CN109193874A - A kind of battery pack balancing charge circuit and its charging method - Google Patents
A kind of battery pack balancing charge circuit and its charging method Download PDFInfo
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- CN109193874A CN109193874A CN201811338261.9A CN201811338261A CN109193874A CN 109193874 A CN109193874 A CN 109193874A CN 201811338261 A CN201811338261 A CN 201811338261A CN 109193874 A CN109193874 A CN 109193874A
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- 238000007600 charging Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 39
- 238000012544 monitoring process Methods 0.000 claims abstract description 36
- 239000004065 semiconductor Substances 0.000 claims description 103
- 230000005611 electricity Effects 0.000 claims description 19
- 238000010278 pulse charging Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 3
- 230000010365 information processing Effects 0.000 claims description 3
- 230000010287 polarization Effects 0.000 abstract description 7
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- 210000001367 artery Anatomy 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
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Classifications
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- H02J7/0021—
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- H02J7/0022—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention belongs to rechargeable battery technical fields, more particularly to a kind of battery pack balancing charge circuit and its charging method, disclose a kind of battery pack balancing charge circuit, the battery pack being composed in series including power end and several batteries, the power supply is connected with the battery pack, the both ends of the battery pack are electrically connected with load, it further include the control circuit for thering are several to match with the battery, the control circuit is in parallel with the battery, the control circuit includes analog switch module, message processing module and battery monitoring module form, the message processing module respectively with the analog switch module, the battery monitoring module electrical connection.Of the invention also discloses a kind of battery pack balancing charging method.The present invention charges to battery pack in such a way that preliminary filling point, constant-current charge and pulse charge be combined with each other, and quickly eliminates the polarization of battery during the charging process to reach, guarantees that each battery can be completely filled with, achieve the purpose that the equalizaing charge of battery.
Description
Technical field
The invention belongs to rechargeable battery technical fields, specifically, being related to a kind of battery pack balancing charge circuit and its filling
Method for electrically.
Background technique
With more more and more universal, especially a large amount of uses of intelligent movable equipment of smart machine, the capacity of battery with fill
Electric rate is increasingly by the attention of people.But the development of the charging technique of battery but changes less, on the one hand since battery exists
There are polarization in charging process, open-circuit voltage will lead to higher than virtual voltage, while reducing the maximum acceptable electricity of battery
Stream, and battery concentration polarization when reaching gassing threshold voltage can greatly enhance, thus need to limit the voltage of battery when charging,
Thus polarization can significantly slow battery charging rate, reduce charging capacity.On the other hand, due to every in battery pack
Even if the polarization of a single battery is different and can not also accomplish to completely unify with the parameter of the single battery of batch with model,
Therefore will appear single battery synchronization SOC(charge percentage in battery pack in charging) inconsistent situation, cause to hold
Small over-charging of battery is measured, the big battery of capacity can not be full of, similar wooden pail effect.Although existing fast charge technology charge rate starts
Improve, but still not can guarantee the capacity of all batteries in battery pack and be full of to the greatest extent, cause the capacity of battery without
Method is full of, and reduces actual capacity.
Summary of the invention
Technical problem to be solved of the invention is that the single battery in battery pack can be carried out by providing one kind
Weighing apparatus charging, and guarantee that each battery can full charge of battery pack balancing charging circuit and its charging method in battery pack.
The technical solution of present invention solution above-mentioned technical problem are as follows:
A kind of battery pack balancing charge circuit, including the battery pack that power end and several batteries are composed in series, the power supply and institute
Battery pack series connection is stated, it further includes the control for there are several to match with the battery that the both ends of the battery pack are electrically connected with load
Circuit processed, the control circuit is in parallel with the battery, the control circuit include analog switch module, message processing module with
Battery monitoring module composition, the message processing module are electrically connected with the analog switch module, the battery monitoring module respectively
It connects, the analog switch module is in parallel with the battery both ends, and the battery monitoring module is electrically connected with the battery, the letter
It ceases processing module and controls the analog switch module, the battery monitoring module detects the battery.
Specifically, the analog switch module is made of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3 and Current Controlled Current Source,
The metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 are electrically connected with the grid of the metal-oxide-semiconductor Q3 with the message processing module, the metal-oxide-semiconductor
In the drain electrode of the source level and the drain electrode difference metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 of Q1, the metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3's
Source level and drain electrode are connected in parallel on respectively in the positive electrode and negative electrode of the battery, and the Current Controlled Current Source is connected with metal-oxide-semiconductor Q3, institute
The electric current for stating Current Controlled Current Source is 1.5C.
Specifically, the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 and the metal-oxide-semiconductor Q3 are N-channel MOS pipe.
Specifically, the message processing module is PIC12F615 single-chip microcontroller, the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 and institute
The grid for stating metal-oxide-semiconductor Q3 is electrically connected with the end PWM1 of the message processing module, the end PWM2 with the end PWM2 respectively.
Specifically, the battery monitoring module be BQ27620-G1 chip, the end PACK+ of the Battery control module with
The end PACK- is connected with the positive electrode and negative electrode of the battery respectively, the end DATA of the Battery control module and the PIC12F615
The end DATA of single-chip microcontroller is connected.
Preferably, the power end be can only variable constant current charge power supply.
Another technical solution of present invention solution above-mentioned technical problem are as follows:
A kind of battery pack balancing charging method applied to above-mentioned battery pack balancing charge circuit, includes the following steps:
Precharge is connected to power end, is pre-charged with 0.1c to entire circuit group, at this point, metal-oxide-semiconductor Q1 in analog switch module
Conducting, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 end；
Constant-current charge, when the voltage of battery pack reaches 2.05V or more, power end intelligently changes charging current, with the electricity of 1.0C
Stream starts to carry out constant-current charge to battery pack；
Pulse charge enters when the voltage that battery monitoring module monitors corresponding battery charges to the 80% of battery voltage rating
The cycle charging state of positive pulse charging, no pulse finishing and negative pulse discharge；
Charging is completed, pours the electricity of battery when a positive pulse charging less than the specified appearance of battery when battery monitoring module monitors
Amount 0.1% when, battery monitoring module will transmitting stop charging signals to message processing module, message processing module will control MOS
Pipe Q1 and metal-oxide-semiconductor Q3 ends, and metal-oxide-semiconductor Q2 is connected, and corresponding battery is made to enter single battery halted state, until owning in battery pack
Battery when entering single battery halted state, charging complete.
Specifically, the pulse charge step further includes following steps:
Positive pulse charging, battery of the battery monitoring module detection in constant-current charge or negative pulse discharge, until corresponding electricity
When cell voltage is the 80% of battery voltage rating, positive pulse signal is sent to message processing module, message processing module receives just
When pulse signal, the metal-oxide-semiconductor Q1 conducting of control analog switch module, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 end, with the electric current pair of 1.0C
Battery charges, and battery open circuit voltage is made to reach voltage rating, completes a positive pulse charging；
No pulse finishing, when battery monitoring module detects that the electricity for being filled with battery when a positive pulse charging is specified greater than battery
Capacity 0.1% when, by battery monitoring module transmitting no pulse trim signals to message processing module, message processing module control
The metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 of analog switch module end, and metal-oxide-semiconductor Q2 is connected, and corresponding battery is made to enter no pulse finishing, nothing
The time restriction of pulse finishing is 50 ~ 150ms；
Negative pulse discharge, after no pulse finishing is complete, signal processing module will control metal-oxide-semiconductor Q2 cut-off, and metal-oxide-semiconductor Q1 is connected
With metal-oxide-semiconductor Q3, at this point, due to the concatenated electric current of metal-oxide-semiconductor Q3 be 1.5C Current Controlled Current Source and power end output electricity
The contrary of 1.0C is flowed, corresponding battery forms the negative pulse discharge that an electric current is 0.5C, until corresponding cell voltage
Drop to the 80% of voltage rating.
Of the invention has the advantages that in such a way that preliminary filling point, constant-current charge and pulse charge be combined with each other
It charges to battery pack, quickly eliminates the polarization of battery during the charging process to reach, and then improve charge rate,
It realizes the purpose of quick charge, while analog switch module is added to the single battery of each of battery pack, guarantee power end
It is able to maintain in the state of constant current, pulse charge is carried out to different single batteries, and then realize to each list in battery pack
One battery is controlled, and guarantees that each battery can be completely filled with, it is final realize with charge independence theoretically identical SOC, reach
To the purpose of the equalizaing charge of battery.
Detailed description of the invention
Fig. 1 is the integrated circuit structural schematic diagram of battery pack balancing charging circuit of the present invention.
Fig. 2 is the analog switch modular circuit structural schematic diagram of battery pack balancing charging circuit of the present invention.
Fig. 3 is the catenation principle schematic diagram of BQ27620-G1 chip in battery pack balancing charging circuit of the present invention.
Fig. 4 is the current flow diagram of positive pulse charging in battery pack balancing charging method of the present invention.
Fig. 5 is the current flow diagram of no pulse finishing in battery pack balancing charging method of the present invention.
Fig. 6 is the current flow diagram of negative pulse discharge in battery pack balancing charging method of the present invention.
Specific embodiment
It elaborates with reference to the accompanying drawing to the present invention.
If a kind of battery pack balancing charge circuit of the embodiment of the present invention is as shown in Figure 1-3, include power end and dry cell
The battery pack being composed in series, the power supply are connected with the battery pack, and the both ends of the battery pack are electrically connected with load, further include
The control circuit for having several to match with the battery, the control circuit is in parallel with the battery, the control circuit packet
Include analog switch module, message processing module and battery monitoring module form, the message processing module respectively with the simulation
Switch module, battery monitoring module electrical connection, the analog switch module is in parallel with the battery both ends, the battery prison
Control module is electrically connected with the battery, and the message processing module controls the analog switch module, the battery monitoring module
Detect the battery.
Specifically, the analog switch module is made of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3 and Current Controlled Current Source,
The metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 are electrically connected with the grid of the metal-oxide-semiconductor Q3 with the message processing module, the metal-oxide-semiconductor
In the drain electrode of the source level and the drain electrode difference metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 of Q1, the metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3's
Source level and drain electrode are connected in parallel on respectively in the positive electrode and negative electrode of the battery, and the Current Controlled Current Source is connected with metal-oxide-semiconductor Q3, institute
The electric current for stating Current Controlled Current Source is to be labeled as 1.5I in 1.5C(figure).
Specifically, the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 and the metal-oxide-semiconductor Q3 are N-channel MOS pipe.Preferably, described
Metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 and the source level of the metal-oxide-semiconductor Q3 and drain electrode both ends it is corresponding be parallel with protection diode D1, D2,
D3。
Specifically, the message processing module is PIC12F615 single-chip microcontroller, the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 and institute
The grid for stating metal-oxide-semiconductor Q3 is electrically connected with the end PWM1 of the message processing module, the end PWM2 with the end PWM2 respectively.Information processing mould
Block is the singlechip chip of one piece of programmed, and using PIC12F615 chip, the chip is by programming and flash memory capability, maximum branch
6 PWM modulation stitch are held, battery monitoring module is connected to, PIC12F615 single-chip microcontroller can be according to the charged state received
(%), battery capacity (mAH) and open-circuit voltage (mV) calculate the capacity that positive pulse is filled with each time and (are filled by positive pulse
The capacity difference of electric front and back calculates), and the corresponding parameter for calculating negative pulse, by pairs of each metal-oxide-semiconductor switch of Program transformation
PWM is controlled, and the PWM control pin on single-chip microcontroller is directly connected to the grid to inductive switch, is controlled the conducting of MOS with this and is cut
Only.Charge power supply, first with 0.1C to battery pack preliminary filling, is then kept being labeled as I in 1C(figure by the predetermined program write) constant current
Charging, after the battery in battery pack is completely filled with the short circuit disconnection from circuit, power outage.
Specifically, the battery monitoring module be BQ27620-G1 chip, the end PACK+ of the Battery control module with
The end PACK- is connected with the positive electrode and negative electrode of the battery respectively, the end DATA of the Battery control module and the PIC12F615
The end DATA of single-chip microcontroller is connected.By BQ27620-G1 chip carry out monitoring cell electricity quantity only need to by PACK+, PACK- and
Thermistor (T) is connected to dismountable pond group or embedded battery circuit, and BQ27620-G1 chip can acquire the electricity of battery
(mAH), the open-circuit voltage (mV) of charged state (%) and battery, and send data in message processing module.
Preferably, the power end be can only variable constant current charge power supply.
The present invention also provides another technical solutions for solving above-mentioned technical problem are as follows:
A kind of battery pack balancing charging method applied to above-mentioned battery pack balancing charge circuit, includes the following steps:
Precharge is connected to power end, is pre-charged with 0.1c to entire circuit group, at this point, metal-oxide-semiconductor Q1 in analog switch module
Conducting, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 end；
Constant-current charge, when the voltage of battery pack reaches 2.05V or more, power end intelligently changes charging current, with the electricity of 1.0C
Stream starts to carry out constant-current charge to battery pack；
Pulse charge enters when the voltage that battery monitoring module monitors corresponding battery charges to the 80% of battery voltage rating
The cycle charging state of positive pulse charging, no pulse finishing and negative pulse discharge；Specifically, further including following steps:
Positive pulse charging, as shown in figure 4, battery of the battery monitoring module detection in constant-current charge or negative pulse discharge, directly
When extremely corresponding cell voltage is the 80% of battery voltage rating, positive pulse signal is sent to message processing module, information processing mould
When block receives positive pulse signal, the metal-oxide-semiconductor Q1 conducting of control analog switch module, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 end, with
The current versus cell of 1.0C charges, and battery open circuit voltage is made to reach voltage rating, completes a positive pulse charging；
No pulse finishing, as shown in figure 5, when battery monitoring module detects that the electricity for being filled with battery when a positive pulse charging is big
When the 0.1% of battery rated capacity, by battery monitoring module transmitting no pulse trim signals to message processing module, at information
Metal-oxide-semiconductor Q1 and metal-oxide-semiconductor the Q3 cut-off for managing module control analog switch module, are connected metal-oxide-semiconductor Q2, corresponding battery are made to enter acrotism
Punching finishing, the time restriction of no pulse finishing are 50 ~ 150ms；No pulse finishing is mainly used for calculating for chip and negative pulse turns
Change the polarization phenomena that buffering is provided and negative pulse itself can be eliminated
Negative pulse discharge, as shown in fig. 6, signal processing module will control metal-oxide-semiconductor Q2 cut-off after no pulse finishing is complete, and
Metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 is connected, at this point, due to the Current Controlled Current Source and power supply that are 1.5C with the concatenated electric current of metal-oxide-semiconductor Q3
Hold that the electric current 1.0C's of output is contrary, it is to be labeled as 0.5I in 0.5C(figure that corresponding battery, which forms an electric current) negative arteries and veins
Impulse electricity, until corresponding cell voltage drops to the 80% of voltage rating.
It is found through experiments that, preferable depolarization effect can be played by carrying out negative pulse discharge using the discharge rate of 0.5C, be reached
To highest charge rate (discharge capacity/when secondary charging capacity), and biggish temperature change will not be caused, and due to high SOC(lotus
Electricity condition) when battery it is sensitive to unpolarizing, negative pulse artificially advises the discharge capacity of negative pulse each time without excessive
Fixed control is controlled in the 0.5%(of upper primary positive pulse charge volume by data that chip detects), it determines after discharge capacity by bearing
The amplitude (0.5C) of pulse can calculate the width of negative pulse discharge each time, i.e. discharge time, then the meter of negative pulse discharge
Calculation mode is " to set discharge capacity as X, since negative pulse discharge amount is small, electric discharge can be regarded as linear process, then negative pulse discharge
Width be 7200*X/C(s) " so also simultaneously by negative pulse it is total discharge capacity control total capacity 20%*0.5%=0.1%,
It ensure that charge efficiency.
Charging is completed, pours the electricity of battery when a positive pulse charging less than battery volume when battery monitoring module monitors
Constant volume 0.1% when, transmitting is stopped charging signals to message processing module by battery monitoring module, and message processing module will be controlled
Metal-oxide-semiconductor Q1 processed and metal-oxide-semiconductor Q3 ends, and metal-oxide-semiconductor Q2 is connected, and so that corresponding battery is entered single battery halted state, until battery pack
In all battery when entering single battery halted state, charging complete.
The above content is combine specific preferred embodiment to the further description done of the present invention, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (8)
1. a kind of battery pack balancing charge circuit, including the battery pack that power end and several batteries are composed in series, the power supply with
The battery pack series connection, the both ends of the battery pack are electrically connected with load, it is characterised in that: further include having several and the electricity
The control circuit that pond matches, the control circuit is in parallel with the battery, and the control circuit includes analog switch module, letter
Processing module and battery monitoring module is ceased to form, the message processing module respectively with the analog switch module, the battery
Monitoring module electrical connection, the analog switch module is in parallel with the battery both ends, the battery monitoring module and the battery
Electrical connection, the message processing module control the analog switch module, and the battery monitoring module detects the battery.
2. battery pack balancing charge circuit according to claim 1, it is characterised in that: the analog switch module is by MOS
Pipe Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3 and Current Controlled Current Source form, the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 and the metal-oxide-semiconductor Q3
Grid be electrically connected with the message processing module, the source level of the metal-oxide-semiconductor Q1 and drain electrode respectively the metal-oxide-semiconductor Q2 with it is described
In the drain electrode of metal-oxide-semiconductor Q3, the source level and drain electrode of the metal-oxide-semiconductor Q2 and the metal-oxide-semiconductor Q3 are connected in parallel on the anode of the battery respectively
On cathode, the Current Controlled Current Source is connected with metal-oxide-semiconductor Q3, and the electric current of the Current Controlled Current Source is 1.5C.
3. battery pack balancing charge circuit according to claim 2, it is characterised in that: the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor
The Q2 and metal-oxide-semiconductor Q3 is N-channel MOS pipe.
4. battery pack balancing charge circuit according to claim 2, it is characterised in that: the message processing module is
PIC12F615 single-chip microcontroller, the grid of the metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q2 and the metal-oxide-semiconductor Q3 respectively with the information processing
The end PWM1, the end PWM2 of module are electrically connected with the end PWM2.
5. battery pack balancing charge circuit according to claim 4, it is characterised in that: the battery monitoring module is
BQ27620-G1 chip, the end PACK+ of the Battery control module and the end PACK- respectively with the positive electrode and negative electrode phase of the battery
Even, the end DATA of the Battery control module is connected with the end DATA of the PIC12F615 single-chip microcontroller.
6. battery pack balancing charge circuit described in -5 any one according to claim 1, it is characterised in that: the power end is
It can only variable constant current charge power supply.
7. a kind of battery pack balancing charging method applied to the battery pack balancing charge circuit as described in claim 1-6, special
Sign is, includes the following steps:
Precharge is connected to power end, is pre-charged with 0.1c to entire circuit group, at this point, metal-oxide-semiconductor Q1 in analog switch module
Conducting, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 end；
Constant-current charge, when the voltage of battery pack reaches 2.05V or more, power end intelligently changes charging current, with the electricity of 1.0C
Stream starts to carry out constant-current charge to battery pack；
Pulse charge enters when the voltage that battery monitoring module monitors corresponding battery charges to the 80% of battery voltage rating
The cycle charging state of positive pulse charging, no pulse finishing and negative pulse discharge；
Charging is completed, pours the electricity of battery when a positive pulse charging less than the specified appearance of battery when battery monitoring module monitors
Amount 0.1% when, battery monitoring module will transmitting stop charging signals to message processing module, message processing module will control MOS
Pipe Q1 and metal-oxide-semiconductor Q3 ends, and metal-oxide-semiconductor Q2 is connected, and corresponding battery is made to enter single battery halted state, until owning in battery pack
Battery when entering single battery halted state, charging complete.
8. battery pack balancing charging method according to claim 7, which is characterized in that the pulse charge step further includes
Following steps:
Positive pulse charging, battery of the battery monitoring module detection in constant-current charge or negative pulse discharge, until corresponding electricity
When cell voltage is the 80% of battery voltage rating, positive pulse signal is sent to message processing module, message processing module receives just
When pulse signal, the metal-oxide-semiconductor Q1 conducting of control analog switch module, metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 end, with the electric current pair of 1.0C
Battery charges, and battery open circuit voltage is made to reach voltage rating, completes a positive pulse charging；
No pulse finishing, when battery monitoring module detects that the electricity for being filled with battery when a positive pulse charging is specified greater than battery
Capacity 0.1% when, by battery monitoring module transmitting no pulse trim signals to message processing module, message processing module control
The metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 of analog switch module end, and metal-oxide-semiconductor Q2 is connected, and corresponding battery is made to enter no pulse finishing, nothing
The time restriction of pulse finishing is 50 ~ 150ms；
Negative pulse discharge, after no pulse finishing is complete, signal processing module will control metal-oxide-semiconductor Q2 cut-off, and metal-oxide-semiconductor Q1 is connected
With metal-oxide-semiconductor Q3, at this point, due to the concatenated electric current of metal-oxide-semiconductor Q3 be 1.5C Current Controlled Current Source and power end output electricity
The contrary of 1.0C is flowed, corresponding battery forms the negative pulse discharge that an electric current is 0.5C, until corresponding cell voltage
Drop to the 80% of voltage rating.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020203211A1 (en) * | 2019-03-29 | 2020-10-08 | 住友化学株式会社 | Luminescent element and composition for luminescent element |
| CN116667506A (en) * | 2023-08-02 | 2023-08-29 | 荣耀终端有限公司 | Discharge circuit, discharge method thereof and electronic equipment |
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| CN202218026U (en) * | 2011-01-12 | 2012-05-09 | 肖相如 | Positive and negative pulse charging device |
| CN106129509A (en) * | 2016-06-28 | 2016-11-16 | 北方工业大学 | Integrated battery of charge-discharge controller |
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| WO2020203211A1 (en) * | 2019-03-29 | 2020-10-08 | 住友化学株式会社 | Luminescent element and composition for luminescent element |
| CN116667506A (en) * | 2023-08-02 | 2023-08-29 | 荣耀终端有限公司 | Discharge circuit, discharge method thereof and electronic equipment |
| CN116667506B (en) * | 2023-08-02 | 2024-04-05 | 荣耀终端有限公司 | Discharge circuit, discharge method thereof and electronic equipment |
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