CN207772914U - Charging equipment of electric automobile and accumulation power supply vehicle - Google Patents
Charging equipment of electric automobile and accumulation power supply vehicle Download PDFInfo
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- CN207772914U CN207772914U CN201721518880.7U CN201721518880U CN207772914U CN 207772914 U CN207772914 U CN 207772914U CN 201721518880 U CN201721518880 U CN 201721518880U CN 207772914 U CN207772914 U CN 207772914U
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- 238000009825 accumulation Methods 0.000 title abstract 2
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims description 56
- 238000004146 energy storage Methods 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims 2
- 238000003032 molecular docking Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000010365 information processing 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
- Y02T10/72—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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The utility model discloses a kind of charging equipment of electric automobile and accumulation power supply vehicle,Wherein,Charging equipment of electric automobile includes charging circuit,BMS control circuits,DC/DC circuits,Switching circuit,Discharge circuit and governor circuit,The charging circuit is used to provide the power supply of the BMS control circuits,The BMS control circuits are used to provide the power supply of the DC/DC circuits,Output is to the switching circuit after the DC/DC circuits are used to shunt input power constant pressure,The multichannel equal-wattage power supply progress various combination that the switching circuit is used to control the DC/DC circuits is assigned to discharge circuit,The governor circuit passes through CAN communication agreement and the BMS control circuits,DC/DC circuits and the discharge circuit carry out signal communication,And,Being switched on or off for the switching circuit, which is controlled, according to charge power needed for electric vehicle exports corresponding charge power,Achieve the purpose that power intelligent distributes.
Description
Technical Field
The utility model relates to an electric automobile technical field, in particular to electric automobile battery charging outfit and energy storage supply vehicle.
Background
At present, electric automobile develops rapidly, new energy automobile is widely popularized, charging equipment's user demand increases simultaneously, it is current because different electric automobile has different battery capacity and the multiplying power that charges for electric automobile is different to charging equipment power demand, current charging equipment output is single however, if charging equipment output is less, so when the car that possess the large capacity battery charges, the charge rate is slow, the time spent is long, if charging equipment output is great, so when the car that gives the small capacity battery charges, charging equipment power utilization rate and conversion efficiency are low, the resource waste. In order to meet the charging requirements of various electric vehicles, the effective distribution of the power of the charging equipment needs to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric automobile battery charging outfit aims at solving the not intelligent problem of distribution of battery charging outfit power.
To achieve the above object, the charging device for electric vehicle according to the present invention comprises a charging circuit, a BMS control circuit, a DC/DC circuit, a switching circuit, a discharging circuit and a main control circuit, wherein a power output terminal of the charging circuit is connected to a power input terminal of the BMS control circuit, a power output terminal of the BMS control circuit is connected to a power input terminal of the DC/DC circuit, a power output terminal of the DC/DC circuit is connected to a power input terminal of the switching circuit, a power output terminal of the switching circuit is connected to a power input terminal of the discharging circuit, a signal terminal of the BMS control circuit is connected to a first signal terminal of the main control circuit, a signal terminal of the DC/DC circuit is connected to a second signal terminal of the main control circuit, a signal terminal of the discharging circuit is connected to a third signal terminal of the main control circuit, the controlled end of the switch circuit is connected with the control end of the main control circuit;
the charging circuit is used for providing a power supply of the BMS control circuit, the BMS control circuit is used for providing a power supply of the DC/DC circuit, the DC/DC circuit is used for shunting an input power supply at a constant voltage and then outputting the power supply to the switching circuit, the switching circuit is used for controlling multiple paths of same power supplies of the DC/DC circuit to be distributed to the discharging circuit in different combinations, the discharging circuit is used for providing a power supply of an electric vehicle, and the main control circuit is in signal communication with the BMS control circuit, the DC/DC circuit and the discharging circuit through a CAN communication protocol and controls the switching on or off of the switching circuit.
Preferably, the charging circuit includes a dc charging interface and a first switch, a positive power output terminal of the dc charging interface is connected to a first terminal of the first switch, a negative power output terminal of the dc charging interface is connected to a negative power input terminal of the BMS control circuit, a second terminal of the first switch is connected to a positive power input terminal of the BMS control circuit, a controlled terminal of the first switch is connected to a control terminal of the dc charging interface, the dc charging interface is used for providing battery power of the BMS control circuit, the first switch is in a normally open state, and when the charging circuit works, the first switch is in a normally closed state.
Preferably, the BMS control circuit includes a BMS unit and a second switch, the signal terminal of the BMS unit is the signal terminal of the BMS control circuit, the power input terminal of the BMS unit is the power input terminal of the BMS control circuit, the first terminal of the second switch is connected with the positive power output terminal of the BMS unit, a second terminal of the second switch is connected to a positive power supply input of the DC/DC circuit, the negative power output terminal of the BMS unit is connected to the negative power input terminal of the DC/DC circuit, the controlled end of the second switch is connected with the control end of the BMS unit, the BMS unit is used for storing the electric energy of the electric automobile charging equipment and detecting the working current, voltage and temperature parameters of the storage battery, the BMS unit can also be used for carrying out data communication with the main control circuit and controlling the second switch to be switched on or switched off according to the signals of the main control circuit.
Preferably, the DC/DC circuit includes a first DC/DC unit, a second DC/DC unit, a third DC/DC unit, a fourth DC/DC unit, a fifth DC/DC unit, a sixth DC/DC unit, a seventh DC/DC unit, an eighth DC/DC unit;
a positive supply input of the first DC/DC unit, a positive supply input of the second DC/DC unit, a positive supply input of the third DC/DC unit, a positive supply input of the fourth DC/DC unit, a positive supply input of the fifth DC/DC unit, a positive supply input of the sixth DC/DC unit, a positive supply input of the seventh DC/DC unit and a positive supply input of the eighth DC/DC unit are interconnected, a connection node of which is the positive supply input of the DC/DC circuit, a negative supply input of the first DC/DC unit, a negative supply input of the second DC/DC unit, a negative supply input of the third DC/DC unit, a negative supply input of the fourth DC/DC unit, a negative supply input of the fifth DC/DC unit, The negative power supply input terminal of the sixth DC/DC unit, the negative power supply input terminal of the seventh DC/DC unit and the negative power supply input terminal of the eighth DC/DC unit are interconnected, and the connection node thereof is the negative power supply input terminal of the DC/DC circuit;
a positive power supply output of the first DC/DC unit, a positive power supply output of the second DC/DC unit, a positive power supply output of the third DC/DC unit and a positive power supply output of the fourth DC/DC unit are interconnected, the connection nodes of which are the first positive power supply output of the DC/DC circuit, the negative power supply output of the first DC/DC unit, the negative power supply output of the second DC/DC unit, the negative power supply output of the third DC/DC unit and the negative power supply output of the fourth DC/DC unit are interconnected, the connection nodes of which are the first negative power supply output of the DC/DC circuit, the positive power supply output of the fifth DC/DC unit, the positive power supply output of the sixth DC/DC unit, the positive power supply output of the seventh DC/DC unit and the positive power supply output of the eighth DC/DC unit are interconnected, the connection node of the positive power supply output terminal is a second positive power supply output terminal of the DC/DC circuit, the negative power supply output terminal of the fifth DC/DC unit, the negative power supply output terminal of the sixth DC/DC unit, the negative power supply output terminal of the seventh DC/DC unit, and the negative power supply output terminal of the eighth DC/DC unit are interconnected, and the connection node of the negative power supply output terminal is a second negative power supply output terminal of the DC/DC circuit.
Preferably, the output power of any one of the DC/DC units is constant and 15 kw.
Preferably, the switch circuit comprises a third switch, a fourth switch, a fifth switch and a sixth switch, a first terminal of the third switch is connected to a first terminal of the fifth switch, a connection node thereof is a first positive power input terminal of the switch circuit, a second terminal of the third switch is connected to a first terminal of the sixth switch, a connection node thereof is a second positive power input terminal of the switch circuit, a first terminal of the fourth switch is connected to a first negative power output terminal of the DC/DC circuit, a connection node thereof is a first negative power output terminal of the switch circuit, a second terminal of the fourth switch is connected to a second negative power output terminal of the DC/DC circuit, a connection node thereof is a second negative power output terminal of the switch circuit, a second terminal of the fifth switch is a first positive power output terminal of the switch circuit, the second end of the sixth switch is a second positive power output end of the switch circuit, the controlled end of the third switch is connected with the first control end of the main control circuit, the controlled end of the fourth switch is connected with the second control end of the main control circuit, the controlled end of the fifth switch is connected with the third control end of the main control circuit, the controlled end of the sixth switch is connected with the fourth control end of the main control circuit, and the switch circuit is controlled by the main control circuit to perform different closing or opening operations on the contactor to output electric energy with different powers.
Preferably, the discharge circuit includes a first discharge interface and a second discharge interface, a positive power supply input end of the first discharge interface is a first positive power supply input end of the discharge circuit, a positive power supply output end of the first discharge interface is a first positive power supply output end of the discharge circuit, a positive power supply input end of the second discharge interface is a second positive power supply input end of the discharge circuit, a positive power supply output end of the second discharge interface is a second positive power supply output end of the discharge circuit, the discharge circuit is configured to perform docking charging on an electric vehicle, and any discharge interface CAN also receive charging power information required by the electric vehicle and send the charging power information to the main control circuit through a CAN communication protocol.
Preferably, the main control circuit includes a main control board and a contactor control circuit, the signal terminal of the main control board is the signal terminal of the main control circuit, the control terminal of the contactor control circuit is the control terminal of the main control circuit, the signal terminal of the contactor control circuit is connected with the fourth signal terminal of the main control board, the main control board communicates with the BMS control circuit, the DC/DC circuit and the discharge circuit through a CAN communication protocol and performs data communication and obtains the output terminal current parameter of each circuit, and the main control board obtains the required charging power of the electric vehicle through the discharge circuit and then sends a control signal to the BMS control circuit and the switch circuit to perform output of corresponding power.
Correspondingly, the utility model also provides an energy storage power supply vehicle, which comprises the electric vehicle charging equipment; wherein the charging device of the electric automobile comprises a charging circuit, a BMS control circuit, a DC/DC circuit, a switching circuit, a discharging circuit and a main control circuit, the power output terminal of the charging circuit is connected with the power input terminal of the BMS control circuit, the power output terminal of the BMS control circuit is connected to the power input terminal of the DC/DC circuit, the power supply output terminal of the DC/DC circuit is connected with the power supply input terminal of the switch circuit, the power output end of the switch circuit is connected with the power input end of the discharge circuit, the signal end of the BMS control circuit is connected with the first signal end of the main control circuit, the signal terminal of the DC/DC circuit is connected with the second signal terminal of the main control circuit, the signal end of the discharge circuit is connected with the third signal end of the main control circuit, and the controlled end of the switch circuit is connected with the control end of the main control circuit; wherein,
the charging circuit is used for providing a power supply of the BMS control circuit, the BMS control circuit is used for providing a power supply of the DC/DC circuit, the DC/DC circuit is used for shunting an input power supply at a constant voltage and then outputting the power supply to the switching circuit, the switching circuit is used for controlling multiple paths of same power supplies of the DC/DC circuit to be combined and distributed to the discharging circuit in different ways, the discharging circuit is used for providing a power supply of an electric vehicle, and the main control circuit is in signal communication with the BMS control circuit, the DC/DC circuit and the discharging circuit through a CAN communication protocol and controls the on or off of the switching circuit.
The electric vehicle charging device of the utility model is communicated with the electric vehicle to be charged through the discharging circuit, the main control circuit acquires the charging power signal required by the electric vehicle, processes the signal and sends out a control signal to the BMS control circuit and the switch circuit, controls each contactor to correspondingly close to output the power required by the electric vehicle to charge the electric vehicle, for example, when the power required by the electric vehicle exceeds 60kw, the main control circuit sends out a signal to the BMS control circuit, the BMS control circuit controls the second switch to close, and the main control circuit sends out a control signal to the switch circuit to control the third switch and the fourth switch to close, the two discharging interfaces of the discharging circuit output are 120kw, any discharging interface can charge the electric vehicle with the power demand exceeding 60kw, when the power required by the electric vehicle is less than 60kw, the main control circuit only needs to send out a signal to the BMS control circuit, BMS control circuit control second switch is closed, two discharge interface outputs of discharge circuit are 60kw, and arbitrary discharge interface all can be less than 60 kw's electric automobile charging for the power demand, has realized the intelligent distribution of electric automobile battery charging outfit power like this, has improved battery charging outfit's availability factor simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of functional modules of an embodiment of the electric vehicle charging apparatus of the present invention;
fig. 2 is a schematic circuit diagram of another embodiment of the charging apparatus for electric vehicle of the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an electric automobile battery charging outfit aims at solving the not intelligent problem of current battery charging outfit power distribution, improves the battery charging outfit utilization ratio.
Referring to fig. 1, in an embodiment of the electric vehicle charging apparatus of the present invention, the electric vehicle charging apparatus includes a charging circuit 10, a BMS control circuit 20, a DC/DC circuit 30, a switch circuit 40, a discharge circuit 50 and a main control circuit 60, a power output terminal of the charging circuit 10 is connected to a power input terminal of the BMS control circuit 20, a power output terminal of the BMS control circuit 20 is connected to a power input terminal of the DC/DC circuit 30, a power output terminal of the DC/DC circuit 30 is connected to a power input terminal of the switch circuit 40, a power output terminal of the switch circuit 40 is connected to a power input terminal of the discharge circuit 50, a signal terminal of the BMS control circuit 20 is connected to a first signal terminal of the main control circuit 60, a signal terminal of the DC/DC circuit 30 is connected to a second signal terminal of the main control circuit 60, a signal terminal of the discharge circuit 50 is connected to a third signal terminal of the main control circuit, the controlled terminal of the switching circuit 40 is connected to the control terminal of the main control circuit 60.
The charging circuit 10 is used for providing power for the BMS control circuit, the BMS control circuit 20 is used for providing power for the DC/DC circuit 30, the DC/DC circuit 30 is used for shunting input power to the switching circuit 40 after constant voltage, the switching circuit 40 is used for controlling the multi-path same power supply of the DC/DC circuit 30 to be combined and distributed to the discharging circuit in different ways, the discharging circuit 50 is used for providing power for the electric vehicle, the main control circuit 60 is in signal communication with the BMS control circuit 20, the DC/DC circuit and the discharging circuit 50 through a CAN communication protocol and controls the switching on or off of the switching circuit 40, after the main control circuit 60 receives a charging power signal required by the electric vehicle through the discharging circuit 50, the main control circuit 60 sends a control signal to the switching circuit 40, and the switching circuit 40 performs combined distribution on the multi-path output of the DC/DC circuit to output different power to the method circuit, the purpose of intelligent power distribution is achieved.
Referring to fig. 2, in another embodiment of the electric vehicle charging apparatus of the present invention, preferably, the charging circuit 10 includes a dc charging interface 11 and a first switch K1, a positive power output terminal of the dc charging interface 11 is connected to a first terminal of the first switch K1, a negative power output terminal of the dc charging interface 11 is connected to a negative power input terminal of the BMS control circuit, a second terminal of the first switch K1 is connected to a positive power input terminal of the BMS control circuit 20, a controlled terminal of the first switch K1 is connected to a control terminal of the dc charging interface 11, the dc charging interface 11 is used for providing a battery power of the BMS control circuit 20, the first switch K1 is in a normally open state, and when the charging circuit works, the first switch is in a normally closed state, the dc charging interface 11 can perform a charging operation with an external charging apparatus in addition to charge the BMS control circuit.
Preferably, the BMS control circuit 20 includes a BMS unit 21 and a second switch K2, the signal terminal of the BMS unit 21 is the signal terminal of the BMS control circuit 20, the power input terminal of the BMS unit 21 is the power input terminal of the BMS control circuit 20, a first terminal of the second switch K2 is connected to the positive power output terminal of the BMS unit 21, a second terminal of the second switch K2 is connected to the positive power input terminal of the DC/DC circuit 30, the negative power output terminal of the BMS unit 21 is connected to the negative power input terminal of the DC/DC circuit 30, a controlled terminal of the second switch K2 is connected to the control terminal of the BMS unit 21, the BMS unit 21 is configured to store the electric power of the electric vehicle charging apparatus and detect the operating parameter of the battery, the BMS unit 21 is further configured to perform data communication with the main control circuit 60, and the second switch K2 is controlled to be turned on or off according to the signal of the main control circuit 60, the BMS unit is configured to perform system, the working voltage, current, temperature and output power of the storage battery can be monitored.
Preferably, the DC/DC circuit 30 includes a first DC/DC unit 31, a second DC/DC unit 32, a third DC/DC unit 33, a fourth DC/DC unit 34, a fifth DC/DC unit 35, a sixth DC/DC unit 36, a seventh DC/DC unit 37, and an eighth DC/DC unit 38.
The positive supply input of the first DC/DC unit 31, the positive supply input of the second DC/DC unit 32, the positive supply input of the third DC/DC unit 33, the positive supply input of the fourth DC/DC unit 34, the positive supply input of the fifth DC/DC unit 35, the positive supply input of the sixth DC/DC unit 36, the positive supply input of the seventh DC/DC unit 37 and the positive supply input of the seventh DC/DC unit 38 are interconnected, the connection node of which is the positive supply input of the DC/DC circuit 30, the negative supply input of the first DC/DC unit 31, the negative supply input of the second DC/DC unit 32, the negative supply input of the third DC/DC unit 33, the negative supply input of the fourth DC/DC unit 34, the negative supply input of the fifth DC/DC unit 35, The negative supply input of the sixth DC/DC unit 36, the negative supply input of the seventh DC/DC unit 37 and the negative supply input of the seventh DC/DC unit 38 are interconnected, the connection node of which is the negative supply input of the DC/DC circuit 30.
The positive power supply output of the first DC/DC unit 31, the positive power supply output of the second DC/DC unit 32, the positive power supply output of the third DC/DC unit 33 and the positive power supply output of the fourth DC/DC unit 34 are interconnected, the connection nodes of which are the first positive power supply output of the DC/DC circuit 30, the negative power supply output of the first DC/DC unit 31, the negative power supply output of the second DC/DC unit 32, the negative power supply output of the third DC/DC unit 33 and the negative power supply output of the fourth DC/DC unit 34 are interconnected, the connection nodes of which are the first negative power supply output of the DC/DC circuit 30, the positive power supply output of the fifth DC/DC unit 35, the positive power supply output of the sixth DC/DC unit 36, the positive power supply output of the seventh DC/DC unit 37 and the positive power supply output of the seventh DC/DC unit 38 are interconnected, the connection node thereof is the second positive power supply output terminal of the DC/DC circuit 30, the negative power supply output terminal of the fifth DC/DC unit 35, the negative power supply output terminal of the sixth DC/DC unit 36, the negative power supply output terminal of the seventh DC/DC unit 37 and the negative power supply output terminal of the seventh DC/DC unit 38 are interconnected, and the connection node thereof is the second negative power supply output terminal of the DC/DC circuit 30.
Preferably, the output power of any one of the DC/DC units is constant and 15kw, which can ensure that the output power is constant and the charging efficiency is ensured.
Preferably, the switch circuit 40 comprises a third switch K3, a fourth switch K4, a fifth switch K5 and a sixth switch K6, a first terminal of the third switch K3 is connected to a first terminal of the fifth switch K5, a connection node thereof is a first positive power input terminal of the switch circuit 40, a second terminal of the third switch K3 is connected to a first terminal of the sixth switch K6, a connection node thereof is a second positive power input terminal of the switch circuit 40, a first terminal of the fourth switch K4 is connected to a first negative power output terminal of the DC/DC circuit 30, a connection node thereof is a first negative power output terminal of the switch circuit 40, a second terminal of the fourth switch K4 is connected to a second negative power output terminal of the DC/DC circuit 30, a connection node thereof is a second negative power output terminal of the switch circuit 40, a second terminal of the fifth switch K5 is a first positive power output terminal of the switch circuit 40, a second terminal of the sixth switch K6 is a second positive power output terminal of the switch circuit 40, the controlled terminal of the third switch K3 is connected with the first control terminal of the main control circuit 60, the controlled terminal of the fourth switch K4 is connected with the second control terminal of the main control circuit 60, the controlled terminal of the fifth switch K5 is connected with the third control terminal of the main control circuit 60, the controlled terminal of the sixth switch K6 is connected with the fourth control terminal of the main control circuit 60, the switch circuit 40 is controlled by the main control circuit 60 to perform different closing or opening operations on the contactor to output electric energy with different powers, the electric energy with the power of 60kw or 120kw can be output and can be output from a plurality of output terminals, and the charging and power supply requirements of a plurality of electric vehicles can be met.
Preferably, the discharging circuit 50 includes a first discharging interface 51 and a second discharging interface 52, a positive power input end of the first discharging interface 51 is a first positive power input end of the discharging circuit 50, a positive power output end of the first discharging interface 51 is a first positive power output end of the discharging circuit 50, a positive power input end of the second discharging interface 52 is a second positive power input end of the discharging circuit 50, a positive power output end of the second discharging interface 52 is a second positive power output end of the discharging circuit 50, the discharging circuit 50 is configured to perform docking charging on the electric vehicle, any discharging interface may further receive charging power information required by the electric vehicle, and send the charging power information to the main control circuit 60 through a CAN communication protocol, and the discharging circuit 50 serves as a docking port with the electric vehicle, and may obtain charging power required by the electric vehicle and send the charging power to the main control circuit 60, so as to implement intelligent communication.
Preferably, the main control circuit 60 includes a main control board (not shown) and a contactor control circuit (not shown), the signal terminal of the main control board is the signal terminal of the main control circuit 60, the control terminal of the contactor control circuit is the control terminal of the main control circuit 60, the signal terminal of the contactor control circuit is connected to the fourth signal terminal of the main control board, the main control board performs data communication with the BMS control circuit 20, the DC/DC circuit 30 and the discharging circuit 50 through a CAN communication protocol and acquires output terminal current parameters of each circuit, the main control board acquires the charging power required by the electric vehicle through the discharging circuit 50 and then sends a control signal to the BMS control circuit 20 and the switching circuit to output corresponding power, the main control circuit 60 CAN acquire the output power of the BMS control circuit 20, the DC/DC circuit 30 and the discharging circuit 50 through the CAN communication protocol, and the action of the switch circuit 40 can be controlled to output the power required by the electric automobile, so that intelligent distribution and centralized control are realized.
The working principle of the electric vehicle charging device of the present invention is described below with reference to fig. 1 to 2:
the electric automobile discharges the side and uses the DC/DC unit of single 15KW of power, BMS control circuit 20 corresponds 8 parallelly connected DC/DC units, every 4 DC/DC units correspond 1 interface of discharging, there are first interface 51 of discharging, second interface 52 of discharging, communicate and control through with BMS control circuit 20, DC/DC circuit 30 and discharging circuit with main control circuit 60, can be according to different charging power demands, third switch K3, fourth switch K4, fifth switch and sixth switch are closed or opened, every interface of discharging obtains required power, both satisfied the charging demand of different capacity and different charging multiplying power electric automobile, improve the conversion efficiency and the equipment utilization ratio of charging equipment again.
Taking charging of an electric vehicle as an example:
when an electric automobile needs to be charged, the first discharging interface 51 is connected with the electric automobile, the electric automobile sends information of requested current and voltage to the main control board through the first discharging interface 51 in a communication mode, the main control board performs information processing, and the contactor is controlled to be closed and corresponding power is output through the communication control BMS control circuit 20 and the switch circuit 40.
If the charging request power of the electric automobile is not more than 60kw, the main control board gives an instruction to the BMS control circuit 20, the BMS control circuit 20 controls the second switch K2 to be closed, meanwhile, the main control board controls the DC/DC circuit to output corresponding voltage and current, controls the fifth switch K5 to be closed, the third switch K3 and the fourth switch K4 do not act, and the whole system outputs corresponding request power to charge the electric automobile.
If the charging request power of the electric automobile is larger than 60KW, the first discharging interface cannot reach the charging required power of the electric automobile at the moment, the main control board gives an instruction to the BMS control circuit 20, the BMS control circuit 20 controls the second switch K2 to be closed, meanwhile, the main control board controls the third switch K3, the fourth switch K4 and the fifth switch K5 to be closed, the DC/DC circuit is controlled to output corresponding voltage and current, and the whole system outputs corresponding required power to charge the electric automobile.
The utility model discloses still provide an energy storage supply vehicle, this energy storage supply vehicle include as above electric automobile battery charging outfit, this electric automobile battery charging outfit's concrete structure refers to above-mentioned embodiment, because this energy storage supply vehicle has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary details one by one here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (9)
1. The charging equipment for the electric automobile is characterized by comprising a charging circuit, a BMS control circuit, a DC/DC circuit, a switching circuit, a discharging circuit and a main control circuit;
the power output end of the charging circuit is connected with the power input end of the BMS control circuit, the power output end of the BMS control circuit is connected with the power input end of the DC/DC circuit, the power output end of the DC/DC circuit is connected with the power input end of the switching circuit, the power output end of the switching circuit is connected with the power input end of the discharging circuit, the signal end of the BMS control circuit is connected with the first signal end of the main control circuit, the signal end of the DC/DC circuit is connected with the second signal end of the main control circuit, the signal end of the discharging circuit is connected with the third signal end of the main control circuit, and the controlled end of the switching circuit is connected with the control end of the main control circuit;
the charging circuit is used for providing a power supply for the BMS control circuit;
the BMS control circuit is used for providing power supply for the DC/DC circuit;
the DC/DC circuit is used for shunting an input power supply and outputting the shunted input power supply to the switch circuit; the switching circuit is used for controlling multiple paths of same power supplies of the DC/DC circuit to carry out different combination distribution to the discharge circuit;
the discharge circuit is used for providing a power supply for the electric automobile;
the main control circuit is in signal communication with the BMS control circuit, the DC/DC circuit and the discharge circuit through a CAN communication protocol, and controls the switch-on or switch-off of the switch circuit.
2. The electric vehicle charging apparatus of claim 1, wherein the charging circuit comprises a dc charging interface and a first switch;
a positive power supply output end of the direct-current charging interface is connected with a first end of the first switch, a negative power supply output end of the direct-current charging interface is connected with a negative power supply input end of the BMS control circuit, a second end of the first switch is connected with the positive power supply input end of the BMS control circuit, and a controlled end of the first switch is connected with a control end of the direct-current charging interface;
the direct current charging interface is used for providing electric energy of a storage battery of the BMS control circuit, the first switch is in a normally open state, and when the charging circuit is in butt joint with external charging equipment for charging, the first switch is in a normally closed state.
3. The electric vehicle charging apparatus of claim 1, wherein the BMS control circuit comprises a BMS unit and a second switch;
the signal end of the BMS unit is the signal end of the BMS control circuit, the power input end of the BMS unit is the power input end of the BMS control circuit, the first end of the second switch is connected with the positive power output end of the BMS unit, the second end of the second switch is connected with the positive power input end of the DC/DC circuit, the negative power output end of the BMS unit is connected with the negative power input end of the DC/DC circuit, and the controlled end of the second switch is connected with the control end of the BMS unit;
the BMS unit is used for storing the electric energy of the electric automobile charging equipment and detecting working current, voltage and temperature parameters of the storage battery, and the BMS unit can also be used for carrying out data communication with the main control circuit and controlling the second switch to be switched on or switched off according to signals of the main control circuit.
4. The electric vehicle charging apparatus of claim 1, wherein the DC/DC circuit comprises a first DC/DC unit, a second DC/DC unit, a third DC/DC unit, a fourth DC/DC unit, a fifth DC/DC unit, a sixth DC/DC unit, a seventh DC/DC unit, an eighth DC/DC unit;
the positive power supply input of the first DC/DC unit, the positive power supply input of the second DC/DC unit, the positive power supply input of the third DC/DC unit, the positive power supply input of the fourth DC/DC unit, the positive power supply input of the fifth DC/DC unit, the positive power supply input of the sixth DC/DC unit, the positive power supply input of the seventh DC/DC unit and the positive power supply input of the eighth DC/DC unit are interconnected, the connection node of which is the positive power supply input of the DC/DC circuit;
the negative supply input of the first DC/DC unit, the negative supply input of the second DC/DC unit, the negative supply input of the third DC/DC unit, the negative supply input of the fourth DC/DC unit, the negative supply input of the fifth DC/DC unit, the negative supply input of the sixth DC/DC unit, the negative supply input of the seventh DC/DC unit and the negative supply input of the eighth DC/DC unit are interconnected, the connection node of which is the negative supply input of the DC/DC circuit;
the positive power supply output terminal of the first DC/DC unit, the positive power supply output terminal of the second DC/DC unit, the positive power supply output terminal of the third DC/DC unit, and the positive power supply output terminal of the fourth DC/DC unit are interconnected, connection nodes thereof being the first positive power supply output terminal of the DC/DC circuit, the negative power supply output terminal of the first DC/DC unit, the negative power supply output terminal of the second DC/DC unit, the negative power supply output terminal of the third DC/DC unit, and the negative power supply output terminal of the fourth DC/DC unit being interconnected, connection nodes thereof being the first negative power supply output terminal of the DC/DC circuit;
the positive power supply output terminal of the fifth DC/DC unit, the positive power supply output terminal of the sixth DC/DC unit, the positive power supply output terminal of the seventh DC/DC unit, and the positive power supply output terminal of the eighth DC/DC unit are interconnected, a connection node thereof is the second positive power supply output terminal of the DC/DC circuit, the negative power supply output terminal of the fifth DC/DC unit, the negative power supply output terminal of the sixth DC/DC unit, the negative power supply output terminal of the seventh DC/DC unit, and the negative power supply output terminal of the eighth DC/DC unit are interconnected, a connection node thereof is the second negative power supply output terminal of the DC/DC circuit.
5. The electric vehicle charging apparatus of claim 4, wherein the output power of any one of the DC/DC units is constant and 15 kw.
6. The electric vehicle charging apparatus of claim 1, wherein the switching circuit comprises a third switch, a fourth switch, a fifth switch, and a sixth switch;
a first terminal of the third switch is connected to a first terminal of the fifth switch, a connection node of the third switch is a first positive power supply input terminal of the switch circuit, a second terminal of the third switch is connected to a first terminal of the sixth switch, a connection node of the third switch is a second positive power supply input terminal of the switch circuit, a first terminal of the fourth switch is connected to a first negative power supply output terminal of the DC/DC circuit, a connection node of the fourth switch is a first negative power supply output terminal of the switch circuit, a second terminal of the fourth switch is connected to a second negative power supply output terminal of the DC/DC circuit, a connection node of the fourth switch is a second negative power supply output terminal of the switch circuit, a second terminal of the fifth switch is a first positive power supply output terminal of the switch circuit, and a second terminal of the sixth switch is a second positive power supply output terminal of the switch circuit;
the controlled end of the third switch is connected with the first control end of the main control circuit, the controlled end of the fourth switch is connected with the second control end of the main control circuit, the controlled end of the fifth switch is connected with the third control end of the main control circuit, and the controlled end of the sixth switch is connected with the fourth control end of the main control circuit.
7. The electric vehicle charging apparatus of claim 1, wherein the discharge circuit comprises a first discharge interface, a second discharge interface;
the positive power supply input end of the first discharging interface is a first positive power supply input end of the discharging circuit, the positive power supply output end of the first discharging interface is a first positive power supply output end of the discharging circuit, the positive power supply input end of the second discharging interface is a second positive power supply input end of the discharging circuit, and the positive power supply output end of the second discharging interface is a second positive power supply output end of the discharging circuit;
the discharging circuit is used for carrying out butt joint charging on the electric automobile, and any discharging interface CAN also receive charging power information required by the electric automobile and sends the charging power information to the main control circuit through a CAN communication protocol.
8. The electric vehicle charging apparatus of claim 1, wherein the master control circuit comprises a master control board and a contactor control circuit;
the signal end of the main control board is the signal end of the main control circuit, the control end of the contactor control circuit is the control end of the main control circuit, and the signal end of the contactor control circuit is connected with the fourth signal end of the main control board;
the main control board is in data communication with the BMS control circuit, the DC/DC circuit and the discharge circuit through a CAN communication protocol and acquires output end current parameters of the circuits, and the main control board acquires the charging power required by the electric automobile through the discharge circuit and then sends control signals to the BMS control circuit and the switch circuit to output corresponding power.
9. An energy storage power supply vehicle, characterized by comprising the electric vehicle charging device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721518880.7U CN207772914U (en) | 2017-11-14 | 2017-11-14 | Charging equipment of electric automobile and accumulation power supply vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721518880.7U CN207772914U (en) | 2017-11-14 | 2017-11-14 | Charging equipment of electric automobile and accumulation power supply vehicle |
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| CN207772914U true CN207772914U (en) | 2018-08-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541988A (en) * | 2018-10-18 | 2019-03-29 | 天津市天楚科技有限公司 | A kind of intelligent recharge and discharge tooling device |
| CN114268152A (en) * | 2021-12-27 | 2022-04-01 | 江苏云邦电子科技有限公司 | Passive protection and active protection system and method for lithium battery energy storage |
-
2017
- 2017-11-14 CN CN201721518880.7U patent/CN207772914U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541988A (en) * | 2018-10-18 | 2019-03-29 | 天津市天楚科技有限公司 | A kind of intelligent recharge and discharge tooling device |
| CN114268152A (en) * | 2021-12-27 | 2022-04-01 | 江苏云邦电子科技有限公司 | Passive protection and active protection system and method for lithium battery energy storage |
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