CN213973653U - Charging device for low-speed electric vehicle - Google Patents
Charging device for low-speed electric vehicle Download PDFInfo
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- CN213973653U CN213973653U CN202022386652.7U CN202022386652U CN213973653U CN 213973653 U CN213973653 U CN 213973653U CN 202022386652 U CN202022386652 U CN 202022386652U CN 213973653 U CN213973653 U CN 213973653U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02T10/70—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
- 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
- Y02T90/12—Electric charging stations
Abstract
A charging device for a low-speed electric vehicle belongs to the technical field of low-speed electric vehicle charging. The power input interface of the charging device is matched with a charging gun of a charging pile for an electric passenger vehicle and is used for connecting the charging pile for the electric passenger vehicle, and the power output interface is used for connecting a charging battery of a low-speed electric vehicle; the power input interface, one of the control switches and the DC/DC circuit are sequentially connected in series to form a DC charging branch circuit; the power input interface, the rest of control switches, the PFC circuit and the DC/DC circuit are connected in series to form an alternating current charging branch; the control unit is connected with each control switch in a control mode, the alternating current charging branch is connected when the control unit controls all the control switches in the alternating current charging branch to be closed, and the direct current charging branch is connected when the control unit controls all the control switches in the direct current charging branch to be closed. Utilize this charging device to let low-speed electric motor car directly use electronic passenger car to fill electric pile and charge to compatible alternating current-direct current fills electric pile, has increased the flexibility of charging of low-speed electric motor car.
Description
Technical Field
The utility model relates to a low-speed is charging device for electric motor car belongs to low-speed electric motor car technical field that charges.
Background
The group battery of low-speed electric motor car generally all is lead acid battery, the open circuit voltage of battery is mostly 96V, the battery interface does not have BMS, present low-speed electric motor car can only use the mode of taking the external alternating current power supply of charger to charge, can not directly use electronic passenger car to charge with filling electric pile, the place of charging that leads to the low-speed electric motor car receives very big restriction, the charging means is very inflexible, electric passenger car is with filling electric pile also not obtaining effectual utilization simultaneously, cause the waste of public resource.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can let low-speed electric motor car directly use the charging device that electric pile charges for passenger car.
In order to achieve the above object, the utility model provides a low-speed charging device for electric motor car, this charging device includes: the power supply control circuit comprises a power supply input interface, a power supply output interface, a control unit, a PFC circuit, a DC/DC circuit and at least two control switches;
the power input interface is matched with a charging gun of a charging pile for an electric passenger vehicle and is used for connecting the charging pile for the electric passenger vehicle, and the charging pile for the electric passenger vehicle is an alternating current charging pile or a direct current charging pile; the power output interface is used for connecting a rechargeable battery of the low-speed electric vehicle;
the control unit is used for being in communication connection with the charging pile for the electric passenger car through the power input interface;
the power input interface, one of the control switches and the DC/DC circuit are sequentially connected in series to form a DC charging branch circuit; the power input interface, the rest of control switches, the PFC circuit and the DC/DC circuit are connected in series to form an alternating current charging branch; the control unit is connected with each control switch in a control mode, the alternating current charging branch is connected when the control unit controls all the control switches in the alternating current charging branch to be closed, and the direct current charging branch is connected when the control unit controls the control switches in the direct current charging branch to be closed.
The utility model has the advantages that: the utility model discloses a low-speed is charging device for electric motor car (hereinafter for short charging device), its power input interface and electronic passenger car are with the rifle adaptation that charges that fills electric pile, and this charging device is inside to contain the direct current branch road that charges and the alternating current branch road that charges. When the charging device of the utility model is used for charging a low-speed electric vehicle, a power input interface of the charging device is connected with a charging gun of a charging pile of an electric passenger vehicle, a power output interface of the charging device is connected with a charging battery (hereinafter referred to as a charging battery) of the low-speed electric vehicle, and meanwhile, the control unit is in communication connection with the charging pile of the electric passenger vehicle through the power input interface for obtaining information of the charging pile of the electric passenger vehicle and judging whether the charging pile of the electric passenger vehicle is an alternating current charging pile or a direct current charging pile according to the information of the charging pile of the electric passenger vehicle; when judging that electronic passenger car fills electric pile is direct current and fills electric pile, the control unit control direct current fills the closed switch-on direct current branch road that charges in the branch road that charges, and direct current fills electric pile and charges to rechargeable battery through the direct current branch road that charges, thereby utilizes the utility model discloses a charging device can let low-speed electric car directly use electronic passenger car to fill electric pile and charge, and compatible alternating current fills electric pile and direct current simultaneously and fills electric pile, has increased the flexibility of charging of low-speed electric car, has effectively utilized electronic passenger car to fill electric pile, has avoided the waste of public resource.
Further, in the charging device for the low-speed electric vehicle, the charging device includes 3 control switches in total, the ac charging branch includes 2 control switches, one of the control switches is connected in series between the power input interface and the PFC circuit, and the other control switch is connected in series between the PFC circuit and the DC/DC circuit.
Further, in the charging device for the low-speed electric vehicle, the control switch is a relay switch, the relay switch includes a relay coil and a relay normally open contact, the relay normally open contact is connected in series in the charging branch, the relay coil is connected in series between the power supply and the ground, and whether the relay coil is electrified or not is controlled by the control unit.
Further, in the charging device for the low-speed electric vehicle, the charging device further comprises a battery management system, the control unit is in communication connection with the battery management system, and the battery management system is in communication connection with a rechargeable battery of the low-speed electric vehicle through the power output interface.
The beneficial effects of doing so are: still include battery management system among the charging device, when utilizing this charging device to carry out the in-process that charges to the low-speed electric motor car, the control unit can monitor rechargeable battery's electric quantity through battery management system, and can carry out the communication with filling electric pile according to rechargeable battery's electric quantity, make and fill electric pile adjustment output voltage and output current, after detecting rechargeable battery full charge, the control unit can also inform electronic passenger car to fill electric pile and stop exporting, the control switch in the corresponding branch road that charges is disconnected simultaneously, make and utilize this charging device to charge more safe and reliable to the low-speed electric motor car.
Further, in the charging device for the low-speed electric vehicle, the DC/DC circuit adopts an LLC half-bridge resonant topology.
Drawings
Fig. 1 is a schematic circuit diagram of a charging device for a low-speed electric vehicle according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The embodiment of the device is as follows:
as shown in fig. 1, the low-speed electric vehicle charging device (hereinafter, simply referred to as charging device) of the present embodiment includes: a power input interface, a power output interface, a control unit, a battery management system (i.e., BMS, not shown in the figure), a PFC circuit (i.e., power factor adjustment circuit), a DC/DC circuit, and 3 control switches (i.e., K1, K2, K3).
The power input interface is matched with a charging gun of the charging pile for the electric passenger vehicle and is used for connecting the charging pile for the electric passenger vehicle, and the charging pile for the electric passenger vehicle is an alternating current charging pile or a direct current charging pile; the power output interface is used for connecting a rechargeable battery (hereinafter referred to as a rechargeable battery) of the low-speed electric vehicle;
the control unit is used for being in communication connection with the charging pile for the electric passenger car through the power supply input interface, and specifically, a CAN communication interface of the control unit is connected with a CAN communication interface in the power supply input interface; the control unit is also in communication connection with a BMS, and the BMS is used for being in communication connection with the rechargeable battery through a power output interface;
with reference to fig. 1, the power input interface, the control switch K1 and the DC/DC circuit are sequentially connected in series to form a DC charging branch; the power input interface, the control switch K2, the PFC circuit, the control switch K3 and the DC/DC circuit are sequentially connected in series to form an alternating current charging branch; the control unit is respectively in control connection with the control switches K1, K2 and K3, the AC charging branch is switched on when the control unit controls all the control switches (namely the control switches K2 and K3) in the AC charging branch to be closed, and the DC charging branch is switched on when the control unit controls the control switches (namely the control switch K1) in the DC charging branch to be closed.
In this embodiment, the control unit adopts singlechip (MCU) to realize, the PFC circuit adopts current typical power factor adjustment circuit, the DC/DC circuit adopts LLC half-bridge resonance topological structure, control switch K1, K2, K3 all adopt the relay switch, wherein, the relay switch includes relay coil and relay normally open contact, relay normally open contact establishes ties in the branch road that charges (exchanging the branch road that charges promptly and the branch road that charges directly), the relay coil establishes ties between power and ground, whether the relay coil circular telegram is controlled by the control unit control, when the control unit control relay coil circular telegram, relay normally open contact is closed, and then corresponding control switch is closed, when the control unit control relay coil outage, the relay normally open contact disconnection, and then corresponding control switch disconnection. As other embodiments, the control unit may also be implemented by using other types of processors, the PFC circuit and the DC/DC circuit may also be replaced by other conventional power factor adjusting circuits and DC/DC converting circuits in the prior art, and the control switch may also be implemented by other controllable switches in the prior art.
As shown in fig. 1, the implementation manner of the control unit controlling whether the relay coil is energized in this embodiment is as follows: the control unit is connected with the base electrode of the NPN triode in a control mode, when the control unit inputs a high level to the base electrode of the NPN triode, the NPN triode is conducted, and then the relay coil is electrified; when the control unit inputs a low level to the base electrode of the NPN triode, the NPN triode is not conducted, and then the relay coil is powered off. Specifically, the AC interface of the control unit respectively controls the bases of NPN triodes Q20, Q21, thereby respectively controlling connection control switches K2, K3; the DC interface of the control unit is connected with the base of an NPN triode Q22, thereby controlling the connection with a control switch K1.
When the charging device of the embodiment is used for charging a low-speed electric vehicle, a power input interface of the charging device is connected with a charging gun of a charging pile of an electric passenger vehicle, a power output interface of the charging device is connected with a charging battery, a CAN communication interface of a control unit is in communication connection with the charging pile of the electric passenger vehicle through the CAN communication interface of the power input interface so as to acquire information of the charging pile of the electric passenger vehicle, and judge whether the charging pile of the electric passenger vehicle is an alternating current charging pile or a direct current charging pile according to the information of the charging pile of the electric passenger vehicle, when the charging pile of the electric passenger vehicle is judged to be the alternating current charging pile, an AC interface of the control unit outputs a high level, a DC interface outputs a low level, NPN triodes Q20 and Q21 are switched on, an NPN triode Q22 is switched off, control switches K2 and K3 are switched on, a control switch K1 is switched off, and an alternating current charging branch is switched on, the alternating-current charging pile charges the rechargeable battery through the alternating-current charging branch, for example, the output voltage of the PFC circuit can be DC400V by adjusting the power factor of the PFC circuit during charging, and then the DC400V charges the rechargeable battery through the DC/DC circuit; when the charging pile for the electric passenger vehicle is judged to be a direct-current charging pile, the AC interface of the control unit outputs a low level, the DC interface outputs a high level, the NPN triodes Q20 and Q21 are cut off, the NPN triode Q22 is conducted, the control switches K2 and K3 are disconnected, the control switch K1 is closed, the direct-current charging branch is conducted, the direct-current charging pile charges the charging battery through the direct-current charging branch, for example, the output voltage of the direct-current charging pile can be adjusted to DC400V, and then the DC400V charges the charging battery through a DC/DC circuit; and meanwhile, the BMS is in communication connection with the rechargeable battery through the power output interface, in the charging process, the control unit monitors the electric quantity of the rechargeable battery through the BMS, and communicates with the charging pile according to the electric quantity of the rechargeable battery, so that the charging pile adjusts the output voltage and the output current, and informs the charging pile to stop outputting after detecting that the rechargeable battery is fully charged, and simultaneously disconnects the control switch in the corresponding charging branch.
To sum up, utilize the charging device of this embodiment can let the low-speed electric motor car directly use electronic passenger car to fill electric pile and charge, and compatible alternating-current charging stake and direct current fill electric pile have increased the flexibility of charging of low-speed electric motor car simultaneously, have effectively utilized electronic passenger car to fill electric pile, have avoided the waste of public resource.
In practical application, in order to avoid the trouble of finding the charging device everywhere and avoid the charging device to take the trouble of taking off easy damage, can install the charging device for the low-speed electric motor car of this embodiment on the chassis of low-speed electric motor car, it is more convenient to operate when making to charge simultaneously, can also set up the power input interface of the charging device for the low-speed electric motor car in the automobile body side of low-speed electric motor car.
In another embodiment, the number of the control switches in the charging device for the low-speed electric vehicle may be adjusted according to actual needs, for example, the charging device for the low-speed electric vehicle may further include only 2 control switches, in which case, the ac charging branch includes only 1 control switch, and the ac charging branch is formed by sequentially connecting the power input interface, the 1 control switch, the PFC circuit, and the DC/DC circuit in series.
Claims (5)
1. A charging device for a low-speed electric vehicle, characterized by comprising: the power supply control circuit comprises a power supply input interface, a power supply output interface, a control unit, a PFC circuit, a DC/DC circuit and at least two control switches;
the power input interface is matched with a charging gun of a charging pile for an electric passenger vehicle and is used for connecting the charging pile for the electric passenger vehicle, and the charging pile for the electric passenger vehicle is an alternating current charging pile or a direct current charging pile; the power output interface is used for connecting a rechargeable battery of the low-speed electric vehicle;
the control unit is used for being in communication connection with the charging pile for the electric passenger car through the power input interface;
the power input interface, one of the control switches and the DC/DC circuit are sequentially connected in series to form a DC charging branch circuit; the power input interface, the rest of control switches, the PFC circuit and the DC/DC circuit are connected in series to form an alternating current charging branch; the control unit is connected with each control switch in a control mode, the alternating current charging branch is connected when the control unit controls all the control switches in the alternating current charging branch to be closed, and the direct current charging branch is connected when the control unit controls the control switches in the direct current charging branch to be closed.
2. The charging device of claim 1, wherein the charging device comprises 3 control switches, and the ac charging branch comprises 2 control switches, wherein one control switch is connected in series between the power input interface and the PFC circuit, and the other control switch is connected in series between the PFC circuit and the DC/DC circuit.
3. The charging device for the low-speed electric vehicle according to claim 1 or 2, wherein the control switch is a relay switch including a relay coil and a relay normally open contact, the relay normally open contact being connected in series in the charging branch, the relay coil being connected in series between a power supply and ground, whether the relay coil is energized or not being controlled by the control unit.
4. The charging device for the low-speed electric vehicle according to claim 3, further comprising a battery management system, wherein the control unit is connected with the battery management system in a communication manner, and the battery management system is used for being connected with a rechargeable battery of the low-speed electric vehicle in a communication manner through the power output interface.
5. The charging device for the low-speed electric vehicle according to claim 3, wherein the DC/DC circuit adopts LLC half-bridge resonant topology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022386652.7U CN213973653U (en) | 2020-10-23 | 2020-10-23 | Charging device for low-speed electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022386652.7U CN213973653U (en) | 2020-10-23 | 2020-10-23 | Charging device for low-speed electric vehicle |
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| CN213973653U true CN213973653U (en) | 2021-08-17 |
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| CN202022386652.7U Active CN213973653U (en) | 2020-10-23 | 2020-10-23 | Charging device for low-speed electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799635A (en) * | 2021-11-11 | 2021-12-17 | 启垠科技(深圳)有限公司 | National standard direct current fills electric pile system with lead acid charging function |
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2020
- 2020-10-23 CN CN202022386652.7U patent/CN213973653U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799635A (en) * | 2021-11-11 | 2021-12-17 | 启垠科技(深圳)有限公司 | National standard direct current fills electric pile system with lead acid charging function |
| CN113799635B (en) * | 2021-11-11 | 2022-11-08 | 启垠科技(深圳)有限公司 | National standard direct current fills electric pile system with lead acid charging function |
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