Controller circuit, vehicle-mounted control circuit and vehicle

Abstract

The utility model provides a controller circuit, a vehicle-mounted control circuit and a vehicle, the controller circuit comprises a three-phase control circuit, the three-phase control circuit comprises a first phase control circuit, a second phase control circuit and a third phase control circuit, the first phase control circuit, the second phase control circuit and the third phase control circuit comprise two bridge arm groups connected in parallel, and the two bridge arm groups are connected between the positive electrode and the negative electrode of the direct-current bus and are used for forming a charging circuit for charging a battery or forming a control circuit for controlling operation of a motor; according to the utility model, under the condition of not increasing extra components of a controller circuit or changing performance indexes of a motor, through time division multiplexing of a topology circuit of the controller, integration of the OBC and the motor controller is realized, a battery charging mode and a motor driving mode are automatically switched, and the switching of the two modes is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a controller circuit, an on-vehicle control circuit and a vehicle. Background Art

[0002] In the related art, components such as an on-board charger (OBC) and a controller are combined in a physical integration manner. Even when the OBC and the controller are reused, only some functional devices in the controller can be reused, and additional devices such as power switching tubes are required to achieve the reuse function. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, an object of the utility model is to provide a controller circuit which, without adding extra components to the controller circuit or changing the motor performance index, realizes the integration of the OBC and the motor controller by time-sharing multiplexing of the topology circuit of the controller, autonomously switches between the battery charging mode and the motor driving mode, and the switching between the two modes is simple and convenient.

[0005] To this end, a second object of the utility model is to provide an on-vehicle control circuit.

[0006] To this end, a third object of the utility model is to provide a vehicle.

[0007] To achieve the above object, an embodiment of the first aspect of the utility model provides a controller circuit, the controller circuit comprising: a three-phase control circuit, the three-phase control circuit comprising: a first-phase control circuit, a second-phase control circuit and a third-phase control circuit, the first-phase control circuit, the second-phase control circuit and the third-phase control circuit comprising: two bridge arm groups connected in parallel, the two bridge arm groups being connected between the positive and negative poles of a DC bus for forming a charging circuit for charging a battery or a control circuit for controlling the operation of a motor.

[0008] According to the controller circuit of the embodiment of the present utility model, by grouping the arms in the first-phase control circuit, the second-phase control circuit, and the third-phase control circuit of the three-phase control circuit and setting them as two arm groups connected in parallel, time-division multiplexing is performed on the arm groups according to different modes of the controller. In the charging mode, multiple arm groups in the three-phase control circuit form a charging circuit for battery charging, or in the driving mode, the three-phase control circuit forms a control circuit for controlling the operation of the motor. Without adding additional components to the controller circuit or changing the performance indicators of the motor, by performing time-division multiplexing on the topology circuit of the controller, the integration of the OBC and the motor controller is realized, the modes of battery charging and motor driving are autonomously switched, and the switching between the two modes is simple and convenient.

[0009] In some embodiments, the motor includes a first motor, and the first-phase control circuit includes: a first arm group, the first end of the first arm group is connected to the positive electrode, and the second end of the first arm group is connected to the negative electrode; a second arm group, the first end of the second arm group is connected to the positive electrode, and the second end of the first arm group is connected to the negative electrode; a first contact switch, one end of the first contact switch is connected to the midpoint of the first arm of the first arm group, and the other end of the first contact switch is connected to the first-phase connection terminal of the first motor; a second contact switch, one end of the second contact switch is connected to the midpoint of the second arm of the second arm group, and the other end of the second contact switch is connected to the first-phase connection terminal of the first motor.

[0010] In some embodiments, the first-phase control circuit further includes: a first switch, the first switch is connected to the upper arm of the first arm group and is used to control the conduction or cutoff of the control wafer in the first arm group; a second switch, the second switch is connected to the lower arm of the first arm group and is used to control the conduction or cutoff of the control wafer in the first arm group; a third switch, the third switch is connected to the upper arm of the second arm group and is used to control the conduction or cutoff of the control wafer in the second arm group; a fourth switch, the fourth switch is connected to the lower arm of the second arm group and is used to control the conduction or cutoff of the control wafer in the second arm group.

[0011] In some embodiments, the second-phase control circuit includes: a third bridge arm group, a first end of the third bridge arm group is connected to the positive electrode, and a second end of the third bridge arm group is connected to the negative electrode; a fourth bridge arm group, a first end of the fourth bridge arm group is connected to the positive electrode, and a second end of the fourth bridge arm group is connected to the negative electrode; a third contact switch, one end of the third contact switch is connected to the midpoint of the third bridge arm of the third bridge arm group, and the other end of the third contact switch is connected to the second-phase connection terminal of the first motor; a fourth contact switch, one end of the fourth contact switch is connected to the midpoint of the third bridge arm of the fourth bridge arm group, and the other end of the fourth contact switch is connected to the second-phase connection terminal of the first motor.

[0012] In some embodiments, the second-phase control circuit further includes: a fifth switch, the fifth switch is connected to the upper bridge arm of the third bridge arm group and is used to control the conduction or cutoff of the control wafer in the third bridge arm group; a sixth switch, the sixth switch is connected to the lower bridge arm of the third bridge arm group and is used to control the conduction or cutoff of the control wafer in the third bridge arm group; a seventh switch, the seventh switch is connected to the upper bridge arm of the fourth bridge arm group and is used to control the conduction or cutoff of the control wafer in the fourth bridge arm group; an eighth switch, the eighth switch is connected to the lower bridge arm of the fourth bridge arm group and is used to control the conduction or cutoff of the control wafer in the fourth bridge arm group.

[0013] In some embodiments, the third-phase control circuit includes: a fifth bridge arm group, a first end of the fifth bridge arm group is connected to the positive electrode, and a second end of the fifth bridge arm group is connected to the negative electrode; a sixth bridge arm group, a first end of the sixth bridge arm group is connected to the positive electrode, and a second end of the sixth bridge arm group is connected to the negative electrode; a fifth contact switch, one end of the fifth contact switch is connected to the midpoint of the fifth bridge arm of the fifth bridge arm group, and the other end of the fifth contact switch is connected to the third-phase connection terminal of the first motor; a sixth contact switch, one end of the sixth contact switch is connected to the midpoint of the sixth bridge arm of the sixth bridge arm group, and the other end of the sixth contact switch is connected to the third-phase connection terminal of the first motor.

[0014] In some embodiments, the third-phase control circuit further includes: a ninth switch, the ninth switch is connected to the upper bridge arm of the fifth bridge arm group and is used to control the conduction or cutoff of the control wafer in the fifth bridge arm group; a tenth switch, the tenth switch is connected to the lower bridge arm of the fifth bridge arm group and is used to control the conduction or cutoff of the control wafer in the fifth bridge arm group; an eleventh switch, the eleventh switch is connected to the upper bridge arm of the sixth bridge arm group and is used to control the conduction or cutoff of the control wafer in the sixth bridge arm group; a twelfth switch, the twelfth switch is connected to the lower bridge arm of the sixth bridge arm group and is used to control the conduction or cutoff of the control wafer in the sixth bridge arm group.

[0015] In some embodiments, the three-phase control circuit further includes: a seventh contact switch, one end of the seventh contact switch is connected to the positive electrode; an eighth contact switch, one end of the eighth contact switch is connected to the other end of the seventh contact switch, and the other end of the eighth contact switch is connected to the negative electrode.

[0016] In some embodiments, the controller circuit further includes: a first transformer, the primary winding of the first transformer is connected to an AC power supply, and the secondary winding of the first transformer is connected to the midpoint of the fifth bridge arm and the midpoint of the sixth bridge arm of the third-phase control circuit.

[0017] In some embodiments, the controller circuit further includes: a first capacitor, the first capacitor is connected in parallel with the three-phase control circuit.

[0018] In some embodiments, the third-phase control circuit includes: a fifth bridge arm group, the first end of the fifth bridge arm group is connected to the positive electrode, and the second end of the fifth bridge arm group is connected to the negative electrode; a sixth bridge arm group, the first end of the sixth bridge arm group is connected to the positive electrode, and the second end of the sixth bridge arm group is connected to the negative electrode. The midpoint of the sixth bridge arm of the sixth bridge arm group is respectively connected to the midpoint of the fifth bridge arm of the fifth bridge arm group and the third-phase connection terminal of the first motor.

[0019] In some embodiments, the controller circuit further includes: a fourth-phase control circuit, a fifth-phase control circuit, and a sixth-phase control circuit.

[0020] In some embodiments, the motor includes a second motor. The fourth-phase control circuit includes: a seventh bridge arm group, the first end of the seventh bridge arm group is connected to the positive electrode, the second end of the seventh bridge arm group is connected to the negative electrode, and the midpoint of the seventh bridge arm of the seventh bridge arm group is connected to the first-phase connection terminal of the second motor; an eighth bridge arm group, the first end of the eighth bridge arm group is connected to the positive electrode, the second end of the eighth bridge arm group is connected to the negative electrode, and the midpoint of the eighth bridge arm of the eighth bridge arm group is connected to the midpoint of the seventh bridge arm.

[0021] In some embodiments, the fifth-phase control circuit includes: a ninth bridge arm group, the first end of the ninth bridge arm group is connected to the positive electrode, and the second end of the ninth bridge arm group is connected to the negative electrode; a tenth bridge arm group, the first end of the tenth bridge arm group is connected to the positive electrode, and the second end of the tenth bridge arm group is connected to the negative electrode; a ninth contact switch, one end of the ninth contact switch is connected to the midpoint of the ninth bridge arm of the ninth bridge arm group, and the other end of the ninth contact switch is connected to the second-phase connection terminal of the second motor; a tenth contact switch, one end of the tenth contact switch is connected to the midpoint of the tenth bridge arm of the tenth bridge arm group, and the other end of the tenth contact switch is connected to the second-phase connection terminal of the second motor.

[0022] In some embodiments, the sixth-phase control circuit includes: an eleventh arm group, the first end of the eleventh arm group is connected to the positive electrode, and the second end of the eleventh arm group is connected to the negative electrode; a twelfth arm group, the first end of the twelfth arm group is connected to the positive electrode, and the second end of the twelfth arm group is connected to the negative electrode; an eleventh contact switch, one end of the eleventh contact switch is connected to the midpoint of the eleventh arm of the eleventh arm group, and the other end of the eleventh contact switch is connected to the third-phase connection terminal of the second motor; a twelfth contact switch, one end of the twelfth contact switch is connected to the midpoint of the twelfth arm of the twelfth arm group, and the other end of the twelfth contact switch is connected to the third-phase connection terminal of the second motor.

[0023] In some embodiments, the controller circuit further includes: a second transformer, the primary winding of the second transformer is connected to the midpoint of the ninth arm and the midpoint of the tenth arm, and the secondary winding of the second transformer is connected to the midpoint of the eleventh arm and the midpoint of the twelfth arm.

[0024] In some embodiments, the controller circuit further includes: a second capacitor, the second capacitor is connected in parallel with the sixth-phase control circuit.

[0025] In some embodiments, one end of the battery is connected to one end of the first capacitor, and the other end of the battery is connected to the other end of the first capacitor.

[0026] In some embodiments, the arm group includes: at least two control wafers.

[0027] To achieve the above object, an embodiment of the second aspect of the present invention provides a vehicle-mounted control circuit, the vehicle-mounted control circuit includes: a motor; the controller circuit described in the above embodiment, connected to the motor for driving the motor.

[0028] According to the vehicle-mounted control circuit of the embodiment of the present invention, by grouping the arms in the first-phase control circuit, the second-phase control circuit, and the third-phase control circuit of the three-phase control circuit and setting them as two arm groups connected in parallel, and time-division multiplexing the arm groups according to different modes of the controller. In the charging mode, multiple arm groups in the three-phase control circuit form a charging circuit for charging the battery, or in the driving mode, the three-phase control circuit forms a control circuit for controlling the operation of the motor. Without adding additional components to the controller circuit or changing the performance indicators of the motor, by time-division multiplexing the topological circuit of the controller, the integration of the OBC and the motor controller is realized, and the modes of battery charging and motor driving are autonomously switched, and the switching between the two modes is simple and convenient.

[0029] To achieve the above object, an embodiment of the third aspect of the present utility model provides a vehicle, which includes the in-vehicle control circuit described in the above embodiment.

[0030] For the vehicle according to the embodiment of the present utility model, by grouping the arms in the first-phase control circuit, the second-phase control circuit, and the third-phase control circuit of the three-phase control circuit and setting them as two parallel-connected arm groups, and multiplexing the arm groups time-divisionally according to different modes of the controller. In the charging mode, multiple arm groups in the three-phase control circuit form a charging circuit for charging the battery, or in the driving mode, the three-phase control circuit forms a control circuit for controlling the operation of the motor. Without adding extra components to the controller circuit or changing the performance indicators of the motor, by time-divisionally multiplexing the topology circuit of the controller, the integration of the OBC and the motor controller is realized, and the modes of battery charging and motor driving are autonomously switched, and the switching between the two modes is simple and convenient.

[0031] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0032] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0033] Figure 1 is a schematic diagram of a controller circuit in the related art;

[0034] Figure 2 is a schematic diagram of a controller circuit according to an embodiment of the present utility model;

[0035] Figure 3 is a schematic diagram of a controller circuit according to an embodiment of the present utility model;

[0036] Figure 4 is a topology diagram of a controller circuit according to an embodiment of the present utility model;

[0037] Figure 5 is a topology diagram of a controller circuit according to another embodiment of the present utility model;

[0038] Figure 6 is a schematic diagram of a dual controller circuit according to an embodiment of the present utility model;

[0039] Figure 7 is a schematic diagram of a dual controller circuit according to another embodiment of the present utility model.

[0040] Reference Signs:

[0041] Controller Circuit 10;

[0042] The first-phase control circuit 1; the second-phase control circuit 2; the third-phase control circuit 3;

[0043] The fourth-phase control circuit 4; the fifth-phase control circuit 5; the sixth-phase control circuit 6;

[0044] The first bridge arm group 11; the second bridge arm group 12; the third bridge arm group 21; the fourth bridge arm group 22; the fifth bridge arm group 31; the sixth bridge arm group 32; the seventh bridge arm group 41; the eighth bridge arm group 42; the ninth bridge arm group 51; the tenth bridge arm group 52; the eleventh bridge arm group 61; the twelfth bridge arm group 62;

[0045] The first switch G21; the second switch G22; the third switch G23; the fourth switch G24;

[0046] The fifth switch G25; the sixth switch G26; the seventh switch G27; the eighth switch G28;

[0047] The ninth switch G29; the tenth switch G210; the eleventh switch G211; the twelfth switch G212;

[0048] The first contact switch K1; the second contact switch K2; the third contact switch K3; the fourth contact switch K4; the fifth contact switch K5; the sixth contact switch K6; the seventh contact switch K7; the eighth contact switch K8; the ninth contact switch K9; the tenth contact switch K10; the eleventh contact switch K11; the twelfth contact switch K12;

[0049] The first transformer T1; the second transformer T2;

[0050] The first capacitor C1; the second capacitor C2;

[0051] The first motor M1; the second motor M2. Detailed implementation manners

[0052] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown herein can be arranged and designed in various different configurations.

[0053] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0054] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0055] The OBC is a device for charging the battery of an electric vehicle. Currently, the OBC is divided into a two-stage topology circuit, including an alternating current-direct current (AC-DC) converter and a DC-DC converter. Among them, the AC-DC converter realizes power factor correction (PFC), and the DC-DC converter realizes electrical isolation and output voltage regulation. It has the disadvantages of many devices, high cost, complex control, and low conversion efficiency.

[0056] In the related art, as Figure 1 shown, the vehicle-mounted control circuit includes a controller (the dotted part in the figure) and a motor. Among them, P and N represent the power connection terminals of the controller. P represents the positive power connection, and N represents the negative power connection. The controller circuit includes three-phase control circuits connected in parallel. Each three-phase control circuit is connected to the positive power connection P and the negative power connection N; each three-phase control circuit has 4 arms, and each arm is composed of 2 control wafers. Among them, control wafer Q1 and control wafer Q2 form an arm, and control wafer Q3 and Q4 form an arm, and so on for the other three-phase control circuits; in addition, each three-phase control circuit also includes 2 switches. Taking the first three-phase control circuit as an example, switch G11 simultaneously controls the conduction or cutoff of control wafers Q1, Q3, Q5, and Q7, and switch G12 simultaneously controls the conduction or cutoff of control wafers Q2, Q4, Q6, and Q8. The switch control in the other three-phase control circuits is the same as that in the first three-phase control circuit.

[0057] The motor is a three-phase motor, and its three-phase connection terminals, namely the U terminal, V terminal, and W terminal, are respectively connected to each control wafer in the three-phase control circuit.

[0058] Next, refer to Figures 2 - 5 Describe the controller circuit 10 according to an embodiment of the present invention.

[0059] The controller circuit 10 according to an embodiment of the present invention includes: a three-phase control circuit, wherein the three-phase control circuit includes: a first-phase control circuit 1, a second-phase control circuit 2, and a third-phase control circuit 3. The first-phase control circuit 1, the second-phase control circuit 2, and the third-phase control circuit 3 each include: two bridge arm groups connected in parallel, and the two bridge arm groups are connected between the positive pole P and the negative pole N of the DC bus, and are used to form a charging circuit for charging the battery, or a control circuit for controlling the operation of the motor.

[0060] In the embodiment, the bridge arms of each phase control circuit of the three-phase control circuit in the controller circuit 10, namely the first-phase control circuit 1, the second-phase control circuit 2, and the third-phase control circuit 3, are re-paralleled to form two bridge arm groups connected in parallel, and the bridge arm groups are time-division multiplexed according to different modes of the controller. The controller has two modes, namely a charging mode and a driving mode. In the charging mode, multiple bridge arm groups in the three-phase control circuit form a primary circuit and a secondary circuit, and the above circuits are determined as a charging circuit. At this time, the controller is equivalent to a single-stage OBC. When the externally connected AC power supply passes through the charging circuit, the function of charging the battery can be realized, and the double-stage OBC in the prior art is changed to a single-stage OBC, improving the overall efficiency and the power density of the converter; in the driving mode, there is no externally input AC power supply, and the transformer does not work either. At this time, the topology diagram of the controller circuit 10 is similar to Figure 1 the topology diagram structure of the controller circuit 10 shown. The three-phase control circuit is correspondingly connected to the three-phase connection terminals of the motor to realize the function of driving the motor. By multiplexing the bridge arms of the OBC and the motor controller, the bridge arm of the AC-DC converter of the OBC is omitted, and the integration of the OBC and the motor controller is realized.

[0061] According to the controller circuit 10 of the embodiment of the present utility model, by grouping the bridge arms in the first-phase control circuit 1, the second-phase control circuit 2, and the third-phase control circuit 3 of the three-phase control circuit and setting them as two bridge arm groups connected in parallel, time-division multiplexing is performed on the bridge arm groups according to different modes of the controller. In the charging mode, multiple bridge arm groups in the three-phase control circuit form a charging circuit for battery charging, or in the driving mode, the three-phase control circuit forms a control circuit for controlling the operation of the motor. Without adding additional components to the controller circuit 10 or changing the motor performance indicators, by performing time-division multiplexing on the topology circuit of the controller, the integration of the OBC and the motor controller is realized, and the modes of battery charging and motor driving are autonomously switched, and the switching between the two modes is simple and convenient.

[0062] In some embodiments, as Figures 2 - 5 shown, taking the motor including the first motor M1 as an example for specific illustration, the first-phase control circuit 1 includes: a first bridge arm group 11, a second bridge arm group 12, a first contact switch K1, and a second contact switch K2. Among them, the U terminal of the first-phase connection terminal of the first motor M1 is divided into a U21 line and a U22 line.

[0063] As Figure 4 and Figure 5 shown, the first end of the first bridge arm group 11 is connected to the positive pole P, and the second end of the first bridge arm group 11 is connected to the negative pole N; the first end of the second bridge arm group 12 is connected to the positive pole P, and the second end of the first bridge arm group 11 is connected to the negative pole N, which is used to form a charging circuit for the first-phase control circuit 1 to charge the battery; one end of the first contact switch K1 is connected to the midpoint of the first bridge arm of the first bridge arm group 11, and the other end of the first contact switch K1 is connected to the U22 line of the U terminal of the first-phase connection terminal of the first motor M1; one end of the second contact switch K2 is connected to the midpoint of the second bridge arm of the second bridge arm group 12, and the other end of the second contact switch K2 is connected to the U21 line of the U terminal of the first-phase connection terminal of the first motor M1, which is used to conduct or cut off the control circuit between the first-phase control circuit 1 and the motor.

[0064] In some embodiments, as Figure 4 and Figure 5 shown, the first-phase control circuit 1 further includes: a first switch G21, a second switch G22, a third switch G23, and a fourth switch G24, among which,

[0065] The first switch G21 is connected to the upper bridge arm of the first bridge arm group 11, and is used to control the control wafer in the first bridge arm group 11 to be turned on or off; the second switch G22 is connected to the lower bridge arm of the first bridge arm group 11, and is used to control the control wafer in the first bridge arm group 11 to be turned on or off; the third switch G23 is connected to the upper bridge arm of the second bridge arm group 12, and is used to control the control wafer in the second bridge arm group 12 to be turned on or off; the fourth switch G24 is connected to the lower bridge arm of the second bridge arm group 12, and is used to control the control wafer in the second bridge arm group 12 to be turned on or off.

[0066] In the embodiment, in the charging mode, the number of wafers controlled by each switch in the first phase control circuit 1 can be adjusted according to different power conditions of the OBC, such as Figure 4 As shown, the first switch G21 controls the control wafers Q1 and Q3 in the first bridge arm group 11 to be turned on or off, the second switch G22 controls the control wafers Q2 and Q4 in the first bridge arm group 11 to be turned on or off, the third switch G23 controls the control wafers Q5 and Q7 in the second bridge arm group 12 to be turned on or off, and the fourth switch G24 controls the control wafers Q6 and Q8 in the second bridge arm group 12 to be turned on or off.

[0067] Or Figure 5 As shown, the first switch G21 controls the control wafer Q1 in the first bridge arm group 11 to be turned on or off, the second switch G22 controls the control wafer Q2 in the first bridge arm group 11 to be turned on or off, the third switch G23 controls the control wafers Q3, Q5 and Q7 in the second bridge arm group 12 to be turned on or off, and the fourth switch G24 controls the control wafers Q4, Q6 and Q8 in the second bridge arm group 12 to be turned on or off. By changing the number of control wafers in parallel according to actual conditions, each control wafer can operate at a power that meets the power requirements during the process of converting AC power into DC power, making the charging process safer.

[0068] In the driving mode, when the first switch G21 and the third switch G23 are opened and closed at the same time, the first switch G21 and the third switch G23 are equivalent to Figure 1 The switch G11 controls four control wafers at the same time; when the second switch G22 and the fourth switch G24 are opened and closed at the same time, the second switch G22 and the fourth switch G24 are equivalent to Figure 1 The switch G12 can also control the opening and closing of the four control wafers at the same time, so the first phase control circuit 1 is equivalent to Figure 1 The first three-phase control circuit in the figure is equivalent to the second phase control circuit 2. Figure 1 The second three-phase control circuit in the third phase control circuit 3 is equivalent to Figure 1 The third three-phase control circuit in the embodiment, the topology diagram of the controller circuit 10 is the same as Figure 1 The controller circuit 10 shown has a similar topological structure.

[0069] In some embodiments, as Figure 2 and Figure 3 shown, the second-phase control circuit 2 includes: a third bridge arm group 21, a fourth bridge arm group 22, a third contact switch K3, and a fourth contact switch K4. Among them, the V terminal of the three-phase connection terminal of the first motor M1 is divided into a V21 line and a V22 line.

[0070] As Figure 4 and Figure 5 shown, the first end of the third bridge arm group 21 is connected to the positive pole P, and the second end of the third bridge arm group 21 is connected to the negative pole N; the first end of the fourth bridge arm group 22 is connected to the positive pole P, and the second end of the fourth bridge arm group 22 is connected to the negative pole N, for forming a charging circuit in which the second-phase control circuit 2 charges the battery; one end of the third contact switch K3 is connected to the midpoint of the third bridge arm of the third bridge arm group 21, and the other end of the third contact switch K3 is connected to the V21 line of the V terminal of the second-phase connection terminal of the first motor M1; one end of the fourth contact switch K4 is connected to the midpoint of the third bridge arm of the fourth bridge arm group 22, and the other end of the fourth contact switch K4 is connected to the V22 line of the V terminal of the second-phase connection terminal of the first motor M1, for conducting or turning off the control circuit between the second-phase control circuit 2 and the first motor M1.

[0071] In some embodiments, as Figure 4 and Figure 5 shown, the second-phase control circuit 2 further includes: a fifth switch G25, a sixth switch G26, a seventh switch G27, and an eighth switch G28. Among them,

[0072] The fifth switch G25 is connected to the upper bridge arm of the third bridge arm group 21, for controlling the conduction or turning off of the control wafer in the third bridge arm group 21; the sixth switch G26 is connected to the lower bridge arm of the third bridge arm group 21, for controlling the conduction or turning off of the control wafer in the third bridge arm group 21; the seventh switch G27 is connected to the upper bridge arm of the fourth bridge arm group 22, for controlling the conduction or turning off of the control wafer in the fourth bridge arm group 22; the eighth switch G28 is connected to the lower bridge arm of the fourth bridge arm group 22, for controlling the conduction or turning off of the control wafer in the fourth bridge arm group 22; in the charging mode, the seventh switch G27 and the eighth switch G28 are turned off, and the bridge arms controlled by the seventh switch G27 and the eighth switch G28 do not work.

[0073] In some embodiments, as Figure 2 and Figure 3 shown, the third-phase control circuit 3 includes: a fifth bridge arm group 31, a sixth bridge arm group 32, a five-contact switch, and a sixth contact switch K6. Among them, the W line of the three-phase connection terminal of the first motor M1 is divided into a W21 line and a W22 line.

[0074] As Figure 4 and Figure 5As shown, the first end of the fifth bridge arm group 31 is connected to the positive pole P, and the second end of the fifth bridge arm group 31 is connected to the negative pole N; the first end of the sixth bridge arm group 32 is connected to the positive pole P, and the second end of the sixth bridge arm group 32 is connected to the negative pole N, for forming a charging circuit in which the third-phase control circuit 3 charges the battery; one end of the fifth contact switch K5 is connected to the midpoint of the fifth bridge arm of the fifth bridge arm group 31, and the other end of the fifth contact switch K5 is connected to the W21 line of the third-phase connection terminal W of the first motor M1; one end of the sixth contact switch K6 is connected to the midpoint of the sixth bridge arm of the sixth bridge arm group 32, and the other end of the sixth contact switch K6 is connected to the W22 line of the third-phase connection terminal W of the first motor M1, for conducting or cutting off the control circuit between the third-phase control circuit 3 and the first motor M1.

[0075] In some embodiments, as Figures 2 - 3 shown, the three-phase control circuit further includes: a seventh contact switch K7 and an eighth contact switch K8, wherein one end of the seventh contact switch K7 is connected to the positive pole P, one end of the eighth contact switch K8 is connected to the other end of the seventh contact switch K7, and the other end of the eighth contact switch K8 is connected to the negative pole N.

[0076] In an embodiment, in the charging mode, the contact switches on the three-phase connection terminals U, V, and W of the first motor M1 are all turned off, that is, the first contact switch K1, the second contact switch K2, the third contact switch K3, the fourth contact switch K4, the fifth contact switch K5, the sixth contact switch K6, the seventh contact switch K7, and the eighth contact switch K8 are turned off, and at the same time, the seventh contact switch K7 and the eighth contact switch K8 are also in the off state.

[0077] At this time, the externally input AC power supply passes through two parallel inductors on the phase line L and enters the first-phase control circuit 1 and the third-phase control circuit 3 respectively. At the same time, the AC power supply passes through the neutral line and enters the second-phase control circuit 2. Specifically, the AC power supply passes through the primary circuit composed of the first bridge arm group 11 and the second bridge arm group 12 in the first-phase control circuit 1 and the third bridge arm group 21 in the second-phase control circuit 2, then passes through the transformer, and finally passes through the secondary circuit composed of the fifth bridge arm group 31 and the sixth bridge arm group 32 in the third-phase control circuit 3 to form a charging circuit for charging the battery, thereby realizing charging the battery.

[0078] In the driving mode, there is no externally input AC power supply, and the first transformer T1 does not work and does not charge the battery. The contact switches on the three-phase connection terminals U, V, and W of the first motor M1 are all closed, that is, the first contact switch K1, the second contact switch K2, the third contact switch K3, the fourth contact switch K4, the fifth contact switch K5, the sixth contact switch K6, the seventh contact switch K7, and the eighth contact switch K8 are closed, and at the same time, the seventh contact switch K7 and the eighth contact switch K8 are also in the closed state. At this time, the topology diagram of the controller circuit 10 is the same asFigure 1 The topology of the controller circuit 10 shown is similar.

[0079] In some embodiments, such as Figure 4 and Figure 5 shown, the third-phase control circuit 3 further includes: a ninth switch G29, a tenth switch G210, an eleventh switch G211, and a twelfth switch G212, where

[0080] The ninth switch G29 is connected to the upper arm of the fifth bridge arm group 31 and is used to control the conduction or cutoff of the control wafers in the fifth bridge arm group 31; the tenth switch G210 is connected to the lower arm of the fifth bridge arm group 31 and is used to control the conduction or cutoff of the control wafers in the fifth bridge arm group 31; the eleventh switch G211 is connected to the upper arm of the sixth bridge arm group 32 and is used to control the conduction or cutoff of the control wafers in the sixth bridge arm group 32; the twelfth switch G212 is connected to the lower arm of the sixth bridge arm group 32 and is used to control the conduction or cutoff of the control wafers in the sixth bridge arm group 32.

[0081] In an embodiment, in the charging mode, according to the different power conditions of the OBC, the number of control wafers controlled by each switch in the third-phase control circuit 3 can be adjusted. For example, Figure 4 shown, the ninth switch G29 controls the conduction or cutoff of the control wafers Q17 and Q19 in the fifth bridge arm group 31, the tenth switch G210 controls the conduction or cutoff of the control wafers Q18 and Q20 in the fifth bridge arm group 31, the eleventh switch G211 controls the conduction or cutoff of the control wafers Q21 and Q23 in the sixth bridge arm group 32, and the twelfth switch G212 controls the conduction or cutoff of the control wafers Q22 and Q24 in the sixth bridge arm group 32.

[0082] Or as Figure 5 shown, the ninth switch G29 controls the conduction or cutoff of the control wafer Q17 in the fifth bridge arm group 31, the tenth switch G210 controls the conduction or cutoff of the control wafer Q18 in the fifth bridge arm group 31, the eleventh switch G211 controls the conduction or cutoff of the control wafers Q19, Q21, and Q23 in the sixth bridge arm group 32, and the twelfth switch G212 controls the conduction or cutoff of the control wafers Q20, Q22, and Q24 in the sixth bridge arm group 32. By changing the parallel number of control wafers according to the actual situation, each control wafer can work at a power that meets the power requirements during the conversion of alternating current to direct current, making the charging process safer.

[0083] In some embodiments, such as Figure 2 and Figure 3 shown, the controller circuit 10 further includes: a first transformer T1. The primary winding of the first transformer T1 is connected to the AC power supply, and the secondary winding of the first transformer T1 is connected to the midpoint of the fifth bridge arm and the midpoint of the sixth bridge arm of the third-phase control circuit 3.

[0084] In some embodiments, such as Figure 2 and Figure 3 shown, since the controller obtains a pulsed current with a very high effective value or peak value from the battery, a very high pulsed voltage will be generated on the DC support, making it difficult for the controller to bear. Therefore, the controller circuit 10 is provided with a first capacitor C1 connected in parallel with the three-phase control circuit to smooth the pulsed voltage. One end of the battery is connected to one end of the first capacitor C1, and the other end of the battery is connected to the other end of the first capacitor C1.

[0085] In some embodiments, such as Figure 6 and Figure 7 shown, the third-phase control circuit 3 includes: a fifth bridge arm group 31 and a sixth bridge arm group 32, wherein,

[0086] The first end of the fifth bridge arm group 31 is connected to the positive pole P, and the second end of the fifth bridge arm group 31 is connected to the negative pole N; the first end of the sixth bridge arm group 32 is connected to the positive pole P, the second end of the sixth bridge arm group 32 is connected to the negative pole N, and the midpoint of the sixth bridge arm of the sixth bridge arm group 32 is respectively connected to the midpoint of the fifth bridge arm of the fifth bridge arm group 31 and the third-phase connection terminal W of the first motor M1. There is no switch on the third-phase connection terminal W of the first motor M1.

[0087] In some embodiments, such as Figure 6 and Figure 7 shown, taking the motor including the second motor M2 as an example for specific description, the controller circuit 10 further includes: a fourth-phase control circuit 4, a fifth-phase control circuit 5, and a sixth-phase control circuit 6, wherein the fourth-phase control circuit 4 includes: a seventh bridge arm group 41 and an eighth bridge arm group 42, wherein,

[0088] The first end of the seventh bridge arm group 41 is connected to the positive pole P, the second end of the seventh bridge arm group 41 is connected to the negative pole N, and the midpoint of the seventh bridge arm of the seventh bridge arm group 41 is connected to the first-phase connection terminal U of the second motor M2; the first end of the eighth bridge arm group 42 is connected to the positive pole P, the second end of the eighth bridge arm group 42 is connected to the negative pole N, the midpoint of the eighth bridge arm of the eighth bridge arm group 42 is connected to the midpoint of the seventh bridge arm, and there is no switch on the first-phase connection terminal U of the second motor M2.

[0089] In some embodiments, the fifth-phase control circuit 5 includes: a ninth bridge arm group 51, a tenth bridge arm group 52, a ninth contact switch K9, and a tenth contact switch K10, wherein,

[0090] The first end of the ninth bridge arm group 51 is connected to the positive pole P, and the second end of the ninth bridge arm group 51 is connected to the negative pole N; the first end of the tenth bridge arm group 52 is connected to the positive pole P, and the second end of the tenth bridge arm group 52 is connected to the negative pole N; one end of the ninth contact switch K9 is connected to the midpoint of the ninth bridge arm of the ninth bridge arm group 51, and the other end of the ninth contact switch K9 is connected to the V terminal of the second phase connection terminal of the second motor M2; one end of the tenth contact switch K10 is connected to the midpoint of the tenth bridge arm of the tenth bridge arm group 52, and the other end of the tenth contact switch K10 is connected to the V terminal of the second phase connection terminal of the second motor M2.

[0091] In some embodiments, the sixth-phase control circuit 6 includes: an eleventh bridge arm group 61, a twelfth bridge arm group 62, an eleventh contact switch K11, and a twelfth contact switch K12, where

[0092] The first end of the eleventh bridge arm group 61 is connected to the positive pole P, and the second end of the eleventh bridge arm group 61 is connected to the negative pole N; the first end of the twelfth bridge arm group 62 is connected to the positive pole P, and the second end of the twelfth bridge arm group 62 is connected to the negative pole N; one end of the eleventh contact switch K11 is connected to the midpoint of the eleventh bridge arm of the eleventh bridge arm group 61, and the other end of the eleventh contact switch K11 is connected to the W terminal of the third phase connection terminal of the second motor M2; one end of the twelfth contact switch K12 is connected to the midpoint of the twelfth bridge arm of the twelfth bridge arm group 62, and the other end of the twelfth contact switch K12 is connected to the W terminal of the third phase connection terminal of the second motor M2.

[0093] In some embodiments, the controller circuit 10 further includes: a second transformer T2. The Y1 end of the primary winding of the second transformer T2 is connected to the midpoint of the ninth bridge arm, the Y2 end of the primary winding is connected to the midpoint of the tenth bridge arm, the Z1 end of the secondary winding of the second transformer T2 is connected to the midpoint of the eleventh bridge arm, and the Z2 end of the secondary winding is connected to the midpoint of the twelfth bridge arm.

[0094] In some embodiments, as Figure 6 and Figure 7 shown, since the controller obtains a pulsed current with a very high effective value or peak value from the battery, a very high pulsed voltage will be generated on the DC support, making it difficult for the controller to bear. Therefore, the controller circuit 10 is provided with a second capacitor C2 connected in parallel with the three-phase control circuit to smooth the pulsed voltage.

[0095] In the charging mode, the switches in the third-phase control circuit 3 and the fourth-phase control circuit 4 in the three-phase control circuit are all in the off state, and the controlled bridge arms do not work. Specifically, the externally input three-phase alternating current passes through the inductor on the phase line L1 and enters the first bridge arm group 11 of the first-phase control circuit. At the same time, it passes through the inductor on the phase line L2 and enters the second bridge arm group 12 of the first-phase control circuit. At the same time, it passes through the inductor on the phase line L3 and enters the third bridge arm group 21 of the second-phase control circuit. At the same time, it passes through the neutral line and enters the fourth bridge arm group 22 of the second-phase control circuit. The above topological circuit structure corresponds to the PFC circuit; then it passes through the ninth bridge arm group 51 and the tenth bridge arm group 52 of the fifth-phase control circuit 5, then passes through the second transformer T2, and the eleventh bridge arm group 61 and the twelfth bridge arm group 62 of the sixth-phase control circuit 6. The above topological circuit structure corresponds to the LLC circuit, realizing power supply for the battery.

[0096] In the driving mode, there is no externally input three-phase AC power supply, and the second transformer T2 does not work either and does not charge the battery. All the switches in the figure are closed. At this time, the topology of the controller circuit 10 is similar to the topology of the existing controller circuit 10.

[0097] In some embodiments, as Figure 4 and Figure 5 shown, the bridge arm group includes: at least two control wafers. In practical applications, the number of control wafers in the bridge arm group can be adjusted according to the actual situation, so that each control wafer can work at a power that meets the power requirements during the process of converting alternating current into direct current, making the charging process safer.

[0098] In an embodiment, as Figure 4 shown, taking the first-phase control circuit 1 as an example, the first-phase control circuit 1 is composed of four bridge arms. Among them, the first bridge arm group 11 includes the bridge arm composed of control wafers Q1 and Q2 and the bridge arm composed of control wafers Q3 and Q4 in parallel. The U21 line of the U terminal of the first-phase connection terminal of the first motor M1 is connected to the parallel bridge arm; the second bridge arm group 12 includes the bridge arm composed of control wafers Q5 and Q6 and the bridge arm composed of control wafers Q7 and Q8 in parallel. The U22 line of the U terminal of the first-phase connection terminal of the first motor M1 is connected to the parallel bridge arm.

[0099] Or as Figure 5 shown, the first bridge arm group 11 in the first-phase control circuit 1 includes the bridge arm composed of control wafers Q1 and Q2; the second bridge arm group 12 includes the bridge arm composed of control wafers Q3 and Q4, the bridge arm composed of control wafers Q5 and Q6, and the bridge arm composed of control wafers Q7 and Q8 in parallel. Among them, each control wafer can be composed of one transistor or composed of multiple transistors in parallel; the bridge arm composition, parallel connection method, and three-phase connection terminal wiring situation of the other three-phase control circuits are the same as those of the first-phase control circuit 1.

[0100] In the charging mode, according to different power conditions of the OBC, the number of control wafers corresponding to the switches in the three-phase control circuit can be adjusted to change the number of parallel-connected bridge arms. For example, the parallel connection mode of the bridge arms of Figure 2 is adjusted to Figure 3 so that each control wafer can work at a power that meets the power requirements during the process of converting alternating current into direct current, making the charging process safer; in the driving mode, the change in the parallel connection mode of the bridge arms caused by the change in the number of parallel connections has no impact on the driving mode, and their working principles are the same.

[0101] According to the controller circuit 10 of the embodiment of the present invention, by grouping the bridge arms in the first-phase control circuit 1, the second-phase control circuit 2, and the third-phase control circuit 3 of the three-phase control circuit and setting them as two bridge arm groups connected in parallel, time-division multiplexing is performed on the bridge arm groups according to different modes of the controller. In the charging mode, multiple bridge arm groups in the three-phase control circuit form a charging circuit for battery charging, or in the driving mode, the three-phase control circuit forms a control circuit for controlling the operation of the motor. Without adding additional components to the controller circuit 10 or changing the performance indicators of the motor, by performing time-division multiplexing on the topological circuit of the controller, the integration of the OBC and the motor controller is realized, and the modes of battery charging and motor driving are autonomously switched, and the switching between the two modes is simple and convenient.

[0102] The on-vehicle control circuit of the embodiment of the present invention will be described below.

[0103] The on-vehicle control circuit of the present invention includes: a motor and the controller circuit 10 of the above embodiment, and the controller circuit 10 is connected to the motor for driving the motor.

[0104] According to the on-vehicle control circuit of the embodiment of the present invention, by grouping the bridge arms in the first-phase control circuit 1, the second-phase control circuit 2, and the third-phase control circuit 3 of the three-phase control circuit and setting them as two bridge arm groups connected in parallel, time-division multiplexing is performed on the bridge arm groups according to different modes of the controller. In the charging mode, multiple bridge arm groups in the three-phase control circuit form a charging circuit for battery charging, or in the driving mode, the three-phase control circuit forms a control circuit for controlling the operation of the motor. Without adding additional components to the controller circuit 10 or changing the performance indicators of the motor, by performing time-division multiplexing on the topological circuit of the controller, the integration of the OBC and the motor controller is realized, and the modes of battery charging and motor driving are autonomously switched, and the switching between the two modes is simple and convenient.

[0105] The vehicle of the embodiment of the present invention will be described below.

[0106] The vehicle of the embodiment of the present invention includes the on-vehicle control circuit of the above embodiment.

[0107] For a vehicle according to an embodiment of the present utility model, by grouping the arms in the first-phase control circuit 1, the second-phase control circuit 2, and the third-phase control circuit 3 of the three-phase control circuit into two arm groups connected in parallel, and multiplexing the arm groups according to different modes of the controller. In the charging mode, multiple arm groups in the three-phase control circuit form a charging circuit for battery charging, or in the driving mode, the three-phase control circuit forms a control circuit for controlling the operation of the motor. Without adding additional components to the controller circuit 10 or changing the motor performance indicators, by multiplexing the topology circuit of the controller, the integration of the OBC and the motor controller is achieved, and the modes of battery charging and motor driving can be autonomously switched, and the switching between the two modes is simple and convenient.

[0108] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0109] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A controller circuit, characterized in that, Including: A three-phase control circuit, the three-phase control circuit includes: a first-phase control circuit, a second-phase control circuit, and a third-phase control circuit. The first-phase control circuit, the second-phase control circuit, and the third-phase control circuit include: two bridge arm groups connected in parallel, and the two bridge arm groups are connected between the positive and negative poles of the DC bus, and are used to form a charging circuit for charging the battery, or, used to form a control circuit for controlling the operation of the motor.

2. The controller circuit according to claim 1, wherein, The motor includes a first motor, and the first-phase control circuit includes: A first bridge arm group, the first end of the first bridge arm group is connected to the positive pole, and the second end of the first bridge arm group is connected to the negative pole; A second bridge arm group, the first end of the second bridge arm group is connected to the positive pole, and the second end of the first bridge arm group is connected to the negative pole; A first contact switch, one end of the first contact switch is connected to the midpoint of the first bridge arm of the first bridge arm group, and the other end of the first contact switch is connected to the first-phase wiring terminal of the first motor; A second contact switch, one end of the second contact switch is connected to the midpoint of the second bridge arm of the second bridge arm group, and the other end of the second contact switch is connected to the first-phase wiring terminal of the first motor.

3. The controller circuit according to claim 2, wherein, The first-phase control circuit further includes: A first switch, the first switch is connected to the upper bridge arm of the first bridge arm group, and is used to control the conduction or cut-off of the control wafer in the first bridge arm group; A second switch, the second switch is connected to the lower bridge arm of the first bridge arm group, and is used to control the conduction or cut-off of the control wafer in the first bridge arm group; A third switch, the third switch is connected to the upper bridge arm of the second bridge arm group, and is used to control the conduction or cut-off of the control wafer in the second bridge arm group; A fourth switch, the fourth switch is connected to the lower bridge arm of the second bridge arm group, and is used to control the conduction or cut-off of the control wafer in the second bridge arm group.

4. The controller circuit according to claim 2, wherein, The second-phase control circuit includes: A third bridge arm group, the first end of the third bridge arm group is connected to the positive pole, and the second end of the third bridge arm group is connected to the negative pole; A fourth bridge arm group, the first end of the fourth bridge arm group is connected to the positive pole, and the second end of the fourth bridge arm group is connected to the negative pole; A third contact switch, one end of the third contact switch is connected to the midpoint of the third bridge arm of the third bridge arm group, and the other end of the third contact switch is connected to the second-phase wiring terminal of the first motor; A fourth contact switch, one end of the fourth contact switch is connected to the midpoint of the third bridge arm of the fourth bridge arm group, and the other end of the fourth contact switch is connected to the second-phase wiring terminal of the first motor.

5. The controller circuit according to claim 4, characterized in that, The second-phase control circuit further includes: A fifth switch, the fifth switch is connected to the upper bridge arm of the third bridge arm group, and is used to control the conduction or cut-off of the control wafer in the third bridge arm group; A sixth switch, the sixth switch is connected to the lower bridge arm of the third bridge arm group, and is used to control the conduction or cut-off of the control wafer in the third bridge arm group; A seventh switch, the seventh switch is connected to the upper bridge arm of the fourth bridge arm group, and is used to control the conduction or cut-off of the control wafer in the fourth bridge arm group; The eighth switch, which is connected to the lower arm of the fourth bridge arm group, is used to control the conduction or cutoff of the control wafer in the fourth bridge arm group.

6. The controller circuit according to claim 4, wherein, The third-phase control circuit includes: A fifth bridge arm group, where the first end of the fifth bridge arm group is connected to the positive electrode, and the second end of the fifth bridge arm group is connected to the negative electrode; A sixth bridge arm group, where the first end of the sixth bridge arm group is connected to the positive electrode, and the second end of the sixth bridge arm group is connected to the negative electrode; A fifth contact switch, with one end of the fifth contact switch connected to the midpoint of the fifth bridge arm of the fifth bridge arm group, and the other end of the fifth contact switch connected to the third-phase terminal of the first motor; A sixth contact switch, with one end of the sixth contact switch connected to the midpoint of the sixth bridge arm of the sixth bridge arm group, and the other end of the sixth contact switch connected to the third-phase terminal of the first motor.

7. The controller circuit according to claim 6, characterized in that, The third-phase control circuit further includes: A ninth switch, which is connected to the upper arm of the fifth bridge arm group and is used to control the conduction or cutoff of the control wafer in the fifth bridge arm group; A tenth switch, which is connected to the lower arm of the fifth bridge arm group and is used to control the conduction or cutoff of the control wafer in the fifth bridge arm group; An eleventh switch, which is connected to the upper arm of the sixth bridge arm group and is used to control the conduction or cutoff of the control wafer in the sixth bridge arm group; A twelfth switch, which is connected to the lower arm of the sixth bridge arm group and is used to control the conduction or cutoff of the control wafer in the sixth bridge arm group.

8. The controller circuit according to claim 7, wherein, The three-phase control circuit further includes: A seventh contact switch, with one end of the seventh contact switch connected to the positive electrode; An eighth contact switch, with one end of the eighth contact switch connected to the other end of the seventh contact switch, and the other end of the eighth contact switch connected to the negative electrode.

9. The controller circuit according to claim 8, wherein The controller circuit further includes: A first transformer, where the primary winding of the first transformer is connected to the AC power supply, and the secondary winding of the first transformer is connected to the midpoint of the fifth bridge arm and the midpoint of the sixth bridge arm of the third-phase control circuit.

10. The controller circuit according to claim 1, wherein, The controller circuit further includes: A first capacitor, which is connected in parallel with the three-phase control circuit.

11. The controller circuit according to claim 4, characterized in that, The third-phase control circuit includes: A fifth bridge arm group, where the first end of the fifth bridge arm group is connected to the positive electrode, and the second end of the fifth bridge arm group is connected to the negative electrode; A sixth bridge arm group, where the first end of the sixth bridge arm group is connected to the positive electrode, the second end of the sixth bridge arm group is connected to the negative electrode, and the midpoint of the sixth bridge arm of the sixth bridge arm group is respectively connected to the midpoint of the fifth bridge arm of the fifth bridge arm group and the third-phase terminal of the first motor.

12. The controller circuit according to claim 11, wherein The controller circuit further includes: a fourth-phase control circuit, a fifth-phase control circuit, and a sixth-phase control circuit.

13. The controller circuit according to claim 12, wherein The motor includes a second motor, and the fourth-phase control circuit includes: A seventh bridge arm group, where the first end of the seventh bridge arm group is connected to the positive electrode, the second end of the seventh bridge arm group is connected to the negative electrode, and the midpoint of the seventh bridge arm of the seventh bridge arm group is connected to the first-phase terminal of the second motor; The eighth bridge arm group, the first end of the eighth bridge arm group is connected to the positive electrode, the second end of the eighth bridge arm group is connected to the negative electrode, and the midpoint of the eighth bridge arm of the eighth bridge arm group is connected to the midpoint of the seventh bridge arm.

14. The controller circuit according to claim 13, wherein The fifth-phase control circuit includes: The ninth bridge arm group, the first end of the ninth bridge arm group is connected to the positive electrode, and the second end of the ninth bridge arm group is connected to the negative electrode; The tenth bridge arm group, the first end of the tenth bridge arm group is connected to the positive electrode, and the second end of the tenth bridge arm group is connected to the negative electrode; The ninth contact switch, one end of the ninth contact switch is connected to the midpoint of the ninth bridge arm of the ninth bridge arm group, and the other end of the ninth contact switch is connected to the second-phase connection terminal of the second motor; The tenth contact switch, one end of the tenth contact switch is connected to the midpoint of the tenth bridge arm of the tenth bridge arm group, and the other end of the tenth contact switch is connected to the second-phase connection terminal of the second motor.

15. The controller circuit according to claim 14, wherein, The sixth-phase control circuit includes: The eleventh bridge arm group, the first end of the eleventh bridge arm group is connected to the positive electrode, and the second end of the eleventh bridge arm group is connected to the negative electrode; The twelfth bridge arm group, the first end of the twelfth bridge arm group is connected to the positive electrode, and the second end of the twelfth bridge arm group is connected to the negative electrode; The eleventh contact switch, one end of the eleventh contact switch is connected to the midpoint of the eleventh bridge arm of the eleventh bridge arm group, and the other end of the eleventh contact switch is connected to the third-phase connection terminal of the second motor; The twelfth contact switch, one end of the twelfth contact switch is connected to the midpoint of the twelfth bridge arm of the twelfth bridge arm group, and the other end of the twelfth contact switch is connected to the third-phase connection terminal of the second motor.

16. The controller circuit according to claim 15, wherein The controller circuit further includes: The second transformer, the primary winding of the second transformer is connected to the midpoint of the ninth bridge arm and the midpoint of the tenth bridge arm, and the secondary winding of the second transformer is connected to the midpoint of the eleventh bridge arm and the midpoint of the twelfth bridge arm.

17. The controller circuit according to claim 12, characterized in that, The controller circuit further includes: The second capacitor, the second capacitor is connected in parallel with the sixth-phase control circuit.

18. The controller circuit according to claim 10, characterized in that, One end of the battery is connected to one end of the first capacitor, and the other end of the battery is connected to the other end of the first capacitor.

19. The controller circuit according to any one of claims 1-18, characterized in that, The bridge arm group includes: at least two control wafers.

20. A vehicle-mounted control circuit, characterized in that, Includes: A motor; The controller circuit according to any one of claims 1-17, connected to the motor for driving the motor.

21. A vehicle, characterized in that, Includes: The vehicle-mounted control circuit according to claim 20.

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