CN216904342U - Novel charging circuit of pure electric passenger vehicle - Google Patents
Novel charging circuit of pure electric passenger vehicle Download PDFInfo
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- CN216904342U CN216904342U CN202123293755.XU CN202123293755U CN216904342U CN 216904342 U CN216904342 U CN 216904342U CN 202123293755 U CN202123293755 U CN 202123293755U CN 216904342 U CN216904342 U CN 216904342U
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
A novel charging circuit of a pure electric passenger vehicle relates to the technical field of pure electric passenger vehicles and solves the problems that a vehicle-mounted alternating current charger in the prior art is poor in charging effect, cannot meet the use requirements of an electric vehicle and the like, and comprises a direct current charging pile, an electric vehicle power supply, a plurality of electric vehicle loads, a quick charging contactor, a main positive contactor, a pre-charging resistor, a pre-charging contactor, a plurality of fuses and a load contactor, wherein the direct current charging pile is connected with the electric vehicle power supply; according to the novel charging circuit, after a vehicle-mounted charger is omitted, the space of a front cabin for arranging high-voltage devices is enlarged, and the weight of the whole vehicle is reduced; the whole vehicle design is simpler and more flexible; the vehicle purchasing configuration of the consumer is more flexible, and the selectivity is larger; the charging equipment supplier focuses more on the direct current charging service, and the business model is more flexible.
Description
Technical Field
The utility model relates to the technical field of pure electric passenger vehicles, in particular to a novel charging circuit of a pure electric passenger vehicle.
Background
Along with the development trend of pure electric passenger cars, the vehicle-mounted alternating current charger has the following problems:
1. some end users rarely use on-board ac chargers and ac charging equipment, such as: taxies and network reservation cars are provided with no fixed parking spaces, and alternating current charging equipment is hardly used;
2. the failure rate of the vehicle-mounted alternating current charger is extremely high, and once a problem occurs, customer complaints are easily caused, so that the brand image is damaged.
According to pure electronic passenger car development trend at present, high-end passenger car continuation of the journey mileage satisfies 500 kilometers and above at least, and battery system's electric quantity is also bigger and bigger, reaches more than 80kWh at least, uses on-vehicle alternating current charging equipment to charge, and the customer experience of charging is extremely poor, and a night of charging, the vehicle also can't realize fully filling, and the alternating current charging function is unpractical. The following technical problems are specifically present:
1. for part of car purchasing customers (such as online car booking drivers), in the actual use process, the vehicle-mounted alternating current charger cannot be applied, the car purchasing cost of a purchaser is increased, and after the vehicle-mounted alternating current charger is cancelled, the alternating current charging wire bundle, the alternating current charging socket and the alternating current charging pile can be cancelled at the same time, so that the car purchasing cost of the consumer is reduced, and the cost is about 3000 yuan to 5000 yuan;
2. at present, the on-vehicle machine of charging of 6.6kW belongs to trade mainstream level, and 11kW, the on-vehicle machine of charging of 22kW still is in the laboratory stage, does not spread on a large scale in current market, and along with electric automobile continuation of the journey mileage extension, power battery electric quantity increases rapidly, and the on-vehicle machine of charging of 6.6kW has been unable to satisfy electric automobile's development trend, and to this, the problem of solving consumer low-power charging needs the novel charging mode of innovation.
3. Due to the technical characteristics of the vehicle-mounted alternating current charger, the failure rate is high, the phenomenon that consumers complain about caused by the fact that the vehicle-mounted alternating current charger fails often occurs, and in order to solve the problem of customer complaining, the vehicle-mounted alternating current charger needs to be separated from a vehicle, a low-power direct current charger (capable of being charged through a direct current charging interface) is provided, so that the problem of customer complaining is effectively solved, and the problem of the failure of the charger can be timely processed and replaced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel charging circuit of a pure electric passenger vehicle, aiming at solving the problems that a vehicle-mounted alternating current charger adopted in the prior art is poor in charging effect, a 6.6kW vehicle-mounted alternating current charger cannot meet the use requirements of an electric vehicle and the like.
A novel charging circuit of a pure electric passenger vehicle comprises a direct-current charging pile, an electric vehicle power supply, a plurality of electric vehicle loads, a quick charging contactor, a main positive contactor, a pre-charging resistor, a pre-charging contactor, a plurality of fuses and a load contactor;
the positive electrode of the direct current charging pile is respectively connected with the positive electrode of the electric automobile power supply, one end of the main positive contactor and one end of the pre-charging resistor through the quick charging contactor;
the other end of the main positive contactor is respectively connected with one end of the pre-charging contactor, one end of the first fuse, one end of the load contactor and the positive electrode of the fourth electric automobile load;
the other end of the pre-charging contactor is connected with the other end of the pre-charging resistor;
the other end of the first fuse is connected with the anode of a first electric automobile load;
the other end of the load contactor is connected with one end of the second fuse and one end of the third fuse respectively;
the other end of the second fuse is connected with the positive electrode of a second electric automobile load;
the other end of the third fuse is connected with the positive electrode of a third electric automobile load;
and the negative electrodes of the direct current charging piles are respectively connected with the negative electrode of the electric automobile power supply, the negative electrode of the first electric automobile load, the negative electrode of the second electric automobile load, the negative electrode of the third electric automobile load and the negative electrode of the fourth electric automobile load.
The utility model has the beneficial effects that: the charging circuit provided by the utility model has the following advantages:
1. after a vehicle-mounted alternating current charger is cancelled, the cost of the whole vehicle can be reduced by about 1000 yuan (preliminary evaluation of technology); the cost can effectively improve the price competitive advantage of the vehicle enterprises;
2. after a vehicle-mounted charger is cancelled, the space of a front cabin for arranging high-voltage devices is enlarged, and the weight of the whole vehicle is reduced;
3. after a vehicle-mounted charger is eliminated, the design of the whole vehicle is simpler and more flexible;
4. after a vehicle-mounted charger is cancelled, the vehicle purchasing configuration of a consumer is more flexible, and the selectivity is larger;
5. after the vehicle-mounted charger is cancelled, a charging equipment supplier focuses on direct-current charging service more, and the business mode is more flexible.
Drawings
Fig. 1 is a circuit diagram of a novel charging circuit of a pure electric passenger car according to the present invention.
In the figure: 1. the direct current charging pile comprises a direct current charging pile body, 2, an electric automobile power supply, 3, a first electric automobile load, 4, a second electric automobile load, 5, a third electric automobile load, 6, a fourth electric automobile load, 7, a quick charging contactor, 8, a main positive contactor, 9, a pre-charging resistor, 10, a pre-charging contactor, 11, a first fuse, 12, a load contactor, 13, a second fuse, 14, a third fuse, 15 and a fourth fuse.
Detailed Description
The present embodiment is described with reference to fig. 1, and a novel charging circuit for a pure electric passenger vehicle, as shown in fig. 1 (high voltage system principle), includes a dc charging pile 1, an electric vehicle power supply 2, a plurality of electric vehicle loads, a quick charging contactor 7, a main positive contactor 8, a pre-charging resistor 9, a pre-charging contactor 10, a plurality of fuses, and a load contactor 12;
the positive electrode of the direct current charging pile 1 is respectively connected with the positive electrode of the electric automobile power supply 2, one end of a main positive contactor 8 and one end of a pre-charging resistor 9 through a quick charging contactor 7;
the other end of the main positive contactor 8 is respectively connected with one end of a pre-charging contactor 10, one end of a first fuse 11, one end of a load contactor 12 and the positive electrode of a fourth electric automobile load 6;
the other end of the pre-charging contactor 10 is connected with the other end of the pre-charging resistor 9;
the other end of the first fuse 11 is connected with the positive electrode of the first electric automobile load 3;
the other end of the load contactor 12 is connected with one end of a second fuse 13 and one end of a third fuse 14 respectively;
the other end of the second fuse 13 is connected with the positive electrode of the second electric automobile load 4;
the other end of the third fuse 14 is connected with the positive electrode of a third electric automobile load 5;
the negative pole of direct current charging pile 1 is connected for the negative pole of electric automobile power 2, the negative pole of first electric automobile load 3, the negative pole of second electric automobile load 4, the negative pole of third electric automobile load 5 and the negative pole of fourth electric automobile load 6 respectively.
In the present embodiment, after the vehicle-mounted ac charger is removed, in order to satisfy the charging requirements of different customers, a low-power dc charger (the vehicle-mounted ac charger is removed, and the dc charger is configured) is configured as a dc power supply for supplying power. The system is divided into 7kW/11kW/22kW and the like according to different requirements of customers, and the customers can select according to the requirements by adopting different forms of configuration.
The low-power direct current charger adopts a special shape, can be correspondingly matched according to the color of a vehicle type, has the input voltage compatible with three-phase 380V and single-phase 220V, is provided with 10A and 16A adapters simultaneously, is connected and charged according to the actual requirements of customers, has an output port adopting a national standard GB/T20234 high-voltage direct current output interface, and is simple and convenient for the operation of the customers.
The charging circuit according to the present embodiment, which is researched and developed in the electric vehicle market, has the following functions in view of the actual needs of consumers:
the charging control function: the low-power direct-current charger has an automatic charging control function, and has obvious operation prompt information if manual charging control is adopted;
the communication function is as follows: the low-power direct-current charger has a function of communicating with the BMS or the VCU, judges whether the low-power direct-current charger is correctly connected with the power battery or not, and obtains BMS or VCU charging parameters and charging real-time data; the communication protocol between the low-power direct current charger and the BMS or VCU is in accordance with the regulation of GB/T27930;
the Bluetooth communication function: the low-power direct-current charger has a Bluetooth communication function with a user APP;
4G networking function: the low-power direct current charger is provided with a 4G network module, and a user can establish connection with a product through a wireless network to obtain real-time information of the product;
WIFI communication function: the low-power direct-current charger realizes a wireless networking function in a WIFI networking mode on the charging pile under the condition that 4G is not networked;
APP sweeps yard and opens the function on line: the low-power direct-current charger is connected with a user APP through 4G/WIFI, so that the on-line starting and stopping function of the charger is realized;
APP bluetooth off-line opens stops function: a user establishes connection with a low-power direct-current charger through a Bluetooth application program to realize the on-line starting and stopping function of the charger;
VIN automatic identification start function: after the low-power direct current charger supports one-time identification of VIN, the function of subsequent plug and charge is realized;
face recognition start function: the low-power direct-current charger supports the face recognition function, and charging is started after face recognition verification is passed;
fingerprint identification starts function: the low-power direct-current charger supports a fingerprint identification function, and charging is started after fingerprint identification verification is passed;
the human-computer interaction function: the low-power direct-current charger should display the following status information: standby, charging, warning, SOC, charging voltage, charging current, charging power, charged time, charged amount, etc.;
sharing the lease function: in the idle period of the parking place, a user can share the low-power direct-current charger APP, and other users can recognize and charge the parking place on the charging map;
high-pressure relief function: the output loop of the low-power direct current charger has the functions of discharge control and detection;
output loop fuse: the low-power direct-current charger has a secondary protection function and a fuse;
remote OTA upgrade function: the low-power direct-current charger has a remote OTA upgrading function;
data storage function: the low-power direct current charger should have at least 10000 fault records stored;
a fault diagnosis function: the low-power direct-current charger has wireless and wired fault diagnosis functions;
insulating detection function: the low-power direct-current charger has the function of carrying out insulation detection on a direct-current output loop;
and (4) locking function: the gun head of the low-power direct-current charger is provided with a locking device, and the gun head can be locked with a charger shell and a charging interface;
the metering function is as follows: the low-power direct-current charger has the function of metering the charging electric quantity;
an emergency stop function: the low-power direct-current charger is provided with an emergency stop device, and when the emergency stop device is started, the power supply input and the direct-current output can be cut off.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.
Claims (1)
1. The utility model provides a novel charging circuit of pure electric passenger car, characterized by: the system comprises a direct current charging pile (1), an electric vehicle power supply (2), a plurality of electric vehicle loads, a quick charging contactor (7), a main positive contactor (8), a pre-charging resistor (9), a pre-charging contactor (10), a plurality of fuses and a load contactor (12);
the positive electrode of the direct current charging pile (1) is respectively connected with the positive electrode of the electric automobile power supply (2), one end of a main positive contactor (8) and one end of a pre-charging resistor (9) through a quick charging contactor (7);
the other end of the main positive contactor (8) is respectively connected with one end of a pre-charging contactor (10), one end of a first fuse (11), one end of a load contactor (12) and the positive electrode of a fourth electric automobile load (6);
the other end of the pre-charging contactor (10) is connected with the other end of the pre-charging resistor (9);
the other end of the first fuse wire (11) is connected with the positive electrode of a first electric automobile load (3);
the other end of the load contactor (12) is connected with one end of a second fuse (13) and one end of a third fuse (14) respectively;
the other end of the second fuse (13) is connected with the anode of a second electric automobile load (4);
the other end of the third fuse (14) is connected with the positive electrode of a third electric automobile load (5);
the negative pole of the direct current charging pile (1) is respectively connected with the negative pole of an electric automobile power supply (2), the negative pole of a first electric automobile load (3), the negative pole of a second electric automobile load (4), the negative pole of a third electric automobile load (5) and the negative pole of a fourth electric automobile load (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123293755.XU CN216904342U (en) | 2021-12-26 | 2021-12-26 | Novel charging circuit of pure electric passenger vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123293755.XU CN216904342U (en) | 2021-12-26 | 2021-12-26 | Novel charging circuit of pure electric passenger vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216904342U true CN216904342U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123293755.XU Active CN216904342U (en) | 2021-12-26 | 2021-12-26 | Novel charging circuit of pure electric passenger vehicle |
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| CN (1) | CN216904342U (en) |
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2021
- 2021-12-26 CN CN202123293755.XU patent/CN216904342U/en active Active
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