CN211731070U - Charging device for starting battery power shortage of electric automobile - Google Patents
Charging device for starting battery power shortage of electric automobile Download PDFInfo
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- CN211731070U CN211731070U CN202020290755.0U CN202020290755U CN211731070U CN 211731070 U CN211731070 U CN 211731070U CN 202020290755 U CN202020290755 U CN 202020290755U CN 211731070 U CN211731070 U CN 211731070U
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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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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T10/72—Electric energy management in electromobility
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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
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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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model discloses a charging device for the power shortage of a starting battery of an electric automobile, which comprises an external charging device, a vehicle-mounted charging and discharging device and a vehicle-mounted charging interface; the vehicle-mounted charging and discharging device comprises a vehicle-mounted charger, a power battery, a DC/DC power converter, a starting battery and a battery management system BMS, wherein a charging auxiliary power supply output end is arranged on external charging equipment, a charging maintenance power supply output end is arranged in a vehicle-mounted charging interface, a built-in auxiliary power supply output end is arranged on the vehicle-mounted charger, and a working power supply end connected with the starting battery, a normal charging power supply end connected with the built-in auxiliary power supply output end and a charging maintenance power supply end connected with the charging maintenance power supply output end are connected to the battery management system; the output end of the charging auxiliary power supply can output 12V direct-current voltage, power is supplied to a chip in the battery management system BMS, the chip is awakened to complete a communication function, alternating current can be supplied to the vehicle-mounted charger, and the charging failure phenomenon caused by the dormancy of the battery management system BMS is eliminated.
Description
Technical Field
The utility model relates to a, especially, relate to an electric automobile's start battery is charging device for insufficient voltage.
Background
Based on the current electric principle and the charging control strategy of starting battery charging on the electric automobile, under the condition that the starting battery of the electric automobile is insufficient, the electric automobile can cause the battery management system BMS to be in power shortage and sleep, so that the charging control cannot be carried out. Specifically, for example, according to the first part of the latest national standard GB/T18487.1-2015 electric vehicle conduction charging system — an electric vehicle executed according to general requirements, a CP signal of a charging pile or a charging gun to a vehicle can be used to wake up a vehicle battery management system BMS, but the battery management system BMS is still powered by a starting battery on the electric vehicle, and under the condition that the starting battery of the electric vehicle is insufficient, the battery management system BMS is in a power shortage state, so that the battery management system BMS cannot smoothly receive the CP signal, and the battery management system BMS cannot start and control a vehicle-mounted charger to operate. Although a 12V auxiliary power supply is arranged in the vehicle-mounted charger, the auxiliary power supply is not connected with the battery management system BMS, so that the battery management system BMS cannot control the charging pile or the charging gun to be connected with the vehicle-mounted charger, and the vehicle-mounted charger cannot receive 220V alternating current provided by the charging power supply, and finally the starting battery and the power battery cannot start the charging function, which becomes a defect in the charging technology of the electric vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a start battery insufficient voltage of electric automobile that causes battery management system BMS dormancy under the start battery insufficient voltage circumstances still can accomplish whole car charging task uses charging device is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: the charging device for the power shortage of the starting battery of the electric automobile comprises external charging equipment, a vehicle-mounted charging and discharging device arranged in the electric automobile and a vehicle-mounted charging interface used for connecting the external charging equipment and the vehicle-mounted charging and discharging device; the vehicle-mounted charging and discharging device comprises a vehicle-mounted charger, a power battery, a DC/DC power converter, a starting battery and a battery management system BMS which are respectively arranged in a grounding way, the battery management system BMS is respectively connected with the vehicle-mounted charger and the external charging equipment in a signal way, the external charging equipment is provided with a charging auxiliary power output end, a charging maintenance power output end used for transmitting the electric energy output by the charging auxiliary power output end to the battery management system BMS is arranged in the vehicle-mounted charging interface, the vehicle-mounted charger is provided with an internal auxiliary power output end, the battery management system BMS is provided with a working power end, a normal charging power end and a charging maintenance power end in parallel, the working power end is electrically connected to the power output end of the starting battery, the normal charging power end, the charge sustaining power supply terminal is electrically connected to the charge sustaining power supply output terminal.
As an optimized technical scheme, the external charging equipment is set to be a charging pile or a charging gun, a charging control device is arranged in the charging pile or the charging gun, and the output end of the charging auxiliary power supply is arranged on the output side of the charging control device.
As a preferable technical solution, the output end voltage of the output end of the charging auxiliary power supply is +12V dc voltage, and the output end power is 5W.
As an improvement to the technical scheme, the output end voltage of the output end of the built-in auxiliary power supply is +12V direct current voltage, and the output end power is 50W.
Due to the adoption of the technical scheme, the charging device for the power shortage of the starting battery of the electric automobile comprises external charging equipment, a vehicle-mounted charging and discharging device arranged in the electric automobile and a vehicle-mounted charging interface used for connecting the external charging equipment and the vehicle-mounted charging and discharging device; the vehicle-mounted charging and discharging device comprises a vehicle-mounted charger, a power battery, a DC/DC power converter, a starting battery and a battery management system BMS which are respectively arranged in a grounding way, the battery management system BMS is respectively connected with the vehicle-mounted charger and the external charging equipment in a signal way, the external charging equipment is provided with a charging auxiliary power output end, a charging maintenance power output end used for transmitting the electric energy output by the charging auxiliary power output end to the battery management system BMS is arranged in the vehicle-mounted charging interface, the vehicle-mounted charger is provided with an internal auxiliary power output end, the battery management system BMS is provided with a working power end, a normal charging power end and a charging maintenance power end in parallel, the working power end is electrically connected to the power output end of the starting battery, the normal charging power end, the charging maintenance power supply end is electrically connected to the charging maintenance power supply output end; the utility model discloses following beneficial effect has: be equipped with the auxiliary power supply output that charges in external battery charging outfit, can export 12V's direct current voltage, as battery management system BMS's auxiliary starting power supply, a chip power supply for in giving battery management system BMS, and then awaken up the battery management system BMS who gets into the dormancy state because of starting battery insufficient voltage, realize under the battery insufficient voltage state of starting, normally start battery management system BMS, accomplish its and external battery charging outfit, on-vehicle charging and discharging device's handshake communication, make the on-vehicle machine that charges of 220V alternating current normal supply, thereby accomplish whole car charging process, the guarantee of charging to on-vehicle charging and discharging device has been improved, the charge failure phenomenon because of battery management system BMS dormancy leads to the fact has been eliminated.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a circuit schematic diagram of an embodiment of the present invention;
in the figure: 1-external charging equipment; 11-a charge control device; 12-residual current protection means; 13-charging auxiliary power supply output terminal; 2-vehicle charging interface; 21-a charge sustaining power supply output; 3-vehicle charging and discharging device; 31-vehicle charger; 311-built-in auxiliary power supply output terminal; 32-a power cell; 33-DC/DC power converter; 34-starting the battery; 35-battery management system BMS; 351-working power supply end; 352-normal charging power supply terminal; 353-charge maintenance power supply terminal.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1, the charging device for the starting battery of the electric vehicle with power shortage can be used when the starting battery 34 of the electric vehicle has power shortage and the battery management system BMS35 cannot obtain the starting operating voltage. The device comprises external charging equipment 1, a vehicle-mounted charging and discharging device 3 arranged in the electric automobile and a vehicle-mounted charging interface 2 used for connecting the external charging equipment 1 and the vehicle-mounted charging and discharging device 3. The external charging equipment 1 is set to be a charging pile or a charging gun, and a charging control device 11 is arranged in the charging pile or the charging gun. The charging pile and the charging control device 11 and the residual current protection device 12 inside the charging pile are all well known to those skilled in the art, and are not described in detail herein.
The vehicle-mounted charging and discharging device 3 comprises a vehicle-mounted charger 31, a power battery 32, a DC/DC power converter 33, a starting battery 34 and a battery management system BMS35 which are respectively arranged in a grounding mode, wherein the battery management system BMS35 is respectively in signal connection with the vehicle-mounted charger 31 and the external charging equipment 1, and information exchange between the battery management system BMS35 and the vehicle-mounted charger 31 and the external charging equipment 1 is realized. And the parts are respectively connected with a PE ground wire arranged in the vehicle-mounted charging and discharging device 3, so that safe grounding is realized, and the safe operation of the system is ensured.
The external charging equipment 1 is provided with a charging auxiliary power supply output end 13, and the charging auxiliary power supply output end 13 is arranged on the output side of the charging control device 11. The vehicle-mounted charging interface 2 is internally provided with a charging maintenance power supply output end 21 for transmitting the electric energy output by the charging auxiliary power supply output end 13 to the battery management system BMS35, when in use, the charging auxiliary power supply output end 13 is electrically connected with the charging maintenance power supply output end 21 through a connecting wire, and then the external electric energy is transmitted to the battery management system BMS 35.
In this embodiment, the vehicle-mounted charger 31 is provided with a built-in auxiliary power output terminal 311, the battery management system BMS35 is provided in parallel with an operating power terminal 351, a normal charging power terminal 352 and a charging maintenance power terminal 353, the operating power terminal 351 is electrically connected to the power output terminal of the starting battery 34, the normal charging power terminal 352 is electrically connected to the built-in auxiliary power output terminal 311, and the charging maintenance power terminal 353 is electrically connected to the charging maintenance power output terminal 21. The output end voltage of the charging auxiliary power supply output end 13 is +12V direct current voltage, and the output end power is 5W; the output end voltage of the output end 311 of the built-in auxiliary power supply is +12V direct current voltage, and the output end power is 50W.
In this embodiment, the charging auxiliary power output end 13 is arranged on the charging pile or the charging gun to form a +12V auxiliary power supply, and the power supply is a normal power supply. When the electric vehicle needs to be charged, the electric vehicle is plugged in a gun for charging, an auxiliary voltage of +12V is connected to the battery management system BMS35 in the electric vehicle through the vehicle-mounted charging interface 2 (actually, through the matching of a lead in the interface and the charging maintenance power output end 21), the power supply power is about 5W, a basic operation voltage is provided for a chip in the battery management system BMS35, and the control process is executed according to the national standard GB/T18487.1-2015, that is, the battery management system BMS35 detects the states of the vehicle and the charging pile or the charging gun at first, when the charging requirement is met, a switch S2 is closed, and then the charging pile or the charging gun closes a charging switch K1 and a charging switch K2, and 220V alternating current is transmitted to the vehicle-mounted charger 31; at this moment with on-vehicle machine 31 is connected built-in auxiliary power supply output 311 exportable +12V auxiliary voltage (power can reach 50W), and this voltage gives the relevant electrical part of whole car (contain battery management system BMS35) power supply again, at this moment battery management system BMS35 can close the contactor of battery package, accomplishes power battery 32's charging, and simultaneously, DC/DC power converter 33 can with power battery 32 or on-vehicle machine 31's high tension electricity converts + 12V's low tension into, gives insufficient voltage again start battery 34 charges.
The utility model discloses be equipped with the auxiliary power supply output 13 that charges in external battery charging outfit 1, can export + 12V's direct current voltage, as battery management system BMS 35's auxiliary starting power supply, a chip power supply in for battery management system BMS35, and then awaken up the battery management system BMS35 that gets into the dormant state because of starting 34 insufficient voltage of battery, realize under 34 insufficient voltage of starting battery, normally start 34 management system BMS of battery, accomplish its and external battery charging outfit 1, on-vehicle charging and discharging device 3's the communication of shaking hands, make the on-vehicle 31 that can normally supply with of 220V alternating current, thereby accomplish whole car charging process, the guarantee of charging to on-vehicle charging and discharging device 3 has been improved, the charge failure phenomenon that causes because of battery management system BMS35 dormancy has been eliminated.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The charging device for the power shortage of the starting battery of the electric automobile comprises external charging equipment, a vehicle-mounted charging and discharging device arranged in the electric automobile and a vehicle-mounted charging interface used for connecting the external charging equipment and the vehicle-mounted charging and discharging device; the vehicle-mounted charging and discharging device comprises a vehicle-mounted charger, a power battery, a DC/DC power converter, a starting battery and a battery management system BMS, wherein the vehicle-mounted charger, the power battery, the DC/DC power converter, the starting battery and the battery management system BMS are respectively arranged in a grounding mode, and the battery management system BMS is respectively connected with the vehicle-mounted charger and the external charging equipment through signals and is characterized in that: the external charging equipment is provided with a charging auxiliary power output end, the vehicle-mounted charging interface is internally provided with a charging maintaining power output end used for transmitting electric energy output by the charging auxiliary power output end to the battery management system BMS, the vehicle-mounted charger is provided with a built-in auxiliary power output end, the battery management system BMS is parallelly provided with a working power end, a normal charging power end and a charging maintaining power end, the working power end is electrically connected to the electric power output end of the starting battery, the normal charging power end is electrically connected to the built-in auxiliary power output end, and the charging maintaining power end is electrically connected to the charging maintaining power output end.
2. A starting battery power-loss charging apparatus for an electric vehicle according to claim 1, wherein: the external charging equipment is set as a charging pile or a charging gun, a charging control device is arranged in the charging pile or the charging gun, and the output end of the charging auxiliary power supply is arranged on the output side of the charging control device.
3. A starting battery power-loss charging apparatus for an electric vehicle according to claim 1, wherein: the output end voltage of the output end of the charging auxiliary power supply is +12V direct-current voltage, and the power of the output end is 5W.
4. A starting battery power-loss charging apparatus for an electric vehicle according to claim 1, wherein: the output end voltage of the output end of the built-in auxiliary power supply is +12V direct current voltage, and the power of the output end is 50W.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020290755.0U CN211731070U (en) | 2020-03-11 | 2020-03-11 | Charging device for starting battery power shortage of electric automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020290755.0U CN211731070U (en) | 2020-03-11 | 2020-03-11 | Charging device for starting battery power shortage of electric automobile |
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| CN211731070U true CN211731070U (en) | 2020-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013970A (en) * | 2021-01-28 | 2021-06-22 | 浙江合众新能源汽车有限公司 | Electric automobile battery feed recovery system |
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2020
- 2020-03-11 CN CN202020290755.0U patent/CN211731070U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013970A (en) * | 2021-01-28 | 2021-06-22 | 浙江合众新能源汽车有限公司 | Electric automobile battery feed recovery system |
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