CN111200308A - A charging circuit and device integrated in a dual motor control system - Google Patents
A charging circuit and device integrated in a dual motor control system Download PDFInfo
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- CN111200308A CN111200308A CN202010110154.1A CN202010110154A CN111200308A CN 111200308 A CN111200308 A CN 111200308A CN 202010110154 A CN202010110154 A CN 202010110154A CN 111200308 A CN111200308 A CN 111200308A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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Abstract
本发明提供一种集成于双电机控制系统的充电电路及装置，适用于具有双电机系统的新能源汽车领域，如插电式混合动力汽车、增程式电动汽车、双电机纯电动汽车等，充电电路包括桥臂单元、第一电机、第二电机、第一充电端以及第二充电端，桥臂单元包括并联连接在电池组正负极的多个桥臂，每个桥臂包括串联的两个开关器件，所有开关器件均包括反并联二极管；第一电机和第二电机分别包括多个绕组，每个绕组分别连接一个桥臂中两个开关器件的公共端；第一电机的任一绕组通过第一充电端连接充电电源,第二电机的任一绕组通过第二充电端连接充电电源。本发明能够将充电电路集成在双电机控制系统中，提高系统的集成度，减小部件的布置空间。
The invention provides a charging circuit and device integrated in a dual-motor control system, which is suitable for the field of new energy vehicles with dual-motor systems, such as plug-in hybrid vehicles, extended-range electric vehicles, dual-motor pure electric vehicles, etc. The circuit includes a bridge arm unit, a first motor, a second motor, a first charging end and a second charging end, the bridge arm unit includes a plurality of bridge arms connected in parallel to the positive and negative poles of the battery pack, and each bridge arm includes two connected in series. There are two switching devices, all of which include anti-parallel diodes; the first motor and the second motor respectively include a plurality of windings, and each winding is respectively connected to the common terminal of the two switching devices in one bridge arm; any winding of the first motor The first charging terminal is connected to the charging power source, and any winding of the second motor is connected to the charging power source through the second charging terminal. The invention can integrate the charging circuit in the dual motor control system, improve the integration degree of the system, and reduce the arrangement space of components.
Description
Technical Field
The invention relates to the technical field of power supply charging, in particular to a charging circuit and a charging device integrated in a dual-motor control system.
Background
In the new energy storage technology connected with the dual-motor control system, on one hand, the energy of an external power supply needs to be stored into a battery in a proper mode; on the other hand, the direct-current voltage of the battery needs to be converted into alternating-current voltage to drive the two motors to work according to the performance requirements of the motors when needed. A scheme of integrating a charging function into a single motor control system has been developed previously, but the scheme is to isolate a charging circuit from a motor through a plurality of relays, and to turn on the charging circuit and turn off the motor during charging; when the motor works, the charging circuit is disconnected, and the motor is switched on. This is not only more costly but also takes up more space. The synchronous matching work of the relays with the contacts not only reduces the working reliability, but also increases the complexity of control. Therefore, it is an urgent need to solve the problem of providing a charging scheme and device integrated with a motor control system with high reliability and low control complexity.
Disclosure of Invention
The invention aims to provide a charging circuit and a device integrated in a dual-motor control system, which can integrate the charging circuit in the dual-motor control system so as to improve the reliability of the device, reduce the complexity of control, release the space of a swing part and greatly reduce the cost.
In a first aspect, the present invention first provides a charging circuit integrated in a dual-motor control system, specifically, the charging circuit includes a bridge arm unit, a first motor, a second motor, a first charging terminal and a second charging terminal, wherein: the bridge arm unit comprises a plurality of bridge arms connected to the positive electrode and the negative electrode of the battery pack in parallel, each bridge arm comprises two switching devices connected in series, and all the switching devices comprise anti-parallel diodes; the first motor and the second motor respectively comprise a plurality of windings, and each winding is respectively connected with the common ends of two switching devices in one bridge arm; any winding of the first motor is connected with a charging power supply through the first charging end, and any winding of the second motor is connected with the charging power supply through the second charging end.
Furthermore, the charging circuit further comprises a voltage-regulating and current-regulating unit, wherein the voltage-regulating and current-regulating unit is connected between the bridge arm unit and the battery pack, so that in a charging state, the voltage-regulating and current-regulating unit regulates the voltage output by the bridge arm unit to be the charging voltage required by the battery pack.
Further, the voltage and current regulating unit is a boost chopper circuit.
Further, the charging circuit further comprises a filter, and the first motor and the second motor are respectively connected with the first charging terminal and the second charging terminal through the filter.
Further, the charging circuit further comprises a relay, and the first motor and the second motor are respectively connected with the first charging end and the second charging end through the relay.
Further, the charging circuit further comprises a control unit, wherein the control unit is connected with the relay so as to switch on the relay in a charging state and switch off the relay in a non-charging state.
Furthermore, the winding connection mode is star winding connection, and the first charging end and/or the second charging end are/is connected with the star winding neutral point.
Furthermore, the winding connection mode is a delta winding connection mode, and the first charging end and/or the second charging end are/is connected with the common end of any two windings in the delta winding.
Further, the charging power supply is a direct current power supply or an alternating current power supply.
In a second aspect, the present invention further provides a charging device integrated in a dual-motor control system, specifically, a charging device integrated in a dual-motor control system, including a battery pack and a charging circuit integrated in a dual-motor control system as described in any one of the above.
The charging circuit and the device integrated in the double-motor control system can integrate the charging circuit in the double-motor control system so as to improve the integration level of the system, effectively reduce the arrangement space of components, reduce the complexity of system control and greatly reduce the cost.
Drawings
Fig. 1 is a block diagram of a charging circuit integrated in a dual-motor control system according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a charging circuit integrated in a dual-motor control system according to an embodiment of the present invention.
FIG. 3 is an equivalent circuit diagram of the embodiment of FIG. 2 in a charging state.
Fig. 4 is a circuit diagram of a non-isolated charging circuit of the voltage-regulating current-regulating unit according to an embodiment of the present invention.
Fig. 5 is a circuit diagram of a charging circuit in which the voltage-regulating current-regulating unit is an isolated type according to an embodiment of the present invention.
Fig. 6 is a circuit diagram of a charging circuit with a star-type connection of a motor according to an embodiment of the present invention.
Fig. 7 is a circuit diagram of a charging circuit with a delta connection motor according to an embodiment of the invention.
Icon: 10-double-motor control module; 11-bridge arm unit; 14-a voltage-regulating and current-regulating unit; 20-a battery pack; 30-a filter; 40-a relay; t1 — first motor; t2 — second motor; f1 — first charging terminal; f2-second charging terminal; q1-first switching device; q2-second switching device; q3-third switching device; q4-fourth switching device; q5-fifth switching device; q6-sixth switching device; q7-seventh switching device; q8-eighth switching device; q9-ninth switching device; q10-tenth switching device; q11-eleventh switching device; q12-twelfth switching device; q13-a tenth switching device; q14-a fourteenth switching device; q15-a fifteenth switching device; q16-a sixteenth switching device; q17-a seventeenth switching device; d1 — first diode; d2 — second diode; d3 — third diode; d4 — fourth diode; d5-fifth diode; c1 — first capacitance; c2 — second capacitance; c3 — third capacitance; k1 — first switch; k2 — second switch; k3 — third switch; k4-fourth switch; k5 — fifth switch; r1 — first resistance; b1 — first transformer.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In a first aspect, the present invention first provides a charging circuit integrated in a dual-motor control system, and fig. 1 is a block diagram of the charging circuit integrated in the dual-motor control system according to an embodiment of the present invention.
As shown in fig. 1, the charging circuit integrated in the dual motor control system includes a dual motor control module 10, a first motor T1, a second motor T2, a first charging terminal F1, and a second charging terminal F2. The dual-motor control module 10 includes a bridge arm unit 11.
Referring to fig. 1, the bridge arm unit 11 is connected to the first charging terminal F1 through a first motor T1, and is connected to the second charging terminal F2 through a second motor T2. The other end of the bridge arm unit 11 is connected to the positive and negative electrodes of the battery pack 20 to provide a charge and discharge channel.
As shown in fig. 1, in one embodiment, the charging circuit integrated into the dual motor control system further includes a filter 30. The first motor T1 is connected to the first charging terminal F1 through the filter 30, and the second motor T2 is connected to the second charging terminal F2 through the filter 30. The filter 30 may be any conventional variety of active or passive filters.
The filter 30 is added to filter the interference signal coupled into the charging power supply, so as to avoid the interference signal from entering the power grid to cause adverse effect, and to isolate the noise of the power grid, so that the charging circuit integrated in the dual-motor control system works in a low-noise environment.
Referring to fig. 1, in an embodiment, the charging circuit integrated in the dual-motor control system further includes a relay 40. The relay 40 is connected to the input terminal of the filter 30 to control the on/off of the charging power source.
In one embodiment, the bridge arm unit 11 includes a plurality of bridge arms connected in parallel to the positive and negative poles of the battery pack 20, each bridge arm includes two switching devices connected in series, and all the switching devices include anti-parallel diodes. The first motor T1 and the second motor T2 each include a plurality of windings, each connected to a common terminal of two switching devices in one leg. Any winding of the first motor T1 is connected to the charging source through the first charging terminal F1, and any winding of the second motor T2 is connected to the charging source through the second charging terminal F2.
Generally, the number of windings of the motor is generally three, and accordingly, the number of arms respectively connected to the windings of the two motors is six. In other embodiments, the number of windings of the electrical machine may be other numbers.
Fig. 2 is a circuit diagram of a charging circuit integrated in a dual-motor control system according to an embodiment of the present invention.
As shown in fig. 2, in an embodiment, the number of windings of two motors is three, and six bridge arms are included in the bridge arm unit 11. In the switching devices of the bridge arm, anti-parallel diodes are parasitic.
Referring to fig. 2, the bridge arm unit 11 includes a first switching device Q1, a second switching device Q2, a third switching device Q3, a fourth switching device Q4, a fifth switching device Q5 and a sixth switching device Q6.
The input end of the first switching device Q1 is connected with the output end of the second switching device Q2 to form a first bridge arm. The input end of the third switching device Q3 is connected with the output end of the fourth switching device Q4 to form a second bridge arm. The input terminal of the fifth switching device Q5 is connected to the output terminal of the sixth switching device Q6 to form a third leg. The output terminal of the first switching device Q1 and the anode of the anti-parallel diode thereof are connected with the cathode of the bus, the output terminal of the third switching device Q3 and the anode of the anti-parallel diode thereof are connected with the cathode of the bus, the output terminal of the fifth switching device Q5 and the anode of the anti-parallel diode thereof are connected with the cathode of the bus, the input terminal of the second switching device Q2 and the cathode of the anti-parallel diode thereof are connected with the anode of the bus, the input terminal of the fourth switching device Q4 and the cathode of the anti-parallel diode thereof are connected with the anode of the bus, and the input terminal of the sixth switching device Q6 and the cathode of the anti-parallel diode thereof are connected with.
With continued reference to fig. 2, the bridge arm unit 11 further includes a seventh switching device Q7, an eighth switching device Q8, a ninth switching device Q9, a tenth switching device Q10, an eleventh switching device Q11 and a twelfth switching device Q12.
An input end of the seventh switching device Q7 is connected to an output end of the eighth switching device Q8 to form a fourth leg, an input end of the ninth switching device Q9 is connected to an output end of the tenth switching device Q10 to form a fifth leg, and an input end of the eleventh switching device Q11 is connected to an output end of the twelfth switching device Q12 to form a sixth leg. The output terminal of the seventh switching device Q7 and the anode of its anti-parallel diode are connected to the negative terminal of the bus, the output terminal of the ninth switching device Q9 and the anode of its anti-parallel diode are connected to the negative terminal of the bus, the output terminal of the eleventh switching device Q11 and the anode of its anti-parallel diode are connected to the negative terminal of the bus, the input terminal of the eighth switching device Q8 and the cathode of its anti-parallel diode are connected to the positive terminal of the bus, the input terminal of the tenth switching device Q10 and the cathode of its anti-parallel diode are connected to the positive terminal of the bus, and the input terminal of the twelfth switching device Q12 and the cathode of its anti-parallel diode are connected to.
Three windings of the first motor T1 are connected to the output terminals of the second switching device Q2, the fourth switching device Q4 and the sixth switching device Q6, respectively. Three windings of the second motor T2 are connected to output terminals of the eighth switching device Q8, the tenth switching device Q10, and the twelfth switching device Q12, respectively. Any winding of the first motor T1 is connected to the first charging terminal F1, and any winding of the second motor T2 is connected to the second charging terminal F2, so as to form a charging circuit.
Referring to fig. 2, in an embodiment, the dual-motor control module 10 further includes a bus filter capacitor C1. And the bus filter capacitor C1 is connected between the positive bus and the negative bus of the bridge arm, and the bus filter capacitor C1 is used for filtering voltage ripples of the bus of the bridge arm. The first capacitor C1 may be a single capacitor or an equivalent capacitor formed by a plurality of capacitors.
In the present embodiment, the bridge arm circuit group in the bridge arm unit 11 is used to drive the motor to rotate when the battery is discharged by controlling the switching devices in the bridge arm; when the battery is charged, all the switch devices in the bridge arms are controlled to be switched off, and the switch tubes in all the bridge arms are equivalent to diodes by utilizing the parasitic anti-parallel diodes in the switch devices. The three windings of the first motor T1 and the second motor T2 are equivalent to three charging paths that are shorted together, respectively, and can provide a larger charging current. All bridge arms are equivalent to a full-bridge rectification circuit, and by utilizing parasitic anti-parallel diodes in switching devices in the bridge arms, full-bridge rectification is performed during charging, rectified direct-current voltage is output, and the battery is charged.
Through utilizing a plurality of bridge arms in the double-motor framework, the charging circuit can be integrated in a double-motor control system, so that the reliability of the device is improved, the control complexity is effectively reduced, the space of a swing part is released, and the cost is greatly reduced.
In one embodiment, the charging power source is a dc power source or an ac power source.
When the charging power supply is an alternating current power supply, the first charging terminal F1 and the second charging terminal F2 are respectively connected with a zero line and a phase line of the charging power supply. When the charging power source is a dc power source, the first charging terminal F1 and the second charging terminal F2 are respectively connected to the positive pole and the negative pole of the charging power source.
Referring to fig. 2, in an embodiment, the dual-motor control module 10 further includes a voltage-regulating and current-regulating unit 14. The voltage-regulating current-regulating unit 14 is connected between the bridge arm unit 11 and the battery pack 20.
In an embodiment, since the dc voltage output by the bridge arm circuit group in the bridge arm unit 11 is lower than the voltage required by the battery pack 20, the voltage-regulating and current-regulating unit 14 may be a non-isolated Boost chopper circuit (Boost) or an isolated Boost circuit such as a transformer circuit. In another embodiment, the dc voltage output by the bridge arm circuit group in the bridge arm unit 11 is higher than the voltage required by the battery pack 20, so the voltage-regulating current-regulating unit 14 may be a voltage-reducing circuit.
By adding the voltage-regulating and current-regulating unit 14, voltage and/or current regulation can be performed on different input power supplies to adapt to the charging needs of the battery pack 20.
In one embodiment, as shown in fig. 2, the positive terminal of the battery pack 20 is provided with a battery discharge terminal and a battery charge terminal. The battery discharge end is directly connected with the positive bus of the bridge arm unit 11, and the battery charge end is connected with the positive bus of the bridge arm unit 11 through the voltage-regulating current-regulating unit 14. By providing a switch in the battery pack 20, the battery discharge terminal is turned on and the battery charge terminal is turned off in the discharge state; and in a charging state, the charging end of the battery is conducted, and the discharging end of the battery is disconnected.
FIG. 3 is an equivalent circuit diagram of the embodiment of FIG. 2 in a charging state.
As shown in fig. 3, in the charging state, all the switching devices in the bridge arm are controlled to be turned off by the bridge arm circuit group in the bridge arm unit 11, and the switching devices in all the bridge arms are equivalently diodes by the parasitic anti-parallel diodes in the switching devices. The three windings of the first motor T1 and the second motor T2 are equivalent to three charging paths that are shorted together, respectively, and can provide a larger charging current. All bridge arms are equivalent to a full-bridge rectification circuit, play a role of full-bridge rectification during charging, and output rectified direct-current voltage, so that the battery is charged by utilizing the original bridge arm architecture of the system.
Fig. 4 is a circuit diagram of a non-isolated charging circuit of the voltage-regulating current-regulating unit according to an embodiment of the present invention.
As shown in fig. 4 and referring to fig. 2, in an embodiment, an additional voltage-regulating current-regulating unit 14 is connected between the bridge arm unit 11 and the battery pack 20, and the voltage-regulating current-regulating unit 14 uses a boost chopper circuit.
As shown in fig. 4, the battery pack 20 includes a first switch K1 and a third switch K3 based on the embodiment of fig. 2. Wherein the first switch K1 is connected between the positive electrode of the battery and the discharging terminal of the battery, and the third switch K3 is connected between the positive electrode of the battery and the charging terminal of the battery. When the battery is in a charging state, the first switch K1 is controlled to be turned off, and the third switch K3 is controlled to be turned on. When the battery is in a discharging state, the first switch K1 is controlled to be turned on, and the third switch K3 is controlled to be turned off. In another embodiment, the battery pack 20 further includes a second switch K2 and a first resistor R1. With continued reference to fig. 4, the second switch K2 is connected in series with the first resistor R1 and then connected in parallel with the first switch K1. Since the on-current ratio is large in the initial stage of the discharge state, the first switch K1 and the third switch K3 are both controlled to be off, and the second switch K2 is controlled to be on. The current through the battery in the initial stage of the discharge state is limited by the current limiting effect of the first resistor R1 to better protect the battery. When the discharging current is stabilized, the first switch K1 is turned on, and the second switch K2 is also turned off, so that the discharging state of the battery is switched.
As shown in fig. 4, the voltage-regulating current-regulating unit 14 includes a diode D1, a first inductor L1, a tenth switching device Q13, and a second capacitor C2. The diode D1 and the first inductor L1 are connected in series between the positive pole of the bridge arm bus of the bridge arm unit 11 and the battery charging end, and the tenth three-switch device Q13 is connected between the common end of the diode D1 and the first inductor L1 and the negative pole of the bridge arm bus of the bridge arm unit 11. The second capacitor C2 is connected between the battery charging terminal and the negative pole of the arm bus of the arm unit 11. Under the control of the on-off of the tenth switching device Q13, the first inductor L1 continuously charges the second capacitor C2, so as to form a proper bootstrap voltage, and then charges the battery pack 20 with electricity. The second capacitor C2 may be a single capacitor or an equivalent capacitor formed by a plurality of capacitors.
In the circuit of the present embodiment, the voltage-regulating current-regulating unit 14 can regulate the voltage and current output by the arm unit 11 to the charging voltage and current required by the battery pack 20 by controlling the on/off of the switching device in the charging state.
With continued reference to fig. 4, in an embodiment, the battery pack 20 further includes a fourth switch K4, and the fourth switch K4 is connected between the negative electrode of the battery and the negative electrode of the voltage-regulating current-regulating unit 14 for turning on the battery pack 20 in an operating state and turning off the battery pack 20 in a non-operating state to better protect the battery.
Fig. 5 is a circuit diagram of a charging circuit in which the voltage-regulating current-regulating unit is an isolated type according to an embodiment of the present invention.
As shown in fig. 5 and referring to fig. 2, in an embodiment, an additional voltage-regulating current-regulating unit 14 is connected between the bridge arm unit 11 and the battery pack 20, and the voltage-regulating current-regulating unit 14 uses a transformer circuit.
As shown in fig. 5, on the basis of the embodiment of fig. 2, the voltage-regulating and current-regulating unit 14 includes a third capacitor C3, a fourteenth switching device Q14, a fifteenth switching device Q15, a sixteenth switching device Q16, a seventeenth switching device Q17, a first transformer B1, a second diode D2, a third diode D3, a fourth diode D4 and a fifth diode D5.
The fourteenth switching device Q14 and the fifteenth switching device Q15 connected in series form a first half-bridge on the primary side of the first transformer B1, and the sixteenth switching device Q16 and the seventeenth switching device Q17 connected in series form a second half-bridge on the primary side of the first transformer B1. The two half bridges are connected in parallel between the positive pole and the negative pole of the bridge arm bus in the bridge arm unit 11, wherein the output ends of the fourteenth switching device Q14 and the sixteenth switching device Q16 are connected with the negative pole of the bus, and the input ends of the fifteenth switching device Q15 and the seventeenth switching device Q17 are connected with the positive pole of the bus. The in-phase primary end of the first transformer B1 is connected to the common end of the fourteenth switching device Q14 and the fifteenth switching device Q15, and the out-phase primary end of the first transformer B1 is connected to the common end of the sixteenth switching device Q16 and the seventeenth switching device Q17. The series connection of the third diode D3 and the second diode D2 is connected between the battery charging terminal and the battery cathode, wherein the anode of the third diode D3 is connected to the battery cathode, and the cathode of the second diode D2 is connected to the battery charging terminal. The series connection of the fifth diode D5 and the fourth diode D4 is connected between the battery charging terminal and the battery negative terminal, wherein the anode of the fifth diode D5 is connected to the battery negative terminal, and the cathode of the fourth diode D4 is connected to the battery charging terminal. The in-phase secondary terminal of the first transformer B1 is connected to the common terminal of the fifth diode D5 and the fourth diode D4, and the inverted secondary terminal of the first transformer B1 is connected to the common terminal of the third diode D3 and the second diode D2. The four diodes constitute a full-bridge rectifier circuit on the secondary side of the first transformer B1. The third capacitor C3 is connected between the battery charging terminal and the battery negative electrode, and is used for reducing the ripple factor of the charging voltage and smoothing the direct current output. The third capacitor C3 may be a single capacitor or an equivalent capacitor formed by a plurality of capacitors.
In this embodiment, in the charging state, the voltage-regulating current-regulating unit 14 regulates the voltage and the current output by the arm unit 11 to the voltage and the current required for charging the battery pack 20 by controlling on/off of each switching device on the primary side of the first transformer B1.
With continued reference to fig. 5, in an embodiment, the voltage-regulating current-regulating unit 14 further includes a fifth switch K5. The fifth switch K5 is connected between the negative electrode of the bridge arm bus and the negative electrode of the battery in the bridge arm unit 11, and is turned off in the charging state and turned on in the discharging state. By adding the fifth switch K5, the primary side and the secondary side of the transformer can be completely isolated in the charging state, and the safety is better enhanced.
Fig. 6 is a circuit diagram of a charging circuit with a star-type connection of a motor according to an embodiment of the present invention.
As shown in fig. 6, in an embodiment, the winding connection mode in the motor is a star winding connection, and the first charging terminal F1 and/or the second charging terminal F2 are connected to a star winding neutral point of the motor. In other embodiments, for a star-winding motor, the charging terminal may be connected to any winding of the motor.
As shown in fig. 6 and referring to fig. 2, in an embodiment, the charging circuit integrated in the dual-motor control system further includes a filter 30. The first motor T1 is connected to the first charging terminal F1 through the filter 30, and the second motor T2 is connected to the second charging terminal F2 through the filter 30. The filter 30 may be any conventional variety of active or passive filters.
The filter 30 is added, so that interference signals coupled into the charging power supply can be filtered, adverse effects caused by interference signals entering a power grid are avoided, and meanwhile, power grid noise is isolated, so that the charging circuit integrated in the dual-motor control system works in a low-noise environment.
Referring to fig. 6, in an embodiment, the charging circuit integrated in the dual-motor control system further includes a relay 40. The relay 40 is connected to the input terminal of the filter 30 to control the on/off of the charging power source. By adding the power switch of the relay 40, the charging circuit can be turned on when charging is needed, and can be turned off when in a non-charging state and abnormal conditions such as electric leakage, overheating and overcurrent exist.
In one embodiment, the charging circuit integrated in the two-motor control system further comprises a control unit connected to the relay 40 to control the charging circuit to be turned on in the charging state under normal conditions and to be turned off in the non-charging state including abnormal conditions.
The control unit can also be simultaneously connected with other components in the system to realize synchronous control based on the working state of each part of the system. For example, the control unit may synchronously control each switching device in the voltage-regulating and current-regulating unit 14, or may synchronously control each switching device of each arm in the arm unit 11.
Fig. 7 is a circuit diagram of a charging circuit with a delta connection motor according to an embodiment of the invention.
As shown in fig. 7 and referring to fig. 2, in an embodiment, the windings in the motor are connected in a delta winding manner, and the first charging terminal F1 and/or the second charging terminal F2 are connected to a common terminal of any two windings in the delta winding of the motor.
In a second aspect, the present invention also provides a charging device integrated with a dual motor control system.
In one embodiment, the charging device integrated in the dual-motor control system comprises a battery pack and any one of the charging circuits integrated in the dual-motor control system. The working principle of the charging device integrated in the dual-motor control system is the same as that of the corresponding embodiment, and is not described herein again.
In the above embodiments, the battery pack may be a single battery pack, or may be a battery module in which a plurality of battery packs are connected in series and parallel.
It should be noted that, in the above embodiments, the switching device may be an IGBT (insulated gate bipolar transistor) or a MOSFET (metal oxide semiconductor field effect transistor).
The charging circuit and the device integrated in the double-motor control system can integrate the charging circuit in the double-motor control system so as to improve the integration level of the system, effectively reduce the arrangement space of components, reduce the complexity of system control and greatly reduce the cost.
In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.
As used herein, the ordinal adjectives "first", "second", etc., used to describe an element are merely to distinguish between similar elements and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.
As used herein, the meaning of "a plurality" or "a plurality" is two or more unless otherwise specified.
It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, and the program may be stored in a computer readable storage medium, and when executed, performs the steps including the above method embodiments. The foregoing storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and all such changes or substitutions are included in the scope of the present disclosure. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A charging circuit integrated in a two-motor control system, comprising a bridge arm unit (11), a first motor (T1), a second motor (T2), a first charging terminal (F1) and a second charging terminal (F2), wherein:
the bridge arm unit (11) comprises a plurality of bridge arms connected in parallel to the positive and negative electrodes of the battery pack (20), each bridge arm comprises two switching devices connected in series, and all the switching devices comprise anti-parallel diodes;
the first motor (T1) and the second motor (T2) respectively comprise a plurality of windings, and each winding is respectively connected with the common end of two switching devices in one bridge arm;
any winding of the first motor (T1) is connected with a charging power source through the first charging terminal (F1), and any winding of the second motor (T2) is connected with the charging power source through the second charging terminal (F2).
2. The charging circuit according to claim 1, further comprising a voltage-regulating current-regulating unit (14), wherein the voltage-regulating current-regulating unit (14) is connected between the bridge arm unit (11) and the battery pack (20), so that in a charging state, the voltage-regulating current-regulating unit (14) regulates the voltage output by the bridge arm unit (11) to a charging voltage required by the battery pack (20).
3. The charging circuit according to claim 2, wherein the voltage-regulating current-regulating unit (14) is a boost chopper circuit.
4. The charging circuit according to claim 1, characterized in that it further comprises a filter (30), the first motor (T1) and the second motor (T2) being connected to the first charging terminal (F1) and the second charging terminal (F2) respectively through the filter (30).
5. The charging circuit according to claim 1, characterized in that it further comprises a relay (40), the first motor (T1) and the second motor (T2) being connected to the first charging terminal (F1) and the second charging terminal (F2) through the relay (40), respectively.
6. A charging circuit as claimed in claim 5, characterized in that the charging circuit further comprises a control unit connected to the relay (40) for switching the relay (40) on in a charging state and for switching the relay (40) off in a non-charging state.
7. The charging circuit according to claim 1, wherein the winding connection is a star winding connection, and the first charging terminal (F1) and/or the second charging terminal (F2) is connected to the star winding neutral point.
8. The charging circuit according to claim 1, wherein the winding connection is a delta winding connection, and the first charging terminal (F1) and/or the second charging terminal (F2) is connected to a common terminal of any two of the delta windings.
9. The charging circuit of claim 1, wherein the charging power source is a direct current power source or an alternating current power source.
10. A charging device integrated in a two-motor control system, comprising a battery pack (20) and a charging circuit integrated in a two-motor control system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010110154.1A CN111200308A (en) | 2020-02-23 | 2020-02-23 | A charging circuit and device integrated in a dual motor control system |
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| CN202010110154.1A CN111200308A (en) | 2020-02-23 | 2020-02-23 | A charging circuit and device integrated in a dual motor control system |
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| CN202010110154.1A Pending CN111200308A (en) | 2020-02-23 | 2020-02-23 | A charging circuit and device integrated in a dual motor control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332714A (en) * | 2020-10-09 | 2021-02-05 | 苏州谷夫道自动化科技有限公司 | Multi-axis servo driving system |
| CN112737073A (en) * | 2020-12-23 | 2021-04-30 | 广州橙行智动汽车科技有限公司 | Charging circuit, charging system and electric automobile |
| CN115817231A (en) * | 2022-12-15 | 2023-03-21 | 小米汽车科技有限公司 | Electric automobile and charging device thereof |
| WO2024207830A1 (en) * | 2023-04-06 | 2024-10-10 | 江苏速豹动力科技有限公司 | Battery heating system and electric truck |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08126121A (en) * | 1994-10-19 | 1996-05-17 | Toyota Motor Corp | Charging apparatus mounted on electric automobile |
| CN1911705A (en) * | 2005-08-08 | 2007-02-14 | 丰田自动车株式会社 | Power supply device for vehicle and method of controlling the same |
| CN101635529A (en) * | 2008-07-21 | 2010-01-27 | 通用汽车环球科技运作公司 | Power processing systems and methods for use in plug-in electric vehicles |
| CN106031016A (en) * | 2014-02-14 | 2016-10-12 | 捷普电子电路有限公司 | Charge transfer system |
| US20180334043A1 (en) * | 2017-05-17 | 2018-11-22 | Ford Global Technologies, Llc | Reduced ripple converter for hybrid drive systems |
| CN109167551A (en) * | 2018-10-30 | 2019-01-08 | 贵州航天林泉电机有限公司 | A kind of H bridge automotive motor controller of integrated charge function |
-
2020
- 2020-02-23 CN CN202010110154.1A patent/CN111200308A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08126121A (en) * | 1994-10-19 | 1996-05-17 | Toyota Motor Corp | Charging apparatus mounted on electric automobile |
| CN1911705A (en) * | 2005-08-08 | 2007-02-14 | 丰田自动车株式会社 | Power supply device for vehicle and method of controlling the same |
| CN101635529A (en) * | 2008-07-21 | 2010-01-27 | 通用汽车环球科技运作公司 | Power processing systems and methods for use in plug-in electric vehicles |
| CN106031016A (en) * | 2014-02-14 | 2016-10-12 | 捷普电子电路有限公司 | Charge transfer system |
| CN110266216A (en) * | 2014-02-14 | 2019-09-20 | 捷普有限公司 | Charge transportation system |
| US20180334043A1 (en) * | 2017-05-17 | 2018-11-22 | Ford Global Technologies, Llc | Reduced ripple converter for hybrid drive systems |
| CN109167551A (en) * | 2018-10-30 | 2019-01-08 | 贵州航天林泉电机有限公司 | A kind of H bridge automotive motor controller of integrated charge function |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332714A (en) * | 2020-10-09 | 2021-02-05 | 苏州谷夫道自动化科技有限公司 | Multi-axis servo driving system |
| CN112737073A (en) * | 2020-12-23 | 2021-04-30 | 广州橙行智动汽车科技有限公司 | Charging circuit, charging system and electric automobile |
| CN115817231A (en) * | 2022-12-15 | 2023-03-21 | 小米汽车科技有限公司 | Electric automobile and charging device thereof |
| CN115817231B (en) * | 2022-12-15 | 2024-04-30 | 小米汽车科技有限公司 | Electric automobile and charging device thereof |
| WO2024207830A1 (en) * | 2023-04-06 | 2024-10-10 | 江苏速豹动力科技有限公司 | Battery heating system and electric truck |
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Application publication date: 20200526 |