CN112542598A - System and method for heating metal air battery electrolyte by using self-oxygen production mode - Google Patents
System and method for heating metal air battery electrolyte by using self-oxygen production mode Download PDFInfo
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- CN112542598A CN112542598A CN202011544187.3A CN202011544187A CN112542598A CN 112542598 A CN112542598 A CN 112542598A CN 202011544187 A CN202011544187 A CN 202011544187A CN 112542598 A CN112542598 A CN 112542598A
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
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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
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
- H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04268—Heating of fuel cells during the start-up of the fuel cells
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- 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
- Y02E60/30—Hydrogen technology
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Abstract
The invention provides a system and a method for heating electrolyte of a metal air battery by using a self-oxygen production mode, wherein the system comprises an electrolyte tank, a galvanic pile tank and a circulating pipeline for circulating the electrolyte between the electrolyte tank and the galvanic pile tank, and the circulating pipeline is provided with a circulating pump; the oxygen candle also comprises an oxygen candle, a connecting device and a control device; the oxygen candle is utilized, so that the ambient oxygen concentration is stabilized in the optimal working concentration range, the smooth proceeding of the discharge reaction of the metal-air battery is ensured, and the discharge performance of the metal-air battery is improved; the invention uses the released heat to heat the electrolyte, so that the temperature of the electrolyte is raised to a proper temperature value, the performance of the metal-air battery is further improved, and the problems of long starting time and poor discharge performance of the metal-air battery in a low-temperature environment are solved.
Description
Technical Field
The invention relates to the technical field of metal-air batteries, in particular to a system and a method for heating electrolyte of a metal-air battery by using a self-oxygen-generating mode.
Background
The metal-air battery utilizes chemical reaction to release electric energy, the cathode is metal, the anode is oxygen, and oxygen is continuously consumed in the reaction process; in order to solve the problems, an electric heating mode is usually adopted to improve the temperature of the electrolyte, and the method consumes additional power supply, so that the system is complicated; the volume in the closed space is very limited, the oxygen content is insufficient, and additional oxygen needs to be supplemented to meet the requirement of battery reaction; in order to supplement extra oxygen, an oxygen supply device is adopted to produce oxygen, the oxygen supply device is usually formed into a system independently, and the oxygen candle is a cylinder or a column body, so that the oxygen candle occupies a large volume.
With the development of metal-air battery technology, the application problems of low-temperature starting and oxygen supply in a closed environment are increasingly highlighted, and the low-temperature starting and the oxygen supply in the closed environment are often isolated in the prior art, so that the system is complex and resources are wasted.
Disclosure of Invention
The invention aims to provide a system and a method for heating electrolyte of a metal-air battery by using a self-oxygen-producing mode, which can not only meet the oxygen supply required by the discharge reaction of a metal-controlled battery, but also solve the problem of low-temperature starting by using heat released during oxygen production of an oxygen candle to heat the electrolyte.
In order to achieve the purpose, the invention adopts the following technical scheme:
the system for heating the electrolyte of the metal-air battery by utilizing the self-oxygen production mode comprises an electrolyte tank, a galvanic pile tank and a circulating pipeline for circulating the electrolyte between the electrolyte tank and the galvanic pile tank, wherein the circulating pipeline is provided with a circulating pump; the oxygen candle is arranged above the electrolyte tank through the connecting device; the bottom surface of the oxygen candle is made of heat conducting materials; the connecting device comprises an electromagnet, a spring and an iron block, wherein the spring is used for connecting the iron core of the electromagnet with the iron block; the iron core and the iron block of the electromagnet are respectively fixed on the upper surface of the electrolyte tank and the corresponding position of the bottom surface of the oxygen candle; the control device comprises a microprocessor and a temperature transmitter arranged at the bottom of the electrolyte tank, the output end of the temperature transmitter is electrically connected with the input end of the microprocessor, the output end of the microprocessor is electrically connected with a coil of an electromagnet through an electromagnet control circuit, and the output end of the microprocessor is electrically connected with the trigger end of the oxygen candle.
The oxygen candle comprises conducting layer, the layer of igniting and the reaction layer that from top to bottom piles up in proper order, is provided with the trigger lead wire on the conducting layer, and the trigger lead wire is connected with the intraformational netted wire of wire for ignite the intraformational ignition medicine of igniting, ignite the layer and be used for providing the required heat of reaction for the oxygen candle medicine piece on reaction layer.
The oxygen candles are integrated on the heat conducting plate, the heat conducting plate is arranged above the electrolyte tank through a connecting device, and the triggering ends of the oxygen candles are electrically connected with the output end of the microprocessor; an oxygen concentration sensor is arranged outside the galvanic pile box, and the output end of the oxygen concentration sensor is connected with the input end of the microprocessor.
The number of the connecting devices is four, and the four connecting devices are respectively arranged at four corners of the upper surface of the electrolyte tank.
The corresponding positions of the upper surface of the electrolyte box and the four corners of the bottom surface of the heat-conducting plate are respectively provided with a groove, and the iron core and the iron block of the electromagnet are respectively arranged in the grooves of the upper surface of the electrolyte box and the bottom surface of the heat-conducting plate.
The method for heating the electrolyte of the metal-air battery by using the self-generated oxygen mode is characterized in that an electrolyte heating target temperature value T1 and an ambient oxygen concentration target value C1 are arranged in a microprocessor; when the metal air battery works, the microprocessor triggers a fixed number of oxygen candles, and collects the temperature of the electrolyte in the electrolyte box through a temperature transmitter arranged at the bottom of the electrolyte box; if the temperature of the electrolyte is lower than the electrolyte heating target temperature value T1, the microprocessor controls the electromagnetic valve to act, the electromagnetic valve adsorbs the iron block and the compression spring through magnetic force, so that the bottom surface of the heat conducting plate is in contact with the upper surface of the electrolyte tank, and the electrolyte tank is heated through heat released in the oxygen production process of the oxygen candle; when the metal-air battery works, the microprocessor also acquires the real-time ambient oxygen concentration through the oxygen concentration sensor arranged outside the galvanic pile box, and controls the number of oxygen candle triggers according to the relation between the real-time ambient oxygen concentration and the ambient oxygen concentration target value C1.
The method for controlling the number of oxygen candle triggers by the microprocessor according to the relation between the real-time ambient oxygen concentration and the ambient oxygen concentration target value C1 comprises the following steps:
measuring the oxygen release rate of a single oxygen candle during working and the ambient oxygen concentration of the metal-air battery during normal working by using a test method, defining the ambient oxygen concentration of the metal-air battery during normal working as an ambient oxygen concentration target value C1, and calculating a relation curve between the number of triggered oxygen candles and the ambient oxygen concentration; when the metal-air battery works, the microprocessor triggers the oxygen candles with a fixed quantity, and in the working process of the metal-air battery, the microprocessor collects a real-time environment oxygen concentration value through an oxygen concentration sensor arranged outside the electric pile box, and when the real-time environment oxygen concentration value is smaller than an environment oxygen concentration target value C1, the microprocessor increases the number of oxygen candle triggers according to a relation curve of the number of oxygen candle triggers and the environment oxygen concentration. The invention has the beneficial effects that:
according to the system and the method for heating the electrolyte of the metal-air battery by using the self-oxygen-producing mode, the oxygen candle is used, so that the concentration of the ambient oxygen is stabilized in the optimal working concentration range, the smooth proceeding of the discharge reaction of the metal-air battery is ensured, and the discharge performance of the metal-air battery is improved; the invention uses the released heat to heat the electrolyte, so that the temperature of the electrolyte is raised to a proper temperature value, the performance of the metal-air battery is further improved, and the problems of long starting time and poor discharge performance of the metal-air battery in a low-temperature environment are solved; the invention also utilizes the connecting device and the control device to control whether the oxygen candle heats the electrolyte tank so as to ensure that the temperature of the electrolyte can be stabilized near the optimal temperature value, thereby further improving the discharge performance of the metal-air battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of a plurality of oxygen candles according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2: the system for heating the electrolyte of the metal air battery by using the self-generated oxygen mode comprises an electrolyte tank 3, a galvanic pile tank 2 and a circulating pipeline 5 for enabling the electrolyte to circulate between the electrolyte tank 3 and the galvanic pile tank 2, wherein a circulating pump 4 is arranged on the circulating pipeline 5; the oxygen candle device is characterized by further comprising an oxygen candle 6, a connecting device and a control device, wherein the oxygen candle 6 is arranged above the electrolyte tank 3 through the connecting device; the bottom surface of the oxygen candle 6 is made of heat conducting materials; the connecting device comprises an electromagnet, a spring 8 and an iron block 9, wherein the spring 8 is used for connecting an iron core 7 of the electromagnet with the iron block 9; the iron core 7 and the iron block 9 of the electromagnet are respectively fixed at the corresponding positions of the upper surface of the electrolyte tank 3 and the bottom surface of the oxygen candle 6; the control device comprises a microprocessor and a temperature transmitter arranged at the bottom of the electrolyte tank 3, the output end of the temperature transmitter is electrically connected with the input end of the microprocessor, the output end of the microprocessor is electrically connected with a coil of an electromagnet through an electromagnet control circuit, and the output end of the microprocessor is electrically connected with the trigger end of the oxygen candle 6.
The working principle of the system for heating the electrolyte of the metal-air battery by using the self-generated oxygen mode is as follows:
2NaClO3 =2NaCl+3O2 +Q1；
wherein NaClO3The enthalpy value is-365.8 kJ/mol, the enthalpy value of NaCl is-411.2 kJ/mol, and O2Enthalpy value of 0 kJ/mol, therefore Q1At 90.8 kJ/mol, i.e. per mol of NaClO3The reaction is carried out to release 90.8 kJ heat;
setting an electrolyte heating target temperature value T1 in the microprocessor; when the metal-air battery 1 works, the microprocessor triggers the oxygen candle 6 to work to release oxygen, so that the ambient oxygen concentration value meets the discharge reaction requirement of the metal-air battery 1; further, the microprocessor collects the temperature of the electrolyte in the electrolyte tank 3 through a temperature transmitter arranged at the bottom of the electrolyte tank 3; if the temperature of the electrolyte is lower than the electrolyte heating target temperature value T1, the microprocessor controls the electromagnetic valve to act, the electromagnetic valve adsorbs the iron block 9 and the compression spring 8 through magnetic force, so that the bottom surface of the heat conducting plate 64 is in contact with the upper surface of the electrolyte tank 3, and the electrolyte tank 3 is heated through heat released in the oxygen production process of the oxygen candle 6.
The preferred scheme is as follows: the oxygen candle 6 is composed of a conductive layer 61, an ignition layer 62 and a reaction layer 63 which are sequentially stacked from top to bottom, wherein a trigger lead is arranged on the conductive layer 61, the trigger lead is connected with a reticular wire in the wire layer and is used for igniting ignition powder in the ignition layer 62, and the ignition layer 62 is used for providing heat required by reaction for the oxygen candle 6 powder block of the reaction layer 63; the oxygen candle 6 can supply sufficient oxygen for the reaction of the metal-air battery 1, and can release a large amount of heat when generating oxygen, so that the metal-air battery 1 can be heated by electrolyte to work at a proper temperature.
The preferred scheme is as follows: the oxygen candles 6 are multiple, the oxygen candles 6 are integrated on the heat conducting plate 64, the heat conducting plate 64 is arranged above the electrolyte tank 3 through a connecting device, the triggering ends of the oxygen candles 6 are electrically connected with the output end of the microprocessor, an oxygen concentration sensor is arranged outside the pile tank 2, and the output end of the oxygen concentration sensor is connected with the input end of the microprocessor so as to adjust the triggering quantity of the oxygen candles 6; specifically, when the metal-air battery 1 works, the microprocessor triggers a fixed number of oxygen candles 6, the specific number can be determined according to the oxygen release rate of a single oxygen candle 6, in the working process of the metal-air battery 1, the microprocessor collects a real-time ambient oxygen concentration value through an oxygen concentration sensor arranged outside the electric pile box 2, and when the real-time ambient oxygen concentration value is smaller than an ambient oxygen concentration target value C1, the microprocessor increases the number of oxygen candles 6 triggering.
The preferred scheme is as follows: the number of the connecting devices is four, and the four connecting devices are respectively arranged at four corners of the upper surface of the electrolyte tank 3; stability in contact and separation of the bottom surface of the heat conduction plate 64 with and from the upper surface of the electrolyte tank 3 is ensured.
The preferred scheme is as follows: the corresponding position in the four corners of the upper surface of electrolyte case 3 and the bottom surface of heat-conducting plate 64 all be provided with the recess, iron core 7 and the iron plate 9 of electro-magnet set up respectively in the recess of the upper surface of electrolyte case 3 and the bottom surface of heat-conducting plate 64, the setting of recess can optimize space utilization on the one hand, on the other hand also can further guarantee the stability when the bottom surface of heat-conducting plate 64 contacts with the upper surface of electrolyte case 3 and separates.
The preferred scheme is as follows: the electrolytic cell further comprises a radiator 10, wherein the radiator 10 is arranged on the circulating pipeline 5 between the electrolyte tank 3 and the electric pile tank 2, and the output end of the microprocessor is electrically connected with the input end of the radiator 10 through a control circuit of the radiator 10; through the arrangement of the radiator 10, the temperature of the electrolyte can be reduced, the temperature of the electrolyte is stabilized in the optimal working temperature range, and the performance of the metal-air battery 1 is further improved.
The invention relates to a method for heating electrolyte of a metal-air battery 1 by using a self-generated oxygen mode, which comprises the following steps:
setting an electrolyte heating target temperature value T1 and an ambient oxygen concentration target value C1 in the microprocessor; when the metal air battery works, the microprocessor triggers a fixed number of oxygen candles, and collects the temperature of the electrolyte in the electrolyte box through a temperature transmitter arranged at the bottom of the electrolyte box; if the temperature of the electrolyte is lower than the electrolyte heating target temperature value T1, the microprocessor controls the electromagnetic valve to act, the electromagnetic valve adsorbs the iron block and the compression spring through magnetic force, so that the bottom surface of the heat conducting plate is in contact with the upper surface of the electrolyte tank, and the electrolyte tank is heated through heat released in the oxygen production process of the oxygen candle; when the metal-air battery works, the microprocessor also acquires the real-time ambient oxygen concentration through the oxygen concentration sensor arranged outside the galvanic pile box, and controls the number of oxygen candle triggers according to the relation between the real-time ambient oxygen concentration and the ambient oxygen concentration target value C1.
Preferably, the method for controlling the number of oxygen candle 6 triggers by the microprocessor according to the relationship between the real-time ambient oxygen concentration and the ambient oxygen concentration target value C1 comprises the following steps: measuring the oxygen release rate of a single oxygen candle 6 during working and the ambient oxygen concentration of the metal-air battery 1 during normal working by using a test method, defining the ambient oxygen concentration of the metal-air battery 1 during normal working as an ambient oxygen concentration target value C1, and calculating a relation curve between the number of triggered oxygen candles 6 and the ambient oxygen concentration; during the working process of the metal-air battery 1, the microprocessor collects the real-time ambient oxygen concentration value through the oxygen concentration sensor arranged outside the electric pile box 2, and when the real-time ambient oxygen concentration value is smaller than an ambient oxygen concentration target value C1, the microprocessor increases the number of the oxygen candles 6 according to the relation curve of the number of the oxygen candles 6 triggered and the ambient oxygen concentration.
The invention has the beneficial effects that:
according to the system and the method for heating the electrolyte of the metal-air battery by using the self-oxygen-production mode, the oxygen candle 6 is used, so that the concentration of the ambient oxygen is stabilized in the optimal working concentration range, the smooth discharge reaction of the metal-air battery 1 is ensured, and the discharge performance of the metal-air battery 1 is improved; the oxygen candle 6 releases heat in the process of generating oxygen through reaction, the released heat is used for heating the electrolyte, so that the temperature of the electrolyte is raised to a proper temperature value, the performance of the metal-air battery 1 is further improved, and the problems of long starting time and poor discharge performance of the metal-air battery 1 in a low-temperature environment are solved; the invention also utilizes the connecting device and the control device to control whether the oxygen candle 6 heats the electrolyte tank 3 or not so as to ensure that the temperature of the electrolyte can be stabilized near the optimal temperature value, thereby further improving the discharge performance of the metal-air battery 1.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The system for heating the electrolyte of the metal-air battery by utilizing the self-oxygen production mode comprises an electrolyte tank, a galvanic pile tank and a circulating pipeline for circulating the electrolyte between the electrolyte tank and the galvanic pile tank, wherein the circulating pipeline is provided with a circulating pump; the method is characterized in that: the oxygen candle is arranged above the electrolyte tank through the connecting device; the bottom surface of the oxygen candle is made of heat conducting materials; the connecting device comprises an electromagnet, a spring and an iron block, wherein the spring is used for connecting the iron core of the electromagnet with the iron block; the iron core and the iron block of the electromagnet are respectively fixed on the upper surface of the electrolyte tank and the corresponding position of the bottom surface of the oxygen candle; the control device comprises a microprocessor and a temperature transmitter arranged at the bottom of the electrolyte tank, the output end of the temperature transmitter is electrically connected with the input end of the microprocessor, the output end of the microprocessor is electrically connected with a coil of an electromagnet through an electromagnet control circuit, and the output end of the microprocessor is electrically connected with the trigger end of the oxygen candle.
2. The system for heating metal-air battery electrolyte using self-generated oxygen as claimed in claim 1, wherein: the oxygen candle comprises conducting layer, the layer of igniting and the reaction layer that from top to bottom piles up in proper order, is provided with the trigger lead wire on the conducting layer, and the trigger lead wire is connected with the intraformational netted wire of wire for ignite the intraformational ignition medicine of igniting, ignite the layer and be used for providing the required heat of reaction for the oxygen candle medicine piece on reaction layer.
3. The system for heating metal-air battery electrolyte using self-generated oxygen as claimed in claim 2, wherein: the oxygen candles are integrated on the heat conducting plate, the heat conducting plate is arranged above the electrolyte tank through a connecting device, and the triggering ends of the oxygen candles are electrically connected with the output end of the microprocessor; an oxygen concentration sensor is arranged outside the galvanic pile box, and the output end of the oxygen concentration sensor is connected with the input end of the microprocessor.
4. The system for heating metal-air battery electrolyte using self-generated oxygen as claimed in claim 3, wherein: the number of the connecting devices is four, and the four connecting devices are respectively arranged at four corners of the upper surface of the electrolyte tank.
5. The system for heating metal-air battery electrolyte using self-generated oxygen as claimed in claim 4, wherein: the corresponding positions of the upper surface of the electrolyte box and the four corners of the bottom surface of the heat-conducting plate are respectively provided with a groove, and the iron core and the iron block of the electromagnet are respectively arranged in the grooves of the upper surface of the electrolyte box and the bottom surface of the heat-conducting plate.
6. The method for heating the electrolyte of the metal-air battery by the self-oxygen-generating mode, which is performed by the system for heating the electrolyte of the metal-air battery by the self-oxygen-generating mode according to claim 5, is characterized in that:
setting an electrolyte heating target temperature value T1 and an ambient oxygen concentration target value C1 in the microprocessor; when the metal air battery works, the microprocessor triggers a fixed number of oxygen candles, and collects the temperature of the electrolyte in the electrolyte box through a temperature transmitter arranged at the bottom of the electrolyte box; if the temperature of the electrolyte is lower than the electrolyte heating target temperature value T1, the microprocessor controls the electromagnetic valve to act, the electromagnetic valve adsorbs the iron block and the compression spring through magnetic force, so that the bottom surface of the heat conducting plate is in contact with the upper surface of the electrolyte tank, and the electrolyte tank is heated through heat released in the oxygen production process of the oxygen candle; when the metal-air battery works, the microprocessor also acquires the real-time ambient oxygen concentration through the oxygen concentration sensor arranged outside the galvanic pile box, and controls the number of oxygen candle triggers according to the relation between the real-time ambient oxygen concentration and the ambient oxygen concentration target value C1.
7. The method of claim 6, wherein the step of heating the electrolyte comprises: the method for controlling the number of oxygen candle triggers by the microprocessor according to the relation between the real-time ambient oxygen concentration and the ambient oxygen concentration target value C1 comprises the following steps:
measuring the oxygen release rate of a single oxygen candle during working and the ambient oxygen concentration of the metal-air battery during normal working by using a test method, defining the ambient oxygen concentration of the metal-air battery during normal working as an ambient oxygen concentration target value C1, and calculating a relation curve between the number of triggered oxygen candles and the ambient oxygen concentration; when the metal-air battery works, the microprocessor triggers the oxygen candles with a fixed quantity, and in the working process of the metal-air battery, the microprocessor collects a real-time environment oxygen concentration value through an oxygen concentration sensor arranged outside the electric pile box, and when the real-time environment oxygen concentration value is smaller than an environment oxygen concentration target value C1, the microprocessor increases the number of oxygen candle triggers according to a relation curve of the number of oxygen candle triggers and the environment oxygen concentration.
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| CN114050292A (en) * | 2021-11-10 | 2022-02-15 | 郑州佛光发电设备有限公司 | Automatic heating system and method for aluminum-air battery electrolyte |
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Address after: 450001 No.50 Dongqing street, high tech Development Zone, Zhengzhou City, Henan Province Patentee after: Zhengzhou Foguang power generation equipment Co.,Ltd. Patentee after: Beijing Century Kanghua Electric Technology Co., Ltd Address before: 450001 No.50 Dongqing street, high tech Development Zone, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU FOGUANG POWER GENERATION EQUIPMENT Co.,Ltd. Patentee before: Beijing Century Kanghua Electric Technology Co., Ltd |