CN206628884U - A kind of control circuit - Google Patents
A kind of control circuit Download PDFInfo
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- CN206628884U CN206628884U CN201720307344.6U CN201720307344U CN206628884U CN 206628884 U CN206628884 U CN 206628884U CN 201720307344 U CN201720307344 U CN 201720307344U CN 206628884 U CN206628884 U CN 206628884U
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Abstract
The utility model provides a kind of control circuit, and the control circuit includes：Software controlled circuitry, hardware switch circuit and power supply switch circuit；The output end of software controlled circuitry is connected with the control terminal of hardware switch circuit；The output end of hardware switch circuit and the control terminal of power supply switch circuit connect；The output end of power supply switch circuit connects with load；The input of software controlled circuitry is connected with battery；The input of power supply switch circuit is connected with reserve battery；When software controlled circuitry is opened, and battery stops output, hardware switch circuit is opened, and control power supply switch circuit realizes the switching between battery and reserve battery, and reserve battery is load supplying；When software controlled circuitry is closed, hardware switch circuit and power supply switch circuit are stopped.The control circuit controls the access of reserve battery by software controlled circuitry, controls the sneak circuit of backup batteries discharge circuit, reduces the consumption of reserve battery electricity, makes reserve battery normal power supply.
Description
Technical field
Technical field of vehicle control is the utility model is related to, more specifically, more particularly to a kind of control circuit.
Background technology
With the continuous development of new energy car, vehicle-mounted terminal equipment is configured on new energy car, and car-mounted terminal need to expire
Foot can also upload data, and can be used for multiple times in the situation that outside battery feed disconnects in certain time.Cause
This, car-mounted terminal is configured with the reserve battery that can be recycled, and in the case of ensure that outside battery disconnects, car-mounted terminal is also
It can work.
In the prior art, the switching between outside battery and reserve battery is realized by hardware circuit, it is still, vehicle-mounted
Terminal or vehicle production and transport process can continue a period of time grown very much, and in particular circumstances due to no outside battery
It can charge, and reserve battery is as hardware sneak circuit power consumption, power consumption is typically in hundreds of more than uA, then it is prolonged
Power consumption causes electricity to use up and can not be charged in time quickly, and permanent lesion is caused to reserve battery.
So how to reduce the electric current that reserve battery consumes in sneak circuit, and then make reserve battery normal power supply be this
Art personnel's urgent problem to be solved.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of control circuit, the control circuit is controlled by software
Circuit controls the access of reserve battery, is effectively controlled the sneak circuit of backup batteries discharge circuit, reduces reserve battery electricity
The consumption of amount, reach the purpose for making reserve battery normal power supply.
To achieve the above object, the utility model provides following technical scheme：
A kind of control circuit, the control circuit include：Software controlled circuitry, hardware switch circuit and power supply switching electricity
Road；
Wherein, the output end of the software controlled circuitry is connected with the control terminal of the hardware switch circuit；The hardware
The output end of on-off circuit is connected with the control terminal of the power supply switch circuit；The output end of the power supply switch circuit and load
Connection；
The input of the software controlled circuitry is connected with battery；The input and standby electricity of the power supply switch circuit
Pond connects；
When the software controlled circuitry is opened, and the battery stops output, the hardware switch circuit is opened, control
The power supply switch circuit realizes the switching between the battery and the reserve battery, and the reserve battery is the load
Power supply；
When the software controlled circuitry is closed, the hardware switch circuit and the power supply switch circuit are stopped.
Preferably, in above-mentioned control circuit, the control circuit also includes：Protection circuit；The battery passes through institute
The input that protection circuit is stated with the software controlled circuitry is connected；
Wherein, the battery is connected with the input of the protection circuit, the output end of the protection circuit with it is described
The input connection of software controlled circuitry.
Preferably, in above-mentioned control circuit, the protection circuit includes：First diode, the second diode and first
Resistance；
Wherein, the anode of first diode is connected with the battery；The negative electrode of first diode and described
One end of first resistor is connected with the negative electrode of second diode；The anode of second diode and software control electricity
Road connects；The other end ground connection of the first resistor.
Preferably, in above-mentioned control circuit, the software controlled circuitry includes：Second resistance, 3rd resistor and first
Triode；
Wherein, the base stage of one end of the 3rd resistor and first triode sun with second diode respectively
Pole connects；One end of the other end of the 3rd resistor and the second resistance is connected with the emitter stage of first triode；
The other end of the second resistance connects the signal control terminal of the software controlled circuitry；The colelctor electrode of first triode with
The hardware switch circuit connection.
Preferably, in above-mentioned control circuit, the hardware switch circuit includes：4th resistance, the 5th resistance and second
Triode；
Wherein, one end of the 4th resistance is connected with the colelctor electrode of first triode；4th resistance it is another
The base stage of one end and one end of the 5th resistance respectively with second triode is connected；The other end of 5th resistance and
The grounded emitter of second triode；The colelctor electrode of second triode is connected with the power supply switch circuit.
Preferably, in above-mentioned control circuit, the power supply switch circuit includes：6th resistance, the 7th resistance, first
Effect pipe and the second FET；
Wherein, the grid of one end of the 6th resistance and first FET respectively with second triode
Colelctor electrode connects；One end of 7th resistance and the grid of second FET collection with second triode respectively
Electrode connects；The drain electrode of the other end of 6th resistance and the other end and first FET of the 7th resistance point
Drain electrode not with second FET is connected；The source electrode of second FET connects with the load；Described first
The source electrode of FET is connected with the reserve battery.
It can be seen from the above technical proposal that a kind of control circuit provided by the utility model, the control circuit include：
Software controlled circuitry, hardware switch circuit and power supply switch circuit；Wherein, the output end of software controlled circuitry and hardware switch electricity
The control terminal connection on road；The output end of hardware switch circuit and the control terminal of power supply switch circuit connect；Power supply switch circuit
Output end connects with load；The input of software controlled circuitry is connected with battery；The input of power supply switch circuit with it is standby
Battery connects；When software controlled circuitry is opened, and battery stops output, hardware switch circuit is opened, control power supply switching electricity
The switching between battery and reserve battery is realized on road, and reserve battery is load supplying；When software controlled circuitry is closed, hardware
On-off circuit and power supply switch circuit are stopped.
It follows that the control circuit controls hardware switch circuit and power supply switch circuit by software controlled circuitry, have
The discharge circuit for controlling reserve battery of effect, and then control the sneak circuit of backup batteries discharge circuit.
That is, when software controlled circuitry is closed, hardware switch circuit and power supply switch circuit are stopped, no
The switching between battery and reserve battery can be realized, now, the discharge loop of reserve battery is closed mode, then standby electricity
The sneak circuit in pond only exists power supply switch circuit, and then realizes and control reserve battery sneak circuit by software controlled circuitry
Function, effectively reduce the consumption of reserve battery electricity, reach the purpose for making reserve battery normal power supply.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
Fig. 1 is a kind of structural representation for control circuit that the utility model embodiment provides；
Fig. 2 is the structural representation for another control circuit that the utility model embodiment provides.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The utility model embodiment is illustrated in order to more detailed, with reference to Figure of description, to this practicality
The embodiment of new offer is specifically addressed.
With reference to figure 1, Fig. 1 is a kind of structural representation for control circuit that the utility model embodiment provides.
The control circuit includes：Software controlled circuitry 11, hardware switch circuit 12 and power supply switch circuit 13；
Wherein, the output end of the software controlled circuitry 11 is connected with the control terminal of the hardware switch circuit 12；It is described
The output end of hardware switch circuit 12 is connected with the control terminal of the power supply switch circuit 13；The power supply switch circuit 13 it is defeated
Go out end to be connected with load 16；
The input of the software controlled circuitry 11 is connected with battery 14；The input of the power supply switch circuit 13 with
Reserve battery 15 connects；
When the software controlled circuitry 11 is opened, and the battery 14 stops output, the hardware switch circuit 12 is beaten
Open, control the power supply switch circuit 13 to realize the switching between the battery 14 and the reserve battery 15, it is described standby
Battery 15 is the power supply of load 16；
When the software controlled circuitry 11 is closed, the hardware switch circuit 12 and the power supply switch circuit 13 stop
Work.
Specifically, the software controlled circuitry 11, the hardware switch circuit 12 and the power supply switch circuit 13 are formed
The discharge loop of the reserve battery 15, by way of software control, the software controlled circuitry 11 is controlled, realizes the storage
Switching between battery 14 and the reserve battery 15.
Also, from the foregoing, it will be observed that when the software controlled circuitry 11 is closed, the hardware switch circuit 12 and the power supply
Switching circuit 13 is stopped, i.e., can not realize the switching between the battery 14 and the reserve battery 15, now described
The discharge loop of reserve battery 15 is closed mode.
For the prior art that compares, the sneak circuit of the reserve battery 15 is effectively controlled, the reserve battery
15 sneak circuit only only exists the power supply switch circuit 13, so realize controlled by software controlled circuitry 11 it is standby
The function of the sneak circuit of battery 15, effectively reduces the consumption of the electricity of reserve battery 15, and reaching makes reserve battery 15 normally supply
The purpose of electricity.
Based on above-described embodiment, in another embodiment of the utility model, as shown in figure 1, the control circuit also includes：
Protection circuit 17；The battery 14 is connected by the protection circuit 17 with the input of the software controlled circuitry 11；
Wherein, the battery 14 is connected with the input of the protection circuit 17, the output end of the protection circuit 17
It is connected with the input of the software controlled circuitry 11.
Specifically, the protection circuit 17 is used to protect the control circuit, and it is the software controlled circuitry 11, described hard
Part on-off circuit 12, the protection circuit 17 and the power supply switch circuit 13 form the discharge loop of the reserve battery 15.
Based on above-described embodiment, in another embodiment of the utility model, with reference to figure 2, Fig. 2 is the utility model embodiment
The structural representation of another control circuit of offer.
The protection circuit 17 includes：First diode D1, the second diode D2 and first resistor R1；
Wherein, the anode of the first diode D1 is connected with the battery 14；The negative electrode of the first diode D1
And one end of the first resistor R1 is connected with the negative electrode of the second diode D2；The anode of the second diode D2 and institute
Software controlled circuitry 11 is stated to connect；The other end ground connection of the first resistor R1.
Based on above-described embodiment, in another embodiment of the utility model, as shown in Fig. 2 the software controlled circuitry 11
Including：Second resistance R2,3rd resistor R3 and the first triode Q1；
Wherein, one end of the 3rd resistor R3 and the first triode Q1 base stage respectively with second diode
D2 anode connection；The other end of the 3rd resistor R3 and the second resistance R2 one end are with the first triode Q1's
Emitter stage connects；The other end of the second resistance R2 connects the signal control terminal MCU_CTL of the software controlled circuitry 11；Institute
The colelctor electrode for stating the first triode Q1 is connected with the hardware switch circuit 12.
It should be noted that the signal control terminal MCU_CTL of the software controlled circuitry 11 is to pass through Remote configuration software
Mode receive teleinstruction selection open or close the software controlled circuitry 11.
Based on above-described embodiment, in another embodiment of the utility model, as shown in Fig. 2 the hardware switch circuit 12
Including：4th resistance R4, the 5th resistance R5 and the second triode Q2；
Wherein, one end of the 4th resistance R4 is connected with the colelctor electrode of the first triode Q1；4th resistance
Base stage of the R4 other end and the 5th resistance R5 one end respectively with the second triode Q2 is connected；5th resistance
The grounded emitter of the R5 other end and the second triode Q2；The colelctor electrode of the second triode Q2 is cut with the power supply
Circuit 13 is changed to connect.
Based on above-described embodiment, in another embodiment of the utility model, as shown in Fig. 2 the power supply switch circuit 13
Including：6th resistance R6, the 7th resistance R7, the first FET Q3 and the second FET Q4；
Wherein, one end of the 6th resistance R6 and the first FET Q3 grid respectively with the two or three pole
Pipe Q2 colelctor electrode connection；One end of the 7th resistance R7 and the second FET Q4 grid are respectively with described second
Triode Q2 colelctor electrode connection；The other end of the 6th resistance R6 and the other end and described first of the 7th resistance R7
Drain electrode of the FET Q3 drain electrode respectively with the second FET Q4 is connected；The source electrode of the second FET Q4 with
The connection of load 16；The source electrode of the first FET Q3 is connected with the reserve battery 15.
Only illustrated by way of example it should be noted that load 16 described in Fig. 2 is electric capacity C1, and it is described standby
Represented in fig. 2 with Back-battery with battery 15, the battery 14 is represented with U batteries 12V in fig. 2, the equal tables of GND
Grounding connection is shown as, in the utility model embodiment and is not construed as limiting.
Illustrated with reference to above-mentioned whole embodiments, during car-mounted terminal or vehicle production and transport, in certain environment
Under, no battery 14 can be charged, and forbidden energy is received by the signal control terminal MCU_CTL of the software controlled circuitry 11
Signal, by the emitter stage of the signal control terminal MCU_CTL forbidden energy, now the first triode Q1 of the software controlled circuitry 11
It is zero, and because the battery 14 disconnects, makes the first triode Q1 be closed mode, and then second triode
Q2, the first FET Q3 and the second FET Q4 are similarly closed mode, the electric discharge of the reserve battery 15
Loop is closed mode, and the reserve battery 15 is without access electric power system, and now as shown in Figure 2, the reserve battery 15 is put
Electricity only only has the first FET Q3 and the second FET Q4 leakage current in the electric current of sneak circuit consumption,
It is identical substantially with the leakage current of the reserve battery 15 itself and the leakage current is up to 20uA, and then it is effectively reduced institute
State the consumption of the electricity of reserve battery 15.
When vehicle launch connection cloud platform service, communicated between car-mounted terminal and cloud platform, pass through Remote configuration
The mode of software assigns configuration-direct, when the car-mounted terminal is started every time, the signal control terminal of the software controlled circuitry 11
MCU_CTL exports high level, and because battery 14 is off-state, the emitter voltage of the first triode Q1 is more than base stage
Voltage, the first triode Q1 conductings output high level, after the 4th resistance R4 and the 5th resistance R5 partial pressures,
The base voltage of the second triode Q2 is high level, due to the grounded emitter of the second triode Q2, therefore it is described
Second triode Q2 base voltage is more than emitter voltage, and the second triode Q2 exports low level, and due to described
Second triode Q2 colelctor electrode is connected with the grid of the first FET Q3 and the grid of the second FET Q4,
And then the grid voltage of the first FET Q3 is less than source voltage, the grid voltage of the second FET Q4 is less than
Source voltage, the first FET Q3 and the second FET Q4 conductings, the reserve battery 15 is the load
16 power supplies, realize the switching between the battery 14 and the reserve battery 15.
Also, during when the not enough power supply of the reserve battery 15 to support that 16 circuits of the load work, the software control
The signal control terminal MCU_CTL of circuit 11 processed is unable to normal output voltage, the signal control terminal MCU_CTL forbidden energy, and described first
Triode Q1, the second triode Q2, the first FET Q3 and the second FET Q4 are closed mode,
The reserve battery 15 is being reduced on the premise of sneak circuit consumes, also ensure that the reserve battery 15 will not be under-voltage
During be continuously the power supply of load 16, and then solve the risk problem of 15 under-voltage electric discharge of reserve battery.
The utility model embodiment is illustrated with reference to actual scene, for example, when the letter of the software controlled circuitry 11
Number control terminal MCU_CTL exports the transmitting of 3.3V voltages, now the first triode Q1 when each car-mounted terminal starts
Pole tension is 3.3V, and because the battery 14 is off-state, the base voltage of the first triode Q1 is less than 0.7V, by
This understands that the emitter voltage of the first triode Q1 is more than the base voltage, the first triode Q1 conductings output
High level, and voltage is more than 2V, after the 4th resistance R4 and the 5th resistance R5 partial pressure, second triode
Q2 base voltage is high level, due to the grounded emitter of the second triode Q2, therefore the second triode Q2
Base voltage is more than emitter voltage, the second triode Q2 conductings output low level, and voltage is less than 0.7V, and due to
The colelctor electrode of the second triode Q2 and the grid of the first FET Q3 and the grid of the second FET Q4
Connection, and then the grid voltage of the first FET Q3 is less than source voltage, the grid electricity of the second FET Q4
Pressure is less than source voltage, the first FET Q3 and the second FET Q4 conductings, and the reserve battery 15 is institute
The power supply of load 16 is stated, realizes the switching between the battery 14 and the reserve battery 15.
It follows that a kind of control circuit provided by the utility model, by using the mode of Remote configuration software, passes through
Control software control circuit, the access and disconnection of realization control reserve battery, the electric discharge for being effectively controlled reserve battery are potential
Path, reduces the consumption of reserve battery electricity, and then ensures do not have battery to fill during car-mounted terminal or carload freight
In the case of electricity, reserve battery can normal consumption electricity, it is therefore prevented that and reserve battery excessively feeds and then damages reserve battery, and
Solves the risk problem of the under-voltage electric discharge of reserve battery.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (6)
1. a kind of control circuit, it is characterised in that the control circuit includes：Software controlled circuitry, hardware switch circuit and electricity
Source switching circuit；
Wherein, the output end of the software controlled circuitry is connected with the control terminal of the hardware switch circuit；The hardware switch
The output end of circuit is connected with the control terminal of the power supply switch circuit；The output end of the power supply switch circuit connects with load
Connect；
The input of the software controlled circuitry is connected with battery；The input of the power supply switch circuit connects with reserve battery
Connect；
When the software controlled circuitry is opened, and the battery stops output, the hardware switch circuit is opened, described in control
Power supply switch circuit realizes the switching between the battery and the reserve battery, and the reserve battery supplies for the load
Electricity；
When the software controlled circuitry is closed, the hardware switch circuit and the power supply switch circuit are stopped.
2. control circuit according to claim 1, it is characterised in that the control circuit also includes：Protection circuit；It is described
Battery is connected by the protection circuit with the input of the software controlled circuitry；
Wherein, the battery is connected with the input of the protection circuit, the output end of the protection circuit and the software
The input connection of control circuit.
3. control circuit according to claim 2, it is characterised in that the protection circuit includes：First diode, second
Diode and first resistor；
Wherein, the anode of first diode is connected with the battery；The negative electrode of first diode and described first
One end of resistance is connected with the negative electrode of second diode；The anode of second diode connects with the software controlled circuitry
Connect；The other end ground connection of the first resistor.
4. control circuit according to claim 3, it is characterised in that the software controlled circuitry includes：Second resistance,
Three resistance and the first triode；
Wherein, anode of the base stage of one end of the 3rd resistor and first triode respectively with second diode connects
Connect；One end of the other end of the 3rd resistor and the second resistance is connected with the emitter stage of first triode；It is described
The other end of second resistance connects the signal control terminal of the software controlled circuitry；The colelctor electrode of first triode with it is described
Hardware switch circuit connects.
5. control circuit according to claim 4, it is characterised in that the hardware switch circuit includes：4th resistance,
Five resistance and the second triode；
Wherein, one end of the 4th resistance is connected with the colelctor electrode of first triode；The other end of 4th resistance
And base stage of the one end of the 5th resistance respectively with second triode is connected；The other end of 5th resistance and described
The grounded emitter of second triode；The colelctor electrode of second triode is connected with the power supply switch circuit.
6. control circuit according to claim 5, it is characterised in that the power supply switch circuit includes：6th resistance,
Seven resistance, the first FET and the second FET；
Wherein, the grid of one end of the 6th resistance and first FET current collection with second triode respectively
Pole connects；One end of 7th resistance and the grid of second FET colelctor electrode with second triode respectively
Connection；The drain electrode of the other end of 6th resistance and the other end and first FET of the 7th resistance respectively with
The drain electrode connection of second FET；The source electrode of second FET connects with the load；First effect
Should the source electrode of pipe be connected with the reserve battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307344.6U CN206628884U (en) | 2017-03-27 | 2017-03-27 | A kind of control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307344.6U CN206628884U (en) | 2017-03-27 | 2017-03-27 | A kind of control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206628884U true CN206628884U (en) | 2017-11-10 |
Family
ID=60208377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720307344.6U Active CN206628884U (en) | 2017-03-27 | 2017-03-27 | A kind of control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206628884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286237A (en) * | 2018-11-12 | 2019-01-29 | 艾体威尔电子技术(北京)有限公司 | A kind of circuit for controlling the access of low-power consumption backup battery or being detached from |
-
2017
- 2017-03-27 CN CN201720307344.6U patent/CN206628884U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286237A (en) * | 2018-11-12 | 2019-01-29 | 艾体威尔电子技术(北京)有限公司 | A kind of circuit for controlling the access of low-power consumption backup battery or being detached from |
| CN109286237B (en) * | 2018-11-12 | 2024-03-22 | 艾体威尔电子技术(北京)有限公司 | Circuit for controlling low-power-consumption backup battery to be connected or disconnected |
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Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 8 / F, block B, No. 11, Anxiang Beili, Chaoyang District, Beijing 100101 Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |