CN206099756U - Inside low -cost singlechip supply circuit of BMS - Google Patents
Inside low -cost singlechip supply circuit of BMS Download PDFInfo
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- CN206099756U CN206099756U CN201621165385.8U CN201621165385U CN206099756U CN 206099756 U CN206099756 U CN 206099756U CN 201621165385 U CN201621165385 U CN 201621165385U CN 206099756 U CN206099756 U CN 206099756U
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Abstract
The utility model provides an inside low -cost singlechip supply circuit of BMS, including U22 master control PWM chip, U25 transformer, first coupler, second coupler and first inductance, RI interface, GND interface, SENSE interface and the VDD interface of U22 master control PWM chip connect publicly, the grid of GATE interface connection no. 1 MOS pipe of U22 master control PWM chip, the source electrode of MOS pipe is connected with the SENSE interface lead -out wire of U22 master control PWM chip, connects jointly publicly, through setting up U22 master control PWM chip simultaneously, the U25 transformer, first coupler, second coupler and first inductance, this kind of flyback switching power supply circuit is equipped with the subminiature transformer and can realizes wide region input into a single chip microcomputer power supply voltage output, and accomplish little volume, it is low -cost, the price of U22 master control PWM chip and EP10 transformer is all very low, wide input gap has been realized to this circuit, it is low -cost, can replace the wide region DCDC chip that costs an arm and a leg in the BMS system.
Description
[technical field]
The utility model is related to single chip circuit technical field, more particularly to a kind of small volume, low cost, is adapted to wide model
Enclose the BMS inside low cost monolithic machine power supply circuits of input voltage.
[background technology]
Battery management system (BMS) is the tie between battery and user, and main object is secondary cell.Secondary cell is deposited
In some following shortcomings, such as storage energy is few, short life, connection in series-parallel are tired using problem, safety in utilization, battery electric quantity estimation
Difficulty etc..The performance of battery is very complicated, and different types of battery behavior also differs greatly.
Battery management system (BMS) mainly aims at the utilization rate that can improve battery, prevents battery from occurring excessively filling
Electricity and over-discharge, extend the service life of battery, monitor the state of battery.Battery management system mainly by single-chip microcomputer and
Some original paper compositions of SCM peripheral.Wherein single-chip microcomputer will be with internal control element altogether, and this is accomplished by choosing whole string electricity
The voltage in pond is used as single-chip microcomputer supply voltage.The voltage of whole string battery typically all compares the high power supply electricity for needing to be reduced to single-chip microcomputer
Pressure can just allow single-chip microcomputer to use.In order to remove design iterations from, BMS typically all can go here and there public more.This is accomplished by one
Being adapted to wide-range input voltage can become the circuit of single-chip microcomputer supply voltage.
Based on the problems referred to above, how the less of circuit volume design could again be ensure that the input electricity of wide scope
Pressure is reduced to the supply voltage of single-chip microcomputer, and not excessive raising cost of manufacture, is asking for those skilled in the art Jing often considerations
Topic.
[utility model content]
To overcome the problems of prior art, the utility model to provide a kind of small volume, low cost, be adapted to wide model
Enclose the BMS inside low cost monolithic machine power supply circuits of input voltage.
The utility model solves the scheme of technical problem and is to provide a kind of BMS inside low cost monolithic machine power supply circuits, bag
Include U22 master control PWM chips, U25 transformers, the first coupler, the second coupler and the first inductance；
The RI interfaces of the U22 master controls PWM chip, GND interfaces, SENSE interfaces and VDD interfaces connect publicly；U22 master controls
The GATE interfaces of PWM chip connect the grid of one first metal-oxide-semiconductor, source electrode and the U22 master control PWM chips of first metal-oxide-semiconductor
SENSE interfaces lead-out wire connects, and connects jointly publicly；The port 2 of the drain electrode connection U25 transformers of first metal-oxide-semiconductor；U22
The GND interfaces lead-out wire of master control PWM chip connects the source electrode of one second metal-oxide-semiconductor, and the drain electrode connection first of second metal-oxide-semiconductor is coupled
The port 2 of device；
The port 1 of the U25 transformers is connected with the port 4 of the first coupler；And the port 1 and first of U25 transformers
The connecting line of Coupler ports 4 connect respectively first have the input of electrode capacitance, the output end of first resistor, second resistance it is defeated
Go out the output end of end and the first electric capacity, after the input of the input of the second resistance and the first electric capacity is intersecting one is connected
The output end of the first Zener diode, the input of first Zener diode is connected with the port 2 of U25 transformers；
The input of the first resistor is connected with the VDD interfaces of U22 master control PWM chips；
The FB interfaces of the U22 master controls PWM chip connect the port 1 of the second coupler, and the port 2 of the second coupler connects public affairs
Altogether, and between the port 1 and port 2 of the second coupler one second electric capacity is connected；The port 4 of second coupler connects
The negative electrode of one controllable accurate source of stable pressure, and the input of one the 3rd electric capacity；The port 3 of second coupler be connected described
The output end of the 3rd electric capacity of the port 4 of the second coupler is connected；
Connect respectively between the port 5 and port 8 of the U25 transformers one second have electrode capacitance, one the 3rd have electrode capacitance,
One the 4th electric capacity, the 5th electric capacity and the 6th electric capacity；All go here and there between 5th electric capacity and the input and output end of the 6th electric capacity
It is associated with inductance.
Preferably, the anode of the controllable accurate source of stable pressure and with reference to connecting resistance between pole；Controllable accurate source of stable pressure
With reference to pole and the second coupler port 3 and 4 tie point between connect resistance；The port 3 of second coupler is connected with
Resistance；The port 4 of the second coupler connects and is connected with the port 3 of the second coupler after a resistance of connecting after the 3rd electric capacity.
Preferably, there is between the input of electrode capacitance the pole of a voltage stabilizing two of connecting the port 8 of the U25 transformers with second
Pipe, and the input and output end of the Zener diode is also connected in parallel to one including resistance and the parallel circuit of electric capacity.
Preferably, the port 3 of the U25 transformers connects publicly, the connection of port 4 one resistance and one of U25 transformers
It is connected with the input of first resistor after Zener diode.
Preferably, it is connected in parallel between the grid of second metal-oxide-semiconductor and the GND interface lead-out wires of U22 master control PWM chips
There is a resistance circuit.
Preferably, the U25 transformers are EP10 high frequency transformers；Its width x length is 11mm, is highly 11.05mm.
Preferably, the external 3.3V input voltages in the port 1 of first coupler.
Preferably, the RI interfaces of the U22 master controls PWM chip are followed by publicly by a resistance of connecting.
Compared with prior art, a kind of BMS inside low cost monolithic machine power supply circuits of the utility model are by arranging simultaneously
U22 master control PWM chips, U25 transformers, the first coupler, the second coupler and the first inductance, this kind of inverse-excitation type switch power-supply
Circuit is simultaneously equipped with the i.e. achievable wide scope input single-chip microcomputer supply voltage output of microminiature transformer, and accomplish small size, low
The price of cost, U22 master controls PWM chip and EP10 transformers is all very low, this circuit realiration wide input range, and low cost can
To replace expensive wide scope DCDC chip in BMS systems.
[description of the drawings]
Fig. 1 is a kind of BMS inside low cost monolithic machine power supply circuits schematic diagram of the utility model.
[specific embodiment]
To make the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with drawings and Examples,
The utility model is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining this
Utility model, is not used to limit this utility model.
Fig. 1 is referred to, a kind of BMS inside low cost monolithic machine power supply circuits 1 of the utility model include U22 master control PWM cores
Piece, U25 transformers, the first coupler, the second coupler and the first inductance；
The RI interfaces of the U22 master controls PWM chip, GND interfaces, SENSE interfaces and VDD interfaces connect publicly；U22 master controls
The GATE interfaces of PWM chip connect the grid of one first metal-oxide-semiconductor, source electrode and the U22 master control PWM chips of first metal-oxide-semiconductor
SENSE interfaces lead-out wire connects, and connects jointly publicly；The port 2 of the drain electrode connection U25 transformers of first metal-oxide-semiconductor；U22
The GND interfaces lead-out wire of master control PWM chip connects the source electrode of one second metal-oxide-semiconductor, and the drain electrode connection first of second metal-oxide-semiconductor is coupled
The port 2 of device；
The port 1 of the U25 transformers is connected with the port 4 of the first coupler；And the port 1 and first of U25 transformers
The connecting line of Coupler ports 4 connect respectively first have the input of electrode capacitance, the output end of first resistor, second resistance it is defeated
Go out the output end of end and the first electric capacity, after the input of the input of the second resistance and the first electric capacity is intersecting one is connected
The output end of the first Zener diode, the input of first Zener diode is connected with the port 2 of U25 transformers；
The input of the first resistor is connected with the VDD interfaces of U22 master control PWM chips；
The FB interfaces of the U22 master controls PWM chip connect the port 1 of the second coupler, and the port 2 of the second coupler connects public affairs
Altogether, and between the port 1 and port 2 of the second coupler one second electric capacity is connected；The port 4 of second coupler connects
The negative electrode of one controllable accurate source of stable pressure, and the input of one the 3rd electric capacity；The port 3 of second coupler be connected described
The output end of the 3rd electric capacity of the port 4 of the second coupler is connected；
Connect respectively between the port 5 and port 8 of the U25 transformers one second have electrode capacitance, one the 3rd have electrode capacitance,
One the 4th electric capacity, the 5th electric capacity and the 6th electric capacity；All go here and there between 5th electric capacity and the input and output end of the 6th electric capacity
It is associated with inductance.
This circuit design is by arranging U22 master control PWM chips, U25 transformers, the first coupler, the second coupler simultaneously
And first inductance, this kind of inverse-excitation type switch power-supply circuit is simultaneously equipped with microminiature transformer and is capable of achieving wide scope input single-chip microcomputer
Supply voltage is exported, and accomplishes small size, low cost, and the price of U22 master controls PWM chip and EP10 transformers is all very low, this
Circuit realiration wide input range, low cost, can replace expensive wide scope DCDC chip in BMS systems.
Preferably, the anode of the controllable accurate source of stable pressure and with reference to connecting resistance between pole；Controllable accurate source of stable pressure
With reference to pole and the second coupler port 3 and 4 tie point between connect resistance；The port 3 of second coupler is connected with
Resistance；The port 4 of the second coupler connects and is connected with the port 3 of the second coupler after a resistance of connecting after the 3rd electric capacity.
Preferably, there is between the input of electrode capacitance the pole of a voltage stabilizing two of connecting the port 8 of the U25 transformers with second
Pipe, and the input and output end of the Zener diode is also connected in parallel to one including resistance and the parallel circuit of electric capacity.
Preferably, the port 3 of the U25 transformers connects publicly, the connection of port 4 one resistance and one of U25 transformers
It is connected with the input of first resistor after Zener diode.
Preferably, it is connected in parallel between the grid of second metal-oxide-semiconductor and the GND interface lead-out wires of U22 master control PWM chips
There is a resistance circuit.
Preferably, the U25 transformers are EP10 high frequency transformers；Its width x length is 11mm, is highly 11.05mm.
Preferably, the external 3.3V input voltages in the port 1 of first coupler.
Preferably, the RI interfaces of the U22 master controls PWM chip are followed by publicly by a resistance of connecting.
The utility model chooses inverse-excitation type switch power-supply circuit and to be equipped with microminiature transformer single to realize wide scope input
Piece machine supply voltage is exported, and accomplishes small size.
The typical inverse-excitation type switch power-supply circuit that circuit is made up of U22 master controls PWM chip and U25 ultra-small volume transformers.
Input voltage range is 30V-150V, is output as 12V.Wherein transformer U25 chooses EP10 transformers, and width x length is 11mm,
Highly it is 11.05mm.Other elements choose surface mount elements.
Compared with prior art, a kind of BMS inside low cost monolithic machine power supply circuits 1 of the utility model are by arranging simultaneously
U22 master control PWM chips, U25 transformers, the first coupler, the second coupler and the first inductance, this kind of inverse-excitation type switch power-supply
Circuit is simultaneously equipped with the i.e. achievable wide scope input single-chip microcomputer supply voltage output of microminiature transformer, and accomplish small size, low
The price of cost, U22 master controls PWM chip and EP10 transformers is all very low, this circuit realiration wide input range, and low cost can
To replace expensive wide scope DCDC chip in BMS systems.
Above-described the utility model embodiment, does not constitute the restriction to the utility model protection domain.It is any
Modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in the utility model
Claims within.
Claims (8)
1. a kind of BMS inside low cost monolithic machine power supply circuits, it is characterised in that：Including U22 master control PWM chips, U25 transformations
Device, the first coupler, the second coupler and the first inductance；
The RI interfaces of the U22 master controls PWM chip, GND interfaces, SENSE interfaces and VDD interfaces connect publicly；U22 master control PWM
The GATE interfaces of chip connect the grid of one first metal-oxide-semiconductor, the source electrode of first metal-oxide-semiconductor and the SENSE of U22 master control PWM chips
Interface lead-out wire connects, and connects jointly publicly；The port 2 of the drain electrode connection U25 transformers of first metal-oxide-semiconductor；U22 master controls
The GND interfaces lead-out wire of PWM chip connects the source electrode of one second metal-oxide-semiconductor, drain electrode first coupler of connection of second metal-oxide-semiconductor
Port 2；
The port 1 of the U25 transformers is connected with the port 4 of the first coupler；And the port 1 of U25 transformers couples with first
The connecting line of device port 4 connects respectively first the input of electrode capacitance, the output end of first resistor, the output end of second resistance
And first electric capacity output end, one first is connected after the input of the input of the second resistance and the first electric capacity is intersecting
The output end of Zener diode, the input of first Zener diode is connected with the port 2 of U25 transformers；
The input of the first resistor is connected with the VDD interfaces of U22 master control PWM chips；
The FB interfaces of the U22 master controls PWM chip connect the port 1 of the second coupler, and the port 2 of the second coupler connects public
Ground, and connect one second electric capacity between the port 1 and port 2 of the second coupler；The connection of port 4 one of second coupler
The negative electrode of controllable accurate source of stable pressure, and the input of one the 3rd electric capacity；The port 3 of second coupler be connected described
The output end of the 3rd electric capacity of the port 4 of two couplers is connected；
Connect respectively between the port 5 and port 8 of the U25 transformers one second have electrode capacitance, one the 3rd have electrode capacitance, one
Four electric capacity, the 5th electric capacity and the 6th electric capacity；All it is in series between 5th electric capacity and the input and output end of the 6th electric capacity
Inductance.
2. a kind of BMS inside low cost monolithic machine power supply circuits as claimed in claim 1, it is characterised in that：The controllable essence
The anode of close source of stable pressure and with reference to connecting resistance between pole；The reference pole of controllable accurate source of stable pressure and the port 3 of the second coupler
Connect resistance and 4 tie point between；The port 3 of second coupler is connected with resistance；The port 4 of the second coupler connects
Connect after 3rd electric capacity and be connected with the port 3 of the second coupler after a resistance.
3. a kind of BMS inside low cost monolithic machine power supply circuits as claimed in claim 1, it is characterised in that：The U25 transformations
There is between the input of electrode capacitance a Zener diode of connecting the port 8 of device with second, and the input of the Zener diode and
Output end is also connected in parallel to one includes the parallel circuit of resistance and electric capacity.
4. as described in claim 1 or 3 a kind of BMS inside low cost monolithic machine power supply circuits, it is characterised in that：The U25
The port 3 of transformer connects publicly, with first resistor after one resistance of connection of port 4 of U25 transformers and a Zener diode
Input be connected.
5. a kind of BMS inside low cost monolithic machine power supply circuits as claimed in claim 1, it is characterised in that：2nd MOS
A resistance circuit is connected in parallel between the grid of pipe and the GND interface lead-out wires of U22 master control PWM chips.
6. a kind of BMS inside low cost monolithic machine power supply circuits as claimed in claim 1, it is characterised in that：The U25 transformations
Device is EP10 high frequency transformers；Its width x length is 11mm, is highly 11.05mm.
7. a kind of BMS inside low cost monolithic machine power supply circuits as claimed in claim 1, it is characterised in that：First coupling
The external 3.3V input voltages in port 1 of clutch.
8. a kind of BMS inside low cost monolithic machine power supply circuits as claimed in claim 1, it is characterised in that：The U22 master controls
The RI interfaces of PWM chip are followed by publicly by a resistance of connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621165385.8U CN206099756U (en) | 2016-10-25 | 2016-10-25 | Inside low -cost singlechip supply circuit of BMS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621165385.8U CN206099756U (en) | 2016-10-25 | 2016-10-25 | Inside low -cost singlechip supply circuit of BMS |
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| Publication Number | Publication Date |
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| CN206099756U true CN206099756U (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621165385.8U Active CN206099756U (en) | 2016-10-25 | 2016-10-25 | Inside low -cost singlechip supply circuit of BMS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428467A (en) * | 2018-09-21 | 2019-03-05 | 广州金升阳科技有限公司 | A kind of super-pressure super wide range power-supply system and its control method |
-
2016
- 2016-10-25 CN CN201621165385.8U patent/CN206099756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109428467A (en) * | 2018-09-21 | 2019-03-05 | 广州金升阳科技有限公司 | A kind of super-pressure super wide range power-supply system and its control method |
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