CN217048340U - Vehicle power supply device and vehicle - Google Patents
Vehicle power supply device and vehicle Download PDFInfo
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- CN217048340U CN217048340U CN202220519275.6U CN202220519275U CN217048340U CN 217048340 U CN217048340 U CN 217048340U CN 202220519275 U CN202220519275 U CN 202220519275U CN 217048340 U CN217048340 U CN 217048340U
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Abstract
The present disclosure relates to a vehicle power supply device and a vehicle. A vehicle power supply device (100) is provided with: a voltage conversion module (10) provided in an electric drive system of a vehicle, for converting direct current output from a power battery (200) into alternating current and supplying the alternating current to a drive motor (300); the first end of the first switch module (20) is connected with a neutral point of the driving motor, and the second end of the first switch module is connected with a live wire output end of the vehicle power supply device; and a first end of the voltage stabilizing module is connected with a second end of the first switch module, the second end of the voltage stabilizing module is connected with a negative electrode output end of the power battery, the second end of the voltage stabilizing module is connected with a zero line output end of the vehicle power supply device, and the vehicle power supply device is used for providing alternating current for an external load through a live wire output end and the zero line output end. Therefore, the voltage conversion module in the vehicle EDS is multiplexed to perform voltage conversion, so that the number of circuits is reduced, the integration level is increased, and larger power can be output.
Description
Technical Field
The present disclosure relates to power supply technologies for electric vehicles, and particularly to a vehicle power supply device and a vehicle.
Background
In the related art, a Vehicle to Load (V2L) discharge function has been widely used in electric vehicles, for example, to convert a high-voltage dc of a Vehicle into a 50Hz 220V ac power to supply power to an external Load (an induction cooker, an electric fan, a lamp, etc.) from a Vehicle discharge plug or an ac charging port.
The function of V2L of electric vehicles in the current market is mainly completed by an On-board Battery Charger (OBCM), which can convert 220V ac power of an external power grid into dc power suitable for a power Battery to charge the Battery, and also convert the dc power of the power Battery into 220V ac power to supply power to an external load. Or, the direct current can be led out from the vehicle direct current charging port through the adapter, and the direct current is inverted through the adapter and converted into the 220V alternating current to supply power to the external load.
SUMMERY OF THE UTILITY MODEL
To overcome the problems in the related art, the present disclosure provides a vehicle power supply apparatus and a vehicle. According to an embodiment of the present disclosure, there is provided a vehicle power supply apparatus including:
the voltage conversion module is arranged in an electric drive system of the vehicle and used for converting direct current output by the power battery into alternating current and providing the alternating current for the drive motor;
a first switch module, a first end of which is connected to a neutral point of the drive motor and a second end of which is connected to a live wire output of the vehicle power supply device;
the first end of the voltage stabilizing module is connected with the second end of the first switch module, the second end of the voltage stabilizing module is connected with the negative electrode output end of the power battery, the second end of the voltage stabilizing module is connected with the zero line output end of the vehicle power supply device, and the vehicle power supply device is used for providing alternating current for an external load through the live wire output end and the zero line output end.
Optionally, the vehicle power supply device further comprises:
and the second end of the voltage stabilizing module is connected with the zero line output end of the vehicle power supply device through the second switch module.
Optionally, a live wire output end of the vehicle power supply device multiplexes a positive electrode output end of a dc charging port of the vehicle, and a null wire output end of the vehicle power supply device multiplexes a negative electrode output end of the dc charging port of the vehicle.
Optionally, the second switch module is a relay.
Optionally, the second switch module multiplexes a negative relay at a negative output of the dc charging port.
Optionally, the first switch module is a relay, and the voltage stabilizing module is a capacitor.
Optionally, the voltage conversion module is a single-phase, bi-phase or three-phase inverter.
Optionally, the voltage conversion module is further configured to step down the direct current output by the power battery and then output the direct current, the second end of the first switch module is further connected to an anode output end of the vehicle power supply device, the second end of the voltage stabilizing module is further connected to a cathode output end of the vehicle power supply device, and the vehicle power supply device is configured to provide direct current for other vehicles through the anode output end and the cathode output end.
Optionally, the live wire output end and the positive electrode output end share a port, and the zero output end and the negative electrode output end share a port.
The present disclosure also provides a vehicle including a power battery, a driving motor, and the vehicle power supply device provided by the present disclosure.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
the voltage conversion is carried out through a voltage conversion module in the multiplexing vehicle electric drive system, a line is led out from a neutral point of a drive motor, the line is used as a live wire of alternating current of an external load after passing through a first switch module, a line is led out from a negative pole of a power battery and used as a zero line of the alternating current of the external load, and voltage stabilization is carried out between the live wire and the zero line through a voltage stabilization module. Thus, when the V2V function is performed, the electric vehicle does not need to add an additional high-voltage part, reduces wiring, increases integration level, reduces cost, and can output larger power.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a block diagram of a vehicle power supply apparatus shown according to an exemplary embodiment.
Fig. 2 is a block diagram of a vehicle power supply apparatus shown according to another exemplary embodiment.
Fig. 3 is a schematic circuit diagram of a vehicle power supply apparatus shown according to an exemplary embodiment.
Fig. 4 is a circuit schematic diagram of a voltage conversion module shown in accordance with an example embodiment.
Fig. 5 is a circuit schematic of a voltage conversion module shown in accordance with another exemplary embodiment.
Fig. 6 is a circuit schematic diagram of a voltage conversion module shown in accordance with yet another exemplary embodiment.
FIG. 7 is a schematic electrical circuit diagram illustrating a vehicle power supply apparatus providing AC power to other vehicles in accordance with an exemplary embodiment.
Fig. 8 is a circuit schematic of a voltage conversion module shown in accordance with yet another exemplary embodiment.
FIG. 9 is a schematic circuit diagram illustrating a vehicle power supply apparatus providing direct current to other vehicles in accordance with an exemplary embodiment.
Fig. 10 is a schematic circuit diagram illustrating a vehicle power supply apparatus providing direct current to other vehicles according to another exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
It should be noted that all actions of acquiring signals, information or data in the present application are performed under the premise of complying with the corresponding data protection regulation policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
Fig. 1 is a block diagram of a vehicle power supply apparatus shown according to an exemplary embodiment. As shown in fig. 1, the vehicle power supply apparatus 100 may include a voltage conversion module 10, a first switching module 20, and a voltage stabilization module 30.
The voltage conversion module 10 is provided in an Electric Drive System (EDS) of a vehicle, and converts direct current output from the power battery 200 into alternating current and supplies the alternating current to the driving motor 300.
A first end of the first switch module 20 is connected to the neutral point of the driving motor 300, and a second end of the first switch module 20 is connected to the live output (L) of the vehicle power supply device 100.
The first end of the voltage stabilizing module 30 is connected to the second end of the first switch module 20, the second end of the voltage stabilizing module 30 is connected to the negative output end of the power battery 200, and the second end of the voltage stabilizing module 30 is connected to the neutral output end (N) of the vehicle power supply device 100.
In the embodiment of fig. 1, the vehicle power supply apparatus 100 is used for supplying alternating current to an external load, which may be an induction cooker, an electric fan, a lamp, or another vehicle, through a hot output (L) and a neutral output (N). In the related art, when an external device (e.g., a discharge gun) is connected to a vehicle, the vehicle is automatically switched to a parking mode, and the driving motor does not rotate the wheels, and the V2L function of the electric vehicle can perform voltage conversion by multiplexing the voltage conversion module in the EDS.
The first switch module 20 may function to isolate a high voltage, and specifically, when the vehicle normally runs (no external device is connected), the first switch module 20 may be turned off to prevent the voltage of the driving motor from affecting the voltage at the output terminal of the vehicle power supply apparatus 100, and when the vehicle is connected to an external load, the first switch module 20 may be turned on to smoothly output the voltage converted by the voltage conversion module 10.
The voltage stabilizing module 30 is connected between the neutral line and the live line of the vehicle power supply apparatus 100, and may perform a function of filtering and stabilizing voltage. The EDS and the voltage regulator module 30 constitute an inverter circuit, and can output 220V ac power, for example.
The present disclosure performs voltage conversion by multiplexing the voltage conversion module 10 in the vehicle EDS, and draws a line from a neutral point of the driving motor 300, as a live line of an alternating current of an external load after passing through the first switch module 20, draws a line from a negative electrode of the power battery 200, as a zero line of an alternating current of an external load, and performs voltage stabilization between the live line and the zero line by using the voltage stabilization module. In this way, when the V2V function is executed, the electric vehicle does not need to add an extra high-voltage component, reduces wiring, increases integration density, reduces cost, and can output larger power, and can keep up with the voltage platform development of the electric vehicle (gradually canceling OBCM).
V2L of the present disclosure exits the vehicle dc charging port and may be equipped with a conventional dc charging gun guided V2L discharge port.
Fig. 2 is a block diagram of a vehicle power supply apparatus shown according to another exemplary embodiment. As shown in fig. 2, the vehicle power supply device 100 further includes a second switch module 40 on the basis of fig. 1. A second end of the voltage stabilizing module 30 is connected to the neutral output (N) of the vehicle power supply device 100 via the second switch module 40. In this way, the second switch module 40 can be used to control the on/off between the negative output end of the power battery 200 and the zero line output end (N) of the vehicle power supply device 100, thereby further ensuring the reliability of the external power supply of the vehicle power supply device 100.
That is, multiplexing the EDS, one line is drawn from the neutral point of the driving motor 300 as the L line of V2L, plays a role of isolating high voltage through the first switching module 20, and is connected to the positive electrode (DC +) of the DC charging port; the negative bus of the power battery is used as an N line of V2L, and the second switch module 40 is used for high-voltage isolation by using a direct current charging port negative electrode (DC-).
When the vehicle charging system is used, after the V2L discharging gun is connected with a vehicle direct-current charging port, the vehicle recognizes that the gun is V2L discharging, and after a vehicle discharging function is configured, the first switch module 20 and the second switch module 40 are closed to output alternating current.
Fig. 3 is a schematic circuit diagram of a vehicle power supply apparatus shown according to an exemplary embodiment. As shown in fig. 3, bus capacitor C1 is connected between the positive and negative electrodes of power battery 200, and a three-phase inverter is connected to drive motor 300. The fifth switch K5 is a positive pole relay of the power battery. The first switch module 20 is a relay. The second switching module 40 is a relay. The voltage regulation module 30 is a capacitor.
In fig. 3, a Power Distribution Unit (PDU) in the vehicle may also be multiplexed. Specifically, the live output terminal (L) of the vehicle power supply device 100 multiplexes the positive output terminal (DC +) of the DC charging port of the vehicle, and the neutral output terminal (N) of the vehicle power supply device 100 multiplexes the negative output terminal (DC-) of the DC charging port of the vehicle. Therefore, a special interface for supplying alternating current to an external load by a vehicle can be omitted, the integration level is high, and the interface space outside the vehicle is saved.
The positive and negative poles of the power battery 200 are connected with the positive and negative poles of the high-voltage accessory 400 to supply power to the high-voltage accessory 400. In addition, the second switch module 40 may also multiplex a negative relay at the negative output (DC-) of the DC charging port. That is, the fifth switch K5 and the second switch module 40 are a positive relay and a negative relay connected to the positive and negative poles of the power battery 200, respectively. Thus, the device is further saved, and the integration level is improved.
The voltage conversion module 10 may be a single-phase, two-phase or three-phase inverter, and may be configured according to vehicle requirements. Fig. 4-6 are circuit schematic diagrams of voltage conversion modules shown according to three exemplary embodiments, respectively. In fig. 4, after the direct current output by the power battery 200 is inverted by the single-phase inverter, an Alternating Current (AC) is output; in fig. 5, after the direct current output by the power battery 200 is inverted by the two-phase inverter, an Alternating Current (AC) is output; in fig. 6, the direct current output from the power battery 200 is inverted by a three-phase inverter, and then Alternating Current (AC) is output.
The three inverter circuits can be executed according to the output waveforms, the single-phase inverter circuit can directly output 220V alternating current of 50Hz, the power of single-phase inversion is small, and the generated ripple waves are large; the phase angle of the output waveform of the two-phase inverter circuit is 180 degrees, the two-phase inverter power is general, and the generated ripple waves are general; the phase angle difference of the output waveform of the three-phase inverter circuit is 120 degrees, the three-phase inverter power is large, and the generated ripple is small.
In the related art, a Vehicle-to-Vehicle discharge (V2V) function is to charge a Vehicle with dc by converting dc of one electric Vehicle into dc required by another Vehicle (without connecting a Vehicle portable charging device to an ac external discharge receptacle of the other Vehicle). The V2V function of the electric vehicle on the current market is mainly completed by a vehicle-mounted voltage conversion module, and the direct current of the vehicle with the V2V function is boosted/reduced and converted into the direct current suitable for the charged vehicle for charging. The scheme relies on a voltage conversion module, and the low-power V2V is low in experience and low in utilization rate, so that the current V2V function needs to additionally occupy electric vehicle resources.
The vehicle power supply apparatus 100 in the present disclosure may also supply power to other vehicles. Specifically, fig. 7 is a schematic circuit diagram illustrating a vehicle power supply apparatus for supplying alternating current to other vehicles according to an exemplary embodiment. As shown in fig. 7, vehicle power supply apparatus 100 is provided in vehicle a to charge vehicle B. For example, vehicle a outputs 50Hz 220V ac power through a DC charging port (DC +, DC-) and is connected to an ac charging port of vehicle B through a special V2V discharge gun (not shown), and vehicle B converts ac power into DC power through OBCM to charge a power battery, i.e., the EDS is multiplexed to perform the V2V function, which greatly reduces vehicle weight and cost.
According to the above embodiment, the DC charging ports (DC +, DC-) of the vehicle a are multiplexed to output ac power as the live line and the neutral line, respectively. The power battery 201 and the high-voltage load 401 of the vehicle B can be powered by the power gun (not shown) of the vehicle a, which is connected to the OBCM interface of the vehicle B, and the OBCM converts the alternating current into the direct current. Wherein, the discharging gun can select the discharging gun with the DC charging port output and the AC charging port input.
Fig. 8 is a circuit schematic diagram of the voltage conversion module 10 shown according to yet another exemplary embodiment. Unlike fig. 3-6, the voltage conversion module 10 of fig. 8 outputs Direct Current (DC), and the Buck circuit of fig. 8 converts the direct current of the vehicle to a lower voltage direct current.
In an embodiment, the voltage conversion module 10 is further configured to step down the dc power output by the power battery 200 and output the dc power, the second terminal of the first switch module 20 is further connected to a positive output terminal (L) of the vehicle power supply apparatus 100, the second terminal of the voltage stabilizing module 30 is further connected to a negative output terminal (N) of the vehicle power supply apparatus 100, and the vehicle power supply apparatus 100 is configured to provide the dc power for other vehicles through the positive output terminal and the negative output terminal. The live output and the positive output may share a port, and the zero output and the negative output may share a port.
FIG. 9 is a schematic circuit diagram illustrating a vehicle power supply apparatus providing direct current to other vehicles in accordance with an exemplary embodiment. As shown in fig. 9, the voltage conversion module 10 in fig. 8 is applied, and the DC charging port (DC +, DC-) of PDU in the vehicle a outputs the DC power after voltage reduction. The seventh switch K7 and the eighth switch K8 are a positive relay and a negative relay connected to the positive and negative electrodes of the power battery 201 of the vehicle B, respectively. May be connected to the DC charging port (DC +, DC-) of PDU1 in vehicle B by a discharge gun (not shown) of vehicle a. This V2V function is limited by the voltage of the charged vehicle B, which should be less than the voltage of the charging vehicle a. The discharging gun can select the discharging gun with the DC charging port output and the DC charging port input.
That is, the EDS is multiplexed, one line is drawn from the neutral point of the driving motor 300 as the positive electrode of V2V, plays a role of isolating a high voltage through the first switching module 20, and is connected to the positive electrode (DC +) of the DC charging port; the negative bus of the power battery is used as the negative electrode of the V2V, and the second switch module 40 is used for high-voltage isolation by virtue of a direct current charging port negative electrode (DC-).
Fig. 10 is a schematic circuit diagram illustrating a vehicle power supply apparatus providing direct current to other vehicles according to another exemplary embodiment. As shown in fig. 10, a voltage converter 500 is added to the vehicle B in addition to fig. 9. The voltage converter 500 is connected between the seventh switch K7 and the eighth switch K8 and the power battery 201, and is used for increasing the voltage, so that the limitation of power supply to the vehicle B can be broken, and the vehicle B can be supplied with larger power, that is, if the vehicle B to be charged is equipped with the voltage converter 500, the function of V2V with larger power can be realized. The present disclosure may also integrate the V2V function into an electric drive assembly.
The present disclosure also provides a vehicle including a power battery 200, a driving motor 300, and the vehicle power supply device 100 provided by the present disclosure.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A vehicular electric power feeding apparatus characterized in that the vehicular electric power feeding apparatus (100) comprises:
a voltage conversion module (10) provided in an electric drive system of a vehicle, for converting direct current output from a power battery (200) into alternating current and supplying the alternating current to a drive motor (300);
a first switching module (20), a first end of the first switching module (20) being connected to a neutral point of the drive motor (300), a second end of the first switching module (20) being connected to a live output (L) of the vehicle power supply device (100);
a voltage stabilizing module (30), the first end of voltage stabilizing module (30) is connected the second end of first switch module (20), the second termination of voltage stabilizing module (30) the negative pole output of power battery (200), and the second end of voltage stabilizing module (30) is connected zero line output (N) of vehicle power supply unit (100), vehicle power supply unit (100) are used for passing through live wire output (L) with zero line output (N) provides the alternating current for external load.
2. The vehicular power supply apparatus (100) according to claim 1, characterized in that the vehicular power supply apparatus (100) further includes:
and the second end of the voltage stabilizing module (30) is connected with the zero line output end (N) of the vehicle power supply device (100) through the second switch module (40).
3. The vehicle supply equipment (100) according to claim 2, wherein a live output of the vehicle supply equipment (100) multiplexes a positive output of a dc charging port of the vehicle, and a neutral output of the vehicle supply equipment (100) multiplexes a negative output of the dc charging port of the vehicle.
4. The vehicle electrical supply apparatus (100) according to claim 3, characterized in that the second switch module (40) is a relay.
5. Vehicle supply unit (100) according to claim 4, characterized in that the second switching module (40) multiplexes a negative relay at the negative output of the DC charging port.
6. The vehicle supply equipment (100) according to claim 1, wherein the first switching module (20) is a relay and the voltage stabilizing module (30) is a capacitor.
7. The vehicle electrical supply apparatus (100) according to claim 1, characterized in that the voltage conversion module (10) is a single-phase, two-phase or three-phase inverter.
8. The vehicle power supply device (100) according to claim 1, wherein the voltage conversion module (10) is further configured to step down the dc power output by the power battery (200) to output dc power, the second end of the first switch module (20) is further connected to a positive output end of the vehicle power supply device (100), the second end of the voltage stabilizing module (30) is further connected to a negative output end of the vehicle power supply device (100), and the vehicle power supply device (100) is configured to provide dc power to other vehicles through the positive output end and the negative output end.
9. The vehicle power supply apparatus (100) according to claim 8, wherein the live output and the positive output share a port, and the neutral output and the negative output share a port.
10. A vehicle, characterized by comprising a power battery (200), a drive motor (300) and a vehicle power supply device (100) according to any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220519275.6U CN217048340U (en) | 2022-03-10 | 2022-03-10 | Vehicle power supply device and vehicle |
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| CN202220519275.6U CN217048340U (en) | 2022-03-10 | 2022-03-10 | Vehicle power supply device and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061242A1 (en) * | 2022-09-22 | 2024-03-28 | 华为数字能源技术有限公司 | Power supply module, vehicle-to-vehicle power supply control method, and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061242A1 (en) * | 2022-09-22 | 2024-03-28 | 华为数字能源技术有限公司 | Power supply module, vehicle-to-vehicle power supply control method, and vehicle |
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