An energy storage battery heating system, method, apparatus, device, and storage medium

Abstract

The application discloses an energy storage battery heating system, method, device, equipment and storage medium, and belongs to the technical field of energy storage, and comprises a conductive heating unit, a BMS and an EMS. The BMS is used for monitoring the temperature of a battery module and judging whether the battery module has a condition of electrifying a heat conduction assembly, sending a heating request to the EMS when the heating demand is met, and feeding back a judgment result through a corresponding type of message. The BMS receives a heating instruction issued by the EMS to control the first switch module and the second switch module to be closed, so as to form a heating loop in which the heat conduction assembly is electrified by a power supply system or the battery module. The EMS is used for receiving the heating request and the corresponding type of message sent by the BMS, determining to issue the heating instruction to the BMS when the heat conduction assembly is allowed to be turned on according to the corresponding type of message and the power supply state of the power supply system. The energy storage battery can still normally operate under the condition of ultralow temperature or low temperature, and the back-end load can normally work all day long.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage battery heating system, method, apparatus, equipment and storage medium. Background Technology

[0002] With the advancement of technology, our lives are becoming increasingly reliant on electricity. The continuous increase in electricity consumption, coupled with concentrated periods of use, has led to power shortages. Furthermore, the generally higher electricity prices during peak hours result in higher overall electricity costs. Therefore, energy storage systems are gradually becoming a trend. These systems store electricity during off-peak hours and release it during peak hours, alleviating power pressure and saving on electricity expenses. Energy storage batteries are a crucial component of these systems, primarily used for storing and releasing electrical energy.

[0003] Currently, for energy storage systems used in harsh conditions, high altitudes, and extremely low temperatures, especially in scenarios exceeding the minimum operating temperature of the battery, the inability of the energy storage battery to discharge when the temperature exceeds the minimum operating temperature, or the discharge of the energy storage battery at low temperatures, will affect the battery safety and lifespan, thus failing to guarantee the normal operation of critical back-end loads around the clock, causing losses to users.

[0004] Therefore, how to ensure that energy storage batteries can still operate normally under ultra-low temperature or low temperature conditions, so that critical back-end loads can work normally around the clock, is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides an energy storage battery heating system, method, apparatus, equipment, and storage medium to ensure that the energy storage battery can still operate normally under ultra-low temperature or low temperature conditions, enabling critical back-end loads to operate normally around the clock.

[0006] In a first aspect, embodiments of this application provide an energy storage battery heating system for heating battery modules within a battery system, comprising: The conductive heating unit includes a heat-conducting component and a first switch module connected in series in the first branch. The heat-conducting component heats the battery module when it is conductive. The first branch and the second branch where the battery module is located are connected in parallel and then connected to the power supply system through the second switch module. The Battery Management System (BMS) is used to monitor the temperature of the battery module and determine whether the battery module has the conditions to power the heat conduction component. When the heating requirement is met, it sends a heating request to the Energy Management System (EMS) and feeds back the judgment result through a corresponding type of message. It receives the heating command issued by the EMS and controls the first switch module and the second switch module to close, forming a heating circuit in which the power supply system or the battery module conducts electricity to the heat conduction component. The EMS is used to receive heating requests and corresponding messages sent by the BMS, and when it is determined that the heat-conducting component can be turned on according to the corresponding message type and the power supply status of the power supply system, it sends a heating command to the BMS.

[0007] In some embodiments, the second switching module is also connected to a load; Specifically, the BMS is used to control the first switch module and the second switch module to close when the power supply system is in the energized state after receiving the heating command issued by the EMS, thereby forming a heating circuit in which the power supply system conducts electricity to the heat-conducting components and a charging circuit in which the power supply system charges the battery module. Specifically, after receiving a heating command from the EMS, the BMS controls the first switch module and the second switch module to close when it determines that the battery module has the conditions to power the heat-conducting component and the power supply system is in a power-off state, thereby forming a heating circuit in which the battery module conducts electricity to the heat-conducting component and a power supply circuit in which the battery module supplies power to the load.

[0008] In some embodiments, it also includes: A liquid heating circuit, a liquid storage device, and a heat conduction device, wherein the liquid heating circuit includes a liquid heat conduction pipeline, a circulation power device, and a heating device; The liquid outlet of the liquid heat conduction pipeline, the circulation power device, the heating device, and the liquid inlet of the liquid heat conduction pipeline are connected in sequence to form a loop. The heating device starts heating after receiving the heating command from the EMS. The liquid heat conduction pipeline is connected to the battery module through the heat conduction device, and the liquid storage device is connected to the circulation power device to provide liquid to the liquid heating circuit, and the liquid circulates in the liquid heating circuit. The EMS is also used to determine, based on the output power of the power supply system or battery module currently conducting electricity to the heat-conducting component, that the liquid heating conditions are met, and then issue a heating command to the heating device.

[0009] In some embodiments, the BMS is further configured to send a heating stop request to the EMS when it detects that the temperature of the battery module is not lower than a third threshold and the heat-conducting component is powered on. The EMS is also used to receive the heating stop request sent by the BMS, send a heating prohibition command to the BMS, and send a heating prohibition command to the heating device when the heating device is in the start state; The BMS is also used to receive the heating prohibition command sent by the EMS and control the first switch module to disconnect. The heating device is also used to receive a heating prohibition command sent by the EMS and turn off the heating.

[0010] Secondly, embodiments of this application provide a method for heating an energy storage battery, applied to an EMS, comprising: The system receives a heating request sent by the battery management system (BMS) when it determines that the heating requirements are met, and the BMS also receives a judgment result from the corresponding type of message indicating whether the battery module has the conditions to power on the heat-conducting components. When it is determined that the heat-conducting component is allowed to be turned on according to the corresponding type of message and the power supply status of the power supply system, a heating command is sent to the BMS to instruct the BMS to control the first switch module and the second switch module of the conductive heating unit to close, forming a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting component.

[0011] In some embodiments, the power supply state of the power supply system includes a power-on state and a power-off state. The message includes a discharge permission message corresponding to the battery module having the conditions to power on the heat-conducting component, and a discharge prohibition message corresponding to the battery module not having the conditions to power on the heat-conducting component. Determining whether to allow the heat-conducting component to be powered on based on the corresponding message type and the power supply state of the power supply system includes: Upon receiving the heating request and determining that the power supply status is energized, it is determined that the heat-conducting component should be allowed to conduct; or Upon receiving the heating request, determining that the power supply status is off, and receiving a discharge permission message, it is determined that the heat-conducting component can be turned on.

[0012] In some embodiments, it also includes: Based on the output power of the power supply system or battery module that is currently conducting electricity to the heat-conducting component, when it is determined that the liquid heating conditions are met, a heating command is issued to the heating device in the liquid heating circuit.

[0013] In some embodiments, determining that the liquid heating conditions are met includes: Upon receiving a heating request from the BMS, if the power supply is on and the output power of the power supply system simultaneously meets the power requirements of both the heat-conducting component and the heating device, then the liquid heating conditions are determined to be met; or Upon receiving a heating request from the BMS, if the power supply is in a power-off state and a discharge permission message is received, and the output power of the battery module simultaneously meets the power requirements of the heat-conducting component and the heating device, then the liquid heating conditions are determined to be met.

[0014] In some embodiments, it also includes: The system receives the heating stop request sent by the BMS, sends a heating prohibition command to the BMS, and sends a heating prohibition command to the heating device when the heating device is in the start state.

[0015] Thirdly, embodiments of this application provide a method for heating an energy storage battery, applied to a BMS, comprising: Monitor the temperature of the battery module and determine whether the battery module has the conditions to power the heat-conducting components; When the heating demand is met, a heating request is sent to the Energy Management System (EMS), and the judgment result is fed back through the corresponding type of message. Receive the heating command issued by the EMS when it determines whether the heat-conducting component can be turned on based on the corresponding message type and the power supply status of the power supply system; The first and second switch modules of the conductive heating unit are closed to form a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting components.

[0016] In some embodiments, the judgment result is returned by the corresponding type of message, including: When it is determined that the battery module meets the conditions for energizing the heat-conducting components, a discharge permission message is sent back to the EMS. If it is determined that the battery module does not meet the conditions for powering the heat-conducting components, a discharge prohibition message is sent back to the EMS.

[0017] In some embodiments, determining whether the battery module meets the conditions for energizing the heat-conducting components includes: When the battery module temperature is determined to be below a first threshold, or when the battery module temperature is determined to be not below the first threshold but below a second threshold, and the output power of the battery module is lower than the power of the heat-conducting component, it is determined that the battery module does not have the condition to power the heat-conducting component; or When it is determined that the temperature of the battery module is not lower than the first threshold and is lower than the second threshold, and the output power of the battery module is not lower than the power of the heat-conducting component, it is determined that the battery module has the condition to power on the heat-conducting component.

[0018] In some embodiments, determining that the heating requirement is met includes: When the temperature of the battery module is detected to be below the second threshold, it is determined that the heating requirement is met; or When the temperature of the battery module is detected to be not lower than the second threshold and lower than the third threshold, and the heat-conducting component is powered on, it is determined that the heating requirement is met.

[0019] In some embodiments, the second switching module is also connected to a load, controlling the first and second switching modules of the conductive heating unit to close, forming a heating circuit where the power supply system or battery module conducts electricity to the heat-conducting components, including: If the power supply state is energized, the first switch module and the second switch module are controlled to close, forming a heating circuit where the power supply system conducts electricity to the heat-conducting components and a charging circuit where the power supply system charges the battery module; or If it is determined that the battery module has the conditions to power the heat-conducting component and the power supply status is off, the first switch module and the second switch module are controlled to close, forming a heating circuit in which the battery module conducts electricity to the heat-conducting component and a power supply circuit in which the battery module supplies power to the load.

[0020] In some embodiments, it also includes: When the temperature of the battery module is detected to be no lower than the third threshold and the heat conduction component is powered on, a heating stop request is sent to the EMS. Upon receiving the heating prohibition command sent by the EMS, the first switch module is controlled to disconnect.

[0021] Fourthly, embodiments of this application provide a heating device for an energy storage battery, comprising: The receiving device is used to receive a heating request sent by the battery management system (BMS) when it determines that the heating requirement is met, and the judgment result of the BMS through a corresponding type of message on whether the battery module has the conditions to power on the heat conduction component. The transmitting device is used to send a heating command to the BMS when it is determined that the heat conduction component is allowed to be turned on based on the corresponding type of message and the power supply status of the power supply system. This command instructs the BMS to control the first and second switch modules of the conductive heating unit to close, forming a heating circuit in which the power supply system or battery module conducts electricity to the heat conduction component.

[0022] Fifthly, embodiments of this application provide a heating device for an energy storage battery, comprising: A monitoring device is used to monitor the temperature of the battery module and determine whether the battery module has the conditions to power the heat-conducting components. The transmitting device is used to send a heating request to the energy management system (EMS) when the heating demand is met, and to provide feedback on the judgment result through a message of the corresponding type. The receiving device is used to receive the heating command issued by the EMS when it determines that the heat conduction component can be turned on based on the corresponding type of message and the power supply status of the power supply system. A control device is used to control the closure of the first and second switch modules of the conductive heating unit, forming a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting components.

[0023] Sixthly, embodiments of this application provide an electronic device, including: at least one processor, and a memory communicatively connected to the at least one processor, wherein: The memory stores a computer program that can be executed by at least one processor, which enables the at least one processor to perform the steps of the energy storage battery heating method of either the second or third aspect described above.

[0024] In a seventh aspect, embodiments of this application provide a storage medium in which, when a computer program in the storage medium is executed by a processor of an electronic device, the electronic device is able to perform the steps of any one of the energy storage battery heating methods described in the second or third aspect.

[0025] In this embodiment, the energy storage battery heating system is used to heat the battery module in the battery system. It includes a conductive heating unit comprising a heat-conducting component and a first switch module connected in series in a first branch. The heat-conducting component heats the battery module when conductive. The first branch and the second branch containing the battery module are connected in parallel and then connected to the power supply system via a second switch module. The battery management system (BMS) monitors the temperature of the battery module and determines whether the battery module has the conditions to energize the heat-conducting component. When the heating requirement is met, it sends a heating request to the energy management system (EMS) and provides feedback on the judgment result via a corresponding type of message. It receives the heating command issued by the EMS and controls the first and second switch modules to close, forming a heating circuit where the power supply system or the battery module conducts electricity to the heat-conducting component. The EMS receives the heating request and corresponding type of message sent by the BMS. Based on the corresponding type of message and the power supply status of the power supply system, it determines that it is permissible to energize the heat-conducting component and issues a heating command to the BMS. In this way, by monitoring the temperature of the battery module through the BMS and sending a heating request to the EMS when the heating requirements are met, a heating circuit is formed by using the conductive heating unit structure, with the power supply system or battery module as the heat conduction component. This raises the temperature of the battery module, ensuring that the energy storage battery can still operate normally in ultra-low temperature or low temperature conditions, thereby ensuring the normal operation of the back-end critical loads around the clock. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A schematic diagram of the architecture of an energy storage battery heating system provided in this application embodiment; Figure 2 A schematic diagram of another energy storage battery heating system provided in this application embodiment; Figure 3 A flowchart illustrating a method for heating an energy storage battery, as provided in this application embodiment; Figure 4 A flowchart illustrating another energy storage battery heating method provided in this application embodiment; Figure 5 This application provides a schematic diagram of the overall architecture of an energy storage system. Figure 6 This is a schematic diagram of the structure of an energy storage battery heating device provided in an embodiment of this application; Figure 7 A schematic diagram of another energy storage battery heating device provided in the embodiments of this application; Figure 8 This is a schematic diagram of the hardware structure of an electronic device for implementing a heating method for an energy storage battery, provided as an embodiment of this application. Detailed Implementation

[0027] To ensure that energy storage batteries can still operate normally in ultra-low or low temperature conditions and enable critical back-end loads to work normally around the clock, this application provides an energy storage battery heating system, method, apparatus, equipment, and storage medium.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two devices. Those skilled in the art can understand the specific meaning of the above term in this application based on the specific circumstances.

[0030] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0031] For ease of understanding, the technical terms used in this application are as follows: A power conversion system (PCS) controls the charging and discharging process of energy storage batteries, converting AC to DC power, and can directly supply power to AC loads in the absence of a power grid.

[0032] A Battery Management System (BMS) is a system that monitors and manages battery modules. It monitors the usage status of each battery in the battery module in real time, and takes necessary measures to mitigate battery inconsistencies and improve the overall performance of the battery module.

[0033] The Energy Management System (EMS) coordinates and manages the system. The EMS is the control center for the operation and management of the microgrid system and is responsible for executing the operation and management strategies.

[0034] PTC heater: It is an automatic temperature-controlled, energy-saving heater that uses PTC ceramic heating elements and aluminum tubes. PTC heaters have the advantages of low thermal resistance, high heat exchange efficiency, and high impedance.

[0035] State of charge (SOC) reflects the remaining capacity of a battery. It is numerically defined as the ratio of remaining capacity to the battery's total capacity, and is usually expressed as a percentage.

[0036] A battery system is an energy storage system consisting of one or more battery packs or battery modules connected in series or in parallel, and equipped with a complete battery management system.

[0037] Figure 1 This is a schematic diagram of the architecture of an energy storage battery heating system provided in an embodiment of this application, including a conductive heating unit 101, a battery management system (BMS) 102, and an energy management system (EMS) 103.

[0038] The conductive heating unit 101 includes a heat-conducting component 1011 and a first switch module 1012 connected in series in the first branch. The heat-conducting component 1011 heats the battery module 105 when it is conductive. After the first branch and the second branch where the battery module 105 is located are connected in parallel, they are connected to the power supply system 107 through the second switch module 106. Here, the heat-conducting component 1011 can be a heating film, which can be attached to both sides of the battery module 105 by adhesive.

[0039] The battery management system (BMS) 102 monitors the temperature of the battery module 105 and determines whether the battery module 105 has the conditions to power the heat conduction component 1011. When the heating requirement is met, it sends a heating request to the EMS 103 and feeds back the judgment result through a corresponding type of message. It receives the heating command issued by the EMS 103 and controls the first switch module 1012 and the second switch module 106 to close, forming a heating circuit in which the power supply system 107 or the battery module 105 conducts electricity to the heat conduction component 1011.

[0040] The Energy Management System (EMS) 103 receives heating requests and corresponding messages from the Battery Management System (BMS) 102. Based on the message type and the power supply status of the power supply system 107, when it determines that the heat-conducting component 1011 can be powered on, it issues a heating command to the BMS 102. The power supply status of the power supply system 107 includes a powered-on state and a powered-off state. The messages include a discharge permission message corresponding to the battery module 105 having the conditions to power the heat-conducting component 1011, and a discharge prohibition message corresponding to the battery module 105 not having the conditions to power the heat-conducting component 1011.

[0041] In specific implementation, EMS103 may determine to allow the heat-conducting component 1011 to be turned on when it receives a heating request and determines that the power supply status is on; or when it receives a heating request, determines that the power supply status is off, and receives a discharge permission message, it may determine to allow the heat-conducting component 1011 to be turned on.

[0042] In this way, when the temperature of the battery module is monitored by BMS102 and the heating requirement is met, a heating request is sent to EMS103. Utilizing the structure of the conductive heating unit 101, a heating circuit is formed with the power supply system 107 or the battery module 105 as the heat conduction component 1011, which raises the temperature of the battery module 105. This ensures that the energy storage battery can still operate normally under ultra-low temperature or low temperature conditions, thereby ensuring the normal operation of the back-end critical loads around the clock.

[0043] In specific implementation, the second switch module 106 is also connected to the load. The BMS102 is specifically used to control the first switch module 1012 and the second switch module 106 to close when the power supply system 107 is in the energized state after receiving the heating command issued by the EMS103, so as to form a heating circuit in which the power supply system 107 conducts electricity to the heat conduction component 1011 and a charging circuit in which the power supply system 107 charges the battery module 105.

[0044] Here, the power supply system 107 is usually powered by mains power and diesel generator as the main input power source. The power supply state of the power supply system 107 is mainly divided into power-on state and power-off state. In the power-on state, either mains power or diesel generator is online. In the power-off state, neither mains power nor diesel generator is online. Since the output voltage of the power supply system 107 is higher than the output voltage of the battery system when the power supply state is power-on, a heating circuit is formed in which the power supply system 107 conducts electricity to the heat conduction component 1011 and a charging circuit is formed in which the power supply system 107 charges the battery module 105.

[0045] In specific implementation, BMS102 is used to control the first switch module 1012 and the second switch module 106 to close after receiving the heating command issued by EMS103 and determining that the battery module 105 has the conditions to power the heat conduction component 1011 and the power supply system 107 is in the power off state, thereby forming a heating circuit in which the battery module 105 conducts electricity to the heat conduction component 1011 and a power supply circuit in which the battery module 105 supplies power to the load.

[0046] Specifically, BMS102 can determine that the battery module 105 does not meet the conditions for energizing the heat-conducting component 1011 when it determines that the temperature of the battery module 105 is below a first threshold, or when it determines that the temperature of the battery module 105 is not below the first threshold but below a second threshold, and the output power of the battery module 105 is lower than the power of the heat-conducting component 1011. Here, the first threshold can be determined based on the lowest operating temperature of the battery module 105, and the second threshold can be determined based on the critical temperature of the normal operating temperature of the battery module 105. Since the operating temperature of the battery module 105 is affected by the production materials, battery capacity, and battery type, the first and second thresholds can be set by technicians according to the actual situation, and are not specifically limited here.

[0047] In specific implementation, BMS102 may determine that the battery module 105 does not have the conditions to power the heat conduction component 1011 when it determines that the temperature of the battery module 105 is lower than the first threshold, or when it determines that the temperature of the battery module 105 is not lower than the first threshold and is lower than the second threshold, and the output power of the battery module 105 is lower than the power of the heat conduction component 1011.

[0048] In specific implementation, BMS102 can determine that the battery module 105 has the conditions to power the heat conduction component 1011 when it is determined that the temperature of the battery module 105 is not lower than the first threshold and is lower than the second threshold, and when it is determined that the output power of the battery module 105 is not lower than the power of the heat conduction component 1011.

[0049] BMS102 is used to determine that the heating requirement is met when the temperature of the battery module 105 is lower than the second threshold, or when the temperature of the battery module 105 is not lower than the second threshold and is lower than the third threshold and the heat conduction component 1011 is powered on.

[0050] Thus, when it is determined that the battery module 105 meets the heating requirements, and when it is determined that the power supply system 107 is in the energized state, a heating circuit is formed in which the power supply system 107 conducts electricity to the heat conduction component 1011 to heat the battery module 105. When the power supply system 107 is in the de-energized state, if the battery module 105 has the conditions to energize the heat conduction component 1011, a heating circuit can also be formed in which the battery module 105 acts as a backup power source to conduct electricity to the heat conduction component 1011 to heat the battery module 105. This ensures that if the battery module 105 is in a low-temperature environment, it can conduct electricity to the heat conduction component 1011 through either the power supply system 107 or the battery module 105 to heat the battery module 105, thereby ensuring that the battery module 105 can still work normally in a low-temperature environment.

[0051] In some embodiments, in addition to the heating method using thermally conductive components described above, the battery module can also be heated by liquid heating. Figure 2 This is a schematic diagram of another energy storage battery heating system provided in an embodiment of this application. Besides the conductive heating unit 201, battery management system (BMS) 202, and energy management system (EMS) 203, it also includes a liquid heating circuit 204, a liquid storage device 205, and a heat conduction device 206. The following description, in conjunction with... Figure 2 This section mainly introduces the liquid heating part, in which the liquid heating circuit 204 includes a liquid heat conduction pipe 2041, a circulation power device 2042, and a heating device 2043.

[0052] like Figure 2 As shown, the outlet of the liquid heat conduction pipe 2041, the circulation power unit 2024, the heating device 2043, and the inlet of the liquid heat conduction pipe 2041 are sequentially connected to form a circuit. The heating device 2043 starts heating after receiving a heating command from the EMS 203. The liquid heat conduction pipe 2041 is connected to the battery module 207 through the heat conduction device 206. The liquid storage device 205 is connected to the circulation power unit 2042 and is used to supply liquid to the liquid heating circuit 204, where the liquid circulates. The circulation power unit 2042 can be an electronic water pump, the heating device 2043 can be a PTC heater, the heat conduction device 206 can be a thermally conductive adhesive, and the liquid storage device 205 can be a water jug. The liquid can be selected from materials with a low freezing point, such as ethylene glycol.

[0053] In practice, EMS203 is also used to issue a heating command to heating device 2043 when the output power of the power supply system 208 or battery module 207 that is currently conducting electricity to the heat conduction component 2011 is determined to meet the liquid heating conditions.

[0054] In this way, based on the output power of the power supply system 208 or the battery module 207 that is currently conducting electricity to the heat-conducting component 2011, the liquid heating method is determined when the liquid heating conditions are met. The combination of the two heating methods can quickly improve the heating temperature rise rate of the battery module 207, thereby quickly meeting the power requirements of the load.

[0055] In specific implementation, BMS202 is also used to send a heating stop request to EMS203 when the temperature of battery module 207 is not lower than the third threshold and the heat-conducting component 2011 is powered on. The third threshold is higher than the second threshold. The third threshold can be determined based on a preset value of a critical temperature higher than the normal operating temperature of battery module 207. Since the operating temperature of battery module 207 is affected by production materials, battery capacity, and battery type, the third threshold can be set by technicians according to actual conditions; it is not specifically limited here.

[0056] In specific implementation, EMS203 is also used to receive a heating stop request sent by BMS202, send a heating prohibition command to BMS202, and send a heating prohibition command to heating device 2043 when heating device 2043 is in the start state. After receiving the heating prohibition command sent by EMS203, BMS202 controls the first switch module 2012 to open, and heating device 2043 shuts off heating after receiving the heating prohibition command sent by EMS203.

[0057] In this way, when BMS202 determines that the battery module 207 meets the heating stop conditions, it sends a heating stop request to EMS203. EMS203 then sends heating stop commands to heating device 2043 and BMS202 respectively to control heating device 2043 and heat conduction component 2011 to stop heating. This helps save power consumption of power supply system 208 or battery module 207. At the same time, since the temperature usually has a fluctuation range, setting a third threshold slightly higher than the second threshold also helps ensure that the temperature of battery module 207 will not drop below the second threshold after heating stops, even if the temperature fluctuates, thus ensuring the normal operation of battery module 207.

[0058] It is worth noting that the system architecture diagrams in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions in the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application, nor are they limited to energy storage systems. The technical solutions provided in the embodiments of this application are also applicable to similar problems for other application architectures and business applications.

[0059] After introducing the system architecture of the embodiments of this application, the energy storage battery heating method proposed in this application will be described below with specific embodiments. Figure 3A flowchart of a method for heating an energy storage battery provided in this application embodiment is shown. This method is applied to... Figure 2 The method includes the following steps in the EMS.

[0060] In step 301, the system receives a heating request sent by the BMS when it determines that the heating requirements are met, and a judgment result from the BMS via a corresponding type of message indicating whether the battery module has the conditions to power on the heat-conducting components.

[0061] In practice, the BMS determines that the heating requirement is met when it detects that the battery module temperature is below the second threshold, or when it detects that the battery module temperature is not lower than the second threshold and is lower than the third threshold and the heat-conducting components are powered on.

[0062] In specific implementation, the message includes a discharge permission message corresponding to the battery module having the conditions to power the heat-conducting component, and a discharge prohibition message corresponding to the battery module not having the conditions to power the heat-conducting component. The conditions for whether the battery module has the conditions to power the heat-conducting component can be determined as follows: if the battery module temperature is determined to be below a first threshold, or if the battery module temperature is determined to be not below the first threshold and below a second threshold, and the output power of the battery module is lower than the power of the heat-conducting component, then the battery module does not have the conditions to power the heat-conducting component; or if the battery module temperature is determined to be not below the first threshold and below the second threshold, and the output power of the battery module is determined to be not lower than the power of the heat-conducting component, then the battery module has the conditions to power the heat-conducting component.

[0063] For example, based on tests conducted on battery module A, it is determined that when the temperature is below -40 degrees Celsius, battery module A has no output capability, i.e., battery module A cannot start. Therefore, the first threshold can be set to -40°C. When the temperature is 0 degrees Celsius, battery module A can work normally. Therefore, the second threshold can be set to 0°C. Then, when the battery module temperature is below -40°C, or when it is determined that the battery module temperature is not below -40°C but below 0°C, and the output power of the battery module is lower than the power of the heat-conducting component, it can be determined that the battery module does not have the condition to power the heat-conducting component. When it is determined that the battery module temperature is not below -40°C but below 0°C, and the output power of the battery module is not lower than the power of the heat-conducting component, it can be determined that the battery module has the condition to power the heat-conducting component.

[0064] In step 302, when it is determined that the heat conduction component is allowed to be turned on according to the corresponding type of message and the power supply status of the power supply system, a heating command is sent to the BMS to instruct the BMS to control the first switch module and the second switch module of the conductive heating unit to close, forming a heating circuit in which the power supply system or battery module conducts electricity to the heat conduction component.

[0065] In practice, the power supply status of the power supply system includes a powered-on state and a powered-off state. When the EMS receives a heating request and determines that the power supply status is powered on, it determines that the heat-conducting components can be turned on; or when the EMS receives a heating request, determines that the power supply status is powered off, and receives a discharge permission message, it determines that the heat-conducting components can be turned on.

[0066] In practice, a heating command can be sent to the heating device in the liquid heating circuit when the liquid heating conditions are met, based on the output power of the power supply system or battery module that is currently conducting electricity to the heat-conducting component.

[0067] For example, upon receiving a heating request from the BMS, if the power supply is in an on-state and the output power of the power supply system simultaneously meets the power requirements of both the heat-conducting components and the heating device, then the liquid heating conditions are determined to be met. Alternatively, upon receiving a heating request from the BMS, if the power supply is in an off-state and a discharge permission message is received, and the output power of the battery module simultaneously meets the power requirements of both the heat-conducting components and the heating device, then the liquid heating conditions are determined to be met. The output power of the battery module is determined by the BMS based on a lookup table of the battery module's maximum continuous discharge capability at different temperatures and under the State of Charge (SOC) state, and the BMS feeds back the battery module's output power to the EMS. This feedback can be real-time or triggered upon receiving a feedback instruction command from the EMS; no limitation is made here.

[0068] In practice, it can also receive heating stop requests sent by BMS, send heating prohibition commands to BMS, and send heating prohibition commands to heating devices when the heating device is in the start state.

[0069] For example, after receiving a heating stop request from the BMS, the EMS first determines whether the heating device is turned on. If it is turned on, it sends a heating prohibition command to both the BMS and the heating device. If it is not turned on, it only sends a heating prohibition command to the BMS.

[0070] Figure 4 A flowchart of another energy storage battery heating method provided in this application embodiment, the method being applied to Figure 2 The method is implemented in the BMS and includes the following steps.

[0071] In step 401, the temperature of the battery module is monitored, and it is determined whether the battery module has the conditions to power the heat-conducting components.

[0072] In specific implementation, when the battery module temperature is determined to be below the first threshold, or when the battery module temperature is determined to be not below the first threshold and below the second threshold, and the output power of the battery module is lower than the power of the heat-conducting component, the battery module is determined not to have the condition to power the heat-conducting component; or when the battery module temperature is determined to be not below the first threshold and below the second threshold, and the output power of the battery module temperature is determined to be not lower than the power of the heat-conducting component, the battery module is determined to have the condition to power the heat-conducting component.

[0073] In step 402, when the heating requirement is met, a heating request is sent to the Energy Management System (EMS), and the judgment result is fed back through a message of the corresponding type.

[0074] In practice, if the battery module temperature is detected to be below the second threshold, it is determined that the heating requirement is met; or, if the battery module temperature is detected to be not lower than the second threshold and lower than the third threshold and the heat-conducting components are powered on, it is determined that the heating requirement is met.

[0075] In practice, when it is determined that the battery module has the conditions to power the heat-conducting components, a discharge permission message is sent back to the EMS; when it is determined that the battery module does not have the conditions to power the heat-conducting components, a discharge prohibition message is sent back to the EMS.

[0076] In step 403, a heating command is received from the EMS when it determines whether the heat-conducting component can be turned on based on the corresponding message type and the power supply status of the power supply system.

[0077] In step 404, the first and second switch modules of the conductive heating unit are closed to form a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting components.

[0078] In specific implementation, the second switch module is also connected to the load. If the power supply is in the energized state, the first and second switch modules are controlled to close, forming a heating circuit where the power supply system conducts electricity to the heat-conducting component and a charging circuit where the power supply system charges the battery module. Alternatively, if it is determined that the battery module has the conditions to energize the heat-conducting component and the power supply is in the de-energized state, the first and second switch modules are controlled to close, forming a heating circuit where the battery module conducts electricity to the heat-conducting component and a power supply circuit where the battery module supplies power to the load. Here, when the battery module is used as a backup power source, the battery module discharges to supply power to the load and the heat-conducting component.

[0079] In practice, when the temperature of the battery module is detected to be no lower than the third threshold and the heat conduction component is powered on, a heating stop request is sent to the EMS, a heating prohibition command is received from the EMS, and the first switch module is controlled to disconnect.

[0080] The following is a detailed description of the solution in this application, using the following example: a heating film as the heat-conducting component; a first switch module including two switches, K1 and K2; a second switch module including two switches, K3 and K4; an electronic water pump as the circulating power device; a PTC heater as the heating device; a heat-conducting adhesive with heat-conducting capabilities as the heat-conducting device; a water tank as the liquid storage device; and a first threshold of -40℃, a second threshold of 0℃, and a third threshold of 5℃.

[0081] Figure 5 This is a schematic diagram of the overall architecture of an energy storage system provided in an embodiment of this application, such as... Figure 5 As shown, the battery modules are located within the battery system and are connected in series and parallel to form the battery system. Heating films are attached to both sides of each module. An electronic water pump is connected to the outlet of the liquid heat conduction pipeline. The electronic water pump is connected to a PTC heater. The liquid, heated by the PTC heater, enters the inlet of the liquid heat conduction pipeline in the battery system. After circulating within the liquid heat conduction pipeline, it exits through the outlet to the electronic water pump. The kettle and the electronic water pump are connected. The power supply system includes mains power and a diesel generator. The battery system is connected to the power supply system through an energy storage converter (PCS). Both the battery system and the PCS are bidirectional, capable of both output and input. The diesel generator and mains power are unidirectional, providing only output. When the mains power supply is idle, it can charge the battery system. When neither the mains power nor the diesel generator is online, the battery system provides power to the load.

[0082] Specifically, it includes the following steps: Step 1: The BMS monitors the battery module temperature. When it is determined that the battery module temperature is below -40℃, it is determined that the battery module does not meet the conditions for powering the heating film. The BMS sends a heating request and sends a discharge prohibition message back.

[0083] At this time, the battery module has no output capability, that is, the battery module cannot discharge, and the discharge power is 0.

[0084] Step Two: The EMS receives the heating request and discharge prohibition message from the BMS, determines the power supply status of the power supply system, and if the mains power is online, the EMS controls the PCS to start in grid-connected mode and sends a heating command to the BMS. Upon receiving the heating command, the BMS closes K1, K2, K3, and K4, and the EMS adjusts the charging power of the PCS to the heating film power. Simultaneously, the EMS controls the PTC to start and adjusts the output power of the PCS to supply the PTC. If the mains power is offline, the EMS determines if the diesel generator is online. If online, the EMS controls the PCS to start offline, the diesel generator to start in grid-connected mode, and sends a heating command to the BMS. Upon receiving the heating command, the BMS closes K1, K2, K3, and K4, and the EMS adjusts the charging power of the PCS to the heating film power. If both the mains power and the diesel generator are offline, the EMS sends a heating prohibition command to the BMS.

[0085] Step 3: The BMS monitors the battery module temperature. When it is determined that -40℃≤battery module temperature<0℃, the BMS looks up the maximum continuous discharge capability of the battery module at different temperatures and SOCs. If the output power of the battery module is lower than the power of the heating film, it is determined that the battery module does not have the conditions to power the heating film, and a heating request is sent to the EMS and a discharge prohibition message is fed back. If the output power of the battery module is not lower than the power of the heating film, it is determined that the battery module has the conditions to power the heating film, and a heating request is sent to the EMS and a discharge allow message is fed back.

[0086] Step 4: The EMS receives the heating request and corresponding discharge message from the BMS. If the discharge message is a prohibition message, the implementation method is the same as in Step 2. If the discharge message is a discharge permission message, the power supply status of the power supply system is determined. If it is online, the implementation method is the same as the online method in Step 2. If both the mains power and the diesel generator are offline, since the discharge message is a discharge permission message, a heating command is still sent to the BMS. Upon receiving the heating command, the BMS closes K1, K2, K3, and K4, forming a heating circuit where the battery module conducts electricity to the heating film and a power supply circuit where the battery module supplies power to the load. Simultaneously, the EMS controls the PTC to start when it determines that the output power of the battery module simultaneously meets the power requirements of the heating film and the PTC heater.

[0087] Step 5: The BMS monitors the battery module temperature. When the battery module temperature is determined to be ≥0℃, the BMS first checks whether K1 and K2 are turned on. If they are turned on, a heating request is sent to the EMS before the battery module temperature reaches 5℃. The heating stop request is sent to the EMS when the battery module temperature is ≥5℃. If the BMS determines that K1 and K2 are not turned on, it directly sends a heating prohibition request to the EMS.

[0088] Step 6: If the EMS receives a heating stop request from the BMS, it sends a heating prohibition command to the BMS, determines whether the PTC heater is started, and if so, sends a heating prohibition command to the PTC heater.

[0089] Step 7: The BMS receives the heating prohibition command sent by the EMS and controls K1 and K2 to disconnect. At the same time, the PTC heater receives the heating prohibition command sent by the EMS and turns off heating.

[0090] Based on the same technical concept, this application also provides an energy storage battery heating device. The principle of the energy storage battery heating device in solving the problem is similar to that of the above-mentioned energy storage battery heating method. Therefore, the implementation of the energy storage battery heating device can refer to the implementation of the energy storage battery heating method, and the repeated parts will not be described again.

[0091] Figure 6This is a schematic diagram of the structure of an energy storage battery heating device provided in an embodiment of this application, including a receiving device 601 and a transmitting device 602.

[0092] The receiving device 601 is used to receive a heating request sent by the battery management system (BMS) when it determines that the heating requirement is met, and the judgment result of the BMS through a corresponding type of message on whether the battery module has the conditions to power on the heat conduction component.

[0093] The transmitting device 602 is used to send a heating command to the BMS when it is determined that the heat conduction component is allowed to be turned on according to the corresponding type of message and the power supply status of the power supply system. This command instructs the BMS to control the first and second switch modules of the conductive heating unit to close, forming a heating circuit in which the power supply system or battery module conducts electricity to the heat conduction component.

[0094] In some embodiments, the power supply state of the power supply system includes a power-on state and a power-off state. The message includes a discharge permission message corresponding to the battery module having the conditions to power on the heat-conducting component, and a discharge prohibition message corresponding to the battery module not having the conditions to power on the heat-conducting component. The sending device 602 is specifically used for: Upon receiving the heating request and determining that the power supply status is energized, it is determined that the heat-conducting component should be allowed to conduct; or Upon receiving the heating request, determining that the power supply status is off, and receiving a discharge permission message, it is determined that the heat-conducting component can be turned on.

[0095] In some embodiments, it also includes: The determining device 603 is used to determine, based on the output power of the power supply system or battery module that is currently conducting electricity to the heat-conducting component, that the liquid heating conditions are met, and then issue a heating command to the heating device in the liquid heating circuit.

[0096] In some embodiments, the determining device 603 is specifically used for: Upon receiving a heating request from the BMS, if the power supply is on and the output power of the power supply system simultaneously meets the power requirements of both the heat-conducting component and the heating device, then the liquid heating conditions are determined to be met; or Upon receiving a heating request from the BMS, if the power supply is in a power-off state and a discharge permission message is received, and the output power of the battery module simultaneously meets the power requirements of the heat-conducting component and the heating device, then the liquid heating conditions are determined to be met.

[0097] In some embodiments, the receiving device 601 is further configured to receive the heating stop request sent by the BMS, and the sending device 602 is further configured to send a heating prohibition command to the BMS, and send a heating prohibition command to the heating device when the heating device is in the start state.

[0098] Figure 7 A schematic diagram of another energy storage battery heating device provided in this application embodiment includes a monitoring device 701, a transmitting device 702, a receiving device 703, and a control device 704.

[0099] The monitoring device 701 is used to monitor the temperature of the battery module and determine whether the battery module has the conditions to power the heat-conducting components. The transmitting device 702 is used to send a heating request to the energy management system (EMS) when the heating demand is met, and to provide feedback on the judgment result through a message of the corresponding type. The receiving device 703 is used to receive the heating command issued by the EMS when it determines that the heat conduction component can be turned on based on the corresponding type of message and the power supply status of the power supply system. The control device 704 is used to control the closure of the first switch module and the second switch module of the conductive heating unit to form a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting components.

[0100] In some embodiments, the transmitting device 702 is specifically used for: When it is determined that the battery module meets the conditions for energizing the heat-conducting components, a discharge permission message is sent back to the EMS. If it is determined that the battery module does not meet the conditions for powering the heat-conducting components, a discharge prohibition message is sent back to the EMS.

[0101] In some embodiments, the monitoring device 701 is specifically used for: When the battery module temperature is determined to be below a first threshold, or when the battery module temperature is determined to be not below the first threshold but below a second threshold, and the output power of the battery module is lower than the power of the heat-conducting component, it is determined that the battery module does not have the condition to power the heat-conducting component; or When it is determined that the temperature of the battery module is not lower than the first threshold and is lower than the second threshold, and the output power of the battery module is not lower than the power of the heat-conducting component, it is determined that the battery module has the condition to power on the heat-conducting component.

[0102] In some embodiments, the transmitting device 702 is further configured to: When the temperature of the battery module is detected to be below the second threshold, it is determined that the heating requirement is met; or When the temperature of the battery module is detected to be not lower than the second threshold and lower than the third threshold, and the heat-conducting component is powered on, it is determined that the heating requirement is met.

[0103] In some embodiments, the second switching module is also connected to a load, and the control device 704 is specifically used for: If the power supply state is energized, the first switch module and the second switch module are controlled to close, forming a heating circuit where the power supply system conducts electricity to the heat-conducting components and a charging circuit where the power supply system charges the battery module; or If it is determined that the battery module has the conditions to power the heat-conducting component and the power supply status is off, the first switch module and the second switch module are controlled to close, forming a heating circuit in which the battery module conducts electricity to the heat-conducting component and a power supply circuit in which the battery module supplies power to the load.

[0104] In some embodiments, the transmitting device 702 is further configured to send a heating stop request to the EMS when the temperature of the battery module is not lower than a third threshold and the heat conduction component is powered on; the receiving device 703 is further configured to receive a heating prohibition command sent by the EMS; and the control device 704 is further configured to control the first switch module to disconnect.

[0105] The module division in this embodiment is illustrative and represents only one logical functional division. In actual implementation, other division methods are possible. Furthermore, the functional modules in each embodiment can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. Coupling between modules can be achieved through interfaces, typically electrical communication interfaces, but mechanical interfaces or other types of interfaces are also possible. Therefore, modules described as separate components may or may not be physically separate; they can be located in one place or distributed across different locations on the same or different devices. The integrated modules described above can be implemented in hardware or as software functional modules.

[0106] Having introduced the energy storage battery heating system, method, and apparatus according to exemplary embodiments of this application, we will now introduce an electronic device according to another exemplary embodiment of this application.

[0107] The following reference Figure 8 To describe an electronic device 130 implemented according to this embodiment of the present application. Figure 8 The electronic device 130 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0108] like Figure 8As shown, the electronic device 130 is presented in the form of a general electronic device. The components of the electronic device 130 may include, but are not limited to: at least one processor 131, at least one memory 132, and a bus 133 connecting different system components (including memory 132 and processor 131).

[0109] Bus 133 represents one or more of several bus structures, including a memory bus or memory controller, peripheral bus, processor, or local bus using any of the various bus structures.

[0110] The memory 132 may include a readable medium in the form of volatile memory, such as random access memory (RAM) 1321 and / or cache memory 1322, and may further include read-only memory (ROM) 1323.

[0111] The memory 132 may also include a program / utility 1325 having a set (at least one) of program modules 1324, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0112] Electronic device 130 can also communicate with one or more external devices 134 (e.g., keyboard, pointing device, etc.), and with one or more devices that enable a user to interact with electronic device 130, and / or with any device that enables electronic device 130 to communicate with one or more other electronic devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 135. Furthermore, electronic device 130 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 136. As shown, network adapter 136 communicates with other modules used in electronic device 130 via bus 133. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0113] In an exemplary embodiment, a storage medium is also provided, which, when a computer program in the storage medium is executed by a processor of an electronic device, enables the electronic device to perform any of the above-described energy storage battery heating methods. Optionally, the storage medium may be a non-transitory computer-readable storage medium, such as a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device.

[0114] In an exemplary embodiment, the electronic device of this application may include at least one processor and a memory communicatively connected to the at least one processor, wherein the memory stores a computer program that can be executed by the at least one processor, and when the computer program is executed by the at least one processor, it can cause the at least one processor to perform the steps of any energy storage battery heating method provided in the embodiments of this application.

[0115] In an exemplary embodiment, a computer program product is also provided, which, when executed by an electronic device, enables the electronic device to implement any of the exemplary methods provided in this application.

[0116] Furthermore, computer program products may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, RAM, ROM, erasable programmable read-only memory (EPROM), flash memory, optical fiber, compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0117] The program product for heating energy storage batteries in this application embodiment can be a CD-ROM and include program code, and can run on a computing device. However, the program product of this application is not limited to this. In this document, the readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0118] A readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying readable program code. This propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0119] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, radio frequency (RF), or any suitable combination thereof.

[0120] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, such as a Local Area Network (LAN) or a Wide Area Network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0121] It should be noted that although several units or sub-units of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0122] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0123] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied 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.

[0124] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0125] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0126] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0127] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0128] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A battery heating system for energy storage, used to heat battery modules in a battery system, characterized in that, include: The conductive heating unit includes a heat-conducting component and a first switch module connected in series in the first branch. The heat-conducting component heats the battery module when it is conductive. The first branch and the second branch where the battery module is located are connected in parallel and then connected to the power supply system through the second switch module. A Battery Management System (BMS) is used to monitor the temperature of the battery module and determine whether the battery module is ready to power the heat-conducting component. The BMS determines whether the battery module is ready to power the heat-conducting component by: determining that the battery module is not ready to power the heat-conducting component when the battery module temperature is below a first threshold; and determining that the battery module is not ready to power the heat-conducting component when the battery module temperature is not below the first threshold and is below a second threshold, and if the output power of the battery module is lower than the power of the heat-conducting component, then the battery module is not ready to power the heat-conducting component; if the output power of the battery module is not lower than the power of the heat-conducting component, then the battery module is ready to power the heat-conducting component. The BMS is specifically configured to: detect when the battery module temperature is lower than the second threshold, or detect when the battery module temperature is not lower than the second threshold and lower than the third threshold and the heat-conducting component is powered on, determine that the heating requirement is met, send a heating request to the energy management system (EMS) when the heating requirement is met, and send a discharge permission message to the EMS when it is determined that the battery module has the conditions to power on the heat-conducting component, and send a discharge prohibition message when it is determined that the conditions for powering on the heat-conducting component are not met, receive a heating command issued by the EMS, and control the first switch module and the second switch module to close, forming a heating circuit in which the power supply system or the battery module conducts electricity to the heat-conducting component; The EMS is used to receive heating requests sent by the BMS, as well as discharge permission messages or discharge prohibition messages. When it receives the heating request and determines that the power supply status of the power supply system is on, it determines that it is allowed to turn on the heat-conducting component. When it receives the heating request, determines that the power supply status is off, and receives the discharge permission message, it determines that it is allowed to turn on the heat-conducting component. When it determines that it is allowed to turn on the heat-conducting component, it sends a heating command to the BMS.

2. The system according to claim 1, characterized in that, The second switch module is also connected to the load; Specifically, the BMS is used to control the first switch module and the second switch module to close when the power supply system is in the energized state after receiving the heating command issued by the EMS, thereby forming a heating circuit in which the power supply system conducts electricity to the heat-conducting components and a charging circuit in which the power supply system charges the battery module. Specifically, after receiving a heating command from the EMS, the BMS controls the first switch module and the second switch module to close when it determines that the battery module has the conditions to power the heat-conducting component and the power supply system is in a power-off state, thereby forming a heating circuit in which the battery module conducts electricity to the heat-conducting component and a power supply circuit in which the battery module supplies power to the load.

3. The system according to claim 1 or 2, characterized in that, Also includes: A liquid heating circuit, a liquid storage device, and a heat conduction device, wherein the liquid heating circuit includes a liquid heat conduction pipeline, a circulation power device, and a heating device; The liquid outlet of the liquid heat conduction pipeline, the circulation power device, the heating device, and the liquid inlet of the liquid heat conduction pipeline are connected in sequence to form a loop. The heating device starts heating after receiving the heating command from the EMS. The liquid heat conduction pipeline is connected to the battery module through the heat conduction device, and the liquid storage device is connected to the circulation power device to provide liquid to the liquid heating circuit, and the liquid circulates in the liquid heating circuit. The EMS is also used to determine, based on the output power of the power supply system or battery module currently conducting electricity to the heat-conducting component, that the liquid heating conditions are met, and then issue a heating command to the heating device.

4. The system as described in claim 3, characterized in that, The BMS is also used to send a heating stop request to the EMS when it detects that the temperature of the battery module is not lower than the third threshold and the heat conduction component is powered on. The EMS is also used to receive the heating stop request sent by the BMS, send a heating prohibition command to the BMS, and send a heating prohibition command to the heating device when the heating device is in the start state; The BMS is also used to receive the heating prohibition command sent by the EMS and control the first switch module to disconnect. The heating device is also used to receive a heating prohibition command sent by the EMS and turn off the heating.

5. A method for heating an energy storage battery, applied to the EMS in any one of the energy storage battery heating systems described in claims 1 to 4, characterized in that, include: The system receives a heating request sent by the battery management system (BMS) when it determines that the heating requirement is met, a discharge permission message fed back by the BMS when it determines that the battery module has the conditions to power on the heat conduction component, and a discharge prohibition message fed back when it determines that the conditions to power on the heat conduction component are not met. Upon receiving the heating request and determining that the power supply system is in an on-state, the system determines that the heat-conducting component can be turned on; upon receiving the heating request and determining that the power supply is in an off-state, and upon receiving the discharge permission message, the system determines that the heat-conducting component can be turned on; upon determining that the heat-conducting component can be turned on, a heating command is sent to the BMS to instruct the BMS to control the first and second switch modules of the conductive heating unit to close, forming a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting component.

6. The method according to claim 5, characterized in that, Also includes: Based on the output power of the power supply system or battery module that is currently conducting electricity to the heat-conducting component, when it is determined that the liquid heating conditions are met, a heating command is issued to the heating device in the liquid heating circuit.

7. The method according to claim 6, characterized in that, Determine if the liquid heating conditions are met, including: Upon receiving a heating request from the BMS, if the power supply is on and the output power of the power supply system simultaneously meets the power requirements of both the heat-conducting component and the heating device, then the liquid heating conditions are determined to be met; or Upon receiving a heating request from the BMS, if the power supply is in a power-off state and a discharge permission message is received, and the output power of the battery module simultaneously meets the power requirements of the heat-conducting component and the heating device, then the liquid heating conditions are determined to be met.

8. The method according to claim 6, characterized in that, Also includes: The system receives a heating stop request from the BMS, sends a heating prohibition command to the BMS, and sends a heating prohibition command to the heating device when the heating device is in the start state.

9. A method for heating an energy storage battery, applied to a BMS in any one of the energy storage battery heating systems described in claims 1 to 4, characterized in that, include: The system monitors the temperature of the battery module and determines whether the battery module is capable of powering the heat-conducting component. The determination of whether the battery module is capable of powering the heat-conducting component by the BMS includes: if the battery module temperature is below a first threshold, determining that the battery module is not capable of powering the heat-conducting component; if the battery module temperature is not below the first threshold and is below a second threshold, and if the output power of the battery module is lower than the power of the heat-conducting component, then determining that the battery module is not capable of powering the heat-conducting component; if the output power of the battery module is not lower than the power of the heat-conducting component, then determining that the battery module is capable of powering the heat-conducting component. The BMS is specifically configured to: detect when the battery module temperature is lower than the second threshold, or detect when the battery module temperature is not lower than the second threshold and lower than the third threshold and the heat-conducting component is powered on, determine that the heating requirement is met, send a heating request to the energy management system (EMS) when the heating requirement is met, and send a discharge permission message to the EMS when it is determined that the battery module has the conditions to power on the heat-conducting component, and send a discharge prohibition message when it is determined that the conditions for powering on the heat-conducting component are not met. The system receives a heating command issued by the EMS when it receives the heating request and determines that the power supply status of the power supply system is on, or when it receives the heating request and determines that the power supply status is off and receives the discharge permission message, and determines that it is allowed to turn on the heat-conducting component. The first and second switch modules of the conductive heating unit are closed to form a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting components.

10. The method according to claim 9, characterized in that, The second switching module is also connected to the load, controlling the closure of the first and second switching modules of the conductive heating unit to form a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting components, including: If the power supply state is energized, the first switch module and the second switch module are controlled to close, forming a heating circuit where the power supply system conducts electricity to the heat-conducting components and a charging circuit where the power supply system charges the battery module; or If it is determined that the battery module has the conditions to power the heat-conducting component and the power supply status is off, the first switch module and the second switch module are controlled to close, forming a heating circuit in which the battery module conducts electricity to the heat-conducting component and a power supply circuit in which the battery module supplies power to the load.

11. The method according to claim 9, characterized in that, Also includes: When the temperature of the battery module is detected to be no lower than the third threshold and the heat conduction component is powered on, a heating stop request is sent to the EMS. Upon receiving the heating prohibition command sent by the EMS, the first switch module is controlled to disconnect.

12. A heating device for an energy storage battery, used in the EMS of the energy storage battery heating system according to any one of claims 1 to 4, characterized in that, include: A receiving device is used to receive a heating request sent by the battery management system (BMS) when it determines that the heating requirement is met, a discharge permission message fed back by the BMS when it determines that the battery module has the conditions to power on the heat-conducting component, and a discharge prohibition message fed back when it determines that the conditions to power on the heat-conducting component are not met. A transmitting device is configured to determine, upon receiving the heating request and determining that the power supply status of the power supply system is energized, allow the heat-conducting component to be turned on; and upon receiving the heating request, determining that the power supply status is de-energized and receiving the discharge permission message, also allow the heat-conducting component to be turned on. When it is determined that the thermal conductive component is allowed to be turned on, a heating command is sent to the BMS to instruct the BMS to control the first and second switch modules of the conductive heating unit to close, forming a heating circuit in which the power supply system or battery module conducts electricity to the thermal conductive component.

13. A battery heating device for use in the BMS of the battery heating system according to any one of claims 1 to 4, characterized in that, include: A monitoring device is used to monitor the temperature of a battery module and determine whether the battery module meets the conditions for energizing a heat-conducting component. The determination of whether the battery module meets the conditions for energizing the heat-conducting component includes: determining that the battery module does not meet the conditions for energizing the heat-conducting component when the battery module temperature is below a first threshold; and determining that the battery module does not meet the conditions for energizing the heat-conducting component if the battery module temperature is not lower than the first threshold and is lower than a second threshold, and if the output power of the battery module is lower than the power of the heat-conducting component, and if the output power of the battery module is not lower than the power of the heat-conducting component, and the battery module meets the conditions for energizing the heat-conducting component. The transmitting device is configured to detect when the battery module temperature is lower than the second threshold, or when the battery module temperature is not lower than the second threshold and is lower than the third threshold and the heat-conducting component is powered on, determine that the heating requirement is met, send a heating request to the energy management system (EMS) when the heating requirement is met, and send a discharge permission message to the EMS when the battery module has the conditions to power on the heat-conducting component, and send a discharge prohibition message when the conditions for powering on the heat-conducting component are not met. The receiving device is used to receive the heating command issued by the EMS when it receives the heating request and determines that the power supply status of the power supply system is on, or when it receives the heating request and determines that the power supply status is off and receives the discharge permission message, and determines that the heat conduction component is allowed to be turned on. A control device is used to control the closure of the first and second switch modules of the conductive heating unit, forming a heating circuit in which the power supply system or battery module conducts electricity to the heat-conducting components.

14. An electronic device, characterized in that, include: At least one processor, and a memory communicatively connected to said at least one processor, wherein: The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the method as described in any one of claims 5-11.

15. A storage medium, characterized in that, When the computer program in the storage medium is executed by the processor of the electronic device, the electronic device is able to perform the method as described in any one of claims 5-11.

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