Temperature adjusting device, adaptive control method of temperature adjusting device, controller and energy storage system

Abstract

The invention relates to the technical field of battery pack temperature control, in particular to a temperature adjusting device and an adaptive control method thereof, a controller and an energy storage system.The temperature adjusting device is used for the energy storage system, the energy storage system comprises a battery pack and an energy storage converter electrically connected with the battery pack, and the temperature adjusting device comprises a first temperature adjusting mechanism and a second temperature adjusting mechanism; the control method comprises the steps of obtaining a working state of the energy storage converter; under the condition that the energy storage converter is in the starting state, the first temperature adjusting mechanism and the second temperature adjusting mechanism are controlled to be kept in the starting state; acquiring a first temperature of the battery pack and a second temperature of the energy storage converter in real time; a first temperature adjusting strategy of the first temperature adjusting mechanism is determined according to the first temperature, and the temperature of the battery pack is adjusted according to the first temperature adjusting strategy; and determining a second temperature regulation strategy of the second temperature regulation mechanism according to the second temperature, and regulating and controlling the temperature of the energy storage converter according to the second temperature regulation strategy. According to the method, the temperature of the energy storage system can be accurately adjusted, and the energy consumption of the temperature adjusting device can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack temperature control, and in particular to a temperature regulating device and an adaptive control method thereof, a controller, an energy storage system and a storage medium. Background Art

[0002] Since the energy storage system generates a lot of heat during the charging and discharging process, if the temperature control device cannot accurately control the temperature, it may cause the battery to overheat, thereby affecting the battery life and safety. The energy storage inverter also generates a lot of heat during the charging and discharging process. If the temperature control device cannot dissipate the heat accumulated in the energy storage inverter compartment in time, it may cause the energy storage inverter to overheat and shut down or even damage the equipment. If the heat dissipation capacity of the temperature control device is much greater than the heat generated by the energy storage system itself during operation, this will inevitably cause a certain amount of energy waste, affect the operating efficiency of the energy storage system, and is not in line with the concept of environmental protection. The current control strategy of the liquid cooling mechanism of the energy storage system mainly relies on the inlet temperature and return temperature of the liquid cooling unit for control. The current air cooling of the energy storage system mainly relies on reliable air duct design, reasonable design of air inlet and outlet (relying on cooling fans), and use of air convection to take away the heat.

[0003] The energy storage system temperature control device in the prior art has the following problems: in order to prevent the energy storage system from overheating, the liquid cooling mechanism and the air cooling temperature control mechanism are often in the rated operation state for a long time, resulting in large energy loss under standby conditions and low load conditions, which easily causes waste of resources. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a temperature control device and its adaptive control method, controller, energy storage system and storage medium to solve the technical problem of high energy loss in the temperature control device in the prior art.

[0005] In order to achieve the above-mentioned object, the first aspect of the present invention provides an adaptive control method of a temperature regulating device, the temperature regulating device is used in an energy storage system, the energy storage system includes a battery pack and an energy storage converter electrically connected to the battery pack, the temperature regulating device includes a first temperature regulating mechanism and a second temperature regulating mechanism, and the control method includes the following steps:

[0006] Obtain the working status of the energy storage converter;

[0007] When the energy storage converter is in the startup state, controlling the first temperature regulating mechanism and the second temperature regulating mechanism to maintain the startup state;

[0008] Acquire a first temperature of the battery pack and a second temperature of the energy storage converter in real time;

[0009] Determining a first temperature adjustment strategy of the first temperature adjustment mechanism according to the first temperature, and regulating the temperature of the battery pack according to the first temperature adjustment strategy;

[0010] A second temperature adjustment strategy of the second temperature adjustment mechanism is determined according to the second temperature, and the temperature of the energy storage converter is regulated according to the second temperature adjustment strategy.

[0011] In an embodiment of the present invention, the steps of determining a first temperature control strategy of a first temperature control mechanism according to a first temperature, and regulating the temperature of a battery pack according to the first temperature control strategy include: obtaining a maximum temperature and a minimum temperature of the battery pack in a preset temperature range; when the first temperature is greater than or equal to the maximum temperature, controlling the first temperature control mechanism to cool the battery pack; when the first temperature is less than or equal to the minimum temperature, controlling the first temperature control mechanism to heat the battery pack; when the first temperature is greater than the minimum temperature and less than the maximum temperature, controlling the first temperature control mechanism to maintain a standby state.

[0012] In an embodiment of the present invention, the first temperature control mechanism includes a first temperature control pipeline, a first storage container storing a first temperature control liquid, and a first liquid conveying component. The first temperature control pipeline is installed on the periphery of the battery pack. The first temperature control pipeline is a circulation pipeline and both ends are connected to the first storage container. The first liquid conveying component is arranged on the first temperature control pipeline and is used to pump the first temperature control liquid. When the first temperature is greater than or equal to the maximum temperature, the step of controlling the first temperature control mechanism to perform a cooling operation on the battery pack includes: determining a first difference between the first temperature and the maximum temperature; inputting the first difference into a PI control module to output a first temperature control power signal; and controlling the pumping power of the first liquid conveying component according to the first temperature control power signal to adjust the flow rate of the first temperature control liquid in the first temperature control pipeline.

[0013] In an embodiment of the present invention, the first temperature control mechanism includes a second temperature control pipeline, a second storage container storing a second temperature control liquid, and a second liquid conveying member. The second temperature control pipeline is installed on the periphery of the energy storage inverter. The second temperature control pipeline is a circulation pipeline and both ends are connected to the second storage container. The second liquid conveying member is arranged on the second temperature control pipeline and is used to pump the second temperature control liquid. When the first temperature is less than or equal to the minimum temperature, the step of controlling the first temperature control mechanism to perform a temperature increase operation on the battery pack includes: determining a second difference between the first temperature and the minimum temperature; inputting the second difference into the PI control module to output a second temperature adjustment signal; and controlling the pumping power of the second liquid conveying member according to the second temperature adjustment signal to adjust the flow rate of the second temperature control liquid in the second temperature control pipeline.

[0014] In an embodiment of the present invention, the second temperature control mechanism includes a fan assembly, and a second temperature control strategy of the second temperature control mechanism is determined according to the second temperature. The step of regulating the temperature of the energy storage inverter according to the second temperature control strategy includes: obtaining the high temperature alarm temperature and the normal operating temperature of the energy storage inverter; when the second temperature is greater than or equal to the high temperature alarm temperature, controlling the fan assembly to operate at a preset output power to reduce the temperature of the energy storage inverter; when the second temperature is greater than the normal operating temperature and less than the high temperature alarm temperature, controlling the fan assembly to maintain the current output power; when the second temperature is less than or equal to the normal operating temperature, controlling the fan assembly to shut down.

[0015] In an embodiment of the present invention, the energy storage system also includes a protective box for accommodating a battery pack and an energy storage inverter, the second temperature control mechanism also includes a ventilation component arranged on the protective box, and the second temperature control strategy of the second temperature control mechanism is determined according to the second temperature. The step of regulating the temperature of the energy storage inverter according to the second temperature control strategy includes: obtaining the high temperature alarm temperature and the normal operating temperature of the energy storage inverter; when the second temperature is greater than or equal to the high temperature alarm temperature, controlling the ventilation component to be in an open state to allow the circulation of air between the inside of the protective box and the outside world; when the second temperature is less than or equal to the normal operating temperature, controlling the ventilation component to be in a closed state to isolate the circulation of air between the inside of the protective box and the outside world; when the second temperature is greater than the normal operating temperature and less than the high temperature alarm temperature, controlling the ventilation component to maintain the current state.

[0016] A second aspect of the present invention provides a controller, comprising a memory storing instructions; and a processor configured to call the instructions from the memory and implement the above-mentioned adaptive control method of the temperature control device when executing the instructions.

[0017] The third aspect of the present invention provides a temperature control device, comprising: the above-mentioned controller; a first temperature control mechanism, comprising a first temperature control pipeline, a first storage container storing a first temperature control liquid and a first liquid conveying member, the first temperature control pipeline is installed on the periphery of the battery pack, the first temperature control pipeline is a circulation pipeline and both ends are connected to the first storage container, the first liquid conveying member is arranged on the first temperature control pipeline and is used to pump the first temperature control liquid, wherein the first temperature control liquid is a cooling liquid; and a second temperature control pipeline, a second storage container storing a second temperature control liquid and a second liquid conveying member, the second temperature control pipeline is installed on the periphery of the energy storage inverter, the second temperature control pipeline is a circulation pipeline and both ends are connected to the second storage container, the second liquid conveying member is arranged on the second temperature control pipeline and is used to pump the second temperature control liquid, wherein the second temperature control liquid is a heat transfer oil; a second temperature control mechanism, comprising a fan assembly, the fan assembly is arranged toward the energy storage inverter and is used to accelerate the air flow around the energy storage inverter.

[0018] A fourth aspect of the present invention provides an energy storage system, comprising: the above-mentioned temperature control device; a battery pack; and an energy storage inverter electrically connected to the battery pack.

[0019] A fifth aspect of the present invention provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the above-mentioned adaptive control method for a temperature control device.

[0020] In the above technical solution, an adaptive control method of a temperature regulating device is provided. The temperature regulating device is used in an energy storage system. The energy storage system includes a battery pack and an energy storage inverter. The temperature regulating device includes a first temperature regulating mechanism and a second temperature regulating mechanism. In the process of controlling the temperature regulating device, first, the working state of the energy storage inverter can be obtained. When the energy storage inverter is in the startup state, the battery pack is also in the startup state. When the energy storage inverter is in the standby state, the battery pack is also in the standby state. After the energy storage inverter is started, the first temperature regulating mechanism and the second temperature regulating mechanism can be controlled to start and adjust the first temperature of the battery pack and the second temperature of the energy storage inverter in real time, wherein the first temperature regulating mechanism can adjust the temperature of the battery pack, and the second temperature regulating mechanism can adjust the temperature of the energy storage inverter. The first temperature regulating strategy of the first temperature regulating mechanism can be determined according to the first temperature, and the second temperature regulating strategy of the second temperature regulating mechanism can be determined according to the second temperature. According to the first temperature control strategy and the second temperature control strategy, the temperature of the battery pack and the energy storage inverter are respectively regulated so that the battery pack and the energy storage inverter can operate at a suitable temperature to prevent the battery pack and the energy storage inverter from overheating or overcooling. In addition, the adaptive control method of the temperature control device provided in the embodiment of the present invention can adjust the temperature of the battery pack and the energy storage inverter with a suitable temperature control strategy, thereby reducing the power consumption of the temperature control device and saving energy.

[0021] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0023] Figure 1 A schematic diagram of a flow chart of an adaptive control method of a temperature regulating device according to an embodiment of the present invention is shown;

[0024] Figure 2 The figure is a temperature adjustment flow chart of the first temperature adjustment mechanism provided according to an embodiment of the present invention.

[0025] Figure 3 The figure is a temperature adjustment flow chart of the second temperature adjustment mechanism provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of the present invention are in compliance with the relevant provisions of national laws and regulations. In the embodiments of the present invention, some existing solutions in the industry such as certain software, components, and models may be mentioned, which should be considered as exemplary, and their purpose is only to illustrate the feasibility of the implementation of the technical solution of the present invention, but it does not mean that the applicant has or will necessarily use the solution.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their 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 at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] The temperature control device provided in an embodiment of the present invention includes a first temperature control mechanism and a second temperature control mechanism. The energy storage system includes a battery pack and an energy storage inverter. The first temperature control mechanism and the second temperature control mechanism of the temperature control device are used to perform temperature control operations on the battery pack and the energy storage inverter respectively. Figure 1 The following is a schematic flow chart of an adaptive control method for a temperature control device according to an embodiment of the present invention. Figure 1 As shown, an embodiment of the present invention provides an adaptive control method for a temperature control device, and the control method may include the following steps:

[0031] S101, obtaining the working status of the energy storage converter;

[0032] S102, when the energy storage converter is in the startup state, controlling the first temperature regulating mechanism and the second temperature regulating mechanism to remain in the startup state;

[0033] S103, acquiring a first temperature of the battery pack and a second temperature of the energy storage converter in real time;

[0034] S104, determining a first temperature adjustment strategy of a first temperature adjustment mechanism according to the first temperature, and regulating the temperature of the battery pack according to the first temperature adjustment strategy;

[0035] S105 . Determine a second temperature adjustment strategy of the second temperature adjustment mechanism according to the second temperature, and adjust the temperature of the energy storage converter according to the second temperature adjustment strategy.

[0036] The battery pack and energy storage converter in the energy storage system are prone to overheating during operation. High heat will not only make it difficult for the battery pack and energy storage converter to work normally, but also reduce the service life of the components in the battery pack and energy storage converter. An embodiment of the present invention provides a temperature control device, which includes a first temperature control mechanism and a second temperature control mechanism. The first temperature control mechanism and the second temperature control mechanism can respectively control the temperature of the battery pack and the energy storage converter so that the battery pack and the energy storage converter can work at a suitable temperature. The energy storage converter is used to control the energy conversion and output power of the battery pack. The control method provided in the embodiment of the present invention first obtains the working state of the energy storage converter. When the energy storage converter is in the standby state, the battery pack is also in the standby state; when the energy storage converter is in the startup state, the battery pack is also in the startup state. When the energy storage converter is in the startup state, the first temperature control mechanism and the second temperature control mechanism are controlled to start to control the temperature of the battery pack and the energy storage converter. The first temperature of the battery pack and the second temperature of the energy storage inverter are acquired in real time, and the first temperature control strategy of the first temperature control mechanism is determined according to the first temperature, and the second temperature control strategy of the second temperature control mechanism is determined according to the second temperature. The first temperature control mechanism and the second temperature control mechanism can be controlled respectively according to the first temperature control strategy and the second temperature control strategy to perform temperature control operations on the battery pack and the energy storage inverter respectively, so that the battery pack and the energy storage inverter can operate within a suitable range. The speed of temperature control is usually positively correlated with the output power of the temperature control mechanism. The embodiment of the present invention can adjust the temperature control strategies of the first temperature control mechanism and the second temperature control mechanism according to the first temperature and the second temperature, thereby adjusting the output power of the first temperature control mechanism and the second temperature control mechanism, which can reduce the energy loss of the first temperature control mechanism and the second temperature control mechanism, make the energy utilization rate higher, and save energy.

[0037] In one embodiment, the first temperature control strategy of the first temperature control mechanism is determined according to the first temperature, and the steps of regulating the temperature of the battery pack according to the first temperature control strategy include: obtaining the highest temperature and the lowest temperature of the battery pack in a preset temperature range; when the first temperature is greater than or equal to the highest temperature, controlling the first temperature control mechanism to cool the battery pack; when the first temperature is less than or equal to the lowest temperature, controlling the first temperature control mechanism to increase the temperature of the battery pack; when the first temperature is greater than the lowest temperature and less than the highest temperature, controlling the first temperature control mechanism to maintain a standby state. The battery pack can usually perform the work of storing and releasing energy in an optimal state within a preset temperature range. When the temperature of the battery pack exceeds the preset temperature range, the battery pack may have low working efficiency or fail to work normally. After determining the first temperature, the embodiment of the present invention can determine whether the first temperature is within the preset temperature range. When the first temperature of the battery pack is greater than the highest temperature in the preset temperature range, the first temperature regulating mechanism performs a cooling operation on the battery pack to reduce the temperature of the battery pack; when the first temperature of the battery pack is lower than the lowest temperature in the preset temperature range, the first temperature regulating mechanism performs a heating operation to increase the temperature of the battery pack; when the first temperature of the battery pack is within the preset temperature range, the first temperature regulating mechanism remains in a standby state and does not adjust the temperature of the battery pack. The above method can be used to adjust the temperature of the battery pack in a targeted manner so that the battery pack can operate within the preset temperature range, avoiding inefficient operation or shutdown of the battery pack in extreme temperature environments.

[0038] In a specific embodiment, Figure 2 As shown, it is a temperature control flow chart of the first temperature control mechanism provided according to an embodiment of the present invention. The battery pack has a battery cell, which is the main heat source in the battery pack, and the first temperature control mechanism is a liquid cooling unit. First, the working state of the PCS (energy storage inverter) is obtained. When the power of the energy storage inverter is zero, it is determined that both the battery cell and the energy storage inverter are not started, and the liquid cooling unit is turned off or the liquid cooling unit is controlled to self-circulate; when the battery cell temperature is less than T C_max (maximum temperature) and greater than T C_min (minimum temperature), turn off the liquid cooling unit or control the liquid cooling unit to self-circulate; when the cell temperature is greater than or equal to T C_max When the temperature of the battery cell is less than or equal to T C_min When the temperature of the battery cell is too low, the liquid cooling unit starts heating. By adopting the above control method, the heating and cooling of the liquid cooling unit can be controlled according to the temperature of the battery cell to ensure that the battery cell works within a suitable temperature range.

[0039] In one embodiment, the first temperature regulating mechanism includes a first temperature regulating pipeline, a first storage container storing a first temperature regulating liquid, and a first liquid conveying member. The first temperature regulating pipeline is installed on the periphery of the battery pack. The first temperature regulating pipeline is a circulation pipeline and both ends are connected to the first storage container. The first liquid conveying member is arranged on the first temperature regulating pipeline and is used to pump the first temperature regulating liquid. When the first temperature is greater than or equal to the maximum temperature, the step of controlling the first temperature regulating mechanism to perform a cooling operation on the battery pack includes: determining a first difference between the first temperature and the maximum temperature; inputting the first difference into a PI control module to output a first temperature regulating power signal; and controlling the pumping power of the first liquid conveying member according to the first temperature regulating power signal to adjust the flow rate of the first temperature regulating liquid in the first temperature regulating pipeline. The first temperature regulating pipeline can be arranged on the periphery of the battery pack. When a low-temperature liquid flows in the first temperature regulating pipeline, it can absorb the heat of the battery pack and cool the battery pack. The first liquid conveying member can convey the first temperature regulating liquid in the first storage container to the first temperature regulating pipeline to cool the battery pack. Among them, the flow rate of the first temperature-control liquid in the first temperature-control pipeline can determine the speed of the temperature control rate. When the battery pack needs to be cooled, the first difference between the first temperature and the highest temperature in the preset temperature range can be determined, and the first difference can be input into the PI control module, which can output a first temperature-control power signal. According to the first temperature-control power signal, the pumping efficiency of the first liquid conveying member can be controlled to adjust the flow rate of the first temperature-control liquid in the first temperature-control pipeline. Among them, the first temperature-control liquid can be selected as a coolant. By adopting the above-mentioned control method, the battery pack can be accurately temperature-controlled, and the speed of temperature control can be determined according to the first difference, so as to prevent the battery pack from cooling down too quickly, causing the temperature of the battery pack to be lower than the minimum temperature, and affecting the normal operation of the battery pack.

[0040] In one embodiment, the first temperature regulating mechanism includes a second temperature regulating pipeline, a second storage container storing a second temperature regulating liquid, and a second liquid conveying member, the second temperature regulating pipeline is installed on the periphery of the energy storage converter, the second temperature regulating pipeline is a circulation pipeline and both ends are connected to the second storage container, the second liquid conveying member is arranged on the second temperature regulating pipeline and is used to pump the second temperature regulating liquid, and when the first temperature is less than or equal to the minimum temperature, the step of controlling the first temperature regulating mechanism to perform a temperature increase operation on the battery pack includes: determining a second difference between the first temperature and the minimum temperature; inputting the second difference into the PI control module to output a second temperature adjustment signal; and controlling the pumping power of the second liquid conveying member according to the second temperature adjustment signal to adjust the flow rate of the second temperature regulating liquid in the second temperature regulating pipeline. The battery pack may be selected as a battery pack, and the second temperature regulating pipeline may be arranged on the periphery of the battery pack. When a high-temperature liquid flows in the second temperature regulating pipeline, heat can be transferred to the battery pack to increase the temperature of the battery pack. The second liquid conveying member can convey the second temperature regulating liquid in the second storage container to the second temperature regulating pipeline. Among them, the flow rate of the second temperature-control liquid in the second temperature-control pipeline can determine the speed of the temperature control rate. When the battery pack needs to be cooled down, the second difference between the second temperature and the lowest temperature in the preset temperature range can be determined, and the second difference can be input into the PI control module, and a second temperature-control power signal can be output. According to the second temperature-control power signal, the pumping efficiency of the second liquid conveying member can be controlled to adjust the flow rate of the second temperature-control liquid in the second temperature-control pipeline. Among them, the second temperature-control liquid can be selected as heat transfer oil. By adopting the above-mentioned control method, the battery pack can be accurately temperature-controlled, and the speed of temperature control can be determined according to the second difference, so as to prevent the battery pack from heating up too quickly, causing the temperature of the battery pack to be higher than the maximum temperature, and affecting the normal operation of the battery pack.

[0041] In one embodiment, the second temperature control mechanism includes a fan assembly, and a second temperature control strategy of the second temperature control mechanism is determined according to the second temperature. The step of regulating the temperature of the energy storage inverter according to the second temperature control strategy includes: obtaining the high temperature alarm temperature and the normal operating temperature of the energy storage inverter; when the second temperature is greater than or equal to the high temperature alarm temperature, controlling the fan assembly to operate at a preset output power to reduce the temperature of the energy storage inverter; when the second temperature is greater than the normal operating temperature and less than the high temperature alarm temperature, controlling the fan assembly to maintain the current output power; when the second temperature is less than or equal to the normal operating temperature, controlling the fan assembly to shut down.

[0042] The energy storage inverter is a key control element for the battery pack to perform energy storage or energy supply. The energy storage inverter will generate heat during operation, and a second temperature control mechanism is required to dissipate the heat of the energy storage inverter. The rotation of the fan assembly can accelerate the air circulation near the energy storage inverter to accelerate the heat dissipation of the energy storage inverter. In the embodiment of the present invention, the high temperature alarm temperature and the normal operating temperature of the energy storage inverter can be obtained. When the second temperature is higher than or equal to the high temperature alarm temperature, the fan assembly is controlled to operate according to the preset output power to accelerate the air circulation near the energy storage inverter; when the second temperature is less than or equal to the normal operating temperature, the fan assembly is controlled to shut down to save energy; when the second temperature is greater than the normal temperature and less than the high temperature alarm temperature, the fan assembly is controlled to maintain the current working state. Because the energy storage inverter generates a lot of heat when it is running at high load, the fan assembly is often required to run continuously to ensure that the energy storage inverter is lower than the high temperature alarm temperature to achieve a dynamic temperature balance. By adopting the above control method, the start or shut down of the fan assembly can be specifically controlled according to the current temperature state of the energy storage inverter. When the energy storage inverter is under low load or the temperature is low, the fan assembly does not need to run continuously, which saves energy and reduces energy loss.

[0043] In a specific embodiment, Figure 3 , which is a temperature control flow chart of the second temperature control mechanism provided according to an embodiment of the present invention. The second temperature control mechanism includes a cooling fan. First, the working state of the PCS (energy storage converter) is obtained. When the power of the energy storage converter is zero, it is determined that both the battery cell and the energy storage converter are not started, and the cooling fan is turned off. When the module temperature of the energy storage converter is greater than or equal to T p_max (high temperature alarm temperature), start the cooling fan; when the module temperature of the energy storage converter is less than T p_max and greater than T p_min (normal operating temperature), the cooling fan is controlled to maintain the current working state; when the module temperature of the energy storage converter is less than or equal to T p_min By adopting the above control method, the cooling fan can be controlled in a targeted manner according to the working state and module temperature of the energy storage converter to prevent the energy storage converter from overheating.

[0044] In one embodiment, the energy storage system also includes a protective box for accommodating a battery pack and an energy storage inverter, the second temperature control mechanism also includes a ventilation assembly provided on the protective box, and the second temperature control strategy of the second temperature control mechanism is determined according to the second temperature. The step of regulating the temperature of the energy storage inverter according to the second temperature control strategy includes: obtaining the high temperature alarm temperature and the normal operating temperature of the energy storage inverter; when the second temperature is greater than or equal to the high temperature alarm temperature, controlling the ventilation assembly to be in an open state to allow the circulation of air between the inside of the protective box and the outside world; when the second temperature is less than or equal to the normal operating temperature, controlling the ventilation assembly to be in a closed state to isolate the circulation of air between the inside of the protective box and the outside world; when the second temperature is greater than the normal operating temperature and less than the high temperature alarm temperature, controlling the ventilation assembly to maintain the current state.

[0045] The protective box can be used to accommodate the battery pack and the energy storage inverter to prevent the battery pack and the energy storage inverter from being corroded by the outside. The ventilation component includes an open and closed state. When the ventilation component is open, the outside of the protective box can achieve air circulation with the inside of the protective box, thereby accelerating the heat dissipation of the energy storage inverter; when the ventilation component is closed, the outside of the protective box and the inside of the protective box are spaced apart from each other, and the heat dissipation of the energy storage inverter is slow. In an embodiment of the present invention, when the second temperature is greater than or equal to the high temperature alarm temperature, the ventilation component can be controlled to be in an open state to accelerate the air circulation near the energy storage inverter and accelerate the heat dissipation of the energy storage inverter; when the second temperature is less than or equal to the normal operating temperature, the temperature of the energy storage inverter is low, and there is no need to accelerate the heat dissipation. The ventilation component can be closed so that the protective box can better protect the battery pack and the energy storage inverter. When the second temperature is greater than the normal operating temperature and less than the high temperature alarm temperature, the ventilation component can be controlled to maintain the current working state to keep the temperature of the energy storage inverter stable. By adopting the above control method, the start or shut down of the ventilation component can be specifically controlled according to the current temperature state of the energy storage inverter, so that the temperature of the energy storage inverter is lower than the high temperature alarm temperature, thereby extending the service life of the energy storage inverter.

[0046] An embodiment of the present invention provides a controller, comprising: a memory configured to store instructions; and a processor configured to call instructions from the memory and implement the above-mentioned adaptive control method of the temperature control device when executing the instructions.

[0047] An embodiment of the present invention further provides a machine-readable storage medium, on which instructions are stored, and the instructions are used to enable a machine to execute the above-mentioned adaptive control method of the temperature control device.

[0048] In one embodiment, a temperature control device is provided, comprising: the above-mentioned controller; a first temperature control mechanism, comprising a first temperature control pipeline, a first storage container storing a first temperature control liquid, and a first liquid conveying member, the first temperature control pipeline is installed on the periphery of the battery pack, the first temperature control pipeline is a circulation pipeline and both ends are connected to the first storage container, the first liquid conveying member is arranged on the first temperature control pipeline and is used to pump the first temperature control liquid, wherein the first temperature control liquid is a cooling liquid; and a second temperature control pipeline, a second storage container storing a second temperature control liquid, and a second liquid conveying member, the second temperature control pipeline is installed on the periphery of the energy storage inverter, the second temperature control pipeline is a circulation pipeline and both ends are connected to the second storage container, the second liquid conveying member is arranged on the second temperature control pipeline and is used to pump the second temperature control liquid, wherein the second temperature control liquid is a heat transfer oil; a second temperature control mechanism, comprising a fan assembly, the fan assembly is arranged toward the energy storage inverter and is used to accelerate the air flow around the energy storage inverter.

[0049] In one embodiment, an energy storage system is provided, comprising: the above-mentioned temperature control device; a battery pack; and an energy storage inverter electrically connected to the battery pack.

[0050] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0051] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0052] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0053] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0054] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0055] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0056] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0057] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0058] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An adaptive control method for a temperature control device, characterized in that: The temperature regulating device is used for an energy storage system, the energy storage system includes a battery pack and an energy storage converter electrically connected to the battery pack, the temperature regulating device includes a first temperature regulating mechanism and a second temperature regulating mechanism, and the control method includes the following steps: Obtaining the working state of the energy storage converter; When the energy storage converter is in a startup state, controlling the first temperature regulating mechanism and the second temperature regulating mechanism to remain in a startup state; Acquiring a first temperature of the battery pack and a second temperature of the energy storage converter in real time; Determining a first temperature adjustment strategy of the first temperature adjustment mechanism according to the first temperature, and regulating the temperature of the battery pack according to the first temperature adjustment strategy; A second temperature adjustment strategy of the second temperature adjustment mechanism is determined according to the second temperature, and the temperature of the energy storage converter is regulated according to the second temperature adjustment strategy.

2. The adaptive control method of a temperature control device according to claim 1, characterized in that: The step of determining a first temperature adjustment strategy of the first temperature adjustment mechanism according to the first temperature, and regulating the temperature of the battery pack according to the first temperature adjustment strategy includes: Obtaining the maximum temperature and the minimum temperature of the battery pack within a preset temperature range; When the first temperature is greater than or equal to the maximum temperature, controlling the first temperature regulating mechanism to perform a cooling operation on the battery pack; When the first temperature is less than or equal to the minimum temperature, controlling the first temperature regulating mechanism to perform a temperature increasing operation on the battery pack; When the first temperature is greater than the minimum temperature and less than the maximum temperature, the first temperature adjustment mechanism is controlled to maintain a standby state.

3. The adaptive control method of a temperature control device according to claim 2, characterized in that: The first temperature regulating mechanism includes a first temperature regulating pipeline, a first storage container storing a first temperature regulating liquid, and a first liquid conveying member, the first temperature regulating pipeline is installed on the periphery of the battery pack, the first temperature regulating pipeline is a circulation pipeline and both ends are connected to the first storage container, the first liquid conveying member is arranged on the first temperature regulating pipeline and is used to pump the first temperature regulating liquid, and the step of controlling the first temperature regulating mechanism to perform a cooling operation on the battery pack when the first temperature is greater than or equal to the maximum temperature includes: determining a first difference between the first temperature and the maximum temperature; Inputting the first difference into a PI control module to output a first temperature adjustment power signal; The pumping power of the first liquid conveying member is controlled according to the first temperature control power signal to adjust the flow rate of the first temperature control liquid in the first temperature control pipeline.

4. The adaptive control method of a temperature control device according to claim 2, characterized in that: The first temperature regulating mechanism includes a second temperature regulating pipeline, a second storage container storing a second temperature regulating liquid, and a second liquid conveying member, the second temperature regulating pipeline is installed on the periphery of the energy storage converter, the second temperature regulating pipeline is a circulation pipeline and both ends are connected to the second storage container, the second liquid conveying member is provided on the second temperature regulating pipeline and is used to pump the second temperature regulating liquid, and the step of controlling the first temperature regulating mechanism to perform a temperature increasing operation on the battery pack when the first temperature is less than or equal to the minimum temperature includes: determining a second difference between the first temperature and the minimum temperature; Inputting the second difference into a PI control module to output a second temperature adjustment signal; The pumping power of the second liquid conveying member is controlled according to the second temperature adjustment signal to adjust the flow rate of the second temperature adjustment liquid in the second temperature adjustment pipeline.

5. The adaptive control method of a temperature control device according to claim 1, characterized in that: The second temperature control mechanism includes a fan assembly, and a second temperature control strategy of the second temperature control mechanism is determined according to the second temperature. The step of regulating the temperature of the energy storage converter according to the second temperature control strategy includes: Obtaining a high temperature alarm temperature and a normal operating temperature of the energy storage converter; When the second temperature is greater than or equal to the high temperature alarm temperature, controlling the fan assembly to operate at a preset output power to reduce the temperature of the energy storage converter; When the second temperature is greater than the normal operating temperature and less than the high temperature alarm temperature, controlling the fan assembly to maintain the current output power operation; When the second temperature is less than or equal to the normal operating temperature, the fan assembly is controlled to be turned off.

6. The adaptive control method of a temperature control device according to claim 1, characterized in that: The energy storage system further includes a protection box for accommodating the battery pack and the energy storage converter, the second temperature control mechanism further includes a ventilation assembly provided on the protection box, and the second temperature control strategy of the second temperature control mechanism is determined according to the second temperature, and the step of regulating the temperature of the energy storage converter according to the second temperature control strategy includes: Obtaining a high temperature alarm temperature and a normal operating temperature of the energy storage converter; When the second temperature is greater than or equal to the high temperature alarm temperature, the ventilation component is controlled to be in an open state to allow the inside of the protection box to circulate with the outside air; When the second temperature is less than or equal to the normal operating temperature, the ventilation component is controlled to be in a closed state to isolate the circulation of the inside of the protection box from the outside air; When the second temperature is greater than the normal operating temperature and less than the high temperature alarm temperature, the ventilation component is controlled to maintain a current state.

7. A controller, characterized in that: include: A memory storing instructions; as well as A processor is configured to call the instruction from the memory and implement the adaptive control method of the temperature regulating device according to any one of claims 1 to 6 when executing the instruction.

8. A temperature control device, characterized in that: include: The controller according to claim 7; A first temperature regulating mechanism, comprising a first temperature regulating pipeline, a first storage container storing a first temperature regulating liquid, and a first liquid conveying member, wherein the first temperature regulating pipeline is installed on the periphery of the battery pack, the first temperature regulating pipeline is a circulation pipeline and both ends are connected to the first storage container, the first liquid conveying member is arranged on the first temperature regulating pipeline and is used to pump the first temperature regulating liquid, wherein the first temperature regulating liquid is a cooling liquid; and a second temperature regulating pipeline, a second storage container storing a second temperature regulating liquid, and a second liquid conveying member, wherein the second temperature regulating pipeline is installed on the periphery of the energy storage converter, the second temperature regulating pipeline is a circulation pipeline and both ends are connected to the second storage container, the second liquid conveying member is arranged on the second temperature regulating pipeline and is used to pump the second temperature regulating liquid, wherein the second temperature regulating liquid is a heat transfer oil; The second temperature adjustment mechanism includes a fan assembly, which is arranged toward the energy storage inverter and is used to accelerate the air flow around the energy storage inverter.

9. An energy storage system, characterized in that: include: The temperature control device according to claim 8; Battery pack; An energy storage converter is electrically connected to the battery pack.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions, which are used to enable a machine to execute the adaptive control method of a temperature regulating device according to any one of claims 1 to 6.

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