Charging circuit, control method thereof, driving system and vehicle

Abstract

The invention discloses a charging circuit, a control method of the charging circuit, a driving system and a vehicle. The driving circuit comprises a first electric control assembly and a second electric control assembly. The first end of the first electric control assembly is suitable for being connected with the anode of a power supply; the second end of the first electric control assembly is suitable for being connected with the cathode of the power supply; the first end of the second electric control assembly is suitable for being connected with the anode of the power supply; the second end of the second electric control assembly is suitable for being connected with the cathode of the power supply; the third end of the first electric control assembly is suitable for being connected with the anode of power supply equipment. The third end of the second electric control assembly is suitable for being connected with the cathode of the power supply equipment and is connected with the anode of the power supply equipment through the third end of the first electric control assembly; the third end of the second electric control assembly is connected with the negative electrode of the power supply equipment, isolation between the positive electrode of the power supply equipment and the negative electrode of the power supply equipment can be achieved, and the problem that the positive electrode and the negative electrode are communicated in the process that the power supply equipment charges an electric automobile is solved.

Description

Technical Field

[0001] The present invention relates to the field of charging technology, and in particular to a charging circuit and a control method thereof, a drive system and a vehicle. Background Art

[0002] With the rise of the new energy vehicle industry, it has entered a new stage of large-scale development. Currently, one of the difficulties electric vehicles face is the anxiety surrounding charging and range. According to research, there are a large number of low-voltage charging piles on the market, but the voltage platform of electric vehicles is trending towards a high-voltage platform, which poses a significant challenge to the compatibility of electric vehicles and charging piles. Existing solutions for boosting the voltage of electric vehicles using charging piles have the problem of positive and negative pole connectivity. Therefore, providing a boost charging solution that solves the problem of positive and negative pole connectivity is an industry development trend. Summary of the Invention

[0003] The object of the present invention is to provide a charging circuit and a control method thereof, a drive system and a vehicle, aiming to at least solve the problem of positive and negative pole connectivity when a charging pile boosts and charges an electric vehicle.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention provides a charging circuit, the charging circuit comprising: a first electronic control component and a second electronic control component;

[0006] The first end of the first electronic control component is suitable for being connected to the positive electrode of the power supply, and the second end of the first electronic control component is suitable for being connected to the negative electrode of the power supply;

[0007] The first end of the second electronic control component is suitable for being connected to the positive electrode of the power supply, and the second end of the second electronic control component is suitable for being connected to the negative electrode of the power supply;

[0008] The third end of the first electronic control component is suitable for being connected to the positive pole of the power supply device; the third end of the second electronic control component is suitable for being connected to the negative pole of the power supply device.

[0009] Based on the above solution, some embodiments of the present application provide a charging circuit, including: a first electronic control component and a second electronic control component; a first end of the first electronic control component is adapted to be connected to the positive pole of a power source, and a second end of the first electronic control component is adapted to be connected to the negative pole of the power source; a first end of the second electronic control component is adapted to be connected to the positive pole of the power source, and a second end of the second electronic control component is adapted to be connected to the negative pole of the power source; the charging circuit is connected to the positive pole of the power supply device through a third end of the first electronic control component; the third end of the second electronic control component is connected to the negative pole of the power supply device, which can achieve isolation between the positive pole and the negative pole of the power supply device, and solve the problem of short circuit between the positive and negative poles during the charging process of the power supply device to an electric vehicle.

[0010] In some embodiments, the power supply device includes a first power supply device and a second power supply device;

[0011] The third end of the first electronic control component is adapted to be connected to the positive poles of the first power supply device and the second power supply device; the third end of the second electronic control component is adapted to be connected to the negative poles of the first power supply device and the second power supply device.

[0012] In some embodiments, the first electronic control component includes:

[0013] A first inverter circuit, a first end of the first inverter circuit is adapted to be connected to the positive pole of the power source, and a second end of the first inverter circuit is adapted to be connected to the negative pole of the power source;

[0014] A first load, a first end of the first load is connected to the midpoint of the first inverter circuit, and a second end of the first load is adapted to be connected to the positive pole of the power supply device;

[0015] The second electronic control component includes:

[0016] A second inverter circuit, a first end of the second inverter circuit is adapted to be connected to the positive pole of the power source, and a second end of the second inverter circuit is adapted to be connected to the negative pole of the power source;

[0017] A second load, a first end of the second load is connected to the midpoint of the second inverter circuit, and a second end of the second load is adapted to be connected to the negative pole of the power supply device.

[0018] In some embodiments, the power supply device includes a first power supply device and a second power supply device; the second end of the first load is adapted to be connected to the positive pole of the first power supply device, and / or, the second end of the first load is adapted to be connected to the positive pole of the second power supply device;

[0019] The second end of the second load is adapted to be connected to the negative pole of the first power supply device, and / or, the second end of the second load is adapted to be connected to the negative pole of the second power supply device.

[0020] In some embodiments, the first inverter circuit includes: a first bridge arm; the first load includes: a first inductor;

[0021] A first end of the first inductor is connected between an upper bridge arm and a lower bridge arm of the first bridge arm. The first end of the first inductor is the first end of the first load, and the middle point of the first inverter circuit is between the upper bridge arm and the lower bridge arm of the first bridge arm;

[0022] Wherein, the upper bridge arm of the first bridge arm is adapted to be connected to the positive pole of the power supply; the lower bridge arm of the first bridge arm is adapted to be connected to the negative pole of the power supply.

[0023] In some embodiments, the first bridge arm includes: a first sub - bridge arm, a second sub - bridge arm, and a third sub - bridge arm;

[0024] The upper bridge arm of the first sub - bridge arm is adapted to be connected to the positive pole of the power supply; the lower bridge arm of the first sub - bridge arm is adapted to be connected to the negative pole of the power supply;

[0025] The upper bridge arm of the second sub - bridge arm is adapted to be connected to the positive pole of the power supply; the lower bridge arm of the second sub - bridge arm is adapted to be connected to the negative pole of the power supply;

[0026] The upper bridge arm of the third sub - bridge arm is adapted to be connected to the positive pole of the power supply; the lower bridge arm of the third sub - bridge arm is adapted to be connected to the negative pole of the power supply.

[0027] In some embodiments, the first inductor includes: a first sub - inductor, a second sub - inductor, and a third sub - inductor;

[0028] A first end of the first sub - inductor is connected between an upper bridge arm and a lower bridge arm of the first sub - bridge arm; a first end of the second sub - inductor is connected between an upper bridge arm and a lower bridge arm of the second sub - bridge arm; a first end of the third sub - inductor is connected between an upper bridge arm and a lower bridge arm of the third sub - bridge arm;

[0029] Wherein, a second end of the first sub - inductor, a second end of the second sub - inductor, and a second end of the third sub - inductor are connected together.

[0030] In some embodiments, the second inverter circuit includes: a second bridge arm; the second load includes: a second inductor;

[0031] A first end of the second inductor is connected between an upper bridge arm and a lower bridge arm of the second bridge arm. The first end of the second inductor is the first end of the second load, and the middle point of the second inverter circuit is between the upper bridge arm and the lower bridge arm of the second bridge arm;

[0032] Wherein, the upper arm of the second bridge arm is adapted to be connected to the positive electrode of the power supply; the lower arm of the second bridge arm is adapted to be connected to the negative electrode of the power supply.

[0033] In some embodiments, the second bridge arm includes: a fourth sub-bridge arm, a fifth sub-bridge arm, and a sixth sub-bridge arm;

[0034] The upper arm of the fourth sub-bridge arm is adapted to be connected to the positive electrode of the power supply; the lower arm of the fourth sub-bridge arm is adapted to be connected to the negative electrode of the power supply;

[0035] The upper arm of the fifth sub-bridge arm is adapted to be connected to the positive electrode of the power supply; the lower arm of the fifth sub-bridge arm is adapted to be connected to the negative electrode of the power supply;

[0036] The upper arm of the sixth sub-bridge arm is adapted to be connected to the positive electrode of the power supply; the lower arm of the sixth sub-bridge arm is adapted to be connected to the negative electrode of the power supply.

[0037] In some embodiments, the second inductor includes: a fourth sub-inductor, a fifth sub-inductor, and a sixth sub-inductor;

[0038] The first end of the fourth sub-inductor is connected between the upper arm and the lower arm of the fourth sub-bridge arm; the first end of the fifth sub-inductor is connected between the upper arm and the lower arm of the fifth sub-bridge arm; the first end of the sixth sub-inductor is connected between the upper arm and the lower arm of the sixth sub-bridge arm;

[0039] Wherein, the second ends of the fourth sub-inductor, the fifth sub-inductor, and the sixth sub-inductor are connected together.

[0040] In some embodiments, the charging circuit further includes: a first pre-charging element, the first end of the first pre-charging element is adapted to be connected to the positive electrode of the power supply, and the second end of the first pre-charging element is adapted to be connected to the negative electrode of the power supply.

[0041] In some embodiments, the charging circuit further includes: a second pre-charging element, the first end of the second pre-charging element is connected to the third end of the first electronic control component, and the second end of the second pre-charging element is connected to the third end of the second electronic control component.

[0042] In some embodiments, the charging circuit further includes: a seventh switch, the first end of the seventh switch is connected to the third end of the first electronic control component or the third end of the second electronic control component, and the second end of the seventh switch is connected to the second pre-charging element.

[0043] In some embodiments, the charging circuit further includes a first switch and a second switch;

[0044] The first end of the first switch is adapted to be connected to the positive electrode of the power supply, the second end of the first switch is connected to the first end of the first electronic control component, and / or the second end of the first switch is connected to the first end of the second electronic control component;

[0045] The first end of the second switch is adapted to be connected to the negative electrode of the power supply, the second end of the second switch is connected to the second end of the first electronic control component, and / or the second end of the second switch is connected to the second end of the second electronic control component.

[0046] In some embodiments, the charging circuit further includes a third switch, the first end of the third switch is connected to the third end of the first electronic control component, and the second end of the third switch is adapted to be connected to the positive electrode of the power supply device.

[0047] In some embodiments, the third switch includes a first sub-switch and a second sub-switch, the first end of the first sub-switch is connected to the third end of the first electronic control component, and the second end of the first sub-switch is connected to the second pre-charging element; the first end of the second sub-switch is connected to the third end of the first electronic control component, and the second end of the second sub-switch is connected to the positive electrode of the second power supply device.

[0048] In some embodiments, the charging circuit further includes a fourth switch, the first end of the fourth switch is connected to the third end of the second electronic control component, and the second end of the fourth switch is adapted to be connected to the negative electrode of the power supply device.

[0049] In some embodiments, the fourth switch includes a third sub-switch and a fourth sub-switch, the first end of the third sub-switch is connected to the third end of the second electronic control component, and the second end of the third sub-switch is connected to the negative electrode of the first power supply device; the first end of the fourth sub-switch is connected to the third end of the second electronic control component, and the second end of the fourth sub-switch is connected to the negative electrode of the second power supply device.

[0050] In a second aspect, the present application provides a control method for a charging circuit, which is applied to the charging circuit as described above; when the first switch, the second switch, the third switch, the fourth switch, the upper bridge arm of the first electronic control component, and the lower bridge arm of the second electronic control component are in a closed state, the power supply device is adapted to directly charge the power supply.

[0051] In some embodiments, when the third switch, the lower bridge arm of the first electronic control component, the lower bridge arm of the second electronic control component, and the fourth switch are in a closed state, the power supply device charges the first inductor of the first electronic control component and the second inductor of the second electronic control component.

[0052] In some embodiments, when the third switch, the upper arm of the first electronic control component, the first switch, the second switch, the lower arm of the second electronic control component, and the fourth switch are in the closed state, the power supply device, the first inductor of the first electronic control component, and the second inductor of the second electronic control component are adapted to boost and charge the power supply.

[0053] In a third aspect, the present application provides a drive system, including the charging circuit provided in any of the above embodiments.

[0054] In a fourth aspect, the present application provides a vehicle, including the charging circuit provided in any of the above embodiments; or, the drive system.

[0055] In a fifth aspect, the present application provides an electronic device, including: a processor and a memory for storing processor-executable instructions; wherein, the processor is configured to: execute the steps of the control method of the above charging circuit.

[0056] In a sixth aspect, the present application provides a computer-readable storage medium, on which computer instructions are stored. When the computer instructions run on a processor, the processor executes the control method of the above charging circuit.

[0057] In a seventh aspect, the present application provides a computer program product, which includes a computer program. When the computer program runs on a computer, the computer executes the control method of the above charging circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0059] Figure 1 It is a schematic diagram of a charging circuit provided by an embodiment of the present application;

[0060] Figure 2 It is a schematic diagram of another charging circuit provided by an embodiment of the present application;

[0061] Figure 3 It is a schematic diagram of a pre-charge circuit provided by an embodiment of the present application;

[0062] Figure 4 It is a schematic diagram of a boost charging circuit provided by an embodiment of the present application;

[0063] Figure 5Schematic diagram of another boost charging circuit provided by an embodiment of the present application;

[0064] Figure 6 Schematic diagram of a direct connection charging circuit provided by an embodiment of the present application;

[0065] Figure 7 Schematic diagram of the structure of a vehicle provided by an embodiment of the present application;

[0066] Figure 8 Schematic diagram of the structure of an electronic device provided by an embodiment of the present application.

[0067] Reference numerals: 1, first electronic control component; 11, first inverter circuit; 111, first arm; 1111, first sub-arm; 1112, second sub-arm; 1113, third sub-arm; 12, first load; 121, first inductor; 1211, first sub-inductor; 1212, second sub-inductor; 1213, third sub-inductor; 2, second electronic control component; 21, second inverter circuit; 211, second arm; 2111, fourth sub-arm; 2112, fifth sub-arm; 2113, sixth sub-arm; 221, second inductor; 2211, fourth sub-inductor; 2212, fifth sub-inductor; 2213, sixth sub-inductor; 22, second load; 2, second electronic control component; 61, first switch; 62, second switch; 51, first pre-charging element; 52, second pre-charging element; 63, third switch; 633, first sub-switch; 6, third sub-switch; 644, fourth sub-switch; 67, seventh switch; 100, charging circuit; 200, power supply; 300, power supply device; 301, first power supply device; 302, second power supply device; 400, drive system; 1000, vehicle. Detailed implementation manners

[0068] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0069] In the description of the invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or relative positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. Unless otherwise specified, under the condition of satisfying the relative positional relationship shown in the drawings, the above-described orientation description can be flexibly set during the actual application process.

[0070] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0071] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", and "communicated with" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the embodiments of the present invention, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, article or device including such element.

[0073] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean for example, illustration or explanation. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being more preferred or having more advantages than other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0074] With the rise of the new energy vehicle industry, the new energy vehicle industry has entered a new stage of large-scale development. At present, one of the dilemmas faced by electric vehicles is the anxiety about charging and endurance. According to the research situation, there are a large number of low-voltage charging piles in the market, but the voltage platform of electric vehicles tends to be a high-voltage platform, which poses a great challenge to the compatibility of the use of electric vehicles and charging piles. In the existing technology, there is a problem of positive and negative pole connection in the scheme of using a charging pile to boost the voltage of an electric vehicle. Therefore, providing a boost charging scheme to solve the positive and negative pole connection is the development trend of the industry.

[0075] Based on this, the embodiment of the present application provides a drive circuit. As Figure 1 shown, the charging circuit 100 includes: a first electronic control component 1 and a second electronic control component 2;

[0076] The first end of the first electronic control component 1 is adapted to be connected to the positive pole of the power supply 200, and the second end of the first electronic control component 1 is adapted to be connected to the negative pole of the power supply 200;

[0077] The first end of the second electronic control component 2 is adapted to be connected to the positive pole of the power supply 200, and the second end of the second electronic control component 2 is adapted to be connected to the negative pole of the power supply 200;

[0078] The third end of the first electronic control component 1 is adapted to be connected to the positive pole of the power supply device 300; the third end of the second electronic control component 2 is adapted to be connected to the negative pole of the power supply device 300.

[0079] In some embodiments, the charging circuit is connected to the positive pole of the power supply device 300 through the third end of the first electronic control component 1; the third end of the second electronic control component 2 is connected to the negative pole of the power supply device 300, and the isolation between the positive pole and the negative pole of the power supply device 300 can be realized. Even in the case of control failure of the first electronic control component 1 or the second electronic control component 2, the positive pole and the negative pole of the power supply device 300 will not be electrically connected together. Effectively solves the problem of positive and negative pole connection existing in the process of the power supply device 300 charging an electric vehicle.

[0080] In some embodiments, the positive pole of the power supply device 300 is connected to the first electronic control component, and the negative pole of the power supply device 300 is connected to the second electronic control component 2, where the first electronic control component 1 and the first electronic control component 2 are the motor electronic controls of a new energy vehicle, that is, the motor electronic control is reused for charging, and the boost charging function of the dual motor is realized with less wiring harness cost and the number of contactors.

[0081] In some embodiments, the power supply device 300 may be a charging pile or other devices that can supply power externally.

[0082] As Figure 2As shown, in some embodiments, the power supply device 300 includes a first power supply device 301 and a second power supply device 302;

[0083] The third terminal of the first electronic control component 1 is adapted to be connected to the positive poles of the first power supply device 301 and the second power supply device 302; the third terminal of the second electronic control component 2 is adapted to be connected to the negative poles of the first power supply device 301 and the second power supply device 302. That is, when the number of power supply devices is two, by electrically connecting the positive poles of the first power supply device 301 and the second power supply device 302 to the third terminal of the first electronic control component 1 simultaneously, and electrically connecting the negative poles of the first power supply device 301 and the second power supply device 302 to the third terminal of the second electronic control component 2 simultaneously, during the process of the first power supply device 301 and the second power supply device 302 charging the vehicle alone or simultaneously, isolation can be achieved between the positive pole and the negative pole of the first power supply device 301, or between the positive pole and the negative pole of the second power supply device 302, or between the positive pole of the first power supply device 301 and the negative pole of the second power supply device 302, or between the negative pole of the first power supply device 301 and the positive pole of the second power supply device 302. According to this principle, when the number of power supply devices is multiple, as long as the positive poles of the multiple power supply devices are connected to the third terminal of the first electronic control component 1 simultaneously, and the negative poles of the multiple power supply devices are connected to the third terminal of the second electronic control component 2 simultaneously, isolation between the positive and negative poles can be achieved during the charging process, and specific combinations are not elaborated here.

[0084] In some embodiments, the first electronic control component 1 includes: a first inverter circuit 11, the first terminal of the first inverter circuit 11 is adapted to be connected to the positive pole of the power supply 200, and the second terminal of the first inverter circuit 11 is adapted to be connected to the negative pole of the power supply 200;

[0085] a first load 12, the first terminal of the first load 12 is connected to the midpoint of the first inverter circuit 11, and the second terminal of the first load 12 is adapted to be connected to the positive pole of the power supply device 300. The second terminal of the first load 12 is the third terminal of the first electronic control component 1 mentioned above.

[0086] The second electronic control component 2 includes:

[0087] a second inverter circuit 21, the first terminal of the second inverter circuit 21 is adapted to be connected to the positive pole of the power supply 200, and the second terminal of the second inverter circuit 21 is adapted to be connected to the negative pole of the power supply 200;

[0088] a second load 22, the first terminal of the second load 22 is connected to the midpoint of the second inverter circuit 21, and the second terminal of the second load 22 is adapted to be connected to the negative pole of the power supply device 300. The second terminal of the second load 22 is the third terminal of the second electronic control component 2 mentioned above.

[0089] In some embodiments, the first electronic control component 1 and / or the second electronic control component 2 is the motor electronic control on a new energy vehicle, the first inverter circuit 11 and / or the second inverter circuit 21 is the bridge arm of the motor controller, and the midpoint of the above-mentioned first inverter circuit 11 or the midpoint of the second inverter circuit 21 is the connection point between the upper and lower bridge arms of the motor controller bridge arm. The first load 12 and / or the second load 22 is the motor. The third terminal of the first electronic control component 1 and / or the third terminal of the second electronic control component 2 is the neutral point of the motor.

[0090] In some embodiments, the power supply device 300 includes a first power supply device 301 and a second power supply device 302, that is, the number of power supply devices 300 is two. At this time, the second terminal of the first load 12 is adapted to be connected to the positive pole of the first power supply device 301, and / or the second terminal of the first load 12 is adapted to be connected to the positive pole of the second power supply device 302;

[0091] The second terminal of the second load 22 is adapted to be connected to the negative pole of the first power supply device 301, and / or the second terminal of the second load 22 is adapted to be connected to the negative pole of the second power supply device 302.

[0092] In some embodiments, when the first load 12 is a motor and the power supply device 300 is a charging pile, the neutral point of the first motor is adapted to be connected to the positive line of the first charging pile; and the neutral point of the first motor (the neutral point is also called the "zero point". It refers to the common point of the star connection in a three-phase or polyphase AC system.) is adapted to be connected to the positive line of the second charging pile; the specific connection scheme can be that the positive lines of the first charging pile and the second charging pile are simultaneously connected to the neutral point of the first motor, or the positive lines of the first charging pile and the second charging pile are first connected together and then connected to the neutral point of the first motor through a common connecting line.

[0093] In some embodiments, when the second load 22 is a motor and the power supply device 300 is a charging pile, the neutral point of the second motor is adapted to be connected to the negative line of the first charging pile; and the neutral point of the second motor is adapted to be connected to the negative line of the second charging pile; the specific connection scheme can be that the negative lines of the first charging pile and the second charging pile are simultaneously connected to the neutral point of the second motor, or the negative lines of the first charging pile and the second charging pile are first connected together and then connected to the neutral point of the second motor through a common connecting line.

[0094] Such as Figure 2As shown, in some embodiments, the first inverter circuit 11 includes: a first bridge arm 111; the first load 12 includes: a first inductor 121; wherein, the first bridge arm 111 needs to have a switching function, and in some embodiments, the specific implementation manner can be a MOS transistor or an IGBT. The first inductor 121 needs to have the function of storing energy, and the specific implementation manner can be an inductor or a circuit with the function of storing energy.

[0095] The first end of the first inductor 121 is connected between the upper bridge arm and the lower bridge arm of the first bridge arm 111, that is, two switching elements need to be provided on the first bridge arm 111, and the first end of the first inductor 121 is connected between the two switching elements. The first end of the first inductor 121 is the first end of the first load 12, and the middle point of the first inverter circuit 11 is between the upper bridge arm and the lower bridge arm of the first bridge arm 111 (between the two switching elements);

[0096] Wherein, the upper bridge arm of the first bridge arm 111 is adapted to be connected to the positive pole of the power supply 200; the lower bridge arm of the first bridge arm 111 is adapted to be connected to the negative pole of the power supply 200.

[0097] In some embodiments, the power supply 200 can be a power battery of a new energy vehicle.

[0098] In some embodiments, the first bridge arm 111 includes: a first sub-bridge arm 1111, a second sub-bridge arm 1112 and a third sub-bridge arm 1113;

[0099] The upper bridge arm of the first sub-bridge arm 1111 is adapted to be connected to the positive pole of the power supply 200; the lower bridge arm of the first sub-bridge arm 1111 is adapted to be connected to the negative pole of the power supply 200;

[0100] The upper bridge arm of the second sub-bridge arm 1112 is adapted to be connected to the positive pole of the power supply 200; the lower bridge arm of the second sub-bridge arm 1112 is adapted to be connected to the negative pole of the power supply 200;

[0101] The upper bridge arm of the third sub-bridge arm 1113 is adapted to be connected to the positive pole of the power supply 200; the lower bridge arm of the third sub-bridge arm 1113 is adapted to be connected to the negative pole of the power supply 200.

[0102] In some embodiments, the first inductor 121 includes: a first sub-inductor 1211, a second sub-inductor 1212 and a third sub-inductor 1213;

[0103] The first end of the first sub-inductor 1211 is connected between the upper bridge arm and the lower bridge arm of the first sub-bridge arm 1111; the first end of the second sub-inductor 1212 is connected between the upper bridge arm and the lower bridge arm of the second sub-bridge arm 1112; the first end of the third sub-inductor 1213 is connected between the upper bridge arm and the lower bridge arm of the third sub-bridge arm 1113;

[0104] As described above, the first electronic control component 1 is composed of three bridge arms and three inductors. Compared with one bridge arm and one inductor, a larger boost range can be obtained on the premise that both can achieve the boost charging function. That is, on the premise that the inductor specifications are the same, three inductors can store more voltage than one inductor. Thus, in the actual use process, the number of inductors participating in the boost charging can be flexibly selected according to the actual use requirements to obtain a larger boost charging range.

[0105] Among them, the second ends of the first sub-inductor 1211, the second sub-inductor 1212, and the third sub-inductor 1213 are connected together. In some embodiments, when the first load 12 is a motor, the second ends of the first sub-inductor 1211, the second sub-inductor 1212, and the third sub-inductor 1213 are connected together to form the neutral point of the motor.

[0106] In some embodiments, the second inverter circuit 21 includes: a second bridge arm 211; the second load 22 includes: a second inductor 221. Among them, the second bridge arm 211 needs to have a switching function. In some embodiments, the specific implementation method can be a MOS transistor or an IGBT. The second inductor 221 needs to have the function of storing energy, and the specific implementation method can be an inductor or a circuit with the function of storing energy.

[0107] The first end of the second inductor 221 is connected between the upper bridge arm and the lower bridge arm of the second bridge arm 211. That is, two switching elements need to be provided on the second bridge arm 211, and the first end of the second inductor 221 is connected between the two switching elements. The first end of the second inductor 221 is the first end of the second load 22, and the midpoint of the second inverter circuit 21 is between the upper bridge arm and the lower bridge arm of the second bridge arm 211 (between the two switching elements);

[0108] Among them, the upper bridge arm of the second bridge arm 211 is adapted to be connected to the positive pole of the power supply 200; the lower bridge arm of the second bridge arm 211 is adapted to be connected to the negative pole of the power supply 200.

[0109] In some embodiments, the power supply 200 can be the power battery of a new energy vehicle.

[0110] In some embodiments, the second bridge arm 211 includes: a fourth sub-bridge arm 2111, a fifth sub-bridge arm 2112, and a sixth sub-bridge arm 2113;

[0111] The upper bridge arm of the fourth sub-bridge arm 2111 is adapted to be connected to the positive pole of the power supply 200; the lower bridge arm of the fourth sub-bridge arm 2111 is adapted to be connected to the negative pole of the power supply 200;

[0112] The upper arm of the fifth sub-bridge arm 2112 is adapted to be connected to the positive pole of the power supply 200; the lower arm of the fifth sub-bridge arm 2112 is adapted to be connected to the negative pole of the power supply 200;

[0113] The upper arm of the sixth sub-bridge arm 2113 is adapted to be connected to the positive pole of the power supply 200; the lower arm of the sixth sub-bridge arm 2113 is adapted to be connected to the negative pole of the power supply 200.

[0114] In some embodiments, the second inductor 221 includes: a fourth sub-inductor 2211, a fifth sub-inductor 2212, and a sixth sub-inductor 2213;

[0115] The first end of the fourth sub-inductor 2211 is connected between the upper arm and the lower arm of the fourth sub-bridge arm 2111; the first end of the fifth sub-inductor 2212 is connected between the upper arm and the lower arm of the fifth sub-bridge arm 2112; the first end of the sixth sub-inductor 2213 is connected between the upper arm and the lower arm of the sixth sub-bridge arm 2113;

[0116] As described above, the second electronic control component 2 is composed of 3 bridge arms and 3 inductors. Compared with 1 bridge arm and 1 inductor, a larger boost range can be obtained on the premise that the boost charging function can be achieved. That is, on the premise that the inductor specifications are the same, 3 inductors will store more voltage than 1 inductor. Thus, in the actual use process, the number of inductors participating in the boost charging can be flexibly selected according to the actual use requirements to obtain a larger boost charging range.

[0117] Wherein, the second ends of the fourth sub-inductor 2211, the fifth sub-inductor 2212, and the sixth sub-inductor 2213 are connected together. In some embodiments, when the second load 22 is a motor, the second ends of the fourth sub-inductor 2211, the fifth sub-inductor 2212, and the sixth sub-inductor 2213 are connected together to form the neutral point of the motor.

[0118] As Figure 1 shown, in some embodiments, the charging circuit 100 further includes: a first pre-charging element 51, the first end of the first pre-charging element 51 is adapted to be connected to the positive pole of the power supply 200, and the second end of the first pre-charging element 51 is adapted to be connected to the negative pole of the power supply 200. In a new energy vehicle, the first pre-charging element 51 is an electric vehicle high-voltage pre-charging capacitor, which is connected in parallel with the power battery. The main functions of the electric vehicle high-voltage pre-charging capacitor include protecting the power battery and the circuit, balancing the bus voltage fluctuation, and ensuring high-voltage safety.

[0119] In some embodiments, the charging circuit 100 further includes: a second pre-charging element 52, the first end of the second pre-charging element 52 is connected to the third end of the first electronic control component 1, and the second end of the second pre-charging element 52 is connected to the third end of the second electronic control component 2.

[0120] As shown Figure 3 in the figure, it is a schematic diagram of the circuit pre - charging of the charging circuit before formal charging. Electrical energy starts from the positive pole of the power supply 200, flows through the upper bridge arm of the first inverter circuit 11, then passes through the first load 12 to store energy in the second pre - charging element 52, and then flows back to the negative pole of the power supply 200 through the second load 22 and the lower bridge arm of the second inverter circuit 21. When the voltage across the second pre - charging element 52 is the same as the voltage across the power supply 200, the pre - charging ends. Next, boost charging or direct - connection charging can be performed on the power supply 200.

[0121] In some embodiments, the charging circuit 100 further includes: a seventh switch 67. The first end of the seventh switch 67 is connected to the third end of the first electronic control component 1 or the third end of the second electronic control component 2, and the second end of the seventh switch 67 is connected to the second pre - charging element 52.

[0122] During the above - mentioned pre - charging process of the second pre - charging element 52, the seventh switch 67 needs to be closed. After the pre - charging ends, during the charging process, the seventh switch 67 still needs to be closed. At this time, the second pre - charging element 52 is connected to the charging circuit to provide steady - current protection for the charging process.

[0123] In some embodiments, the charging circuit 100 further includes a first switch 61 and a second switch 62. Among them, the first switch 61 and the second switch 62 can be contactors. Specifically, in new energy vehicles, they are DC contactors, which mainly play the role of controlling the on - off of the circuit to achieve functions such as charging and discharging, and when there is an abnormality in the vehicle's high - voltage system, the contactors are timely disconnected to protect the high - voltage system.

[0124] The first end of the first switch 61 is adapted to be connected to the positive pole of the power supply 200, and the second end of the first switch 61 is connected to the first end of the first electronic control component 1, and / or the second end of the first switch 61 is connected to the first end of the second electronic control component 2;

[0125] The first end of the second switch 62 is adapted to be connected to the negative pole of the power supply 200, and the second end of the second switch 62 is connected to the second end of the first electronic control component 1, and / or the second end of the second switch 62 is connected to the second end of the second electronic control component 2.

[0126] As described above, the first switch 61 and the second switch 62 are respectively arranged between the positive pole of the power supply 200 and the first electronic control component 1, and between the negative pole of the power supply 200 and the second electronic control component 2, and can be timely disconnected when any one of the first electronic control component 1 or the second electronic control component 2 has an abnormality to protect the high - voltage circuit.

[0127] In some embodiments, the charging circuit 100 further includes a third switch. The first end of the third switch is connected to the third end of the first electronic control component 1, and the second end of the third switch is adapted to be connected to the positive pole of the power supply device 300. The third switch can be a contactor. Specifically, in a new energy vehicle, the third switch is a DC contactor, which mainly controls the on / off of the circuit to achieve functions such as charging and discharging. It can also be disconnected in time when the vehicle high-voltage system is abnormal to protect the high-voltage system.

[0128] In some embodiments, the third switch includes a first sub-switch 633 and a second sub-switch 634. The first end of the first sub-switch 633 is connected to the third end of the first electronic control component 1, and the second end of the first sub-switch 633 is connected to the second pre-charging element 52; that is, the first sub-switch 633 is arranged between the third end of the first electronic control component 1 and the second pre-charging element 52. In some embodiments, the first sub-switch 633 can also be arranged between the second pre-charging element 52 and the first power supply device 301. For charging the power supply 200, the functions of the two positions are the same. The first end of the second sub-switch 634 is connected to the third end of the first electronic control component 1, and the second end of the second sub-switch 634 is connected to the positive pole of the second power supply device 302. More specifically, it is arranged between the second pre-charging element 52 and the positive pole of the second power supply device 302.

[0129] In some embodiments, the first sub-switch 633 and the second sub-switch 634 can be contactors, and their function is to control the on / off between the positive poles of the first power supply device 301 and the second power supply device 302 and the vehicle for charging and circuit protection.

[0130] In some embodiments, the charging circuit 100 further includes a fourth switch. The first end of the fourth switch is connected to the third end of the second electronic control component 2, and the second end of the fourth switch is adapted to be connected to the negative pole of the power supply device 300. The fourth switch can be a contactor. Specifically, in a new energy vehicle, the fourth switch is a DC contactor, which mainly controls the on / off of the circuit to achieve functions such as charging and discharging. It can also be disconnected in time when the vehicle high-voltage system is abnormal to protect the high-voltage system.

[0131] In some embodiments, the fourth switch includes a third sub-switch 643 and a fourth sub-switch 644. The first end of the third sub-switch 643 is connected to the third end of the second electronic control component 2, and the second end of the third sub-switch 643 is connected to the negative pole of the first power supply device 301; that is, the third sub-switch 643 is arranged between the third end of the second electronic control component 2 and the negative pole of the first power supply device 301. The first end of the fourth sub-switch 644 is connected to the third end of the second electronic control component 2, and the second end of the fourth sub-switch 644 is connected to the negative pole of the second power supply device 302. That is, the fourth sub-switch 644 is arranged between the third end of the second electronic control component 2 and the negative pole of the second power supply device 302.

[0132] In a second aspect, the present application provides a control method for a charging circuit, which is applied to the above-mentioned charging circuit 100; when the first switch 61, the second switch 62, the third switch, the fourth switch, the upper arm of the first electronic control component 1 and the lower arm of the second electronic control component 2 are in a closed state, the power supply device 300 is adapted to directly charge the power supply 200.

[0133] As Figure 6 shown, a circuit schematic diagram for directly charging the power supply 200 by the first power supply device 301 is provided. Electric energy flows out from the positive pole of the first power supply device 301, flows into the first inductor 121 after passing through the first sub-switch 633, then flows into the positive pole of the power supply 200 after passing through the upper arm of the first bridge arm 111, and after passing through the negative pole of the power supply 200, flows into the second inductor 221 through the lower arm of the second bridge arm 211, and then flows back to the negative pole of the first power supply device 301. During the direct charging process in this embodiment, the first inductor 121 and the second inductor 221 only act as wires after the charging is stable. In some embodiments, when it is necessary to directly charge the power supply 200 by the first power supply device 301 and the second power supply device 302 simultaneously, on the basis of directly charging the power supply 200 by the first power supply device 301 alone, only the second sub-switch 634 and the fourth sub-switch 644 need to be closed. When the charging circuit 100 described in the present application performs direct charging, when the lower arm of the first bridge arm 111 is mis-conducted, the current will flow into the lower arm of the second bridge arm 211. Compared with the prior art, it will not directly flow back to the negative pole of the first power supply device 301, causing a short circuit between the positive pole and the negative pole of the first power supply device 301 and posing a safety hazard.

[0134] In some embodiments, the present application can also boost-charge the power supply 200 through the power supply device 300 (for example: when the voltage of the power battery of a vehicle is higher than the voltage of a charging pile and the user has a charging requirement), and the boost-charging process is divided into the following two steps:

[0135] As Figure 4 shown, it is the first step of boost-charging; when the third switch, the lower arm of the first electronic control component 1, the lower arm of the second electronic control component 2, and the fourth switch are in a closed state, the power supply device 300 charges the first inductor 121 of the first electronic control component 1 and the second inductor 221 of the second electronic control component 2.

[0136] Specifically, take the example of the first power supply device 301 boosting and charging the power supply 200. Electric energy flows out from the positive electrode of the first power supply device 301, flows through the first sub-switch 633 and then into the first inductor 121, then flows through the lower arm of the first bridge arm 111 and then into the lower arm of the second bridge arm 211, then flows into the second inductor 221, and finally flows back to the negative electrode of the first power supply device 301 after passing through the third sub-switch 643. In this step, the first power supply device 301 stores energy in the first inductor 121 and the second inductor 221. <s

[0137] In the actual control process, according to the usage requirements, the number of bridge arms and inductors participating in this step can be controlled. In some embodiments, the above-mentioned first sub-bridge arm 1111, second sub-bridge arm 1112, third sub-bridge arm 1113, first sub-inductor 1211, second sub-inductor 1212, third sub-inductor 1213, fourth sub-bridge arm 2111, fifth sub-bridge arm 2112, sixth sub-bridge arm 2113, fourth sub-inductor 2211, fifth sub-inductor 2212, and sixth sub-inductor 2213 all participate in the first step. That is, the first power supply device 301 stores energy in the first sub-inductor 1211, second sub-inductor 1212, third sub-inductor 1213, fourth sub-inductor 2211, fifth sub-inductor 2212, and sixth sub-inductor 2213 simultaneously. Since the number of inductors participating in storing electric energy is the largest at the same time, the stored electric energy is the largest, and the boosting range is the largest at this time. When a large boosting range is not required, a relatively small number of inductors can also be selected to participate in energy storage, and its operation principle is the same as the above description and will not be elaborated here.

[0138] As Figure 5 shown, it is the second step of boosting and charging; in some embodiments, when the third switch, the upper arm of the first electronic control component 1, the first switch 61, the second switch 62, the lower arm of the second electronic control component 2, and the fourth switch are in the closed state, the power supply device 300, the first inductor 121 of the first electronic control component 1, and the second inductor 221 of the second electronic control component 2 are suitable for boosting and charging the power supply 200.

[0139] Specifically, electrical energy flows out from the positive electrode of the first power supply device 301, flows into the first inductor 121 after passing through the first sub-switch 633, then flows into the positive electrode of the power supply 200 after passing through the upper arm of the first bridge arm 111, then flows out from the negative electrode of the power supply 200, passes through the lower arm of the second bridge arm 211, flows into the second inductor 221, and finally flows back to the negative electrode of the first power supply device 301 after passing through the third sub-switch 643. In this step, the first power supply device 301, the first inductor 121, and the second inductor 221 simultaneously boost and charge the power supply 200. For the charging circuit 100 described in the present application, when the lower arm of the first bridge arm 111 is mis-conducted during the second step, the current will flow into the lower arm of the second bridge arm 211. Compared with the prior art, it will not directly flow back to the negative electrode of the first power supply device 301, causing a short circuit between the positive and negative electrodes of the first power supply device 301 and posing a safety hazard.

[0140] In the above boost charging and direct connection charging processes, the motor inductance is reused or an inductive element is separately provided to reduce the charging gate current ripple and improve the charging stability, so that during the boost charging and direct connection charging processes, the ripple is reduced and the stability is higher.

[0141] In a third aspect, the present application provides a drive system 400, including a power supply 200 and a charging circuit 100 according to any one of claims 1 to 18.

[0142] In some embodiments, the drive system 400 is an electric drive assembly of a new energy vehicle, and the power supply 200 is a power battery pack. The power battery pack is charged by connecting the charging circuit 100 to an external power supply device 300 of the vehicle.

[0143] In a fourth aspect, as Figure 7 shown, the present application provides a vehicle 1000, characterized by including the charging circuit 100 or the drive system 400 provided in any of the above embodiments.

[0144] In some embodiments, the vehicle 1000 is a new energy vehicle, and specifically may include but is not limited to: a pure electric vehicle, a hybrid vehicle, and an extended-range vehicle. When it includes the above drive system 400, the drive system 400 is connected to the power supply device 300 to charge the power battery of the drive system 400. When it includes the charging circuit 100, it can be used as a transfer device between the power supply device 300 and the device to be charged (vehicle, energy storage device or other electrical equipment), and controls and regulates the charging of the device to be charged by the power supply device 300. In this embodiment, the power source of the vehicle 1000 including the charging circuit 100 can be an engine, a hybrid drive assembly, or an electric drive assembly, as long as the power supply 200 described in the present application is not included therein.

[0145] In a fifth aspect, as Figure 8As shown in the figure, the present application provides an electronic device, characterized in that the electronic device includes: a processor and a memory for storing instructions executable by the processor; wherein, the processor is configured to: execute the steps of the above-mentioned control method of the charging circuit.

[0146] For example, when the processor of the electronic device executes the computer program stored in the memory, the above-mentioned pre-charging, direct connection charging, and boost charging methods can be implemented.

[0147] In some embodiments, the processor may be composed of at least one general-purpose processor, such as a central processing unit (CPU), or a combination of a CPU and a hardware chip. The processor is used to execute various types of digital storage instructions. The processor can implement the above-mentioned charging method by executing corresponding instructions.

[0148] In some embodiments, the memory may be a volatile memory, such as a random access memory, a dynamic random access memory, a static random access memory, a synchronous dynamic random access memory, etc., and the memory may also include a combination of the above types.

[0149] In a sixth aspect, the present application provides a computer-readable storage medium, characterized in that a computer instruction is stored on the computer-readable storage medium, and when the computer instruction runs on a processor, the processor executes the above-mentioned control method of the charging circuit.

[0150] Wherein, the processor is the processor in the electronic device in the above-mentioned embodiment. The readable storage medium includes computer-readable storage media, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disc, etc.

[0151] In a seventh aspect, the present application provides a computer program product, characterized in that the computer program product includes a computer program, and when the computer program runs on a computer, the computer executes the above-mentioned control method of the charging circuit.

[0152] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0153] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A charging circuit, characterized in that, Comprising: A first electronic control component (1) and a second electronic control component (2); The first end of the first electronic control component (1) is adapted to be connected to the positive pole of the power supply (200), and the second end of the first electronic control component (1) is adapted to be connected to the negative pole of the power supply (200); The first end of the second electronic control component (2) is adapted to be connected to the positive pole of the power supply (200), and the second end of the second electronic control component (2) is adapted to be connected to the negative pole of the power supply (200); The third end of the first electronic control component (1) is adapted to be connected to the positive pole of the power supply device (300); the third end of the second electronic control component (2) is adapted to be connected to the negative pole of the power supply device (300).

2. The charging circuit (100) according to claim 1, characterized in that, The power supply device (300) includes a first power supply device (301) and a second power supply device (302); The third end of the first electronic control component (1) is adapted to be connected to the positive poles of the first power supply device (301) and the second power supply device (302); the third end of the second electronic control component (2) is adapted to be connected to the negative poles of the first power supply device (301) and the second power supply device (302).

3. The charging circuit (100) according to claim 1, characterized in that The first electronic control component (1) includes: A first inverter circuit (11), the first end of the first inverter circuit (11) is adapted to be connected to the positive pole of the power supply (200), and the second end of the first inverter circuit (11) is adapted to be connected to the negative pole of the power supply (200); A first load (12), the first end of the first load (12) is connected to the midpoint of the first inverter circuit (11), and the second end of the first load (12) is adapted to be connected to the positive pole of the power supply device (300); The second electronic control component (2) includes: A second inverter circuit (21), the first end of the second inverter circuit (21) is adapted to be connected to the positive pole of the power supply (200), and the second end of the second inverter circuit (21) is adapted to be connected to the negative pole of the power supply (200); A second load (22), the first end of the second load (22) is connected to the midpoint of the second inverter circuit (21), and the second end of the second load (22) is adapted to be connected to the negative pole of the power supply device (300).

4. The charging circuit (100) according to claim 3, wherein The power supply device (300) includes a first power supply device (301) and a second power supply device (302); the second end of the first load (12) is adapted to be connected to the positive pole of the first power supply device (301), and / or, the second end of the first load (12) is adapted to be connected to the positive pole of the second power supply device (302); The second end of the second load (22) is adapted to be connected to the negative pole of the first power supply device (301), and / or, the second end of the second load (22) is adapted to be connected to the negative pole of the second power supply device (302).

5. The charging circuit (100) according to claim 3, wherein The first inverter circuit (11) includes: a first bridge arm (111); the first load (12) includes: a first inductor (121); The first end of the first inductor (121) is connected between the upper bridge arm and the lower bridge arm of the first bridge arm (111), the first end of the first inductor (121) is the first end of the first load (12), and the middle point of the first inverter circuit (11) is between the upper bridge arm and the lower bridge arm of the first bridge arm (111); The upper bridge arm of the first bridge arm (111) is suitable for being connected to the positive electrode of the power supply (200); and the lower bridge arm of the first bridge arm (111) is suitable for being connected to the negative electrode of the power supply (200).

6. The charging circuit (100) according to claim 5, characterized in that, The first bridge arm (111) comprises: a first sub-bridge arm (1111), a second sub-bridge arm (1112) and a third sub-bridge arm (1113); The upper bridge arm of the first sub-bridge arm (1111) is suitable for being connected to the positive electrode of the power supply (200); and the lower bridge arm of the first sub-bridge arm (1111) is suitable for being connected to the negative electrode of the power supply (200); The upper bridge arm of the second sub-bridge arm (1112) is suitable for being connected to the positive electrode of the power supply (200); and the lower bridge arm of the second sub-bridge arm (1112) is suitable for being connected to the negative electrode of the power supply (200); The upper bridge arm of the third sub-bridge arm (1113) is suitable for being connected to the positive electrode of the power supply (200); and the lower bridge arm of the third sub-bridge arm (1113) is suitable for being connected to the negative electrode of the power supply (200).

7. The charging circuit (100) according to claim 6, characterized in that, The first inductor (121) includes: a first sub-inductor (1211), a second sub-inductor (1212) and a third sub-inductor (1213); The first end of the first sub-inductor (1211) is connected between the upper bridge arm and the lower bridge arm of the first sub-bridge arm (1111); the first end of the second sub-inductor (1212) is connected between the upper bridge arm and the lower bridge arm of the second sub-bridge arm (1112); and the first end of the third sub-inductor (1213) is connected between the upper bridge arm and the lower bridge arm of the third sub-bridge arm (1113). The second end of the first sub-inductor (1211), the second end of the second sub-inductor (1212), and the second end of the third sub-inductor (1213) are connected together.

8. The charging circuit (100) according to claim 3, characterized in that, The second inverter circuit (21) includes: a second bridge arm (211); the second load (22) includes: a second inductor (221); The first end of the second inductor (221) is connected between the upper bridge arm and the lower bridge arm of the second bridge arm (211), the first end of the second inductor (221) is the first end of the second load (22), and the middle point of the second inverter circuit (21) is between the upper bridge arm and the lower bridge arm of the second bridge arm (211); The upper bridge arm of the second bridge arm (211) is suitable for being connected to the positive electrode of the power supply (200); and the lower bridge arm of the second bridge arm (211) is suitable for being connected to the negative electrode of the power supply (200).

9. The charging circuit (100) according to claim 8, characterized in that The second bridge arm (211) comprises: a fourth sub-bridge arm (2111), a fifth sub-bridge arm (2112) and a sixth sub-bridge arm (2113); The upper bridge arm of the fourth sub-bridge arm (2111) is suitable for being connected to the positive electrode of the power supply (200); the lower bridge arm of the fourth sub-bridge arm (2111) is suitable for being connected to the negative electrode of the power supply (200); The upper bridge arm of the fifth sub-bridge arm (2112) is suitable for being connected to the positive electrode of the power supply (200); the lower bridge arm of the fifth sub-bridge arm (2112) is suitable for being connected to the negative electrode of the power supply (200); The upper bridge arm of the sixth sub-bridge arm (2113) is suitable for being connected to the positive electrode of the power supply (200); and the lower bridge arm of the sixth sub-bridge arm (2113) is suitable for being connected to the negative electrode of the power supply (200).

10. The charging circuit (100) according to claim 9, characterized in that The second inductor (221) includes: a fourth sub-inductor (2211), a fifth sub-inductor (2212) and a sixth sub-inductor (2213); The first end of the fourth sub-inductor (2211) is connected between the upper bridge arm and the lower bridge arm of the fourth sub-bridge arm (2111); the first end of the fifth sub-inductor (2212) is connected between the upper bridge arm and the lower bridge arm of the fifth sub-bridge arm (2112); and the first end of the sixth sub-inductor (2213) is connected between the upper bridge arm and the lower bridge arm of the sixth sub-bridge arm (2113). The second end of the fourth sub-inductor (2211), the second end of the fifth sub-inductor (2212), and the second end of the sixth sub-inductor (2213) are connected together.

11. The charging circuit (100) according to claim 1, wherein, The charging circuit (100) further comprises: a first pre-charging element (51), wherein a first end of the first pre-charging element (51) is adapted to be connected to the positive electrode of the power source (200), and a second end of the first pre-charging element (51) is adapted to be connected to the negative electrode of the power source (200).

12. The charging circuit (100) according to claim 2, characterized in that, The charging circuit (100) further comprises: a second pre-charging element (52), wherein a first end of the second pre-charging element (52) is connected to a third end of the first electronic control component (1), and a second end of the second pre-charging element (52) is connected to a third end of the second electronic control component (2).

13. The charging circuit (100) according to claim 12, characterized in that, The charging circuit (100) further comprises: a seventh switch (67), wherein a first end of the seventh switch (67) is connected to a third end of the first electronic control component (1) or a third end of the second electronic control component (2), and a second end of the seventh switch (67) is connected to the second pre-charging element (52).

14. The charging circuit (100) according to claim 1, characterized in that, The charging circuit (100) further includes a first switch (61) and a second switch (62); The first end of the first switch (61) is suitable for being connected to the positive electrode of the power supply (200), the second end of the first switch (61) is connected to the first end of the first electronic control component (1), and / or the second end of the first switch (61) is connected to the first end of the second electronic control component (2); The first end of the second switch (62) is suitable for being connected to the negative pole of the power supply (200), the second end of the second switch (62) is connected to the second end of the first electronic control component (1), and / or the second end of the second switch (62) is connected to the second end of the second electronic control component (2).

15. The charging circuit (100) according to claim 12, characterized in that, The charging circuit (100) further includes a third switch (63). A first end of the third switch (63) is connected to a third end of the first electronic control component (1), and a second end of the third switch (63) is adapted to be connected to a positive electrode of the power supply device (300).

16. The charging circuit (100) according to claim 15, characterized in that The third switch (63) includes a first sub-switch (633) and a second sub-switch (634). A first end of the first sub-switch (633) is connected to the third end of the first electronic control component (1), and a second end of the first sub-switch (633) is connected to the second pre-charging element (52); A first end of the second sub-switch (634) is connected to the third end of the first electronic control component (1), and a second end of the second sub-switch (634) is connected to a positive electrode of the second power supply device (302).

17. The charging circuit (100) according to claim 2, characterized in that, The charging circuit (100) further includes a fourth switch (64). A first end of the fourth switch (64) is connected to a third end of the second electronic control component (2), and a second end of the fourth switch (64) is adapted to be connected to a negative electrode of the power supply device (300).

18. The charging circuit (100) according to claim 17, wherein, The fourth switch (64) includes a third sub-switch (643) and a fourth sub-switch (644). A first end of the third sub-switch (643) is connected to the third end of the second electronic control component (2), and a second end of the third sub-switch (643) is connected to a negative electrode of the first power supply device (301); A first end of the fourth sub-switch (644) is connected to the third end of the second electronic control component (2), and a second end of the fourth sub-switch (644) is connected to a negative electrode of the second power supply device (302).

19. A control method for a charging circuit, characterized in that, Applied to the charging circuit (100) according to any one of claims 1 to 18; characterized in that when the first switch (61), the second switch (62), the third switch (63), the fourth switch (64), an upper bridge arm of the first electronic control component (1) and a lower bridge arm of the second electronic control component (2) are in a closed state, the power supply device (300) is adapted to directly charge the power supply (200).

20. The method for controlling a charging circuit according to claim 19, wherein: When the third switch (63), the lower bridge arm of the first electronic control component (1), the lower bridge arm of the second electronic control component (2) and the fourth switch (64) are in a closed state, the power supply device (300) charges a first inductor (121) of the first electronic control component (1) and a second inductor (221) of the second electronic control component (2).

21. A control method for a charging circuit according to claim 19, characterized in that When the third switch (63), the upper bridge arm of the first electronic control component (1), the first switch (61), the second switch (62), the lower bridge arm of the second electronic control component (2) and the fourth switch (64) are in a closed state, the power supply device (300), the first inductor (121) of the first electronic control component (1) and the second inductor (221) of the second electronic control component (2) are adapted to boost-charge the power supply (200).

22. A drive system, characterized in that, Including a power supply (200) and the charging circuit (100) according to any one of claims 1 to 18.

23. A vehicle, characterized in that, The method comprises the charging circuit (100) according to any one of claims 1 to 18; or the driving system (400) according to claim 22.

24. An electronic device, characterized in that, The electronic device includes: a processor and a memory for storing processor-executable instructions; wherein the processor is configured to: execute the steps of the charging circuit control method according to any one of claims 19 to 21.

25. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions. When the computer instructions are executed on a processor, the processor executes the method for controlling a charging circuit according to any one of claims 19 to 21.

26. A computer program product, characterized in that, The computer program product includes a computer program, and when the computer program is run on a computer, the computer is caused to execute the control method of the charging circuit according to any one of claims 19 to 21.

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