Adjusting circuit, adjusting system and adjusting method for battery

Abstract

The invention provides an adjusting circuit, an adjusting system and an adjusting method for a battery. The regulating circuit may include: a battery side for connection with the battery; the bus side is used for being connected with an external power supply; the power module is used for adjusting voltage and is connected between the battery side and the bus side; and a control switch group, the control switch group including: a first control switch connected between the bus side and the power module; a second control switch connected between the first control switch and the battery side; and a third control switch connected between the power module and the battery side. According to the embodiment, the requirements of the charging and discharging voltage and the working temperature of the battery in different scenes can be met, and the heating efficiency of the battery can be improved.

Description

Regulation circuit, regulation system and regulation method for battery Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a regulation circuit for a battery, a regulation system, a regulation method for a regulation circuit, a regulation device for a regulation circuit, an electronic device, a computer-readable storage medium, and a computer program product. Background Art

[0002] With the advancement of battery technology, it is becoming increasingly popular to power electrical devices with batteries.

[0003] In some situations, a battery's external characteristics are easily affected by ambient temperature. For example, in low-temperature environments, the battery's capacity will decrease, preventing it from being fully charged, which in turn reduces its service life and effective capacity. Therefore, in some environments, it is necessary to preheat the battery to reach normal operating temperature.

[0004] How to meet the needs of batteries in different scenarios is a technical problem that needs to be solved urgently in this field.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a battery regulation circuit, regulation system, regulation method for a regulation circuit, regulation device for a regulation circuit, electronic device, computer-readable storage medium, and computer program product, so as to facilitate regulating the battery voltage or heating the battery to meet various battery operation requirements.

[0007] An embodiment of the first aspect of the present application provides a regulation circuit for a battery, including: a battery side, for connecting to a battery; a bus side, for connecting to an external power supply; a power module, the power module is used to regulate voltage and is connected between the battery side and the bus side; and a control switch group, the control switch group including: a first control switch, the first control switch is connected between the bus side and the power module; a second control switch, the second control switch is connected between the first control switch and the battery side; and a third control switch, the third control switch is connected between the power module and the battery side.

[0008] In the technical solution of the embodiment of the present application, a first control switch is set between the external power supply and the power module, a second control switch is set between the first control switch and the battery, and a third control switch is set between the power module and the battery. Thus, by controlling the first control switch, the second control switch and the third control switch, different operating modes of the regulation circuit (for example, boost and buck mode and battery heating mode) can be switched to meet the battery requirements in different scenarios (for example, charge and discharge voltage and operating temperature).

[0009] Specifically, by connecting only the first and third control switches, the power module can regulate the charge and discharge voltages between the battery and the external power supply. By connecting only the second control switch, a current loop can be formed between the power module and the battery, allowing the battery to heat itself by charging and discharging within this current loop. This allows multiple batteries in the system to be connected to multiple regulation circuits, enabling independent heating control of multiple batteries. This allows multiple batteries in the system to be heated simultaneously to improve heating efficiency, avoiding the need to heat multiple batteries sequentially.

[0010] In some embodiments, the power module includes at least one bridge arm and at least one inductor element, wherein a first end of each of the at least one inductor element is connected to a corresponding one of the at least one bridge arm. The inductor element in the power module can function as an energy storage element in boost / buck modes to regulate the battery's charge and discharge voltages. Furthermore, in battery heating mode, the inductor element can utilize its hysteresis effect on current changes to more quickly redirect current in the current loop, thereby providing higher-frequency pulse heating of the battery.

[0011] In some embodiments, the first end of a first control switch is connected to the first end of the busbar, and the second end of the first control switch is connected to the first end of each bridge arm in at least one bridge arm. The first end of a second control switch is connected to the second end of the first control switch, and the second end of the second control switch is connected to the first end of the battery. The first end of a third control switch is connected to the second end of each inductor in at least one inductor, and the second end of the third control switch is connected to the second end of the second control switch. Furthermore, the second end of each bridge arm in at least one bridge arm is connected to the second end of the busbar and the second end of the battery. Thus, by controlling the first, second, and third control switches, the regulation circuit can switch between a boost / buck mode and a battery heating mode. Specifically, by connecting only the first and third control switches, the power module can regulate the charge and discharge voltages between the battery and the external power supply. By connecting only the second control switch, a current loop can be formed between the power module and the battery, enabling simultaneous heating of multiple batteries, thereby improving heating efficiency. Furthermore, the inductor can leverage its hysteresis effect on current changes to more quickly change the direction of the current in the current loop, thereby providing higher-frequency pulse heating of the battery.

[0012] In some embodiments, the power module further includes a busbar capacitor element and a battery capacitor element. The busbar capacitor element is connected in parallel with each of the at least one bridge arm, and the two ends of the battery capacitor element are connected to the second end of each inductor element and the second end of each bridge arm, respectively. By connecting the capacitor elements in parallel, the voltage of the regulation circuit can be stabilized, thereby improving the stability of the regulation circuit.

[0013] In some embodiments, each of at least one bridge arm includes a plurality of power semiconductor devices connected in series, a first end of each inductor element is connected between two of the plurality of power semiconductor devices in the corresponding bridge arm, and the power module further includes a flying capacitor element connected in parallel with the two power semiconductor devices. By providing capacitors in the bridge arms, the voltage of the regulation circuit can be stabilized, thereby further improving the stability of the regulation circuit.

[0014] In some embodiments, the control switch group further includes a pre-charge control device connected in parallel with at least one of the first, second, and third control switches. The pre-charge control device facilitates safe pre-charging of the busbar capacitor or battery capacitor upon power-up to prevent excessive current from being generated in the circuit when the regulator circuit is connected to an external power source or battery, thereby preventing damage to the circuit.

[0015] In some embodiments, the pre-charge control device includes a resistor element and a fourth control switch, thereby facilitating safe power-up pre-charging of the bus capacitor or the battery capacitor.

[0016] In some embodiments, the regulation circuit further includes: a first fuse connected between the first control switch and the busbar side; and / or a second fuse connected between each of the second and third control switches and the battery side. These fuses can be short-circuited by melting in a short period of time in the event of a short circuit on the battery side or the busbar side of the regulation circuit, thereby protecting the regulation circuit.

[0017] In some embodiments, the regulation circuit further includes: a first lightning protection device, the input side of which is connected to the busbar side; and / or a second lightning protection device, the input side of which is connected to the battery side. The lightning protection devices can protect the regulation circuit from lightning strikes, thereby providing protection for the circuit.

[0018] The second embodiment of the present application provides a regulation system, including a battery and the regulation circuit in the above embodiment. This embodiment can achieve the same technical effects as the above regulation circuit.

[0019] The third aspect of the present application provides a method for regulating the regulation circuit in the above-mentioned embodiment, comprising: obtaining an indication signal, the indication signal being used to indicate an operating mode of the regulation circuit, the operating modes including a boost / buck mode and a battery heating mode, wherein in the boost / buck mode, the power module can regulate the voltage between the battery and the external power supply, and in the battery heating mode, the battery can be heated and heated; and controlling the control switches in the control switch group according to the indication signal to cause the regulation circuit to switch the operating mode. Thus, by controlling the first control switch, the second control switch, and the third control switch, the regulation circuit can switch between the boost / buck mode and the battery heating mode. Specifically, by connecting only the first control switch and the third control switch, the power module can regulate the charge and discharge voltage between the battery and the external power supply. By connecting only the second control switch, a current loop can be formed between the power module and the battery, so that multiple batteries can be heated simultaneously, thereby improving heating efficiency.

[0020] In some embodiments, controlling the control switches in the control switch group based on an indication signal to switch the operating mode of the regulation circuit includes: in response to the indication signal indicating the boost / buck mode, controlling the first and third control switches to conduct and the second control switch to shut down, so that the regulation circuit enters the boost / buck mode; and in response to the indication signal indicating the battery heating mode, controlling the first and third control switches to shut down and the second control switch to conduct, so that the regulation circuit enters the battery heating mode. Thus, by controlling the first, second, and third control switches, the regulation circuit can switch between the boost / buck mode and the battery heating mode.

[0021] In some embodiments, the power module further includes a bus capacitor element and a battery capacitor element, the bus capacitor element being connected in parallel with each bridge arm of at least one bridge arm, and the two ends of the battery capacitor element being connected to the second end of each inductor element and the second end of each bridge arm, respectively. The regulation method further includes: controlling at least one control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element; and controlling at least one control switch in the control switch group to charge the other of the bus capacitor element and the battery capacitor element. By precharging the bus capacitor element or the battery capacitor element upon power-up, excessive current is avoided when the regulation circuit is connected to an external power source or battery, thereby preventing damage to the circuit.

[0022] In some embodiments, the control switch group further includes a pre-charge control device, which is connected in parallel with one of the first control switch, the second control switch, and the third control switch, wherein at least controlling the control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element includes: controlling the pre-charge control device to be turned on and the first control switch, the second control switch, and the third control switch to be turned off, so as to charge the one of the bus capacitor element and the battery capacitor element connected to the pre-charge control device, and wherein at least controlling the control switch in the control switch group to charge the other of the bus capacitor element and the battery capacitor element includes: controlling the pre-charge control device to be turned off and the control switch connected in parallel to the pre-charge control device to be turned on, so as to charge the other of the bus capacitor element and the battery capacitor element. The above-mentioned pre-charge control device can improve the safety of pre-charging the bus capacitor element and the battery capacitor element.

[0023] In some embodiments, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element includes: in response to a first preset condition, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element, wherein the first preset condition includes at least one of the following: the time for charging one of the bus capacitor element and the battery capacitor element is less than or equal to a first preset time threshold, and the voltage of one of the bus capacitor element and the battery capacitor element is greater than or equal to a first preset voltage threshold. This ensures that the voltage of the pre-charged battery capacitor element or the bus capacitor meets specific requirements (for example, close to the voltage of the battery or the voltage of the external power supply), thereby ensuring the normal operation of the regulation circuit.

[0024] In some embodiments, in response to the indication signal indicating the boost-buck mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode includes: in response to a second preset condition, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode, wherein the second preset condition includes at least one of the following: the time for charging the other of the bus capacitor element and the battery capacitor element is less than or equal to a second preset time threshold, and the voltage of the other of the bus capacitor element and the battery capacitor element is greater than or equal to a second preset voltage threshold. This ensures that the voltage of the pre-charged battery capacitor element or the bus capacitor meets specific requirements (for example, close to the voltage of the battery or the voltage of the external power supply), thereby ensuring the normal operation of the regulation circuit.

[0025] In some embodiments, the power module includes at least one bridge arm and at least one inductor element, the first end of each inductor element in the at least one bridge arm being connected to a corresponding one of the at least one bridge arm, each of the at least one bridge arm including a plurality of power semiconductor devices connected in series, the first end of each inductor element being connected between two power semiconductor devices in the corresponding one of the bridge arms, and the power module further including a flying capacitor element connected in parallel with the two power semiconductor devices, wherein at least controlling the control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element includes: for each bridge arm, controlling the power semiconductor devices other than the two power semiconductor devices in the plurality of power semiconductor devices to be turned on and the two power semiconductor devices to be turned off; and controlling the control switch in the control switch group to charge the flying capacitor element and one of the bus capacitor element and the battery capacitor element. In this way, the flying capacitor element can be pre-charged on power-up to avoid excessive current in the circuit when the regulation circuit is connected to an external power supply or battery, thereby damaging the circuit.

[0026] In some embodiments, the regulation method further includes: obtaining a historical voltage and a current voltage of the flying capacitor element; determining a difference between the historical voltage and the current voltage; and, in response to the difference between the historical voltage and the current voltage being greater than a preset difference threshold, controlling a plurality of power semiconductor devices of a bridge arm connected to the flying capacitor element to regulate the voltage of the flying capacitor element. This allows for real-time monitoring and regulation of the flying capacitor voltage to prevent sudden changes, thereby ensuring the normal operation of the regulation circuit.

[0027] In some embodiments, in response to an indication signal indicating a battery heating mode, controlling the first and third control switches to be off and the second control switch to be on so that the regulation circuit enters the battery heating mode includes: controlling the first and second control switches to be off and the third control switch to be on so as to at least reduce the voltage of the bus capacitor element; and, in response to a third preset condition, controlling the second control switch to be on and the third control switch to be off so that the regulation circuit enters the battery heating mode, wherein the third preset condition includes at least one of the following: a time for reducing the voltage of the bus capacitor element is less than or equal to a third preset time threshold and a voltage of the bus capacitor element is greater than or equal to a third preset voltage threshold. This ensures that the bus capacitor meets specific requirements (e.g., close to the battery voltage) in the battery heating mode, thereby allowing the regulation circuit to stably enter the battery heating mode.

[0028] In some embodiments, in response to an indication signal indicating a boost-buck mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode includes: in response to the regulation circuit being in the battery heating mode, adjusting the voltage of the battery capacitor element; in response to the voltage of the battery capacitor element being greater than or equal to a fourth preset voltage threshold, controlling the second control switch to be turned off and the third control switch to be turned on to charge the bus capacitor element; and in response to the voltage of the bus capacitor element being greater than or equal to a fifth preset voltage threshold, controlling the first control switch to be turned on so that the regulation circuit enters the boost-buck mode. This allows the regulation circuit to quickly switch to the boost-buck mode in the battery heating mode without having to reconnect the precharge control device to precharge the bus capacitor element.

[0029] According to an embodiment of the fourth aspect of the present application, a regulating device for the regulating circuit in the above embodiment is provided, comprising: an acquisition module, the acquisition module being configured to acquire an indication signal, the indication signal being used to indicate an operating mode of the regulating circuit, the operating modes including a boost / buck mode and a battery heating mode, wherein in the boost / buck mode, the power module is capable of regulating the voltage between the battery and an external power supply, and in the battery heating mode, the battery is capable of heating and increasing the temperature; and a control module, the control module being configured to control a control switch in a control switch group according to the indication signal, so as to cause the regulating circuit to switch the operating mode. This embodiment can achieve the same technical effects as the corresponding regulating method described above.

[0030] An embodiment of the fifth aspect of the present application provides an electronic device, comprising at least one processor and a memory communicatively connected to the at least one processor, wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the adjustment method in the above embodiment.

[0031] An embodiment of the sixth aspect of the present application provides a computer-readable storage medium storing computer instructions, wherein the computer instructions are configured to enable a computer to execute the adjustment method in the above embodiment.

[0032] An embodiment of the seventh aspect of the present application provides a computer program product, including a computer program, wherein the computer program implements the adjustment method in the above embodiment when executed by a processor.

[0033] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0035] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0036] FIG2 is a schematic structural diagram of a regulating circuit according to some embodiments of the present application;

[0037] FIG3 is a schematic circuit diagram of the regulation circuit in FIG2 , showing a power loop according to some embodiments;

[0038] FIG4 is a schematic circuit diagram of the regulating circuit in FIG2 , showing a power loop according to some other embodiments;

[0039] FIG5 is a schematic circuit diagram of the regulating circuit in FIG2 , showing a power loop according to some other embodiments;

[0040] FIG6 is a schematic circuit diagram of the regulating circuit in FIG2 , showing a power circuit and a control switch group according to some other embodiments;

[0041] FIG7 is a schematic circuit diagram of a regulating system according to some embodiments of the present application;

[0042] FIG8 is a flow chart of an adjustment method according to some embodiments of the present application;

[0043] 9a to 9e are schematic circuit diagrams of the regulating circuit in FIG3 in different states, wherein FIG9a shows that the pre-charge control device in the regulating circuit is in the on state, FIG9b shows that the first control switch in the regulating circuit is in the on state; FIG9c shows that the first control switch and the third control switch in the regulating circuit are in the on state; FIG9d shows that the third control switch in the regulating circuit is in the on state; and FIG9e shows that the second control switch in the regulating circuit is in the on state;

[0044] 10a to 10e are schematic circuit diagrams of the regulating circuit in FIG. 4 in different states, wherein FIG. 10a shows that the pre-charge control device in the regulating circuit is in the on state, FIG. 10b shows that the first control switch in the regulating circuit is in the on state; FIG. 10c shows that the first control switch and the third control switch in the regulating circuit are in the on state; FIG. 10d shows that the third control switch in the regulating circuit is in the on state; and FIG. 10e shows that the second control switch in the regulating circuit is in the on state;

[0045] FIG11 is a structural block diagram of an adjustment device according to some embodiments of the present application; and

[0046] FIG12 is a flow chart of adjustment methods according to other embodiments of the present application.

[0047] Description of reference numerals:

[0048] Vehicle 1000 ; Battery 100 . DETAILED DESCRIPTION

[0049] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0051] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0052] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0053] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0054] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0057] Currently, market developments indicate that batteries are increasingly being used. They are used as power batteries or energy storage batteries. Batteries are not only used as energy storage batteries in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used as power batteries in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As battery applications continue to expand, market demand is also growing.

[0058] The present applicant has noticed that the external characteristics of a battery are easily affected by the ambient temperature. For example, in a low temperature environment, the capacity of the battery will decrease, making it impossible to fully charge the battery, thereby reducing the battery's service life and effective capacity.

[0059] In order to avoid the problem of reduced battery capacity, the applicant, after in-depth research, provides a regulation circuit, a regulation system, a regulation method for a regulation circuit, a regulation device for a regulation circuit, an electronic device, a computer-readable storage medium, and a computer program product for a battery, so as to adjust the battery voltage or heat the battery to meet various battery operation requirements.

[0060] The implementation scheme of the present application sets a first control switch between the external power supply and the power module, sets a second control switch between the first control switch and the battery, and sets a third control switch between the power module and the battery, so that different operating modes of the regulation circuit (for example, boost and buck mode and battery heating mode) can be switched by controlling the first control switch, the second control switch and the third control switch to meet the battery charging and discharging voltage and operating temperature requirements in different scenarios.

[0061] The regulating circuit disclosed in the embodiment of the present application can be applied to energy storage devices (for example, batteries), wherein the battery can be a lithium-ion battery, a lithium metal battery, a lead-acid battery, a nickel-cathode battery, a nickel-metal hydride battery, a lithium-sulfur battery, a lithium-air battery or a sodium-ion battery, etc., which are not limited here. The battery can be used in an energy storage system. In addition, the battery can also be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. The electrical device can be, but not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include fixed or mobile electric toys, for example, game consoles, electric car toys, electric ship toys and electric airplane toys, etc., and the spacecraft can include airplanes, rockets, space shuttles and spacecraft, etc. In this way, it is conducive to meeting the requirements of the charge and discharge voltage and operating temperature of the battery in different scenarios.

[0062] The regulating circuit of the embodiment of the present application can be used in an energy storage system to regulate the battery in the energy storage system, and can also be used in electrical devices such as vehicles, ships or aircraft to regulate the battery in the electrical device. In the energy storage system, the battery regulated by the regulating circuit serves as an energy storage device of the energy storage system to store electrical energy and supply electrical energy. In the electrical device, for example, taking the vehicle 1000 shown in Figure 1 as an example, the battery 100 regulated by the regulating circuit can be used to power the vehicle 1000. For example, the battery 100 can be used as the operating power supply of the vehicle 1000, for example, for the starting, navigation and driving power requirements of the vehicle 1000. In addition, the battery 100 can also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0063] As shown in FIG2 , a regulation circuit 300 for a battery (such as the battery 100 shown in FIG1 ) in some embodiments of the present application may include a bus side S1, a battery side S2, a power module 310, and a control switch group 320. The battery side S2 is connected to the battery 100. The bus side S1 is connected to an external power source (not shown). The power module 310 is configured to regulate voltage and is connected between the battery side S2 and the bus side S1. The control switch group 320 may include a first control switch K1, a second control switch K2, and a third control switch K3. The first control switch K1 is connected between the bus side S1 and the power module 310. The second control switch K2 is connected between the first control switch K1 and the battery side S2. The third control switch K3 is connected between the power module 310 and the battery side S2.

[0064] The external power source can be any device that can provide power, such as a photovoltaic panel or a power grid. At least one of the first control switch, the second control switch, and the third control switch can be a controllable switching device such as a contactor or a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) tube. The power module 310 can be a module with any topology that can regulate the voltage in the circuit. For example, the power module 310 can select a non-multilevel topology (the power module 410 in the regulation circuit 400 shown in Figure 3) or a multilevel topology (the power module 510 in the regulation circuit 500 shown in Figure 4, the power module 610 in the regulation circuit 600 shown in Figure 5) as needed. In addition, a single bridge arm, a dual bridge arm, a three-bridge arm (the three bridge arms Q1, Q2, Q3 in the power module 410 shown in Figure 3; the three bridge arms Q1', Q2', Q3' in the power module 510 shown in Figure 4) or more bridge arms can also be selected in the power module 310. In addition, in this article, "connection" can refer to electrical connection.

[0065] The above embodiment can switch between different operating modes of the regulation circuit (for example, boost / buck mode and battery heating mode) by controlling the first, second, and third control switches to meet the battery charge / discharge voltage and operating temperature requirements in different scenarios. Furthermore, the above embodiment can heat multiple batteries simultaneously, thereby improving heating efficiency.

[0066] In this article, "boost / buck mode" refers to the mode in which the power module can regulate the voltage transmitted between the external power supply and the battery. "Battery heating mode" refers to the mode in which the battery can be heated.

[0067] According to some embodiments of the present application, the power module 310 may include at least one bridge arm and at least one inductor element, and a first end of each inductor element in the at least one bridge arm is connected to a corresponding one of the at least one bridge arm.

[0068] For example, as described above, the power module 310 may have the structure of the power module 410 shown in FIG3 , that is, it may include three bridge arms Q1, Q2, and Q3 and three inductance elements L1, L2, and L3 connected to the three bridge arms, respectively. Taking the inductance element L1 as an example, the first end of the inductance element L1 is connected to a corresponding bridge arm Q1. In addition, the power module 310 may also have the structure of the power module 510 shown in FIG4 , or may have the structure of the power module 610 shown in FIG5 . That is, the power module 310 may select a single bridge arm, a dual bridge arm (reducing one bridge arm from the three bridge arms in FIG3 ), a four-bridge arm, etc. as needed, and the present application is not limited thereto. When the power module 310 includes multiple bridge arms, the multiple bridge arms may be connected in parallel. The number of inductance elements may be the same as the number of bridge arms. Alternatively, the number of inductance elements may also be different from the number of bridge arms, for example, less than the number of bridge arms. In addition, each bridge arm may include multiple power semiconductor devices connected in series, for example, power semiconductor devices J1 and J2 in bridge arm Q1, power semiconductor devices J3 and J4 in bridge arm Q2, and power semiconductor devices J5 and J6 in bridge arm Q3 as shown in FIG. 3 .

[0069] The power semiconductor device may include an IGBT (Insulated Gate Bipolar Transistor), a MOSFET, a triode, etc. In addition, the inductive element may include an inductor or other device that can store energy and have a hysteresis effect on current changes.

[0070] On the one hand, the inductor element in the above-mentioned power module can be used to regulate the charge and discharge voltage of the battery in the boost and buck modes. On the other hand, in the battery heating mode, its hysteresis effect on current changes can be used to more quickly change the current direction in the current loop to perform higher-frequency pulse heating on the battery.

[0071] According to some embodiments of the present application, the first end of the first control switch is connected to the first end of the bus side, and the second end of the first control switch is connected to the first end of each bridge arm in at least one bridge arm, the first end of the second control switch is connected to the second end of the first control switch, and the second end of the second control switch is connected to the first end of the battery side, the first end of the third control switch is connected to the second end of each inductor element in at least one inductor element, and the second end of the third control switch is connected to the second end of the second control switch, and the second end of each bridge arm in at least one bridge arm is connected to the second end of the bus side and the second end of the battery side.

[0072] As shown in Figure 3 , the two ends of the first control switch K1 are respectively connected to the first end of the bus side S1 and the first end of each bridge arm in at least one bridge arm. The two ends of the second control switch K2 are respectively connected to the second end of the first control switch K1 and the first end of the battery side S2. The two ends of the third control switch K3 are respectively connected to the second end of each inductor in at least one inductor and the second end of the second control switch K2. Similarly, the first control switch K1, the second control switch K2, and the third control switch K3 in Figure 4 are also connected in the same manner.

[0073] As shown in Figure 3, if only the first and third control switches K1 and K3 are turned on, the external power supply and the battery are connected via the power module 410. At this point, the power module can perform its voltage regulation function, adjusting the voltage transmitted between the external power supply and the battery, meaning the regulation circuit enters a step-up or step-down mode. Whether the power module steps up or steps down the voltage depends on the duty cycle within the power module, which can be set by the upper-level controller. Alternatively, if only the second control switch K3 is turned on, the battery is disconnected from the external power supply, forming a current loop between the battery and the power module 410. The battery can then charge and discharge within this current loop, generating a pulsed current for heating, meaning the regulation circuit enters a battery heating mode. In this case, if the system includes multiple batteries and multiple regulation circuits connected to each of the batteries, it is convenient to independently control the heating of each battery and simultaneously heat multiple batteries.

[0074] The above embodiment can switch between different operating modes of the regulation circuit by controlling the first control switch, the second control switch, and the third control switch to meet the battery charge and discharge voltage and operating temperature requirements in different scenarios. In addition, the above embodiment can also heat multiple batteries simultaneously, thereby improving heating efficiency.

[0075] According to some embodiments of the present application, the power module 310 may further include a bus capacitor element and a battery capacitor element, the bus capacitor element is connected in parallel with each bridge arm of at least one bridge arm, and the two ends of the battery capacitor element are respectively connected to the second end of each inductor element and the second end of each bridge arm.

[0076] 3 and 4 , the busbar capacitor C1 is connected in parallel to the busbar side, and the battery capacitor C2 is connected in parallel to the battery side. Alternatively, the power module may include only busbar capacitors or only battery capacitors, and the present application is not limited thereto.

[0077] The above embodiment can stabilize the voltage on the bus side and the voltage on the battery side of the regulation circuit, thereby stabilizing the voltage of the entire regulation circuit.

[0078] According to some embodiments of the present application, each bridge arm in at least one bridge arm includes a plurality of power semiconductor devices connected in series, the first end of each inductor element is connected between two power semiconductor devices among the plurality of power semiconductor devices in the corresponding bridge arm, and the power module 310 may further include a flying capacitor element connected in parallel with the two power semiconductor devices.

[0079] That is, the power module 310 can be a multi-level topology, for example, a power module 510 (three-level structure) as shown in FIG4 , or a power module 610 (three-level structure) as shown in FIG5 . Specifically, for example, as shown in FIG4 , the first end of the inductor element L1 is connected between the two power semiconductor devices J12 and J13 of a corresponding bridge arm Q1 '. Similarly, the first ends of the inductor elements L2 and L3 are respectively connected between the two power semiconductor devices J22 and J23 of the bridge arm Q2 ' and between the two power semiconductor devices J32 and J33 of the bridge arm Q3 '. And the flying capacitor elements C3, C4, and C5 are respectively connected in parallel with the two power semiconductor devices J12 and J13, the two power semiconductor devices J22 and J23, and the two power semiconductor devices J32 and J33.

[0080] This can stabilize the voltage of the regulation circuit, thereby further improving the stability of the regulation circuit.

[0081] According to some embodiments of the present application, the control switch group 320 may further include a pre-charge control device, which is connected in parallel to at least one of the first control switch, the second control switch, and the third control switch.

[0082] For example, the control switch group 320 may have the structure of the control switch group 420 shown in Figure 3, the control switch group 520 shown in Figure 4, and the control switch group 620 shown in Figure 5, that is, the pre-charge control device Y4 is connected in parallel with the first control switch K1. At this time, the pre-charge control device Y4 is turned on, and the external power supply can pre-charge the bus capacitor element C1. For another example, the control switch group 320 may have the structure of the control switch group 720 of the regulating circuit 700 as shown in Figure 6, that is, the pre-charge control device Y4 is connected in parallel with the third control switch K3. At this time, the pre-charge control device Y4 is turned on, and the battery can pre-charge the battery capacitor element C2. For another example, the pre-charge control device may also be connected in parallel with the second control switch. For another example, two pre-charge control devices may be set to be connected in parallel with the first control switch and the second control switch, respectively. The present application is not limited to the above examples.

[0083] The pre-charge control device can achieve safer pre-charging of busbar capacitor elements or battery capacitor elements, so as to avoid excessive current in the circuit when the regulating circuit is connected to the external power supply or battery, thereby damaging the circuit.

[0084] According to some embodiments of the present application, the pre-charge control device may include a resistor element and a fourth control switch.

[0085] For example, as shown in Figures 3 to 6, the pre-charge control device Y4 may include a resistor element R1 and a fourth control switch K4. The fourth control switch may be a controllable power semiconductor device such as a contactor or a MOSFET tube.

[0086] This facilitates safe pre-charging of busbar capacitors or battery capacitors.

[0087] According to some embodiments of the present application, the regulation circuit 300 may further include a first fuse device FU1 and / or a second fuse device FU2, the first fuse device FU1 being connected between the first control switch K1 and the bus side S1, and the second fuse device FU2 being connected between each of the second control switch K2 and the third control switch K3 and the battery side S2.

[0088] Specifically, as shown in Figures 3 to 6, a first safety device FU1 is connected between the first control switch K1 and the busbar side S1, and a second safety device FU2 is connected between the second control switch K2 / third control switch K3 and the battery side S2. Each of the first and second safety devices can be a device capable of melting in the event of a short circuit, such as a fuse.

[0089] The above-mentioned safety device can protect the regulating circuit, thereby further improving the stability of the regulating circuit.

[0090] According to some embodiments of the present application, the regulation circuit 300 may further include a first lightning protection device F1 and / or a second lightning protection device F2, the input side of the first lightning protection device F1 is connected to the bus side S1, and the input side of the second lightning protection device F2 is connected to the battery side S2.

[0091] Specifically, as shown in FIG3 to FIG6 , the input side of the first lightning protection device F1 is connected in parallel with the external power supply, and the input side of the second lightning protection device F2 is connected in parallel with the battery.

[0092] The lightning protection device can prevent the regulating circuit from being struck by lightning, thereby protecting the circuit.

[0093] According to some embodiments of the present application, the power module 310 may further include a current detection module (such as the current detection modules M1, M2, and M3 shown in FIG6 ), a temperature detection module (such as the temperature detection module W1 shown in FIG6 ), etc. In some examples, each inductive element in the power module may be connected to a current detection module.

[0094] As shown in FIG. 7 , a regulation system 800 according to some embodiments of the present application may include: batteries D1 , D2 , D3 and regulation circuits T1 , T2 , T3 .

[0095] Among them, batteries D1, D2, and D3 can be the battery 100 shown in Figure 1. The features of the regulation circuits T1, T2, and T3 are consistent with those of the regulation circuit 300 in Figure 2 above, and will not be described in detail here. As shown in Figure 7, the regulation system 800 may include three batteries D1, D2, and D3 and three regulation circuits T1, T2, and T3 connected to the three batteries D1, D2, and D3 respectively. In this case, in the battery heating mode, each battery and the power module in its respective regulation circuit can form an independent current loop. Each battery can achieve pulse heating by charging and discharging in its respective current loop. At this time, the three regulation circuits can be controlled separately to achieve simultaneous heating of multiple batteries. It should be noted here that the regulation system may include one battery and one regulation circuit, or may include multiple batteries and multiple regulation circuits, and the present application is not limited to this.

[0096] The above embodiment can switch between different operating modes of the regulation circuit (for example, boost / buck mode and battery heating mode) by controlling the first, second, and third control switches to meet the battery charge / discharge voltage and operating temperature requirements in different scenarios. Furthermore, the above embodiment can heat multiple batteries simultaneously, thereby improving heating efficiency.

[0097] According to some embodiments of the present application, the regulation system 800 may further include an external power supply P1. The external power supply P1 has the same features as those described in reference to FIG2 and will not be described in detail here.

[0098] As shown in FIG. 8 , the regulating method 900 for the regulating circuit 300 according to some embodiments of the present application may include steps S901 and S902 .

[0099] In step S901, an indication signal is obtained, which is used to indicate the working mode of the regulation circuit. The working modes include boost and buck mode and battery heating mode. In the boost and buck mode, the power module can adjust the voltage between the battery and the external power supply, and in the battery heating mode, the battery can be heated and heated.

[0100] In step S902 , the control switches in the control switch group are controlled according to the instruction signal, so that the regulating circuit switches the operating mode.

[0101] In which, the above-mentioned regulation circuit can be the regulation circuit 300 in Figure 2, and the control switch group can be the control switch group 320 in Figure 2. In this article, "controlling the control switches in the control switch group" can refer to controlling the conduction and shutdown of the first control switch, the second control switch, the third control switch and other control switches in the control switch group. In some examples, the operating mode can also include a power-off mode and a standby mode. In which, the power-off mode refers to a mode in which the regulation circuit is in a state where the output power of the power module is zero and all the control switches are turned off. The standby mode refers to a mode in which the regulation circuit has not received any indication after power-on pre-charging.

[0102] The above embodiment enables the regulation circuit to switch between boost / buck mode and battery heating mode by controlling the first, second, and third control switches. Specifically, by connecting only the first and third control switches, the power module can regulate the charge and discharge voltages between the battery and the external power supply. By connecting only the second control switch, a current loop can be formed between the power module and the battery, allowing multiple batteries to be heated simultaneously, thereby improving heating efficiency.

[0103] According to some embodiments of the present application, step S902, controlling the control switches in the control switch group according to the indication signal so that the regulation circuit switches the operating mode may include: in response to the indication signal indicating the boost-buck mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off, so that the regulation circuit enters the boost-buck mode; and in response to the indication signal indicating the battery heating mode, controlling the first control switch and the third control switch to be turned off and the second control switch to be turned on, so that the regulation circuit enters the battery heating mode.

[0104] For example, as shown in Figure 9c, the first control switch K1 and the third control switch K3 are turned on, and the second control switch K2 is turned off. The external power supply and the battery will be connected together through the power module 410, and the regulation circuit can then enter the step-up and step-down mode. As shown in Figure 9e, the first control switch K1 and the third control switch K3 are turned off, and the second control switch K2 is turned on. The battery is disconnected from the external power supply and forms a current loop with the power module 410, and the regulation circuit can then enter the battery heating mode. For example, the battery can be charged and discharged in this current loop to achieve pulse heating. Similarly, as shown in Figure 10c, the first control switch K1 and the third control switch K3 are turned on, and the second control switch K2 is turned off, so that the regulation circuit enters the step-up and step-down mode. As shown in Figure 10e, the first control switch K1 and the third control switch K3 are turned off, and the second control switch K2 is turned on, so that the regulation circuit enters the battery heating mode.

[0105] Thus, by controlling the first control switch, the second control switch, and the third control switch, the regulation circuit can be switched between the voltage step-up and voltage step-down mode and the battery heating mode.

[0106] According to some embodiments of the present application, the power module further includes a bus capacitor element and a battery capacitor element, the bus capacitor element is connected in parallel with each bridge arm in at least one bridge arm, and the two ends of the battery capacitor element are respectively connected to the second end of each inductor element and the second end of each bridge arm, and the adjustment method 900 may further include: at least controlling the control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element; and at least controlling the control switch in the control switch group to charge the other of the bus capacitor element and the battery capacitor element.

[0107] Before the regulation circuit enters the boost / buck mode and / or the battery heating mode, the capacitor elements in the power module can be pre-charged in advance. This can avoid excessive current in the circuit when the regulation circuit is connected to the external power supply or battery, thereby avoiding damage to the circuit.

[0108] The above implementation can increase the stability of the regulation circuit.

[0109] According to some embodiments of the present application, the control switch group also includes a pre-charge control device, which is connected in parallel with at least one of the first control switch, the second control switch, and the third control switch, and controls at least the control switches in the control switch group to charge one of the bus capacitor element and the battery capacitor element, including: controlling the pre-charge control device to turn on and the first control switch, the second control switch, and the third control switch to turn off, so as to charge one of the bus capacitor element and the battery capacitor element connected to the pre-charge control device, and wherein, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element includes: controlling the pre-charge control device to turn off and the control switch connected in parallel to the pre-charge control device to turn on, so as to charge the other of the bus capacitor element and the battery capacitor element.

[0110] Specifically, as shown in Figure 9a, the pre-charge control device Y4 (more precisely, the fourth control device K4) is turned on, and the first control switch K1, the second control switch K2, and the third control switch K3 are turned off to form a current loop 101 between the external power supply, the pre-charge control device Y4, and the bus capacitor element C1. At this time, the external power supply can pre-charge the bus capacitor element C1 through the current loop 101. Then, as shown in Figure 9b, after the pre-charging of the bus capacitor element C1 is completed, the first control switch K1 is turned on, and the pre-charge control device Y4 is turned off to form a current loop 102 between the external power supply, the first control switch K1, and the battery capacitor element C2. At this time, the external power supply can pre-charge the battery capacitor element C2 through the current loop 102. Similarly, as shown in FIG10a, the pre-charge control device Y4 (more precisely, the fourth control device K4) is turned on, and the first control switch K1, the second control switch K2, and the third control switch K3 are turned off to form a current loop 111 between the external power supply, the pre-charge control device Y4, and the bus capacitor element C1. Then, as shown in FIG10b, after the bus capacitor element C1 is pre-charged, the first control switch K1 is turned on and the pre-charge control device Y4 is turned off to form a current loop 112 between the external power supply, the first control switch K1, and the battery capacitor element C2.

[0111] Alternatively, as shown in FIG6 , when the pre-charge control device Y4 is connected in parallel with the third control switch K3, the pre-charge control device Y4 is controlled to be turned on and the first control switch K1, the second control switch K2, and the third control switch K3 are turned off, thereby forming a current loop between the battery, the battery capacitor element C2, and the third control switch K3 for pre-charging the battery capacitor element C2. After the pre-charging of the battery capacitor element C2 is completed, the pre-charge control device Y4 is turned off and the third control switch K3 is turned on, thereby forming a current loop between the battery, the third control switch K3, and the bus capacitor element C1 for pre-charging the bus capacitor element C1.

[0112] It should be noted here that when the other of the busbar capacitor element and the battery capacitor element is powered on and pre-charged, in addition to turning on the corresponding control switch, it is also necessary to turn on some of the power semiconductor devices in the power module. As shown in Figure 9b, the power semiconductor device J1 of the upper bridge arm of the one-phase bridge arm Q1 in the power module 410 can be turned on to promote the formation of the current loop 102. Additionally or alternatively, other power semiconductor devices J2 and / or J3 in the power module 410 can also be turned on, and the present application is not limited to this. Similarly, as shown in Figure 10b, the power semiconductor devices J12 and J13 of the upper bridge arm of the one-phase bridge arm Q1' in the power module 510 can be turned on to promote the formation of the current loop 112. Additionally or alternatively, other power semiconductor devices in the power module 410 can also be turned on, and the present application is not limited to this.

[0113] The above-mentioned pre-charging control device can improve the safety of pre-charging the busbar capacitor element and the battery capacitor element.

[0114] In some other embodiments, without providing a pre-charge control device, controlling at least the control switches in the control switch group to charge one of the bus capacitor element and the battery capacitor element may include: controlling the first control switch to be turned on and the second and third control switches to be turned off, so as to charge the bus capacitor element. Then, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element may include: controlling some power semiconductor devices in the power module to be turned on, so as to charge the battery capacitor element.

[0115] In some other embodiments, without providing a pre-charge control device, controlling at least the control switches in the control switch group to charge one of the bus capacitor element and the battery capacitor element may also include: controlling the second control switch to be turned on and the first control switch and the third control switch to be turned off, so as to charge the battery capacitor element. Then, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element may include: controlling some power semiconductor devices in the power module to be turned on, so as to charge the bus capacitor element.

[0116] In some other embodiments, without providing a pre-charge control device, controlling at least the control switches in the control switch group to charge one of the bus capacitor element and the battery capacitor element may also include: controlling the third control switch to be turned on and the first control switch and the second control switch to be turned off, so as to charge the battery capacitor element. Then, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element may include: controlling some power semiconductor devices in the power module to be turned on, so as to charge the bus capacitor element.

[0117] According to some embodiments of the present application, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element includes: in response to a first preset condition, controlling at least the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element, wherein the first preset condition includes at least one of the following items: the time for charging one of the bus capacitor element and the battery capacitor element is less than or equal to a first preset time threshold, and the voltage of one of the bus capacitor element and the battery capacitor element is greater than or equal to a first preset voltage threshold.

[0118] That is to say, only when the power-on pre-charging of one of the bus capacitor element and the battery capacitor element meets the requirements (for example, the charging time cannot be too long, and the voltage of the capacitor element is greater than or equal to the preset voltage threshold), the power-on pre-charging of the other of the bus capacitor element and the battery capacitor element is performed. Wherein, in the case where one of the bus capacitor element and the battery capacitor element is a bus capacitor element (as shown in Figures 9a and 10a), the first preset voltage threshold can be set to be slightly less than the voltage of the external power supply, so that the voltage of the bus capacitor element after charging is close to the voltage of the external power supply. In the case where one of the bus capacitor element and the battery capacitor element is a battery capacitor element (as shown in Figure 6), the first preset voltage threshold can be set to a value slightly less than the voltage of the battery, so that the voltage of the battery capacitor element after charging is close to the voltage of the battery.

[0119] In addition, when the power module further includes a flying capacitor element, the first preset condition may further include that the voltage of the flying capacitor element is greater than or equal to a specific preset voltage threshold, wherein the specific preset voltage threshold may be set to be slightly less than half the voltage of the external power supply.

[0120] In some examples, the first preset time threshold may be set based on experience or based on characteristics of the regulating circuit.

[0121] In some examples, in response to a first preset condition, controlling at least a control switch in the control switch group to charge the other of the bus capacitor element and the battery capacitor element may include: in response to the first preset condition, controlling the pre-charge control device to turn off and the control switch connected in parallel to the pre-charge control device to turn on to charge the other of the bus capacitor element and the battery capacitor element.

[0122] This ensures that the voltage of the pre-charged battery capacitor or bus capacitor meets specific requirements (for example, close to the voltage of the battery or the voltage of the external power supply), thereby ensuring the normal operation of the regulation circuit.

[0123] According to some embodiments of the present application, in response to an indication signal indicating a boost-buck mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode includes: in response to a second preset condition, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode, wherein the second preset condition includes at least one of the following items: the time for charging the other of the bus capacitor element and the battery capacitor element is less than or equal to a second preset time threshold, and the voltage of the other of the bus capacitor element and the battery capacitor element is greater than or equal to a second preset voltage threshold.

[0124] That is to say, the regulation circuit enters the step-up and step-down mode only when the power-on pre-charging of the other of the bus capacitor element and the battery capacitor element meets the requirements (for example, the charging time cannot be too long, and the voltage of the capacitor element is greater than or equal to the preset voltage threshold). In which, when the other of the bus capacitor element and the battery capacitor element is a battery capacitor element (as shown in Figures 9a and 10a), the second preset voltage threshold can be set to be slightly less than the voltage of the battery, so that the voltage of the battery capacitor element after charging is close to the voltage of the battery. In addition, when the other of the bus capacitor element and the battery capacitor element is a bus capacitor element (as shown in Figure 6), the second preset voltage threshold can be set to be slightly less than the voltage of the external power supply, so that the voltage of the bus capacitor element after charging is close to the voltage of the external power supply.

[0125] In some examples, the second preset time threshold may be set based on experience or based on characteristics of the regulating circuit.

[0126] This ensures that the voltage of the pre-charged battery capacitor or bus capacitor meets specific requirements (for example, close to the voltage of the battery or the voltage of the external power supply), thereby ensuring the normal operation of the regulation circuit.

[0127] According to some embodiments of the present application, a power module includes at least one bridge arm and at least one inductor element, the first end of each inductor element in the at least one inductor element is connected to a corresponding one of the at least one bridge arm, each of the at least one bridge arm includes a plurality of power semiconductor devices connected in series, the first end of each inductor element is connected between two power semiconductor devices in the plurality of power semiconductor devices in the corresponding one of the bridge arms, and the power module also includes a flying capacitor element connected in parallel with the two power semiconductor devices, wherein at least controlling the control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element includes: for each bridge arm, controlling the power semiconductor devices except two power semiconductor devices in the plurality of power semiconductor devices to turn on and the two power semiconductor devices to turn off; and controlling the control switch in the control switch group to charge the bus capacitor element and one of the battery capacitor element and the flying capacitor element.

[0128] That is to say, when the power module also includes a flying capacitor, the flying capacitor element also needs to be pre-charged when it is powered on. As shown in Figure 10a, when the busbar capacitor element C1 is pre-charged when it is powered on, the flying capacitor elements C3, C4, and C5 are also pre-charged when it is powered on. At this time, the first and fourth power semiconductor devices J11, J14, J21, J24, J31, and J34 in each bridge arm Q1', Q2', and Q3' can be connected first; then the pre-charge control device Y4 is turned on, and the first, second, and third control switches K1, K2, and K3 are turned off to form a current loop 111 connecting the flying capacitor elements. Alternatively, the power semiconductor devices and the pre-charge control device Y4 other than the two power semiconductor devices in the multiple power semiconductor devices can also be turned on at the same time to pre-charge the flying capacitor elements, and the present disclosure is not limited to this.

[0129] In this case, the first preset condition may further include that the voltage of the flying capacitor element is greater than or equal to a specific preset voltage threshold. The specific preset voltage threshold may be set to be slightly less than half the voltage of the external power supply. This ensures that the voltage of the flying capacitor element after pre-charging is close to half the voltage of the external power supply, thereby meeting the requirements for normal operation of the regulation circuit.

[0130] In some examples, the control method of the above steps (i.e., controlling the control switches in the control switch group to charge the bus capacitor element and one of the battery capacitor element and the flying capacitor element) is the same as the control method of the aforementioned steps (i.e., at least controlling the control switches in the control switch group to charge one of the bus capacitor element and the battery capacitor element), and will not be described in detail here.

[0131] This allows the flying capacitor element to be pre-charged upon power-up to prevent excessive current from being generated in the circuit when the regulation circuit is connected to an external power supply or battery, thereby preventing the circuit from being damaged.

[0132] According to some embodiments of the present application, the adjustment method 900 may also include: obtaining the historical voltage and current voltage of the flying capacitor element; determining the difference between the historical voltage and the current voltage; and in response to the difference between the historical voltage and the current voltage being greater than a preset difference threshold, controlling multiple power semiconductor devices of the bridge arm to which the flying capacitor element is connected to adjust the voltage of the flying capacitor element.

[0133] For example, as shown in Figures 10a to 10e, when the voltage of the flying capacitor element C3 suddenly changes (i.e., the difference between its historical voltage and current voltage is greater than a preset difference threshold), the voltage of the flying capacitor element C3 can be adjusted by controlling the first power semiconductor device J11 and the second power semiconductor device J12 of the first phase bridge arm Q1' to be turned on and off alternately. It should be noted that other flying capacitor elements can also be adjusted using the above method, and the present application is not limited to the above example.

[0134] The above steps may be performed during the entire operation of the regulation circuit 300 to monitor the status of the flying capacitor element in real time.

[0135] In this way, the voltage of the flying capacitor can be monitored and adjusted in real time to avoid sudden changes, thereby ensuring the normal operation of the regulation circuit.

[0136] According to some embodiments of the present application, in response to an indication signal indicating a battery heating mode, controlling the first control switch and the third control switch to turn off and the second control switch to turn on so that the regulation circuit enters the battery heating mode includes: controlling the first control switch and the second control switch to turn off and the third control switch to turn on to at least reduce the voltage of the bus capacitor element; and in response to a third preset condition, controlling the second control switch to turn on and the third control switch to turn off so that the regulation circuit enters the battery heating mode, wherein the third preset condition includes at least one of the following items: the time for reducing the voltage of the bus capacitor element is less than or equal to a third preset time threshold and the voltage of the bus capacitor element is greater than or equal to a third preset voltage threshold.

[0137] Specifically, for example, after receiving the indication signal of the battery heating mode, as shown in Figure 9d, the first control switch K1, the second control switch K2 are turned off and the third control switch K3 is turned on (in some cases, some power semiconductor devices in the power module need to be turned on). At this time, a current loop 103 is formed between the battery, the third control switch K3 and the bus capacitor element C1 to discharge the bus capacitor element C1. For another example, when the power module also includes a flying capacitor element, as shown in Figure 10d, the first control switch K1, the second control switch K2 are turned off and the third control switch K3 and some power semiconductor devices in the power module are turned on. At this time, a current loop 113 is formed between the battery, the third control switch K3 and the bus capacitor element C1 and the flying capacitor elements C3-C5 to discharge the bus capacitor element C1 and the flying capacitor elements C3-C5. It should be noted here that when the control switch group also includes a pre-charge control device, the above-mentioned voltage reduction step also needs to keep the pre-charge control device turned off.

[0138] In addition, the regulation circuit enters the battery heating working mode only when the discharge of the bus capacitor element meets the requirements (for example, the discharge time cannot be too long, and the voltage of the bus capacitor element is greater than or equal to the third preset voltage threshold). The third preset voltage threshold can be set to be slightly less than the voltage of the battery, so that the voltage of the bus capacitor element after discharge is close to the voltage of the battery. Additionally, when the power module also includes a flying capacitor element, the third preset condition may also include that the voltage of the flying capacitor element is greater than or equal to a specific preset voltage threshold. The specific preset voltage threshold can be set to be slightly less than half of the battery voltage. This ensures that the voltage of the flying capacitor element after discharge is close to half of the battery voltage to meet the requirements for normal operation of the regulation circuit.

[0139] This ensures that the bus capacitance meets specific requirements (eg, close to the battery voltage) in the battery heating mode, thereby allowing the regulation circuit to stably enter the battery heating mode.

[0140] According to some embodiments of the present application, in response to an indication signal indicating a boost-buck mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode includes: in response to the regulation circuit being in a battery heating mode, adjusting the voltage of the battery capacitor element; in response to the voltage of the battery capacitor element being greater than or equal to a fourth preset voltage threshold, controlling the second control switch to be turned off and the third control switch to be turned on to charge the bus capacitor element; and in response to the voltage of the bus capacitor element being greater than or equal to a fifth preset voltage threshold, controlling the first control switch to be turned on so that the regulation circuit enters the boost-buck mode.

[0141] That is to say, when the regulation circuit is in the battery heating mode, the voltage of the battery capacitor element can be adjusted to a voltage close to that of the battery (that is, the fourth preset voltage threshold can be set to be slightly smaller than the voltage of the battery). Then, the second control switch is controlled to be turned off and the third control switch is turned on (at this time, the regulation circuit is in the battery heating mode, and the first control switch K1 can be not operated, that is, it remains in the off state) to pre-charge the bus capacitor element. Next, when the bus capacitor element is pre-charged to a voltage close to that of the external power supply (that is, the fifth preset voltage threshold can be set to be slightly smaller than the voltage of the external power supply), the first control switch is controlled to be turned on so that the regulation circuit enters the boost and buck mode. It should be noted here that the above steps should be performed in sequence so that the regulation circuit switches from the battery heating mode to the boost and buck mode.

[0142] In addition, when the power module further includes a flying capacitor element, in response to the voltage of the battery capacitor element being greater than or equal to a fourth preset voltage threshold, controlling the second control switch to turn off and the third control switch to turn on to charge the bus capacitor element may include: controlling the second control switch to turn off and the third control switch to turn on, as well as turning on some power semiconductor devices in the power module, to charge the bus capacitor element and the flying capacitor element. Furthermore, in response to the voltage of the bus capacitor element being greater than or equal to a fifth preset voltage threshold, controlling the first control switch to turn on to cause the regulation circuit to enter a step-up / step-down mode may include: controlling the first control switch to turn on to cause the regulation circuit to enter a step-up / step-down mode in response to the voltage of the bus capacitor element being greater than or equal to the fifth preset voltage threshold and the voltage of the flying capacitor element being greater than or equal to a specific preset voltage threshold. The specific preset voltage threshold may be set to be slightly less than half the voltage of the external power supply.

[0143] This allows the regulation circuit to quickly switch to the step-up / step-down mode in the battery heating mode without having to reconnect the pre-charge control device to pre-charge the busbar capacitor element.

[0144] Alternatively, the above-mentioned steps of pre-charging the bus capacitor element and the battery capacitor element may be repeated, that is, at least the control switch in the control switch group is controlled to charge one of the bus capacitor element and the battery capacitor element and at least the control switch in the control switch group is controlled to charge the other of the bus capacitor element and the battery capacitor element.

[0145] According to some embodiments of the present application, before precharging the busbar capacitor element and the battery capacitor element, the regulation method may further include performing a low-voltage power-on self-test on the regulation circuit 300. Specifically, for example, each relevant component in the regulation circuit 300 (including power semiconductor devices, control switches, battery contact switches, etc.) is tested to determine whether it has a fault.

[0146] According to some embodiments of the present application, after performing a power-on self-test, the adjustment method 900 may further include: in response to receiving a power-on pre-charge instruction, detecting whether the voltage of the external power supply and the voltage of the battery are within an allowable range. Thereafter, if the voltage of the external power supply and the voltage of the battery are within the allowable range, performing a power-on pre-charge step on the bus capacitor element and the battery capacitor element.

[0147] According to some embodiments of the present application, the regulation method 900 may further include: sending the current, voltage, and status information of each component of the regulation circuit to an upper-level controller, thereby facilitating the upper-level controller to monitor whether the regulation circuit 300 is operating normally.

[0148] According to some embodiments of the present application, the adjustment method 900 may also include: in response to the indication signal indicating the power-down mode, adjusting the output power of the power module; and in response to determining that the output power of the power module is equal to zero, controlling the first control switch, the second control switch and the third control switch to be turned off so that the adjustment circuit enters the power-down mode.

[0149] As shown in FIG11 , in some embodiments of the present application, a regulating device 1200 for the regulating circuit 300 in the above-described embodiment may include an acquisition module 1201 and a control module 1202. The acquisition module 1201 is configured to acquire an indication signal, which indicates the operating mode of the regulating circuit. The operating modes include a boost / buck mode and a battery heating mode. In the boost / buck mode, the power module can regulate the voltage between the battery and the external power supply, and in the battery heating mode, the battery can be heated and heated. The control module 1202 is configured to control the control switches in the control switch group according to the indication signal, so that the regulating circuit switches the operating mode.

[0150] It should be understood that the various modules of the apparatus 1200 shown in FIG11 may correspond to the various steps in the method 900 described with reference to FIG8 . Thus, the operations, features, and advantages described above for the method 900 are also applicable to the apparatus 1200 and the modules included therein. For the sake of brevity, certain operations, features, and advantages are not described in detail herein.

[0151] The above embodiment enables the regulation circuit to switch between boost / buck mode and battery heating mode by controlling the first, second, and third control switches. Specifically, by connecting only the first and third control switches, the power module can regulate the charge and discharge voltages between the battery and the external power supply. By connecting only the second control switch, a current loop can be formed between the power module and the battery, allowing multiple batteries to be heated simultaneously, thereby improving heating efficiency.

[0152] An embodiment of the present application provides an electronic device, comprising at least one processor and a memory communicatively connected to the at least one processor, wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned adjustment method 900.

[0153] An embodiment of the present application provides a computer-readable storage medium storing computer instructions, wherein the computer instructions are configured to enable a computer to execute the above-mentioned adjustment method 900.

[0154] An embodiment of the present application provides a computer program product, including a computer program, wherein the computer program implements the above-mentioned adjustment method 900 when executed by a processor.

[0155] As shown in FIG. 4 , a regulation circuit for a battery provided in some embodiments of the present application may include: a bus side S1 , a battery side S2 , a power module 510 , and a control switch group 520 .

[0156] The power module 510 is used to regulate voltage and is connected between the battery side S2 and the bus side S1. The power module 310 may include a bus capacitor element C1, a battery capacitor element C2, at least one bridge arm Q1', Q2', Q3', and at least one inductor element L1, L2, L3. The bus capacitor element C1 is connected in parallel with each of the at least one bridge arm, and the two ends of the battery capacitor element C2 are respectively connected to the second end of each inductor element and the second end of each bridge arm. Each bridge arm (e.g., Q1') includes a plurality of power semiconductor devices (e.g., J11, J12, J13, J14) connected in series, and the first end of each inductor element (e.g., L1) is connected between two power semiconductor devices (e.g., J12 and J13) of the plurality of power semiconductor devices of the corresponding bridge arm (e.g., Q1'), and the power module 510 may also include a flying capacitor element (e.g., C3) connected in parallel with the two power semiconductor devices (e.g., J12 and J13).

[0157] The control switch group 320 may include a first control switch K1, a second control switch K2, and a third control switch K3. The first end of the first control switch K1 is connected to the first end of the bus side S1, and the second end of the first control switch K1 is connected to the first end of each bridge arm in at least one bridge arm. The first end of the second control switch K2 is connected to the second end of the first control switch K1, and the second end of the second control switch K2 is connected to the first end of the battery side S2. The first end of the third control switch K3 is connected to the second end of each inductor in at least one inductor, and the second end of the third control switch K3 is connected to the second end of the second control switch K2. The second end of each bridge arm in at least one bridge arm is connected to the second end of the bus side S1 and the second end of the battery side S2. The control switch group 520 may also include a pre-charge control device Y4, which is connected in parallel with the first control switch K1.

[0158] As shown in FIG. 12 , the adjustment method 1300 for adjusting the circuit 300 provided in some embodiments of the present application may include the following steps S1301 to S1318 .

[0159] In step S1301 , a low-voltage power-on self-test is performed on the regulation circuit.

[0160] In step S1302 , in response to receiving the power-on pre-charge instruction, it is detected whether the voltage of the external power source and the voltage of the battery are within an allowable range.

[0161] In step S1303 , for each bridge arm, the power semiconductor devices except two power semiconductor devices among the plurality of power semiconductor devices are controlled to be turned on and the two power semiconductor devices are controlled to be turned off.

[0162] In step S1304 , the precharge control device is controlled to be turned on and the first control switch, the second control switch and the third control switch are controlled to be turned off, so as to charge the flying capacitor and one of the bus capacitor and the battery capacitor.

[0163] In step S1305, it is determined whether a first preset condition is met, the first preset condition including that the time for charging one of the bus capacitor element and the battery capacitor element is less than or equal to a first preset time threshold, the voltage of one of the bus capacitor element and the battery capacitor element is greater than or equal to a first preset voltage threshold, and the voltage of the flying capacitor element is greater than or equal to a specific preset voltage threshold.

[0164] In step S1306, the pre-charge control device is controlled to be turned off and the control switch connected in parallel with the pre-charge control device is turned on to charge the other of the bus capacitor element and the battery capacitor element.

[0165] In step S1307, determine whether a second preset condition is met, the second preset condition including that the time for charging the other of the bus capacitor element and the battery capacitor element is less than or equal to a second preset time threshold, and the voltage of the other of the bus capacitor element and the battery capacitor element is greater than or equal to a second preset voltage threshold.

[0166] In step S1308, an indication signal is acquired.

[0167] In step S1309 , in response to the indication signal indicating the boost / buck mode, the first control switch and the third control switch are controlled to be turned on and the second control switch is controlled to be turned off, so that the regulation circuit enters the boost / buck mode.

[0168] In step S1310 , in response to the indication signal indicating the battery heating mode, the first control switch and the second control switch are controlled to be turned off and the third control switch is controlled to be turned on, so as to at least reduce the voltage of the bus capacitor element.

[0169] In step S1311, determine whether a third preset condition is met, the third preset condition including at least one of the following: the time for reducing the voltage of the bus capacitor element is less than or equal to a third preset time threshold and the voltage of the bus capacitor element is greater than or equal to a third preset voltage threshold.

[0170] In step S1312 , the second control switch is controlled to be turned on and the third control switch is controlled to be turned off, so that the regulation circuit enters the battery heating mode.

[0171] In step S1313, an indication signal is acquired and it is determined whether the indication signal indicates a step-up / step-down mode.

[0172] In step S1314, the voltage of the battery capacitor is adjusted.

[0173] In step S1315 , in response to the voltage of the battery capacitor being greater than or equal to a fourth preset voltage threshold, the second control switch is controlled to be turned off and the third control switch is controlled to be turned on to charge the bus capacitor.

[0174] In step S1316 , in response to the indication signal indicating the power-down mode, the output power of the power module is adjusted.

[0175] In step S1317 , it is determined whether the output power of the power module is equal to zero.

[0176] In step S1318 , the first control switch, the second control switch, and the third control switch are controlled to be turned off, so that the regulating circuit enters a power-down mode.

[0177] Each step in the above method 1300 has the same features as the corresponding steps in the method 900. For the sake of brevity, they will not be described again here.

[0178] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A regulation circuit for a battery, comprising: A battery side, used for connecting to the battery; Busbar side, used for connection to external power supply; a power module, the power module being used to regulate voltage and connected between the battery side and the bus side; as well as A control switch group, the control switch group comprising: a first control switch connected between the bus side and the power module; a second control switch connected between the first control switch and the battery side; and A third control switch is connected between the power module and the battery side.

2. The regulating circuit according to claim 1, wherein: The power module includes at least one bridge arm and at least one inductor element, wherein a first end of each inductor element in the at least one bridge arm is connected to a corresponding one of the at least one bridge arm.

3. The regulating circuit according to claim 2, in, The first end of the first control switch is connected to the first end of the bus side, and the second end of the first control switch is connected to the first end of each bridge arm of the at least one bridge arm. The first end of the second control switch is connected to the second end of the first control switch, and the second end of the second control switch is connected to the first end of the battery side. The first end of the third control switch is connected to the second end of each inductor element of the at least one inductor element, and the second end of the third control switch is connected to the second end of the second control switch, and The second end of each bridge arm of the at least one bridge arm is connected to the second end of the busbar side and the second end of the battery side.

4. The regulating circuit according to claim 3, wherein: The power module also includes a busbar capacitor element and a battery capacitor element. The busbar capacitor element is connected in parallel with each bridge arm of the at least one bridge arm, and two ends of the battery capacitor element are respectively connected to the second end of each inductor element and the second end of each bridge arm.

5. The regulating circuit according to any one of claims 2 to 4, in, Each bridge arm of the at least one bridge arm includes a plurality of power semiconductor devices connected in series, a first end of each of the inductor elements is connected between two power semiconductor devices among the plurality of power semiconductor devices of the corresponding bridge arm, and The power module further includes a flying capacitor element connected in parallel with the two power semiconductor devices.

6. The regulating circuit according to any one of claims 1 to 5, wherein: The control switch group further includes a pre-charge control device, which is connected in parallel with at least one of the first control switch, the second control switch, and the third control switch.

7. The regulating circuit according to claim 6, wherein: The pre-charge control device includes a resistance element and a fourth control switch.

8. The regulating circuit according to any one of claims 1 to 7, further comprising: a first safety device connected between the first control switch and the busbar side; and / or A second safety device is connected between each of the second control switch and the third control switch and the battery side.

9. The regulating circuit according to any one of claims 1 to 8, further comprising: a first lightning protection device, wherein the input side of the first lightning protection device is connected to the busbar side; and / or A second lightning protection device, wherein an input side of the second lightning protection device is connected to the battery side.

10. A regulation system comprising a battery and a regulation circuit according to any one of claims 1 to 9.

11. A regulating method for a regulating circuit according to any one of claims 1 to 9, comprising: obtaining an indication signal, the indication signal being used to indicate an operating mode of the regulation circuit, the operating modes including a boost / buck mode and a battery heating mode, wherein in the boost / buck mode, the power module is capable of regulating the voltage between the battery and the external power supply, and in the battery heating mode, the battery is capable of being heated and heated; as well as According to the indication signal, the control switches in the control switch group are controlled to enable the regulating circuit to switch the working mode.

12. The adjustment method according to claim 11, wherein: According to the indication signal, controlling the control switches in the control switch group so that the regulating circuit switches to the operating mode includes: In response to the indication signal indicating the step-up / step-down mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off, so that the regulation circuit enters the step-up / step-down mode; and In response to the indication signal indicating the battery heating mode, the first control switch and the third control switch are controlled to be off and the second control switch is controlled to be on, so that the regulation circuit enters the battery heating mode.

13. The adjustment method according to claim 12, in, The power module further includes a busbar capacitor element and a battery capacitor element, wherein the busbar capacitor element is connected in parallel with each bridge arm of the at least one bridge arm, and two ends of the battery capacitor element are respectively connected to the second end of each inductor element and the second end of each bridge arm, and Wherein, the adjustment method further includes: controlling at least one control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element; and At least one control switch in the control switch group is controlled to charge the other of the bus capacitor element and the battery capacitor element.

14. The adjustment method according to claim 13, in, The control switch group further includes a pre-charge control device, which is connected in parallel with one of the first control switch, the second control switch, and the third control switch. Wherein, controlling at least one control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element comprises: Controlling the pre-charge control device to be turned on and the first control switch, the second control switch, and the third control switch to be turned off to charge one of the bus capacitor element and the battery capacitor element connected to the pre-charge control device, and Wherein, controlling at least the control switch in the control switch group to charge the other of the bus capacitor element and the battery capacitor element comprises: The pre-charge control device is controlled to be turned off and a control switch connected in parallel with the pre-charge control device is controlled to be turned on, so as to charge the other of the bus capacitor element and the battery capacitor element.

15. The adjustment method according to claim 13, in, Controlling at least one of the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element comprises: in response to a first preset condition, controlling at least one of the control switches in the control switch group to charge the other of the bus capacitor element and the battery capacitor element, and Among them, the first preset condition includes at least one of the following items: the time for charging said one of the bus capacitor element and the battery capacitor element is less than or equal to a first preset time threshold, and the voltage of said one of the bus capacitor element and the battery capacitor element is greater than or equal to a first preset voltage threshold.

16. The method according to any one of claims 13 to 15, in, In response to the indication signal indicating the boost-buck mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode includes: in response to a second preset condition, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost-buck mode, and The second preset condition includes at least one of the following items: the time for charging the other of the bus capacitor element and the battery capacitor element is less than or equal to a second preset time threshold, and the voltage of the other of the bus capacitor element and the battery capacitor element is greater than or equal to a second preset voltage threshold.

17. The method of regulating according to any one of claims 13 to 16, in, The power module includes at least one bridge arm and at least one inductor element, wherein a first end of each inductor element in the at least one bridge arm is connected to a corresponding one of the at least one bridge arm, each of the at least one bridge arm includes a plurality of power semiconductor devices connected in series, a first end of each of the inductors is connected between two power semiconductor devices in the plurality of power semiconductor devices in the corresponding one bridge arm, and the power module further includes a flying capacitor element connected in parallel with the two power semiconductor devices. Wherein, controlling at least one control switch in the control switch group to charge one of the bus capacitor element and the battery capacitor element comprises: For each of the bridge arms, controlling the power semiconductor devices other than the two power semiconductor devices among the plurality of power semiconductor devices to be turned on and the two power semiconductor devices to be turned off; and The control switches in the control switch group are controlled to charge the flying capacitor element and the one of the bus capacitor element and the battery capacitor element.

18. The adjustment method according to claim 17, further comprising: Acquiring a historical voltage and a current voltage of the flying capacitor element; determining a difference between the historical voltage and the current voltage; as well as In response to a difference between the historical voltage and the current voltage being greater than a preset difference threshold, a plurality of power semiconductor devices of a bridge arm to which the flying capacitor element is connected are controlled to adjust the voltage of the flying capacitor element.

19. The adjustment method according to any one of claims 13 to 18, wherein: In response to the indication signal indicating the battery heating mode, controlling the first control switch and the third control switch to be turned off and the second control switch to be turned on so that the regulation circuit enters the battery heating mode includes: Controlling the first control switch and the second control switch to be turned off and the third control switch to be turned on, so as to at least reduce the voltage of the bus capacitor element; and In response to a third preset condition, the second control switch is controlled to be turned on and the third control switch is controlled to be turned off, so that the regulation circuit enters the battery heating mode, wherein the third preset condition includes at least one of the following items: the time for reducing the voltage of the bus capacitor element is less than or equal to a third preset time threshold and the voltage of the bus capacitor element is greater than or equal to a third preset voltage threshold.

20. The adjustment method according to any one of claims 13 to 19, wherein: In response to the indication signal indicating the boost / buck mode, controlling the first control switch and the third control switch to be turned on and the second control switch to be turned off so that the regulation circuit enters the boost / buck mode includes: In response to the regulation circuit being in the battery heating mode, regulating a voltage of the battery capacitive element; In response to the voltage of the battery capacitor being greater than or equal to a fourth preset voltage threshold, controlling the second control switch to be turned off and the third control switch to be turned on, so as to charge the bus capacitor; and In response to the voltage of the bus capacitor element being greater than or equal to a fifth preset voltage threshold, the first control switch is controlled to be turned on, so that the regulation circuit enters the step-up and step-down mode.

21. A regulating device for a regulating circuit according to any one of claims 1 to 9, comprising: an acquisition module configured to acquire an indication signal, the indication signal being used to indicate an operating mode of the regulation circuit, the operating modes including a boost / buck mode and a battery heating mode. In the boost / buck mode, the power module is capable of regulating the voltage between the battery and the external power supply, and in the battery heating mode, the battery is capable of being heated and heated; as well as A control module is configured to control the control switches in the control switch group according to the indication signal, so that the regulation circuit switches the working mode.

22. An electronic device comprising at least one processor and a memory communicatively connected to the at least one processor, wherein: The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the adjustment method according to any one of claims 12 to 20.

23. A computer-readable storage medium storing computer instructions, wherein: The computer instructions are configured to cause a computer to execute the adjustment method according to any one of claims 12 to 20.

24. A computer program product comprising a computer program, wherein When the computer program is executed by a processor, the computer program implements the adjustment method according to any one of claims 12 to 20.

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