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

Abstract

The invention provides a battery heating control system, energy storage equipment, electric equipment and a control method, and belongs to the technical field of battery heating. An energy storage device, at least one pulse generation unit and a first control unit are arranged in the system. The energy storage equipment comprises at least one first energy storage unit; the first end of the pulse generation unit is used for inputting initial electric energy, the second end of the pulse generation unit is connected with the first energy storage unit to be heated, and the control end of the pulse generation unit is connected with the first control unit; the pulse generation unit is used for generating first pulse current under the control of the first control unit and outputting the first pulse current to the first energy storage unit to be heated; the to-be-heated first energy storage unit is used for heating based on the internal resistance of the to-be-heated first energy storage unit under the action of the first pulse current. The effects of improving the heating power, reducing the energy consumption, reducing the cost and reducing the occupied space can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of battery heating, and in particular to a battery heating control system, an energy storage device, an electrical device and a control method. Background Art

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

[0003] In the related technologies, the charging and discharging performance of the battery is greatly affected by the temperature, especially in low temperature environment, the internal resistance of the battery is large, which will lead to a decrease in charging and discharging efficiency, and even increase the risk of lithium precipitation. Therefore, the related technicians will use natural heating of the battery, blast heating, heating of the heating equipment in the battery pack, and circulation heating of the liquid cooling system to heat the batteries in the energy storage power station and the batteries in the new energy vehicles to ensure the charging and discharging efficiency of the battery.

[0004] However, the solutions in the related art may have problems of insufficient heating power and high energy consumption, and require the installation of additional heating devices, which also leads to high costs and space occupation. Summary of the invention

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

[0006] The embodiment of the present application is implemented as follows:

[0007] In a first aspect of an embodiment of the present application, a battery heating control system is provided, 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 electric 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 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 to be heated under the action of the first pulse current.

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

[0012] The first end of the current conversion unit is connected to the second end of the pulse generating 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 electric device, the pulse generating unit and the first control unit are arranged in the electric device, and the electric device further includes a second energy storage unit;

[0015] The third end of the pulse generating unit is connected to the second energy storage unit, and the pulse generating unit is further 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 electric energy is provided by the first energy storage unit or the second energy storage unit.

[0018] In one embodiment, the system further comprises 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 handshake communication between the energy storage device and the power-consuming device.

[0021] In one embodiment, the energy storage device includes a plurality of the 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 end and the third end of the power switching unit are respectively connected to the first end and the second end of each of the first energy storage units; the power switching unit is used to open or close 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] Among them, the current conversion unit 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; the first energy storage unit is used to generate heat based on the second pulse current and the internal resistance of the energy storage device when the path between the first energy storage unit and the electrical equipment is turned on.

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

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

[0027] The power conversion unit is used to convert the first alternating current input from the grid-side power supply into a first direct current and a second alternating current, and output the first direct current and the second alternating current to each of the first energy storage units, and to convert the second direct current output from each of the first energy storage units into a third alternating current, and output the third alternating current to the grid-side power supply;

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

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

[0030] The second control unit is also used to obtain a first power supply parameter of the grid-side power supply and a second power supply parameter of the energy storage device, and adjust the power supply that provides the initial electric energy to the pulse generating unit based on the first power supply parameter and the second power supply parameter.

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

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

[0033] The switch tube 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] According to a second aspect of an embodiment of the present application, there is provided an energy storage device, which includes at least one first energy storage unit and a pulse generating unit in the battery heating control system described in the first aspect.

[0035] According to a third aspect of the embodiments of the present application, an electrical device is provided, which includes the second energy storage unit, the pulse generating unit and the first control unit in the battery heating control system described in the first aspect.

[0036] A fourth aspect of the embodiments of the present application provides a battery heating control method, which is applied to any battery heating control system provided in the first aspect above, and the method includes:

[0037] The energy storage device receives and analyzes the heating instruction, and determines a preset heating threshold indicated by the heating instruction;

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

[0039] 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 generates heat based on the internal resistance of the energy storage unit to be heated under the action of the first pulse current.

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

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

[0042] If so, obtain the first power supply parameter of the grid-side power supply and the second power supply parameter of the energy storage device, and control the grid-side power supply or each of the first energy storage units to provide the power supply of the initial electric energy to the pulse generating unit based on the first power supply parameter and the second power supply parameter, so that the pulse generating unit generates the first pulse current.

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

[0044] Controlling the pulse generating unit to generate a third pulse current, and outputting the third pulse current to a second energy storage unit in the electrical device;

[0045] Determining whether the first temperature satisfies a first preset temperature range;

[0046] If so, the first energy storage unit is connected to the pulse generating unit, and a first preset heating strategy is determined according to the first temperature, where the first preset heating strategy is used to indicate a heating speed, heating power and / or heating current value when heating the first energy storage unit;

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

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

[0049] Connecting the first energy storage unit to the pulse generating unit;

[0050] In the case where it is determined that the first temperature satisfies a first preset temperature range, determining a second preset heating strategy according to the first temperature;

[0051] adjusting a second output parameter of the pulse generating unit based on the second preset heating strategy, and outputting a pulse current generated by the pulse generating unit based on the second output parameter to the first energy storage unit, so that the first energy storage unit generates heat;

[0052] When it is determined that the second temperature of the second energy storage unit in the electrical device satisfies the second preset temperature range, determining a third preset heating strategy according to the second temperature;

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

[0054] In one embodiment, when the system further includes an electric device, the method further includes:

[0055] In response to the heating instruction, determining a first energy storage unit that needs to be connected to the electrical device;

[0056] Obtaining the operating parameters of the first energy storage unit to be heated, and controlling the heating component in the energy storage device 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] According to a fifth aspect of an embodiment of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the battery heating control method described in the fourth aspect is implemented.

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

[0060] The embodiment of the present application provides a battery heating control system, which is provided with an energy storage device, at least one pulse generating unit, and a first control unit in the battery heating control system. The energy storage device includes at least one first energy storage unit. In addition, the first end of the pulse generating unit is used to input initial electric 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.

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

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

[0063] Furthermore, the system does not need to install any additional heating components. Instead, the energy storage unit is pulse heated based on its own internal resistance by the first pulse current. This can reduce costs and space occupied by the system and / or the energy storage device.

[0064] In this way, the effects of increasing heating power, reducing energy consumption, and reducing costs and occupied space can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0066] Figure 1 A schematic diagram of the structure of a first battery heating control system provided in an embodiment of the present application;

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

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

[0069] Figure 4 A schematic diagram of the structure of a fifth battery heating control system provided in an embodiment of the present application;

[0070] Figure 5 A schematic diagram of the structure of a sixth battery heating control system provided in an embodiment of the present application;

[0071] Figure 6 A schematic diagram of the structure of a pulse generating unit provided in an embodiment of the present application;

[0072] Figure 7 A flowchart of a first battery heating control method provided in an embodiment of the present application;

[0073] Figure 8 A flow chart of a second battery heating control method provided in an embodiment of the present application;

[0074] Fig. 9 A flowchart of a third battery heating control method provided in an embodiment of the present application;

[0075] Fig.10 This is a flow chart of a fourth battery heating control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0077] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0078] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

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

[0080] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0081] In related technologies, the charging and discharging performance of batteries is greatly affected by temperature, especially in low temperature environments, where the internal resistance of the battery is large, which will lead to a decrease in charging and discharging efficiency and even increase the risk of lithium deposition. Therefore, related technicians will use natural heating of batteries, air blast heating, heating equipment in the battery pack, and circulating heating of liquid cooling systems to heat the batteries in energy storage power stations and new energy vehicles to ensure the charging and discharging efficiency of the batteries.

[0082] However, the solutions in the related art may have problems of insufficient heating power and high energy consumption, and require the installation of additional heating devices, which also leads to high costs and space occupation.

[0083] To this end, an embodiment of the present application provides a battery heating control system, by providing an energy storage device, at least one pulse generating unit, and a first control unit in the battery heating control system. The energy storage device includes at least one first energy storage unit. In addition, 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.

[0084] The pulse generating unit is used to generate a first pulse current under the control of the first control unit, and output the first pulse current to the first energy storage unit to be heated. The first energy storage unit to be heated is used to generate heat based on the internal resistance of the first energy storage unit to be heated under the action of the first pulse current. The effect of increasing heating power, reducing energy consumption, and reducing costs and occupied space can be achieved.

[0085] The embodiment of the present application is described by taking a battery heating control system applied to charging new energy vehicles as an example, but it does not mean that the embodiment of the present application can only be applied to the scenario of charging new energy vehicles, and the embodiment of the present application does not limit this.

[0086] The battery heating control system provided in the embodiment of the present application is explained in detail below.

[0087] Figure 1 This is a schematic diagram of the structure of a battery heating control system provided by this application. Figure 1 The embodiment of the present application provides a battery heating control system 100, the system 100 includes: an energy storage device 101, at least one pulse generating 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 electric 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 generating unit 102 is used to generate a first pulse current under the control of the first control unit 103 and 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 to be heated under the action of the first pulse current.

[0091] Optionally, the initial electric energy may refer to electric energy that can enable the pulse generating unit 102 to enter a working state and generate a first pulse current. Moreover, the initial electric energy may be provided in any possible manner, for example, the initial electric energy may be provided by other first energy storage units 1011 in each first energy storage unit 1011 except the first energy storage unit 1011 to be heated, or by other energy storage units in the system 100, or by a mains network or a power generation device connected to the energy storage device 101, which is not limited in the embodiments of the present application.

[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 a plurality of battery packs connected in series. Each battery pack may be a lithium battery or any other possible type of battery, which is not limited in the embodiment of the present application.

[0093] In addition, the first energy storage unit 1011 to be heated may refer to a first energy storage unit 1011 of the energy storage device 101 which 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 having processing, control, calculation, and communication functions. For example, the control unit may be used to detect any possible parameters such as the temperature, voltage, current, and remaining power of each battery pack in the energy storage device 101, which is not limited in this embodiment of the present application.

[0095] Optionally, the first control unit 103 may be any device having processing, control, calculation and other 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), and a vehicle control unit (VCU).

[0096] In addition, the first control unit 103 can be set at any possible location in the system 100. For example, the first control unit 103 can be set 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 embodiment of the present application is not limited to this.

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

[0098] Furthermore, the first control unit 103 can output a switching signal to the pulse generating unit 102 for controlling the on or off of the switch tube and other controllable switches, and can also be used to output a control signal to the pulse generating unit 102 for controlling the action of the pulse generator. The specific structure is determined by the actual structure of the pulse generating unit 102, and the embodiments of the present application are not limited to this.

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

[0100] Furthermore, the system 100 may include one pulse generating unit 102, or may include two or more pulse generating units 102. For example, if the energy storage unit 101 only needs to be connected to the corresponding power load, then only one pulse generating unit 102 may be provided, and if the power load has the function of providing the initial electric energy, then this pulse generating unit 102 may be specifically provided in the power load; if the energy storage unit 101 may be connected to the corresponding power load, and other power sources such as the mains network, then at least two pulse generating units 102 may be provided, and may be specifically provided in the power load and the energy storage unit 101, respectively. The embodiments of the present application do not limit this.

[0101] Optionally, the first pulse current may be a sinusoidal wave current, or a rectangular wave current or a triangular wave current having positive and negative bands, which is not limited in the embodiments of the present application.

[0102] It is worth noting that when the first energy storage unit 1011 needs to be heated, the pulse generating unit 102 can directly output the first pulse current to the first energy storage unit 1031 , or can also output the first pulse current to the energy storage device 101 through any other possible elements.

[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 positive and negative bands, the internal resistance of the first energy storage unit 1011 and the first pulse current response will generate a magnetic field inside the first energy storage unit 1011, and then eddy currents will be generated. The eddy currents will cause heat to be generated 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 embodiment of the present application, the working principle of the system 100 is briefly described below:

[0105] In the initial state where each first energy storage unit 1011 in the energy storage device 101 does not need to be charged or discharged, or the first energy storage unit 1011 and / or the energy storage device 101 do not need to be heated, the first control unit 103 will not output a signal to the pulse generating unit 102, and the pulse generating unit 102 will not output the first pulse signal to the first energy storage unit 1011. That is, in this case, pulse heating will not be performed on the first energy storage unit 1011.

[0106] In the case where the first energy storage unit 1011 and / or the energy storage device 101 needs to be heated, at this time, the first control unit 103 can output a corresponding control signal to the pulse generating unit 102, so that the initial electric energy is input to the pulse generating unit 102, and the pulse generating unit 102 is enabled to generate the first pulse current. If a 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 generate heat based on the internal resistance of the first energy storage unit 1011 under the action of the first pulse current.

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

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

[0110] Furthermore, the system 100 does not need to install any other additional heating components. Instead, the energy storage unit is pulse heated based on its own internal resistance by the first pulse current. This can reduce costs and space occupied by the system 100 and / or the energy storage device 101.

[0111] In the embodiment of the present application, an energy storage device 101, at least one pulse generating unit 102, and a first control unit 103 are provided in a battery heating control system 100. The energy storage device 101 includes at least one first energy storage unit 1011. In addition, the first end of the pulse generating unit 102 is used to input initial electric 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.

[0112] The pulse generating unit 102 is used to generate a first pulse current under the control of the first control unit 103, and 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 energy storage unit 1011 to be heated under the action of the first pulse current.

[0113] It can be understood that since pulse heating results in less energy loss in the heat transfer process and can make the heat generated inside the first energy storage unit 1011 more evenly distributed, the battery heating control system 100 provided in the embodiment of the present application 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 need to install any other additional heating components. Instead, the energy storage unit is pulse heated based on its own internal resistance by the first pulse current. This can reduce costs and space occupied by the system 100 and / or the energy storage device 101.

[0115] In this way, the effects of increasing heating power, reducing energy consumption, and reducing costs and occupied space can be achieved.

[0116] For a possible implementation, see Figure 2 , the system 100 further includes a current conversion unit 104 .

[0117] A first end of the current conversion unit 104 is connected to a second end of the pulse generation unit 102 , and a second end of the current conversion unit 104 is connected to a 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 generating unit 102 is disposed in other devices connected to the energy storage device 101, the current conversion unit 104 may be disposed in the charging device. If the pulse generating unit 102 is disposed inside the energy storage device 101, the current conversion unit 104 may be disposed in the energy storage device 101. The present application embodiment does not limit this.

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

[0121] In this embodiment, in addition to being used to output the first pulse current generated by the pulse generating 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, which is not limited in the embodiment of the present application.

[0123] Exemplarily, the current conversion module 1021 can convert the first pulse current based on the parameters of each battery pack in the energy storage device 101. For example, the first pulse current can be converted according to the rated voltage, rated current, current temperature, state of charge (remaining power) and other parameters of the battery pack in the energy storage unit 101 currently connected to the power device 103.

[0124] Furthermore, one power supply terminal of the charging device may be connected to the corresponding output terminal of the energy storage device 101, and one power supply terminal of the charging device may be connected to the mains network or any other possible power source. That is to say, when the charging device is connected to other power loads in the system 100 and other power loads are charged by the charging device, the charging device may charge other power loads with the power provided by the mains network, or may charge other power loads with the power provided by the energy storage device 101, and this embodiment of the application 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 the energy storage device 101 and / or each battery group in 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 inconsistent pulse current parameters can be avoided.

[0126] For a possible implementation, see Figure 3 The system 100 also includes an electrical device X, the pulse generating unit 102 and the first control unit 103 can be arranged in the electrical device X, and the electrical device X also includes a second energy storage unit 105.

[0127] The third end of the pulse generating unit 102 is connected to the second energy storage unit 105 , and the pulse generating unit 102 is further configured 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 electric energy is provided by the first energy storage unit 1011 or the second energy storage unit 105 .

[0130] Optionally, the electric device X may be any possible electric device, such as a new energy vehicle, a drone, an unmanned ship, or any other possible device. Generally, since the electric device X needs to generate a pulse current, the electric device X may include an inductor, a motor with an inductor, and / or a battery, etc., which is not limited in the embodiments of the present application.

[0131] Exemplarily, the second energy storage unit 105 may be a battery with a relatively large voltage and a relatively large capacity in the electric device X. For example, if the electric device X is a new energy vehicle, the second energy storage unit 105 may be a power battery in the new energy vehicle.

[0132] In this embodiment, since the pulse generating unit 102 is arranged in the electrical device X, in order to further reduce the cost of the electrical device X and the space occupied by the pulse generating unit 102, the switch tube and the inductor in the electrical device X can be used to form a circuit that can generate a pulse current, 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 electric energy is provided by the second energy storage unit 105 , the second energy storage unit 105 can be regarded as the power supply side and the first energy storage unit 1011 can be regarded as the power receiving side. At this time, the second energy storage unit 105 can be regarded as providing electric energy for pulse heating of the first energy storage unit 1011 .

[0134] It is worth noting that, in the initial state where the electric device X is not connected to the energy storage device 101 through the current conversion unit 104, or the electric device X or the energy storage device 101 does not need to be charged, or the second energy storage unit 105 and / or the energy storage device 101 does not need to be heated, at this time, the first control unit 103 will not output a signal to the pulse generating unit 102, and the pulse generating 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 the electric device X is connected to the energy storage device 101 through the current conversion unit 104 and needs to heat the first energy storage unit 1011 and / or the second energy storage unit 105, the electric device X and the energy storage device 101 are also connected through the charging device 102. At this time, the first control unit 103 can output a corresponding control signal to the pulse generating unit 102 to enable the pulse generating unit 102 to 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 1031 through the 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 the electric device X, which can also reduce the cost and the space occupied inside the electric device X.

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

[0138] A first end of the communication module 106 is connected to the second energy storage unit 105 , and a 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 power-consuming device X to communicate by handshake.

[0140] Optionally, the communication module 106 may be a communication device that supports any possible communication protocol, such as supporting a controller area network (CAN), which is not limited in the embodiments of the present application.

[0141] In addition, the communication module 106 may be provided in the energy storage device 101, or in the power-consuming device X, or in the above-mentioned charging device, which is not limited in the embodiment of the present application.

[0142] Optionally, the communication module 106 can also be used to enable the energy storage device 101 to send any possible parameters such as the temperature, voltage, current, and remaining power of each battery pack in the energy storage device 101 to the power device X when the handshake between the energy storage device 101 and the power device X is successful. Alternatively, the power device X sends a switching control signal for switching the battery pack connected to the power device X to the energy storage device 101. Alternatively, other communications between the energy storage device 101 and the power device X can also be implemented, which is not limited in the embodiments of the present application.

[0143] In this way, information exchange between the energy storage device 101 and the electrical device X can be achieved, which is beneficial to improving the accuracy of heating control.

[0144] For a possible implementation, see Figure 3 The energy storage device 101 includes a plurality of first energy storage units 1011 and a power switching unit 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 end and the third end of the power switching unit 1012 are connected to the first end and the second end of each first energy storage unit 1011 , respectively.

[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 switch on or off the path between each second energy storage unit 105 and the electrical device X.

[0148] Specifically, the power switching unit 1011 is specifically used to turn on or off the connection line between each first energy storage unit 1011 and the electrical device X when receiving a corresponding control signal (such as the above-mentioned switching control signal), 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 1011 may include any possible switching chip or switching circuit, which is not limited in the embodiment of the present application.

[0150] Exemplarily, the first energy storage unit 1011 may include a plurality of battery packs, and the battery packs may be connected in parallel or in series.

[0151] Generally, there may be only one first energy storage unit 1011 in the energy storage device 101 connected to the power device X to supply power to the power device X. There may also be two or more first energy storage units 1011 in the energy storage device 101 connected to the power device 103, which is not limited in this embodiment of the present application.

[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 device 101 when the path between the first energy storage unit 1011 and the electrical device X is connected.

[0154] Optionally, the second pulse current may also be a sinusoidal wave current, a rectangular wave current with positive and negative bands, or a triangular wave current, which is not limited in the embodiments of the present application.

[0155] It should be understood that since the parameters of the first pulse current directly output by the pulse generating unit 102 may be different from the parameters of the battery pack in the energy storage device 101, or the temperature and other parameters of the first energy storage unit 1011 and the second energy storage unit 105 are different, the first energy storage unit 1011 and the second energy storage unit 105 may also require different heating speeds or heating powers. When the current conversion unit 104 converts the first pulse current into the second pulse current, the first pulse current is output to the second energy storage unit 105, and the second pulse current is output to the first energy storage unit 1011, so that pulse heating of the second energy storage unit 105 and the energy storage device 101 under different working conditions can be achieved.

[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, in this case, it can also be ensured that the energy storage device 101 will not be damaged or unable to heat normally due to the mismatch of the parameters of the first pulse current.

[0157] In this way, the flexibility, safety and practicality of the battery heating control system 100 can be improved.

[0158] It is worth noting that Figure 1-Figure 3The system 100 provided is only an example, and does not mean that the battery heating control system 100 provided in the embodiment of the present application 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 the embodiment of the present application does not limit this.

[0159] It is worth noting that after the power switching unit 1012 operates, the path between at least one first energy storage unit 1011 and the electrical device X can be opened, 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 first pulse current or the 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 approach, see Figure 3 The energy storage device 101 may also include multiple capacitors C.

[0161] The capacitor C is connected between the second end of the power switching unit 1012 and the first end of the first energy storage unit 1011, and / or each capacitor C is connected between the first ends of any two adjacent first energy storage units 1011. For specific connection relationships, see Figure 3 As shown, the embodiments of the present application are not 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 balancing each first energy storage unit 1011 at high frequency, thereby improving the stability of the system 100 .

[0163] For a possible implementation, see Figure 4 The system 100 also includes a grid-side power supply Y and a power conversion unit Z.

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

[0165] Among them, the power conversion unit Z is used to convert the first alternating current input by the grid-side power supply Y into a first direct current and a second alternating current, and output the first direct current and the second alternating current to each first energy storage unit 1011, and is used to convert the second direct current output by each first energy storage unit 1011 into a third alternating current, and output the third alternating current to the grid-side power supply Y.

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

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

[0168] The first direct current can be used to charge each first energy storage unit 1011. The second alternating current can be used to provide initial power for the pulse generating unit 102. Parameters such as the voltage level of the first direct current and the second alternating current can be set according to actual needs, and the embodiment of the present application does not limit this.

[0169] Optionally, the second direct current may refer to electric energy used by the energy storage device 101 to compensate the grid-side power supply Y. The third alternating current may be electric energy used to convert the second direct current so as to be connected to the grid-side power supply Y. Generally, the parameters of the third alternating current may be the same as the parameters of the first alternating current, which is not limited in the embodiment of the present application.

[0170] It can be seen that by converting and transmitting electric energy between the grid-side power supply Y and the energy storage device 101 through the power conversion unit Z, the grid-side power supply Y can be regulated by the energy storage device 101 in the "peak shaving and valley filling" mode, and the grid-side power supply Y can also directly provide the energy storage device 101 with electric energy for pulse heating.

[0171] For example, in Figure 4 Based on Figure 5 The power conversion unit Z may specifically include an AC-DC module for converting the first alternating current into direct current and outputting the direct current to a subsequent circuit, a DC-DC module 1 and a DC-DC module 2 for converting the direct current output by the AC-DC module into a first direct current of another voltage level and outputting the first direct current to the corresponding first energy storage unit 1011, and a DC-AC module 1 and a DC-AC module 2 for converting the direct current output by the AC-DC module into a second alternating current and outputting the second alternating current to the corresponding pulse generating unit 102.

[0172] In addition, the DC-DC module 1 and the DC-DC module 2 can also be used to convert the DC power output by each first energy storage unit 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] Understandably, Figure 5The power conversion unit Z shown is only an example, and does not mean that the power conversion unit Z provided in the embodiment of the present application can only be Figure 5 The structure shown is not limited to this embodiment of the present application.

[0174] In a possible implementation, see Figure 4 The system 100 also includes a second control unit 107.

[0175] The second control unit 107 is also used to obtain a first power supply parameter of the grid-side power supply Y and a second power supply parameter of the energy storage device 101, and adjust the power supply that provides the initial power to the pulse generating unit 102 based on the first power supply parameter and the second power supply parameter.

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

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

[0178] In addition, the second control unit 107 can be set inside the energy storage device 101 or outside the energy storage device 101, and can specifically include a battery information acquisition unit for obtaining real-time temperature T, voltage U, current I and other information of the battery pack, a battery management unit BMU, and a WI-FI unit and a Bluetooth unit for wireless communication with external devices. This embodiment of the application is not limited to this.

[0179] Exemplarily, adjusting the power supply that provides the initial electric energy to the pulse generating unit 102 based on the first power supply parameter and the second power supply parameter may specifically refer to: obtaining the current grid electricity price of the grid-side power supply Y and the average energy storage price of the energy storage device 101, and then determining a power supply with a lower electricity price to provide the initial electric energy to the pulse generating unit 103.

[0180] The current grid electricity price may refer to the current city electricity price. The average energy storage electricity price may refer to the average electricity price of the remaining electricity stored in the energy storage device 101. The average value may be calculated in any possible way according to the electricity price in each period of charging, and the present application embodiment does not limit this.

[0181] For another example, adjusting the power supply that provides the initial electric energy to the pulse generating unit 102 based on the first power supply parameter and the second power supply parameter may also refer to: continuously acquiring the first power supply parameter and the second power supply parameter within a certain period of time to respectively determine the power supply stability parameters of the grid-side power supply Y and the power supply stability of the energy storage device 101 within this period of time, so that the power supply with higher power supply stability provides the initial electric energy to the pulse generating unit 103.

[0182] In this way, a more suitable power source can be selected to provide the initial electric energy according to the actual working 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 a possible implementation, the pulse generating unit 102 may include at least a plurality of inductors and a plurality of switching tubes.

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

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

[0186] In this embodiment, the number of the inductor and the switch tube can be set according to actual needs, and this embodiment of the present application does not limit this.

[0187] For example, if the pulse generating unit 102 is disposed in the electric device X, and the electric device X is a vehicle having a motor, then the inductance may be the inductance of the motor in the electric device X. In addition, the electric device X may include one motor or two motors, or may include a greater number of motors, which is not limited in the embodiments of the present application.

[0188] The motor refers to a device that converts electrical energy into mechanical energy. When converting electrical energy into mechanical energy, the motor exhibits the working characteristics of a motor; when converting mechanical energy into electrical energy, the motor exhibits the working characteristics of a generator.

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

[0190] In one possible approach, Figure 6 A possible schematic diagram of the structure of the pulse generating unit 102 is shown in FIG. Figure 6 , Figure 6The provided pulse generating unit 102 may be arranged in the electrical equipment X, and the pulse generating unit 1032 includes an inductor L1, an inductor L2, an inductor L3, a switch tube M1, a switch tube M2, a switch tube M3, a switch tube M4, a switch tube M5, and a switch tube M6.

[0191] In this embodiment, each switch tube can be an N-channel switch tube, and generally, the parameters of each switch tube can be the same, which is not limited in the embodiment of the present application.

[0192] In this embodiment, Figure 6 Also shown are controllable switches K1, K2, K3, and a first battery pack B1 and a second battery pack B2. Figure 6 The specific connection relationship between the various elements shown in Figure 6 As shown, the embodiments of the present application are not described in detail here.

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

[0194] Optionally, the first battery group B1 may be any battery group in the first energy storage unit 1011 or any battery group in the second energy storage unit 105. The second battery group B2 may be any battery group in the first energy storage unit 1011 or any battery group 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, and the first battery pack B1 generally may have only one battery pack, while the second battery pack B2 may have one or more battery packs. This embodiment of the application does not limit this.

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

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

[0198] When the first battery group B1 and the second battery group B2 are connected between the controllable switches K1, K2 and K3, and the first battery group B1 or the second battery group B2 is discharged to the outside at this time, if the first battery group B1 is discharged to the outside, the first control unit 103 first controls the controllable switches K1 and K3 to be turned on, and controls the switch tubes M1, M2 and M3 to be turned on. At this time, the current output by the first battery group B1 flows through the controllable switches K1, M1, M2 and M3 into the inductor L1, L2 and L3 respectively, and flows to the first battery group B1 and the second battery group B2 through the controllable switch K3.

[0199] Then, the first control unit 103 controls the controllable switch K1 and the controllable switch K3, the switch tube M1, the switch tube M2, and the switch tube M3 to turn off, and then controls the controllable switch K2 and the controllable switch K3 to turn on, and controls the switch tube M4, the switch tube M5, and the switch tube M6 to turn on. At this time, the electric energy stored in the inductor L1, the inductor L2, and the inductor L3 forms a path with the second battery pack B2 through the controllable switch K1, the controllable switch K3, the switch tube M1, the switch tube M2, and the switch tube M3. In this way, a pulse current can be output to the second battery pack B2.

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

[0201] It is worth noting that, in the process of outputting the pulse current, the first battery group B1 outputs electrical energy, while the second battery group B2 receives electrical energy, that is, in the above example, pulse heating is performed on the second battery group B2.

[0202] In another possible implementation, the pulse generating unit 102 may also include the above-mentioned controllable switch K1, controllable switch K2, and controllable switch K3. Alternatively, the controllable switch K1, controllable switch K2, and controllable switch K3 may be respectively arranged on the connection line between the pulse generating unit 102 and the corresponding battery pack. This embodiment of the application is not limited to this.

[0203] It is worth noting that the first battery pack B1 and the second battery pack B2 provided in the embodiment of the present application can be the battery pack in the first energy storage unit 1011 or the battery pack in the second energy storage unit 105, respectively. That is to say, in the system 100 provided in the embodiment of the present application, by changing the battery pack connected to the pulse generating unit 102 through the corresponding switch, the battery pack or energy storage unit for pulse heating can be changed, and the battery pack or energy storage unit for providing energy for pulse heating can also be changed.

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

[0205] That is to say, in this way, the energy distribution between the power consumption device X and the energy storage device 101 can be adjusted, thereby avoiding the problem that the power consumption device 103 or the energy storage device 101 may be over-discharged due to discharge only through the power consumption device X or the energy storage device 101.

[0206] In another possible embodiment, the pulse generating unit 102 disposed in the energy storage device 101 may also be connected to the above Figure 6 The structure shown is the same, but in this case, the inductors in the pulse generating unit 102 cannot reuse the motor inductors in the electrical device X, but need to reselect and set the inductors with appropriate parameters according to the circuit structure, which is not limited in the embodiments of the present application.

[0207] In another possible embodiment, if a pulse generating unit 102 is provided in the energy storage device 101, and the grid-side power source Y provides the initial electric energy to the pulse generating unit 102, then Figure 6 The first battery pack B1 shown in the figure is replaced by a power conversion unit Z corresponding to the grid-side power supply Y and used to output the above-mentioned second alternating current.

[0208] In this way, the purpose of providing the energy storage device 101 with the first pulse current for pulse heating can be achieved by the grid-side power source Y, which can improve the practicality of the system 100. At the same time, 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 can also be avoided.

[0209] In addition, an embodiment of the present application further provides an energy storage device, which may include at least one first energy storage unit and a pulse generating 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 further include a power switching unit and any other possible devices, which is not limited in the embodiments of the present application.

[0211] Exemplarily, the pulse generating unit included in the energy storage device may refer to a pulse generating unit 102 provided in any of the above-mentioned embodiments and installed in the energy storage device 101, for generating a first pulse current based on the electric energy output by the first energy storage unit in the energy storage device 101, the electric energy output by the second energy storage unit in the above-mentioned electrical device, and the electric energy output by the grid-side power supply.

[0212] For the convenience of distinction, the pulse generating unit included in the energy storage device can be used as the first pulse generating unit. Specifically, the input end of the first pulse generating unit is connected to the above-mentioned grid-side power supply, and the output end of the first pulse generating unit is connected to the input end of each first energy storage unit.

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

[0214] Optionally, the electric device may be the electric device X provided in any of the above embodiments, such as a vehicle including a motor, etc. Specifically, any other possible device may also be included, which is not limited in the embodiments of the present application.

[0215] Exemplarily, 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 electric energy output by the first energy storage unit in the energy storage device 101 and the electric energy output by the second energy storage unit in the above electrical device.

[0216] For the convenience of distinction, the pulse generating unit included in the electrical device can be used 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 can be understood that the electrical equipment and the energy storage equipment provided above belong to the same design concept as any battery heating control system 100 provided in the aforementioned embodiments, and their working principles and technical effects are the same. For details, please refer to the above description, and the embodiments of this application will not be repeated here.

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

[0219] Figure 7 is a flow chart of a battery heating control method provided in an embodiment of the present application. The battery heating control method can be specifically executed by any possible control unit in the above-mentioned battery heating control system 100, and the embodiment of the present application does not limit this. Figure 7 , the method comprising:

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

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

[0222] Optionally, the heating instruction may be an instruction generated by a relevant technician or a user by triggering a corresponding touch device or terminal device.

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

[0224] In addition, in addition to indicating the preset heating threshold, the heating instruction can be used to indicate one or more first energy storage units selected by the user to charge the electrical device, and can also be used to indicate the charging time expected by the user, and can also be used to indicate any possible information such as the charging mode and charging power selected by the user. This embodiment of the application is not limited to this.

[0225] The preset heating threshold may refer to a temperature value to which a user expects the first energy storage units in the energy storage device to be heated, or may refer to a temperature value that enables each first energy storage unit to be charged and discharged normally.

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

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

[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 temperature acquisition instruction can be sent to the energy storage device through the above-mentioned communication module, and the temperature data sent by the energy storage device can be received and parsed to obtain the first temperature. The electric device can also obtain the first temperature from the above-mentioned charging device. This embodiment of the application is not limited to this.

[0230] Specifically, controlling the pulse generating unit to generate the first pulse current may specifically 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 the heating speed 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 the first energy storage unit needs to be heated, and the parameters of the pulse heating can be accurately controlled by changing the waveform of the generated first pulse current. In this way, the practicality of the battery heating control method provided in the embodiment of the present application can be improved.

[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 generates heat based on the internal resistance of the energy storage unit to be heated 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 through the power conversion unit. In addition, the power conversion unit can convert the first pulse current into the second pulse current in the manner provided in the above embodiment, which is not limited in the present embodiment.

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

[0235] Furthermore, there is no need to install other heating components, which can also reduce costs and reduce the space occupied inside the electrical equipment.

[0236] In this way, the effects of increasing heating power, reducing energy consumption, and reducing costs and occupied space can be achieved.

[0237] In a possible implementation, when the system further includes a grid-side power supply, the first control unit controls the pulse generating unit to generate the 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:

[0238] It is determined 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, obtain the first power supply parameter of the grid-side power supply and the second power supply parameter of the energy storage device, and control the grid-side power supply or each first energy storage unit to provide the power supply of the initial electric energy to the pulse generating unit based on the first power supply parameter and the second power supply parameter, so that the pulse generating 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 supply, load pressure, current grid electricity price, etc.

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

[0243] Exemplarily, the current grid electricity price of the grid-side power supply and the average energy storage price of the energy storage device can be obtained, and then the power supply with lower electricity price can be determined to provide the initial electric energy to the pulse generating unit.

[0244] Alternatively, the first power supply parameter and the second power supply parameter are continuously obtained within a certain period of time to respectively determine the power supply stability parameters of the grid-side power supply and the power supply stability of the energy storage device within this period of time, so that the power supply with higher power supply stability provides the initial power to the pulse generating unit.

[0245] In this way, the corresponding pulse heating method can be selected while considering 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 include only one motor, while some electrical devices may include two or more motors. Therefore, the present application embodiment also provides a possible implementation method, see 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 the 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 generating unit to generate a third pulse current, and output the third pulse current to the second energy storage unit in the electrical device.

[0248] Optionally, the third pulse current may be a pulse current for self-heating 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 may be determined according to parameters such as the temperature, current, voltage, and remaining power of the second energy storage unit.

[0250] Step 2005: Determine whether the first temperature satisfies a 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°C, 30°C], or [-30°C, 0°C], or any other possible temperature range, which is not limited in the embodiments of the present application.

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

[0253] Step 2006: If yes, connect the first energy storage unit to the pulse generating unit, and determine a first preset heating strategy according to the first temperature.

[0254] Optionally, the first energy storage unit is connected to the pulse generating unit, which specifically refers to connecting the battery pack to be heated in the first energy storage unit to the above Figure 4 In the corresponding positions shown, the embodiments of the present application do not limit this.

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

[0256] Generally, if the first temperature is lower, the heating speed, heating power and / or heating current value indicated by the first preset heating strategy will be greater.

[0257] In addition, different first preset heating strategies may be set according to the actual working conditions of the battery. For example, if the first temperature is -20°C, the heating current indicated by the first preset heating strategy may be 200A, and the heating rate may be 1°C per minute. If the first temperature is -15°C, the heating current indicated by the first preset heating strategy may be 250A, and the heating rate may be 1.5°C per minute. The embodiments of the present application are not limited to this.

[0258] It is worth noting that in the method provided in the embodiment of the present application, the first temperature can be updated in real time or updated once at a certain interval, and after the first temperature is updated, the first preset heating strategy can be re-determined based on the updated first temperature. The embodiment of the present application does not limit this.

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

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

[0261] It is noteworthy that, in this way, the automation of battery heating control can be improved, and the heating parameters can be adaptively selected to flexibly heat the second energy storage unit.

[0262] For a possible implementation, see Fig. 9 , if the electrical device includes at least two motors, the electrical device generates a first pulse current through a pulse generating unit in the electrical device 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 generating unit.

[0264] Step 2009: When it is determined that the first temperature satisfies the first preset temperature range, a second preset heating strategy is determined according to the first temperature.

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

[0266] The second preset heating strategy may be the same as the first preset heating strategy, or may be different from the first preset heating strategy, which is not limited in the embodiment of the present application.

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

[0268] Optionally, the second output parameter may be the same as the first output parameter, or may be different from the first output parameter, which is not limited in the embodiment of the present application.

[0269] Step 2011: when it is determined that the second temperature of the second energy storage unit in the electrical device satisfies the second preset temperature range, a third preset heating strategy is determined according to 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 interval can be set by relevant technical personnel according to actual needs. For example, the second preset temperature interval can be [-50°C, 30°C], or [-30°C, 0°C], or any other possible temperature interval, which is not limited in the embodiments of the present application.

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

[0273] Step 2012: adjusting the third output parameter of the pulse generating unit based on the third preset heating strategy, and outputting the pulse current generated by the pulse generating unit based on the third output parameter to the second energy storage unit, so that the second energy storage unit generates heat.

[0274] Optionally, adjusting the third output parameter of the pulse generating unit may specifically refer to adjusting the output waveform, output amplitude, output frequency, etc. of the pulse generating 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 inductances of different motors can be reused to generate different pulse currents. For example, in the case of two motors, the pulse generating unit provided in this embodiment and arranged in the electrical device may include two Figure 4 The circuits shown in the figure are respectively connected between the controllable switch K2 and the controllable switch K3 in the two circuits, and the switch tubes in the two circuits can be controlled to output different pulse currents.

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

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

[0278] The electrical device continuously obtains 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 device determines that the real-time temperature satisfies a third preset temperature range, the pulse generating unit is controlled to stop outputting the first pulse current to the first energy storage unit.

[0281] Optionally, the third preset temperature interval can be set by relevant technicians according to actual needs. For example, the third preset temperature interval can be [30°C, +∞], or [0°C, +∞], or any other possible temperature interval. Generally, the minimum value of the third preset temperature interval is greater than or equal to the maximum value of the first preset temperature interval, which is not limited in the embodiment of the present application.

[0282] Generally, when the real-time temperature satisfies the third preset temperature range, it indicates that the temperature of the first energy storage unit is relatively high and can be charged and discharged normally, and there is currently no need to heat the first energy storage unit.

[0283] Optionally, when it is determined that the real-time temperature satisfies the third preset temperature range, the electrical device may also output a reminder signal in any possible manner to remind the user that the pulse heating has been stopped.

[0284] In this way, pulse heating can be stopped when the temperature of the first energy storage unit is high, which can avoid the problem that continuous heating of the first energy storage unit may cause damage to the first energy storage unit. In addition, a reminder signal can be output in time to remind the user, which can provide effective heating reminder assistance.

[0285] For a possible implementation, see Fig.10 , the method further comprises:

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

[0287] Optionally, in this case, if the heating instruction indicates the first energy storage unit that the user expects to use, then the first energy storage unit that needs to be connected to the electrical device is the first energy storage unit indicated by the heating instruction. If the heating instruction does not indicate the first energy storage unit that the user expects to use, then the first energy storage unit that needs to be connected to the electrical device can be any first energy storage unit in the energy storage device that can work normally. This embodiment of the application is not limited to this.

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

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

[0290] Optionally, the heating component may refer to any possible component such as a heating film, a heating resistor, a heating wire, a hot air blower, etc., which is arranged in the energy storage device. Generally, the heating component may be located near the first energy storage unit to avoid excessive heat loss during heat transfer. In addition, the first energy storage unit may be used to power the heating component. This embodiment of the present application is not limited to this.

[0291] Generally, the heating component in the energy storage device can be controlled to generate heat when the temperature of the first energy storage unit is low, the remaining power is high, and the voltage and / or current are within a normal range. Specifically, the heating power and other parameters of the heating component can be adjusted according to the working parameters. For example, if the temperature is lower, the heating power of the heating component can be greater. This embodiment of the application is not limited to this.

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

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

[0294] Generally, if the connection between the electric 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 electric device to the charging device, or a connection failure occurs between the electric device and the charging device.

[0295] In addition, step 2013 to step 2015 may be executed before step 2002, or may be executed in any other possible order, which is not limited in the embodiment of the present application.

[0296] It is worth noting that if the power-consuming device is not detected to be connected to the charging device within a preset time, the energy storage device and / or the charging device can be put into a sleep state to save energy consumption, which is not limited in the embodiments of the present application.

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

[0298] The embodiment of the present application also provides a possible battery heating control device, which includes:

[0299] A connection confirmation module, used to receive and parse a heating instruction through the energy storage device, and determine a preset heating threshold indicated by the heating instruction;

[0300] A pulse generating module, configured to control the pulse generating unit to generate a first pulse current based on the preset heating threshold and a first temperature of the first energy storage unit in the energy storage device through the first control unit;

[0301] The heating module is used to output the first pulse current to the energy storage unit to be heated through the pulse generating unit, so that the energy storage unit to be heated generates heat based on the internal resistance of the energy storage unit to be heated under the action of the first pulse current.

[0302] The above-mentioned device is used to execute the method provided by the aforementioned embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0303] The above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more microprocessors, or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0304] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0305] Optionally, the present application also provides a program product, such as a computer-readable storage medium, including a program, which is used to execute any of the above-mentioned battery heating control method embodiments when executed by a processor.

[0306] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

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

[0308] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0309] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random Access Memory, abbreviated: RAM), disk or optical disk and other media that can store program codes.

[0310] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0311] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery heating control system, characterized in that: The system comprises: an energy storage device, at least one pulse generating unit, and a first control unit; the energy storage device comprises at least one first energy storage unit; The first end of the pulse generating unit is used to input initial electric 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 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 to be heated under the action of the first pulse current.

2. The battery heating control system according to claim 1, characterized in that: The system also includes a current conversion unit; The first end of the current conversion unit is connected to the second end of the pulse generating 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 according to claim 2, characterized in that: The system further includes an electric device, the pulse generating unit and the first control unit are arranged in the electric device, and the electric device further includes a second energy storage unit; The third end of the pulse generating unit is connected to the second energy storage unit, and the pulse generating unit is further 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 electric energy is provided by the first energy storage unit or the second energy storage unit.

4. The battery heating control system according to 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 handshake communication between the energy storage device and the power-consuming device.

5. The battery heating control system according to claim 4, characterized in that: The energy storage device comprises a plurality of the 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 end and the third end of the power switching unit are respectively connected to the first end and the second end of each of the first energy storage units; the power switching unit is used to open or close the path between each of the second 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; Among them, the current conversion unit 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; the first energy storage unit is used to generate heat based on the second pulse current and the internal resistance of the energy storage device when the path between the first energy storage unit and the electrical equipment is turned on.

6. The battery heating control system according to claim 1, characterized in that: The system also includes a grid-side power supply and a power conversion unit; The first transmission end of the power conversion unit is used to connect to the grid-side power supply, and each second transmission end of the power conversion unit is connected to each third transmission end of each first energy storage unit respectively; The power conversion unit is used to convert the first alternating current input from the grid-side power supply into a first direct current and a second alternating current, and output the first direct current and the second alternating current to each of the first energy storage units, and to convert the second direct current output from each of the first energy storage units into a third alternating current, and output the third alternating current to the grid-side power supply; The initial electric energy is provided by the second alternating current or the first energy storage unit.

7. The battery heating control system according to claim 6, characterized in that: The system further comprises a second control unit; The second control unit is also used to obtain a first power supply parameter of the grid-side power supply and a second power supply parameter of the energy storage device, and adjust the power supply that provides the initial electric energy to the pulse generating unit based on the first power supply parameter and the second power supply parameter.

8. The battery heating control system according to any one of claims 1 to 7, characterized in that: The pulse generating unit at least includes a plurality of inductors and a plurality of switch tubes; The inductor is used to convert the initial electric energy into the first pulse current; The switch tube 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.

9. An energy storage device, characterized in that: The energy storage device comprises at least one first energy storage unit and a pulse generating unit in the battery heating control system according to any one of claims 1 to 8.

10. An electrical device, characterized in that: The electrical device comprises the pulse generating unit and the first control unit in the battery heating control system according to any one of claims 1 to 8, and the second energy storage unit in the battery heating control system according to any one of claims 3 to 5.

11. A battery heating control method, characterized in that: The battery heating control system according to any one of claims 1 to 8 above, wherein the battery heating control system comprises an energy storage device, a pulse generating unit, and a first control unit, wherein the energy storage device comprises at least one energy storage unit; and the method comprises: The energy storage device receives and analyzes the heating instruction, and determines a preset heating threshold indicated by the heating instruction; The first control unit controls the pulse generating unit to generate a first pulse current based on the preset heating threshold and a first temperature of a first energy storage unit in the energy storage device; 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 generates heat based on the internal resistance of the energy storage unit to be heated under the action of the first pulse current.

12. The battery heating control method according to claim 11, characterized in that: In the case where the system further includes a grid-side power supply, the first control unit controls the pulse generating unit to generate a first pulse current based on the preset heating threshold and a first temperature of a first energy storage unit in the energy storage device, including: determining whether the first temperature is less than the preset heating threshold; If so, obtain the first power supply parameter of the grid-side power supply and the second power supply parameter of the energy storage device, and control the grid-side power supply or each of the first energy storage units to provide the power supply of the initial electric energy to the pulse generating unit based on the first power supply parameter and the second power supply parameter, so that the pulse generating unit generates the first pulse current.

13. The battery heating control method according to claim 11, characterized in that: In the case where the system further includes an electrical device, and the electrical device includes a motor, the first control unit controls the pulse generating unit to generate a first pulse current based on the preset heating threshold and a first temperature of a first energy storage unit in the energy storage device, including: Controlling the pulse generating unit to generate a third pulse current, and outputting the third pulse current to a second energy storage unit in the electrical device; Determining whether the first temperature satisfies a first preset temperature range; If so, the first energy storage unit is connected to the pulse generating unit, and a first preset heating strategy is determined according to the first temperature, where the first preset heating strategy is used to indicate a heating speed, heating power and / or heating current value when heating the first energy storage unit; The first output parameter of the pulse generating unit is adjusted based on the first preset heating strategy, and the current output by the pulse generating unit is used as the first pulse current.

14. The battery heating control method according to claim 11, characterized in that: If the electrical device includes at least two motors; the electrical device generates a first pulse current through a pulse generating unit in the electrical device based on the first temperature of the first energy storage unit, specifically including: Connecting the first energy storage unit to the pulse generating unit; In the case where it is determined that the first temperature satisfies a first preset temperature range, determining a second preset heating strategy according to the first temperature; adjusting a second output parameter of the pulse generating unit based on the second preset heating strategy, and outputting a pulse current generated by the pulse generating unit based on the second output parameter to the first energy storage unit, so that the first energy storage unit generates heat; When it is determined that the second temperature of the second energy storage unit in the electrical device satisfies the second preset temperature range, determining a third preset heating strategy according to the second temperature; The third output parameter of the pulse generating unit is adjusted based on the third preset heating strategy, and the pulse current generated by the pulse generating unit based on the third output parameter is output to the second energy storage unit, so that the second energy storage unit generates heat.

15. The battery heating control method according to claim 11, characterized in that: In the case where the system further includes an electric device, the method further includes: In response to the heating instruction, determining a first energy storage unit that needs to be connected to the electrical device; Obtaining the operating parameters of the first energy storage unit to be heated, and controlling the heating component in the energy storage device 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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