CN202906510U - Electric vehicle charging pile - Google Patents
Electric vehicle charging pile Download PDFInfo
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- CN202906510U CN202906510U CN 201220497488 CN201220497488U CN202906510U CN 202906510 U CN202906510 U CN 202906510U CN 201220497488 CN201220497488 CN 201220497488 CN 201220497488 U CN201220497488 U CN 201220497488U CN 202906510 U CN202906510 U CN 202906510U
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- 238000007600 charging Methods 0.000 title claims abstract description 168
- 238000004146 energy storage Methods 0.000 claims abstract description 105
- 238000004891 communication Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims description 27
- 238000007599 discharging Methods 0.000 claims description 11
- 238000010248 power generation Methods 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 238000010277 constant-current charging Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model provides an electric vehicle charging pile. The charging pile comprises a control unit, an energy storage module, a communication module, an energy scheduling module and an output interface. The control unit is in control connection with the communication unit, the energy scheduling module and the output interface. The energy storage module and the energy scheduling module are interconnected. The energy storage module stores electric energy. The communication module communicates with a distribution network system, and receives instructions of the distribution network system. The instructions of the distribution network system comprise the power grid load condition. The energy scheduling module confirms an electric energy supply source of the charging pile according to the power grid load condition, the energy storage module condition, and the user need. The output interface confirms the electric energy supply source according to the energy scheduling module, and outputs the power supply provided by the power grid or the power grid and the energy storage module to a user electric vehicle.
Description
Technical Field
The utility model relates to an electric automobile fills and trades electric technical field, concretely relates to electric automobile fills electric pile.
Background
Electric vehicles, especially pure electric vehicles, use electricity as an energy source, have the advantages of low emission, high energy use efficiency and the like, and are the main choice for replacing fuel vehicles. Under the increasingly prominent situation of global energy and environmental problems, the development of electric automobiles becomes an important way for getting rid of the dependence of petroleum resources, realizing energy conservation and emission reduction and relieving the energy and environmental problems. One of the core technologies of electric vehicles is an energy storage and supply system, a technology for using and rapidly replacing a storage battery, and a technology for charging and replacing a power station of an electric vehicle, which become key technologies for the industrial development of electric vehicles.
Some difficulties and problems that appear in the construction of service network infrastructures such as a charging and replacing station in the prior art restrict the construction of the whole operation service network more and more, and the problems existing in the prior art include: the urban land is short, and the construction of the electric automobile charging and exchanging station faces the problems of how to reduce the occupied area as much as possible, improve the effective utilization area and optimize the service network planning of the electric automobile; secondly, the construction of the electric vehicle charging and replacing station needs to go through three basic stages of planning and site selection in the early stage, expropriation and approval, foundation building construction in the middle stage, equipment installation and debugging in the later stage and the like, and the whole construction period consumes a long time; thirdly, the power battery of the electric automobile is limited by operating environment factors, the battery charging and storing environment of the currently-built charging and replacing station is not ideal enough, good constant temperature, low humidity, ventilation and dustproof effects are not achieved, the power battery is in a relatively open environment for a long time, and is easily influenced by seasonal factors and clean environment in the station damaged by vehicle running, so that the battery state is low in good rate, the service life is short, and the charging and discharging efficiency is unstable.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of electric automobile charging pile, the charging pile comprises a control unit, an energy storage module, a communication module, an energy scheduling module and an output interface, the control unit controls and connects the communication module, the energy scheduling module and the output interface, and the energy storage module and the energy scheduling module are connected with each other; the energy storage module stores electric energy; the communication module is communicated with a power distribution network system and receives an instruction of the power distribution network system, wherein the instruction of the power distribution network system comprises a power grid load condition; the energy scheduling module determines an electric energy supply source of the charging pile according to the power grid load condition, the energy storage module condition and the user demand; and the output interface determines an electric energy supply source according to the energy scheduling module and outputs the power supply provided by the power grid or the power grid and the energy storage module to the user electric automobile.
The utility model provides a first preferred embodiment: the communication module comprises a GPRS interface, an Ethernet interface supporting TCP/IP, a CAN bus communication interface, a PLC communication interface, a Zigbee bus communication interface and 3G and 4G wireless communication interfaces.
The utility model provides a second preferred embodiment: the charging pile comprises a charging metering module and a card swiping module;
the charging and metering module comprises an energy charging module of an energy storage module and a charging and metering module of charging energy of the electric automobile;
the energy charging module of the energy storage module is used for charging the energy of the energy storage module under the condition that the energy storage module participates in charging work;
the charging energy charging module of the electric automobile is used for charging the energy charged by the user electric automobile according to the energy charging module of the energy storage module and the electric energy consumed by the power grid;
the card swiping module is used for identifying the identity of the user electric automobile when the user electric automobile starts charging, and settling the charge of the charging energy of the electric automobile calculated by the charging metering module after charging is finished.
The utility model provides a third preferred embodiment: the charging pile comprises a human-computer interface module;
the man-machine interface module comprises a display screen, and the display screen displays the information of voltage, electric quantity and current, charging time and charging cost in the charging process to a user.
The utility model provides a fourth preferred embodiment: the charging pile comprises a charging process protection module, and the charging process protection module is used for performing leakage protection and overcurrent protection on the charging pile and the user electric automobile.
The utility model provides a fifth preferred embodiment: the energy storage module is used for storing electric energy by utilizing a power grid or solar energy at the time of the valley of the power grid, and comprises a charging and discharging control unit, a photovoltaic power generation module, a PWM module, a DC/DC module A, DC/DC module B and an energy storage unit, wherein the energy scheduling module is connected with the charging and discharging control unit, the energy storage unit and the DC/DC module A;
one end of the DC/DC module A is connected with the photovoltaic power generation module, and the other end of the DC/DC module A is connected with the energy storage unit or the energy scheduling module;
the charging and discharging control unit is connected with the PWM module and the DC/DC module B in a control mode, one end of the DC/DC module B is connected with the PWM module, and the other end of the DC/DC module B is connected with the energy storage unit.
The utility model provides a sixth preferred embodiment: the capacity Q of the power lithium battery is as follows:
wherein, U2lIs the voltage of the power battery on the vehicle, t is the charging time, h is the corrected value of the charging time, U1lThe terminal voltage of the energy storage module corresponding to the SOC of the energy storage battery is 15%;
the capacitance value C of the super capacitor is as follows:
wherein, U2The voltage of the power battery terminal is U when the constant current stage is converted into the constant voltage stage in the charging process1Charging initial voltage for the power battery, wherein I is the current value in the constant current stage, delta I is the current reduction step length in the constant voltage process, and t1Is the constant current charging time length, delta t is the time corresponding to the current reduction delta I,
is the fraction of a small time period equally divided in the constant pressure phase, and t is the total duration of the constant pressure phase.
The utility model provides a pair of electric automobile fills electric pile's beneficial effect includes:
1. the utility model provides an electric automobile fills electric pile should fill electric pile includes energy storage module and communication module, is controlled by same management platform and manages, accepts the instruction of distribution network system, because when the unsatisfied electric automobile demand of charging of electric wire netting reason, can charge user's electric automobile with energy storage module, actively participates in the friendly interdynamic of electric wire netting.
2. The charging pile further comprises an energy scheduling module, and the energy scheduling module determines an electric energy supply source of the charging pile according to the power grid load condition, the energy storage module condition and the user demand.
3. The energy storage module can store electric energy by utilizing the power grid or solar energy at the time of the valley of the power grid.
4. The charging pile comprises a charging metering module, a card swiping module, a man-machine interface module and a charging process protection module, wherein the charging metering module is used for charging the energy charged by the user electric automobile, the card swiping module is used for identifying the identity of the user electric automobile, and the charge of the energy charged by the electric automobile is settled after the charging is finished; the man-machine interface module displays information such as voltage, electric quantity and current in the charging process, charging time, charging cost and the like to a user; the charging process protection module performs leakage protection and overcurrent protection.
Drawings
Fig. 1 is a schematic structural diagram of a charging pile provided by the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a charging pile provided in the present invention;
fig. 3 is a flowchart of a method for operating a charging pile according to the present invention;
FIG. 4 is a flow chart of the energy storage module provided by the present invention for charging a user electric vehicle;
fig. 5 is a flowchart of charging the energy storage module according to the present invention.
Detailed Description
The utility model provides a pair of electric automobile fills electric pile, this fill electric pile's structural schematic diagram is shown in FIG. 1, including the control unit, energy storage module, communication module, energy scheduling module and output interface, the control unit control connection communication module, energy scheduling module and output interface, energy storage module and energy scheduling module interconnect.
The energy storage module stores electric energy.
The communication module is communicated with the power distribution network system and receives an instruction of the power distribution network system, wherein the instruction of the power distribution network system comprises the power distribution network load condition.
And the energy dispatching module determines the electric energy supply source of the charging pile according to the load condition of the power grid, the condition of the energy storage module and the user demand.
And the output interface outputs the power supply provided by the power grid or the power grid and the energy storage module to the electric automobile according to the electric energy supply source determined by the energy scheduling module.
The first embodiment is as follows:
the utility model provides an embodiment one is an electric automobile fills electric pile's embodiment, and the structural schematic diagram of this embodiment of filling electric pile is shown as figure 2, including the control unit, energy storage module, communication module, energy scheduling module, output interface, charging metering module, the module of punching the card, man-machine interface module and charging process protection module, the control unit control connection communication module, energy scheduling module, output interface, charging metering module, the module of punching the card, man-machine interface module and charging process protection module, energy storage module and energy scheduling module interconnect.
The communication module comprises a GPRS interface, an Ethernet interface supporting TCP/IP, a CAN bus communication interface, a PLC (Programmable Logic Controller) communication interface, a Zigbee bus communication interface and 3G and 4G wireless communication interfaces.
The charging and metering module comprises an energy charging module and an electric automobile charging energy charging module, the energy charging module of the energy storage module is used for charging the energy of the energy storage module under the condition that the energy storage module participates in charging work, and the electric automobile charging energy charging module is used for charging the energy charged by the electric automobile according to the energy charging module of the energy storage module and the electric energy consumed by the power grid.
The card swiping module is used for identifying the identity of the charging user when the user starts charging, and settling the charge of the charging energy of the electric automobile calculated by the charging metering module after charging is finished.
The man-machine interface module comprises a display screen, and the display screen displays information such as voltage, electric quantity and current in the charging process, charging time, charging cost and the like to a user.
The charging process protection module carries out leakage protection and overcurrent protection on the charging pile and the charging electric automobile.
The energy storage module comprises a charging and discharging control unit, a photovoltaic power generation module, a PWM (Pulse Width Modulation) module, a DC/DC module A, DC/DC module B and an energy storage unit, and the energy scheduling module is connected with the charging and discharging control unit, the energy storage unit and the DC/DC module A.
The photovoltaic power generation module converts solar light energy into electric energy, fixed direct current voltage is converted into variable direct current voltage through the DC/DC module A, and the variable direct current voltage is sent to the energy storage unit for storage. The charging and discharging control unit is connected with the PWM module and the DC/DC module B in a control mode, electric energy transmitted to the energy storage module at the time of the power grid valley is converted into direct current through the PWM module, fixed direct current voltage is converted into variable direct current voltage through the DC/DC module B, and the variable direct current voltage is transmitted to the energy storage unit for storage.
The energy storage unit comprises a power battery and a super capacitor, and secondary utilization of the power battery is realized. Wherein, power battery is the power lithium cell, and super capacitor's capacitance value C is:
wherein, U2The voltage of the power battery terminal is U when the constant current stage is converted into the constant voltage stage in the charging process1Charging initial voltage for the power battery, wherein I is the current value in the constant current stage, delta I is the current reduction step length in the constant voltage process, and t1Is the constant current charging time length, delta t is the time corresponding to the current reduction delta I,
is the fraction of a small time period equally divided in the constant pressure phase, and t is the total duration of the constant pressure phase.
The capacity Q of the power lithium battery is as follows:
wherein U is2lIs the voltage of the power battery on the vehicle, t is the charging time, h is the corrected value of the charging time, U1lThe voltage is the energy storage module terminal voltage (the voltage corresponding to 15% of the energy storage battery SOC).
Example two:
the utility model provides an embodiment two does the utility model provides a pair of fill operation method of electric pile fills electric pile and is controlled by same management platform and manages, under the electric wire netting normal circumstances, fills electric pile and carries out the electric energy supply to user's electric automobile by the external power supply that the electric wire netting provided, when electric wire netting load is great, can charge user's electric automobile through energy storage module, the flow chart of this operation method is shown in fig. 3, include:
and step S1, the charging pile starts charging according to the charging requirement of the user electric automobile.
And step S2, judging whether the command of the power distribution network system is received, if so, executing step S3, and if not, directly charging the user electric automobile by using the electric energy of the power grid according to the charging requirement of the user electric automobile.
When the load of the power grid is large, the power distribution network system sends an instruction to the charging pile, and the instruction contains the load which can be provided by the current power grid.
Step S3, calculating a load difference value which is the difference between the charging requirement of the user electric automobile and the load which can be provided by the power grid, judging whether the load difference value is a positive value, if so, executing step S4, and if not, directly charging the user electric automobile by using the electric energy of the power grid according to the charging requirement of the user electric automobile.
And step S4, determining the discharge current of the energy storage module according to the rated power of the vehicle-mounted charger and the acceptable direct-current discharge rate of the energy storage module.
Preferably, after determining the starting time point of the energy storage module as the charging power source in step S4, the flowchart of charging the user electric vehicle by the energy storage module is shown in fig. 4, and includes:
step S401, when the initial time point of the energy storage module as a charging power supply is reached, judging whether the SOC (state of charge, ratio of the residual capacity of the storage battery to the capacity of the fully charged state) value of the power battery of the energy storage module is larger than a suggested value, if so, executing step S402; otherwise, step S403 is performed.
The SOC value of the power battery is set to be larger than the recommended value so as to avoid deep discharge of the battery and prolong the service life of the energy storage battery, and the recommended value is preferably 15%.
Step S402, the energy storage module charges the user charging automobile until the charging process is finished, whether the SOC value of the power battery is larger than the suggested value or not is continuously judged in the charging process, and step S403 is executed once the SOC value of the power battery is not larger than the suggested value.
Preferably, in step S402, the energy storage module charges the user-charged vehicle and detects whether the power grid is in a peak period, if so, the energy storage charging is stopped, and the power grid is used for charging, and if the power grid is in a peak load all the time during the charging process, the energy storage module is used for charging. The user can charge by adopting the electric energy of the power grid as much as possible, the energy consumed during energy storage and release is reduced, the charging and discharging times of the power battery are reduced as much as possible, and the service life of the battery is prolonged.
And S403, judging whether the current power consumption requirement of the user is met, and if the current power consumption requirement of the user is not met, applying to a power grid for carrying out alternating current charging on the user electric vehicle by the upper-level monitoring system.
The embodiment of the utility model provides a pair of charging pile's operation method, if the load value that the electric wire netting can provide at this moment is greater than to user electric automobile's the demand of charging when starting the task of charging, charge to user electric automobile through energy storage module to calculate energy storage module as charging source's initial time point.
When the starting time point of the energy storage module serving as a charging power supply is reached, if the energy storage module cannot charge the user electric automobile at the moment, and because the load of the power grid changes in real time, whether the current power consumption needs of the user are met needs to be judged, and if the current power consumption needs of the user are not met, the upper-level monitoring system applies for alternating current charging of the user electric automobile.
If the power demand of the user is met, the user electric automobile cannot be charged because the SOC value of the current energy storage module is smaller than the recommended value, so the method further comprises a step S5 of charging the energy storage module.
The process of charging the energy storage module in step S5 is shown in fig. 5, and includes:
step S501, judging whether the photovoltaic power generation module can work, if so, executing step S502, otherwise, when the power grid load condition allows the energy storage module to be charged, charging the energy storage module through the power grid, and executing step S504.
The photovoltaic power generation module is connected with the energy storage unit and the energy scheduling module, and can be started to store energy in the energy storage unit or directly charge the user electric automobile when the external environment meets the working state.
Step S502, judging whether the energy storage module is charged by the power grid, if so, stopping charging the energy storage module by the power grid, and executing step S503.
And step S503, starting the photovoltaic power generation module to charge the energy storage module, and executing step S504.
And step S504, stopping charging when the energy storage requirement of the energy storage module is met.
Fill electric pile in the operation, also can real time monitoring energy storage module' S energy storage condition, not reach the energy storage requirement at energy storage module and charge to energy storage module, consequently, still include before the above-mentioned step S501:
and step S501', judging whether the energy storage module meets the energy storage requirement in real time, and executing the step S501 when the energy storage module does not meet the energy storage requirement.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which should be construed to be within the scope of the claims.
Claims (7)
1. The charging pile for the electric automobile is characterized by comprising a control unit, an energy storage module, a communication module, an energy scheduling module and an output interface, wherein the control unit is in control connection with the communication module, the energy scheduling module and the output interface, and the energy storage module is connected with the energy scheduling module;
the energy storage module stores electric energy;
the communication module is communicated with a power distribution network system and receives an instruction of the power distribution network system, wherein the instruction of the power distribution network system comprises a power grid load condition;
the energy scheduling module determines an electric energy supply source of the charging pile according to the power grid load condition, the energy storage module condition and the user demand;
and the output interface determines an electric energy supply source according to the energy scheduling module and outputs the power supply provided by the power grid or the power grid and the energy storage module to the user electric automobile.
2. The charging pile of claim 1, wherein the communication module comprises a GPRS interface, a TCP/IP-enabled ethernet interface, a CAN bus communication interface, a PLC communication interface, a Zigbee bus communication interface, and a 3G, 4G wireless communication interface.
3. The charging pole according to claim 1, wherein the charging pole comprises a billing metering module and a card swiping module;
the charging and metering module comprises an energy charging module of an energy storage module and a charging and metering module of charging energy of the electric automobile;
the energy charging module of the energy storage module is used for charging the energy of the energy storage module under the condition that the energy storage module participates in charging work;
the charging energy charging module of the electric automobile is used for charging the energy charged by the user electric automobile according to the energy charging module of the energy storage module and the electric energy consumed by the power grid;
the card swiping module is used for identifying the identity of the user electric automobile when the user electric automobile starts charging, and settling the charge of the charging energy of the electric automobile calculated by the charging metering module after charging is finished.
4. The charging pole of claim 1, wherein the charging pole comprises a human machine interface module;
the man-machine interface module comprises a display screen, and the display screen displays the information of voltage, electric quantity and current, charging time and charging cost in the charging process to a user.
5. The charging pole according to claim 1, characterized in that the charging pole comprises a charging process protection module, which performs earth leakage protection and overcurrent protection on the charging pole and the user electric vehicle.
6. The charging pile according to claim 1, wherein the energy storage module is used for storing electric energy by using a power grid or solar energy at the time of a low ebb of the power grid, and comprises a charging and discharging control unit, a photovoltaic power generation module, a PWM module, a DC/DC module A, DC/DC module B and an energy storage unit, and the energy scheduling module is connected with the charging and discharging control unit, the energy storage unit and the DC/DC module A;
one end of the DC/DC module A is connected with the photovoltaic power generation module, and the other end of the DC/DC module A is connected with the energy storage unit or the energy scheduling module;
the charging and discharging control unit is connected with the PWM module and the DC/DC module B in a control mode, one end of the DC/DC module B is connected with the PWM module, and the other end of the DC/DC module B is connected with the energy storage unit.
7. The charging pile according to claim 6, wherein the energy storage unit comprises a power battery and a super capacitor, and the power battery is a power lithium battery;
the capacity Q of the power lithium battery is as follows:
wherein,U2lis the voltage of the power battery on the vehicle, t is the charging time, h is the corrected value of the charging time, U1lThe terminal voltage of the energy storage module corresponding to the SOC of the energy storage battery is 15%;
the capacitance value C of the super capacitor is as follows:
wherein, U2The voltage of the power battery terminal is U when the constant current stage is converted into the constant voltage stage in the charging process1Charging initial voltage for the power battery, wherein I is the current value in the constant current stage, delta I is the current reduction step length in the constant voltage process, and t1Is the constant current charging time length, delta t is the time corresponding to the current reduction delta I,
is the fraction of a small time period equally divided in the constant pressure phase, and t is the total duration of the constant pressure phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201220497488 CN202906510U (en) | 2012-09-26 | 2012-09-26 | Electric vehicle charging pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220497488 CN202906510U (en) | 2012-09-26 | 2012-09-26 | Electric vehicle charging pile |
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| CN202906510U true CN202906510U (en) | 2013-04-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903186A (en) * | 2012-09-26 | 2013-01-30 | 北京国网普瑞特高压输电技术有限公司 | Electromobile charging pile and operating method thereof |
| CN106356920A (en) * | 2016-08-31 | 2017-01-25 | 北京博望华科科技有限公司 | Electric vehicle charging management system and method |
| WO2017088334A1 (en) * | 2015-11-25 | 2017-06-01 | 刘洋 | Wireless communication technology-based charging pile using off-grid photovoltaic power generation |
-
2012
- 2012-09-26 CN CN 201220497488 patent/CN202906510U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903186A (en) * | 2012-09-26 | 2013-01-30 | 北京国网普瑞特高压输电技术有限公司 | Electromobile charging pile and operating method thereof |
| WO2017088334A1 (en) * | 2015-11-25 | 2017-06-01 | 刘洋 | Wireless communication technology-based charging pile using off-grid photovoltaic power generation |
| CN106356920A (en) * | 2016-08-31 | 2017-01-25 | 北京博望华科科技有限公司 | Electric vehicle charging management system and method |
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Granted publication date: 20130424 |