°C and T≤3°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a shutdown mode; wherein, when the energy storage converter PCS outputs a discharge power ≥2kw for 5 seconds, it is determined that the battery is currently in a discharging state, and when the energy storage converter PCS outputs a charging power ≥2kw for 5 seconds, it is determined that the battery is currently in a charging state, and T is the temperature difference between the highest temperature and the lowest temperature of the battery cell; S4. If it is determined that the battery is currently in a charging state or a discharging state, when 30°C<Tmax≤35°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 20°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode; S5. If it is determined that the battery is currently in a charging state or a discharging state, when 35°C<Tmax, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a cooling mode, and the set temperature of the liquid cooling unit is 15°C; and, after the liquid cooling unit enters the cooling mode, when Tmax<28°C, the battery management system BMS sends an instruction to the liquid cooling unit controller TMS to control the liquid cooling unit to enter a self-circulation mode.

6. The energy storage cabinet temperature intelligent adjustment and control method according to claim 5 is characterized in that: If it is determined that the battery is currently in standby mode and the liquid cooling unit enters the heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 5°C within the first time; If it is determined that the battery is currently in standby mode and the liquid cooling unit enters cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 35° C. within the second time threshold; If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters a heating mode, the heating power of the liquid cooling unit is adjusted according to the lowest temperature Tmin of the battery cell collected in real time, so that the lowest temperature Tmin of the battery cell reaches 15° C. within a third time threshold; If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the cooling mode, the cooling power of the liquid cooling unit is adjusted according to the maximum temperature Tmax of the battery cell collected in real time, so that the maximum temperature Tmax of the battery cell reaches 28°C within the fourth time threshold.

7. The energy storage cabinet temperature intelligent adjustment and control method according to claim 6 is characterized in that: If it is determined that the battery is currently in a charging state or a discharging state and the liquid cooling unit enters the heating mode, when Tmin≤15°C and the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures is greater than 3°C, the difference obtained by subtracting the power difference from the heating power of the liquid cooling unit obtained based on the real-time collected lowest temperature Tmin of the battery cell is used as the target adjustment of the liquid cooling unit, wherein the power difference is proportional to the temperature difference T between the highest temperature and the lowest temperature in the real-time collected battery cell temperatures.

8. The energy storage cabinet temperature intelligent adjustment and control method according to claim 6 is characterized in that: If it is determined that the battery is currently in standby mode and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the first time threshold, a heating mode fault of the liquid cooling unit is reported; If it is determined that the battery is currently in the standby state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the second time threshold, a cooling mode fault of the liquid cooling unit is reported; If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the heating mode is equal to the third time threshold, a heating mode fault of the liquid cooling unit is reported; If it is determined that the battery is currently in a charging state or a discharging state and the continuous operation time of the liquid cooling unit after entering the cooling mode is equal to the fourth time threshold, a heating mode failure of the liquid cooling unit is reported.

9. An electronic device, characterized in that: It includes a processor and a memory, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the energy storage cabinet temperature intelligent adjustment control method according to any one of claims 5-8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which includes program instructions. When the program instructions are executed by a processor, the processor executes the energy storage cabinet temperature intelligent adjustment and control method according to any one of claims 5 to 8.

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