CN207766011U - Charge control system and solar charging device - Google Patents
Charge control system and solar charging device Download PDFInfo
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- CN207766011U CN207766011U CN201820601036.9U CN201820601036U CN207766011U CN 207766011 U CN207766011 U CN 207766011U CN 201820601036 U CN201820601036 U CN 201820601036U CN 207766011 U CN207766011 U CN 207766011U
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Abstract
The utility model is to be related to area of solar cell about a kind of charge control system and solar charging device.The technical solution mainly used for：Charge control system comprising：Controller；Temperature detecting module, the temperature detecting module are used to detect the temperature of secondary cell, and the temperature detecting module is connect with the controller, and the temperature signal for obtaining the temperature for detecting secondary cell sends the controller to；Switch module, the switch module are separately connected the controller and the secondary cell；Wherein, the controller controls the working condition of the switch module, and the switching of the charged state of the secondary cell is realized by the switch module.Using charge control system provided by the utility model, secondary cell can be controlled and charged under its most suitable charging temperature, the utilization rate of solar energy is improved.
Description
Technical field
The utility model is related to area of solar cell, more particularly to a kind of charge control system and solar charging Denso
It sets.
Background technology
Solar charging device is made of solar components and secondary cell, when sunlight is on solar components, too
Luminous energy can be converted to electric energy by positive energy component, and be charged to secondary cell.
In the prior art, using high-temperature-reslithium lithium battery as in solar charging device when secondary cell, due to high temperature resistant
The charging temperature that lithium battery allows can reach 60 degree, so even if under strong illumination condition, high-temperature-reslithium lithium battery temperature
When higher than 50 degrees Celsius, high-temperature-reslithium lithium battery may continue to charge.But the Charge Management in solar charging device is set
Chip, setting charging temperature be may not exceed 50 degrees Celsius, so the temperature of high-temperature-reslithium lithium battery 50-60 degrees Celsius it
Between when, solar components can not charge to high-temperature-reslithium lithium battery, and then the utilization rate of solar energy greatly reduces.
So also needing further to solve regarding to the issue above.
Utility model content
The main purpose of the utility model is that providing a kind of new structural charge control system and solar charging Denso
It sets, the technical problem to be solved is that can control the secondary cell of solar charging device within the scope of suitable temperature
Charging.
The purpose of this utility model and its technical problem is solved using following technical scheme to realize.According to this practicality
A kind of charge control system of novel proposition comprising：
Controller；
Temperature detecting module, the temperature detecting module are used to detect the temperature of secondary cell, the temperature detecting module
It is connect with the controller, the temperature signal for obtaining the temperature for detecting secondary cell sends the controller to；
Switch module, the switch module are separately connected the controller and the secondary cell；
Wherein, the controller controls the working condition of the switch module, and described two are realized by the switch module
The switching of the charged state of primary cell.
It the purpose of this utility model and solves its technical problem following technical measures also can be used to further realize.
Preferably, charge control system above-mentioned, wherein the controller controls the switch according to the temperature signal
Module is in the first working condition or the second working condition.
Preferably, charge control system above-mentioned, wherein when the temperature of the secondary cell is in preset temperature range,
The controller controls the switch module according to the temperature signal that the temperature detecting module transmits and is in the first work
State, first working condition are open state；When the temperature of the secondary cell exceeds the preset temperature range, institute
It states controller and the switch module is controlled in the second work shape according to the temperature signal that the temperature detecting module transmits
State, second working condition are in off state.
Preferably, charge control system above-mentioned, wherein the controller is the monolithic with digital-to-analogue conversion function
Machine.
Preferably, charge control system above-mentioned, wherein the temperature detecting module is by thermistor and first resistor
The bleeder circuit of composition.
Preferably, charge control system above-mentioned, wherein the thermistor is used to that the table in the secondary cell to be arranged
Face, for being connect with power supply, second end and the first resistor first end of the thermistor connect the first end of the thermistor
It connects, the second end of the first resistor is for being grounded；
Wherein, the second end of the thermistor is connect with the digital-to-analogue conversion connecting pin of the microcontroller.
Preferably, charge control system above-mentioned, wherein the temperature detecting module is platinum resistance or thermocouple.
Preferably, charge control system above-mentioned, wherein being connected with second between the switch module and the controller
Resistance.
It the purpose of this utility model and solves its technical problem and is also realized using technical solution below.According to this practicality
A kind of solar charging device of novel proposition comprising：
Charge control system and charging management chip；
The charge control system includes：
Controller；
Temperature detecting module, the temperature detecting module are used to detect the temperature of secondary cell, the temperature detecting module
It is connect with the controller, the temperature signal for obtaining the temperature for detecting secondary cell sends the controller to；
Switch module, the switch module are separately connected the controller and the secondary cell；
Wherein, the controller can control the working condition of the switch module, and institute is realized by the switch module
State the switching of the charged state of secondary cell；
Wherein, the switch module of the charge control system is connect with charging management chip, for controlling the charging valve
Manage the working condition of chip.
It the purpose of this utility model and solves its technical problem following technical measures also can be used to further realize.
Preferably, solar charging device above-mentioned, wherein the temperature of the switch module and the charging management chip
Detect pin connection.
Preferably, solar charging device above-mentioned, wherein the power supply of the switch module and the charging management chip
Pin connects.
Preferably, solar charging device above-mentioned further includes：Controller power source, the controller power source with it is described
Controller connection in charge control system, for powering for the controller；
Program download module, described program download module are connect with the controller, for upload and download control program；
Solar components voltage detection module, the solar components voltage detection module and the solar charging device
Solar components connection, the operating voltage for detecting solar components；
Secondary battery voltage detection module, the secondary electricity of the secondary battery voltage detection module and solar charging device
Pond connects, for detecting voltage when secondary cell charging.
By above-mentioned technical proposal, the utility model charge control system and solar charging device are at least with following excellent
Point：
In technical solutions of the utility model, charge control system is by controller, temperature detecting module and switch module structure
At temperature detecting module can detect the temperature of secondary cell, and corresponding temperature signal is transferred to controller, control in this way
Device can be judged according to the temperature signal and predetermined temperature range of reception, when the temperature of secondary cell is default
When in temperature range, the temperature signal control switch module that controller is transmitted according to temperature detecting module is in the first work
State, such as control switch module are in open state；When the temperature of secondary cell exceeds preset temperature range, controller root
The temperature signal control switch module transmitted according to temperature detecting module is in the second working condition, such as controls switch module
It is closed, and then by the first working condition or the second working condition of above-mentioned light modules, makes solar charging
The charging management chip of electric installation is in the charged state to secondary cell or stops charged state.To sum up, the utility model
To the restriction of temperature when the controller of offer can charge according to secondary cell, the setting of preset temperature range, Jin Ergen are carried out
According to above-mentioned control mode, charge control can be carried out to the secondary cell of different constituents, solved in the prior art to the sun
The energy charging temperature control technical problem inconsistent with restriction of the secondary cell to charging temperature, improves the utilization rate of solar energy.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Description of the drawings
Fig. 1 is a kind of electric connection structure schematic diagram for charge control system that the embodiments of the present invention one provide；
Fig. 2 is a kind of structural schematic diagram for bleeder circuit that the embodiments of the present invention one provide；
Fig. 3 is a kind of electric connection structure schematic diagram for solar charging device that the embodiments of the present invention two provide；
Fig. 4 is the electric connection structure signal for another solar charging device that the embodiments of the present invention two provide
Figure.
Specific implementation mode
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model is taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes charge control system and solar charging device its
Specific implementation mode, structure, feature and its effect are described in detail as after.In the following description, different " embodiment " or
What " embodiment " referred to is not necessarily the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can
It is combined by any suitable form.
Embodiment one
As shown in Figure 1, the charge control system that the embodiments of the present invention one propose comprising：Controller 1, temperature
Detection module 2 and switch module 3；The temperature detecting module 2 is used to detect the temperature of secondary cell, the temperature detection mould
Block 2 is connect with the controller 1 for sending the temperature signal that the temperature for detecting secondary cell obtains to the controller 1；
The switch module 3 is separately connected the controller 1 and the secondary cell；Wherein, the controller 1 can control the mould that opens the light
The working condition of block 3 realizes the switching of the charged state of the secondary cell by the switch module 3.Wherein, the temperature
Detection module 2 detects the temperature of the secondary cell and sends corresponding temperature signal to the controller 1；When the secondary electricity
When the temperature in pond is in preset temperature range, temperature signal that the controller 1 is transmitted according to the temperature detecting module 2
It controls the switch module 3 and is in the first working condition, first working condition is open state；When the secondary cell
When temperature exceeds the preset temperature range, temperature signal that the controller 1 is transmitted according to the temperature detecting module 2
It controls the switch module 3 and is in the second working condition, second working condition is in off state.
Specifically, controller be can set temperature range, and temperature signal can be received and done according to temperature signal
Go out the control device of judgement, such as can be microcontroller, the preset temperature range in controller can be filled according to secondary cell
The requirement of temperature is specifically set when electric, such as when secondary cell is lithium battery, preset temperature range can be 0-
60 degrees Celsius.Temperature detecting module can be any type of device or circuit that can detect secondary cell temperature, and temperature
The test side of detection module needs to be arranged on the surface of secondary cell, so as to fast and accurately detect the temperature of secondary cell
Degree and temperature detecting module needs are connect with the detection signal input port of controller, so as to by the temperature of secondary cell
Degree is transferred to controller in a manner of electric signal, and controller is allow to determine whether that secondary cell is suitable according to temperature signal
Within the scope of charging temperature.Switch module can be any switch that controller can be used to control break-make, such as can be switch
The electric-controlled switch that circuit can either be controlled by electric signal；Wherein the input terminal of switch module needs the output with controller
End connection.In addition, the power supply of above-mentioned controller, temperature detecting module and switch module can directly use solar charging
Power supply in electric installation, specific electric connection mode can refer to the prior art, and details are not described herein again.
In technical solutions of the utility model, charge control system is by controller, temperature detecting module and switch module structure
At temperature detecting module can detect the temperature of secondary cell, and corresponding temperature signal is transferred to controller, control in this way
Device can be judged according to the temperature signal and predetermined temperature range of reception, when the temperature of secondary cell is default
When in temperature range, the temperature signal control switch module that controller is transmitted according to temperature detecting module is in the first work
State, such as control switch module are in open state；When the temperature of secondary cell exceeds preset temperature range, controller root
The temperature signal control switch module transmitted according to temperature detecting module is in the second working condition, such as controls switch module
It is closed, and then by the first working condition or the second working condition of above-mentioned light modules, makes solar charging
The charging management chip of electric installation is in the charged state to secondary cell or stops charged state.To sum up, the utility model
The controller of offer can change the restriction to temperature when charging according to secondary cell, carry out the setting of preset temperature range, in turn
According to above-mentioned control mode, charge control can be carried out to the secondary cell of different constituents, solution is charged in the prior art
Temperature is controlled limits charging temperature inconsistent technical problem with secondary cell, improves the utilization rate of solar energy.
As shown in Figure 1, in specific implementation, the controller 1 is the microcontroller with digital-to-analogue conversion function.
Specifically, due to temperature detecting module by detect secondary cell temperature caused by temperature signal be usually mould
Quasi- signal, so using the microcontroller with digital-to-analogue conversion function as controller；In addition, when temperature detecting module passes through
When temperature signal caused by the temperature of detection secondary cell is digital signal, the microcontroller with digital-to-analogue conversion function
It can be directly as controller, so being best selection using the microcontroller with digital-to-analogue conversion function as controller.
It in addition, above-mentioned preset temperature range is arranged in microcontroller, can be realized, not done herein specific by simply programming
Description.
As depicted in figs. 1 and 2, in specific implementation, the temperature detecting module 2 is by thermistor RT and first resistor
The bleeder circuit that R is constituted；Alternatively, the temperature detecting module is platinum resistance or thermocouple.
Specifically, when using the bleeder circuit being made of thermistor and first resistor as temperature detecting module, need
Thermistor is arranged on the surface of secondary cell, the preferably position of secondary cell fever most serious.
As shown in Fig. 2, in specific implementation, the structure of the bleeder circuit is：The first end of the thermistor RT is used
It being connect in power supply VCC, the second end of the thermistor RT is connect with first resistor R first ends, and the of the first resistor R
Two ends are for being grounded GND；Wherein, the second end of the thermistor RT and the digital-to-analogue conversion connecting pin of the microcontroller connect
It connects.
As shown in Figure 1, in specific implementation, the switch module 3 is switching circuit；Or, the switch module 3 is automatically controlled
Switch entity.
Specifically, switching circuit is that access or the circuit of open circuit can be realized according to the electric signal of controller, it is specific
Setting form can not limit；Electric-controlled switch can be common electric-controlled switch on the market, and the power of work needs and the sun
The specific power of energy charging unit matches.
It in specific implementation, can be in switching molding wherein in order to protect the stabilization and safety of entire charge control system
It is connected with protective resistance between the input terminal of block and the output end of the controller；Guarantor can also be set on above-mentioned bleeder circuit
Protect capacitance.
Embodiment two
As shown in figure 3, the embodiments of the present invention two propose a kind of solar charging device comprising：Charge control
System and charging management chip；The charge control system includes：Controller 1, temperature detecting module 2 and switch module 3；Institute
Temperature of the temperature detecting module 2 for detecting secondary cell is stated, the temperature detecting module 2 connect with the controller 1 and is used for
Send the temperature signal that the temperature for detecting secondary cell obtains to the controller 1；The switch module 3 is separately connected described
Controller 1 and the secondary cell；Wherein, the controller 1 can control the working condition of light modules 3, and according to institute
Charging to the secondary cell can be controlled by stating the working condition of switch module；Wherein, the switch of the charge control system
Module is connect with charging management chip, the working condition for controlling the charging management chip.
Specifically, the charging of the offer of above-described embodiment one can be used directly in the charge control system described in the present embodiment two
Control system, concrete implementation structure can be found in the related content described in above-described embodiment one, and details are not described herein again.
In technical solutions of the utility model, charge control system is by controller, temperature detecting module and switch module structure
At temperature detecting module can detect the temperature of secondary cell, and corresponding temperature signal is transferred to controller, control in this way
Device can be judged according to the temperature signal and predetermined temperature range of reception, when the temperature of secondary cell is default
When in temperature range, the temperature signal control switch module that controller is transmitted according to temperature detecting module is in the first work
State, such as control switch module are in open state；When the temperature of secondary cell exceeds preset temperature range, controller root
The temperature signal control switch module transmitted according to temperature detecting module is in the second working condition, such as controls switch module
It is closed, and then by the first working condition or the second working condition of above-mentioned light modules, makes solar charging
The charging management chip of electric installation is in the charged state to secondary cell or stops charged state.To sum up, the utility model
To the restriction of temperature when the controller of offer can charge according to secondary cell, the setting of preset temperature range, Jin Ergen are carried out
According to above-mentioned control mode, charge control can be carried out to the secondary cell of different constituents, solved in the prior art to the sun
Energy charging temperature control limits charging temperature inconsistent technical problem with secondary cell, improves the utilization rate of solar energy.
In specific implementation, the output end of the switch module and the temperature detection pin of the charging management chip connect
It connects；Or, the output end of the switch module is connect with the power pin of the charging management chip.
Specifically, when the temperature detection pin of the output end and charging management chip for switch module connects, charging control
The working method of system processed is as described below：
When the secondary cell of solar charging device is lithium battery, and preset temperature range is 0-60 degrees Celsius, this reality
It is with novel working method：First, the temperature of temperature detecting module detection secondary cell, and secondary cell temperature will be characterized
Signal sends controller to；Later, whether controller judges the temperature of secondary cell in preset temperature range according to temperature signal
In 0-60 degrees Celsius, if in this preset temperature range, controller control switch module is turned on and off, wherein working as switch
When module is connected to the input terminal of charging management chip, for example, be connected on temperature detection pin and switch module be switching circuit
When, the switch module of controller control at this time is closed, and then charging management chip is according to caused by self-contained fixed value resistance
Electric signal works, or second resistance can be connected between switching circuit and controller, is generated using second resistance
Electric signal works, continue as secondary cell charging, when secondary cell temperature exceed 0-60 degrees Celsius of preset temperature range,
Then controller control switch module is opened, and switching circuit makes the temperature detection pin of charging management chip be led with ground terminal at this time
It is logical, so that charging management chip is stopped the charging to secondary cell.And temperature detecting module is in lasting detection secondary cell
Temperature, while controller is also continuously into the judgement of trip temperature, and then realize the control charged to secondary cell.
Further, in specific implementation, as shown in figure 4, controller 1 is the monolithic with digital-to-analogue conversion function
Machine, connection pin PA2 are connect with switch module 3, this switch module 3 is that there are three the switching circuits of connecting pin for a tool；Switch
One connecting pin of module 3 is connect with the temperature detection pin of charging management chip 4, i.e., switch module 3 a connecting pin with
The TEMP pins of charging management chip 4 connect, the last one connecting pin ground connection of switch module；The digital simulation of controller 3 turns
Connecting pin AD TEMP1 are changed to connect with temperature detecting module 2；In addition, solar charging device further includes the control of controller connection
Device power supply 5 and program download module 6, wherein controller power source 5 are powered for device 1 in order to control, and program download module 6 is for uploading
And download control program, and the solar components voltage detection module 7 that is connect with the solar components of solar charging device,
The secondary battery voltage detection module 8 being connect with secondary cell, wherein solar components voltage detection module 7 are for detecting the sun
The operating voltage of energy component, secondary battery voltage detection module 8 are used to detect voltage when secondary cell charging.It is provided in Fig. 4
Physical circuit in, preset temperature range can be set in microcontroller, that is, correspond to temperature when secondary cell optimal charge
Range, for example, secondary cell be lithium battery when, preset temperature range be 0-60 degrees Celsius, when temperature detecting module 2 detect it is secondary
When the temperature of battery is within 0-60 degrees Celsius, microcontroller, which receives the temperature signal and controls switch module 3, closes its ground connection
Access makes charging management chip 4 be worked according to electric signal caused by self-contained fixed value resistance, or can open
It closes and connects second resistance between module 3 and controller 1, the electric signal generated using second resistance is worked, and is continued as secondary
Battery charges；When the temperature for the secondary cell that temperature detecting module 2 detects exceeds preset temperature range, then controller 1 controls
Switch module 3 opens the access of its ground connection, and switching circuit makes the temperature detection pin of charging management chip 4 be led with ground terminal at this time
It is logical, so that charging management chip 4 is stopped the charging to secondary cell.And temperature detecting module 2 is continuously detected secondary cell
Temperature, while controller 1 is also continuously into the judgement of trip temperature, and then realize the control charged to secondary cell.
In addition, when the output end of switch module 3 is connect with the power pin of charging management chip 4, work as solar recharging
The secondary cell of device is lithium battery, and when preset temperature range is 0-60 degrees Celsius, the working method of the utility model is：It is first
First, temperature detecting module 2 detects the temperature of secondary cell, and sends the signal for characterizing secondary cell temperature to controller 1；It
Afterwards, controller 1 judges the temperature of secondary cell whether in 0-60 degrees Celsius of preset temperature range according to temperature signal, if
In this preset temperature range, then controller 1 controls switch module 3 and opens, and then charging management chip 4 is made to work normally, and continues
It charges for secondary cell, when the temperature of secondary cell exceeds 0-60 degrees Celsius of preset temperature range, then controller 1 controls switching molding
Block is closed, and cuts off power supply of the solar components of solar charging device to charging management chip 4, and then stop to secondary cell
Charging.And temperature detecting module 2 is in the temperature of lasting detection secondary cell, while controller 1 is also continuously
Into the judgement of trip temperature, and then realize the control charged to secondary cell.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention,
It is still within the scope of the technical solutions of the present invention.
Claims (12)
1. a kind of charge control system, which is characterized in that it includes：
Controller；
Temperature detecting module, the temperature detecting module are used to detect the temperature of secondary cell, the temperature detecting module and institute
Controller connection is stated, the temperature signal for obtaining the temperature for detecting secondary cell sends the controller to；
Switch module, the switch module are separately connected the controller and the secondary cell；
Wherein, the controller controls the working condition of the switch module, and the secondary electricity is realized by the switch module
The switching of the charged state in pond.
2. charge control system according to claim 1, which is characterized in that
The controller controls the switch module according to the temperature signal and is in the first working condition or the second working condition.
3. charge control system according to claim 2, which is characterized in that
When the temperature of the secondary cell is in preset temperature range, the controller is transmitted according to the temperature detecting module
The temperature signal to come over controls the switch module and is in the first working condition, and first working condition is open state；When
When the temperature of the secondary cell exceeds the preset temperature range, the controller is transmitted across according to the temperature detecting module
The temperature signal come controls the switch module and is in the second working condition, and second working condition is in off state.
4. charge control system according to claim 1, which is characterized in that
The controller is the microcontroller with digital-to-analogue conversion function.
5. charge control system according to claim 4, which is characterized in that
The temperature detecting module is the bleeder circuit being made of thermistor and first resistor.
6. charge control system according to claim 5, which is characterized in that
For being arranged on the surface of the secondary cell, the first end of the thermistor is used to connect with power supply the thermistor
It connects, the second end of the thermistor and the first end of first resistor connect, and the second end of the first resistor is for being grounded；
Wherein, the second end of the thermistor is connect with the digital-to-analogue conversion connecting pin of the microcontroller.
7. charge control system according to claim 1, which is characterized in that
The temperature detecting module is platinum resistance or thermocouple.
8. charge control system according to claim 1, which is characterized in that
It is connected with second resistance between the switch module and the controller.
9. a kind of solar charging device, which is characterized in that it includes：
Charging management chip；
The charge control system as described in any in claim 1-8；
The switch module of the charge control system is connect with charging management chip, the work for controlling the charging management chip
Make state.
10. solar charging device according to claim 9, which is characterized in that
The switch module is connect with the temperature detection pin of the charging management chip.
11. solar charging device according to claim 9, which is characterized in that
The switch module is connect with the power pin of the charging management chip.
12. solar charging device according to claim 9, which is characterized in that further include：
Controller power source, the controller power source are connect with the controller in the charge control system, for being the control
Device is powered；
Program download module, described program download module are connect with the controller, for upload and download control program；
Solar components voltage detection module, the solar components voltage detection module and the solar charging device are too
Positive energy component connection, the operating voltage for detecting solar components；
The secondary cell of secondary battery voltage detection module, the secondary battery voltage detection module and solar charging device connects
It connects, for detecting voltage when secondary cell charging.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820601036.9U CN207766011U (en) | 2018-04-25 | 2018-04-25 | Charge control system and solar charging device |
| PCT/CN2018/102535 WO2019205393A1 (en) | 2018-04-22 | 2018-08-27 | Charging control system, solar energy charging device, umbrella junction box and umbrella |
| TW107135140A TW201944690A (en) | 2018-04-22 | 2018-10-04 | Charging control system, solar charging device, umbrella junction box and umbrella |
| JP2018227161A JP2019193555A (en) | 2018-04-22 | 2018-12-04 | Charging control system, solar charging device, junction box for umbrella, and umbrella |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820601036.9U CN207766011U (en) | 2018-04-25 | 2018-04-25 | Charge control system and solar charging device |
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| Publication Number | Publication Date |
|---|---|
| CN207766011U true CN207766011U (en) | 2018-08-24 |
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ID=63180356
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820601036.9U Active CN207766011U (en) | 2018-04-22 | 2018-04-25 | Charge control system and solar charging device |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205393A1 (en) * | 2018-04-22 | 2019-10-31 | 北京汉能光伏投资有限公司 | Charging control system, solar energy charging device, umbrella junction box and umbrella |
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2018
- 2018-04-25 CN CN201820601036.9U patent/CN207766011U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205393A1 (en) * | 2018-04-22 | 2019-10-31 | 北京汉能光伏投资有限公司 | Charging control system, solar energy charging device, umbrella junction box and umbrella |
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