CN207766002U - A kind of output control circuit of Battery formation power supply - Google Patents
A kind of output control circuit of Battery formation power supply Download PDFInfo
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- CN207766002U CN207766002U CN201820075816.4U CN201820075816U CN207766002U CN 207766002 U CN207766002 U CN 207766002U CN 201820075816 U CN201820075816 U CN 201820075816U CN 207766002 U CN207766002 U CN 207766002U
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- channel mos
- electronic switch
- power supply
- mos pipe
- battery formation
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Abstract
The utility model discloses a kind of output control circuits of Battery formation power supply that is safe and reliable, can reducing calorific value, including：One forward drive electronic switch and a reverse drive electronic switch, at least two N-channel MOS FET pipes are the first N-channel MOS pipe and the second N-channel MOS pipe and accessory power supply, the grid of first N-channel MOS pipe and the second N-channel MOS pipe simultaneously connects, the source electrode of first N-channel MOS pipe is connected with the anode of Battery formation power supply, output end of the source electrode of second N-channel MOS pipe as Battery formation power supply, the drain electrode of first N-channel MOS pipe is connected with the drain electrode of the second N-channel MOS pipe, forward drive electronic switch controls the break-make of reverse drive electronic switch, reverse drive electronic switch controls the break-make of the first N-channel MOS pipe and the second N-channel MOS pipe.The purposes of output control circuit described in the utility model is very extensive, is particularly suitable for the output control of formation of Li-ion batteries power supply.
Description
Technical field
The utility model is related to a kind of output control circuit of power supply, and in particular to a kind of the defeated of Battery formation power supply
Go out control circuit.
Background technology
In formation of Li-ion batteries power supply, due to the particularity of load, i.e. battery itself is also a kind of power supply.Generally require volume
Outer increase output control circuit, for preventing big short circuit caused by the positive and negative reversal connection of battery.After chemical conversion, electricity can be disconnected
Source, battery capacity is not lost after ensureing chemical conversion.In traditional formation of Li-ion batteries power-supply device, the output control circuit of power supply is logical
Often there are three types of modes：The first is single N-channel MOS FET output control circuits, and second is relay output control circuit, the
Three kinds be P-channel MOSFET, N-channel MOS FET docking output control circuit.In actual use, first way is deposited
The problem of be：After power device failure, big short circuit can be led to if battery connects, there are serious safety is hidden
Suffer from.The second way the problem is that：Relay it is bulky, moreover, the mechanical life of its electric contact is restricted.Due to
Above two mode there are larger defect, thus, at present most are the third modes, but the third mode there is also
Some problems, i.e.,：It is limited by semiconductor fabrication process, the conduction impedance of P-channel MOSFET is much larger than N-channel MOS FET, this
Sample will increase calorific value in use, reduce power-efficient.
Utility model content
Technical problem to be solved in the utility model is：There is provided it is a kind of it is safe and reliable, the battery of calorific value can be reduced
At the output control circuit of power supply.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of output of Battery formation power supply
Control circuit, including：One forward drive electronic switch and a reverse drive electronic switch, at least two N-channel MOS FET
Pipe is the first N-channel MOS pipe and the second N-channel MOS pipe and voltage and N-channel MOS FET with the Battery formation power supply
Manage matched accessory power supply, the cathode of accessory power supply is connected with the cathode of the Battery formation power supply, forms holding altogether, and first
The grid of N-channel MOS pipe and the second N-channel MOS pipe simultaneously connects, the source electrode of the first N-channel MOS pipe and the Battery formation power supply
Anode is connected, and the drain electrode of the first N-channel MOS pipe is connected with the drain electrode of the second N-channel MOS pipe, the source electrode of the second N-channel MOS pipe
As the output end of Battery formation power supply, the control terminal of the forward drive electronic switch is as the defeated of the Battery formation power supply
Go out the control terminal of control circuit, the ground connection of forward drive electronic switch terminates holding altogether, the forward drive electronic switch it is defeated
Outlet is connected by the 5th resistance with the control terminal of reverse drive electronic switch, and the output end of the forward drive electronic switch is also
The anode of accessory power supply is connected to by the 4th resistance, the power end of reverse drive electronic switch is connected with the anode of accessory power supply,
The grid phase that the output end of reverse drive electronic switch passes through second resistance and the first N-channel MOS pipe and the second N-channel MOS pipe
Even, the output end of reverse drive electronic switch is connected by first resistor with the source electrode of the first N-channel MOS pipe, reverse drive electricity
The output end of sub switch is connected by 3rd resistor with the source electrode of the second N-channel MOS pipe.
As a preferred embodiment, in a kind of output control circuit of Battery formation power supply, the positive drive
The concrete structure of dynamic electronic switch includes：The base stage of first NPN type triode, the first NPN type triode is the forward drive
The control terminal of electronic switch, the ground terminal of the transmitting extremely forward drive electronic switch of the first NPN type triode, the first NPN type
The output end of the current collection of triode extremely forward drive electronic switch.
As a preferred embodiment, in a kind of output control circuit of Battery formation power supply, the reversed drive
The concrete structure of dynamic electronic switch includes：The base stage of second PNP type triode, the second PNP type triode is the reverse drive
The control terminal of electronic switch, the power end of the transmitting extremely reverse drive electronic switch of the second PNP type triode, the second positive-negative-positive
The output end of the current collection of triode extremely reverse drive electronic switch.
The beneficial effects of the utility model are：It is described in the utility model compared with the first traditional output control circuit
Output control circuit the battery short circuit caused by reversal connection can be prevented in the case where power circuit damages；It is passed with second
The output control circuit of system is compared, and output control circuit described in the utility model can reduce volume, increases service life；With
The third traditional output control circuit is compared, since N-channel MOS FET is smaller than the conduction loss of P-channel MOSFET, this practicality
The novel output control circuit can reduce calorific value, improve system effectiveness.
Description of the drawings
Fig. 1 is the electric theory structure schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram that output control circuit described in the utility model is labelled with test point.
Fig. 3 is the test point voltage curve of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings, a kind of output control circuit of Battery formation power supply described in the utility model is described in detail
Specific embodiment.
As shown in Figure 1, a kind of output control circuit of Battery formation power supply described in the utility model, structure include：
One as the first NPN type triode Q1 of forward drive electronic switch and one as reverse drive electronic switch second
PNP type triode Q2, at least two N-channel MOS FET pipes be the first N-channel MOS pipe M1 and the second N-channel MOS pipe M2 and
Manage matched accessory power supply with the voltage of the Battery formation power supply and N-channel MOS FET, the cathode of accessory power supply with it is described
The cathode of Battery formation power supply is connected, forms holding altogether (belonging to the conventional techniques of this field, be not shown in figure), the first N-channel
The grid of metal-oxide-semiconductor M1 and the second N-channel MOS pipe M2 simultaneously connect, source electrode and the Battery formation power supply of the first N-channel MOS pipe M1
Anode be connected, the drain electrode of the first N-channel MOS pipe M1 is connected with the drain electrode of the second N-channel MOS pipe M2, the second N-channel MOS pipe
Output end of the source electrode of M2 as Battery formation power supply, the control terminal of the forward drive electronic switch is as the Battery formation
The emitter of the control terminal of the output control circuit of power supply, the first NPN type triode Q1 connects holding altogether, the first NPN type triode
The collector of Q1 is connected by the 5th resistance R5 with the base stage of the second PNP type triode Q2, the first NPN type triode Q1 collectors
The anode of accessory power supply, the anode of the emitter and accessory power supply of the second PNP type triode Q2 are also connected to by the 4th resistance R4
It is connected, the collector of the second PNP type triode Q2 passes through second resistance R2 and the first N-channel MOS pipe M1 and the second N-channel MOS
The grid of pipe M2 is connected, the source that the collector of the second PNP type triode Q2 passes through first resistor R1 and the first N-channel MOS pipe M1
Extremely it is connected, the collector of the second PNP type triode Q2 is connected by 3rd resistor R3 with the source electrode of the second N-channel MOS pipe M2.
When practical application, the first N-channel MOS pipe M1 and the second N-channel MOS pipe M2 select model
The N-channel MOS FET pipes of STP260N4F7, the first resistor R1, second resistance R2 and 3rd resistor R3 select 100K electric
Resistance, the 4th resistance R4, the 5th resistance R5 select 10K resistance, the first NPN type triode Q1 to select model
The NPN triode type of S8050, the second PNP type triode Q2 select the PNP triode type of model S8550, auxiliary electricity
15V DC power supplies are selected in source.
The operation principle of the utility model is described by taking 5V lithium batteries as an example below：When the utility model accesses 5V lithium batteries
Afterwards, when not charging to lithium battery, control signal is low level, i.e.,：The base stage of first NPN type triode Q1 is low level, the
One NPN type triode Q1 cut-offs, the BE voltages of the second PNP type triode Q2 are equal, are also at cut-off state, therefore, the first N ditches
The gate source voltage of road metal-oxide-semiconductor M1 and the second N-channel MOS pipe M2 are equal, are in cut-off state, at this moment, output control circuit is in
Closed state.If necessary to charge to lithium battery, then height can be set by control signal to open output control circuit.Control letter
After number setting height, the first NPN type triode Q1 conductings, the collector potential of the first NPN type triode Q1 becomes low level, to make
Second PNP type triode Q2 conductings, due to the material property (ternary lithium or LiFePO4) of lithium battery itself, lithium battery and institute
The ceiling voltage for stating the anode of Battery formation power supply is no more than 5V, therefore the gate source voltage of two N-channel MOS pipes is 15-5=
10V, N-channel MOS FET pipe can be fully on, in particular, referring to figs. 2 and 3, when control signal sets high, the first NPN type
The BE electric currents of triode Q1 saturation conductions, the second PNP type triode Q2 are -1.5mA, according to putting for the second PNP type triode Q2
The 200 times of calculating of big multiple, the saturation current of the CE of the second PNP type triode Q2 is -300mA, due to first resistor R1 and third
Resistance R3 is 100K, and the electric current for actually flowing through the second PNP type triode Q2 is 0.2mA, therefore, the second PNP type triode Q2
Fully on, the collector voltage-to-ground of the second PNP type triode Q2 is 15V, and because of the voltage and electricity of Battery formation power supply
Cell voltage is 5V, and the GS voltages that the two subtracts each other to obtain the first N-channel MOS pipe M1 and the second N-channel MOS pipe M2 are 10V, and first
N-channel MOS pipe M1 and the second N-channel MOS pipe M2 conductings.
In conclusion the only preferred embodiment of the utility model, is not used for limiting the utility model implementation
Range, equivalent change made by all shapes according to described in the utility model claims range, construction, feature and spirit with repair
Decorations, should all include in the right of the utility model.
Claims (3)
1. a kind of output control circuit of Battery formation power supply, including：One forward drive electronic switch and a reverse drive
Electronic switch, which is characterized in that the output control circuit further includes having：At least two N-channel MOS FET pipes are the first N ditches
Road metal-oxide-semiconductor and the second N-channel MOS pipe and matched auxiliary with the voltage of the Battery formation power supply and N-channel MOS FET pipe
Help power supply, the cathode of accessory power supply is connected with the cathode of the Battery formation power supply, forms holding altogether, the first N-channel MOS pipe and
The grid of second N-channel MOS pipe simultaneously connects, and the source electrode of the first N-channel MOS pipe is connected with the anode of the Battery formation power supply, the
The drain electrode of one N-channel MOS pipe is connected with the drain electrode of the second N-channel MOS pipe, and the source electrode of the second N-channel MOS pipe is as Battery formation
The output end of power supply, the output control circuit of the control terminal of the forward drive electronic switch as the Battery formation power supply
The ground connection of control terminal, forward drive electronic switch terminates holding altogether, and the output end of the forward drive electronic switch passes through the 5th
Resistance is connected with the control terminal of reverse drive electronic switch, and the output end of the forward drive electronic switch also passes through the 4th resistance
It is connected to the anode of accessory power supply, the power end of the reverse drive electronic switch is connected with the anode of accessory power supply, reverse drive
The output end of electronic switch is connected by second resistance with the grid of the first N-channel MOS pipe and the second N-channel MOS pipe, reversed to drive
The output end of dynamic electronic switch is connected by first resistor with the source electrode of the first N-channel MOS pipe, reverse drive electronic switch it is defeated
Outlet is connected by 3rd resistor with the source electrode of the second N-channel MOS pipe.
2. a kind of output control circuit of Battery formation power supply according to claim 1, it is characterised in that：The positive drive
The concrete structure of dynamic electronic switch includes：The base stage of first NPN type triode, the first NPN type triode is the forward drive
The control terminal of electronic switch, the ground terminal of the transmitting extremely forward drive electronic switch of the first NPN type triode, the first NPN type
The output end of the current collection of triode extremely forward drive electronic switch.
3. a kind of output control circuit of Battery formation power supply according to claim 1 or 2, it is characterised in that：It is described anti-
Include to the concrete structure of electronic switch is driven：The base stage of second PNP type triode, the second PNP type triode is described reversed
The control terminal of driving electronic switch, the power end of the transmitting extremely reverse drive electronic switch of the second PNP type triode, second
The output end of the current collection of PNP type triode extremely reverse drive electronic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820075816.4U CN207766002U (en) | 2018-01-17 | 2018-01-17 | A kind of output control circuit of Battery formation power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820075816.4U CN207766002U (en) | 2018-01-17 | 2018-01-17 | A kind of output control circuit of Battery formation power supply |
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| Publication Number | Publication Date |
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| CN207766002U true CN207766002U (en) | 2018-08-24 |
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| CN201820075816.4U Active CN207766002U (en) | 2018-01-17 | 2018-01-17 | A kind of output control circuit of Battery formation power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116455377A (en) * | 2023-04-12 | 2023-07-18 | 宁波阔野科技有限公司 | Switch array driving circuit |
-
2018
- 2018-01-17 CN CN201820075816.4U patent/CN207766002U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116455377A (en) * | 2023-04-12 | 2023-07-18 | 宁波阔野科技有限公司 | Switch array driving circuit |
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