CN117335531A - Energy storage battery pack for photovoltaic power generation - Google Patents
Energy storage battery pack for photovoltaic power generation Download PDFInfo
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- CN117335531A CN117335531A CN202311581521.6A CN202311581521A CN117335531A CN 117335531 A CN117335531 A CN 117335531A CN 202311581521 A CN202311581521 A CN 202311581521A CN 117335531 A CN117335531 A CN 117335531A
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- 238000010248 power generation Methods 0.000 title claims abstract description 36
- 238000004146 energy storage Methods 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims description 68
- 230000008713 feedback mechanism Effects 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 28
- 238000012544 monitoring process Methods 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 230000000007 visual effect Effects 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000009827 uniform distribution Methods 0.000 claims description 8
- 230000033228 biological regulation Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 230000008447 perception Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000005291 magnetic effect Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008844 regulatory mechanism Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
- H01M10/465—Accumulators structurally combined with charging apparatus with solar battery as charging system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/20—Systems characterised by their energy storage means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to an energy storage battery pack for photovoltaic power generation. The invention can realize the serial-parallel switching of the charging system, further can self-regulate according to the power of the photovoltaic system, meets different charging demands, has good protection on the battery units, realizes the balanced charging of a plurality of battery units, and avoids the problem that the service life of the battery units is influenced by overlarge heat accumulation because the voltage and the charge state among the batteries are different in the charging and discharging processes so that some batteries work in the overcharged or overdischarged state, thereby reducing the performance and the service life of the whole battery pack.
Description
Technical Field
The invention belongs to the technical field of photovoltaic power generation, and particularly relates to an energy storage battery pack for photovoltaic power generation.
Background
Photovoltaic power generation is a technology that uses light energy to convert it into electrical energy, and a photovoltaic power generation system generally needs to use an energy storage battery pack to store and manage electrical energy so as to supply electrical energy at night, in cloudy days or in peak periods, and the energy storage battery pack can store surplus electrical energy generated by photovoltaic power generation in daytime for future use.
The charging modes of the energy storage battery packs are two, namely, one common charging mode is serial charging, namely, after one battery pack is fully charged, the next battery pack is connected to continue charging, the other mode is parallel charging, namely, a plurality of battery packs are simultaneously connected together and charged by the same charging current, the serial charging mode has the advantages of being capable of independently monitoring and managing each battery pack, the parallel charging mode has the advantages of being capable of realizing high charging power, the serial parallel charging mode is selectively regulated according to actual use requirements at present, but a photovoltaic power generation system generates power according to illumination intensity, so that the generated energy is not stable enough, when the generated power is high, the charging current is increased, so that the single battery pack cannot meet the charging requirement in a serial charging process, the charging speed is too fast, the chemical reaction rate inside the battery is accelerated, more heat is generated in the process of energy conversion, the battery is overheated, the thermal runaway and the safety are increased, the service life of the storage battery pack is greatly influenced by the fact that the serial and parallel charging mode cannot be well self-adaptive.
Disclosure of Invention
The present invention aims to solve the above problems and provide an energy storage battery pack for photovoltaic power generation.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides an energy storage group battery for photovoltaic power generation, includes the casing, the inner wall of casing evenly fixedly installs a plurality of battery units, the upper end of casing still fixedly installs the access mechanism that charges, the outside of access mechanism that charges still fixedly installs the sensing feedback mechanism that charges, the sensing feedback mechanism that charges is connected with the charging end electricity of battery unit, the upper end of battery unit still fixedly installs the state of charge monitoring feedback mechanism, the upper end of access mechanism that charges still fixedly installs the state of charge visual display measuring mechanism, state of charge monitoring feedback mechanism and state of charge visual display measuring mechanism electricity are connected, still install charge size uniform distribution regulation and control mechanism on the input of access mechanism that charges, the lateral wall of casing still installs heat dissipation cooling mechanism;
the outer wall of the shell is also fixedly provided with a PLC controller, and the charging access mechanism, the charging current sensing feedback mechanism, the charging state monitoring feedback mechanism, the charging state visual display measuring mechanism and the charging size uniform distribution regulating and controlling mechanism are all electrically connected with the PLC controller.
In the energy storage battery pack for photovoltaic power generation, the charging access mechanism comprises a plurality of lifting rods movably sleeved at the upper end of the shell, a plurality of lifting rods are fixedly connected with the same lifting plate, a plurality of lifting rods are fixedly connected with the same charging connector at the lower end of the lifting rods, a charging wire is electrically connected to the charging connector, the charging connector is electrically connected with the upper end of the battery unit, a plurality of pull-up springs sleeved outside the lifting rods are fixedly connected between the upper end of the charging connector and the top of the inner wall of the shell, a housing is fixedly arranged at the upper end of the shell, a rotating shaft is rotatably connected to the inner wall of the upper end of the housing, two cams abutting against the upper end of the lifting plate are fixedly sleeved on the shaft wall of the rotating shaft, a rotating motor is fixedly arranged on the outer wall of the housing, and the output end of the rotating motor is fixedly connected with one end of the rotating shaft.
In the energy storage battery pack for photovoltaic power generation, the charging current sensing feedback mechanism comprises a sensing shell, a plurality of jacks are formed in the upper end of the sensing shell, guide rods are movably sleeved in the corresponding jacks, the lower ends of the guide rods are fixedly connected with the same feedback plate, a plurality of reset springs sleeved outside the guide rods are fixedly connected to the upper end of the feedback plate and the top of the inner wall of the sensing shell, a thrust electromagnetic plate is fixedly connected to the bottom of the inner wall of the sensing shell, a thrust permanent magnet plate is fixedly connected to the lower end of the feedback plate, an operation shell is further arranged on one side of the sensing shell, an excessive current feedback switch and an excessive electric quantity are fixedly connected to the inner wall of the operation shell to fill the feedback switch, an operation plate is fixedly connected to the side wall of the feedback plate, one end of the operation plate extends into the operation shell, and the thrust electromagnetic plate is electrically connected with the charging end of the battery unit.
In the energy storage battery pack for photovoltaic power generation, the charging state monitoring feedback mechanism comprises two positive and negative electrode connecting posts fixedly arranged at the upper end of the battery unit, two insulating shells sleeved outside the positive and negative electrode connecting posts are symmetrically and fixedly arranged at the upper end of the battery unit, a plurality of jacks are formed in one side wall of the insulating shell, push-pull rods are movably sleeved in the corresponding jacks, one ends of the push-pull rods, which are located in the insulating shell, are fixedly connected with the same electric connection seat, the electric connection seat and the positive and negative electrode connecting posts are electrically connected, one ends of the push-pull rods extend out of the insulating shell and are fixedly connected with the same L-shaped push-pull plate, a plurality of return springs sleeved outside the push-pull rods are fixedly connected between the side wall of the L-shaped push-pull plate and the insulating shell, the upper end of the L-shaped push-pull plate is fixedly connected with a stress plate, the upper end of the insulating shell is fixedly connected with a positioning plate, the side wall of the positioning plate is fixedly connected with a suction permanent magnet plate, and the side wall of the stress plate is fixedly connected with a suction permanent magnet plate.
In the energy storage battery pack for photovoltaic power generation, the charging state visual display measuring mechanism comprises a voltage detection assembly and an installation shell, wherein the output end of the voltage detection assembly is fixedly connected with an arc-shaped rack, the top of the inner wall of the installation shell is slidably connected with a linear rack meshed with the arc-shaped rack, one end of the linear rack is fixedly connected with a same compression air bag between the inner wall of the upper end of the installation shell, an air pressure cylinder is fixedly arranged at the upper end of the installation shell, the side wall of the compression air bag is communicated with the air pressure cylinder through an air pipe, a movable piston is arranged in a sealing sleeve in the air pressure cylinder, and a laser range finder is fixedly inserted at the other end of the air pressure cylinder.
In the energy storage battery pack for photovoltaic power generation, the charging size uniform distribution regulation and control mechanism comprises two first contact plates and second contact plates which are arranged on a charging line, a protective shell which is sleeved outside the first contact plates and the second contact plates is fixedly arranged at the upper end of the shell, the inner walls of the first contact plates and the protective shell are fixedly connected, the second contact plates are rotationally connected with the inner walls of the protective shell, the side walls of the second contact plates are rotationally connected with the charging line through rotary conductive joints, arc-shaped electrifying plates are fixedly embedded in the side walls of the first contact plates, a plurality of strip-shaped electrifying plates are uniformly and fixedly embedded in the side walls of the second contact plates, the arc-shaped electrifying plates and the strip-shaped electrifying plates are connected with the charging line, a power regulation mechanism is fixedly arranged at the upper end of the protective shell, and the output end of the power regulation mechanism is connected with the second contact plates through belt pulley assemblies.
In the energy storage battery pack for photovoltaic power generation, the heat dissipation and cooling mechanism comprises two heat dissipation fans symmetrically and fixedly sleeved on the side wall of the shell, and the installation position of the shell corresponding to the heat dissipation fans is fixedly connected with a dustproof screen plate.
In the energy storage battery pack for photovoltaic power generation, the power adjusting mechanism comprises a power shell fixed at the upper end of the protective shell, the inner wall of the power shell is rotationally connected with a transmission shaft, one end of the transmission shaft is connected with the belt pulley assembly, a transmission gear is fixedly sleeved on the transmission shaft, a plurality of jacks are symmetrically arranged at the rear end of the power shell, an anti-falling rod is movably sleeved in the corresponding jacks, a plurality of transmission racks meshed with the transmission gear are fixedly connected to one end of each anti-falling rod, the rear end of each anti-falling rod is fixedly connected with an anti-falling plate, a compensation spring sleeved outside the anti-falling rod is fixedly connected between the anti-falling plate and the power shell, an adjusting electromagnetic plate is fixedly connected to the rear side of the inner wall of the power shell, and an adjusting permanent magnetic plate is fixedly connected to the rear end of each transmission rack.
Compared with the prior art, the invention has the beneficial effects that:
1. through the charging access mechanism that sets up, charging current perception feedback mechanism, can automatic monitoring charging current's size, and then reflect photovoltaic system's power size, when charging current is too big, indicate that single charging unit can't satisfy high power photovoltaic system's demand of charging for charging efficiency greatly reduced, and then the feedback starts yet another battery unit and inserts charging system, and then can realize charging system series-parallel's switching use, and then can carry out self-regulation according to photovoltaic system's power, satisfy different charging demands, and it is good to battery unit's protectiveness.
2. Through charge state monitoring feedback mechanism, charge state visual display measuring mechanism, charge size evenly distributed regulation and control mechanism, power adjustment mechanism who sets up, can carry out automatic monitoring to the charge voltage of battery unit when carrying out parallelly connected charging, and then detect the charge voltage of a plurality of battery units, carry out the compensation regulation of charge voltage again, and then realize the balanced charge to a plurality of battery units, avoid because each battery unit's self performance is different, and then lead to voltage and charge state difference between the battery at charge and discharge in-process make some batteries work at the overcharge or the overdischarge state, thereby reduced the performance and the problem of life-span of whole group battery.
3. Through the heat dissipation cooling mechanism that sets up, can carry out the self-interacting of heat dispersion according to the quantity of switching into charging system battery unit, and then avoid the too big problem that influences battery unit life of heat accumulation.
To sum up: the invention can realize the serial-parallel switching of the charging system, further can self-regulate according to the power of the photovoltaic system, meets different charging demands, has good protection on the battery units, realizes the balanced charging of a plurality of battery units, and avoids the problem that the service life of the battery units is influenced by overlarge heat accumulation because the voltage and the charge state among the batteries are different in the charging and discharging processes so that some batteries work in the overcharged or overdischarged state, thereby reducing the performance and the service life of the whole battery pack.
Drawings
Fig. 1 is a schematic structural diagram of an energy storage battery pack for photovoltaic power generation provided by the invention;
fig. 2 is a schematic diagram of a part of an enlarged structure of an energy storage battery pack for photovoltaic power generation according to the present invention;
fig. 3 is a schematic structural diagram of a charging access mechanism of an energy storage battery pack for photovoltaic power generation provided by the invention;
fig. 4 is a schematic diagram of a cross-sectional structure of a charging current sensing feedback mechanism of an energy storage battery pack for photovoltaic power generation;
fig. 5 is a schematic diagram of a cross-sectional structure of a charging state monitoring feedback mechanism of an energy storage battery pack for photovoltaic power generation;
fig. 6 is a schematic diagram of a cross-sectional structure of a visual display measurement mechanism for the state of charge of an energy storage battery pack for photovoltaic power generation;
fig. 7 is a schematic cross-sectional structural diagram of a mechanism for uniformly distributing and regulating the charging size of an energy storage battery pack for photovoltaic power generation;
fig. 8 is a schematic top sectional view of a power adjusting mechanism of an energy storage battery pack for photovoltaic power generation according to the present invention;
fig. 9 is a schematic side view of the first contact plate and the second contact plate of fig. 7.
In the figure: 1 casing, 2 charging access mechanism, 21 lifter, 22 lifter plate, 23 charging connector, 24 charging wire, 25 pull-up spring, 26 housing, 27 rotating shaft, 28 cam, 29 rotating motor, 3 charging current sensing feedback mechanism, 31 sensing housing, 32 guide bar, feedback plate, 34 reset spring, 35 thrust electromagnetic plate, 36 thrust permanent magnet plate, 37 operating housing, 38 current oversized feedback switch, 39 electric quantity full feedback switch, 310 operating plate, 4 charging state monitoring feedback mechanism, 41 positive and negative pole connecting column, 42 insulating housing, 43 push-pull rod, 44 electric seat, 45L-shaped push-pull plate, 46 return spring, 47 stress plate, 48 positioning plate, 49 suction electromagnetic plate, 410 permanent magnet plate the device comprises a 5 charge state visual display measuring mechanism, a 51 voltage detecting component, a 52 mounting shell, a 53 arc-shaped rack, a 54 linear rack, a 55 compression air bag, a 56 air pressure cylinder, a 57 vent pipe, a 58 moving piston, a 59 laser range finder, a 6 charge size uniform distribution regulating and controlling mechanism, a 61 first contact plate, a 62 second contact plate, a 63 protecting shell, a 64 arc-shaped power-on plate, a 65 strip-shaped power-on plate, a 66 belt pulley component, a 7 heat dissipation and cooling mechanism, a 71 heat dissipation fan, a 72 dustproof screen plate, an 8 power regulating mechanism, a 81 power shell, a 82 transmission shaft, a 83 transmission gear, a 84 anti-falling rod, a 85 transmission rack, a 86 anti-falling plate, a 87 compensation spring, a 88 regulating electromagnetic plate, a 89 regulating permanent magnet plate, a 9 battery unit and a 10PLC controller.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1-9, an energy storage battery pack for photovoltaic power generation comprises a casing 1, a plurality of battery units 9 are uniformly and fixedly arranged on the inner wall of the casing 1, a charging access mechanism 2 is fixedly arranged at the upper end of the casing 1, the charging access mechanism 2 comprises a plurality of lifting rods 21 movably sleeved at the upper end of the casing 1, the upper ends of the lifting rods 21 are fixedly connected with the same lifting plate 22, the lower ends of the lifting rods 21 are fixedly connected with the same charging connector 23, a charging wire 24 is electrically connected to the charging connector 23, the upper ends of the charging connector 23 and the battery units 9 are electrically connected in a plugging manner, a plurality of pull-up springs 25 sleeved outside the lifting rods 21 are fixedly connected between the upper end of the charging connector 23 and the top of the inner wall of the casing 1, a casing 26 is fixedly arranged at the upper end of the casing 26, a rotating shaft 27 is fixedly sleeved on the inner wall of the upper end of the casing 26, two cams 28 abutting against the upper ends of the lifting plate 22 are fixedly connected with the outer wall of the casing 26, one end of the rotating motor 29 is fixedly connected with one end of the rotating motor 27.
The charging access mechanism 2 is also fixedly provided with a charging current sensing feedback mechanism 3, the charging current sensing feedback mechanism 3 comprises a sensing shell 31, a plurality of jacks are formed in the upper end of the sensing shell 31, guide rods 32 are movably sleeved in the corresponding jacks, the lower ends of the guide rods 32 are fixedly connected with the same feedback plate 33, the upper end of the feedback plate 33 and the top of the inner wall of the sensing shell 31 are fixedly connected with a plurality of reset springs 34 sleeved outside the guide rods 32, the bottom of the inner wall of the sensing shell 31 is fixedly connected with a thrust electromagnetic plate 35, the lower end of the feedback plate 33 is fixedly connected with a thrust permanent magnet plate 36, one side of the sensing shell 31 is further provided with an operation shell 37, the inner wall of the operation shell 37 is fixedly connected with an excessive current feedback switch 38 and an electric quantity full feedback switch 39, one end of the operation plate 310 extends into the operation shell 37, and the thrust electromagnetic plate 35 is electrically connected with the charging end of the battery unit 9.
The charging current sensing feedback mechanism 3 is electrically connected with a charging end of the battery unit 9, the charging state monitoring feedback mechanism 4 is fixedly arranged at the upper end of the battery unit 9, the charging state monitoring feedback mechanism 4 comprises two positive and negative electrode connecting posts 41 fixedly arranged at the upper end of the battery unit 9, two insulating shells 42 sleeved outside the positive and negative electrode connecting posts 41 are symmetrically and fixedly arranged at the upper end of the battery unit 9, a plurality of jacks are formed in one side wall of the insulating shells 42, push-pull rods 43 are movably sleeved in the corresponding jacks, one ends of the plurality of push-pull rods 43 positioned in the insulating shells 42 are fixedly connected with the same electric seat 44, the electric seat 44 is electrically connected with the positive and negative electrode connecting posts 41, one ends of the plurality of push-pull rods 43 extend out of the insulating shells 42, a plurality of return springs 46 sleeved outside the plurality of L-shaped push-pull plates 45 are fixedly connected between the side walls of the L-shaped push plates 45 and the insulating shells 42, a positioning plate 48 is fixedly connected with a permanent magnet attractive force plate 47, and the side wall of the positioning plate 48 is fixedly connected with the attractive force plate 47.
The upper end of the charging access mechanism 2 is fixedly provided with a charging state visual display measuring mechanism 5, the charging state visual display measuring mechanism 5 comprises a voltage detection assembly 51 and an installation shell 52, the output end of the voltage detection assembly 51 is fixedly connected with an arc-shaped rack 53, the top of the inner wall of the installation shell 52 is slidably connected with a linear rack 54 meshed with the arc-shaped rack 53, one end of the linear rack 54 is fixedly connected with a compression air bag 55 between the inner wall of the upper end of the installation shell 52, the upper end of the installation shell 52 is fixedly provided with an air pressure cylinder 56, the side wall of the compression air bag 55 is communicated with the air pressure cylinder 56 through an air pipe 57, a movable piston 58 is sleeved in the air pressure cylinder 56, and the other end of the air pressure cylinder 56 is fixedly sleeved with a laser range finder 59.
The charging state monitoring feedback mechanism 4 is electrically connected with the charging state visual display measuring mechanism 5, the charging access mechanism 2 is further provided with a charging size uniform distribution regulating mechanism 6, the charging size uniform distribution regulating mechanism 6 comprises two first contact plates 61 and second contact plates 62 which are arranged on the charging wire 24, the upper end of the machine shell 1 is further fixedly provided with a protective shell 63 which is sleeved outside the first contact plates 61 and the second contact plates 62, the inner walls of the first contact plates 61 and the protective shell 63 are fixedly connected, the second contact plates 62 are rotatably connected with the inner walls of the protective shell 63, the side walls of the second contact plates 62 are rotatably connected with the charging wire 24 through rotary conductive joints, the side walls of the first contact plates 61 are fixedly embedded with arc-shaped electrifying plates 64, the side walls of the second contact plates 62 are uniformly fixedly embedded with a plurality of strip-shaped electrifying plates 65, the arc-shaped electrifying plates 64 and the strip-shaped electrifying plates 65 are connected with the charging wire 24, the upper end of the protective shell 63 is fixedly provided with a power regulating mechanism 8, and the output end of the power regulating mechanism 8 is connected with the second contact plates 62 through belt pulley assemblies 66.
The power adjusting mechanism 8 comprises a power shell 81 fixed at the upper end of the protecting shell 63, a transmission shaft 82 is rotatably connected to the inner wall of the power shell 81, one end of the transmission shaft 82 is connected with the belt pulley assembly 66, a transmission gear 83 is fixedly sleeved on the transmission shaft 82, a plurality of jacks are symmetrically arranged at the rear end of the power shell 81, a plurality of anti-falling rods 84 are movably sleeved in the corresponding jacks, one end of each anti-falling rod 84 in the power shell 81 is fixedly connected with a transmission rack 85 meshed with the transmission gear 83, the rear end of each anti-falling rod 84 is fixedly connected with an anti-falling plate 86, a compensation spring 87 sleeved outside the anti-falling rod 84 is fixedly connected between each anti-falling plate 86 and the power shell 81, an adjusting electromagnetic plate 88 is fixedly connected to the rear side of the inner wall of the power shell 81, and the rear end of each transmission rack 85 is fixedly connected with an adjusting permanent magnet plate 89.
The side wall of the shell 1 is also provided with a heat dissipation and cooling mechanism 7, the heat dissipation and cooling mechanism 7 comprises two heat dissipation fans 71 which are symmetrically and fixedly sleeved on the side wall of the shell 1, and the installation position of the shell 1 corresponding to the heat dissipation fans 71 is also fixedly connected with a dustproof screen 72.
The outer wall of the shell 1 is also fixedly provided with a PLC (programmable logic controller) 10, and the charging access mechanism 2, the charging current sensing feedback mechanism 3, the charging state monitoring feedback mechanism 4, the charging state visual display measuring mechanism 5 and the charging size uniform distribution regulating and controlling mechanism 6 are electrically connected with the PLC 10.
The principle of operation of the present invention will now be described as follows: when charging, a rotating motor 29 is started firstly, the rotating motor 29 drives a cam 28 to rotate through a rotating shaft 27, so that a protruding part of the cam 28 is pushed to push the upper end of a lifting plate 22, the lifting plate 22 pushes a charging connector 23 to move downwards through a lifting rod 21, a charging interface between the charging connector 23 and the upper end of a battery unit 9 is connected with the battery unit 9 to perform charging operation, one end of a charging wire 24 is connected with a photovoltaic system to perform charging operation on the battery unit 9, a branch wire of the charging wire 24 is connected with a thrust electromagnetic plate 35, the thrust electromagnetic plate 35 is electrified to generate magnetism, the feedback plate 33 is driven by a matching thrust permanent magnetic plate 36 to overcome the elasticity of a reset spring 34 to move upwards, the larger the charging current is, the larger the upward moving distance of the feedback plate 33 is, the feedback plate 33 drives an operation plate 310 to move upwards and downwards synchronously, when the power of the photovoltaic system is so high that one battery unit 9 cannot meet the charging requirement, the operation panel 310 synchronously acts on the feedback switch 38 with overlarge current, and then a feedback signal is sent to the PLC controller 10, the PLC controller 10 drives the next rotating motor 29 to act, so that the next battery unit 9 enters the charging system, the magnitude of charging current can be automatically monitored, the power magnitude of the photovoltaic system is further reflected, when the charging current is overlarge, the condition that a single charging unit cannot meet the charging requirement of the high-power photovoltaic system is indicated, the charging efficiency is greatly reduced, and further, the charging system is connected in series-parallel connection by feedback starting of the other battery unit 9, and then, the switching use of the charging system can be realized, and self-adjustment can be carried out according to the power of the photovoltaic system, so that different charging requirements can be met, and the protection of the battery unit 9 is good;
after the single battery unit 9 is fully charged, the charging current of the battery unit 9 is gradually reduced and approaches zero, at the moment, the magnetism of the thrust electromagnetic plate 35 is gradually reduced, the feedback plate 33 gradually moves downwards with the operation plate 310 under the action of the reset spring 34, when the operation plate 310 acts on the electric quantity full-charge feedback switch 39, the PLC controller 10 controls the current rotating motor 29 to drive the cam 28 to rotate 90 degrees again, the charging connector 23 is separated from the battery unit 9 under the action of the pull-up spring 25, and the problem that the service life of the battery unit 9 is influenced due to overcharging of the battery unit 9 is avoided;
after a plurality of battery units 9 are connected into a charging system, the PLC 10 controls the power supply equipment to electrify the attraction electromagnetic plate 49, the attraction electromagnetic plate 49 is electrified to generate magnetism which is matched with the attraction permanent magnetic plate 410 to drive the stress plate 47 to drive the L-shaped push-pull plate 45 to move, and then the push-pull rod 43 is matched to push the electric seat 44 to overcome the elastic force of the return spring 46 to move, so that the electric seat 44 is in contact with the positive electrode and the negative electrode to be electrically connected, the electric seat 44 feeds the electric strength back into the voltage detection assembly 51 through an electric wire, the voltage detection assembly 51 is the conventional universal voltmeter structure, the voltage detection assembly 51 is internally provided with a magnet and a wire coil by utilizing the magnetic effect of current, the coil generates a magnetic field after the current is electrified, deflection occurs under the action of the magnet, the larger the generated magnetic force is expressed, the larger swing of a pointer on the voltage detection assembly 51 is expressed, further, the larger the charging voltage of the corresponding battery unit 9 is, the larger the swing amplitude of the arc-shaped rack 53 is driven by the voltage detection assembly 51, the larger the extrusion displacement of the compression air bag 55 is caused by the meshing action of the arc-shaped rack 53 and the linear rack 54, the compression air bag 55 is extruded so that the air in the compression air bag is conveyed into the air cylinder 56 through the air pipe 57 in a pressing mode, the moving piston 58 in the air cylinder 56 is stressed to move, the distance of the moving piston 58 relative to the laser distance meter 59 is monitored by the laser distance meter 59, the smaller the monitoring distance is, the larger the moving distance is, the charging voltage of the current battery unit 9 is large, the larger the monitoring distance is, the smaller the charging voltage of the current battery unit 9 is, the distance information monitored by the battery unit 9 is fed back to the PLC controller 10, the PLC controller 10 carries out average calculation on the monitored specific values, and then the calculated average value is subjected to difference calculation with the value monitored by each laser range finder 59, the value monitored by each laser range finder 59 is subtracted from the average value to obtain a negative value which indicates that the charging voltage of the battery unit 9 is smaller, a positive value which indicates that the charging voltage of the battery unit 9 is larger is obtained, the power-on current of the regulating electromagnetic plate 88 is regulated according to the magnitude of the difference value, the power-on current of the regulating electromagnetic plate 88 is kept at the middle position initially, when the charging voltage of the battery unit 9 is larger, larger current is fed to the regulating electromagnetic plate 88, the regulating permanent magnetic plate 89 is matched with the regulating electromagnetic plate 88 to enable the transmission rack 85 to move forward, the transmission shaft 82 and the belt pulley assembly 66 are driven by the meshing effect of the transmission rack 85 and the transmission gear 83 to drive the second contact plate 62 to rotate clockwise, the contact number of the strip-shaped power-on plate 65 on the second contact plate 62 and the arc-shaped power-on plate 64 on the first contact plate 61 is reduced, the charging cross section of the charging wire 24 of the current battery unit 9 is relatively reduced, and the charging current is relatively reduced, otherwise, when the charging voltage of the battery unit 9 is relatively large, the electromagnetic plate 88 is regulated to reduce the introduced current, the transmission rack 85 is moved backwards under the action of the compensation spring 87, and the second contact plate 62 is relatively rotated anticlockwise, so that the number of the strip-shaped electrifying plates 65 and the arc-shaped electrifying plates 64 in contact is increased, the charging current is relatively increased, the charging voltage of the battery unit 9 can be automatically monitored when parallel charging is performed, the charging voltages of the battery units 9 are further detected, and then the compensation regulation of the charging voltages is performed, so that the balanced charging of the battery units 9 is realized, the situation that the performances of the battery units 9 are different is avoided, the voltage and the charge state between the batteries are different in the charge and discharge process, so that some batteries work in an overcharged or overdischarged state, and the performance and the service life of the whole battery pack are reduced;
the PLC controller 10 adjusts the power supply current of the heat dissipation fans 71 according to the number of the battery units 9 connected into the charging system, the larger the number of the battery units 9 connected into the charging system is, the larger the power supply current is, because the heat dissipation fans 71 are direct-current fans, the larger the power supply current is, the higher the working power of the heat dissipation fans 71 is, the larger heat dissipation performance is further provided, the self-adjustment of the heat dissipation performance can be performed according to the number of the battery units 9 connected into the charging system, and the problem that the service life of the battery units 9 is influenced due to overlarge heat accumulation is avoided.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The utility model provides an energy storage group battery for photovoltaic power generation, includes casing (1), its characterized in that, the inner wall of casing (1) evenly is fixed and is installed a plurality of battery cell (9), the upper end of casing (1) still is fixed and is installed charge access mechanism (2), the outside of charge access mechanism (2) still is fixed and is installed charge current perception feedback mechanism (3), charge current perception feedback mechanism (3) are connected with the charging end electricity of battery cell (9), the upper end of battery cell (9) still is fixed and is installed charge state monitoring feedback mechanism (4), the upper end of charge access mechanism (2) still is fixed and is installed charge state visual display measuring mechanism (5), charge state monitoring feedback mechanism (4) and charge state visual display measuring mechanism (5) electricity are connected, charge and be installed charge size evenly distributed mechanism (6) on the input of access mechanism (2), cooling mechanism (7) are still installed to the lateral wall of casing (1);
the utility model discloses a charging system, including casing (1), charging access mechanism (2), charging current perception feedback mechanism (3), charging state monitoring feedback mechanism (4), charging state visual display measuring mechanism (5), charging size evenly distributed regulation and control mechanism (6), the outer wall of casing (1) still fixed mounting has PLC controller (10), charging access mechanism (2), charging current perception feedback mechanism (3), charging state monitoring feedback mechanism (4), charging state visual display measuring mechanism (5), charging size evenly distributed regulation and control mechanism (6) all are connected with PLC controller (10) electricity.
2. The energy storage battery pack for photovoltaic power generation according to claim 1, wherein the charging access mechanism (2) comprises a plurality of lifting rods (21) movably sleeved at the upper end of the casing (1), a plurality of lifting rods (21) are fixedly connected with a same lifting plate (22), a plurality of lifting rods (21) are fixedly connected with a same charging connector (23) at the lower end, a charging wire (24) is electrically connected to the charging connector (23), the upper ends of the charging connector (23) and the battery unit (9) are electrically connected, a plurality of pull-up springs (25) sleeved outside the lifting rods (21) are fixedly connected between the upper end of the charging connector (23) and the top of the inner wall of the casing (1), a casing (26) is fixedly arranged at the upper end of the casing (26), two cams (28) abutting against the upper end of the lifting plate (22) are fixedly sleeved on the shaft wall of the shaft (27), and the outer wall (29) of the casing (1) is fixedly connected with a rotary shaft (29).
3. The energy storage battery pack for photovoltaic power generation according to claim 1, wherein the charging current sensing feedback mechanism (3) comprises a sensing shell (31), a plurality of jacks are formed in the upper end of the sensing shell (31), guide rods (32) are movably sleeved in the corresponding jacks, the lower ends of the guide rods (32) are fixedly connected with the same feedback plate (33), the upper ends of the feedback plate (33) and the top of the inner wall of the sensing shell (31) are fixedly connected with a plurality of reset springs (34) sleeved outside the guide rods (32), the bottom of the inner wall of the sensing shell (31) is fixedly connected with a thrust electromagnetic plate (35), the lower end of the feedback plate (33) is fixedly connected with a thrust permanent magnet plate (36), one side of the sensing shell (31) is further provided with an operation shell (37), the inner wall of the operation shell (37) is further fixedly connected with a current oversized feedback switch (38) and an electric quantity full feedback switch (39), the side wall of the feedback plate (33) is fixedly connected with an operation plate (310), and the operation plate (310) is connected with one end of the charging unit (9).
4. The energy storage battery pack for photovoltaic power generation according to claim 1, wherein the charging state monitoring feedback mechanism (4) comprises two positive and negative electrode connecting posts (41) fixedly arranged at the upper end of the battery unit (9), two insulating shells (42) sleeved outside the positive and negative electrode connecting posts (41) are symmetrically and fixedly arranged at the upper end of the battery unit (9), a plurality of jacks are arranged on one side wall of the insulating shells (42), push-pull rods (43) are movably sleeved in the corresponding jacks, one ends of the push-pull rods (43) positioned in the insulating shells (42) are fixedly connected with the same electric connection base (44), the electric connection base (44) is electrically connected with the positive and negative electrode connecting posts (41), one ends of the push-pull rods (43) extend out of the insulating shells (42) and are fixedly connected with the same L-shaped plate (45), a plurality of springs (46) sleeved outside the rods (43) are fixedly connected between the side walls of the L-shaped push-pull plates (45) and the insulating shells (42), the pull plates (48) are fixedly connected with the attractive force-receiving plates (48), the attractive force-receiving plates (48) are fixedly connected with the attractive force-receiving plates (48), the side wall of the stress plate (47) is fixedly connected with a suction permanent magnet plate (410).
5. The energy storage battery pack for photovoltaic power generation according to claim 1, wherein the charging state visual display measuring mechanism (5) comprises a voltage detection assembly (51) and an installation shell (52), an arc-shaped rack (53) is fixedly connected to the output end of the voltage detection assembly (51), a linear rack (54) meshed with the arc-shaped rack (53) is slidingly connected to the top of the inner wall of the installation shell (52), the same compression air bag (55) is fixedly connected between one end of the linear rack (54) and the inner wall of the upper end of the installation shell (52), an air pressure cylinder (56) is fixedly arranged at the upper end of the installation shell (52), the side wall of the compression air bag (55) is communicated with the air pressure cylinder (56) through an air pipe (57), a movable piston (58) is sleeved in the air pressure cylinder (56), and a laser distance measuring instrument (59) is fixedly sleeved at the other end of the air pressure cylinder (56).
6. The energy storage battery pack for photovoltaic power generation according to claim 2, wherein the charging size uniform distribution regulating mechanism (6) comprises a first contact plate (61) and a second contact plate (62) which are arranged on the charging wire (24), a protecting shell (63) sleeved outside the first contact plate (61) and the second contact plate (62) is fixedly arranged at the upper end of the casing (1), the inner walls of the first contact plate (61) and the protecting shell (63) are fixedly connected, the inner walls of the second contact plate (62) and the protecting shell (63) are rotationally connected, the side wall of the second contact plate (62) is rotationally connected with the charging wire (24) through a rotary conductive joint, a plurality of strip-shaped energizing plates (65) are fixedly embedded at the side wall of the first contact plate (61), the arc-shaped energizing plates (64) and the strip-shaped energizing plates (65) are both connected with the charging wire (24), and the power output end (8) of the power output regulating mechanism (8) is fixedly connected with the upper end of the protecting shell (63).
7. The energy storage battery pack for photovoltaic power generation according to claim 1, wherein the heat dissipation and cooling mechanism (7) comprises two heat dissipation fans (71) symmetrically and fixedly sleeved on the side wall of the casing (1), and a dustproof screen (72) is fixedly connected to the installation position of the casing (1) corresponding to the heat dissipation fans (71).
8. The energy storage battery pack for photovoltaic power generation according to claim 6, wherein the power adjusting mechanism (8) comprises a power shell (81) fixed at the upper end of the protecting shell (63), the inner wall of the power shell (81) is rotationally connected with a transmission shaft (82), one end of the transmission shaft (82) is connected with the belt pulley assembly (66), the transmission shaft (82) is fixedly sleeved with a transmission gear (83), a plurality of jacks are symmetrically arranged at the rear end of the power shell (81), a plurality of anti-falling rods (84) are movably inserted in the corresponding jacks, one end of each anti-falling rod (84) positioned in the power shell (81) is fixedly connected with a transmission rack (85) meshed with the transmission gear (83), the rear end of each anti-falling rod (84) is fixedly connected with an anti-falling plate (86), a compensation spring (87) sleeved outside the anti-falling rod (84) is fixedly connected between the anti-falling plate (86) and the power shell (81), the rear side of the inner wall of the power shell (81) is fixedly connected with an electromagnetic adjusting plate (88), and the electromagnetic adjusting plate (89) is fixedly connected with the permanent magnet adjusting plate (85).
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