Battery heating control system, energy storage device, electric device and control method

Abstract

This application provides a battery heating control system, energy storage device, electrical device, and control method, belonging to the field of battery heating technology. The system includes an energy storage device, at least one pulse generating unit, and a first control unit. The energy storage device includes at least one first energy storage unit. A first terminal of the pulse generating unit is used to input initial electrical energy, a second terminal of the pulse generating unit is connected to the first energy storage unit to be heated, and a control terminal of the pulse generating unit is connected to the first control unit. The pulse generating unit is used to generate a first pulse current under the control of the first control unit and to output the first pulse current to the first energy storage unit to be heated. The first energy storage unit to be heated heats up based on its internal resistance under the action of the first pulse current. This application can achieve the effects of increasing heating power, reducing energy consumption, and reducing cost and space occupation.

Description

Technical Field

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

[0002] With the rapid popularization of new energy vehicles, relevant technicians have provided a variety of ways to charge and replenish the energy of new energy vehicles. Among them, the charging method based on energy storage power stations can be used to regulate the peak and valley electricity consumption of the power grid because the energy storage power station integrates multiple batteries.

[0003] In related technologies, the charging and discharging performance of batteries is greatly affected by temperature. Especially in low-temperature environments, the internal resistance of the battery is high, which can lead to a decrease in charging and discharging efficiency and even increase the risk of lithium plating. Therefore, relevant technicians use methods such as natural battery heating, forced-air heating, heating equipment inside the battery pack, and liquid cooling system circulation heating to heat the batteries in energy storage power stations and new energy vehicles in order to ensure the charging and discharging efficiency of the batteries.

[0004] However, the solutions in the related technologies may have problems such as insufficient heating power and high energy consumption, and they also require additional heating devices, resulting in higher costs and space requirements. Summary of the Invention

[0005] The purpose of this application is to provide a battery heating control system, energy storage device, electrical equipment and control method, which can achieve the effects of increasing heating power, reducing energy consumption, and reducing cost and space occupation.

[0006] The embodiments of this application are implemented as follows:

[0007] A first aspect of this application provides a battery heating control system, the system comprising:

[0008] An energy storage device, at least one pulse generating unit, and a first control unit; the energy storage device includes at least one first energy storage unit.

[0009] The first end of the pulse generating unit is used to input initial electrical energy, the second end of the pulse generating unit is connected to the first energy storage unit to be heated, and the control end of the pulse generating unit is connected to the first control unit; the pulse generating unit is used to generate a first pulse current under the control of the first control unit, and to output the first pulse current to the first energy storage unit to be heated respectively.

[0010] The first energy storage unit to be heated is used to generate heat based on the internal resistance of the first energy storage unit under the action of the first pulse current.

[0011] In one embodiment, the system further includes a current conversion unit;

[0012] The first end of the current conversion unit is connected to the second end of the pulse generation unit, and the second end of the current conversion unit is connected to the first energy storage unit to be heated.

[0013] The current conversion unit is used to output the first pulse current to the first energy storage unit to be heated.

[0014] In one embodiment, the system further includes an electrical device, in which the pulse generating unit and the first control unit are disposed, and the electrical device further includes a second energy storage unit;

[0015] The third terminal of the pulse generating unit is connected to the second energy storage unit, and the pulse generating unit is also used to output the first pulse current to the second energy storage unit.

[0016] The second energy storage unit is used to generate heat based on the internal resistance of the second energy storage unit under the action of the first pulse current;

[0017] The initial electrical energy is provided by either the first energy storage unit or the second energy storage unit.

[0018] In one embodiment, the system further includes a communication module;

[0019] The first end of the communication module is connected to the second energy storage unit, and the second end of the communication module is connected to the energy storage device;

[0020] The communication module is used to enable the energy storage device and the power consumption device to communicate via a handshake.

[0021] In one embodiment, the energy storage device includes a plurality of first energy storage units and a power switching unit;

[0022] The first end of the power switching unit is connected to the second end of the communication module, and the second and third ends of the power switching unit are respectively connected to the first and second ends of each of the first energy storage units; the power switching unit is used to connect or disconnect the path between each of the second energy storage units and the electrical equipment.

[0023] The second end of each of the first energy storage units is also connected to the second end of the current conversion unit;

[0024] Specifically, the current conversion unit is used to convert the first pulse current into a second pulse current and output the second pulse current to the first energy storage unit; the first energy storage unit is used to generate heat based on the second pulse current and the internal resistance of the energy storage unit when the path between it and the electrical equipment is connected.

[0025] In one embodiment, the system further includes a grid-side power supply and a power conversion unit;

[0026] The first transmission terminal of the power conversion unit is used to connect to the grid-side power supply, and each of the second transmission terminals of the power conversion unit is connected to each of the third transmission terminals of the first energy storage unit.

[0027] The power conversion unit is used to convert the first AC power input from the grid-side power source into a first DC power and a second AC power, and output the first DC power and the second AC power to each of the first energy storage units; and to convert the second DC power output from each of the first energy storage units into a third AC power, and output the third AC power to the grid-side power source.

[0028] The initial electrical energy is provided by the second alternating current or the first energy storage unit.

[0029] In one embodiment, the system further includes a second control unit;

[0030] The second control unit is also used to acquire the first power supply parameters of the grid-side power supply and the second power supply parameters of the energy storage device, and adjust the power supply to provide the initial electrical energy to the pulse generation unit based on the first power supply parameters and the second power supply parameters.

[0031] In one embodiment, the pulse generating unit includes at least a plurality of inductors and a plurality of switching transistors;

[0032] The inductor is used to convert the initial electrical energy into the first pulse current;

[0033] The switching transistor is used to turn on or off the path between the inductor and the first energy storage unit, the grid-side power supply, or the second energy storage unit.

[0034] A second aspect of this application provides an energy storage device, which includes at least one first energy storage unit and a pulse generation unit in the battery heating control system described in the first aspect above.

[0035] A third aspect of this application provides an electrical device, which includes a second energy storage unit, a pulse generation unit, and a first control unit in the battery heating control system described in the first aspect.

[0036] A fourth aspect of this application provides a battery heating control method, applied to any of the battery heating control systems provided in the first aspect above, the method comprising:

[0037] The energy storage device receives and parses the heating command, and determines the preset heating threshold indicated by the heating command;

[0038] The first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit in the energy storage device;

[0039] The pulse generation unit outputs the first pulse current to the energy storage unit to be heated, so that the energy storage unit to be heated heats up based on the internal resistance of the energy storage unit under the action of the first pulse current.

[0040] In one embodiment, where the system further includes a grid-side power source, the first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and a first temperature of the first energy storage unit within the energy storage device, including:

[0041] Determine whether the first temperature is less than the preset heating threshold;

[0042] If so, the first power supply parameters of the grid-side power supply and the second power supply parameters of the energy storage device are obtained, and the power supply of the grid-side power supply or each of the first energy storage units to the pulse generation unit is controlled based on the first power supply parameters and the second power supply parameters to provide the initial electrical energy, so that the pulse generation unit generates the first pulse current.

[0043] In one embodiment, where the system further includes electrical equipment, and the electrical equipment includes a motor, the first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and a first temperature of the first energy storage unit within the energy storage device, including:

[0044] The pulse generation unit is controlled to generate a third pulse current, and the third pulse current is output to the second energy storage unit in the electrical equipment.

[0045] Determine whether the first temperature meets the first preset temperature range;

[0046] If so, the first energy storage unit is connected to the pulse generation unit, and a first preset heating strategy is determined according to the first temperature. The first preset heating strategy is used to indicate the heating rate, heating power and / or heating current value when heating the first energy storage unit.

[0047] The first output parameter of the pulse generation unit is adjusted based on the first preset heating strategy, and the current output by the pulse generation unit is used as the first pulse current.

[0048] In one embodiment, if the electrical device includes at least two motors, and the electrical device generates a first pulse current through a pulse generation unit based on a first temperature of the first energy storage unit, specifically including:

[0049] Connect the first energy storage unit to the pulse generation unit;

[0050] If it is determined that the first temperature meets the first preset temperature range, a second preset heating strategy is determined based on the first temperature;

[0051] The second output parameter of the pulse generation unit is adjusted based on the second preset heating strategy, and the pulse current generated by the pulse generation unit based on the second output parameter is output to the first energy storage unit so that the first energy storage unit heats up.

[0052] If it is determined that the second temperature of the second energy storage unit in the electrical equipment meets the second preset temperature range, a third preset heating strategy is determined based on the second temperature.

[0053] The third output parameter of the pulse generation unit is adjusted based on the third preset heating strategy, and the pulse current generated by the pulse generation unit based on the third output parameter is output to the second energy storage unit so that the second energy storage unit heats up.

[0054] In one embodiment, where the system further includes electrical equipment, the method further includes:

[0055] In response to the heating command, a first energy storage unit that needs to be connected to the electrical equipment is determined;

[0056] The operating parameters of the first energy storage unit to be heated are obtained, and the heating components in the energy storage device are controlled to generate heat according to the operating parameters; the operating parameters include at least one of the following: voltage, current, temperature and remaining power.

[0057] In response to detecting that the electrical device is connected to the current conversion unit within a preset time period, it is determined that the first energy storage unit is connected to the electrical device through the current conversion unit.

[0058] A fifth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the battery heating control method described in the fourth aspect above.

[0059] The beneficial effects of the embodiments of this application include:

[0060] This application provides a battery heating control system, which includes an energy storage device, at least one pulse generating unit, and a first control unit. The energy storage device includes at least one first energy storage unit. The first terminal of the pulse generating unit is used to input initial electrical energy, the second terminal of the pulse generating unit is connected to the first energy storage unit to be heated, and the control terminal of the pulse generating unit is connected to the first control unit.

[0061] The pulse generation unit is used to generate a first pulse current under the control of the first control unit, and to output the first pulse current to the first energy storage unit to be heated. The first energy storage unit to be heated is heated based on its internal resistance under the action of the first pulse current.

[0062] It is understood that since pulse heating results in less energy loss during heat transfer and can distribute the heat generated inside the first energy storage unit more evenly, the battery heating control system provided in this application embodiment can improve energy utilization efficiency and reduce the impact of temperature gradient on the first energy storage unit.

[0063] Furthermore, the system does not require additional heating components; it simply uses the first pulse current to pulse-heat the energy storage unit based on its own internal resistance. This reduces costs and the space occupied inside the system and / or energy storage device.

[0064] In this way, the heating power can be increased, energy consumption can be reduced, and costs and space usage can be reduced. Attached Figure Description

[0065] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 This is a schematic diagram of the structure of the first battery heating control system provided in the embodiments of this application;

[0067] Figure 2 This is a schematic diagram of the structure of a second battery heating control system provided in an embodiment of this application;

[0068] Figure 3This is a schematic diagram of the structure of a third battery heating control system provided in an embodiment of this application;

[0069] Figure 4 This is a schematic diagram of the structure of the fifth battery heating control system provided in the embodiments of this application;

[0070] Figure 5 This is a schematic diagram of the sixth battery heating control system provided in the embodiments of this application;

[0071] Figure 6 This is a schematic diagram of the structure of a pulse generation unit provided in an embodiment of this application;

[0072] Figure 7 A flowchart of the first battery heating control method provided in the embodiments of this application;

[0073] Figure 8 A flowchart of a second battery heating control method provided in the embodiments of this application;

[0074] Figure 9 A flowchart of a third battery heating control method provided in the embodiments of this application;

[0075] Figure 10 A flowchart of a fourth battery heating control method provided in an embodiment of this application. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0077] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0078] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0079] In the description of this application, it should be noted that the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0080] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0081] In related technologies, the charging and discharging performance of batteries is greatly affected by temperature. Especially in low-temperature environments, the internal resistance of the battery is high, which can lead to a decrease in charging and discharging efficiency and even increase the risk of lithium plating. Therefore, relevant technicians use methods such as natural battery heating, forced-air heating, heating equipment inside the battery pack, and liquid cooling system circulation heating to heat the batteries in energy storage power stations and new energy vehicles in order to ensure the charging and discharging efficiency of the batteries.

[0082] However, the solutions in the related technologies may have problems such as insufficient heating power and high energy consumption, and they also require additional heating devices, resulting in higher costs and space requirements.

[0083] Therefore, this application provides a battery heating control system, which includes an energy storage device, at least one pulse generating unit, and a first control unit. The energy storage device includes at least one first energy storage unit. Furthermore, the first terminal of the pulse generating unit is used to input initial electrical energy, the second terminal of the pulse generating unit is connected to the first energy storage unit to be heated, and the control terminal of the pulse generating unit is connected to the first control unit.

[0084] The pulse generation unit, under the control of the first control unit, generates a first pulse current and outputs the first pulse current to the first energy storage unit to be heated. The first energy storage unit to be heated heats up based on its internal resistance under the action of the first pulse current. This achieves the effects of increasing heating power, reducing energy consumption, and reducing cost and space occupation.

[0085] This application uses a battery heating control system for charging new energy vehicles as an example for illustration. However, it does not imply that this application can only be applied to scenarios involving charging new energy vehicles, and this application does not limit it in this regard.

[0086] The battery heating control system provided in the embodiments of this application will be explained in detail below.

[0087] Figure 1 A schematic diagram of a battery heating control system provided in this application. See also... Figure 1 This application provides a battery heating control system 100, which includes: an energy storage device 101, at least one pulse generation unit 102, and a first control unit 103. The energy storage device 101 includes at least one first energy storage unit 1011.

[0088] The first end of the pulse generating unit 102 is used to input initial electrical energy, the second end of the pulse generating unit 102 is connected to the first energy storage unit 1011 to be heated, and the control end of the pulse generating unit 102 is connected to the first control unit 103.

[0089] The pulse generation unit 102 is used to generate a first pulse current under the control of the first control unit 103, and to output the first pulse current to the first energy storage unit 1011 to be heated.

[0090] The first energy storage unit 1011 to be heated is used to generate heat based on the internal resistance of the first energy storage unit 1011 under the action of the first pulse current.

[0091] Optionally, the initial electrical energy may refer to the electrical energy that enables the pulse generation unit 102 to enter the working state and generate the first pulse current. Moreover, the initial electrical energy can be provided in any possible way. For example, it can be provided by other first energy storage units 1011 besides the first energy storage unit 1011 to be heated, or by other energy storage units in the system 100, or by the mains power network or power generation device connected to the energy storage device 101. This application embodiment does not limit this.

[0092] Optionally, the energy storage device 101 may include at least one energy storage cabinet, and each energy storage cabinet may include at least one first energy storage unit 1011. Each first energy storage unit 1011 may include multiple battery packs connected in series. Each battery pack may be a lithium battery or any other possible type of battery, and this application embodiment does not limit this.

[0093] In addition, the first energy storage unit 1011 to be heated may refer to the first energy storage unit 1011 among the first energy storage units 1011 of the energy storage device 101 that has a lower current temperature and needs to be charged or discharged.

[0094] Optionally, in this embodiment, the energy storage device 101 may also include a control unit with processing, control, calculation and communication functions. For example, the control unit can be used to detect any possible parameters such as temperature, voltage, current and remaining power of each battery pack in the energy storage device 101. This application embodiment does not limit this.

[0095] Optionally, the first control unit 103 can be any device with processing, control, and calculation functions. For example, the first control unit 103 may include at least one of the following: a battery management system (BMS), a microcontroller unit (MCU), or a vehicle control unit (VCU).

[0096] In addition, the first control unit 103 can be located at any possible location in the system 100. For example, the first control unit 103 can be located inside the energy storage device 101, outside the energy storage device 101, or in other devices that can communicate with the energy storage device 101. This application embodiment does not limit this.

[0097] For example, when it is determined that the energy storage device 101 and / or the first energy storage unit 1011 in the energy storage device 101 need to be heated, the first control unit 103 can send a corresponding control signal to the pulse generation unit 102 to control the pulse generation unit 102 to generate and output the first pulse current.

[0098] Furthermore, the first control unit 103 can output switching signals to the pulse generation unit 102 for controlling the switching transistor and other controllable switches to turn on or off, and can also output control signals to the pulse generation unit 102 for controlling the operation of the pulse generator. The specific implementation depends on the actual structure of the pulse generation unit 102, and this application embodiment does not limit this.

[0099] Optionally, the pulse generation unit 102 can be any circuit capable of generating pulse current, such as a pulse generator, a switching circuit, or a capacitor discharge circuit.

[0100] Furthermore, the system 100 may include one pulse generation unit 102, or two or more pulse generation units 102. For example, if the energy storage device 101 only needs to be connected to the corresponding electrical load, then only one pulse generation unit 102 can be provided. If the electrical load has the function of providing the initial electrical energy, then this pulse generation unit 102 can also be specifically provided in the electrical load. If the energy storage device 101 can be connected to the corresponding electrical load and other power sources such as the mains power network, then at least two pulse generation units 102 can be provided, specifically provided in the electrical load and the energy storage device 101 respectively. This application embodiment does not limit this.

[0101] Optionally, the first pulse current can be a sinusoidal current, or a rectangular or triangular current with positive and negative bands; this application embodiment does not limit this.

[0102] It is worth noting that when the first energy storage unit 1011 needs to be heated, the pulse generation unit 102 can directly output the first pulse current to the first energy storage unit 1011, or it can output the first pulse current to the energy storage device 101 through any other possible component.

[0103] In addition, since each energy storage unit generally has a certain internal resistance, after the first pulse current flows into the first energy storage unit 1011, because the first pulse current has two bands, positive and negative, the internal resistance of the first energy storage unit 1011 and the response of the first pulse current will generate a magnetic field inside the first energy storage unit 1011, which will generate eddy currents. The eddy currents will generate heat inside the first energy storage unit 1011, thereby realizing pulse heating.

[0104] It should be noted that, in order to more clearly explain the battery heating control system 100 provided in the embodiments of this application, the working principle of the system 100 is briefly described below:

[0105] In the initial state where each of the first energy storage units 1011 in the energy storage device 101 does not need to be charged or discharged, or does not need to be heated, the first control unit 103 will not output a signal to the pulse generation unit 102, and the pulse generation unit 102 will not output the first pulse signal to the first energy storage unit 1011. That is, under these circumstances, the first energy storage unit 1011 will not be pulse-heated.

[0106] When heating is required for the first energy storage unit 1011 and / or the energy storage device 101, the first control unit 103 can output a corresponding control signal to the pulse generation unit 102, so that the initial electrical energy is input to the pulse generation unit 102, and the pulse generation unit 102 is enabled to generate the first pulse current. If a certain first energy storage unit 1011 needs to be heated, the first pulse current is output to the first energy storage unit 1011 to be heated, or the first pulse current can also be output to the energy storage device 101 through other components.

[0107] In this case, the first energy storage unit 1011 in the energy storage device 101 can be heated by the internal resistance of the first energy storage unit 1011 under the action of the first pulse current.

[0108] In this way, pulse heating can be achieved for energy storage device 101 and / or first energy storage unit 1011.

[0109] It is worth noting that in this embodiment, the first pulse current can be generated by controlling the pulse generation unit 102 and output to the first energy storage unit 1011 to be heated, thereby realizing pulse heating of the first energy storage unit 1011. Since pulse heating results in less energy loss during heat transfer and can distribute the heat generated inside the first energy storage unit 1011 more evenly, the battery heating control system 100 provided in this application embodiment can improve energy utilization efficiency and reduce the impact of temperature gradient on the first energy storage unit 1011 and / or energy storage device 101.

[0110] Furthermore, the system 100 does not require additional heating components; it simply uses the first pulse current to pulse-heat the energy storage unit based on its own internal resistance. This reduces costs and the space occupied inside the system 100 and / or the energy storage device 101.

[0111] In this embodiment, an energy storage device 101, at least one pulse generation unit 102, and a first control unit 103 are provided in the battery heating control system 100. The energy storage device 101 includes at least one first energy storage unit 1011. Furthermore, the first terminal of the pulse generation unit 102 is used to input initial electrical energy, the second terminal of the pulse generation unit 102 is connected to the first energy storage unit 1011 to be heated, and the control terminal of the pulse generation unit 102 is connected to the first control unit 103.

[0112] The pulse generation unit 102 is used to generate a first pulse current under the control of the first control unit 103, and to output the first pulse current to the first energy storage unit 1011 to be heated. The first energy storage unit 1011 to be heated is used to generate heat based on the internal resistance of the first pulse current.

[0113] It is understood that since pulse heating results in less energy loss during heat transfer and can distribute the heat generated inside the first energy storage unit 1011 more evenly, the battery heating control system 100 provided in this application embodiment can improve energy utilization efficiency and reduce the impact of temperature gradient on the first energy storage unit 1011.

[0114] Furthermore, the system 100 does not require additional heating components; it simply uses the first pulse current to pulse-heat the energy storage unit based on its own internal resistance. This reduces costs and the space occupied inside the system 100 and / or the energy storage device 101.

[0115] In this way, the heating power can be increased, energy consumption can be reduced, and costs and space usage can be reduced.

[0116] In one possible implementation, see [link to relevant documentation]. Figure 2 The system 100 also includes a current conversion unit 104.

[0117] The first end of the current conversion unit 104 is connected to the second end of the pulse generation unit 102, and the second end of the current conversion unit 104 is connected to the first energy storage unit 1011 to be heated.

[0118] The current conversion unit 104 is used to output the first pulse current to the first energy storage unit 1011 to be heated.

[0119] Optionally, if the pulse generation unit 102 is located in another device connected to the energy storage device 101, then the current conversion unit 104 can be located within the charging device. If the pulse generation unit 102 is located inside the energy storage device 101, then the current conversion unit 104 can be located inside the energy storage device 101. This application embodiment does not impose any limitations on this.

[0120] Furthermore, the charging device may also include a third control unit with processing, control, calculation, and communication functions to enable the charging device to communicate with any other possible device.

[0121] In this embodiment, in addition to outputting the first pulse current generated by the pulse generation unit 102 to the energy storage device 101, the current conversion unit 104 can also be used to convert the first pulse current so that the pulse current output to the energy storage device 101 can meet the rated parameters of each battery pack in the energy storage device 101 and / or the first energy storage unit 1011.

[0122] For example, the current conversion unit 104 can adjust parameters such as the waveform, amplitude, and pulse frequency of the first pulse current, but this application embodiment does not limit this.

[0123] For example, the current conversion unit 104 can convert the first pulse current based on the parameters of each battery pack in the energy storage device 101. For instance, the first pulse current can be converted based on parameters such as the rated voltage, rated current, current temperature, and state of charge (remaining charge) of the battery pack currently connected to the electrical device X in the energy storage device 101.

[0124] Furthermore, one power terminal of the charging device can be connected to the corresponding output terminal of the energy storage device 101, or one power terminal of the charging device can be connected to the mains power grid or any other possible power source. That is to say, when the charging device is connected to other electrical loads in the system 100 and is used to charge other electrical loads, the charging device can use the power provided by the mains power grid to charge other electrical loads, or it can use the power provided by the energy storage device 101 to charge other electrical loads. This application embodiment does not limit this.

[0125] It is worth noting that the current conversion unit 104 can convert the first pulse current into a pulse current that meets the rated parameters of each battery pack in the energy storage device 101 and / or the first energy storage unit 1011. In this way, it can be ensured that the first energy storage unit 1011 to be heated can be pulse heated normally, and the problem of damage to the first energy storage unit 1011 due to mismatch of pulse current parameters can be avoided.

[0126] In one possible implementation, see [link to relevant documentation]. Figure 3 The system 100 also includes an electrical device X, a pulse generation unit 102 and a first control unit 103 which can be disposed in the electrical device X, and the electrical device X also includes a second energy storage unit 105.

[0127] The third terminal of the pulse generation unit 102 is connected to the second energy storage unit 105. The pulse generation unit 102 is also used to output the first pulse current to the second energy storage unit 105.

[0128] The second energy storage unit 105 is used to generate heat based on the internal resistance of the second energy storage unit 105 under the action of the first pulse current.

[0129] Optionally, the initial electrical energy is provided by the first energy storage unit 1011 or the second energy storage unit 105.

[0130] Optionally, the electrical device X can be any possible electrical appliance, such as a new energy vehicle, a drone, an unmanned boat, or any other possible device. Generally, since the electrical device X needs to generate pulse current, it can include inductors, motors with inductance, and / or batteries, etc., but this application embodiment does not limit this.

[0131] For example, the second energy storage unit 105 can be a battery with a large voltage and a large capacity in the electrical device X. For instance, if the electrical device X is a new energy vehicle, then the second energy storage unit 105 can be the power battery in that new energy vehicle.

[0132] In this embodiment, since the pulse generation unit 102 is disposed in the electrical device X, in order to further reduce the cost of the electrical device X and the space occupied by the pulse generation unit 102, a circuit capable of generating pulse current can be formed by using the switching transistor and the inductor in the electrical device X, so as to achieve the purpose of generating the first pulse current by reusing the inductor in the electrical device X.

[0133] Generally, if the initial electrical energy is provided by the second energy storage unit 105, then the second energy storage unit 105 can be regarded as the power supply side and the first energy storage unit 1011 as the power receiving side. In this case, the second energy storage unit 105 can be regarded as providing electrical energy to the first energy storage unit 1011 for pulse heating.

[0134] It is worth noting that in the initial state where the electrical device X is not connected to the energy storage device 101 through the current conversion unit 104, or does not need to charge the electrical device X or the energy storage device 101, or does not need to heat the second energy storage unit 105 and / or the energy storage device 101, the first control unit 103 will not output a signal to the pulse generation unit 102, and the pulse generation unit 102 will not output the first pulse signal to the second energy storage unit 105 and / or the current conversion unit 104. That is, in this case, pulse heating will not be performed on the first energy storage unit 1011 and / or the second energy storage unit 105.

[0135] When electrical device X is connected to energy storage device 101 via current conversion unit 104 and needs to heat the first energy storage unit 1011 and / or the second energy storage unit 105, electrical device X and energy storage device 101 are also connected via pulse generation unit 102. In this case, the first control unit 103 can output a corresponding control signal to the pulse generation unit 102 to enable the pulse generation unit 102 and generate the first pulse current. If the first energy storage unit 1011 needs to be heated, the first pulse current is output to the first energy storage unit 1011 via current conversion unit 104; if the second energy storage unit 105 needs to be heated, the first pulse current is output to the second energy storage unit 105.

[0136] In this way, the first pulse current can be generated by reusing the components inside electrical equipment X, which can reduce costs and the space occupied inside electrical equipment X.

[0137] In one possible implementation, see [link to previous section] Figure 3 The system 100 also includes a communication module 106.

[0138] The first end of the communication module 106 is connected to the second energy storage unit 105, and the second end of the communication module 106 is connected to the energy storage device 101.

[0139] The communication module 106 is used to enable the energy storage device 101 and the electrical device X to communicate via handshake.

[0140] Optionally, the communication module 106 can be a communication device that supports any possible communication protocol, such as a Controller Area Network (CAN) bus. This application embodiment does not limit this.

[0141] In addition, the communication module 106 can be installed in the energy storage device 101, the electrical device X, or the charging device mentioned above. This application embodiment does not limit this.

[0142] Optionally, the communication module 106 can also be used to send any possible parameters such as the temperature, voltage, current, and remaining capacity of each battery pack in the energy storage device 101 to the power user X when the energy storage device 101 and the power user X successfully handshake. Alternatively, it can send a switching control signal to the energy storage device 101 to switch the battery pack connected to the power user X. Other communication methods between the energy storage device 101 and the power user X can also be implemented, which are not limited in this embodiment.

[0143] This enables information exchange between the energy storage device 101 and the electrical device X, thereby improving the accuracy of heating control.

[0144] In one possible implementation, see [link to relevant documentation]. Figure 3 The energy storage device 101 includes multiple first energy storage units 1011 and power switching units 1012.

[0145] The first end of the power switching unit 1012 is connected to the second end of the communication module 106, and the second and third ends of the power switching unit 1012 are respectively connected to the first and second ends of each first energy storage unit 1011.

[0146] The second end of each first energy storage unit 1011 is also connected to the second end of the current conversion unit 104.

[0147] The power switching unit 1012 is used to connect or disconnect the path between each second energy storage unit 105 and the electrical device X.

[0148] Specifically, the power switching unit 1012 is used to turn on or off the connection lines between each first energy storage unit 1011 and the electrical device X when receiving a corresponding control signal (such as the switching control signal mentioned above), thereby achieving the purpose of switching the first energy storage unit 1011 connected to the electrical device X in the energy storage device 101.

[0149] Optionally, the power switching unit 1012 can be any possible switching chip or switching circuit, and the embodiments of this application do not limit this.

[0150] For example, the first energy storage unit 1011 may include multiple battery packs, and each battery pack may be connected in parallel or in series.

[0151] Generally, only one first energy storage unit 1011 in the energy storage device 101 can be connected to the electrical device X and supply power to the electrical device X. Alternatively, two or more first energy storage units 1011 in the energy storage device 101 can be connected to the electrical device X. This application embodiment does not limit this.

[0152] In addition, the current conversion unit 104 is specifically used to convert the first pulse current into a second pulse current and output the second pulse current to the first energy storage unit 1011.

[0153] The first energy storage unit 1011 is used to generate heat based on the second pulse current and the internal resistance of the energy storage unit 101 when the path between it and the electrical device X is turned on.

[0154] Optionally, the second pulse current may also be a sinusoidal current, a rectangular current with positive and negative bands, or a triangular current; this application embodiment does not limit this.

[0155] It should be understood that, since the parameters of the first pulse current directly output by the pulse generation unit 102 may differ from the parameters of the battery pack in the energy storage device 101, or the temperatures and other parameters of the first energy storage unit 1011 and the second energy storage unit 105 may differ, the first energy storage unit 1011 and the second energy storage unit 105 may also require different heating rates or heating powers. When the current conversion unit 104 converts the first pulse current into the second pulse current, outputting the first pulse current to the second energy storage unit 105 and the second pulse current to the first energy storage unit 101 allows for pulse heating of the second energy storage unit 105 and the energy storage device 101 under different operating conditions.

[0156] Furthermore, since the current conversion unit 104 can also convert the first pulse current based on the parameters of each battery pack in the energy storage device 101, it can also ensure that the energy storage device 101 will not be damaged or unable to heat properly due to the mismatch of the parameters of the first pulse current.

[0157] This improves the flexibility, safety, and practicality of the battery heating control system 100.

[0158] It is worth noting that, Figures 1-3The provided system 100 is merely an example and does not imply that the battery heating control system 100 provided in this application embodiment can only include two first energy storage units 1011. The number of first energy storage units 1011 can be set according to actual needs, and this application embodiment does not limit this.

[0159] It is worth noting that after the power switching unit 1012 operates, it can establish a connection between at least one first energy storage unit 1011 and the electrical device X. That is, at least one first energy storage unit 1011 can be connected to the electrical device X (directly or through the current conversion unit 104). In this case, the at least one first energy storage unit 1011 can supply power to the electrical device X, and the electrical device X can also output the aforementioned first pulse current or the aforementioned second pulse current to the at least one first energy storage unit 1011 connected to the electrical device X, so as to achieve the purpose of pulse heating of the at least one first energy storage unit 1011 connected to the electrical device X.

[0160] In one possible way, see [link / reference] Figure 3 The energy storage device 101 may also include multiple capacitors C.

[0161] Capacitor C is connected between the second terminal of the power switching unit 1012 and the first terminal of the first energy storage unit 1011, and / or, each capacitor C is connected between any two adjacent first energy storage units 1011. See [link to specific connection details] Figure 3 As shown, the embodiments in this application will not be described in detail.

[0162] It is worth noting that since each capacitor C is connected to the parallel branch of the energy storage device 101, each capacitor C can achieve the purpose of high-frequency equalization of each first energy storage unit 1011, thereby improving the stability of the system 100.

[0163] In one possible implementation, see [link to relevant documentation]. Figure 4 The system 100 also includes a grid-side power supply Y and a power conversion unit Z.

[0164] The first transmission terminal of the power conversion unit Z is used to connect to the grid-side power supply Y, and each of the second transmission terminals of the power conversion unit Z is connected to each of the third transmission terminals of each of the first energy storage units 1011.

[0165] The power conversion unit Z is used to convert the first AC power input from the grid-side power supply Y into a first DC power and a second AC power, and output the first DC power and the second AC power to each of the first energy storage units 1011. It is also used to convert the second DC power output from each of the first energy storage units 1011 into a third AC power, and output the third AC power to the grid-side power supply Y.

[0166] In this embodiment, the initial electrical energy is provided by the second alternating current or the first energy storage unit 1011.

[0167] Optionally, the first AC power may refer to the mains power output from the grid-side power supply Y-direction energy storage unit 101, specifically AC power with a voltage level of 220V or 380V and a frequency of 50HZ.

[0168] The first direct current can be used to charge each of the first energy storage units 1011. The second alternating current can be used to provide initial power to the pulse generation unit 102. The voltage levels and other parameters of the first direct current and the second alternating current can be set according to actual needs, and this application embodiment does not limit this.

[0169] Optionally, the second DC power may refer to the electrical energy used by the energy storage device 101 to compensate the grid-side power source Y. The third AC power may be the electrical energy used to convert the second DC power so that it can be connected to the grid-side power source Y. Generally, the parameters of the third AC power can be the same as the parameters of the first AC power, and this application embodiment does not limit this.

[0170] As can be seen, by converting and transmitting electrical energy between the grid-side power supply Y and the energy storage device 101 through the power conversion unit Z, it is possible to achieve "peak shaving and valley filling" grid regulation of the grid-side power supply Y through the energy storage device 101, or to directly provide the energy storage device 101 with electrical energy for pulse heating through the grid-side power supply Y.

[0171] For example, in Figure 4 Based on this, continue to see Figure 5 The power conversion unit Z may specifically include an AC-DC module for converting a first AC power into DC power and outputting the DC power to subsequent circuits; a DC-DC module 1 and a DC-DC module 2 for converting the DC power output from the AC-DC module into a first DC power of other voltage levels and outputting the first DC power to the corresponding first energy storage unit 1011; and a DC-AC module 1 and a DC-AC module 2 for converting the DC power output from the AC-DC module into a second AC power and outputting the second AC power to the corresponding pulse generation unit 102.

[0172] In addition, DC-DC module 1 and DC-DC module 2 can also be used to convert the DC power output from each of the first energy storage units 1011 into a second DC power and output it to the AC-DC module. The AC-DC module can also be used to convert the second DC power into a third AC power and output the third AC power to the grid-side power supply Y.

[0173] Understandable Figure 5The power conversion unit Z shown is merely an example and does not represent that the power conversion unit Z provided in the embodiments of this application can only be... Figure 5 The structure shown is not limited to the embodiments of this application.

[0174] In one possible implementation, see [link to previous section] Figure 4 The system 100 also includes a second control unit.

[0175] The second control unit is also used to acquire the first power supply parameters of the grid-side power supply Y and the second power supply parameters of the energy storage device 101, and adjust the power supply to provide the initial electrical energy to the pulse generation unit 102 based on the first power supply parameters and the second power supply parameters.

[0176] Optionally, the first power supply parameter may include any possible parameters such as the current voltage level of the grid-side power source Y, the load pressure, and the current grid electricity price.

[0177] The second power supply parameter may include any possible parameters such as the current voltage level, remaining power, load pressure, average electricity price of energy storage device 101, real-time temperature, and real-time current.

[0178] Additionally, the second control unit can be located inside or outside the energy storage device 101. Specifically, it may include a battery information acquisition unit, a battery management unit (BMU), and a Wi-Fi unit and Bluetooth unit for wireless communication with external devices, used to acquire real-time information such as the battery pack's temperature (T), voltage (U), and current (I). This application does not limit this specific configuration.

[0179] For example, adjusting the power supply that provides the initial power to the pulse generation unit 102 based on the first power supply parameter and the second power supply parameter can specifically mean: by obtaining the current grid electricity price of the grid-side power supply Y and the average electricity price of the energy storage device 101, and then determining the power supply with the lower electricity price to provide the initial power to the pulse generation unit 102.

[0180] The current grid electricity price can refer to the grid electricity price at the current moment. The average energy storage price can refer to the average price of the remaining electricity stored in the energy storage device 101, which can be calculated by averaging the electricity prices of each time period during charging in any possible way. This application embodiment does not limit this.

[0181] For example, the power supply that provides the initial power to the pulse generation unit 102 based on the first power supply parameter and the second power supply parameter can also refer to: continuously acquiring the first power supply parameter and the second power supply parameter for a certain period of time, so as to determine the power supply stability parameter of the grid-side power supply Y and the power supply stability of the energy storage device 101 during this period of time, thereby enabling the power supply with a higher power supply stability to provide the initial power to the pulse generation unit 102.

[0182] In this way, a more suitable power source can be selected to provide the initial electrical energy based on the actual operating conditions of the grid-side power source Y and the energy storage device 101, which can improve the flexibility, stability and practicality of the system 100.

[0183] In one possible implementation, the pulse generation unit 102 may include at least a plurality of inductors and a plurality of switching transistors.

[0184] The inductor is used to convert the initial electrical energy into the first pulse current.

[0185] The switching transistor is used to turn on or off the path between the inductor and the grid-side power supply Y, the first energy storage unit 1011, or the second energy storage unit 105.

[0186] In this embodiment, the number of inductors and switching transistors can be set according to actual needs, and this application embodiment does not limit this.

[0187] For example, if the pulse generating unit 102 is disposed in the electrical device X, and the electrical device X is a vehicle with a motor, then the inductor can be the inductance of the motor in the electrical device X. Furthermore, the electrical device X may include one motor or two motors, or even a greater number of motors; this embodiment does not limit this.

[0188] This motor refers to a device that converts electrical energy into mechanical energy and vice versa. When converting electrical energy into mechanical energy, the motor exhibits the operating characteristics of an electric motor; when converting mechanical energy into electrical energy, the motor exhibits the operating characteristics of a generator.

[0189] It is worth noting that the basic principle of generating pulse current based on this inductor is to utilize the self-inductance characteristic of the inductor. That is, when the current flowing through the inductor changes, the inductor will generate a self-induced electromotive force in the opposite direction to the original current, thereby hindering the change of current, and thus a pulse current can be generated based on the inductor.

[0190] In one possible way, Figure 6 A schematic diagram of a possible pulse generation unit 102 is shown. See [link / reference] Figure 6 , Figure 6The pulse generation unit 102 provided can be installed in the electrical equipment X. The pulse generation unit 102 includes inductors L1, L2, L3, and switching transistors M1, M2, M3, M4, M5, and M6.

[0191] In this embodiment, each switch can be an N-channel switch, and generally the parameters of each switch can be the same. This application does not limit this.

[0192] In this embodiment, Figure 6 The document also shows controllable switches K1, K2, and K3, as well as a first battery pack B1 and a second battery pack B2. Figure 6 For the specific connection relationships between the various components shown, please refer to [link / reference]. Figure 6 As shown, the embodiments of this application will not be described in detail here.

[0193] Optionally, the gate of each switch can be connected to the first control unit 103, so that the first control unit 103 can output corresponding control signals to control each switch to be turned on or off. In addition, the control terminals of controllable switches K1, K2, and K3 can also be connected to the first control unit 103, so that the first control unit 103 can output corresponding control signals to control each controllable switch to be turned on or off.

[0194] Optionally, the first battery pack B1 can be any battery pack in the first energy storage unit 1011 or any battery pack in the second energy storage unit 105. The second battery pack B2 can be any battery pack in the first energy storage unit 1011 or any battery pack in the second energy storage unit 105.

[0195] Generally, it is sufficient to ensure that the first battery pack B1 and the second battery pack B2 are not the same battery pack. Moreover, the first battery pack B1 can generally contain only one battery pack, while the second battery pack B2 can contain one or more battery packs. This application does not limit this aspect.

[0196] It should be noted that, assuming the first pulse current is a sinusoidal current, the working principle of the pulse generation unit 102 provided in this embodiment is as follows:

[0197] When the first battery pack B1 and the second battery pack B2 are not connected between controllable switches K1, K2, and K3, or when the first battery pack B1 and the second battery pack B2 are not discharging externally, no current flows into the pulse generation unit 102, and the first control unit 103 does not need to output corresponding control signals to each switch or controllable switch. At this time, no current flows through inductors L1, L2, and L3, and therefore the first pulse signal is not output.

[0198] When the first battery pack B1 and the second battery pack B2 are connected between controllable switches K1, K2, and K3, and either the first battery pack B1 or the second battery pack B2 is discharging externally, if the first battery pack B1 is discharging externally, the first control unit 103 first controls controllable switches K1 and K3 to conduct, and controls switching transistors M1, M2, and M3 to conduct. At this time, the current output by the first battery pack B1 flows through controllable switches K1, M1, M2, and M3 into inductors L1, L2, and L3 respectively, and then flows through controllable switch K3 to the first battery pack B1 and the second battery pack B2.

[0199] Then, the first control unit 103 controls controllable switches K1 and K3, and switching transistors M1, M2, and M3 to turn off, thereby controlling controllable switches K2 and K3 to turn on, and controlling switching transistors M4, M5, and M6 to turn on. At this time, the electrical energy stored inside inductors L1, L2, and L3 forms a path with the second battery pack B2 through controllable switches K1 and K3, and switching transistors M1, M2, and M3. In this way, a pulse current can be output to the second battery pack B2.

[0200] By repeating this process multiple times, the purpose of continuously outputting the aforementioned first pulse current to the second battery pack B2 can be achieved.

[0201] It is worth noting that during the above-mentioned output pulse current process, the first battery pack B1 outputs electrical energy, while the second battery pack B2 receives electrical energy. That is, in the above example, the second battery pack B2 is pulse-heated.

[0202] In another possible implementation, the pulse generating unit 102 may also include the aforementioned controllable switches K1, K2, and K3. Alternatively, the controllable switches K1, K2, and K3 may be respectively disposed on the connection lines between the pulse generating unit 102 and the corresponding battery pack. This application embodiment does not limit this aspect.

[0203] It is worth noting that, since the first battery pack B1 and the second battery pack B2 provided in this application embodiment can be either the battery pack in the first energy storage unit 1011 or the battery pack in the second energy storage unit 105, respectively, in the system 100 provided in this application embodiment, by changing the battery pack connected to the pulse generation unit 102 through a corresponding switch, the battery pack or energy storage unit performing pulse heating can be changed, or the battery pack or energy storage unit providing energy for pulse heating can be changed.

[0204] In this way, not only can one battery pack in the first energy storage unit 1011 provide energy for pulse heating to the other battery packs in the first energy storage unit 1011 and / or the battery packs in the second energy storage unit 105, but also one battery pack in the second energy storage unit 105 can provide energy for pulse heating to the other battery packs in the second energy storage unit 105 and / or the battery packs in the first energy storage unit 1011.

[0205] In other words, this allows for the adjustment of energy distribution between the electrical device X and the energy storage device 101, avoiding the problem of over-discharge that might occur in either the electrical device X or the energy storage device 101 if the device only discharges through the electrical device X or the energy storage device 101.

[0206] In another possible embodiment, the pulse generation unit 102 disposed in the energy storage device 101 can also be connected to the above. Figure 6 The structure shown is the same, but in this case, the inductors in the pulse generation unit 102 cannot reuse the motor inductors in the electrical equipment X. Instead, it is necessary to select and set appropriate inductors according to the circuit structure. This application embodiment does not limit this.

[0207] In another possible embodiment, if a pulse generation unit 102 is installed in the energy storage device 101, and the initial electrical energy for this pulse generation unit 102 is provided by the grid-side power supply Y, then it is possible to... Figure 6 The first battery pack B1 shown is replaced by a power conversion unit Z corresponding to the grid-side power supply Y, which is used to output the second AC power mentioned above.

[0208] In this way, the grid-side power supply Y can provide the energy storage device 101 with the first pulse current for pulse heating, which can improve the practicality of the system 100. At the same time, it can also avoid the problem of over-discharge of each first energy storage unit 1011 and / or second energy storage unit 105 in the energy storage device 101.

[0209] In addition, this application embodiment also provides an energy storage device, which may include at least one first energy storage unit and a pulse generation unit in the battery heating control system 100 provided in any of the above embodiments.

[0210] Optionally, the energy storage device may be the energy storage device 101 provided in any of the above embodiments, and may also include a power switching unit and other possible devices. This application embodiment does not limit this.

[0211] For example, the pulse generation unit included in the energy storage device may refer to a pulse generation unit 102 provided in any of the above embodiments, which is installed in the energy storage device 101 and is used to generate a first pulse current based on the electrical energy output by the first energy storage unit in the energy storage device 101, the electrical energy output by the second energy storage unit in the electrical device, and the electrical energy output by the grid-side power supply.

[0212] For ease of distinction, the pulse generating unit included in the energy storage device can be designated as the first pulse generating unit. Specifically, the input terminal of the first pulse generating unit is connected to the aforementioned grid-side power supply, and the output terminal of the first pulse generating unit is connected to the input terminal of each first energy storage unit.

[0213] In addition, this application embodiment also provides an electrical device, which may include the second energy storage unit, pulse generation unit and first control unit in the battery heating control system 100 provided in any of the above embodiments.

[0214] Optionally, the electrical equipment can be the electrical equipment X provided in any of the above embodiments, such as a vehicle including a motor. Specifically, it can also include any other possible devices, which are not limited in this application.

[0215] For example, the pulse generating unit included in the electrical device may refer to: a pulse generating unit 102 provided in any of the above embodiments, which is installed in the electrical device X and is used to generate a first pulse current based on the electrical energy output by the first energy storage unit in the energy storage device 101 and the electrical energy output by the second energy storage unit in the electrical device.

[0216] For ease of distinction, the pulse generating unit included in the electrical equipment can be designated as the second pulse generating unit. Specifically, the first end of the second pulse generating unit is connected to the second energy storage unit, the second end of the second pulse generating unit is connected to the energy storage device, and the third end of the second pulse generating unit is connected to the first control unit.

[0217] It is understood that the electrical equipment and energy storage device provided above belong to the same design concept as any of the battery heating control systems 100 provided in the foregoing embodiments, and their working principles and technical effects are the same. For details, please refer to the above description. The embodiments of this application will not be repeated here.

[0218] The following describes the battery heating control method, device, and computer-readable storage medium corresponding to the battery heating control system provided in this application. The specific implementation process and technical effects can be found above, and will not be repeated below.

[0219] Figure 7 This is a flowchart illustrating a battery heating control method provided in an embodiment of this application. This battery heating control method can be executed by any possible control unit in the battery heating control system 100 described above; this embodiment does not limit its execution. See also... Figure 7 The method includes:

[0220] Step 2001: The energy storage device receives and parses the heating command, and determines the preset heating threshold indicated by the heating command.

[0221] The energy storage device may be the aforementioned energy storage device 101.

[0222] Optionally, the heating command may be generated by relevant technicians or users by triggering the corresponding touch device or terminal device.

[0223] There is a communication connection between the touch device or the terminal device and the energy storage device, that is, the touch device or the terminal device can send signals, information and / or instructions to the energy storage device.

[0224] In addition to indicating the preset heating threshold, the heating command can specifically be used to indicate one or more first energy storage units selected by the user that need to charge the electrical device, to indicate the user's desired charging time, or to indicate any possible information such as the user-selected charging mode and charging power. This application embodiment does not limit this.

[0225] The preset heating threshold may refer to the temperature value that the user expects to heat the first energy storage unit in the energy storage device to, or it may refer to the temperature value that enables each first energy storage unit to charge and discharge normally.

[0226] Step 2002: The first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit in the energy storage device.

[0227] Optionally, the first control unit may be the first control unit 103 described above, the electrical device may be the electrical device X described above, and the pulse generating unit may refer to the pulse generating unit 102 described above.

[0228] Optionally, the first temperature may refer to the temperature of each battery pack in the first energy storage unit connected to the electrical device at the current moment.

[0229] Furthermore, the first temperature of the energy storage device can be obtained in any possible way. For example, the first temperature can be obtained by sending a temperature acquisition command to the energy storage device through the aforementioned communication module, receiving and parsing the temperature data sent by the energy storage device. The electrical device can also obtain the first temperature by contacting the aforementioned charging device. This application does not limit this aspect.

[0230] Specifically, controlling the pulse generating unit to generate the first pulse current can refer to: determining whether the first energy storage unit needs to be heated based on the first temperature, and / or determining heating parameters such as heating rate and power for heating the first energy storage unit based on the first temperature; and generating a corresponding first pulse current according to the heating parameters.

[0231] In this way, it is possible to accurately determine whether heating is needed based on the first energy storage unit, and the parameters of pulse heating can be precisely controlled by changing the waveform of the generated first pulse current. This improves the practicality of the battery heating control method provided in this application embodiment.

[0232] Step 2003: The pulse generating unit outputs the first pulse current to the energy storage unit to be heated, so that the energy storage unit to be heated heats up based on the internal resistance of the energy storage unit under the action of the first pulse current.

[0233] Optionally, the first pulse current can also be output to the energy storage unit to be heated via the aforementioned power conversion unit. Furthermore, the power conversion unit can convert the first pulse current into a second pulse current as provided in the above embodiments; this application does not limit this specific conversion.

[0234] It is worth noting that the battery heating control method provided in this application embodiment can generate the first pulse current by controlling the pulse generation unit and outputting the first pulse current to the first energy storage unit, thereby realizing pulse heating of the first energy storage unit. Since pulse heating results in less energy loss during heat transfer and can distribute the heat generated inside the first energy storage unit more evenly, the battery heating control system provided in this application embodiment can improve energy utilization efficiency and reduce the impact of temperature gradient on the first energy storage unit and / or energy storage device.

[0235] Furthermore, not only is there no need to install additional heating components, but this also reduces costs and the space occupied inside the electrical equipment.

[0236] In this way, the heating power can be increased, energy consumption can be reduced, and costs and space usage can be reduced.

[0237] In one possible implementation, where the system also includes a grid-side power source, the first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit within the energy storage device, including:

[0238] Determine whether the first temperature is less than the preset heating threshold.

[0239] It is worth noting that if the first temperature is less than the preset heating threshold, it indicates that the first energy storage unit needs to be heated.

[0240] If so, the first power supply parameters of the grid-side power supply and the second power supply parameters of the energy storage device are obtained, and the power supply of the grid-side power supply or each of the first energy storage units to the pulse generation unit is controlled based on the first power supply parameters and the second power supply parameters, so that the pulse generation unit generates the first pulse current.

[0241] Optionally, the first power supply parameter may include any possible parameters such as the current voltage level of the grid-side power source, load pressure, and current grid electricity price.

[0242] The second power supply parameter can include any possible parameters such as the current voltage level of the energy storage device, remaining power, load pressure, average energy storage price, real-time temperature, and real-time current.

[0243] For example, the current grid electricity price of the grid-side power source and the average energy storage price of the energy storage device can be obtained to determine the power source with the lower electricity price to provide the initial power to the pulse generation unit.

[0244] Alternatively, the first power supply parameter and the second power supply parameter can be continuously acquired over a certain period of time to determine the power supply stability parameters of the grid-side power supply and the power supply stability of the energy storage device during this period of time, thereby enabling the power supply with a higher degree of power supply stability to provide the initial power to the pulse generation unit.

[0245] In this way, the appropriate pulse heating method can be selected by taking into account multiple factors such as electricity price and energy loss, which can improve the practicality of the method and reduce the cost of battery heating.

[0246] Since different electrical devices may have different structures—for example, some electrical devices may only include one motor, while others may include two or more motors—this application also provides a possible implementation method, see [link to implementation details]. Figure 8 If the system includes the electrical device, and the electrical device includes a motor, then the first control unit controls the pulse generating unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit in the energy storage device, including:

[0247] Step 2004: Control the pulse generation unit to generate a third pulse current and output the third pulse current to the second energy storage unit in the electrical equipment.

[0248] Optionally, the third pulse current may be a pulse current used to self-heat the second energy storage unit before pulse heating the first energy storage unit.

[0249] In addition, the waveform, amplitude and / or frequency of the third pulse current can be determined based on parameters such as the temperature, current, voltage and remaining power of the second energy storage unit.

[0250] Step 2005: Determine whether the first temperature meets the first preset temperature range.

[0251] Optionally, the first preset temperature range can be set by relevant technical personnel according to actual needs. For example, the first preset temperature range can be [-50℃, 30℃], or [-30℃, 0℃], or any other possible temperature range. This application embodiment does not limit this.

[0252] Generally, if the first temperature meets the first preset temperature range, it indicates that the first energy storage unit needs to be heated.

[0253] Step 2006: If so, connect the first energy storage unit to the pulse generation unit and determine the first preset heating strategy based on the first temperature.

[0254] Optionally, the first energy storage unit can be connected to the pulse generating unit. Specifically, this can mean connecting the battery pack in the first energy storage unit that needs to be heated to the above-mentioned connection. Figure 4 The corresponding positions shown are not limited in this embodiment.

[0255] Optionally, the first preset heating strategy is used to indicate the heating rate, heating power, and / or heating current value when heating the first energy storage unit.

[0256] Generally, the lower the first temperature, the greater the heating rate, heating power, and / or heating current value indicated by the first preset heating strategy.

[0257] Alternatively, different first preset heating strategies can be set according to the actual operating conditions of the battery. For example, if the first temperature is -20°C, the heating current indicated by the first preset heating strategy can be 200A, and the heating rate can be 1°C per minute. If the first temperature is -15°C, the heating current indicated by the first preset heating strategy can be 250A, and the heating rate can be 1.5°C per minute. This application does not limit this aspect.

[0258] It is worth noting that in the method provided in this application embodiment, the first temperature can be updated in real time or at intervals. Furthermore, after updating the first temperature, the first preset heating strategy can be re-determined based on the updated first temperature. This application embodiment does not limit this aspect.

[0259] Step 2007: Adjust the first output parameter of the pulse generation unit based on the first preset heating strategy, and use the current output by the pulse generation unit as the first pulse current.

[0260] Optionally, adjusting the first output parameter of the pulse generation unit can specifically refer to adjusting the output waveform, output amplitude, output frequency, etc. of the pulse generation unit, thereby changing the parameters of the first pulse current.

[0261] It is worth noting that this can improve the automation of battery heating control, and allow for adaptive selection of heating parameters to flexibly heat the second energy storage unit.

[0262] In one possible implementation, see [link to relevant documentation]. Figure 9 If the electrical equipment includes at least two motors, the electrical equipment generates a first pulse current through a pulse generation unit based on the first temperature of the first energy storage unit, specifically including:

[0263] Step 2008: Connect the first energy storage unit to the pulse generation unit.

[0264] Step 2009: If it is determined that the first temperature meets the first preset temperature range, a second preset heating strategy is determined based on the first temperature.

[0265] Optionally, the second preset heating strategy can also be used to indicate the heating rate, heating power, and / or heating current value when heating the first energy storage unit.

[0266] The second preset heating strategy may be the same as or different from the first preset heating strategy described above. This application embodiment does not limit this.

[0267] Step 2010: Adjust the second output parameter of the pulse generation unit based on the second preset heating strategy, and output the pulse current generated by the pulse generation unit based on the second output parameter to the first energy storage unit so that the second energy storage unit heats up.

[0268] Optionally, the second output parameter may be the same as or different from the first output parameter, and this application embodiment does not limit this.

[0269] Step 2011: If the second temperature of the second energy storage unit in the electrical equipment meets the second preset temperature range, a third preset heating strategy is determined based on the second temperature.

[0270] Optionally, the second temperature may refer to the temperature of each battery pack in the second energy storage unit at the current moment.

[0271] Optionally, the second preset temperature range can be set by relevant technical personnel according to actual needs. For example, the second preset temperature range can be [-50℃, 30℃], or [-30℃, 0℃], or any other possible temperature range. This application embodiment does not limit this.

[0272] Generally, if the second temperature meets the second preset temperature range, it indicates that the second energy storage unit needs to be heated.

[0273] Step 2012: Adjust the third output parameter of the pulse generation unit based on the third preset heating strategy, and output the pulse current generated by the pulse generation unit based on the third output parameter to the second energy storage unit so that the second energy storage unit heats up.

[0274] Optionally, adjusting the third output parameter of the pulse generation unit can specifically refer to adjusting the output waveform, output amplitude, output frequency, etc. of the pulse generation unit, thereby changing the parameters of the pulse current generated by the third output parameter.

[0275] It is worth noting that, in this embodiment, since there are two motors, the inductors of different motors can be reused to generate different pulse currents. For example, in the case of two motors, the pulse generation unit provided in this embodiment, installed in the electrical device, may include two such units. Figure 4 The circuits shown are configured such that the three inductors in these two circuits are located in the two motors respectively. Thus, the first energy storage unit and the second energy storage unit can be connected between controllable switches K2 and K3 in these two circuits respectively, thereby controlling the switching transistors in the two circuits to output different pulse currents.

[0276] It is worth noting that this can improve the automation of battery heating control, and the heating parameters of the first energy storage unit and the second energy storage unit can be adaptively adjusted based on different motors, so as to flexibly heat the first energy storage unit and the second energy storage unit separately.

[0277] In one possible implementation, the method further includes:

[0278] The electrical device continuously acquires the real-time temperature of the first energy storage unit.

[0279] Optionally, the real-time temperature may refer to the temperature of the battery pack in the first energy storage unit at the current moment.

[0280] When the electrical equipment determines that the real-time temperature meets the third preset temperature range, it controls the pulse generation unit to stop outputting the first pulse current to the first energy storage unit.

[0281] Optionally, the third preset temperature range can be set by relevant technical personnel according to actual needs. For example, the third preset temperature range can be [30℃, +∞], [0℃, +∞], or any other possible temperature range. Generally, the minimum value of the third preset temperature range is greater than or equal to the maximum value of the first preset temperature range, but this application embodiment does not limit this.

[0282] Under normal circumstances, if the real-time temperature meets the third preset temperature range, it indicates that the temperature of the first energy storage unit is high enough to charge and discharge normally, and there is no need to heat the first energy storage unit at present.

[0283] Optionally, if the real-time temperature is determined to meet the third preset temperature range, the electrical device may also output a reminder signal in any possible way to prompt the user that pulse heating has been stopped.

[0284] This allows pulse heating to be stopped when the temperature of the first energy storage unit is high, avoiding potential damage to the unit caused by continuous heating. Additionally, timely alert signals can be output to the user, providing effective heating warning assistance.

[0285] In one possible implementation, see [link to relevant documentation]. Figure 10 The method also includes:

[0286] Step 2013: In response to the heating command, determine the first energy storage unit that needs to be connected to the electrical equipment.

[0287] Optionally, in this case, if the heating command specifies the first energy storage unit that the user wishes to use, then the first energy storage unit that needs to be connected to the electrical device is the first energy storage unit specified by the heating command. If the heating command does not specify the first energy storage unit that the user wishes to use, then the first energy storage unit that needs to be connected to the electrical device can be any one of the energy storage devices that is functioning normally. This application does not limit this aspect.

[0288] Step 2014: Obtain the operating parameters of the first energy storage unit, and control the heating components in the energy storage device to generate heat according to the operating parameters.

[0289] Optionally, the operating parameters include at least one of the following: voltage, current, temperature, and remaining power.

[0290] Optionally, the heating component can refer to any possible component such as a heating film, heating resistor, heating wire, or hot air blower disposed in the energy storage device. Generally, the heating component can be located near the first energy storage unit to avoid excessive heat loss during heat transfer. Furthermore, the first energy storage unit can supply power to the heating component. This application embodiment does not limit this aspect.

[0291] Generally, the heating element in the energy storage device can be controlled to heat up when the temperature of the first energy storage unit is low, the remaining power is high, and the voltage and / or current are within the normal range. Specifically, parameters such as the heating power of the heating element can be adjusted according to these operating parameters; for example, a lower temperature allows for a higher heating power. This application does not limit this specific approach.

[0292] Step 2015: In response to detecting that the electrical device is connected to the charging device within a preset time period, it is determined that the first energy storage unit is connected to the electrical device through the charging device.

[0293] Optionally, the preset duration can be set by relevant technical personnel according to actual needs, or it can be the waiting time indicated in the heating instruction.

[0294] Under normal circumstances, if the connection between the electrical device and the charging device is not detected within a preset time period, it can be determined that the user has failed to connect the electrical device to the charging device, or that there is a connection failure between the electrical device and the charging device.

[0295] In addition, steps 2013-2015 can be executed before step 2002, or in any other possible order, and this application embodiment does not limit this.

[0296] It is worth noting that if the connection between the power device and the charging device is not detected within a preset time period, the energy storage device and / or the charging device can enter a dormant state to save energy consumption. This application embodiment does not limit this.

[0297] In addition, the battery heating control method provided in this application embodiment may also include any other possible steps to achieve all the functions and effects that the battery heating control system 100 described above can achieve, and this application embodiment does not limit this.

[0298] This application embodiment also provides a possible battery heating control device, the device comprising:

[0299] The connection confirmation module is used to receive and parse heating commands through the energy storage device and determine the preset heating threshold indicated by the heating command.

[0300] The pulse generation module is used to control the pulse generation unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit in the energy storage device, through the first control unit.

[0301] A heating module is used to output a first pulse current to the energy storage unit to be heated through the pulse generation unit, so that the energy storage unit to be heated heats up based on the internal resistance of the energy storage unit under the action of the first pulse current.

[0302] The above-described device is used to execute the method provided in the foregoing embodiments, and its implementation principle and technical effect are similar, so they will not be described again here.

[0303] These modules can be one or more integrated circuits configured to implement the above methods, such as one or more Application Specific Integrated Circuits (ASICs), one or more microprocessors, or one or more Field Programmable Gate Arrays (FPGAs). Alternatively, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together as a system-on-a-chip (SOC).

[0304] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the steps in the various method embodiments described above.

[0305] Optionally, this application also provides a program product, such as a computer-readable storage medium, including a program that, when executed by a processor, performs any of the above-described battery heating control method embodiments.

[0306] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0307] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0308] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0309] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute partial steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0310] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0311] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery heating control system, characterized in that, The system includes: an energy storage device, at least one pulse generation unit, a first control unit, a current conversion unit, a grid-side power supply, a power conversion unit, and electrical equipment; the energy storage device includes at least one first energy storage unit; the electrical equipment further includes a second energy storage unit; The first end of the pulse generating unit is used to input initial electrical energy, the second end of the pulse generating unit is connected to the first energy storage unit to be heated, and the control end of the pulse generating unit is connected to the first control unit; the pulse generating unit is used to generate a first pulse current under the control of the first control unit, and to output the first pulse current to the first energy storage unit to be heated respectively. The first energy storage unit to be heated is used to generate heat based on the internal resistance of the first energy storage unit under the action of the first pulse current; The first transmission terminal of the power conversion unit is used to connect to the grid-side power supply, and each of the second transmission terminals of the power conversion unit is connected to each of the third transmission terminals of the first energy storage unit. The power conversion unit is used to convert the first AC power input from the grid-side power source into a first DC power and a second AC power, and output the first DC power and the second AC power to each of the first energy storage units; and to convert the second DC power output from each of the first energy storage units into a third AC power, and output the third AC power to the grid-side power source. The initial electrical energy is provided by the second alternating current or the first energy storage unit.

2. The battery heating control system as described in claim 1, characterized in that, The first end of the current conversion unit is connected to the second end of the pulse generation unit, and the second end of the current conversion unit is connected to the first energy storage unit to be heated. The current conversion unit is used to output the first pulse current to the first energy storage unit to be heated.

3. The battery heating control system as described in claim 2, characterized in that, The pulse generation unit and the first control unit are disposed in the electrical equipment; The third terminal of the pulse generating unit is connected to the second energy storage unit, and the pulse generating unit is also used to output the first pulse current to the second energy storage unit. The second energy storage unit is used to generate heat based on the internal resistance of the second energy storage unit under the action of the first pulse current; The initial electrical energy is provided by either the first energy storage unit or the second energy storage unit.

4. The battery heating control system as described in claim 3, characterized in that, The system also includes a communication module; The first end of the communication module is connected to the second energy storage unit, and the second end of the communication module is connected to the energy storage device; The communication module is used to enable the energy storage device and the power consumption device to communicate via a handshake.

5. The battery heating control system as described in claim 4, characterized in that, The energy storage device includes multiple first energy storage units and a power switching unit; The first end of the power switching unit is connected to the second end of the communication module, and the second and third ends of the power switching unit are respectively connected to the first and second ends of each of the first energy storage units; the power switching unit is used to connect or disconnect the path between each of the first energy storage units and the electrical equipment. The second end of each of the first energy storage units is also connected to the second end of the current conversion unit; Specifically, the current conversion unit is used to convert the first pulse current into a second pulse current and output the second pulse current to the first energy storage unit; the first energy storage unit is used to generate heat based on the second pulse current and the internal resistance of the energy storage unit when the path between it and the electrical equipment is connected.

6. The battery heating control system as described in claim 1, characterized in that, The system also includes a second control unit; The second control unit is also used to acquire the first power supply parameters of the grid-side power supply and the second power supply parameters of the energy storage device, and adjust the power supply to provide the initial electrical energy to the pulse generation unit based on the first power supply parameters and the second power supply parameters.

7. The battery heating control system according to any one of claims 1-6, characterized in that, The pulse generation unit includes at least multiple inductors and multiple switching transistors; The inductor is used to convert the initial electrical energy into the first pulse current; The switching transistor is used to turn on or off the path between the inductor and the first energy storage unit, the grid-side power supply, or the second energy storage unit.

8. A battery heating control method, characterized in that, The method is applied to the battery heating control system according to any one of claims 1-7, the battery heating control system comprising an energy storage device, a pulse generation unit, and a first control unit, the energy storage device comprising at least one energy storage unit; the method comprises: The energy storage device receives and parses the heating command, and determines the preset heating threshold indicated by the heating command; The first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit in the energy storage device; The pulse generation unit outputs the first pulse current to the energy storage unit to be heated, so that the energy storage unit to be heated heats up based on the internal resistance of the energy storage unit under the action of the first pulse current. Where the system also includes a grid-side power source, the first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit within the energy storage device, including: Determine whether the first temperature is less than the preset heating threshold; If so, the first power supply parameters of the grid-side power supply and the second power supply parameters of the energy storage device are obtained, and the power supply of the grid-side power supply or each of the first energy storage units to the pulse generation unit is controlled based on the first power supply parameters and the second power supply parameters to provide the initial electrical energy, so that the pulse generation unit generates the first pulse current.

9. The battery heating control method as described in claim 8, characterized in that, In the case where the system also includes electrical equipment, and the electrical equipment includes a motor, the first control unit controls the pulse generation unit to generate a first pulse current based on the preset heating threshold and the first temperature of the first energy storage unit within the energy storage device, including: The pulse generation unit is controlled to generate a third pulse current, and the third pulse current is output to the second energy storage unit in the electrical equipment. Determine whether the first temperature meets the first preset temperature range; If so, the first energy storage unit is connected to the pulse generation unit, and a first preset heating strategy is determined according to the first temperature. The first preset heating strategy is used to indicate the heating rate, heating power and / or heating current value when heating the first energy storage unit. The first output parameter of the pulse generation unit is adjusted based on the first preset heating strategy, and the current output by the pulse generation unit is used as the first pulse current.

10. The battery heating control method as described in claim 8, characterized in that, If the electrical equipment includes at least two motors; the electrical equipment generates a first pulse current based on a first temperature of the first energy storage unit through a pulse generation unit in the electrical equipment, specifically including: Connect the first energy storage unit to the pulse generation unit; If it is determined that the first temperature meets the first preset temperature range, a second preset heating strategy is determined based on the first temperature; The second output parameter of the pulse generation unit is adjusted based on the second preset heating strategy, and the pulse current generated by the pulse generation unit based on the second output parameter is output to the first energy storage unit so that the first energy storage unit heats up. If it is determined that the second temperature of the second energy storage unit in the electrical equipment meets the second preset temperature range, a third preset heating strategy is determined based on the second temperature. The third output parameter of the pulse generation unit is adjusted based on the third preset heating strategy, and the pulse current generated by the pulse generation unit based on the third output parameter is output to the second energy storage unit so that the second energy storage unit heats up.

11. The battery heating control method as described in claim 8, characterized in that, If the system also includes electrical equipment, the method further includes: In response to the heating command, a first energy storage unit that needs to be connected to the electrical equipment is determined; The operating parameters of the first energy storage unit to be heated are obtained, and the heating components in the energy storage device are controlled to generate heat according to the operating parameters; the operating parameters include at least one of the following: voltage, current, temperature and remaining power. In response to detecting that the electrical device is connected to the current conversion unit within a preset time period, it is determined that the first energy storage unit is connected to the electrical device through the current conversion unit.

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