CN107907242A - A kind of high voltage bus tie point passive contact-free temperature measuring equipment - Google Patents
A kind of high voltage bus tie point passive contact-free temperature measuring equipment Download PDFInfo
- Publication number
- CN107907242A CN107907242A CN201711008590.2A CN201711008590A CN107907242A CN 107907242 A CN107907242 A CN 107907242A CN 201711008590 A CN201711008590 A CN 201711008590A CN 107907242 A CN107907242 A CN 107907242A
- Authority
- CN
- China
- Prior art keywords
- module
- electric energy
- microprocessor
- voltage
- rectifying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of high voltage bus tie point passive contact-free temperature measuring equipment, wherein, passive component includes electric energy receiving coil, the first rectifying and voltage-stabilizing module, temperature sensor, first microprocessor and data wireless sending module；Active parts includes voltage reduction module, the second rectifying and voltage-stabilizing module, the second microprocessor, communication module, data wireless reception module, rectification module, high-frequency inversion module and electric energy transmit coil.During work, electric energy receiving coil receives the electric energy power supply of active parts transmission, and the temperature and default id information that first microprocessor is measured temperature sensor by data wireless sending module are sent to active parts；Second microprocessor controls high-frequency inversion module to input current-modulation to electric energy transmit coil into high-frequency alternating current, and communication control module exports the temperature received and id information.The present invention realizes separation and its non-contact acquisition of electric energy in temperature-measuring part structure, has larger application value.
Description
Technical field
The present invention relates to electronic measuring technology field, more particularly to a kind of high voltage bus tie point passive contact-free thermometric
Device.
Background technology
With the continuous development of intelligent power grid technology, more and more high voltage switchyards need comprehensive monitoring and control
System.Whether the wherein armature contact of high voltage bus tie point and high-voltage circuitbreaker contact well closes Operation of Electric Systems very much
Key.Since the change of contact resistance will cause the change of contact temperature, connect in engineering frequently by measurement high voltage bus
Whether the temperature of the armature contact of contact and high-voltage circuitbreaker is good to judge contact.Since tie point and contact are in high voltage
Side, takes electric difficulty, the measurement of its temperature, currently known measuring method is by infrared non-cpntact measurement and thermometric end charged pool
Measuring method.The also useful surface acoustic wave thermometric of state-of-the-art technology.Since environment is complicated in switchgear, infrared measurement of temperature is vulnerable to environment
The interference of temperature causes thermometric to be not allowed.The temp measuring method of thermometric end charged pool can accurate measurement temperature, but due to need and
Shi Genghuan batteries, difficulty is brought for system long term monitoring and maintenance.Surface acoustic wave thermometry is a kind of contactless temperature-measuring side
Formula, but since technology is not yet ripe, its integrity problem does not solve at all.
The content of the invention
The technical problems to be solved by the invention are to be directed to the defects of involved in background technology, there is provided a kind of high pressure is female
Line connection point passive contact-free temperature measuring equipment.
The present invention uses following technical scheme to solve above-mentioned technical problem：
A kind of high voltage bus tie point passive contact-free temperature measuring equipment, includes passive component and active parts；
The passive component includes electric energy receiving coil, the first rectifying and voltage-stabilizing module, temperature sensor, first microprocessor sum number
According to wireless sending module；
The electric energy receiving coil is used to receive the electric energy of active parts transmission and outputs this to the first rectifying and voltage-stabilizing mould
Block；
The first rectifying and voltage-stabilizing module be used to docking received electric energy supply electricity to respectively after rectifying and voltage-stabilizing temperature sensor,
First microprocessor, data wireless sending module；
The temperature sensor is used to sense the temperature at its place, and passes it to the first microprocessor；
The first microprocessor is used to control the data wireless sending module by the temperature received and set in advance
Id information passes to the active parts；
The active parts includes voltage reduction module, the second rectifying and voltage-stabilizing module, the second microprocessor, communication module, data are wireless
Receiving module, rectification module, high-frequency inversion module and electric energy transmit coil；
The voltage reduction module is used to after alternating current is depressured export respectively to the second rectifying and voltage-stabilizing module, rectification module；
The second rectifying and voltage-stabilizing module is used to supply electricity to the second microprocessor respectively after carrying out rectifying and voltage-stabilizing to the alternating current after decompression
Device, communication module, data wireless reception module；
The rectification module is used to pass to the high-frequency inversion module after carrying out rectification to the alternating current after decompression；
The data wireless reception module is used for the temperature and id information for receiving the passive component transmission, and passes it to institute
State the second microprocessor；
Second microprocessor is used to control the high-frequency inversion module by the current-modulation after rectification module rectification into high frequency
Alternating current is inputted to electric energy transmit coil, and communication control module exports the temperature received and id information；
The electric energy transmit coil is used to send electric energy to the electric energy receiving coil.
It is described as a kind of further prioritization scheme of high voltage bus tie point passive contact-free temperature measuring equipment of the invention
First microprocessor, the second microprocessor use MSP430 microcontrollers.
It is shown as a kind of further prioritization scheme of high voltage bus tie point passive contact-free temperature measuring equipment of the invention
Data wireless sending module, data wireless reception module use nRF905 wireless communication modules.
The present invention compared with prior art, has following technique effect using above technical scheme：
1. the non-contact power and data wireless transmission of passive temperature-measuring part are realized, on active parts and passive component structure
Separation, so as to can not only solve the problems, such as the acquisition of power supply during the thermometric of high-pressure side, but also can isolate high pressure；
2. thermometric end is directly worked by induced potential without battery, improves the stability and practicality of system, be suitable for
The measurement of high voltage bus tie point temperature and the measurement of breaker contact point temperature.
Brief description of the drawings
Fig. 1 is the principle of the present invention schematic diagram；
Fig. 2 is the workflow schematic diagram of passive component in the present invention；
Fig. 3 is the workflow schematic diagram of active parts in the present invention；
Fig. 4 is the circuit theory schematic diagram of medium-high frequency inverter module of the present invention；
Fig. 5 is the principle schematic of the first rectifying and voltage-stabilizing module in the present invention.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with brief description of the drawings, but the present embodiment is not used to limit
The system present invention, every similar structure using the present invention and its similar change, should all be included in protection scope of the present invention.
As shown in Figure 1, the invention discloses a kind of high voltage bus tie point passive contact-free temperature measuring equipment, comprising passive
Component and active parts；
The passive component includes electric energy receiving coil, the first rectifying and voltage-stabilizing module, temperature sensor, first microprocessor sum number
According to wireless sending module；
The electric energy receiving coil is used to receive the electric energy of active parts transmission and outputs this to the first rectifying and voltage-stabilizing mould
Block；
The first rectifying and voltage-stabilizing module be used to docking received electric energy supply electricity to respectively after rectifying and voltage-stabilizing temperature sensor,
First microprocessor, data wireless sending module；
The temperature sensor is used to sense the temperature at its place, and passes it to the first microprocessor；
The first microprocessor is used to control the data wireless sending module by the temperature received and set in advance
Id information passes to the active parts；
The active parts includes voltage reduction module, the second rectifying and voltage-stabilizing module, the second microprocessor, communication module, data are wireless
Receiving module, rectification module, high-frequency inversion module and electric energy transmit coil；
The voltage reduction module is used to after alternating current is depressured export respectively to the second rectifying and voltage-stabilizing module, rectification module；
The second rectifying and voltage-stabilizing module is used to supply electricity to the second microprocessor respectively after carrying out rectifying and voltage-stabilizing to the alternating current after decompression
Device, communication module, data wireless reception module；
The rectification module is used to pass to the high-frequency inversion module after carrying out rectification to the alternating current after decompression；
The data wireless reception module is used for the temperature and id information for receiving the passive component transmission, and passes it to institute
State the second microprocessor；
Second microprocessor is used to control the high-frequency inversion module by the current-modulation after rectification module rectification into high frequency
Alternating current is inputted to electric energy transmit coil, and communication control module exports the temperature received and id information；
The electric energy transmit coil is used to send electric energy to the electric energy receiving coil.
Alternating current first passes through voltage reduction module decompression into 24V alternating currents, and rectified module becomes alternating current to 24V AC powers all the way
Change direct current into, then by high-frequency inversion module, the high-frequency alternating current of DC power conversion into 125KHz or 250KHz are sent into
Electric energy transmit coil, its frequency are controlled by the second microprocessor.24V alternating currents another way gives second through the second rectifying and voltage-stabilizing module
Microprocessor, communication module, data wireless reception module power supply.Data wireless reception module receives the temperature of passive component transmission
Degree and id information, are sent into the second microprocessor and are handled and buffered, and are believed by the temperature and ID of communication module output measurement
Breath.
Electric energy receiving coil senses the changes of magnetic field of electric energy transmitting coil transmitting, and electricity is sensed in electric energy receiving coil
Kinetic potential, rectified unit rectification, charge pump boosting, conversion form burning voltage, are temperature sensor, first microprocessor and number
Power according to wireless sending module.
In the embodiment of the present invention, the first microprocessor, the second microprocessor use MSP430 microcontrollers, data without
Line sending module, data wireless reception module use nRF905 wireless communication modules.
In fig. 2, the second microprocessor MSP430 clocks are first set as auxiliary clock, by MSP430 microcontrollers to I/O
Port, Interruption, nRF905 are initialized, and it is low-power consumption mode then to set MSP430, waits Interruption to arrive, in response
Disconnected program, opens A/D conversions, by the temperature of temperature sensor measurement busbar tie point, and by test result, set in advance
Id information and CRC data check bit carry out TEA encryptions again, and signal receiving unit is sent to finally by antenna, after being sent completely,
NRF905 enters standby mode, waits Interruption.
In figure 3, high-frequency inversion module is controlled successively to first microprocessor MSP430 single-chip processor i/os port first
SPWM signal outputs, communications setting and nRF905 pair with host computer initialize, and then wait for temperature data reception, number
According to first carrying out TEA decryption after receiving and carry out CRC data verification, data are sent to host computer by bus after verification is errorless.
In Fig. 4, high-frequency inversion module is by 4 MOSFET（Q1, Q2, Q3, Q4）The full bridge inverter of composition, 4
MOSFET is driven by two panels IR2110, and Micro-processor MCV 1 produces two-way SPWM ripples, two panels IR2110 is given respectively, so as to control
The break-make of 4 MOSFET, produces 125KHz or 250KHz high-frequency alternating currents, is sent into L1 coils by isolating transformer T1 and sends out
Send.
In Figure 5, after electric energy receiving coil L2 coils obtain electric energy, by D7, D8, D99, the full-bridge of D10 diodes composition
Rectification circuit switchs to direct current, and the standard output VCC1 that voltage stabilization is 3.3V is consumption by booster XC9801 after capacitance C8 filtering
Can unit offer electric energy.
Those skilled in the art of the present technique are it is understood that unless otherwise defined, all terms used herein（Including skill
Art term and scientific terminology）With the identical meaning of the general understanding with the those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that with the context of the prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with the implication of idealization or overly formal.
Above-described embodiment, has carried out the purpose of the present invention, technical solution and beneficial effect further
Describe in detail, it should be understood that the foregoing is merely the embodiment of the present invention, be not limited to this hair
Bright, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done, should be included in the present invention
Protection domain within.
Claims (3)
1. a kind of high voltage bus tie point passive contact-free temperature measuring equipment, it is characterised in that include passive component and active portion
Part；
The passive component includes electric energy receiving coil, the first rectifying and voltage-stabilizing module, temperature sensor, first microprocessor sum number
According to wireless sending module；
The electric energy receiving coil is used to receive the electric energy of active parts transmission and outputs this to the first rectifying and voltage-stabilizing mould
Block；
The first rectifying and voltage-stabilizing module be used to docking received electric energy supply electricity to respectively after rectifying and voltage-stabilizing temperature sensor,
First microprocessor, data wireless sending module；
The temperature sensor is used to sense the temperature at its place, and passes it to the first microprocessor；
The first microprocessor is used to control the data wireless sending module by the temperature received and set in advance
Id information passes to the active parts；
The active parts includes voltage reduction module, the second rectifying and voltage-stabilizing module, the second microprocessor, communication module, data are wireless
Receiving module, rectification module, high-frequency inversion module and electric energy transmit coil；
The voltage reduction module is used to after alternating current is depressured export respectively to the second rectifying and voltage-stabilizing module, rectification module；
The second rectifying and voltage-stabilizing module is used to supply electricity to the second microprocessor respectively after carrying out rectifying and voltage-stabilizing to the alternating current after decompression
Device, communication module, data wireless reception module；
The rectification module is used to pass to the high-frequency inversion module after carrying out rectification to the alternating current after decompression；
The data wireless reception module is used for the temperature and id information for receiving the passive component transmission, and passes it to institute
State the second microprocessor；
Second microprocessor is used to control the high-frequency inversion module by the current-modulation after rectification module rectification into high frequency
Alternating current is inputted to electric energy transmit coil, and communication control module exports the temperature received and id information；
The electric energy transmit coil is used to send electric energy to the electric energy receiving coil.
2. high voltage bus tie point passive contact-free temperature measuring equipment as claimed in claim 1, it is characterised in that described first
Microprocessor, the second microprocessor use MSP430 microcontrollers.
3. high voltage bus tie point passive contact-free temperature measuring equipment as claimed in claim 1, it is characterised in that shown data
Wireless sending module, data wireless reception module use nRF905 wireless communication modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008590.2A CN107907242A (en) | 2017-10-25 | 2017-10-25 | A kind of high voltage bus tie point passive contact-free temperature measuring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008590.2A CN107907242A (en) | 2017-10-25 | 2017-10-25 | A kind of high voltage bus tie point passive contact-free temperature measuring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107907242A true CN107907242A (en) | 2018-04-13 |
Family
ID=61841791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711008590.2A Pending CN107907242A (en) | 2017-10-25 | 2017-10-25 | A kind of high voltage bus tie point passive contact-free temperature measuring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107907242A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711952A (en) * | 2018-05-23 | 2018-10-26 | 上海工程技术大学 | The passive cutting magnetic induction line electricity getting device of contactless electromagnetic type and method |
| CN110793668A (en) * | 2019-10-30 | 2020-02-14 | 云南恒协科技有限公司 | Resonance magnetic coupling induction electricity-taking self-powered wireless temperature measurement system |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201237537Y (en) * | 2008-07-25 | 2009-05-13 | 河南索凌电气有限公司 | Temperature sensor |
| CN102305667A (en) * | 2010-03-19 | 2012-01-04 | 李春茂 | Device for monitoring temperature of outdoor high-voltage switch through bus and implementation method of device |
| CN102410884A (en) * | 2011-10-08 | 2012-04-11 | 哈尔滨恒誉名翔科技有限公司 | Automatic granary temperature and humidity testing and alarm system |
| CN102680123A (en) * | 2012-05-30 | 2012-09-19 | 西安交通大学 | System and method for on-line monitoring temperature and stress of retainer |
| CN202661191U (en) * | 2012-04-20 | 2013-01-09 | 东北电力大学 | Wireless temperature measurement sensor for contacts of high voltage disconnecting switch |
| CN102928099A (en) * | 2011-08-11 | 2013-02-13 | 常州帕斯菲克自动化技术有限公司 | Wireless temperature measuring device for contact of high-voltage switch |
| CN203241172U (en) * | 2013-02-08 | 2013-10-16 | 北京妙王电力设备有限公司 | A wireless temperature measuring apparatus used in high-voltage cabinets |
| CN203455028U (en) * | 2013-09-23 | 2014-02-26 | 杭州休普电子技术有限公司 | A passive wireless temperature-measuring and current-measuring system |
| CN103904784A (en) * | 2014-03-31 | 2014-07-02 | 南京信息工程大学 | Electric energy wireless wall-penetrating transmission device |
| CN203774882U (en) * | 2014-03-31 | 2014-08-13 | 南京信息工程大学 | Wireless power wall-passing transmission device |
| CN104848950A (en) * | 2014-11-19 | 2015-08-19 | 青岛同创节能环保工程有限公司 | Passive outdoor temperature sensor |
| CN104848949A (en) * | 2014-11-19 | 2015-08-19 | 青岛同创节能环保工程有限公司 | Wireless temperature detector |
| CN105181168A (en) * | 2015-08-14 | 2015-12-23 | 泰州斯贝勒电气科技有限公司 | Wireless temperature sensor |
| CN205070621U (en) * | 2015-10-14 | 2016-03-02 | 曹金鑫 | Wireless power supply system of 110kV transmission line video monitoring device |
| CN205483278U (en) * | 2016-03-17 | 2016-08-17 | 北京斯拓高科电气有限公司 | Wireless temperature measurement system based on passive CT asks for |
| CN205583793U (en) * | 2016-01-04 | 2016-09-14 | 南京铁道职业技术学院 | Wireless microphone's wireless charging device |
| CN205920374U (en) * | 2016-07-27 | 2017-02-01 | 牧原食品股份有限公司 | Pig farm is with automatic disease supervisory equipment |
| CN106849299A (en) * | 2017-03-17 | 2017-06-13 | 山东大学 | The variable magnetic coupling resonant radio energy transmitting device of resonance compensation topology and method |
| CN206389184U (en) * | 2017-01-27 | 2017-08-08 | 厦门越一电子科技有限公司 | It is a kind of that there is wireless charging, the intelligent water boiling device of electric power system |
-
2017
- 2017-10-25 CN CN201711008590.2A patent/CN107907242A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201237537Y (en) * | 2008-07-25 | 2009-05-13 | 河南索凌电气有限公司 | Temperature sensor |
| CN102305667A (en) * | 2010-03-19 | 2012-01-04 | 李春茂 | Device for monitoring temperature of outdoor high-voltage switch through bus and implementation method of device |
| CN102928099A (en) * | 2011-08-11 | 2013-02-13 | 常州帕斯菲克自动化技术有限公司 | Wireless temperature measuring device for contact of high-voltage switch |
| CN102410884A (en) * | 2011-10-08 | 2012-04-11 | 哈尔滨恒誉名翔科技有限公司 | Automatic granary temperature and humidity testing and alarm system |
| CN202661191U (en) * | 2012-04-20 | 2013-01-09 | 东北电力大学 | Wireless temperature measurement sensor for contacts of high voltage disconnecting switch |
| CN102680123A (en) * | 2012-05-30 | 2012-09-19 | 西安交通大学 | System and method for on-line monitoring temperature and stress of retainer |
| CN203241172U (en) * | 2013-02-08 | 2013-10-16 | 北京妙王电力设备有限公司 | A wireless temperature measuring apparatus used in high-voltage cabinets |
| CN203455028U (en) * | 2013-09-23 | 2014-02-26 | 杭州休普电子技术有限公司 | A passive wireless temperature-measuring and current-measuring system |
| CN103904784A (en) * | 2014-03-31 | 2014-07-02 | 南京信息工程大学 | Electric energy wireless wall-penetrating transmission device |
| CN203774882U (en) * | 2014-03-31 | 2014-08-13 | 南京信息工程大学 | Wireless power wall-passing transmission device |
| CN104848950A (en) * | 2014-11-19 | 2015-08-19 | 青岛同创节能环保工程有限公司 | Passive outdoor temperature sensor |
| CN104848949A (en) * | 2014-11-19 | 2015-08-19 | 青岛同创节能环保工程有限公司 | Wireless temperature detector |
| CN105181168A (en) * | 2015-08-14 | 2015-12-23 | 泰州斯贝勒电气科技有限公司 | Wireless temperature sensor |
| CN205070621U (en) * | 2015-10-14 | 2016-03-02 | 曹金鑫 | Wireless power supply system of 110kV transmission line video monitoring device |
| CN205583793U (en) * | 2016-01-04 | 2016-09-14 | 南京铁道职业技术学院 | Wireless microphone's wireless charging device |
| CN205483278U (en) * | 2016-03-17 | 2016-08-17 | 北京斯拓高科电气有限公司 | Wireless temperature measurement system based on passive CT asks for |
| CN205920374U (en) * | 2016-07-27 | 2017-02-01 | 牧原食品股份有限公司 | Pig farm is with automatic disease supervisory equipment |
| CN206389184U (en) * | 2017-01-27 | 2017-08-08 | 厦门越一电子科技有限公司 | It is a kind of that there is wireless charging, the intelligent water boiling device of electric power system |
| CN106849299A (en) * | 2017-03-17 | 2017-06-13 | 山东大学 | The variable magnetic coupling resonant radio energy transmitting device of resonance compensation topology and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711952A (en) * | 2018-05-23 | 2018-10-26 | 上海工程技术大学 | The passive cutting magnetic induction line electricity getting device of contactless electromagnetic type and method |
| CN108711952B (en) * | 2018-05-23 | 2022-07-15 | 上海工程技术大学 | Non-contact electromagnetic type passive cutting magnetic induction line electricity taking device and method |
| CN110793668A (en) * | 2019-10-30 | 2020-02-14 | 云南恒协科技有限公司 | Resonance magnetic coupling induction electricity-taking self-powered wireless temperature measurement system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102157987B (en) | A kind of contactless high-power energy transmission system and application | |
| CN102355035B (en) | Wireless charging transmitting device, wireless charging system and wireless charging control method | |
| CN102545354B (en) | Wireless charging device of small-sized electronic equipment | |
| CN104333122B (en) | Power bus circuit | |
| CN105305660B (en) | A kind of non-contact charge open-circuit protecting device | |
| CN105322665A (en) | Resonant wireless power supply system for high-voltage power transmission line | |
| CN104124769B (en) | Wireless power supply source control system and method | |
| CN108258780A (en) | A kind of ultra-high-tension power transmission line electrical equipment wireless power supply system | |
| CN105071551B (en) | A kind of wireless energy transform device | |
| CN103701309A (en) | Alternating-direct current power supply system for variable frequency equipment and variable frequency air conditioner | |
| CN202405844U (en) | Wireless charging device for small electronic equipment | |
| CN108683270B (en) | Wireless charging system | |
| CN104617646A (en) | Intelligent wireless charging device based on ZVS self-exciting resonance | |
| CN107907242A (en) | A kind of high voltage bus tie point passive contact-free temperature measuring equipment | |
| CN204633480U (en) | A kind of wireless power transmission transmitting terminal circuit of multiple-frequency operation | |
| CN105846499B (en) | A kind of wireless charging device and wireless charging system | |
| WO2023185964A1 (en) | Battery system and temperature control method for battery system | |
| CN202119563U (en) | High-voltage point temperature measuring device based on wireless power supply | |
| CN106933118A (en) | A kind of remote power supply managing device based on 4G networks | |
| CN202712946U (en) | UPS charging module device | |
| CN108011398A (en) | A kind of frequency convertor system of the controllable access of distributed generation resource | |
| CN204741426U (en) | Novel steady voltage and protection circuit | |
| CN208867878U (en) | A kind of battery management system based on bq77910 controller new-energy automobile | |
| CN207705803U (en) | A kind of energy-saving inversion boosting complexes for photovoltaic generation | |
| CN203313064U (en) | High-frequency switching power supply module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180413 |
|
| RJ01 | Rejection of invention patent application after publication |