CN219505859U - Bidirectional charging and discharging system of electric automobile - Google Patents
Bidirectional charging and discharging system of electric automobile Download PDFInfo
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- CN219505859U CN219505859U CN202320442180.3U CN202320442180U CN219505859U CN 219505859 U CN219505859 U CN 219505859U CN 202320442180 U CN202320442180 U CN 202320442180U CN 219505859 U CN219505859 U CN 219505859U
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 72
- 238000007599 discharging Methods 0.000 title claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 claims abstract description 75
- 238000004891 communication Methods 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 24
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a bidirectional charging and discharging system of an electric automobile, which comprises an alternating current plug, a bidirectional current conversion module, a direct current voltage conversion module, a charging and discharging control device, a high-voltage contactor, a low-voltage relay, a charging gun, a battery pack, a vehicle control device and a vehicle socket. The utility model reduces the equipment cost, improves the charging efficiency of the electric automobile and the use experience of users, and can be widely applied to the technical field of new energy automobiles.
Description
Technical Field
The utility model relates to the technical field of new energy automobiles, in particular to a bidirectional charging and discharging system of an electric automobile.
Background
The new energy automobile generally adopts a charging gun to be connected with a vehicle side socket in an adaptive manner for charging, and common charging modes comprise direct current charging (also known as quick charging) and alternating current charging (also known as slow charging), and if the direct current charging socket is only arranged on the vehicle side, charging cannot be performed when the alternating current charging pile is arranged, and vice versa. In the prior art, a direct current charging socket and an alternating current charging socket are installed at the side of a vehicle at the same time to meet different use scenes, equipment cost is increased, and a charging socket based on the GBT20234 quick charging standard only supports direct current charging, so that when only an alternating current charging pile or other alternating current power supplies are used, a user cannot quickly charge the vehicle, and the charging efficiency of an electric automobile and the use experience of the user are affected. In addition, the unidirectional charging system in the prior art cannot meet the requirement of supplying electric energy at the vehicle side to external electric equipment.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present utility model aims to: the bidirectional charging and discharging system of the electric automobile is low in cost and high in efficiency.
The technical scheme adopted by the utility model is as follows:
the utility model provides an electric automobile bidirectional charge and discharge system, includes alternating current plug, bidirectional current conversion module, direct voltage conversion module, charge and discharge controlling means, high voltage contact ware, low voltage relay, rifle that charges, battery package, vehicle controlling means and vehicle socket, bidirectional current conversion module's alternating current end with alternating current plug connects, bidirectional current conversion module's direct current end passes through high voltage contact ware with the high voltage interface of rifle that charges is connected, bidirectional current conversion module's direct current end still passes through direct voltage conversion module low voltage relay with the low voltage interface of rifle that charges is connected, bidirectional current conversion module high voltage contact ware and low voltage relay all with charge and discharge controlling means is connected, charge and discharge controlling means still with charge gun's communication interface connection, charge gun with vehicle socket looks adaptation, vehicle socket's high voltage interface with battery package connection, vehicle socket's low voltage interface and communication interface all with vehicle controlling means is connected with vehicle package.
Further, in one embodiment of the present utility model, the bi-directional current conversion module is a bi-directional AC-DC converter.
Further, in an embodiment of the present utility model, the direct current voltage conversion module is a DC-DC converter.
Further, in one embodiment of the present utility model, the high voltage contactor includes a positive electrode contactor and a negative electrode contactor, the direct current positive end of the bidirectional current conversion module is connected with the positive end of the high voltage interface of the charging gun through the positive electrode contactor, and the direct current negative end of the bidirectional current conversion module is connected with the negative end of the high voltage interface of the charging gun through the negative electrode contactor.
Further, in one embodiment of the present utility model, the low voltage relay includes a positive electrode relay and a negative electrode relay, the output positive end of the direct current voltage conversion module is connected with the positive end of the low voltage interface of the charging gun through the positive electrode relay, and the output negative end of the direct current voltage conversion module is connected with the low voltage interface negative end of the charging gun through the negative electrode relay.
Further, in an embodiment of the present utility model, the bidirectional charging and discharging system for an electric vehicle further includes a leakage detection module, where the leakage detection module is configured to detect whether there is a leakage between the ac plug and the bidirectional current conversion module, and the leakage detection module is connected to the charging and discharging control device.
Further, in an embodiment of the present utility model, the bidirectional charge and discharge system for an electric vehicle further includes an overcurrent detection module, where the overcurrent detection module is configured to detect whether there is an overcurrent between the bidirectional current conversion module and the high-voltage contactor, and the overcurrent detection module is connected to the charge and discharge control device.
Further, in an embodiment of the present utility model, the bidirectional charging and discharging system for an electric automobile further includes an alarm module, and the alarm module is connected with the charging and discharging control device.
Further, in an embodiment of the present utility model, the alarm module includes at least one of an indicator light, a buzzer, and a voice prompt unit.
Further, in an embodiment of the present utility model, the bidirectional charging and discharging system for an electric automobile further includes a wireless communication module, where the wireless communication module is connected to the charging and discharging control device, and the wireless communication module is used to communicate with a user terminal or a cloud server.
The beneficial effects of the utility model are as follows: the bidirectional charging and discharging system of the electric automobile comprises an alternating current plug, a bidirectional current conversion module, a direct current voltage conversion module, a charging and discharging control device, a high-voltage contactor, a low-voltage relay, a charging gun, a battery pack, a vehicle control device and a vehicle socket, wherein when charging is carried out, the bidirectional alternating current conversion module converts alternating current accessed by the alternating current plug into high-voltage direct current, the direct current voltage conversion module converts the high-voltage direct current into low-voltage direct current, the charging and discharging control device controls the low-voltage relay to be closed so that the low-voltage direct current can supply power for the vehicle control device through the charging gun and the charging socket, and meanwhile, the charging and discharging control device carries out communication handshake with the vehicle control device through a communication interface of the charging gun, and then controls the high-voltage contactor to be closed so that the high-voltage direct current can charge the battery pack through the charging gun and the charging socket; when discharging, the charging and discharging control device performs communication handshake with the vehicle control device through the communication interface of the charging gun, then the charging and discharging control device controls the high-voltage contactor to be closed, and controls the bidirectional alternating current conversion module to convert high-voltage direct current accessed by the vehicle side into alternating current, so that power can be supplied to external electric equipment. According to the utility model, the electric automobile can be rapidly charged by using the alternating current power supply, and only the direct current charging socket is required to be arranged at the side of the automobile, so that the equipment cost is reduced, and the charging efficiency of the electric automobile and the use experience of a user are improved; the bidirectional current conversion module can convert the electric energy stored on the vehicle side into alternating current for external electric equipment to use, and the function of external emergency power supply of the electric automobile is realized.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a bidirectional charging and discharging system of an electric vehicle according to an embodiment of the present utility model.
Reference numerals:
p1, alternating current plug; p2, a charging gun; p3, vehicle socket; c1, a charge-discharge control device; c2, a vehicle control device; k1, an anode contactor; k2, a negative electrode contactor; k3, positive relay; k4, a negative relay; w, battery pack; s1, an electric leakage detection module; s2, an overcurrent detection module; DC+, positive side of high voltage interface; DC-, high voltage interface negative terminal; a+, the positive end of the low-voltage interface; a-, a negative end of a low-voltage interface; CANH and CANL, communication interfaces.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
Referring to fig. 1, an embodiment of the present utility model provides a bidirectional charging and discharging system for an electric vehicle, which includes an ac plug P1, a bidirectional current conversion module, a dc voltage conversion module, a charging and discharging control device C1, a high-voltage contactor, a low-voltage relay, a charging gun P2, a battery pack W, a vehicle control device C2, and a vehicle socket P3, wherein the ac end of the bidirectional current conversion module is connected with the ac plug P1, the dc end of the bidirectional current conversion module is connected with the high-voltage interface of the charging gun P2 through a high-voltage contactor, the dc end of the bidirectional current conversion module is also connected with the low-voltage interface of the charging gun P2 through the dc voltage conversion module, the low-voltage relay, the bidirectional current conversion module, the high-voltage contactor, and the low-voltage relay are all connected with the charging and discharging control device C1, the charging and discharging control device C1 is also connected with the communication interface of the charging gun P2, the charging gun P2 is adapted to the vehicle socket P3, the high-voltage interface of the vehicle socket P3 is connected with the battery pack W, and the low-voltage interface of the vehicle socket P3 is also connected with the vehicle control device C2.
The embodiment of the utility model comprises an alternating current plug P1, a bidirectional current conversion module, a direct current voltage conversion module, a charging and discharging control device C1, a high-voltage contactor, a low-voltage relay, a charging gun P2, a battery pack W, a vehicle control device C2 and a vehicle socket P3, wherein when charging is carried out, the bidirectional alternating current conversion module converts alternating current accessed by the alternating current plug P1 into high-voltage direct current, the direct current voltage conversion module converts the high-voltage direct current into low-voltage direct current, the charging and discharging control device C1 controls the low-voltage relay to be closed so that the low-voltage direct current can supply power for the vehicle control device C2 through the charging gun P2 and the charging socket, meanwhile, the charging and discharging control device C1 carries out communication handshake with the vehicle control device C2 through a communication interface of the charging gun P2, and then the charging and discharging control device C1 controls the high-voltage contactor to be closed so that the high-voltage direct current can charge the battery pack W through the charging gun P2 and the charging socket; the vehicle control device C2 can monitor the state of charge of the battery pack W in real time, and when the electric quantity reaches the high electric quantity threshold value, the vehicle control device C2 requests the charge-discharge control device C1 to stop charging, and at this time, the charge-discharge control device C1 can control the bidirectional ac conversion module to stop working and disconnect the high-voltage contactor and the low-voltage relay.
When discharging, the charge-discharge control device C1 performs communication handshake with the vehicle control device C2 through the communication interface of the charge gun P2, then the charge-discharge control device C1 controls the high-voltage contactor to be closed, and controls the bidirectional alternating current conversion module to convert high-voltage direct current accessed by the vehicle side into alternating current, so that external electric equipment can be powered; the vehicle control device C2 can monitor the state of charge of the battery pack W in real time, and when the electric quantity reaches the low electric quantity threshold value, the vehicle control device C2 requests the charge and discharge control device C1 to stop discharging, and at this time, the charge and discharge control device C1 can control the bidirectional ac conversion module to stop working and disconnect the high-voltage contactor and the low-voltage relay.
According to the embodiment of the utility model, the electric automobile can be rapidly charged by using the alternating current power supply, and only the direct current charging socket is required to be arranged at the side of the automobile, so that the equipment cost is reduced, and the charging efficiency of the electric automobile and the use experience of a user are improved; the bidirectional current conversion module can convert the electric energy stored on the vehicle side into alternating current for external electric equipment to use, and the function of external emergency power supply of the electric automobile is realized.
It should be noted that, the connection port between the charging gun P2 and the vehicle socket P3 in fig. 1 further includes a PE port for grounding, a CC1 port for charging connection confirmation, and a CC2 port, a resistor R1 is connected between the PE port on the charging gun P2 side and the CC1 port, a resistor R2 is connected between the PE port CC2 port, and a resistor R3 is connected between the PE port on the vehicle socket P3 side and the CC1 port, which are all conventional arrangements of dc charging interfaces in the prior art, and the embodiments of the present utility model are not specifically described herein. Further, the dc+, DC-, a+, a-, CANH, and CANL ports are each arranged in pairs on the charging gun P2 side and the vehicle outlet P3 side, only the vehicle outlet P3 side being shown in fig. 1.
In some alternative embodiments, the charge and discharge control device C1 includes at least one logic computing device selected from an MCU (Micro-programmed Control Unit, micro-programmed control device), a CPU (Central Processing Unit ), a DSP (Digital Signal Processor, digital signal processor), a single chip microcomputer, and an embedded device.
In some alternative embodiments, the vehicle control device C2 is a BMS battery management module.
Referring to fig. 1, further as an alternative embodiment, the bi-directional current conversion module is a bi-directional AC-DC converter.
Specifically, the bidirectional AC-DC converter may convert alternating current to direct current, or vice versa.
Referring to fig. 1, further as an alternative embodiment, the direct voltage conversion module is a DC-DC converter.
Specifically, in the embodiment of the present utility model, unidirectional conversion of high-voltage direct current to low-voltage direct current (12V) which can be used to wake up and supply power to the vehicle control device C2 on the vehicle side is achieved by the DC-DC converter.
Referring to fig. 1, as a further alternative embodiment, the high-voltage contactor includes a positive electrode contactor K1 and a negative electrode contactor K2, a direct current positive end of the bidirectional current conversion module is connected with a high-voltage interface positive end of the charging gun P2 through the positive electrode contactor K1, and a direct current negative end of the bidirectional current conversion module is connected with a high-voltage interface negative end of the charging gun P2 through the negative electrode contactor K2.
Specifically, the positive contactor K1 is used for controlling the on-off of the direct current positive end of the bidirectional current conversion module and the positive end of the high-voltage interface of the charging gun P2, and the negative contactor K2 is used for controlling the on-off of the direct current negative end of the bidirectional current conversion module and the negative end of the high-voltage interface of the charging gun P2; when the positive electrode contactor K1 and the negative electrode contactor K2 are simultaneously closed, the two-phase current conversion module can deliver high-voltage direct current to the high-voltage interface of the charging gun P2.
Referring to fig. 1, as a further alternative embodiment, the low-voltage relay includes a positive relay K3 and a negative relay K4, and an output positive terminal of the dc voltage conversion module is connected to a low-voltage interface positive terminal of the charging gun P2 through the positive relay K3, and an output negative terminal of the dc voltage conversion module is connected to a low-voltage interface negative terminal of the charging gun P2 through the negative relay K4.
Specifically, the positive relay K3 is used for controlling the on-off of the output positive end of the direct-current voltage conversion module and the positive end of the low-voltage interface of the charging gun P2, and the negative relay K4 is used for controlling the on-off of the output negative end of the direct-current voltage conversion module and the negative end of the low-voltage interface of the charging gun P2; when the positive relay K3 and the negative relay K4 are simultaneously closed, the direct-current voltage conversion module can deliver low-voltage direct current to the low-voltage interface of the charging gun P2.
Referring to fig. 1, as a further alternative embodiment, the bidirectional charging and discharging system for an electric automobile further includes a leakage detection module S1, where the leakage detection module S1 is configured to detect whether there is a leakage between the ac plug P1 and the bidirectional current conversion module, and the leakage detection module S1 is connected to the charging and discharging control device C1.
Specifically, the leakage detection module S1 is configured to detect whether there is a leakage on the ac side in real time, and feed back the result to the charge/discharge control device C1, where the charge/discharge control device C1 may disconnect the high-voltage contactor when there is a leakage, and send a leakage alarm to the vehicle control device C2.
Referring to fig. 1, as a further alternative embodiment, the bidirectional charge and discharge system of the electric vehicle further includes an overcurrent detection module S2, where the overcurrent detection module S2 is configured to detect whether there is an overcurrent between the bidirectional current conversion module and the high-voltage contactor, and the overcurrent detection module S2 is connected to the charge and discharge control device C1.
Specifically, the overcurrent detection module S2 is configured to detect in real time whether the current on the dc side is higher than a preset threshold, and feed back the result to the charge/discharge control device C1, where the charge/discharge control device C1 may disconnect the high-voltage contactor when there is an overcurrent, and send an overcurrent alarm to the vehicle control device C2.
Further as an alternative implementation manner, the electric automobile bidirectional charge and discharge system further comprises an alarm module, and the alarm module is connected with the charge and discharge control device C1.
Specifically, the alarm module is used for sending out an alarm to remind related personnel of abnormal conditions such as electricity leakage, overcurrent and the like.
Further as an alternative embodiment, the alarm module includes at least one of an indicator light, a buzzer, and a voice prompt unit.
Specifically, the indicator lights can be turned on to flash, the buzzer sounds a buzzer or the voice prompt unit carries out voice broadcasting to remind related personnel of abnormal conditions.
Further as an optional implementation manner, the bidirectional charging and discharging system of the electric automobile further comprises a wireless communication module, wherein the wireless communication module is connected with the charging and discharging control device C1 and is used for communicating with a user terminal or a cloud server.
Specifically, the wireless communication module can remotely transmit the charging record of the electric automobile to the cloud server or the user terminal of related personnel, so that remote checking and tracing are facilitated.
The system configuration of the embodiment of the present utility model is described above. The following describes the overall operation of an embodiment of the present utility model.
And (3) charging:
1. the user connects the alternating current plug to a commercial power socket, and the charging gun is connected to a vehicle side socket;
2. the bidirectional current conversion device converts alternating current commercial power into direct current, and the direct current voltage converter converts high-voltage direct current into 12V direct current voltage;
3. the charge-discharge control device controls the low-voltage relay to be closed so as to supply power to the vehicle control device;
4. the charge and discharge control device performs communication handshake with the vehicle control device through CAN communication;
5. after the communication handshake is completed, the charge-discharge control device controls the high-voltage contactor to be closed, requests high-voltage direct current and high-voltage current to the bidirectional current conversion device, and transmits the high-voltage direct current to the battery pack;
6. the electric leakage detection sensor detects whether electric leakage exists on the alternating current side in real time, if the electric leakage occurs, the high-voltage contactor is disconnected, and an electric leakage fault is sent to the vehicle control device through CAN communication;
7. the charge-discharge control device detects high-voltage direct current in real time through the current sensor, and when the actual current is larger than the request current, the high-voltage contactor is disconnected, and an overcurrent fault is sent to the vehicle control device through CAN communication;
8. the vehicle control device calculates the battery pack state of charge in real time, and when the electric quantity reaches a high electric quantity threshold value, the vehicle control device requests the charge-discharge control device to stop charging, and at the moment, the charge-discharge control device controls the bidirectional current conversion device to stop direct current output and disconnect the high-voltage contactor;
9. when a user disconnects the charging gun, the charging and discharging control device controls the bidirectional current conversion device to stop direct current output and disconnect the high-voltage contactor.
The discharging process comprises the following steps:
1. the user connects the charging gun to the vehicle-side outlet;
2. the charge and discharge control device performs communication handshake with the vehicle control device through CAN communication;
3. after the communication handshake is completed, the charge-discharge control device controls the high-voltage contactor to be closed, and controls the current conversion device to output 220V alternating current;
4. the electric leakage detection sensor detects whether electric leakage exists on the alternating current side in real time, if the electric leakage occurs, the high-voltage contactor is disconnected, and an electric leakage fault is sent to the vehicle control device through CAN communication;
5. the charge-discharge control device detects high-voltage direct current in real time through the current sensor, and when the actual current is larger than the allowable current, the high-voltage contactor is disconnected, and an overcurrent fault is sent to the vehicle control device through CAN communication;
6. the vehicle control device calculates the battery pack state of charge in real time, and when the electric quantity reaches a low electric quantity threshold value, the vehicle control device requests the charge and discharge control device to stop discharging, and at the moment, the charge and discharge control device controls the bidirectional current conversion device to stop alternating current output and disconnect the high-voltage contactor;
7. when a user disconnects the charging gun, the charging and discharging control device controls the bidirectional current conversion device to stop alternating current output and disconnect the high-voltage contactor.
It can be realized that the utility model can use the alternating current power supply to charge the electric automobile rapidly, and the vehicle side only needs to be provided with the direct current charging socket, thereby reducing the equipment cost and improving the charging efficiency of the electric automobile and the use experience of users; the bidirectional current conversion module can convert the electric energy stored on the vehicle side into alternating current for external electric equipment to use, and the function of external emergency power supply of the electric automobile is realized.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present utility model, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the preferred embodiment of the present utility model has been described in detail, the present utility model is not limited to the embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (10)
1. The bidirectional charging and discharging system of the electric automobile is characterized by comprising an alternating current plug, a bidirectional current conversion module, a direct current voltage conversion module, a charging and discharging control device, a high-voltage contact device, a low-voltage relay, a charging gun, a battery pack, a vehicle control device and a vehicle socket, wherein the alternating current end of the bidirectional current conversion module is connected with the alternating current plug, the direct current end of the bidirectional current conversion module is connected with the high-voltage contact device of the charging gun through the high-voltage contact device, the direct current end of the bidirectional current conversion module is also connected with the low-voltage contact device of the charging gun through the direct current voltage conversion module, the high-voltage contact device and the low-voltage relay are all connected with the charging and discharging control device, the charging and discharging control device is also connected with the communication interface of the charging gun, the charging gun is matched with the vehicle socket, the high-voltage interface of the vehicle socket is connected with the battery pack, and the low-voltage interface of the vehicle socket is also connected with the vehicle control device.
2. The bi-directional charging and discharging system of an electric vehicle according to claim 1, wherein: the bidirectional current conversion module is a bidirectional AC-DC converter.
3. The bi-directional charging and discharging system of an electric vehicle according to claim 1, wherein: the direct-current voltage conversion module is a DC-DC converter.
4. The bi-directional charging and discharging system of an electric vehicle according to claim 1, wherein: the high-voltage contactor comprises a positive electrode contactor and a negative electrode contactor, the direct-current positive end of the bidirectional current conversion module is connected with the positive end of the high-voltage interface of the charging gun through the positive electrode contactor, and the direct-current negative end of the bidirectional current conversion module is connected with the high-voltage interface negative end of the charging gun through the negative electrode contactor.
5. The bi-directional charging and discharging system of an electric vehicle according to claim 1, wherein: the low-voltage relay comprises a positive relay and a negative relay, wherein the output positive end of the direct-current voltage conversion module is connected with the positive end of the low-voltage interface of the charging gun through the positive relay, and the output negative end of the direct-current voltage conversion module is connected with the low-voltage interface negative end of the charging gun through the negative relay.
6. The bi-directional charging and discharging system of an electric vehicle according to claim 1, wherein: the electric automobile bidirectional charge and discharge system further comprises a leakage detection module, wherein the leakage detection module is used for detecting whether leakage exists between the alternating current plug and the bidirectional current conversion module, and the leakage detection module is connected with the charge and discharge control device.
7. The bi-directional charging and discharging system of an electric vehicle according to claim 1, wherein: the bidirectional charging and discharging system of the electric automobile further comprises an overcurrent detection module, wherein the overcurrent detection module is used for detecting whether overcurrent exists between the bidirectional current conversion module and the high-voltage contactor, and the overcurrent detection module is connected with the charging and discharging control device.
8. The bidirectional charge and discharge system for an electric vehicle according to claim 6 or 7, wherein: the electric automobile bidirectional charge and discharge system further comprises an alarm module, and the alarm module is connected with the charge and discharge control device.
9. The bi-directional charging and discharging system of an electric vehicle according to claim 8, wherein: the alarm module comprises at least one of an indicator lamp, a buzzer and a voice prompt unit.
10. The bi-directional charging and discharging system of an electric vehicle according to claim 1, wherein: the electric automobile bidirectional charge and discharge system further comprises a wireless communication module, wherein the wireless communication module is connected with the charge and discharge control device and is used for communicating with a user terminal or a cloud server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320442180.3U CN219505859U (en) | 2023-03-09 | 2023-03-09 | Bidirectional charging and discharging system of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320442180.3U CN219505859U (en) | 2023-03-09 | 2023-03-09 | Bidirectional charging and discharging system of electric automobile |
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| CN219505859U true CN219505859U (en) | 2023-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118636712A (en) * | 2024-08-19 | 2024-09-13 | 比亚迪股份有限公司 | Vehicle charging device and method and vehicle |
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- 2023-03-09 CN CN202320442180.3U patent/CN219505859U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118636712A (en) * | 2024-08-19 | 2024-09-13 | 比亚迪股份有限公司 | Vehicle charging device and method and vehicle |
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