CN106166990B - A kind of startup power supply circuit - Google Patents
A kind of startup power supply circuit Download PDFInfo
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- CN106166990B CN106166990B CN201610709418.9A CN201610709418A CN106166990B CN 106166990 B CN106166990 B CN 106166990B CN 201610709418 A CN201610709418 A CN 201610709418A CN 106166990 B CN106166990 B CN 106166990B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of startup power supply circuits, including：Microcontroller, voltage detecting circuit, internal resistance detection circuit and controllable switch circuit, when installing automobile storage battery in automobile, the present invention can detecte the internal resistance of automobile storage battery, storage battery electricity and storage battery health status, and, microcontroller can also make automobile energy storage element output starting current starting automobile by control controllable switch circuit conducting.It can thus be appreciated that, startup power supply circuit disclosed by the invention has the function of starting automobile simultaneously and detects automobile storage battery parameter, therefore, when automobile storage battery can not provide starting current, the present invention can also detect the relevant parameter of automobile storage battery while providing starting current, the detection to automobile storage battery failure is realized, to solve the problems, such as that existing artificial investigation failure is time-consuming and laborious, checks low efficiency.
Description
Technical field
The present invention relates to automobile technical fields, more specifically, being related to a kind of startup power supply circuit.
Background technique
Automobile storage battery is also known as automobile storage battery, powerful starting electricity can be provided to engine in vehicle launch engine
Stream.When automobile storage battery leads to not provide starting current for vehicle for some reason, automobile starting power supply will replace vapour
Automobile battery carries out starting sparking to automobile.
There are many reason of automobile storage battery can not provide starting current for vehicle, for example, automobile storage battery not enough power supply, automobile
The health status of storage battery goes wrong, and generally requires the failure that related maintenance personal checks automobile storage battery in the prior art
The reason of, troubleshooting procedure is time-consuming and laborious, checks low efficiency.
Summary of the invention
In view of this, the present invention discloses a kind of startup power supply circuit, it is former to solve existing artificial investigation automobile storage battery failure
The problem of cause, time-consuming and laborious and investigation low efficiency.
A kind of startup power supply circuit, including：
Microcontroller has multiple signal acquisition ports and multiple signal control ports；
The voltage detecting circuit that input terminal is connect with automobile storage battery anode, the output end of the voltage detecting circuit with it is described
The voltage signal acquisition port of microcontroller connects, the voltage signal acquisition port be used to acquire automobile it is inactive when automobile
Automobile storage battery voltage when battery voltage and automobile starting, wherein the voltage signal acquisition port is that the multiple signal is adopted
Collect one in port；
Input terminal is connect with the automobile storage battery anode, and ground terminal connects the internal resistance detection circuit of automobile storage battery negative terminal, institute
The output end for stating internal resistance detection circuit connects the current signal acquisition port of the microcontroller, and the current signal acquires port
For acquiring electric current when automobile storage battery electric discharge, wherein current signal acquisition port is the multiple signal acquisition port
In one；
Input terminal is connect with the common end of automobile energy storage element and the microcontroller, and output end and the automobile storage battery are just
The controllable switch circuit of connection is held, the control terminal of the controllable switch circuit connects the first signal control terminal of the microcontroller
Mouthful, the first signal control port is used to export the conductivity control signal for controlling the controllable switch circuit conducting, wherein institute
Stating the first signal control port is one in the multiple signal control port；
The second signal control port of the microcontroller is used for when the microcontroller detects the automobile storage battery,
Export automobile storage battery electricity of the microcontroller according to automobile storage battery voltage of automobile when inactive, the automobile starting when
Internal resistance, storage battery electricity and the storage battery health status for the automobile storage battery that pressure and the electric current obtain, wherein the second signal
Control port is one in the multiple signal control port.
Preferably, further include：
It is connect with the second signal control port, for the internal resistance, the storage battery electricity and storage battery health
The display circuit that situation is shown.
Preferably, the voltage detecting circuit includes：First partial pressure branch, the second partial pressure branch and first capacitor device；
One end of the first partial pressure branch connects the automobile storage battery anode, and the other end of the first partial pressure branch is logical
Cross the second partial pressure branch connection ground terminal；
The first capacitor device is connected in the both ends of the second partial pressure branch, the first partial pressure branch, described in parallel
Second partial pressure branch connects the voltage signal acquisition port with the common end of the first capacitor device.
Preferably, the controllable switch circuit includes：Relay, diode, first switch tube, first resistor and the second electricity
Resistance；
One end of the normally opened contact of the relay connects automobile energy storage element anode, and the other end of the normally opened contact connects
The automobile storage battery anode is connect, one end of the coil of the relay connects the automobile energy storage element anode, the coil
The other end connects the input terminal of the first switch tube, wherein automobile energy storage element negative terminal is connect with the automobile storage battery negative terminal；
The control terminal of the first switch tube connects the first signal control port by the first resistor, and described the
The output end of one switching tube connects ground terminal by the second resistance；
The anode of the diode connects the common end of the coil and the first switch tube, the cathode of the diode
Connect the automobile energy storage element anode.
Preferably, the first switch tube is metal-oxide-semiconductor.
Preferably, the controllable switch circuit includes：Second switch, third switching tube, 3rd resistor and the 4th resistance；
The control terminal of the second switch connects the first signal control port by the 3rd resistor, and described the
The input terminal of two switching tubes is connect with the input terminal of the third switching tube, the output end connection automobile storage of the second switch
It can element negative terminal；
The control terminal of the third switching tube connects the first signal control port by the 4th resistance, and described the
The output end of three switching tubes connects the automobile storage battery negative terminal, wherein automobile energy storage element anode and the automobile storage battery anode
Connection.
Preferably, the internal resistance detection circuit includes：5th resistance, the 4th switching tube and the 6th resistance；
One end of 5th resistance connects the automobile storage battery anode, the other end connection of the 5th resistance described the
The output end of the input terminal of four switching tubes, the 4th switching tube connects the automobile storage battery negative terminal by the 6th resistance,
The common end of 4th switching tube connects the enable end of the microcontroller, the 4th switching tube and the 6th resistance
Common end connects the current signal as the output end of the internal resistance detection circuit and acquires port.
Preferably, further include：The 7th resistance being connected in series between the enable end and the 4th switching tube.
Preferably, further include：Current-limiting resistance, one end of the current-limiting resistance connect the current signal and acquire port, institute
The other end for stating current-limiting resistance connects the common end of the 4th switching tube and the 6th resistance.
Preferably, further include：Second capacitor, one end of second capacitor connect the current-limiting resistance and described micro-
The other end of the common end of controller, second capacitor connects ground terminal.
From above-mentioned technical solution it is found that the invention discloses a kind of startup power supply circuits, including：Microcontroller, voltage
Detection circuit, internal resistance detection circuit and controllable switch circuit, when installing automobile storage battery in automobile, the present invention can detecte automobile
Internal resistance, storage battery electricity and the storage battery health status of storage battery, also, microcontroller can be also connected by control controllable switch circuit,
Make automobile energy storage element output starting current starting automobile.It follows that startup power supply circuit disclosed by the invention has simultaneously
Start automobile and detect the function of automobile storage battery parameter, therefore, when automobile storage battery can not provide starting current, the present invention is being mentioned
The relevant parameter of automobile storage battery can also be detected while for starting current, the detection to automobile storage battery failure is realized, to have
Effect solves the problems, such as that existing artificial investigation failure is time-consuming and laborious, checks low efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
Disclosed attached drawing obtains other attached drawings.
Fig. 1 is a kind of circuit diagram of startup power supply circuit disclosed by the embodiments of the present invention；
Fig. 2 is the circuit diagram of another startup power supply circuit disclosed by the embodiments of the present invention；
Fig. 3 is a kind of circuit diagram of voltage detecting circuit disclosed by the embodiments of the present invention；
Fig. 4 is a kind of circuit diagram of controllable switch circuit disclosed by the embodiments of the present invention；
Fig. 5 is the circuit diagram of another controllable switch circuit disclosed by the embodiments of the present invention；
Fig. 6 is a kind of circuit diagram of internal resistance detection circuit disclosed by the embodiments of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of startup power supply circuits, former to solve existing artificial investigation automobile storage battery failure
The problem of cause, time-consuming and laborious and investigation low efficiency.
Referring to Fig. 1, a kind of circuit diagram of startup power supply circuit disclosed by the embodiments of the present invention, which includes：Microcontroller
Device U1, voltage detecting circuit 11, internal resistance detection circuit 12 and controllable switch circuit 13.
Wherein：
Microcontroller U1 has multiple signal acquisition ports and multiple signal control ports.
The input terminal of voltage detecting circuit 11 is connect with automobile storage battery anode KAR+, the output end of voltage detecting circuit 11 with
The voltage signal acquisition port of microcontroller U1 connects, voltage signal acquisition port be used to acquire automobile it is inactive when automobile electricity
Automobile storage battery voltage when bottle voltage and automobile starting, wherein voltage signal acquisition port is multiple signals of microcontroller U1
Acquire one in port.
The input terminal of internal resistance detection circuit 12 is connect with automobile storage battery anode KAR+, and the ground terminal of internal resistance detection circuit 12 connects
Automobile storage battery negative terminal KAR- is met, the current signal of the output end connection microcontroller U1 of internal resistance detection circuit 12 acquires port, electricity
Stream signal acquisition port is used to acquire electric current when automobile storage battery 10 discharges, wherein it is microcontroller that current signal, which acquires port,
One in multiple signal acquisition ports of U1.
The input terminal of controllable switch circuit 13 is connect with the common end of automobile energy storage element 20 and microcontroller U1, is controllably opened
The output end on powered-down road 13 is connect with automobile storage battery anode KAR+, the control terminal connection microcontroller U1's of controllable switch circuit 13
First signal control port, the first signal control port are used to export the conducting control letter that control controllable switch circuit 13 is connected
Number, wherein the first signal control port is one in multiple signal control ports of microcontroller U1.
The second signal control port of microcontroller U1 is used for when microcontroller U1 detects automobile storage battery 10, is exported micro-
Automobile storage battery voltage and internal resistance detection circuit when controller U1 is according to automobile storage battery voltage of automobile when inactive, automobile starting
Internal resistance, storage battery electricity and the storage battery health status for the automobile storage battery 10 that the electric current of 12 outputs obtains, wherein second signal control terminal
Mouth is one in multiple signal control ports of microcontroller U1.
It should be noted that when microcontroller U1 does not detect automobile storage battery or detects the pressure drop rate of electric car storage battery
Also conductivity control signal can be generated when not less than scheduled rate, to control the conducting of controllable switch circuit 13.
It is specifically described as follows for convenience of understanding for the working principle of startup power supply circuit：
Startup power supply circuit needs to connect with automobile energy storage element 20 in practical applications.
When microcontroller U1 detect be fitted without in current automobile automobile storage battery 10 (i.e. voltage detecting circuit 11 output extremely
The voltage of microcontroller U1 is zero) or microcontroller U1 detects (the i.e. automobile storage battery 10 when starting automobile of automobile storage battery 10
Pressure drop rate is not less than scheduled rate) when, microcontroller U1 is connected by control controllable switch circuit 13, makes automobile energy storage element
20 output starting currents start automobile.
Controllable switch circuit 13, automobile storage battery 10 is connected when it should be noted that if installing automobile storage battery 10 in automobile
It will be connected in parallel with automobile energy storage element 20, and output starting current starts automobile jointly.
At the same time, when in automobile install automobile storage battery 10 after, microcontroller can detecte automobile storage battery 10 internal resistance,
Storage battery electricity and storage battery health status, detection process are specific as follows：
It is assumed that voltage detecting circuit 11 detects that automobile storage battery voltage is V when automobile is inactive1, when automobile starting
Automobile storage battery voltage is V2, the electric current that when automobile starting flows through automobile storage battery 10 is I0；
Then internal resistance R '=(V of automobile storage battery 101-V2)/I0。
The storage battery electricity CCA=(V of automobile storage battery 101-7.2)*0.7/R′。
Storage battery health status SOH=(CCA*CCA)/(CCA1*CCA1) * 100% of automobile storage battery 10, wherein CCA1 is
Completely newly completely electricity is nominal CCA value to automobile storage battery 10, and CCA1 value is from user by inputting instruction setting to microcontroller U1.
In summary, startup power supply circuit disclosed by the invention can detecte vapour when installing automobile storage battery 10 in automobile
Internal resistance, storage battery electricity and the storage battery health status of automobile battery 10, also, microcontroller U1 can also pass through control controllable switch electricity
Road 13 is connected, and automobile energy storage element 20 is made to export starting current starting automobile.It follows that startup power supply electricity disclosed by the invention
Road has the function of starting automobile and detection automobile storage battery parameter simultaneously, therefore, when automobile storage battery can not provide starting current,
The present invention can also detect the relevant parameter of automobile storage battery 10 while providing starting current, realize to 10 failure of automobile storage battery
Detection, thus solve the problems, such as existing artificial investigation failure it is time-consuming and laborious, investigation low efficiency.
In order to further optimize the above embodiments, referring to fig. 2, the electricity of startup power supply circuit disclosed in another embodiment of the present invention
Lu Tu on the basis of the embodiment described in Fig. 1, further includes：Display circuit 14；
Display circuit 14 is connect with the second signal control port of microcontroller U1, for automobile storage battery 10 internal resistance,
Storage battery electricity and storage battery health status are shown.
Wherein, the internal resistance of automobile storage battery 10, storage battery electricity and storage battery health status can inform user in the form of voice,
At this time, it is only necessary to connect the second signal control port of microcontroller U1 with phonetic alarm.
In order to further optimize the above embodiments, referring to Fig. 3, a kind of electricity of voltage detecting circuit disclosed by the embodiments of the present invention
Lu Tu, voltage detecting circuit include：First partial pressure branch, the second partial pressure branch and first capacitor device C1；
One end of the first partial pressure branch connects automobile storage battery anode KAR+, and the other end of the first partial pressure branch is logical
Cross the second partial pressure branch connection ground terminal；
First capacitor device C1 is connected in the both ends of the second partial pressure branch, the first partial pressure branch, described the in parallel
Two partial pressure branches connect the voltage signal acquisition port VIN_SN of microcontroller U1, microcontroller with the common end of first capacitor device C1
Device U1 obtains the voltage of automobile storage battery 10 by reading the voltage at common end.
Specifically, common end is connect with the ADC (analog-digital converter) inside microcontroller U1.
Wherein, the first partial pressure branch may include a resistance (such as R11 shown in Fig. 3) or multiple series connections
Resistance, equally, second partial pressure branch may include a resistance (such as R12 shown in Fig. 3) or multiple series connections
Resistance.
In order to further optimize the above embodiments, referring to fig. 4, a kind of electricity of controllable switch circuit disclosed by the embodiments of the present invention
Lu Tu, controllable switch circuit include：Relay K1, diode D1, first switch tube Q1, first resistor R1 and second resistance R2.
Wherein, the normally opened contact of relay K1 one end connect automobile energy storage element anode B+, the normally opened contact it is another
One end connects automobile storage battery anode KAR+, and one end of the coil of relay K1 connects automobile energy storage element anode B+, the coil
The other end connect the input terminal of the first switch tube Q1, wherein automobile energy storage element negative terminal B- and the automobile storage battery are negative
Hold the connection of KAR- (not shown)；
The control terminal of first switch tube Q1 passes through the first signal control port ON/ of first resistor R1 connection microcontroller U1
The output end of OFF, first switch tube Q1 pass through second resistance R2 connection ground terminal；
The anode of diode D1 connects the common end of the coil and first switch tube Q1, and the cathode of diode D1 connects vapour
Vehicle energy-storage travelling wave tube anode B+.
The working principle of controllable switch circuit is：
When the first signal control port ON/OFF of microcontroller U1 exports high level, 2 feet of first switch tube Q1 and 3
Foot conducting, the coil of relay K1 have electric current to flow through, are closed the normally opened contact of relay K1, i.e. 1 foot of relay K1 and 2 feet
Conducting；When the first signal control port ON/OFF of microcontroller U1 exports low level, first switch tube Q1 shutdown, relay
The normally opened contact of the coil losing electricity of K1, relay K1 disconnects.
Preferably, first switch tube Q1 is metal-oxide-semiconductor.
In order to further optimize the above embodiments, referring to Fig. 5, a kind of controllable switch circuit disclosed in another embodiment of the present invention
Circuit diagram, controllable switch circuit includes：Second switch Q2, third switching tube Q3,3rd resistor R3 and the 4th resistance R4；
Wherein, the control terminal of second switch Q2 passes through the first signal control terminal of 3rd resistor R3 connection microcontroller U1
Mouth ON/OFF, the input terminal of second switch Q2 are connect with the input terminal of third switching tube Q3, the output end of second switch Q2
Connect automobile energy storage element negative terminal B-；
The control terminal of third switching tube Q3 passes through the first signal control port ON/ of the 4th resistance R4 connection microcontroller U1
The output end of OFF, third switching tube Q3 connect automobile storage battery negative terminal KAR-, wherein automobile energy storage element anode B+ and automobile electricity
Bottle anode KAR+ connection.
The working principle of controllable switch circuit is：
When the first signal control port ON/OFF of microcontroller U1 exports high level, second switch Q2 and third are opened
It closes pipe Q3 to simultaneously turn on, automobile energy storage element 20 exports starting current to automobile；When the first signal as microcontroller U1 controls
When port ON/OFF exports low level, second switch Q2 and third switching tube Q3 are simultaneously turned off.
Preferably, second switch Q2 and third switching tube Q3 can be NMOS tube, or be PMOS tube.
In order to further optimize the above embodiments, referring to Fig. 6, a kind of knot of internal resistance detection circuit disclosed by the embodiments of the present invention
Structure schematic diagram, internal resistance detection circuit include：5th resistance R5, the 4th switching tube Q4 and the 6th resistance R6；
One end of 5th resistance R5 connects automobile storage battery anode KAR+, and the other end of the 5th resistance R5 connects the 4th switching tube
The output end of the input terminal of Q4, the 4th switching tube Q4 passes through the 6th resistance R6 connection automobile storage battery negative terminal KAR-, the 4th switching tube
The enable end TEST_EN of the common end connection microcontroller U1 of Q4, the common end conduct of the 4th switching tube Q4 and the 6th resistance R6
The current signal of the output end connection microcontroller U1 of the internal resistance detection circuit acquires port KAR_I.
In order to further optimize the above embodiments, internal resistance detection circuit can also include：
The 7th resistance R7 being connected in series between enable end TEST_EN and the 4th switching tube Q4.
In order to further optimize the above embodiments, internal resistance detection circuit can also include：Current-limiting resistance R8；
One end connection current signal of current-limiting resistance R8 acquires port KAR_I, the other end connection the 4th of current-limiting resistance R8
The common end of switching tube Q4 and the 6th resistance R6.
In order to further optimize the above embodiments, internal resistance detection circuit can also include：The second capacitor C2 for filtering；
The common end of one end connection the current-limiting resistance R8 and microcontroller U1 of second capacitor C2, the second capacitor C2's is another
One end connects ground terminal.
The working principle of internal resistance detection circuit is：
When automobile is inactive, microcontroller U1 detects that automobile storage battery voltage is V by voltage detecting circuit 111, so
Microcontroller U1 exports high level, the 4th switching tube Q4 conducting to enable end TEST_EN afterwards, and automobile storage battery 10 passes through the 5th resistance
R5 electric discharge generates electric current, and electric current flows through the 6th resistance R6, and the 6th both ends resistance R6 form voltage difference, and microcontroller U1 passes through electric current
Signal acquisition port KAR_I obtains flowing through the electric current I of automobile storage battery 100, while being detected at this time by voltage detecting circuit 11
Automobile storage battery voltage is V2, so that internal resistance R '=(V of automobile storage battery 10 is calculated in microcontroller U11-V2)/I0.Then, micro-
Controller U1 exports low level, the 4th switching tube Q4 shutdown to enable end TEST_EN.
It should be noted that the controller U1 in Fig. 6 includes controller chip and its peripheral circuit.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of startup power supply circuit, which is characterized in that including：
Microcontroller has multiple signal acquisition ports and multiple signal control ports；
The voltage detecting circuit that input terminal is connect with automobile storage battery anode, the output end of the voltage detecting circuit and the micro-control
The voltage signal acquisition port of device processed connects, the voltage signal acquisition port be used to acquire automobile it is inactive when automobile storage battery
Automobile storage battery voltage when voltage and automobile starting, wherein the voltage signal acquisition port is the multiple signal acquisition terminal
One in mouthful；
Input terminal is connect with the automobile storage battery anode, and ground terminal connects the internal resistance detection circuit of automobile storage battery negative terminal, described interior
The output end of resistance detection circuit connects the current signal acquisition port of the microcontroller, and current signal acquisition port is used for
Acquire electric current when automobile storage battery electric discharge, wherein current signal acquisition port is in the multiple signal acquisition port
One；
Input terminal is connect with the common end of automobile energy storage element and the microcontroller, and output end and the automobile storage battery anode connect
The controllable switch circuit connect, the control terminal of the controllable switch circuit connect the first signal control port of the microcontroller,
The first signal control port is used to export the conductivity control signal for controlling the controllable switch circuit conducting, wherein described
First signal control port is one in the multiple signal control port；
The second signal control port of the microcontroller is used for when the microcontroller detects the automobile storage battery, output
Automobile storage battery voltage when the microcontroller is according to automobile storage battery voltage of automobile when inactive, the automobile starting and
Internal resistance, storage battery electricity and the storage battery health status for the automobile storage battery that the electric current obtains, wherein the second signal control
Port is one in the multiple signal control port.
2. startup power supply circuit according to claim 1, which is characterized in that further include：
It is connect with the second signal control port, for the internal resistance, the storage battery electricity and the storage battery health status
The display circuit shown.
3. startup power supply circuit according to claim 1, which is characterized in that the voltage detecting circuit includes：First point
Press branch, the second partial pressure branch and first capacitor device；
One end of the first partial pressure branch connects the automobile storage battery anode, and the other end of the first partial pressure branch passes through institute
State the second partial pressure branch connection ground terminal；
The first capacitor device is connected in the both ends of the second partial pressure branch, the first partial pressure branch, described second in parallel
It divides branch and connects the voltage signal acquisition port with the common end of the first capacitor device.
4. startup power supply circuit according to claim 1, which is characterized in that the controllable switch circuit includes：Relay,
Diode, first switch tube, first resistor and second resistance；
One end of the normally opened contact of the relay connects automobile energy storage element anode, and the other end of the normally opened contact connects institute
State automobile storage battery anode, one end of the coil of the relay connects the automobile energy storage element anode, the coil it is another
End connects the input terminal of the first switch tube, wherein automobile energy storage element negative terminal is connect with the automobile storage battery negative terminal；
The control terminal of the first switch tube connects the first signal control port by the first resistor, and described first opens
The output end for closing pipe connects ground terminal by the second resistance；
The anode of the diode connects the common end of the coil and the first switch tube, the cathode connection of the diode
The automobile energy storage element anode.
5. startup power supply circuit according to claim 4, which is characterized in that the first switch tube is metal-oxide-semiconductor.
6. startup power supply circuit according to claim 1, which is characterized in that the controllable switch circuit includes：Second opens
Guan Guan, third switching tube, 3rd resistor and the 4th resistance；
The control terminal of the second switch connects the first signal control port by the 3rd resistor, and described second opens
The input terminal for closing pipe is connect with the input terminal of the third switching tube, the output end connection automobile energy storage member of the second switch
Part negative terminal；
The control terminal of the third switching tube connects the first signal control port by the 4th resistance, and the third is opened
The output end for closing pipe connects the automobile storage battery negative terminal, wherein automobile energy storage element anode is connected with the automobile storage battery anode.
7. startup power supply circuit according to claim 1, which is characterized in that the internal resistance detection circuit includes：5th electricity
Resistance, the 4th switching tube and the 6th resistance；
One end of 5th resistance connects the automobile storage battery anode, and the other end connection the described 4th of the 5th resistance is opened
The input terminal of pipe is closed, the output end of the 4th switching tube connects the automobile storage battery negative terminal by the 6th resistance, described
The common end of 4th switching tube connects the enable end of the microcontroller, the 4th switching tube and the 6th resistance it is public
It holds the output end as the internal resistance detection circuit to connect the current signal and acquires port.
8. startup power supply circuit according to claim 7, which is characterized in that further include：It is connected in series in the enable end
The 7th resistance between the 4th switching tube.
9. startup power supply circuit according to claim 7, which is characterized in that further include：Current-limiting resistance, the current-limiting resistance
One end connect the current signal and acquire port, the other end of the current-limiting resistance connects the 4th switching tube and described the
The common end of six resistance.
10. startup power supply circuit according to claim 9, which is characterized in that further include：Second capacitor, described second
One end of capacitor connects the common end of the current-limiting resistance and the microcontroller, the other end connection of second capacitor
Ground terminal.
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| CN201610709418.9A CN106166990B (en) | 2016-08-23 | 2016-08-23 | A kind of startup power supply circuit |
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| CN106786895B (en) * | 2016-12-26 | 2023-05-30 | 苏州绿恺动力电子科技有限公司 | Battery clamp safety management system of automobile emergency starting power supply |
| US11539233B2 (en) | 2019-05-30 | 2022-12-27 | Splice Energy Solutions, LLC | Smart battery backup system |
| CN111781505B (en) * | 2020-07-13 | 2022-10-11 | 深圳市道通科技股份有限公司 | Vehicle detection method and device and detection equipment |
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