CN107332509B - Battery heating device and method of solar energy system - Google Patents
Battery heating device and method of solar energy system Download PDFInfo
- Publication number
- CN107332509B CN107332509B CN201710624395.6A CN201710624395A CN107332509B CN 107332509 B CN107332509 B CN 107332509B CN 201710624395 A CN201710624395 A CN 201710624395A CN 107332509 B CN107332509 B CN 107332509B
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- battery
- heating
- storage battery
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 67
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 10
- 229910052744 lithium Inorganic materials 0.000 claims description 10
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the field of solar energy systems, in particular to a battery heating device of a solar energy system. The solar energy system comprises a battery plate and a storage battery, the battery heating device comprises a heating device and a DC (direct current) changer, the heating device wraps the storage battery or is arranged close to the storage battery, the input end of the DC changer is connected with the battery plate, the output end of the DC changer is respectively connected with the storage battery and the heating device, and the DC changer distributes electric energy of the battery plate to the heating device for heating or distributes the electric energy to the storage battery for charging. The invention also relates to a battery heating method of the solar energy system. According to the battery heating device and method of the solar energy system, heating equipment is adopted to heat the storage battery, electric energy of the heating equipment is electric energy provided by the battery panel, and electric energy distribution of the battery panel is distributed through the DC converter; the temperature control in the photovoltaic cell field is changed from simple heat preservation to intelligent temperature control.
Description
Technical Field
The invention relates to the field of solar energy systems, in particular to a battery heating device and method of a solar energy system.
Background
The existing lithium battery system applied to the photovoltaic is limited in discharge capacity in a low-temperature environment, and meanwhile, the problem of safety caused by charging at a low temperature, such as damage and even serious explosion of the lithium battery, is caused.
The existing heat preservation scheme basically adopts a heat insulation material to cover the lithium battery, and when the temperature is too low, the lithium battery is insulated from a battery box and the ambient temperature, but the scheme has the following defects:
1. The internal resistance of the battery only generates heat when in charging, and the heating effect is poor;
2. Meanwhile, the battery has to be charged to raise the temperature of the battery, but the low-temperature battery is charged to increase the danger;
3. the temperature of the lithium battery reaches a certain value very slowly by simply relying on the heat insulation material;
4. the battery is heated by electricity stored in the battery, so that the energy utilization rate of the battery is reduced.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a battery heating device of a solar system, which solves the problem of charging a lithium battery in a low-temperature environment.
The invention aims to solve the technical problems of the prior art, and provides a battery heating method of a solar system, which solves the problem of charging a lithium battery in a low-temperature environment.
The technical scheme adopted for solving the technical problems is as follows: there is provided a battery heating device of a solar energy system, the solar energy system comprising a panel and a battery, the battery heating device comprising a heating device and a DC converter, the heating device being wrapped around the battery or being arranged in close proximity to the battery, the input of the DC converter being connected to the panel and its output being connected to the battery and the heating device respectively, the DC converter distributing electrical energy of the panel to the heating device for heating or to the battery for charging.
Among them, the preferred scheme is: the heating device is a heating resistor sleeve or a heating resistor film.
Among them, the preferred scheme is: the battery heating device also comprises a processing unit and a temperature sensor arranged on the storage battery or the heating equipment, wherein the temperature sensor is connected with the processing unit, acquires the temperature value of the storage battery or the heating equipment and sends the temperature value to the processing unit; the processing unit is connected with the DC converter and adjusts the power output by the DC converter to the heating device according to the temperature value.
Among them, the preferred scheme is: the processing unit comprises a storage module, the storage module comprises a preset temperature value, the processing unit compares the received temperature value with the preset temperature value, and the power output by the DC converter to the heating equipment is controlled and regulated according to the comparison result.
Among them, the preferred scheme is: the DC converter comprises variable resistors respectively connected in series with two output ends, and the DC converter respectively controls the impedance change of the variable resistors and regulates the power output to the heating equipment and the storage battery.
Among them, the preferred scheme is: the DC converter comprises a signal input interface and a driving circuit, wherein the signal input interface is connected with the processing unit, and the driving circuit is connected with the battery plate, the heating equipment and the storage battery respectively; when the processing unit inputs a first level signal through the signal input interface, the driving circuit supplies power for the heating equipment by using the electric energy of the battery plate, and when the processing unit inputs a second level signal through the signal input interface, the driving circuit supplies power for the storage battery by using the electric energy of the battery plate.
Among them, the preferred scheme is: the processing unit comprises a plurality of temperature levels, the processing unit distributes power according to different temperature levels, and when the temperature is lower, the power of the DC converter for supplying power to the heating equipment is larger, and the power for supplying power to the storage battery is smaller.
Among them, the preferred scheme is: the storage battery is a lithium battery.
The technical scheme adopted for solving the technical problems is as follows: there is provided a battery heating method of a solar system including a panel and a storage battery provided with a heating device, the battery heating method comprising the steps of:
acquiring a temperature value of a storage battery or heating equipment;
If the temperature value is lower than the preset temperature value, distributing the electric energy of the battery plate to the heating equipment to heat the heating equipment;
and if the temperature is not lower than the preset temperature value, reducing or closing the electric energy distributed to the heating equipment, and distributing the electric energy of the battery plate to the storage battery.
The battery heating method preferably further comprises the following steps:
and if the temperature value is lower than the preset temperature value, distributing all the electric energy of the battery plate to the heating equipment, and controlling the heating equipment to heat.
Compared with the prior art, the solar energy system battery heating device and the solar energy system battery heating method have the advantages that the battery heating device is used for heating the storage battery, the electric energy of the heating device is the electric energy provided by the battery panel, and the electric energy distribution of the battery panel is distributed through the DC converter; the temperature control in the photovoltaic cell field is changed from simple heat preservation to intelligent temperature control; further, heating efficiency is improved, and damage caused by the self-charging problem of the storage battery is avoided.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a block diagram of a battery heating device according to the present invention;
Fig. 2 is a first block diagram of the battery heating apparatus based on the processing unit of the present invention;
Fig. 3 is a second block diagram of the battery heating apparatus based on the processing unit of the present invention;
FIG. 4 is a second block diagram of the battery heating device based on the memory module of the present invention;
fig. 5 is a schematic structural view of a variable resistor-based battery heating device of the present invention;
FIG. 6 is a schematic circuit diagram of a DC converter of the present invention;
FIG. 7 is a schematic circuit diagram of a charge control circuit according to the present invention;
FIG. 8 is a schematic flow chart of the battery heating method of the present invention;
fig. 9 is a schematic flow chart of a specific heating mode of the battery heating method of the present invention.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a preferred embodiment of a battery heating device for a solar energy system.
The battery heating device of the solar energy system comprises a battery plate and a storage battery, wherein the battery heating device comprises a heating device and a DC (direct current) converter, the heating device wraps the storage battery or is arranged close to the storage battery, the input end of the DC converter is connected with the battery plate, the output end of the DC converter is respectively connected with the storage battery and the heating device, and the DC converter distributes electric energy of the battery plate to the heating device for heating or distributes the electric energy to the storage battery for charging.
Preferably, the heating device is a heating resistor sleeve or a heating resistor film. The heating resistor sleeve or the heating resistor film is an electric heating element formed by manufacturing special metal foil into various resistor circuits and sealing the resistor circuits between two insulating sheets, and the insulating sheets can also be made of other insulating materials, such as high-temperature resistant cloth, so as to form the heating resistor sleeve. And the heating resistor sleeve or the heating resistor film generates heat in a planar manner, so that the heating resistor sleeve or the heating resistor film has high heat efficiency, energy conservation, power saving, quick temperature rise and small heat inertia. And the material is soft, so that a non-planar object can be heated uniformly, and the use temperature is high and can reach 100 degrees. And, long service life, no open fire, safety and reliability. And the temperature control is accurate, the thermal inertia is small, the corrosion resistance is strong, the heat distribution is random, and the electrothermal film with various shapes, specifications, voltages and heating temperatures can be developed and designed according to the requirements without being limited by the use voltage and the temperature.
Preferably, the storage battery is a lithium battery.
In this embodiment, the solar energy system includes a solar energy controller, and a solar panel, a storage battery and an external load which are respectively in a training stage with the solar energy controller, the solar energy controller includes four ports, namely an electric energy input port, an energy storage port, a discharge port and an electric energy output port, the solar energy controller is connected with the solar panel through the electric energy input port, and is connected with the storage battery through the energy storage port and the discharge port, and is connected with the external load through the electric energy output port.
The solar panel generates electric energy and transmits the electric energy to the solar controller through the electric energy input port, and the solar controller charges the storage battery through the energy storage port by using the received electric energy, wherein the charging stage is the charging stage; the storage battery performs discharging operation according to the control of the solar controller, electric energy is transmitted to the solar controller through the discharging port, and the solar controller supplies power for an external load through the electric energy output port, and the discharging stage is the discharging stage.
As shown in fig. 2 and 3, the present invention provides a preferred embodiment of a battery heating device based on a processing unit.
The battery heating device also comprises a processing unit and a temperature sensor arranged on the storage battery or the heating equipment, wherein the temperature sensor is connected with the processing unit, acquires the temperature value of the storage battery or the heating equipment and sends the temperature value to the processing unit; the processing unit is connected with the DC converter and adjusts the power output by the DC converter to the heating device according to the temperature value.
The temperature sensor is preferably arranged on the outer surface of the accumulator or between the accumulator and the heating device, but also on the heating device.
The processing unit is preferably a processing chip arranged on a control circuit board of the solar controller, and an external component, and the solar controller receives the electric energy of the solar panel and distributes the electric energy through the DC converter, and the processing unit intervenes in the electric energy distribution.
As shown in fig. 4, the present invention provides a preferred embodiment of a battery heating device based on a memory module.
The processing unit comprises a storage module, the storage module comprises a preset temperature value, the processing unit compares the received temperature value with the preset temperature value, and the power output by the DC converter to the heating equipment is controlled and regulated according to the comparison result.
Further, the preset temperature value of the storage module can be adjusted according to the ambient temperature, namely, when the external temperature is high, the preset temperature is reduced, and when the external temperature is low, the preset temperature is increased, so that the temperature of the storage battery is prevented from excessively decreasing.
Further, the processing unit comprises a plurality of temperature levels, the processing unit distributes power according to different temperature levels, and when the temperature is lower, the power of the DC converter for supplying power to the heating equipment is larger, and the power for supplying power to the storage battery is smaller.
As shown in fig. 5, the present invention provides a preferred embodiment of a variable resistor based battery heating device.
The DC converter comprises variable resistors respectively connected in series with two output ends, and the DC converter respectively controls the impedance change of the variable resistors and regulates the power output to the heating equipment and the storage battery.
As shown in fig. 6 and 7, the present invention provides a preferred embodiment of the circuit of the battery heating device.
The DC converter comprises a signal input interface and a driving circuit, wherein the signal input interface is connected with the processing unit, and the driving circuit is connected with the battery plate, the heating equipment and the storage battery respectively; when the processing unit inputs a first level signal through the signal input interface, the driving circuit supplies power for the heating equipment by using the electric energy of the battery plate, and when the processing unit inputs a second level signal through the signal input interface, the driving circuit supplies power for the storage battery by using the electric energy of the battery plate.
Specifically, referring to fig. 6, if the temperature value is lower than the preset temperature value, the processing unit controls ctr_temp to be high level, the transistor Q3 is turned on, the transistor Q1 is turned on, so as to drive the MOSFET Q2 to be turned on, the solar cell energy heats the heating device, when the processing unit collects that the heating device or the battery temperature is higher than the preset temperature value, the processing unit controls ctr_temp to be low level, the transistor Q3 is turned off, the transistor Q1 is turned off, so as to drive the MOSFET Q2 to be turned off, and all the solar cell energy supplies power to the battery.
Further, referring to fig. 7, fig. 7 is a charge control circuit, which is a BUCK converter with maximum power tracking, and the principle is as follows: if the temperature value of the heating device or the battery is lower than the preset temperature value, the charging circuit of the DC converter stops working, the solar battery stops charging the battery, and the energy of the solar battery completely heats the heating device; if the temperature value of the heating device or the battery is higher than the preset temperature value, the heating circuit stops working, and the energy of the solar battery is supplied to the battery for charging through the DC converter charging circuit.
If the temperature value of the heating device or the battery is lower than the preset temperature value, the processing unit automatically distributes heating power and charging power through the impedance of the controller heating control circuit and the charging circuit of the DC converter, particularly reduces the charging power, so that most of the power of the solar battery heats the heating device or the battery, particularly, the processing unit can also distribute the power according to different temperature levels, and the lower the temperature is, the smaller the charging power of the DC converter is, and the larger the heating power is.
As shown in fig. 8 and 9, the present invention provides a preferred embodiment of a method for heating a battery of a solar system.
A battery heating method of a solar energy system, the solar energy system comprising a battery panel and a storage battery, the storage battery being provided with a heating device, the battery heating method comprising the steps of:
S11, acquiring a temperature value of a storage battery or heating equipment;
S12, if the temperature value is lower than the preset temperature value, distributing the electric energy of the battery plate to heating equipment to heat the heating equipment;
and S13, if the temperature is not lower than the preset temperature value, reducing or closing the electric energy distributed to the heating equipment, and distributing the electric energy of the battery plate to the storage battery.
Specifically, the solar energy system comprises a panel and a storage battery, the battery heating device comprises a heating device and a DC (direct current) converter, the heating device wraps the storage battery or is arranged close to the storage battery, the input end of the DC converter is connected with the panel, the output end of the DC converter is respectively connected with the storage battery and the heating device, and the DC converter distributes electric energy of the panel to the heating device for heating or distributes the electric energy to the storage battery for charging.
Further, the battery heating method further comprises the steps of:
And S122, if the temperature value is lower than the preset temperature value, distributing all the electric energy of the battery plate to the heating equipment, and controlling the heating equipment to heat.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the invention, but rather is intended to cover all modifications and variations within the scope of the present invention as defined in the appended claims.
Claims (4)
1. A battery heating device of a solar energy system, the solar energy system comprising a battery plate and a storage battery, characterized in that: the battery heating device comprises a heating device and a DC (direct current) converter, wherein the heating device wraps a storage battery or is arranged close to the storage battery, the input end of the DC converter is connected with a battery plate, the output end of the DC converter is respectively connected with the storage battery and the heating device, and the DC converter distributes electric energy of the battery plate to the heating device for heating or to the storage battery for charging;
the battery heating device also comprises a processing unit and a temperature sensor arranged on the storage battery or the heating equipment, wherein the temperature sensor is connected with the processing unit, acquires the temperature value of the storage battery or the heating equipment and sends the temperature value to the processing unit; the processing unit is connected with the DC converter and adjusts the power output by the DC converter to the heating equipment according to the temperature value;
The processing unit comprises a plurality of temperature levels, the processing unit distributes power according to different temperature levels, when the temperature is lower, the power of the DC converter for supplying power to the heating equipment is higher, and the power for supplying power to the storage battery is lower;
The heating device is a heating resistor sleeve or a heating resistor film;
the processing unit comprises a storage module, the storage module comprises a preset temperature value, the processing unit compares the received temperature value with the preset temperature value and controls and adjusts the power output to the heating equipment by the DC change device according to the comparison result, the DC change device comprises variable resistors respectively connected with two output ends in series, the DC change device respectively controls the impedance change of the variable resistors and adjusts the power output to the heating equipment and the storage battery;
The DC converter comprises a signal input interface and a driving circuit, wherein the signal input interface is connected with the processing unit, and the driving circuit is connected with the battery plate, the heating equipment and the storage battery respectively; when the processing unit inputs a first level signal through the signal input interface, the driving circuit supplies power for the heating equipment by using the electric energy of the battery plate, and when the processing unit inputs a second level signal through the signal input interface, the driving circuit supplies power for the storage battery by using the electric energy of the battery plate.
2. The battery heating apparatus according to claim 1, wherein: the storage battery is a lithium battery.
3. A method for heating a battery of a solar system including a panel and a storage battery, wherein the method is applied to the battery heating apparatus according to claim 1 or 2, the battery heating apparatus including a heating device provided on the storage battery, the method comprising the steps of:
acquiring a temperature value of a storage battery or heating equipment;
If the temperature value is lower than the preset temperature value, distributing the electric energy of the battery plate to the heating equipment to heat the heating equipment;
and if the temperature is not lower than the preset temperature value, reducing or closing the electric energy distributed to the heating equipment, and distributing the electric energy of the battery plate to the storage battery.
4. A battery heating method according to claim 3, characterized in that the battery heating method further comprises the step of:
and if the temperature value is lower than the preset temperature value, distributing all the electric energy of the battery plate to the heating equipment, and controlling the heating equipment to heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710624395.6A CN107332509B (en) | 2017-07-27 | 2017-07-27 | Battery heating device and method of solar energy system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710624395.6A CN107332509B (en) | 2017-07-27 | 2017-07-27 | Battery heating device and method of solar energy system |
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| Publication Number | Publication Date |
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| CN107332509A CN107332509A (en) | 2017-11-07 |
| CN107332509B true CN107332509B (en) | 2024-05-17 |
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| CN111864291A (en) * | 2020-08-03 | 2020-10-30 | 普联技术有限公司 | Control method and device for lithium battery auxiliary heating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201444623U (en) * | 2009-07-23 | 2010-04-28 | 辽宁九夷三普电池有限公司 | Household multifunctional solar storage and application system |
| CN105391157A (en) * | 2015-12-21 | 2016-03-09 | 浙江尚越新能源开发有限公司 | Long-acting integrated power supply system based on thin-film solar battery and charging method |
| CN106410940A (en) * | 2016-11-03 | 2017-02-15 | 山东建筑大学 | Solar cell with battery low-temperature auxiliary heating function and control method of solar cell |
| CN207265976U (en) * | 2017-07-27 | 2018-04-20 | 深圳硕日新能源科技有限公司 | A kind of battery heating device of solar energy system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10181814B2 (en) * | 2015-09-15 | 2019-01-15 | Wilson Chan | Solar battery system for low temperature operation |
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- 2017-07-27 CN CN201710624395.6A patent/CN107332509B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201444623U (en) * | 2009-07-23 | 2010-04-28 | 辽宁九夷三普电池有限公司 | Household multifunctional solar storage and application system |
| CN105391157A (en) * | 2015-12-21 | 2016-03-09 | 浙江尚越新能源开发有限公司 | Long-acting integrated power supply system based on thin-film solar battery and charging method |
| CN106410940A (en) * | 2016-11-03 | 2017-02-15 | 山东建筑大学 | Solar cell with battery low-temperature auxiliary heating function and control method of solar cell |
| CN207265976U (en) * | 2017-07-27 | 2018-04-20 | 深圳硕日新能源科技有限公司 | A kind of battery heating device of solar energy system |
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