CN108683232A - A kind of DC decompression electric discharge of adjustable battery pack cascaded structure and single-phase inversion charge/discharge control circuit and its control method - Google Patents
A kind of DC decompression electric discharge of adjustable battery pack cascaded structure and single-phase inversion charge/discharge control circuit and its control method Download PDFInfo
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- CN108683232A CN108683232A CN201810588677.XA CN201810588677A CN108683232A CN 108683232 A CN108683232 A CN 108683232A CN 201810588677 A CN201810588677 A CN 201810588677A CN 108683232 A CN108683232 A CN 108683232A
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- 230000006837 decompression Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 19
- 238000001816 cooling Methods 0.000 claims description 65
- 230000005669 field effect Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 210000004027 cell Anatomy 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 208000032953 Device battery issue Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010068052 Mosaicism Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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
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- 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)
Abstract
Present invention is disclosed a kind of electric discharge of the DC decompression of adjustable battery pack cascaded structure and single-phase inversion charge/discharge control circuits, the circuit design can carry out control of discharge by controlling the guiding path of electric current to each single battery (or single battery group), by single battery (or the single battery group) number for controlling output electric discharge, realize that discharge voltage direct current is adjustable, or single-phase inversion electric discharge is realized in dynamic adjustment.The circuit design can realize active equalization ability identical with discharge current size.By dynamic control, each single battery (or single battery group) in battery pack, which can reach, to be substantially discharged.
Description
Technical field
The present invention relates to field of batteries.
Background technology
New energy technology is fast-developing, especially lithium battery the fields such as standby energy storage and electric vehicle extensive use,
Requirements at the higher level are proposed to crucial battery energy storage and battery management technique, need to promote the validity to battery power discharge and equilibrium
Ability makes the energy storage characteristic of battery pack perform to most preferably.
In the application of battery pack, except battery management system also needs to increase inverter circuit just achievable inversion electric discharge.System structure
Frame is complicated, and hardware cost is high.
Battery pack packet technology has high requirement to the consistency of single battery, otherwise because of the serious shadow of battery consistency problem
Ring the performance of battery pack overall performance.But it is limited by battery technology, needs to solve battery one by better battery management technique
Sex chromosome mosaicism is caused, coherence request of the battery pack packet to single battery is reduced.
There is the problems such as efficiency is low, and practical application effect is undesirable with active equalization technology in current passive equilibrium.It is special
It is not active equalization technology, including capacitance degree of flying method, voltage transformation approach, circuit is extremely complex, hardware volume is big, application cost is high
The defects of.It needs better battery management technique and promotes application level.
The performance of entire battery pack is limited by single battery failure or the influence of quality problems.Need better cell tube
Reason technology improves reliability and the safety of battery applications.
Invention content
The technical problem to be solved by the present invention is to realize a kind of DC decompression electric discharge of adjustable battery pack cascaded structure
With single-phase inversion charge/discharge control circuit.
To achieve the goals above, the technical solution adopted by the present invention is：A kind of adjustable battery pack cascaded structure it is straight
Stream step-down discharge and single-phase inversion charge/discharge control circuit, battery pack are interconnected to constitute by battery unit, each battery list
The anode connection cathode output end of member, cathode connect cathode output end, and the cathode output end of adjacent cell connects adjacent electricity
The cathode output end of pool unit constitutes concatenated battery pack, the cathode output end and cathode output end of each battery unit it
Between connected by second switch element, the cathode output end and battery unit anode or cathode output end and battery unit are negative
It is equipped with first switching element between pole, is located at cathode output end and the cathode output of the battery unit of battery pack head and the tail position
The power supply interface as battery pack, circuit is held to be equipped with controller, the power supply interface is equipped with communication connection port, the controller
It is connected by the control unit of communication connection port and power device, the controller output drive signal to PWM modulator, institute
PWM modulator output drive signal is stated to each first switching element and second switch element.
The first switching element and second switch element are field-effect tube.
The power supply interface is equipped with supply voltage collecting unit, and the supply voltage collecting unit outputs voltage signal to electricity
Pond administrative unit.
Each battery unit, which coils, water cooling pipeline, and each water cooling tube road is all provided with there are one cooling solenoid valve,
The both ends of each cooling line are linked on cooling branch pipe, two connect with each cooling line on the cooling branch pipe
It is all provided between communicating position there are one branch pipe solenoid valve, the both ends of the cooling branch pipe are linked on cooling supervisor, the cooling
It is all provided between two communicating positions being connect with each cooling branch pipe on supervisor there are one solenoid valve is responsible for, the cooling is responsible for two
End connection cooling water tank, and cooling supervisor wherein one end is equipped with cooling pump, controller outputs control signals to cooling controller, institute
State cooling controller through cooling control unit output drive signal to cooling solenoid valve, branch pipe solenoid valve, supervisor's solenoid valve and
Cooling pump.
Each battery unit is all provided with that there are one the temperature sensor for acquiring the battery cell temperature, the temperature sensing
Device output temperature signal is to controller.
Control method based on the charge/discharge control circuit：
Before power supply, the first switching element open circuit of the battery unit, second switch element run, all battery lists are kept
Member keeps bypass state；
Controller obtains control unit and sends out power demands signal in real time, and the power demands include voltage requirements and pattern
Demand；
Controller is tabled look-up according to voltage requirements obtains the destination number for the battery unit for needing to be transferred to power supply state；
Controller carries out the battery unit execution direct-current discharge of control targe quantity according to mode requirement or single-phase inversion is put
Electricity；
Direct-current discharge：By by the planned battery unit for being transferred to power supply state first switching element access, second
Switch element open circuit, makes the battery unit for being currently transferred to power supply state reach destination number；
Single-phase inversion discharges：Control is transferred to the battery unit of power supply state with identical Frequency Synchronization circulate operation：First
The second switch element open circuit simultaneously of switch element access, later second switch element run first switching element open circuit simultaneously.
During battery-powered, after battery management unit obtains target voltage signal in real time, if target voltage signal is sent out
Changing then tables look-up according to voltage requirements and obtains the destination number for the battery unit for needing to be transferred to power supply state, execute tune later
The quantity of the battery unit of whole operation increase and decrease power supply state.
During battery-powered, battery management unit obtains the output voltage of power supply interface in real time, if power supply interface
Output voltage is more than setting safety value with target voltage difference, then adjusts the destination number of battery unit, the output of power supply interface
Voltage is excessive, reduces the destination number of battery unit, and the output voltage of power supply interface is too small, increases the number of targets of battery unit
Amount.
If the Current Temperatures of some battery unit are more than temperature upper limit, start cooling pump；
After starting cooling pump, branch pipe valve and supervisor's valve maintain a normally open, and coolant valve keeps normally closed, it is current some or
Multiple temperature are more than the battery unit of temperature upper limit, then the cooling electromagnetism being opened on the cooling line of above-mentioned battery unit cooling
Valve, the branch pipe solenoid valve being closed between above-mentioned cooling line both ends, the supervisor's electricity being closed between above-mentioned cooling branch pipe both ends
Magnet valve.
After starting cooling pump, when the temperature of some or multiple battery units is by being more than at a temperature of temperature upper limit is reduced to
Limit, then the cooling solenoid valve being closed on the battery unit cooling line open the branch pipe solenoid valve between the cooling line both ends,
After all branch pipe solenoid valves are opened on cooling branch pipe, then supervisor's solenoid valve between the cooling branch pipe both ends is opened.
The present invention is DC decompression electric discharge and the single-phase inversion charge/discharge control circuit of a kind of adjustable battery pack cascaded structure.
The circuit design can carry out control of discharge by controlling the guiding path of electric current to each single battery (or single battery group), lead to
Single battery (or the single battery group) number for crossing control output electric discharge realizes that discharge voltage direct current is adjustable, or dynamically adjusts real
Existing single-phase inversion electric discharge.The circuit design can realize active equalization ability identical with discharge current size.By dynamic control,
Each single battery (or single battery group) in battery pack, which can reach, to be substantially discharged.
Compared with prior art, the beneficial effects of the invention are as follows：
Tandem compound can be added in single battery (or single battery group), can also bypass out tandem compound completely.It can control
Discharge current processed is with or without arbitrary single battery (or single battery group), you can reaches euqalizing current and is equal to discharge current
High efficiency it is balanced.
Single battery (or single battery group) number of output electric discharge is added by controlling, realizes discharge voltage DC decompression
It is adjustable.Or single-phase inversion electric discharge is realized in dynamic adjustment, cancels additional inverter module.
On the basis of battery strings number needed for nominal discharge voltage, increase a section or more piece single battery (or single battery
Group) as balanced redundancy.When can accomplish to bypass into single battery (or single battery group) of discharge prevention or active equalization,
Battery power discharge voltage is normal.Each single battery (or single battery group), which can reach, to be substantially discharged, and the storage of battery pack is made
Energy characteristic performs to most preferably, and independent of the coherence request to single battery.
Two groups of field-effect tube, relay or other switching device conducts is used only in each single battery (or single battery group)
Turn-on and turn-off control, you can realization seals in or Bypass Control, simple circuit, and control is simple, of low cost.
Failure or quality problems especially are occurred to single battery, can bypass outside tandem compound completely, battery pack is provided and is answered
Reliability and safety.
Description of the drawings
The content of every width attached drawing expression in description of the invention is briefly described below：
Fig. 1 is DC decompression electric discharge schematic diagram
Fig. 2 is single-phase inversion electric discharge schematic diagram；
Fig. 3 is cooling line schematic diagram.
Specific implementation mode
The technical solution adopted in the present invention is that change is existing directly by single battery (or single battery group) tandem compound
At battery pack, but break-make control is carried out by field-effect tube, relay or other switching devices, by single battery (or monomer
Battery pack) busbar is sealed in, battery voltage is obtained by busbar.Also can by field-effect tube, relay or other switching devices into
Row break-make controls, and by this grade of busbar conducting connection, single battery (or single battery group) bypasses out tandem compound, obstructed overdischarge
Electric current.By controlling single battery (or single battery group) number of output electric discharge, realization discharge voltage DC decompression is adjustable, or
Single-phase inversion electric discharge is realized in dynamic adjustment.
Each single battery (or single battery group) in battery pack passes through field-effect tube, relay or other switching devices
Break-make control is carried out, realizes and single battery (or single battery group) is sealed in into busbar, or by single battery (or single battery group)
Bypass out tandem compound.Single battery (or single battery group) number of output electric discharge is added by controlling, realizes discharge voltage
DC decompression is adjustable, or single-phase inversion electric discharge is realized in dynamic adjustment.
The cathode of single battery (or single battery group) is directly connected with series bus, positive then (first opens by Sx_1
Close element) switch connection series bus.Sx_1 switch conductions, Sx_2 (second switch element) switches disconnect, then this grade of monomer electricity
Pond (or single battery group) seals in busbar, participates in electric discharge.Sx_1 switches disconnect, Sx_2 switch conductions, then this grade of single battery (or
Single battery group) tandem compound is bypassed out, without electric discharge.
Specifically, single battery (or single battery group) cathode is directly connected with series bus, and anode is not connected directly
Battery pack is formed, but break-make control is carried out by field-effect tube, relay or other switching devices, single battery is (or single
Body battery pack) seal in busbar.
Single battery (or single battery group) can carry out break-make control by field-effect tube, relay or other switching devices
System, by this grade of busbar conducting connection, single battery (or single battery group) then bypasses out tandem compound.
Break-make control is carried out by field-effect tube, relay or other switching devices, changes and seals in busbar participation electric discharge
Single battery (or single battery group) number, and bypass out single battery (or single battery group) number of tandem compound, you can
Change busbar voltage, realize that discharge voltage DC decompression is adjustable, or single-phase inversion electric discharge is realized in dynamic adjustment.
Discharge process is according to the voltage and status information of each single battery (or single battery group), normal single battery
(or single battery group) can seal in busbar by field-effect tube, relay or other switching devices and carry out electric discharge connection.Abnormal
Single battery (or single battery group) can be connected this grade of busbar conducting by field-effect tube, relay or other switching devices,
This grade of cell bypass goes out tandem compound, obstructed overdischarge electric current.
Discharge process is according to the voltage and status information of each single battery (or single battery group), and real-time control adjustment is respectively
A single battery (or single battery group) seals in bus discharge or bypasses out tandem compound, realizes discharge prevention and active equalization.
By dynamic control, each single battery (or single battery group) in battery pack, which can reach, to be substantially discharged.
Discharge process is equal to discharge current to the euqalizing current of each single battery (or single battery group).
By the inventive technique, requirement of the battery pack packet to single battery consistency can be substantially reduced.
By the inventive technique, battery management circuit can realize that the DC decompression of discharge voltage is adjustable, pass through dynamic control
It can also be achieved single-phase inversion electric discharge.
By the inventive technique, each single battery (or single battery group) in battery pack can be realized discharge prevention and
Active equalization.Each single battery (or single battery group), which can reach, to be substantially discharged.
It, can there will be the single batteries of problem (or single battery group) thoroughly to exclude in tandem compound by the inventive technique
Outside, the use that battery pack will not be influenced because of the damage of individual monomers battery (or single battery group), greatly improves the safety of system
Property and reliability.
Normal DC control of discharge logic：
Sx_1 switch conductions, Sx_2 switches disconnect.All single batteries (or single battery group) access series bus, electric discharge
Electric current passes through all battery units in battery pack.Or single battery (or the single battery of output electric discharge can be added by controlling
Group) number, realize that discharge voltage DC decompression is adjustable.
Single-phase inversion control of discharge logic：
Sx_1 is switched and Sx_2 switches are by PWM combination controls, the single battery of dynamic adjustment output electric discharge (or monomer is electric
Pond group) number, so that the variation of output voltage is met the voltage and frequency requirement of single-phase inversion output.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.
Claims (10)
1. a kind of DC decompression electric discharge of adjustable battery pack cascaded structure and single-phase inversion charge/discharge control circuit, battery pack is by electricity
Pool unit is interconnected to constitute, and the anode connection cathode output end of each battery unit, cathode connects cathode output end, phase
The cathode output end of the cathode output end connection adjacent cell of adjacent battery unit constitutes concatenated battery pack, and feature exists
In：It is connected by second switch element between the cathode output end and cathode output end of each battery unit, the anode
It is equipped with first switching element between output end and battery unit anode or cathode output end and battery unit cathode, is located at described
Power supply interface of the cathode output end and cathode output end of the battery unit of battery pack head and the tail position as battery pack, circuit are equipped with
Controller, the power supply interface are equipped with communication connection port, the control that the controller passes through communication connection port and power device
Unit processed connection, the controller output drive signal to PWM modulator, the PWM modulator output drive signal is to each
First switching element and second switch element.
2. charge/discharge control circuit according to claim 1, it is characterised in that：The first switching element and second switch member
Part is field-effect tube.
3. charge/discharge control circuit according to claim 1 or 2, it is characterised in that：The power supply interface is equipped with supply voltage
Collecting unit, the supply voltage collecting unit output voltage signal to battery management unit.
4. charge/discharge control circuit according to claim 3, it is characterised in that：Each battery unit, which coils, water cooling tube
Road, each water cooling tube road are all provided with there are one cooling solenoid valve, and the both ends of each cooling line are linked into cooling branch
Guan Shang is all provided with there are one branch pipe solenoid valve between two communicating positions being connect with each cooling line on the cooling branch pipe,
The both ends of the cooling branch pipe are linked on cooling supervisor, upper two connections being connect with each cooling branch pipe of the cooling supervisor
It is all provided between position there are one solenoid valve is responsible for, the cooling supervisor both ends connect cooling water tank, and cooling supervisor wherein one end
Equipped with cooling pump, controller outputs control signals to cooling controller, and the cooling controller drives through cooling control unit output
Signal is moved to cooling solenoid valve, branch pipe solenoid valve, supervisor's solenoid valve and cooling pump.
5. charge/discharge control circuit according to claim 4, it is characterised in that：Each battery unit is adopted there are one being all provided with
Collect the temperature sensor of the battery cell temperature, the temperature sensor output temperature signal to controller.
6. the control method based on any charge/discharge control circuit in claim 1-5, it is characterised in that：
Before power supply, the first switching element open circuit of the battery unit, second switch element run, all battery units is kept to protect
Hold bypass state；
Controller obtains control unit and sends out power demands signal in real time, and the power demands, which include voltage requirements and pattern, to be needed
It asks；
Controller is tabled look-up according to voltage requirements obtains the destination number for the battery unit for needing to be transferred to power supply state；
The battery unit that controller carries out control targe quantity according to mode requirement executes direct-current discharge or single-phase inversion electric discharge；
Direct-current discharge：By by the planned battery unit for being transferred to power supply state first switching element access, second switch
Element open circuit, makes the battery unit for being currently transferred to power supply state reach destination number；
Single-phase inversion discharges：Control is transferred to the battery unit of power supply state with identical Frequency Synchronization circulate operation：First switch
Element run second switch element open circuit simultaneously, later second switch element run first switching element open circuit simultaneously.
7. control method according to claim 6, it is characterised in that：During battery-powered, battery management unit is real
When obtain target voltage signal after, if target voltage signal changes, need to be transferred to confession according to voltage requirements acquisition of tabling look-up
The destination number of the battery unit of electricity condition executes the quantity of the battery unit of adjustment operation increase and decrease power supply state later.
8. the control method described according to claim 6 or 7, it is characterised in that：During battery-powered, battery management unit
The output voltage of power supply interface is obtained in real time, if the output voltage of power supply interface is more than setting safety value with target voltage difference,
The destination number of battery unit is then adjusted, the output voltage of power supply interface is excessive, reduces the destination number of battery unit, power supply
The output voltage of interface is too small, increases the destination number of battery unit.
9. control method according to claim 8, it is characterised in that：If the Current Temperatures of some battery unit are more than temperature
The upper limit then starts cooling pump；
After starting cooling pump, branch pipe valve and supervisor's valve maintain a normally open, and coolant valve keeps normally closed, it is current some or it is multiple
Temperature is more than the battery unit of temperature upper limit, then the cooling solenoid valve being opened on the cooling line of above-mentioned battery unit cooling,
The branch pipe solenoid valve being closed between above-mentioned cooling line both ends, the supervisor's electromagnetism being closed between above-mentioned cooling branch pipe both ends
Valve.
10. control method according to claim 9, it is characterised in that：After starting cooling pump, when some or multiple batteries
The temperature of unit is by being more than that temperature upper limit is reduced to lowest temperature, then the cooling electromagnetism being closed on the battery unit cooling line
Valve opens the branch pipe solenoid valve between the cooling line both ends, after all branch pipe solenoid valves are opened on cooling branch pipe, then beats
Open supervisor's solenoid valve between the cooling branch pipe both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588677.XA CN108683232A (en) | 2018-06-08 | 2018-06-08 | A kind of DC decompression electric discharge of adjustable battery pack cascaded structure and single-phase inversion charge/discharge control circuit and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810588677.XA CN108683232A (en) | 2018-06-08 | 2018-06-08 | A kind of DC decompression electric discharge of adjustable battery pack cascaded structure and single-phase inversion charge/discharge control circuit and its control method |
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|---|---|
| CN108683232A true CN108683232A (en) | 2018-10-19 |
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| CN201810588677.XA Pending CN108683232A (en) | 2018-06-08 | 2018-06-08 | A kind of DC decompression electric discharge of adjustable battery pack cascaded structure and single-phase inversion charge/discharge control circuit and its control method |
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| CN111049252A (en) * | 2019-11-22 | 2020-04-21 | 国网浙江省电力有限公司嘉兴供电公司 | Standby power supply system of multi-station fusion data center |
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| CN111313499A (en) * | 2020-03-09 | 2020-06-19 | 上海度普新能源科技有限公司 | Battery over-discharge protection method and battery management system |
| CN111313499B (en) * | 2020-03-09 | 2021-06-25 | 上海度普新能源科技有限公司 | Battery over-discharge protection method and battery management system |
| CN117200404A (en) * | 2023-11-07 | 2023-12-08 | 浙江华宇钠电新能源科技有限公司 | Multi-switch switching circuit applied to sodium ion battery and vehicle based on multi-switch switching circuit |
| CN117200404B (en) * | 2023-11-07 | 2024-04-09 | 浙江华宇钠电新能源科技有限公司 | Multi-switch switching circuit applied to sodium ion battery and vehicle based on multi-switch switching circuit |
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