CN108233436A - The Li-ion batteries piles of intelligent control charge and discharge - Google Patents
The Li-ion batteries piles of intelligent control charge and discharge Download PDFInfo
- Publication number
- CN108233436A CN108233436A CN201611146189.0A CN201611146189A CN108233436A CN 108233436 A CN108233436 A CN 108233436A CN 201611146189 A CN201611146189 A CN 201611146189A CN 108233436 A CN108233436 A CN 108233436A
- Authority
- CN
- China
- Prior art keywords
- discharge
- lithium battery
- preliminary filling
- charge
- ion batteries
- 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.)
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Classifications
-
- 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
Abstract
The present invention relates to and field of batteries; refer specifically to a kind of Li-ion batteries piles of intelligent control charge and discharge; including lithium-ion electric core group, the battery core protection control circuit for connecting conducted signal, preliminary filling electric network; wherein include charge and discharge protecting switching tube and the integrated IC of control in battery core protection control circuit; at PACK+ ends; a preliminary filling electric network is formed between discharge protection switch pipe N1, R18, Q1, realizes low current preliminary filling electro ultrafiltration.When lithium battery voltage is relatively low, it charges to i.e. 0.05 0.1C of one smaller current of lithium battery, prevent lithium battery active materials from not obtaining also carrying out large current charge before discharging completely, it avoids lithium battery permanent damage is caused even to smolder, is on fire, the major safety risks such as explosion, improves the quality of lithium battery.
Description
Technical field
The present invention relates to field of batteries, refer specifically to a kind of Li-ion batteries piles of intelligent control charge and discharge.
Background technology
With the development of science and technology, more and more electronic products for various purposes come into being, and electronics is supported to produce
The battery of product work is then the lifeline of electronic product, and aobvious is particularly important.In general, the lithium ion that laptop uses
Intelligent battery group is made of three parts：The shell of lithium-ion electric core group, battery core protection control circuit and encapsulation, wherein battery core are protected
Control circuit supports entire smart battery system management bus functionality, and battery core is protected control circuit by charging protection switch pipe, put
The circuits groups such as electric protective circuit breaker pipe, control Integrated circuit IC, telecommunication circuit, coulomb counting circuit, overcurrent and short-circuit protection circuit
Into it is used for realizing the electric discharge minimum voltage limitation of lithium battery group, charging ceiling voltage limitation, temperature and current detecting and coulomb
A variety of circuit functions such as counting.
The charging of foregoing circuit is complete by charging protection switch pipe, discharge protection switch pipe and N-channel driving circuits
Into N-channel driving circuits are to provide the control of charge and discharge by integrated IC is controlled to judge the state of lithium battery.However, work as
When charging to lithium battery group, charging current is generally in 1800mA or so, when lithium battery group voltage is relatively low, be added in charging equipment with
The voltage difference of circuit is larger between battery pack, can lead to excessive charging current, is easily damaged lithium-ion electric core and battery core protection
Control circuit.
Invention content
Present invention aims at solving the problems, such as that existing intelligent battery group is above-mentioned, and provide a kind of intelligent control charge and discharge
Li-ion batteries piles.
The Li-ion batteries piles of intelligent control charge and discharge of the present invention, the electricity including lithium-ion electric core group, connection conducted signal
Core protects control circuit, charge and discharge protecting switching tube and the integrated IC of control is wherein included in battery core protection control circuit, described
Discharge protection switch pipe and the integrated IC of control between connect a preliminary filling electric network, the preliminary filling electric network includes at least one electricity
Resistance and field-effect tube.
Preferably, the resistance and field-effect tube series connection.
The preliminary filling electric network is also connected with a preliminary filling electric drive circuit.
The Li-ion batteries piles of intelligent control charge and discharge of the present invention, the electricity including lithium-ion electric core group, connection conducted signal
Core protects control circuit, charge and discharge protecting switching tube and the integrated IC of control is wherein included in battery core protection control circuit, in PACK+
End connects a precharge electric network, realizes low current preliminary filling electro ultrafiltration between discharge protection switch pipe N1 and the integrated IC of control.When
When lithium battery voltage is relatively low, charges to one smaller current, that is, 0.05-0.1C of lithium battery, prevent lithium battery active materials also
It does not obtain carrying out large current charge before discharging completely, avoids lithium battery permanent damage is caused even to smolder, is on fire, explosion etc.
Major safety risks improve the quality of lithium battery.
Figure of description
Fig. 1 is schematic block circuit diagram of the present invention；
Fig. 2 is circuit diagram of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, to this hair
It is bright to be further elaborated.It should be understood that specific implementation example described herein is only used to explain the present invention, not
For limiting the present invention.
The Li-ion batteries piles of intelligent control charge and discharge of the present invention, as shown in Figure 1, it includes lithium-ion electric core group 10, connects
The battery core protection control circuit 20 of conducted signal is connect, wherein battery core protection control circuit 20 is by charging protection switch pipe N1, electric discharge
Protection switch pipe N2 controls the compositions such as integrated IC.Wherein connected between the discharge protection switch pipe and the integrated IC of control
One preliminary filling electric network 30, the preliminary filling electric network are also connected with a preliminary filling electric drive circuit 40, and preliminary filling electric network 30 is used for realizing
Limit large current charge function.
As shown in Fig. 2, at PACK+ ends, connect a preliminary filling electric network between discharge protection switch pipe N2 and the integrated IC of control
30, the preliminary filling electric network includes an at least resistance R18 and field-effect tube Q1.It is pre- that the preliminary filling electric network 30 is also connected with one
Charge driving circuit 40, and preliminary filling electric drive circuit 40 detects that the voltage of lithium battery reaches precharge in control Integrated circuit IC
During design condition, charging protection switch pipe N1 is disconnected, preliminary filling electric drive circuit 40 exports low level, and preliminary filling field-effect tube Q1 is opened
It opening, precharge stream passes through Q1, after current-limiting resistance R18 current limlitings, starts to carry out low current 0.05-0.1C chargings to lithium battery, when
When lithium battery voltage is restored to suitable design voltage, this preliminary filling electric drive circuit 40 output high level, Q1 is disconnected, charge protection
Switching tube N2 is opened, and is charged at this time with fast charge electric current to lithium battery.More than circuit, which has reached, checks super-high-current, realizes low current
The function of precharge prevents lithium battery active materials from not obtaining also carrying out large current charge before discharging completely and damaging battery,
Improve the quality of lithium battery.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of Li-ion batteries piles of intelligent control charge and discharge, the battery core including lithium-ion electric core group, connection conducted signal is protected
Control circuit is protected, charge and discharge protecting switching tube and the integrated IC of control are wherein included in battery core protection control circuit, it is characterised in that：
A preliminary filling electric network is connected between the integrated IC of discharge protection switch pipe and control, the preliminary filling electric network is included at least
One resistance and field-effect tube.
2. the Li-ion batteries piles of intelligent control charge and discharge according to claim 1, it is characterised in that：The resistance and field
Effect pipe is connected.
3. the Li-ion batteries piles of intelligent control charge and discharge according to claim 1, it is characterised in that：The precharge
Network is also connected with a preliminary filling electric drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611146189.0A CN108233436A (en) | 2016-12-13 | 2016-12-13 | The Li-ion batteries piles of intelligent control charge and discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611146189.0A CN108233436A (en) | 2016-12-13 | 2016-12-13 | The Li-ion batteries piles of intelligent control charge and discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108233436A true CN108233436A (en) | 2018-06-29 |
Family
ID=62638898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611146189.0A Pending CN108233436A (en) | 2016-12-13 | 2016-12-13 | The Li-ion batteries piles of intelligent control charge and discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108233436A (en) |
-
2016
- 2016-12-13 CN CN201611146189.0A patent/CN108233436A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180629 |