CN115848322A - Electric vehicle charging system and method - Google Patents
Electric vehicle charging system and method Download PDFInfo
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- CN115848322A CN115848322A CN202211632318.2A CN202211632318A CN115848322A CN 115848322 A CN115848322 A CN 115848322A CN 202211632318 A CN202211632318 A CN 202211632318A CN 115848322 A CN115848322 A CN 115848322A
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Abstract
The invention provides an electric vehicle charging system and a method, wherein the electric vehicle charging system comprises: the charging system comprises a charging station and charging equipment, wherein the charging station comprises at least one first charging equipment battery, the first charging equipment battery in the charging station is charged from mains supply, the charged first charging equipment battery supplies power to the charging equipment, and the charging equipment is used for charging an electric automobile. According to the invention, the problem of overhigh charging cost of the electric automobile in the related technology is solved.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to an electric vehicle charging system and method.
Background
With the popularization of electric vehicles and the large-scale development of charging equipment, the requirement of high-power charging is also continuously improved. The related software and hardware technologies of the battery replacement product mainly adopt a connection technology, and the current industry mainly focuses on the indexes of battery replacement safety, battery replacement speed and the like, and specifically mainly comprises the reliability and durability of a battery replacement mechanism, the mechanical life and reliability of a connector, the battery replacement duration after vehicle in-place detection and the like. At present, the charging (600 kW and above) of the electric automobile has some problems, such as the working procedures of actual testing, power equipment supplement, power supply capacity application, sheathed power cable laying and the like, and the equipment integration period and the cost are high; the charging unit of the electric automobile needs a battery with larger charging and discharging capacity, and the existing vehicle battery does not have the conditions of external discharging and battery replacement and only can perform resistance heat consumption; quick charging of the battery replacement station cannot be integrated in the equipment, and the energy supplement of the whole battery is influenced. Therefore, the problem that the charging cost of the electric automobile is too high exists in the prior art.
Disclosure of Invention
The invention provides an electric vehicle charging system and method, which at least solve the problem of overhigh charging cost of an electric vehicle in the related technology.
According to a first aspect of embodiments of the present invention, there is provided an electric vehicle charging system, the system including: trade power station and battery charging outfit, trade the power station and include at least one first trade electric equipment battery, trade first trade electric equipment battery in the power station and charge from the commercial power, the first trade electric equipment battery after charging does battery charging outfit supplies power, wherein, battery charging outfit is used for charging for electric automobile.
Optionally, the battery replacement station further includes a second battery replacement device battery, the second battery replacement device battery is charged by the charging device, and the second battery replacement device battery is used for performing a function test on the charging device, where the function test includes testing current and power of the charging device.
Optionally, the second battery replacement device is further configured to supply power to a mains supply load or charge a first battery replacement device battery in the battery replacement station.
Optionally, the system further comprises: the power line protection system comprises AC/DC bidirectional equipment, a metering device, a collecting device and a protecting device, wherein a first power conversion equipment battery in the power conversion station is charged from a mains supply through the AC/DC bidirectional equipment, the metering device, the collecting device and the protecting device, and the AC/DC bidirectional equipment, the metering device, the collecting device and the protecting device are respectively used for converting alternating current into direct current, recording power generation/supply quantity, measuring power parameters and protecting the safe operation of a power line.
Optionally, the system further comprises: the first battery replacing device supplies power to the charging device through the inverter filtering device, and the inverter filtering device is used for converting direct current into alternating current and amplifying power.
Optionally, the system further comprises: the first contactor is connected with a commercial power supply and the first battery replacing device and used for controlling the first battery replacing device to charge, the second contactor is connected with the first battery replacing device and the charging device and used for controlling the first battery replacing device to charge, and only one of the first contactor and the second contactor is in a closed state at any moment.
Optionally, the system further comprises: the third contactor is connected with a charging device and a second battery replacing device battery and used for controlling the charging device to charge the second battery replacing device battery, the second battery replacing device battery is connected with a mains supply or the first battery replacing device battery through the fourth contactor, the fourth contactor is used for controlling the second battery replacing device battery to discharge, and only one of the third contactor and the fourth contactor is in a closed state at any moment.
Optionally, the system further comprises: the connecting device is used for connecting a first battery replacing device and charging equipment, and the single-phase inverter is located in the charging equipment and used for converting direct current provided by the first battery replacing device into alternating current.
According to a second aspect of the embodiments of the present invention, there is also provided an electric vehicle charging method applied to the electric vehicle charging system according to any one of the first aspect of the embodiments of the present invention, the method including: controlling a first battery replacement device to be charged from commercial power; and controlling the charged battery of the first battery replacement device to discharge to the charging device.
Optionally, the method further comprises: the first power conversion equipment battery is controlled to be charged from the mains supply by closing the first contactor and opening the second contactor; the first contactor is opened, the second contactor is closed, and the first battery replacing device is controlled to discharge the battery to the charging device; the charging equipment is controlled to charge the battery of the second battery replacement equipment by closing the third contactor and opening the fourth contactor; by disconnecting the third contactor and the first contactor, closing the fourth contactor to control the second battery replacement device to supply power to the mains supply load; and closing the fourth contactor and the first contactor to control the second battery replacing device to charge the first battery replacing device by disconnecting the third contactor and the protection device between the first battery replacing device and the mains supply.
In the embodiment of the invention, at least one first battery replacing device is arranged in the battery replacing station, commercial power is used for charging the first battery replacing device, and the charged first battery replacing device is used for supplying power to the charging device, so that the purpose of charging the electric automobile by using the charging device is realized, or the charged first battery replacing device is replaced for the electric automobile to charge the electric automobile. The capacity of the first battery replacing device is configured according to specific charging requirements, the circuit is simple, the building cost is low, and the problem that the charging cost of the electric vehicle is too high in the related technology is solved.
In the embodiment of the invention, the charging equipment charges the battery of the second battery replacing equipment, and the current and the power output by the charging equipment are detected by the battery of the second battery replacing equipment, so that the charging current and the charging power of the charging equipment are tested, and unnecessary test electricity consumption for detecting by using a resistor is avoided.
In the embodiment of the invention, the purpose of avoiding energy waste and realizing energy circulation flow is achieved by controlling the second battery replacing device to supply power to the commercial power load or charging the first battery replacing device in the battery replacing station.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
FIG. 1 is a schematic diagram of an alternative electric vehicle charging system according to an embodiment of the present invention;
FIG. 2 is an overall schematic diagram of an alternative electric vehicle charging system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an alternative electric vehicle charging method according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for distinguishing similar objects, and are not necessarily used for describing a particular order or sequence. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
According to a first aspect of embodiments of the present invention, there is provided an electric vehicle charging system, the system including: the charging system comprises a battery replacing station and charging equipment, wherein the battery replacing station comprises at least one first battery replacing equipment battery, the first battery replacing equipment battery in the battery replacing station is charged from mains supply, the charged first battery replacing equipment battery supplies power for the charging equipment, and the charging equipment is used for charging the electric automobile. Optionally, as shown in fig. 1, the battery replacement station includes at least one first battery replacement device battery, the first battery replacement device battery is charged from the mains, and the first battery replacement device battery may configure the battery capacity according to the requirement of the electric vehicle. The charged battery of the first battery replacement device supplies power to the charging device, and the charging device can be used for charging an electric automobile. Or the battery in the electric automobile is directly replaced by the charged first battery replacing device battery, so that the quick battery replacement of the electric automobile can be realized.
In the embodiment of the invention, at least one first battery replacing device is arranged in the battery replacing station, commercial power is used for charging the first battery replacing device, and the charged first battery replacing device is used for supplying power to the charging device, so that the purpose of charging the electric automobile by using the charging device is realized, or the charged first battery replacing device is replaced for the electric automobile to charge the electric automobile. The capacity of the first battery replacing device battery is configured according to specific charging requirements, the circuit is simple, the building cost is low, and the problem that the charging cost of the electric automobile is too high in the related technology is solved.
As an optional embodiment, the battery swapping station further includes a second battery swapping device battery, the charging device charges the second battery swapping device battery, and the second battery swapping device battery is used for performing a function test on the charging device, where the function test includes testing current and power of the charging device. Alternatively, the charging device may charge a second battery replacing device in the battery replacing station, and the second battery replacing device may detect the current and power output by the charging device, instead of using a resistor to test the current and power output by the charging device in the conventional method. In the embodiment of the invention, the charging equipment charges the battery of the second battery replacing equipment, and the current and the power output by the charging equipment are detected by the battery of the second battery replacing equipment, so that the charging current and the charging power of the charging equipment are tested, and unnecessary test electricity consumption for detecting by using a resistor is avoided.
As an optional embodiment, the second battery replacement device is further configured to supply power to the commercial power load or charge the first battery replacement device in the battery replacement station. Optionally, a battery of a second battery replacing device in the battery replacing station may use stored electric energy to supply power to a load under commercial power or charge a battery of a first battery replacing device in the battery replacing station, the battery of the first battery replacing device supplies power to the charging device, and the charging device may use the battery of the second battery replacing device after energy consumption to perform a function test, so that energy circulation is realized, and energy waste is avoided.
As an alternative embodiment, the system further comprises: the system comprises AC/DC bidirectional equipment, a metering device, a collecting device and a protecting device, wherein a first battery of the battery replacing equipment in the battery replacing station is charged from commercial power through the AC/DC bidirectional equipment, the metering device, the collecting device and the protecting device, and the AC/DC bidirectional equipment, the metering device, the collecting device and the protecting device are respectively used for converting alternating current into direct current, recording power generation/supply quantity, measuring power parameters and protecting safe operation of a power line.
Optionally, when a first battery of the battery replacement device in the battery replacement station is charged from the mains supply, the AC mains supply needs to be converted into the DC power through the AC/DC bidirectional device. The AC/DC bidirectional equipment can also be used for converting direct current generated by a battery of second battery replacement equipment of the battery replacement station into alternating current. In addition, a metering device, a collecting device and a protecting device are arranged between the first battery replacement equipment battery and the commercial power. The metering device can be used for measuring and recording the power supply quantity of a battery of first battery replacing equipment of a battery replacing station or the generated energy and line loss quantity of second battery replacing equipment of the battery replacing station and the like. It should be noted that the metering device may include: active electric energy meters, reactive electric energy meters, maximum demand meters, metering transformers such as voltage transformers, current transformers and the like. The acquisition device is used for measuring electric parameters such as current, voltage, active power, reactive power, apparent power, frequency, power factor and the like of single-phase or three-phase mains supply. The protection device is used for protecting the safe operation of the power line. In the embodiment of the invention, the safe transmission, exchange and monitoring of energy between the commercial power and the power conversion station are realized through the AC/DC bidirectional equipment, the metering device, the collecting device and the protecting device.
As an alternative embodiment, the system further comprises: the first battery replacing device supplies power to the charging device through the inverter filtering device, and the inverter filtering device is used for converting direct current into alternating current and amplifying power. Optionally, taking the capacities of the first battery replacement device battery and the second battery replacement device battery as 200kWh as an example, the first battery replacement device battery is charged from a mains supply, the mains supply is 0.4kV, and the mains supply is a low-power slow-speed charge less than 60kW when charging the first battery replacement device battery. The direct current output by the first battery replacement equipment is converted into 0.4kV alternating current by the inversion filtering device, and power amplification is carried out, so that 600kW power can be used for supplying power to the charging equipment, and high-power quick charging of the charging equipment is realized. The charging equipment charges a battery of second battery replacing equipment of the battery replacing station according to a charger protocol, and the current and the power output by the charging equipment are detected through the battery of the second battery replacing equipment, so that the function test of the charging equipment is realized. In the embodiment of the invention, a first battery replacing device of the battery replacing station supplies power to the charging device after power amplification is carried out on the battery through the inversion filtering device, the charging device provides high-power quick charging for the electric automobile, the charging device charges a second battery replacing device of the battery replacing station, the function test of the charging device is realized, a charging, replacing and detecting integrated system is formed, and the purposes of integrating the high-power quick charging, the large-capacity battery charging and the function test of the charging device are realized.
As an alternative embodiment, the system further comprises: the first contactor is connected with a commercial power supply and a first battery replacing device and used for controlling the first battery replacing device to charge, the second contactor is connected with the first battery replacing device and the charging device and used for controlling the first battery replacing device to charge the charging device, and only one of the first contactor and the second contactor is in a closed state at any time. Optionally, the mains supply is connected with a first battery replacing device in the battery replacing station through a first contactor, the first battery replacing device is connected with the charging device through a second contactor, only one of the first contactor and the second contactor is in a closed state at any moment, namely, the first battery replacing device is charged from the mains supply or supplies power to the charging device while not being operated, and therefore the operation safety of the first battery replacing device is improved.
As an alternative embodiment, the system further comprises: the third contactor is connected with the charging equipment and a second battery replacing equipment and is used for controlling the charging equipment to charge the second battery replacing equipment, the second battery replacing equipment is connected with a mains supply or the first battery replacing equipment through the fourth contactor, the fourth contactor is used for controlling the second battery replacing equipment to discharge, and only one of the third contactor and the fourth contactor is in a closed state at any moment. Optionally, the charging device is connected with a second battery replacement device in the battery replacement station through a third contactor, the second battery replacement device discharges through a fourth contactor, only one of the third contactor and the fourth contactor is in a closed state at any moment, that is, the charging or discharging of the second battery replacement device battery is not performed at the same time, and the operation safety of the second battery replacement device battery is ensured.
As an alternative embodiment, the system further comprises: the connecting device is used for connecting a first battery replacing device and the charging device, and the single-phase inverter device is located in the charging device and used for converting direct current provided by the first battery replacing device into alternating current. Optionally, the first battery replacing device and the charging device are connected through a connecting device, that is, a connecting plug-in, and the charging device includes a single-phase inverter device therein, which is configured to convert ac power output by the charging device into dc power when charging the second battery replacing device.
As an optional embodiment, fig. 2 is an overall schematic diagram of an optional electric vehicle charging system according to an embodiment of the present invention, as shown in fig. 2, a commercial power is used to charge a charging-side battery of a power conversion station, i.e., a first power conversion device battery, through an AC/DC bidirectional device, and the capacity of the charging-side battery is 200kWh, wherein a metering device, a collecting device, and a protection device are further disposed on a line connecting the first power conversion device battery and the commercial power, and the commercial power charges the first power conversion device battery with low power. The first battery replacing device converts the output direct current into 0.4kV alternating current through an inverter cabinet, namely an inverter filtering device, performs power amplification to supply power to the charging device by using 600kW power, the charging device comprises AC/DC unidirectional equipment, and the first battery replacing device converts the 600kW/0.4kV alternating current into 600kW/1000V direct current to charge a battery at a discharging side, namely a second battery replacing device battery, so that the function test of the charging device is realized. In addition, the discharge side battery has a capacity of 200kWh, and can be used for supplying power to a commercial power load or charging a charge side battery in a power exchange station. In the embodiment of the invention, high-power quick charging, battery replacement and function testing are integrated in one system, effective circulation of commercial power-charging-battery replacement-battery-discharging-commercial power is realized through energy cycle conversion, power grid dispatching can be responded, and the problem of high-power commercial power access is solved.
According to a second aspect of the embodiments of the present invention, there is further provided an electric vehicle charging method applied to the electric vehicle charging system in any one of the first aspect of the embodiments of the present invention, as shown in fig. 3, a process of the method may include the following steps:
and S301, controlling the first battery replacement device to be charged from the mains supply. Optionally, a first battery replacement device in the battery replacement station is controlled to be charged from the mains supply, and the charging state of the first battery replacement device is monitored. And step S302, controlling the charged first battery replacement device to discharge to the charging device. Optionally, when the charging of the first battery replacement device battery is completed, the charged first battery replacement device battery is controlled to discharge to the charging device, and the charging device may charge the electric vehicle, or may replace a battery in the electric vehicle with the charged first battery replacement device battery.
In the embodiment of the invention, at least one first battery replacing device is arranged in the battery replacing station, commercial power is used for charging the first battery replacing device, and the charged first battery replacing device is used for supplying power to the charging device, so that the purpose of charging the electric automobile by using the charging device is realized, or the charged first battery replacing device is replaced for the electric automobile to charge the electric automobile. The capacity of the first battery replacing device battery is configured according to specific charging requirements, the circuit is simple, the building cost is low, and the problem that the charging cost of the electric automobile is too high in the related technology is solved.
As an alternative embodiment, the method further comprises: the first power conversion equipment battery is controlled to be charged from the mains supply by closing the first contactor and opening the second contactor; the first contactor is disconnected, and the second contactor is closed to control the first battery replacing device to discharge to the charging device; the fourth contactor is disconnected by closing the third contactor to control the charging equipment to charge the battery of the second battery replacement equipment; the third contactor and the first contactor are disconnected, and the fourth contactor is closed to control a battery of the second power conversion equipment to supply power to the commercial power load; and the fourth contactor and the first contactor are closed to control the second battery replacing device to charge the first battery replacing device by disconnecting the third contactor and the protection device between the first battery replacing device and the mains supply.
Optionally, the first battery replacing device is connected with the mains supply through the first contactor, so that the first contactor is controlled to be closed/opened, the mains supply can charge/stop charging the first battery replacing device, and the second contactor is controlled to be closed/opened, so that the first battery replacing device can charge/stop charging the charging device. In order to ensure the safe operation of the first battery replacing device battery, the first contactor and the second contactor are controlled to be not closed simultaneously, when the first battery replacing device battery needs to be charged, the first contactor is only required to be closed to disconnect the second contactor, and when the first battery replacing device battery supplies power for the charging device, the second contactor is closed to disconnect the first contactor. Similarly, controlling the third contactor to be closed/opened may control the second battery replacement device to charge/stop charging, and controlling the fourth contactor to be closed/opened may control the second battery replacement device to discharge/stop discharging. When the second battery replacing device supplies power to the mains supply load, the third contactor on the charging side is disconnected, the fourth contactor on the discharging side is closed, and the first contactor connected with the mains supply and the first battery replacing device is disconnected, so that the second battery replacing device supplies power to the mains supply load. And the third contactor is disconnected, the disconnection of the protection equipment such as a circuit breaker or a contactor between the battery of the first battery replacing device and the mains supply is controlled, and the charging of the battery of the second battery replacing device for the battery of the first battery replacing device can be controlled by closing the fourth contactor and the first contactor. In the embodiment of the invention, different functions of the system can be realized by controlling the closing/opening of the contactor.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An electric vehicle charging system, the system comprising: trade power station and battery charging outfit, trade the power station and include at least one first trade electric equipment battery, trade first trade electric equipment battery in the power station and charge from the commercial power, the first trade electric equipment battery after charging does battery charging outfit supplies power, wherein, battery charging outfit is used for charging for electric automobile.
2. The electric vehicle charging system of claim 1, wherein the battery swapping station further comprises a second battery swapping device, the charging device charges the second battery swapping device, and the second battery swapping device is used for performing a functional test on the charging device, wherein the functional test comprises testing the current and power of the charging device.
3. The electric vehicle charging system of claim 2, wherein the second charging device battery is further configured to supply power to a utility power load or charge the first charging device battery in the charging station.
4. The electric vehicle charging system of claim 1, further comprising: the power line protection system comprises AC/DC bidirectional equipment, a metering device, a collecting device and a protecting device, wherein a first power conversion equipment battery in the power conversion station is charged from a mains supply through the AC/DC bidirectional equipment, the metering device, the collecting device and the protecting device, and the AC/DC bidirectional equipment, the metering device, the collecting device and the protecting device are respectively used for converting alternating current into direct current, recording power generation/supply quantity, measuring power parameters and protecting the safe operation of a power line.
5. The electric vehicle charging system of claim 2, further comprising: the first battery replacing device supplies power to the charging device through the inverter filtering device, and the inverter filtering device is used for converting direct current into alternating current and amplifying power.
6. The electric vehicle charging system of claim 1, further comprising: the first contactor is connected with a commercial power supply and the first battery replacing device and used for controlling the first battery replacing device to charge, the second contactor is connected with the first battery replacing device and the charging device and used for controlling the first battery replacing device to charge, and only one of the first contactor and the second contactor is in a closed state at any moment.
7. The electric vehicle charging system of claim 2, further comprising: the third contactor is connected with a charging device and a second battery replacing device battery and used for controlling the charging device to charge the second battery replacing device battery, the second battery replacing device battery is connected with a mains supply or the first battery replacing device battery through the fourth contactor, the fourth contactor is used for controlling the second battery replacing device battery to discharge, and only one of the third contactor and the fourth contactor is in a closed state at any moment.
8. The electric vehicle charging system of claim 2, further comprising: the connecting device is used for connecting a first battery replacing device and charging equipment, and the single-phase inverter is located in the charging equipment and used for converting direct current provided by the first battery replacing device into alternating current.
9. An electric vehicle charging method applied to the electric vehicle charging system according to any one of claims 1 to 8, the method comprising:
controlling a first battery replacing device to be charged from commercial power;
and controlling the charged battery of the first battery replacement device to discharge to the charging device.
10. The method of charging an electric vehicle of claim 9, further comprising:
the first power conversion equipment battery is controlled to be charged from the mains supply by closing the first contactor and opening the second contactor;
the first contactor is opened, the second contactor is closed, and the first battery replacing device is controlled to discharge the battery to the charging device;
the charging equipment is controlled to charge the battery of the second battery replacement equipment by closing the third contactor and opening the fourth contactor;
by disconnecting the third contactor and the first contactor, closing the fourth contactor to control the second battery replacement device to supply power to the mains supply load;
and closing the fourth contactor and the first contactor to control the second battery replacing device to charge the first battery replacing device by disconnecting the third contactor and the protection device between the first battery replacing device and the mains supply.
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| CN202211632318.2A CN115848322A (en) | 2022-12-19 | 2022-12-19 | Electric vehicle charging system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081131A (en) * | 2023-10-16 | 2023-11-17 | 蓝谷智慧(北京)能源科技有限公司 | Circuit system, control method and device of charging and replacing station |
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| CN209375232U (en) * | 2018-11-23 | 2019-09-10 | 河南三元创鑫智能科技有限公司 | A kind of small micro- station AC/DC integrated power supply |
| CN110239382A (en) * | 2019-06-27 | 2019-09-17 | 上海电机学院 | A kind of electric car charge-discharge system |
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| CN114335767A (en) * | 2022-03-03 | 2022-04-12 | 徐州徐工新能源汽车有限公司 | Battery assembly, electric automobile, battery replacement station and charging method |
| CN114750629A (en) * | 2022-05-19 | 2022-07-15 | 上海优续新能源科技有限公司 | Charging and discharging battery replacing method and device for electric automobile |
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| CN117081131A (en) * | 2023-10-16 | 2023-11-17 | 蓝谷智慧(北京)能源科技有限公司 | Circuit system, control method and device of charging and replacing station |
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