阅读说明：本技术 一种基于退役电池储能的光电耦合利用智能充电桩及方法 (Photoelectric coupling utilization intelligent charging pile and method based on energy storage of retired battery ) 是由 魏进家 杨豆豆 刘逸林 杨毅帆 赵春雨 王子昂 于 2020-06-09 设计创作，主要内容包括：本发明公开了一种基于退役电池储能的光电耦合利用智能充电桩及方法,包括光伏电源、交流电网和电动汽车三个终端,光伏电源的输出端连接至电力分配控制体,电力分配控制体的输出端连接至电网开关和模块转换器,交流电网的输出端连接至电网开关,电网开关的输出端通过交直流转换器连接至模块转换器,模块转换器的一个支路通过退役电池堆连接至电动汽车,另一个支路直接连接至电动汽车,退役电池堆的电量通过电力分配控制体监测,电力分配控制体根据退役电池堆的电量控制电网开关为退役电池堆进行充电。本发明充分利用退役电池,依靠太阳能为电力分配控制器供电,来控制退役电池储存电网谷电盈余,满足电动汽车需求,并在实现削峰填谷的目的。(The invention discloses an intelligent charging pile and an intelligent charging method based on photoelectric coupling utilization of retired battery energy storage, and the intelligent charging pile comprises three terminals, namely a photovoltaic power supply, an alternating current power grid and an electric vehicle, wherein the output end of the photovoltaic power supply is connected to a power distribution control body, the output end of the power distribution control body is connected to a power grid switch and a module converter, the output end of the alternating current power grid is connected to the power grid switch, the output end of the power grid switch is connected to the module converter through an alternating current-direct current converter, one branch of the module converter is connected to the electric vehicle through a retired battery stack, the other branch is directly connected to the electric vehicle, the electric quantity of the retired battery stack is monitored through the power distribution control body, and the power distribution control. The invention fully utilizes the retired battery, supplies power to the power distribution controller by solar energy, controls the retired battery to store the surplus of valley electricity of the power grid, meets the requirements of the electric automobile, and achieves the purposes of peak clipping and valley filling.)

1. The utility model provides a photoelectric coupling utilizes intelligent charging stake based on retired battery energy storage, a serial communication port, including photovoltaic power supply, three terminals of alternating current network and electric automobile, photovoltaic power supply's output is connected to the electric power distribution control body, the output of the electric power distribution control body is connected to grid switch and module converter, alternating current network's output is connected to the grid switch, the output of grid switch is connected to the module converter through the alternating current-direct current converter, a branch road of module converter is connected to electric automobile through retired battery pile, another branch road lug connection to electric automobile, the electric quantity of retired battery pile passes through the monitoring of electric power distribution control body, the electric power distribution control body charges for retired battery pile according to the electric quantity control grid switch of retired battery pile.

2. The photoelectric coupling based on retired battery energy storage utilizes intelligent charging stake of claim 1, characterized in that, the retired battery stack includes a plurality of retired battery module, retired battery module includes two supports (5) that the symmetry set up, support the connection through a plurality of ribs (6) between two supports (5), a plurality of retired battery module (8) are provided to the symmetry between two supports (5), form the module passageway between a plurality of retired battery module (8), the outside of each retired battery module (8) all is provided with backplate (7), two first horizontal rectangle holes have been seted up symmetrically on backplate (7).

3. The photoelectric coupling based on retired battery energy storage utilizes intelligent charging stake of claim 2, characterized in that, retired battery module (8) includes two apron (2) that the symmetry set up, the inboard of each apron (2) all is fixed with orifice plate (4), be provided with a plurality of battery monomer (3) between two orifice plate (4), and battery monomer (3) and the mounting hole cooperation connection on two orifice plates (4), the whole middle part that a plurality of battery monomer (3) formed is provided with the module passageway, and be provided with a plurality of curb plates (1) around the whole that a plurality of battery monomer (3) formed, two second rectangle horizontal holes have been seted up on curb plate (1) symmetrically.

4. The photoelectric coupling based on retired battery energy storage utilizes intelligent charging stake of claim 3, characterized in that, apron (2) and orifice plate (4) are regular hexagon, and 13 mounting holes have been presented central symmetry distribution on orifice plate (4), and the position that corresponds with middle mounting hole on apron (2) is provided with the through-hole, forms the module passageway between the through-hole on two apron (2), is provided with battery monomer (3) respectively in the other 12 mounting holes, is provided with 6 curb plates (1) around the whole that 12 battery monomer (3) formed, and two second rectangle horizontal holes on curb plate (1) correspond the positive pole and the negative pole of battery monomer (3) respectively.

5. The photoelectric coupling based on retired battery energy storage intelligent charging pile according to claim 4, wherein two opposite blowing fans capable of blowing cold air into the module channel are respectively arranged on two sides of the module channel.

6. The photoelectric coupling based on retired battery energy storage utilizes intelligent charging stake of claim 4, characterized in that, 6 retired battery module (8) are provided between two supports (5) symmetrically, form regular hexagon's module passageway between 6 retired battery module (8), the outside of every retired battery module (8) all is provided with can cover backplate (7) of retired battery module (8) three side, two first rectangle transverse holes have been seted up on the mid-plane of backplate (7) symmetrically.

7. The photoelectric coupling based on retired battery energy storage of claim 6, wherein a plurality of retired battery modules are stacked to form a retired battery stack, module channels of the plurality of retired battery modules are communicated to form a whole channel, and an auxiliary fan is disposed at one end of the whole channel.

8. A photoelectric coupling utilization intelligent charging method based on retired battery energy storage, which adopts the photoelectric coupling utilization intelligent charging pile based on retired battery energy storage of claim 1, it is characterized in that the power distribution control body is powered by a photovoltaic power supply to realize the functions of input and output distribution of the electric power of the charging pile, when the alternating current network power is at a valley value and the charging pile is in a non-use state, the power distribution control body adjusts the module converter to a retired battery pile circuit, the retired battery pile is in a charging state, and according to the feedback condition of the residual electric quantity of the retired battery pile, a power grid switch is opened to control the AC power grid to charge the direct current to the retired battery pile through an AC-DC converter, when the charging pile is in a use state, and the power distribution control body controls the module converter to output the alternating current power grid or the retired battery stack power to the electric automobile according to user selection.

Technical Field

The invention belongs to the technical field of energy science, and particularly relates to an intelligent charging pile and method based on photoelectric coupling utilization of retired battery energy storage.

Background

Under the trend of advocating low carbon green environmental protection vigorously at present, traditional oil, petroleum gas drive car is being replaced by novel electric automobile gradually, however along with the increase of a large amount of electric automobile mileage, produced many and can not satisfy the continuation of the journey requirement but not thoroughly unusable car batteries, these retired batteries can also continue its life through the mode such as slow charging, compare in the high cost that the direct recovery of battery was spent, the reutilization of retired battery obviously plays energy saving and emission reduction's effect.

At first, present fill electric pile for fixed electric pile that fills, compare in traditional car can be at any time from the fuel of possessing, electric automobile is difficult to realize that the fuel reserves at any time, and under the condition of electric quantity not enough and near not having the electric pile that fills, will lead to electric automobile to lose use value.

Secondly, the current power supply capacity of China is between the peak value and the valley value of power utilization, the phenomenon of short supply and short demand will occur in the peak period of power utilization, meanwhile, the peak value power price and the valley value power price are also greatly different, how to reasonably utilize peak clipping and valley filling to reduce the power utilization cost brings certain profits for enterprises, and the method is a hotspot with high market benefit.

At last, the battery energy storage can be incorporated into the power grid for power utilization only through alternating current-direct current conversion at present, and the charging of the electric automobile needs direct current.

Disclosure of Invention

The invention aims to provide a photoelectric coupling utilization intelligent charging pile and a photoelectric coupling utilization intelligent charging method based on energy storage of a retired battery, so as to overcome the defects in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a photoelectric coupling utilizes intelligent charging stake based on retired battery energy storage, including photovoltaic power supply, three terminal of alternating current network and electric automobile, photovoltaic power supply's output is connected to the electric power distribution control body, the output of the electric power distribution control body is connected to grid switch and module converter, alternating current network's output is connected to the grid switch, the output of grid switch is connected to the module converter through AC/DC converter, a branch road of module converter is connected to electric automobile through retired battery pile, another branch road lug connection to electric automobile, the electric quantity of retired battery pile passes through the monitoring of electric power distribution control body, the electric power distribution control body charges for retired battery pile according to the electric quantity control grid switch of retired battery pile.

Further, the decommissioning battery stack includes a plurality of decommissioning battery modules, the decommissioning battery module includes two supports that the symmetry set up, supports through a plurality of ribs between two supports and connects, and the symmetry is provided with a plurality of decommissioning battery modules between two supports, forms the module passageway between a plurality of decommissioning battery modules, and every decommissioning battery module's the outside all is provided with the backplate, and two first rectangle transverse holes have been seted up to the symmetry on the backplate.

Further, retired battery module includes the apron that two symmetries set up, and the inboard of every apron all is fixed with the orifice plate, is provided with a plurality of battery monomers between two orifice plates, and the mounting hole cooperation is connected on battery monomer and two orifice plates, and the whole middle part that a plurality of battery monomers formed is provided with the module passageway, and is provided with a plurality of curb plates around the whole that a plurality of battery monomers formed, and two rectangle horizontal holes of second have been seted up to the symmetry on the curb plate.

Further, apron and orifice plate are regular hexagon, are central symmetry on the orifice plate and distribute 13 mounting holes, and the position that corresponds with middle mounting hole on the apron is provided with the through-hole, forms the module passageway between the through-hole on two apron, is provided with battery monomer in 12 mounting holes respectively in addition, is provided with 6 curb plates around 12 single battery forming's whole, and two rectangular transverse holes of second on the curb plate correspond battery monomer anodal and negative pole respectively.

Furthermore, two sides of the module channel are respectively provided with a blowing fan which can blow cold air into the module channel.

Further, the symmetry is provided with 6 decommissioning battery modules between two supports, forms regular hexagon's module passageway between 6 decommissioning battery modules, and every decommissioning battery module's the outside all is provided with the backplate that can cover the three side of decommissioning battery module, and two first rectangle transverse holes have been seted up to the symmetry on the mid-plane of backplate.

Further, a plurality of decommissioned battery modules form the decommissioned battery stack through range upon range of, and the module passageway intercommunication of a plurality of decommissioned battery modules forms overall channel jointly, and the one end of overall channel is provided with auxiliary fan.

A photoelectric coupling utilization intelligent charging method based on retired battery energy storage is characterized in that a power distribution control body is powered by a photovoltaic power supply to achieve the input and output distribution functions of charging pile power, when alternating current grid power is at a valley value and the charging pile is in a non-use state, the power distribution control body adjusts a module converter to a retired battery pile circuit, a retired battery pile is in a charging state, a grid switch is turned on according to the feedback condition of surplus electric quantity of the retired battery pile, the alternating current grid power is controlled to charge direct current to the retired battery pile through an alternating current-direct current converter, and when the charging pile is in a use state, the power distribution control body controls the module converter to output the alternating current grid power or the retired battery pile power to an electric automobile according to user selection.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention realizes the re-integration application of the retired battery, takes the power distribution control body powered by the photovoltaic power supply and the module converter controlled by the power distribution control body as the center, charges the retired battery stack by collecting the residual electricity quantity condition of the retired battery stack during electricity storage and selecting to charge the retired battery stack when the power grid is at the valley and the charging pile is not in use, and transfers the power supply mode to the low-price power supply mode of the battery or the standard power price power supply mode of the national power grid to realize the quick charge of the electric automobile according to the selected condition of a user during power supply. The intelligent combination of power grid alternating current and retired battery storage and discharge is realized to this system, and the electric quantity surplus when collecting the electric wire netting millet electricity realizes filling more economic energy supply of electric pile and alleviates partial electric wire netting peak value electricity pressure when practicing thrift the cost.

When the retired battery is applied in an integrated mode, the bionic structure is reasonably utilized, the module and the module coupling mechanism which are good in heat dissipation performance are arranged, cold air blown up and down through the central through holes of the 6 regular hexagons on the periphery of the end face of the module enters the central through holes to form local turbulence, hot air flows out of the central regular hexagons and the side faces of the end face to form an air circulation system which is good in heat dissipation effect, the charging pile has a movable function, the charging convenience is greatly improved, and a commercial industrial chain is easy to stimulate to form.

Drawings

FIG. 1 is a functional schematic diagram of a charging pile according to the present invention;

FIG. 2 is a top view of an ex-service battery module of the present invention;

FIG. 3 is a schematic diagram of the heat dissipation of a decommissioned battery module according to the present invention;

fig. 4 is a heat dissipation diagram of a retired battery module according to the present invention.

Wherein: 1. a side plate; 2. a cover plate; 3. a battery cell; 4. an orifice plate; 5. a support; 6. a rib; 7. a guard plate; 8. a decommissioned battery module.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 to 4, the invention includes charging the retired battery stack by the ac grid power, combined power supply of the retired battery stack and the ac grid power to the electric vehicle, a structure of the retired battery stack (for heat dissipation), and movability of the charging pile by cooperating with the power distribution control unit. The invention has simple structure, is economical and practical, effectively solves the problems of full use of retired batteries, functional structure of novel charging piles, heat dissipation of retired batteries and mobility of charging piles, and relieves the pressure of a power grid.

Specifically, the system comprises a photovoltaic power supply, an alternating current power grid, an electric automobile, a power distribution control body fed back by retired battery stack information, a power grid switch and a module converter under the action of the power distribution control body, and an alternating current-direct current conversion device for converting current types. The charging pile power source comprises alternating current power grid power and photovoltaic power supply power, and the embodiment form comprises the alternating current power grid power, the photovoltaic power supply power and retired battery pile stored power. The power distribution control body is used for realizing power input and output flow direction control under the conditions of peak valley electricity, retired battery residual capacity feedback, user selection and the like, and is embodied in power output of a power grid, power input and output of a retired battery stack and module conversion. The heat radiation structure of decommissioning battery stack includes a plurality of battery module of decommissioning, and the battery module of decommissioning includes a plurality of battery module of decommissioning, and battery module of decommissioning includes curb plate 1, apron 2, battery monomer 3, orifice plate 4, and the battery module of decommissioning includes support 5, rib 6, backplate 7 and battery module 8 of decommissioning. The battery monomers 3 in the retired battery module are arranged according to a honeycomb structure, the heights of 13 regular hexagonal cells are symmetrically and closely distributed, module runners are arranged in the central regular hexagonal cell (m in figure 2), 12 battery monomers 3 are arranged in the rest cells (a-l in figure 2), and rectangular air openings corresponding to two stages of batteries are formed in side plates. Retired battery modules in the retired battery module are arranged according to a honeycomb structure, 7 regular hexagonal cells are highly symmetrically and closely distributed, a module runner is arranged in the center, and 6 retired battery modules are arranged in the rest of the retired battery modules. The central module flow channel is provided with an auxiliary fan for discharging hot air, and the edge protection plate 7 is provided with a first rectangular transverse hole corresponding to two stages of batteries for entering cold air. The ex-service battery stack is formed by longitudinally superposing ex-service battery modules and coupling the ex-service battery modules with an air duct.

The invention is a reasonable charging pile combining photoelectric and power grid electric control and distribution system, and the electric power distribution control body controls the input and output conditions of electric power according to working conditions; meanwhile, the battery module and the module heat dissipation system are more ideal; also is a portable electric pile that fills. Fill electric pile installation mobile device in order to realize filling electric pile's higher convenience, also be favorable to commercialization man-machine networking interdynamic.

Wherein, retired battery pile, alternating current-direct current converter constitute closed circulation, and photovoltaic power supply is used for giving the power distribution control body power supply, and alternating current network's electricity is directly transmitted for electric automobile or is transmitted for retired battery pile indirect transmission and fill electric pile in order to realize the peak clipping and fill the valley, and retired battery pile structure possesses good heat dissipation function.

Specifically, a honeycomb bionic structure is adopted for constructing the retired battery module, 13 cells of each retired battery module are arranged outside a central cell, 12 battery monomers are placed in the rest cells, each battery monomer is fixed at the opposite position by two pore plates which are symmetrical up and down, a hexagonal cylinder body is formed by six identical rectangular side plates and two hexagonal cover plates which are symmetrical up and down, each side plate is provided with two second rectangular transverse holes which are symmetrical up and down, and an air duct, namely a module channel, is formed in the middle of the module. Retired battery module is also according to biological bionical honeycomb structure, the gathering state of 7 regular hexagon nests is constructed to two upper and lower supports, each inside crosspoint department of support all has the perpendicular rib fixed connection who link up, the total 12 of rib, the side part of retired battery module structure comprises 6 backplate, every backplate is the shape of half regular hexahedron cylinder side, and it has the horizontal hole of the first rectangle of two upper and lower symmetries at the mid-plane, among 7 regular hexagons of retired battery module, central regular hexagon is the runner through-hole, the module passageway promptly, 6 retired battery module can be placed to 6 regular hexagons on every side.

Retired battery module can the multilayer stack, and the whole runner of coupling combines together with the module passageway during the stack, and holistic upper and lower terminal surface department, central regular hexagon are hot-blast air outlet, are blown out by auxiliary fan, and 6 are cold wind air inlets on every side, and two kinds of wind gaps make formation air cycle.

The implementation of the present invention is further described below with reference to the accompanying drawings:

referring to fig. 1, the power distribution control body is powered by a photovoltaic power supply to realize the input and output performance of the charging pile power, when the alternating current power grid is at a valley value and the charging pile is in a non-use state, the power distribution control body adjusts the module converter to a battery pile circuit, a retired battery pile is in a charging state, a power grid switch is turned on according to the feedback condition of the residual capacity of the retired battery pile to control the alternating current power grid to charge direct current power to the retired battery pile through the alternating current-direct current converter, and when the charging pile is in a use state, the power distribution control body controls the module converter to output the power grid power or the battery pile power to a user according to the selection of.

The retired battery stack adopts an air cooling mode for heat dissipation, and is simple and easy compared with a liquid cooling device and low in cost.

As shown in fig. 2, 3 and 4, for the heat dissipation design of the retired battery stack, both the retired battery module and the retired battery module adopt a honeycomb structure, for the retired battery module, it is assumed that each retired battery module occupies a hexagonal space, the battery monomers are spatially combined, 13 regular hexagonal spaces are arranged in a hexagon according to the arrangement mode of the honeycomb, the rest of the regular hexagonal spaces except for the middle hexagon are set as an air duct, 12 battery monomers are placed to form a retired battery module, the positive and negative electrodes of the battery monomers on the same end face are arranged in a staggered manner, and besides the hexagonal space around each battery monomer is used as a heat dissipation flow channel, a space is also used as an air flow channel in the middle of the retired battery module; for the retired battery module, the retired battery module is in an aggregation state of 7 regular hexagonal cells, the central regular hexagon is used as an air duct, and 6 retired battery modules can be placed in 6 regular hexagons around the central regular hexagon; the retired battery module is vertically stacked.

This design is all fine to the concatenation compact between single decommissioning battery module, the decommissioning battery module and between the decommissioning battery module to the runner coupling of being convenient for, battery monomer adopts bolted connection with the apron simultaneously, adopts detachable device, makes things convenient for the free change of battery, and the guarantee equipment utilization is comparatively convenient.

Considering that two-stage heating of the battery is serious, in order to improve the temperature distribution uniformity of the battery, the heat dissipation of the two stages of the battery is necessarily enhanced, rectangular small holes are formed in the two-stage sides of the battery of the retired battery module and the retired battery module, the upper end face and the lower end face of each of the 6 retired battery modules are cold air inlets, a central regular hexagon of the retired battery module is a hot air outlet, after the retired battery module is coupled in multiple layers, all longitudinal holes are communicated, and on the lower end face of the coupled whole, 1 auxiliary fan is arranged at the position of a central regular hexagon through hole to blow hot air upwards to flow; on two holistic upper and lower terminal surfaces of coupling, all set up two about every central authorities' circular through hole department of 6 regular hexagons on every side and blow the fan to blowing in cold wind to inside, combine the vent of decommissioning battery module backplate, realize air cycle, and the module that is in terminal surface about the non then does not have solitary fan.

The above-described embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the described embodiments, and various modifications and variations of the present invention can be made by those skilled in the art, which are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.