CN207098660U - power supply circuit for battery management system - Google Patents
power supply circuit for battery management system Download PDFInfo
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- CN207098660U CN207098660U CN201720735365.8U CN201720735365U CN207098660U CN 207098660 U CN207098660 U CN 207098660U CN 201720735365 U CN201720735365 U CN 201720735365U CN 207098660 U CN207098660 U CN 207098660U
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Abstract
The utility model embodiment provides a kind of power supply circuit for battery management system, belongs to power supply field.The power supply circuit includes：Battery powered module, for from battery receptacle electric power, battery powered module includes the first gate-controlled switch, and one end of the first gate-controlled switch is used for the power supply interface for being connected to BMS；Drive module, including the second gate-controlled switch, the closed and disconnected of the second gate-controlled switch can control the closed and disconnected of the first gate-controlled switch；And charger power supply module, for receiving electric power from charger and being powered to BMS, the output end of charger power supply module is connected to one end of the first gate-controlled switch.The power supply circuit can realize reverse-filling of the charger power supply to battery, avoid the charger power pack in charging electric vehicle and start other equipment, in addition, power supply circuit provided by the utility model can reduce power consumption of the power supply circuit in power supply process.
Description
Technical field
Power supply field is the utility model is related to, more particularly to a kind of power supply circuit for battery management system.
Background technology
Electric automobile is greatly developed with its environmental protection with the advantage saved.Electric automobile is typically made using lithium battery group
For power resources, because the anti-abuse of lithium battery is poor, in lithium battery group in actual use, battery management is required to
System (Battery Management System, BMS) is detected and managed to it.
In electric automobile actual moving process, with the issue of charging new national standard, BMS has three power supply interfaces, including
Normalizing power supply, fast charge power supply interface and the trickle charge power supply interface of vehicle-mounted lead-acid battery, are typically adopted during electric automobile during traveling
Powered with normalizing, and then typically using fast charge power supply and trickle charge power supply in charging process.In particular for Power Control part
Power supply circuit (general control charge and discharge electrical relay), it is necessary to do reverse-filling measure, otherwise may result in charging, light
By the battery-powered other equipment of vehicle mounted electric, such as the equipment of entire car controller and electric machine controller etc.Conventional reverse-filling one
As using diode realize that but diode, in practical work process, power consumption is larger, does not meet the requirement of low-power consumption.
Utility model content
The purpose of the utility model embodiment is to provide a kind of power supply circuit for BMS, and the power supply circuit can be real
Existing charger power supply avoids in charging electric vehicle charger power pack to by car to the battery-powered reverse-filling of vehicle mounted electric
Carry battery powered other equipment power supply.
To achieve these goals, the utility model embodiment provides a kind of power supply circuit for BMS, and its feature exists
In power supply circuit includes：
Battery powered module, for including the first gate-controlled switch from battery receptacle electric power, battery powered module, first is controllable
One end of switch is used for the power supply interface for being connected to BMS；
Drive module, including the second gate-controlled switch, the closed and disconnected of the second gate-controlled switch can control first controllable to open
The closed and disconnected of pass；And
Charger power supply module, for receiving electric power and to power supply for electrical equipment from charger, charger power supply module
Output end is connected to one end of the first gate-controlled switch.
Alternatively, the first gate-controlled switch can be metal-oxide semiconductor (MOS) (Metal Oxide Semiconductor,
MOS) field-effect transistor (metal-oxide-semiconductor).
Alternatively, the battery powered module can also include the 3rd gate-controlled switch, and the 3rd gate-controlled switch is metal-oxide-semiconductor, should
The grid and source electrode of first gate-controlled switch are connected with the grid and source electrode of the 3rd gate-controlled switch respectively.
Alternatively, battery powered module can also include：It is connected between drain electrode and the earth terminal of the 3rd gate-controlled switch
First electric capacity；And/or it is connected to the second electric capacity between the source electrode and grid of the 3rd gate-controlled switch.
Alternatively, the battery powered module can also include the be connected between the grid and source electrode of the first gate-controlled switch
One voltage-regulator diode, the positive pole of first voltage-regulator diode are connected with the grid of the first gate-controlled switch, first voltage-regulator diode
Negative pole be connected with the source electrode of the first gate-controlled switch.
Alternatively, second gate-controlled switch is metal-oxide-semiconductor, the drain electrode of second gate-controlled switch and the grid of the first gate-controlled switch
Connection.
Alternatively, the drive module can also include：First triode, the base stage of first triode, which is used to receive, to be switched
Control signal；Second triode, the base stage of second triode are connected with the colelctor electrode of the first triode, second triode
Colelctor electrode is connected with the grid of second gate-controlled switch.
Alternatively, the drive module can also include being connected between the source electrode and grid of the second gate-controlled switch second steady
Diode is pressed, the positive pole of second voltage-regulator diode is connected with the source electrode of the second gate-controlled switch, and second voltage-regulator diode is born
Pole is connected with the grid of the second gate-controlled switch.
Alternatively, the charger power supply module can include metal-oxide-semiconductor, and the drain electrode of the metal-oxide-semiconductor is used to be connected with charger, should
The source electrode of metal-oxide-semiconductor is connected with one end of the first gate-controlled switch.
Alternatively, the 3rd voltage-regulator diode is connected between the grid and source electrode of metal-oxide-semiconductor, the 3rd voltage-regulator diode is just
The grid of pole and metal-oxide-semiconductor connects, and the negative pole of the 3rd voltage-regulator diode and the source electrode of metal-oxide-semiconductor connect.
Pass through above-mentioned technical proposal, the power supply circuit provided by the utility model for battery management system BMS can be
During charging electric vehicle, prevent charger power pack from pouring in down a chimney on-vehicle battery part, avoid at this moment to by vehicle mounted electric
Battery-powered power supply for electrical equipment.Further, since the reverse-filling of the power supply circuit employs the circuit design based on metal-oxide-semiconductor,
The power consumption of power supply circuit itself can be reduced, has saved the energy.
The further feature and advantage of the utility model embodiment will give in detail in subsequent specific embodiment part
Explanation.
Brief description of the drawings
Accompanying drawing is that the utility model embodiment is further understood for providing, and one of constitution instruction
Point, it is used to explain the utility model embodiment together with following embodiment, but do not form to the utility model
The limitation of embodiment.In the accompanying drawings：
Fig. 1 is the structured flowchart according to the power supply circuit for BMS of an embodiment of the present utility model；
Fig. 2 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model；
Fig. 3 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model；
Fig. 4 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model；
Fig. 5 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model；And
Fig. 6 is the structured flowchart according to the electric supply installation for BMS of an embodiment of the present utility model.
Description of reference numerals
1st, battery powered module 2, drive module
3rd, charger power supply module 4, processor
Q1, the first gate-controlled switch Q2, the second gate-controlled switch
Q3, the 3rd gate-controlled switch Q4, the 4th gate-controlled switch
Q5, the first triode Q6, the second triode
C1, the first electric capacity C2, the second electric capacity
C3, the 3rd electric capacity C4, the 4th electric capacity
R1, first resistor R2, second resistance
R3,3rd resistor R4, the 4th resistance
R5, the 5th resistance R6, the 6th resistance
R7, the 7th resistance R8, the 8th resistance
R9, the 9th resistance D1, the first voltage-regulator diode
D2, the second voltage-regulator diode D3, the 3rd voltage-regulator diode
Embodiment
The embodiment of the utility model embodiment is described in detail below in conjunction with accompanying drawing.It should be understood that
It is specific embodiment described herein is merely to illustrate and explains the utility model embodiment, is not limited to this
Utility model embodiment.
Fig. 1 is the structured flowchart according to the power supply circuit for BMS of an embodiment of the present utility model.Such as Fig. 1 institutes
Show, the power supply circuit can include：
Battery powered module 1, for from battery receptacle electric power.The battery powered module 1 can include the first gate-controlled switch
Q1, first gate-controlled switch Q1 one end are used for the power supply interface for connecting BMS.The battery can be Vehicular accumulator cell.
Drive module 2, the drive module 2 can include the second gate-controlled switch Q2.Second gate-controlled switch Q2 closure and
The first gate-controlled switch Q1 closed and disconnected can be controlled by disconnecting；And
Charger power supply module 3, for from charger receive electric power and to BMS power, the charger power supply module 3 it is defeated
Go out one end being connected with BMS power supply interfaces that end may be coupled to the first gate-controlled switch Q1.
First gate-controlled switch Q1 and/or the second gate-controlled switch Q2 example can include：Triode, metal-oxide-semiconductor or insulated gate
Bipolar transistor (Insulated Gate Bipolar Transistor, IGBT).Preferably, the first gate-controlled switch Q1 and/
Or second gate-controlled switch Q2 can be metal-oxide-semiconductor.
Fig. 2 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model.In this reality
With in a new embodiment, battery powered module 1 can also include the 3rd gate-controlled switch Q3.3rd gate-controlled switch Q3's
Example can include：Triode, metal-oxide-semiconductor or IGBT.Preferably, the 3rd gate-controlled switch Q3 can be metal-oxide-semiconductor.Shown in Fig. 2
A kind of example of circuit structure of battery powered module 1.As shown in Fig. 2 the first gate-controlled switch Q1 and the 3rd gate-controlled switch Q3 can
Think the metal-oxide-semiconductor of P-channel, but not limited to this, it will be appreciated by those skilled in the art that the metal-oxide-semiconductor of such as N-channel is also applicable
's.First gate-controlled switch Q1 grid and source electrode is connected with the 3rd gate-controlled switch Q3 grid and source electrode respectively, therefore, when first
When gate-controlled switch Q1 is turned on, the 3rd gate-controlled switch Q3 is also switched on；Conversely, when the 3rd gate-controlled switch Q3 is turned on, the first control switch
Q1 is also switched on；Both disconnection mechanism is similar to conduction mechanism, will not be repeated here.When the second gate-controlled switch Q2 is turned on, the
One gate-controlled switch Q1 and the 3rd gate-controlled switch Q3 are also switched on, and now, battery powered module 1 is connected with BMS power supply interface, battery
Powered by battery powered module 1 to BMS.When the second gate-controlled switch Q2 disconnects, the first gate-controlled switch Q1 and the 3rd is controllable to be opened
Close Q3 to disconnect, now, battery powered module 1 and BMS power supply interface disconnects.Alternatively, or in addition, the battery powered
Module 1 can also include：The first electric capacity C1 for being connected between the 3rd gate-controlled switch Q3 drain electrode and earth terminal and/or it is connected to
The second electric capacity C2 between 3rd gate-controlled switch Q3 source electrode and grid.The first electric capacity C1 and the second electric capacity C2 can be used for pair
It is filtered from the voltage of battery input.In the present embodiment, the battery powered module 1 can also include be connected to first can
The first voltage-regulator diode D1 between control switch Q1 grid and source electrode, first voltage-regulator diode D1 positive pole and first controllable
Q1 grid connection is switched, first voltage-regulator diode D1 negative pole is connected with the first gate-controlled switch Q1 source electrode, for protecting
First gate-controlled switch Q1 and the 3rd gate-controlled switch Q3, prevent the first gate-controlled switch Q1 and the 3rd gate-controlled switch Q3 grid and source electrode
Between voltage difference it is excessive, there is the phenomenon that metal-oxide-semiconductor burns.Meanwhile it can also reduce by first using the first voltage-regulator diode D1
Power consumption between gate-controlled switch Q1 and the 3rd gate-controlled switch Q3 grids and source electrode.Between the first gate-controlled switch Q1 source electrode and grid
First resistor R1 can also be serially connected with, first resistor R1 is used for the grid for the first gate-controlled switch Q1 (and the 3rd gate-controlled switch Q3)
Voltage bias is provided between pole and source electrode.In the present embodiment, first resistor R1 resistance can be, for example, 47 kilo-ohms.This
The 9th resistance R9 can also be connected between one gate-controlled switch Q1 grid and the second gate-controlled switch Q2, the 9th resistance R9 can be with
For partial pressure.9th resistance R9 resistance can be, for example, 10 kilo-ohms.
Although the specific component and circuit structure of battery powered module 1, those skilled in the art are shown in Fig. 2
It is appreciated that Fig. 2 is illustrated that the example of battery powered module 1, thus battery powered module 1 be not limited to it is specific shown in Fig. 2
Example.
Fig. 3 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model.In this reality
With in a new embodiment, as shown in figure 3, drive module 2 can also include：First triode Q5 and the second triode
Q6.First triode Q5 base stage is used to pass through control signal interface switch controlling signal, for example, from processor (such as
Single-chip microcomputer) receive switch controlling signal (such as high level and low level), first triode Q5 grounded emitter.This first
Second resistance R2 is serially connected between triode Q5 emitter stage and base stage, second resistance R2 is used for the base for the first triode Q5
Voltage bias is provided between pole and emitter stage, second resistance R2 can be, for example, 47 kilo-ohms.First triode Q5 base stage
Control signal can also be received by 3rd resistor R3,3rd resistor R3 resistance can be, for example, 4.7 kilo-ohms.Two or three pole
Pipe Q6 base stage is connected with the first triode Q5 colelctor electrode.Second triode Q6 base stage and the first triode Q5 current collection
The 4th resistance R4 can be serially connected between pole, the 4th resistance Q4 resistance can be, for example, 4.7 kilo-ohms.Second triode Q6's
The 5th resistance R5 can be serially connected between base stage and emitter stage, the 5th resistance R5 is used for base stage and hair for the second triode Q6
Voltage bias is provided between emitter-base bandgap grading, the 5th resistance R5 can select such as 47 kilo-ohms of resistance.Second triode Q6 transmitting
Positive voltage (such as+5V) can extremely be connect.
Although figure 3 illustrates the first triode Q5 be NPN type triode, it will be appreciated by those skilled in the art that
PNP type triode is also applicatory.Equally, figure 3 illustrates the second triode Q6 be PNP type triode, but ability
Field technique personnel are appreciated that NPN type triode is also applicatory.It can be wrapped in addition, though figure 3 illustrates drive module 2
Two triodes are included, but it will be appreciated by those skilled in the art that drive module 2 can include more or less triodes.
As shown in figure 3, the second gate-controlled switch Q2 can be the metal-oxide-semiconductor of N-channel, second triode Q6 colelctor electrode and the
Two gate-controlled switch Q2 grid connection.It can be gone here and there between second triode Q6 colelctor electrode and the second gate-controlled switch Q2 grid
The 6th resistance R6 is connected to, the 6th resistance R6 resistance may, for example, be 1 kilo-ohm.In addition, second triode Q6 colelctor electrode
The 7th resistance R7 can be serially connected between the second gate-controlled switch Q2 source electrode, the 7th resistance R7 resistance may, for example, be 20
Kilo-ohm.Second gate-controlled switch Q2 source electrode can be grounded.7th resistance R7 can be used for for the second gate-controlled switch Q2 grid and
Source electrode provides voltage bias.In the present embodiment, the drive circuit 2 can also include the grid for being connected to the second gate-controlled switch Q2
The 3rd electric capacity C3 between pole and source electrode, for filtering.In the present embodiment, second gate-controlled switch Q2 grid and source electrode
Between be also associated with the second voltage-regulator diode D2, second voltage-regulator diode D2 positive pole and the second gate-controlled switch Q2 source electrode connect
Connect, the second voltage-regulator diode D2 negative pole is connected with the second gate-controlled switch Q2 grid, for limiting the second gate-controlled switch Q2's
Voltage between grid and source electrode, avoid damaging the second gate-controlled switch Q2, such design can also reduce the second gate-controlled switch
Power consumption between Q2 grid and source electrode.
When such as processor 4 (such as single-chip microcomputer) (such as by control signal interface) output first switch control signal
(such as high level) to the first triode Q5 base stage when, between the first triode Q5 base stage and emitter stage produce bias, because
This first triode Q5 collector and emitter conducting so that the 5th resistance R5 has electric current to flow through, therefore in the second triode
Bias is produced between Q6 base stage and emitter stage so that the second triode Q6 collector and emitter conducting.Thus, electric current stream
The 7th resistance R7 is crossed, therefore bias is produced between the second gate-controlled switch Q2 grid and source electrode so that the second gate-controlled switch Q2's
Drain electrode and source conduction, the first gate-controlled switch Q1 is caused to close.On the contrary, ought base stage from such as processor to the first triode Q5 it is defeated
When going out second switch control signal (such as low level), the second gate-controlled switch Q2 disconnects, and causes the first gate-controlled switch Q1 also to disconnect.
Although showing the specific component and circuit structure of drive module 2 in Fig. 3, those skilled in the art can be with
Understand, Fig. 3 is illustrated that the example of drive module 2, therefore drive module 2 is not limited to the specific example shown in Fig. 3.
Fig. 4 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model.In this reality
With in a new embodiment, as shown in figure 4, charger power supply module 3 can include the 4th gate-controlled switch Q4.4th can
Control switch Q4 example can include：Triode, metal-oxide-semiconductor or IGBT.Preferably, the 4th gate-controlled switch Q4 can be metal-oxide-semiconductor.More
Preferably, the 4th gate-controlled switch Q4 can be the metal-oxide-semiconductor of P-channel, it will be recognized to those skilled in the art that N-channel
Metal-oxide-semiconductor is also applicatory.4th gate-controlled switch Q4 drain electrode can be connected with the positive pole of charger (such as to be shown in Fig. 4
OBC+12V), the 4th gate-controlled switch Q4 grid can be grounded, and the 4th gate-controlled switch Q4 source electrode can be with BMS confession
Electrical interface (or the first gate-controlled switch Q1 output end) connects.It is connected between 4th gate-controlled switch Q4 drain electrode and earth terminal
4th electric capacity C4, the 4th electric capacity C4 are used to be filtered the electric current inputted from charger.4th gate-controlled switch Q4 source
It is connected with the 3rd voltage-regulator diode D3 between pole and grid, the 3rd voltage-regulator diode D3 positive pole and the 4th gate-controlled switch Q4's
Grid connects, and the 3rd voltage-regulator diode D3 negative pole is connected with the 4th gate-controlled switch Q4 source electrode, controllable is opened for limiting the 4th
The voltage swing between Q4 source electrode and grid is closed, protects the 4th gate-controlled switch Q4, meanwhile, reduce the 4th gate-controlled switch Q4's
Energy consumption between source electrode and grid.The 8th resistance R8 is also associated between 4th gate-controlled switch Q4 grid and earth terminal, should
8th resistance R8 resistance can be, for example, 10 kilo-ohms.
Although the specific component and circuit structure of charger power supply module 3, people in the art are shown in Fig. 4
For member it is appreciated that Fig. 4 is illustrated that the example of charger power supply module 3, charger power supply module 3 is not limited to the spy shown in Fig. 4
Fixed example.
Fig. 5 is the structural representation according to the power supply circuit for BMS of an embodiment of the present utility model.Fig. 5 shows
The embodiment of the power supply circuit gone out can include example battery power supply module 1 as shown in Figure 2, example as shown in Figure 3 is driven
Dynamic model block 2 and exemplary charge machine power supply module 3 as shown in Figure 4.
When needing on-vehicle battery to be powered BMS, processor (such as single-chip microcomputer) can be to the first triode Q5's
Base stage exports such as high level, is now turned between the first triode Q5 colelctor electrode and emitter stage so that the second triode Q6
Emitter stage turned on colelctor electrode so that the second gate-controlled switch (metal-oxide-semiconductor) Q2 turn on, then cause the first gate-controlled switch and
3rd gate-controlled switch (metal-oxide-semiconductor) Q1 and Q3 is turned on, and on-vehicle battery is powered to BMS.
When being switched to charger power supply, processor 4 can receive a signal (such as switching signal), receive this
During signal, processor can export such as low level to the first triode Q5 base stage, thus the first triode Q5, the two or three pole
Pipe Q6, the second gate-controlled switch Q2, first and the 3rd gate-controlled switch Q1 and Q3 disconnect, prevent charger to battery-powered by vehicle mounted electric
Equipment is powered, so as to avoid situation about pouring in down a chimney.
In addition, the reverse-filling for the power supply circuit that embodiment of the present utility model provides employs the circuit based on metal-oxide-semiconductor
Design, can reduce the power consumption of power supply circuit itself, save the energy.
Fig. 6 is the structured flowchart according to the electric supply installation for BMS of an embodiment of the present utility model.Such as Fig. 6 institutes
Show, the electric supply installation for BMS can include the power supply circuit and processor 4 of above-mentioned embodiment, and the processor 4 can be by
It is configured to export first switch control signal to drive module when charger does not work, to cause the first gate-controlled switch Q1 to lead
It is logical, and second switch control signal is exported to drive module when charger works, to cause the first gate-controlled switch Q1 to disconnect.
Optional embodiment of the present utility model is described in detail above in association with accompanying drawing, still, the utility model embodiment party
Formula is not limited to the detail in above-mentioned embodiment, can be with the range of the technology design of the utility model embodiment
A variety of simple variants are carried out to the technical scheme of the utility model embodiment, these simple variants belong to the utility model reality
Apply the protection domain of mode.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the utility model is implemented
Mode no longer separately illustrates to various combinations of possible ways.
Claims (10)
1. a kind of power supply circuit for battery management system, it is characterised in that the power supply circuit includes：
Battery powered module (1), for including the first gate-controlled switch from battery receptacle electric power, the battery powered module (1)
(Q1), one end of first gate-controlled switch (Q1) is used for the power supply interface for being connected to the BMS；
Drive module (2), including the second gate-controlled switch (Q2), the closed and disconnected of second gate-controlled switch (Q2) can control
The closed and disconnected of first gate-controlled switch (Q1)；And
Charger power supply module (3), it is described to fill for receiving electric power from charger and being powered to the battery management system BMS
The output end of motor power supply module (3) is connected to described one end of first gate-controlled switch (Q1).
2. power supply circuit according to claim 1, it is characterised in that first gate-controlled switch (Q1) is metal oxide
Semiconductor field effect transistor.
3. power supply circuit according to claim 2, it is characterised in that the battery powered module (1) can also including the 3rd
Control switch (Q3), the 3rd gate-controlled switch (Q3) are mos field effect transistor, and described first controllable opens
The grid and source electrode for closing (Q1) are connected with the grid and source electrode of the 3rd gate-controlled switch (Q3) respectively.
4. power supply circuit according to claim 3, it is characterised in that the battery powered module (1) also includes：
The first electric capacity (C1) being connected between the drain electrode of the 3rd gate-controlled switch (Q3) and earth terminal；And/or
The second electric capacity (C2) being connected between the source electrode and grid of the 3rd gate-controlled switch (Q3).
5. power supply circuit according to claim 3, it is characterised in that the battery powered module is also described including being connected to
The first voltage-regulator diode (D1) between the grid and source electrode of first gate-controlled switch (Q1), first voltage-regulator diode (D1)
Positive pole is connected with the grid of first gate-controlled switch (Q1), and the negative pole and described first of first voltage-regulator diode (D1) can
The source electrode connection of control switch (Q1).
6. power supply circuit according to claim 1, it is characterised in that second gate-controlled switch (Q2) is metal oxide
Semiconductor field effect transistor, the drain electrode of second gate-controlled switch (Q2) and the grid of first gate-controlled switch (Q1) connect
Connect.
7. power supply circuit according to claim 6, it is characterised in that the drive module (2) also includes：
First triode (Q5), the base stage of first triode (Q5) are used to receive switch controlling signal；
Second triode (Q6), the base stage of second triode (Q6) are connected with the colelctor electrode of first triode (Q5),
The colelctor electrode of second triode (Q6) is connected with the grid of second gate-controlled switch (Q2).
8. power supply circuit according to claim 7, it is characterised in that the drive module (2) is also described including being connected to
The second voltage-regulator diode (D2) between the source electrode and grid of second gate-controlled switch (Q2), second voltage-regulator diode (D2)
Positive pole is connected with the source electrode of second gate-controlled switch (Q2), and the negative pole and described second of second voltage-regulator diode (D2) can
The grid connection of control switch (Q2).
9. power supply circuit according to claim 1, it is characterised in that the charger power supply module (3) includes metal oxygen
Compound semiconductor field effect transistor, the drain electrode of the mos field effect transistor are used to connect with charger
Connect, the source electrode of the mos field effect transistor and described one end of first gate-controlled switch (Q1) connect
Connect.
10. power supply circuit according to claim 9, it is characterised in that the metal oxide semiconductor field effect transistor
Be connected with the 3rd voltage-regulator diode (D3) between the source electrode and grid of pipe, the positive pole of the 3rd voltage-regulator diode (D3) with it is described
The grid connection of mos field effect transistor, negative pole and the metal of the 3rd voltage-regulator diode (D3)
The source electrode connection of oxide semiconductor field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720735365.8U CN207098660U (en) | 2017-06-22 | 2017-06-22 | power supply circuit for battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720735365.8U CN207098660U (en) | 2017-06-22 | 2017-06-22 | power supply circuit for battery management system |
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| Publication Number | Publication Date |
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| CN207098660U true CN207098660U (en) | 2018-03-13 |
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| CN201720735365.8U Expired - Fee Related CN207098660U (en) | 2017-06-22 | 2017-06-22 | power supply circuit for battery management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069902A (en) * | 2017-06-22 | 2017-08-18 | 安徽锐能科技有限公司 | power supply circuit for battery management system |
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2017
- 2017-06-22 CN CN201720735365.8U patent/CN207098660U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069902A (en) * | 2017-06-22 | 2017-08-18 | 安徽锐能科技有限公司 | power supply circuit for battery management system |
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Granted publication date: 20180313 |