CN206618802U - A kind of on-vehicle battery detector - Google Patents
A kind of on-vehicle battery detector Download PDFInfo
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- CN206618802U CN206618802U CN201720355457.3U CN201720355457U CN206618802U CN 206618802 U CN206618802 U CN 206618802U CN 201720355457 U CN201720355457 U CN 201720355457U CN 206618802 U CN206618802 U CN 206618802U
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- detection line
- circuit
- vehicle battery
- voltage
- line
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a kind of on-vehicle battery detector, including detector body and the display screen being arranged on detector body, the circuit installation cavity for mounting circuit boards is formed in the detector body；Microprocessor is provided with the circuit board；The analog input end of the microprocessor is connected with voltage detecting passage and current detecting passage, and data sending terminal is connected through driver module with the display screen；The voltage detecting passage includes resistor voltage divider circuit and the first peak holding circuit, and the current detecting passage includes amplifying circuit and the second peak holding circuit.Beneficial effect：The on-vehicle battery detector can monitor the output current and output voltage of on-vehicle battery simultaneously, detect fast response time, can delicately catch the kurtosis of voltage and current, for the convenient parameter for providing on-vehicle battery of user, overall structure is simple, practical, and user experience is high.
Description
Technical field
The utility model is related to the measure voltage ＆ current equipment of on-vehicle battery, and in particular to a kind of on-vehicle battery detector.
Background technology
As the improvement of people's living standards, automobile has become the most common vehicles of people's go off daily, for
The maintenance of automobile and data diagnosis turn into one of major issue that everybody pays close attention to, and the leading indicator of the maintenance diagnostics of automobile includes hair
Performance, automobile circuit and the on-vehicle battery of motivation, the diagnosis to the electric current and voltage of on-vehicle battery are most important.
The voltage and current spike width of moment is extremely short starting for automobile, and kurtosis can reach more than 600A, but often
The basic detection instrument such as the universal meter seen has that response speed is slow, electric current gear number, it is difficult to which sensitive accurately detect
To electric current and the kurtosis of voltage, therefore, appearance of the invention has important Practical significance.
Utility model content
For defect of the prior art, the utility model discloses a kind of on-vehicle battery detector, on-vehicle battery inspection
The output current and output voltage of on-vehicle battery can be monitored simultaneously by surveying instrument, detected fast response time, can delicately be caught voltage
It is the convenient parameter that on-vehicle battery is provided of user with the kurtosis of electric current, overall structure is simple, practical.
The technical solution of the utility model is as follows：
A kind of on-vehicle battery detector, including detector body and the display screen being arranged on detector body, the inspection
Survey in instrument body and form the circuit installation cavity for mounting circuit boards；Microprocessor is provided with the circuit board；Micro- place
The analog input end of reason device is connected with voltage detecting passage and current detecting passage, and data sending terminal is through driver module and institute
State display screen connection；The voltage detecting passage includes resistor voltage divider circuit and the first peak holding circuit, the current detecting
Passage includes amplifying circuit and the second peak holding circuit.
The on-vehicle battery detector of said structure description can measure the voltage of on-vehicle battery simultaneously by double sense channels
And electric current, engine start can delicately be detected by the resistor voltage divider circuit in voltage detecting passage and the first Peak current
The voltage spikes of moment on-vehicle battery, accordingly, current detecting passage can be with Sensitive Detection car engine moment on-vehicle batteries
The kurtosis of electric current so that car owner or maintenance personal can quickly understand the use parameter of on-vehicle battery.
Further, in above-mentioned on-vehicle battery detector, the input of the resistor voltage divider circuit is connected with voltage detecting
Line, the first output end is connected with the microprocessor, and the second output end connects after the first peak holding circuit with the microprocessor
Connect；The input of the shunt resistance is connected with current detecting line, the input connection of output end and amplifying circuit；It is described to put
First output end of big circuit is connected with the microprocessor, the second output end after the second peak holding circuit with the microprocessor
Device is connected.In foregoing circuit, vehicle mounted electric can delicately be caught by the first peak holding circuit and the second peak holding circuit
The kurtosis of cell voltage and electric current.
Further, in above-mentioned on-vehicle battery detector, the detection line of the on-vehicle battery detector includes the first detection
Line, the second detection line and the 3rd detection line, the second detection line are public detection line；First detection line and the second detection line are described
Voltage detecting line；Second detection line and the 3rd detection line are the current detecting line.
Further, in above-mentioned on-vehicle battery detector, the detection line of the on-vehicle battery detector includes the first detection
Line, the second detection line, the 3rd detection line and the 4th detection line；First detection line and the second detection line are the voltage detecting line；
3rd detection line and the 4th detection line are the current detecting line；The voltage detecting line is connected to the two ends of on-vehicle battery, institute
Current detecting line is stated to be connected in motor start circuit.
Further, in above-mentioned on-vehicle battery detector, the detection line and display screen are embedded at the detector body
On surface.
Further, in above-mentioned on-vehicle battery detector, the shunt resistance is the four-terminal resistance being made of metal, including
Two current terminals and two voltage terminals.
Further, in above-mentioned on-vehicle battery detector, the current terminal is metal hole, is fixed on by fixture
On the circuit board；The voltage terminal is bonding jumper, and the one end of the bonding jumper away from current terminal is by welding or fixing
Part is fixed on the circuit board；The length of the bonding jumper is more than 10mm.
Remarkable result of the present utility model：The utility model discloses a kind of on-vehicle battery detector, including detector sheet
The circuit installation cavity for mounting circuit boards is formed in body and display screen, detector body；Microprocessor is provided with circuit board；
The analog input end of microprocessor is connected with voltage detecting passage and current detecting passage, and data sending terminal is through driver module
It is connected with the display screen；The voltage detecting passage includes resistor voltage divider circuit and the first peak holding circuit, the electric current
Sense channel includes amplifying circuit and the second peak holding circuit.Beneficial effect：It is logical by voltage detecting passage and current detecting
Road can delicately capture the kurtosis that on-vehicle battery starts transient voltage and electric current, be that car owner and maintenance personal provide accurately
Detection parameter, overall structure is simple, with Practical significance.
Brief description of the drawings
Fig. 1 is the schematic block circuit diagram of on-vehicle battery detector in the utility model embodiment；
Fig. 2 is detection block diagram of the on-vehicle battery detector in detection process in the utility model embodiment；
Fig. 3 is the shunt resistance structure chart of on-vehicle battery detector in the utility model embodiment；
Fig. 4 is the circuit structure diagram of resistor voltage divider circuit and amplifying circuit in the utility model embodiment；
Fig. 5 is the chip pin figure of microprocessor in the utility model embodiment；
Fig. 6 is peak holding circuit circuit diagram in the utility model embodiment.
Reference：
1- voltage terminals；2- current terminals
Embodiment
The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only
For clearly illustrating the technical solution of the utility model, therefore example is intended only as, and this reality can not be limited with this
With new protection domain.
Embodiment：
Reference picture 1, Fig. 2 and Fig. 3, the utility model discloses a kind of on-vehicle battery detector, including detector body and
It is arranged on the circuit installation cavity formed in the display screen on detector body, the detector body for mounting circuit boards；Institute
State and microprocessor is provided with circuit board；The analog input end of the microprocessor is connected with voltage detecting passage and current detecting
Passage, data sending terminal is connected through driver module with the display screen；The voltage detecting passage includes electric resistance partial pressure electricity
Road and the first peak holding circuit；The input of the resistor voltage divider circuit is connected with voltage detecting line, the first output end and institute
Microprocessor connection is stated, the second output end is connected after the first peak holding circuit with the microprocessor；The current detecting is led to
Road includes amplifying circuit and the second peak holding circuit；The amplifying circuit include shunt resistance, the shunt resistance it is defeated
Enter end and be connected with current detecting line, the input connection of output end and amplifying circuit；First output end of the amplifying circuit with
The microprocessor connection, the second output end is connected after the second peak holding circuit with the microprocessor.
Detection line in said structure includes the first detection line, the second detection line, the 3rd detection line and the 4th detection line；The
One detection line and the second detection line are the voltage detecting line；3rd detection line and the 4th detection line are the current detecting line；
The voltage detecting line is connected to the two ends of on-vehicle battery, measures the voltage of on-vehicle battery, and the current detecting line is connected to vapour
In car start-up circuit, the electric current in detection automobile circuit；The detection line and display screen are embedded at the detector body surface
On；The shunt resistance is by the four-terminal resistance that is made of metal, including two current terminals 2 and two voltage terminals 1；The electricity
Stream terminal 2 is metal hole, is fixed on by fixture on the circuit board；The voltage terminal 1 is bonding jumper, the metal
The one end of bar away from current terminal 2 is fixed on the circuit board by welding or fixture.
The use of above-mentioned detection line also has another mode, and application method is as follows：The inspection of the on-vehicle battery detector
Survey line includes the first detection line, the second detection line and the 3rd detection line, and the second detection line is public detection line；First detection line and
Second detection line is the voltage detecting line；Second detection line and the 3rd detection line are the current detecting line；Voltage detecting line
With public p-wire of current detecting line, circuit arrangement can be simplified, while material can be reduced, cost is reduced.
Preferably, microprocessor uses STM8S005k6；The length of the bonding jumper is more than 10mm.
There are three as the detection line of input in reference picture 4, the circuit, NO3 is the first detection line input point, NO5 is
Second detection line input point, NO4 is the 3rd detection line input point, and NO5 therein is public detection line input point.It is electric in the circuit
Resistance R26, resistance R27, resistance R28 and electric capacity C11 constitute resistor voltage divider circuit, between the first detection line and the second detection line according to
Secondary series resistance R26 and resistance R27, resistance R26 and resistance R27 common node connect microprocessor or first through resistance R28
Peak holding circuit, electric capacity C11 is filter capacitor, and the input 8 for connecing microprocessor all the way of common node is AD converted, separately
Connecing the positive input terminal of the operational amplifier U6B in the first peak holding circuit all the way is used to detect minimum peak；Electric capacity C11 and electricity
Common node between resistance R29 is followed by the common ground end of on-vehicle battery detector through inductance L1.
Other devices in Fig. 4 in addition to resistance R26, resistance R27, resistance R28 and electric capacity C11 constitute amplification electricity
Resistance R29 in road, amplifying circuit is shunt resistance, and F2 is overcurrent protector, prevents user misoperation electric current is excessive from burning out car
Carry battery or this instrument；Resistance R29 and overcurrent protector F2, resistance are sequentially connected in series between second detection line and the 3rd detection line
The common node of R29 and overcurrent protector connects operational amplifier U5A positive input terminal, resistance R29 other end warp through resistance R30
Resistance R31 connects the negative input end of the operational amplifier U5A, between resistance R31 and the operational amplifier U5A negative input end
Node is followed by the positive input of the output end of the operational amplifier U5A, resistance R30 and the operational amplifier U5A through resistance R32
Node between end connects the common ground end of the on-vehicle battery detector, the output end of the operational amplifier U5A through resistance R40
The positive input terminal of operational amplifier U6A in the second peak holding circuit, operational amplifier U5A output end are followed by through resistance R39
Resistance R33 and electric capacity C12 through being sequentially connected in series are followed by the common ground end of the on-vehicle battery detector, resistance R33 and electric capacity
The input 14 of the C12 public termination microprocessor；
Resistance R33 and electric capacity C12 common port also connect operational amplifier U5B positive input terminal, the on-vehicle battery detection
The common ground end of instrument is followed by the negative input end of the operational amplifier U5B, resistance R34 and the operation amplifier through resistance R34
Node between device U5B negative input end is followed by the output end of the operational amplifier U5B through resistance R35, operational amplifier U5B's
Resistance R36 and electric capacity C13 of the output end through being sequentially connected in series are followed by the common ground end of the on-vehicle battery detector, resistance R36
The input 13 of the microprocessor is connect with electric capacity C13 common node.
There are three, the output end of resistor voltage divider circuit as the detection line of input in resistor voltage divider circuit and amplifying circuit
Input microprocessor is AD converted all the way, another road input peak detection circuit detection minimum peak；Overcurrent protector F2 is protected
Protection circuit safety, shunt resistance R29 detected values input micro- place after amplifying through operational amplifier U5A and operational amplifier U5B twin-stages
Analog-to-digital conversion is carried out in reason device；Inductance L1 is used to prevent automobile starting moment surge from causing microprocessor to crash；Operational amplifier
U5A and operational amplifier U5B use AD8607.
Reference picture 5 and the chip pin figure that Fig. 6, Fig. 5 are microprocessor, Fig. 6 peak holding circuit circuit diagrams；Peak holding
Circuit includes analog switch U8, resistance R37, resistance R38, resistance R44, operational amplifier U6A, operational amplifier U6B, electric capacity
C15, electric capacity C16, diode D2 and diode D3；Analog switch U8 uses MC14053B；Analog switch U8 14 pins and 15
Pin picks up the common ground end for carrying battery tester；Second peak holding circuit, analog switch U8 12 pins are through resistance R37
It is connected with operational amplifier U6A negative input end, operational amplifier U5A output end is followed by operational amplifier U6A through resistance R39
Positive input terminal, the output end of operational amplifier connects the input 12 of microprocessor, the negative electrode of diode through forward diode D2
Operational amplifier U6A negative input end is connect, the negative electrode of diode also connects the common ground end of battery tester through electric capacity C15；The
One peak holding circuit, analog switch U8 1 pin connects operational amplifier U6B negative input end through resistance R38, resistance R28 and
Common node between electric capacity C11 connects operational amplifier U6B positive input terminal, and operational amplifier U6B output end is through reverse two pole
Pipe D3 connects the input 11 of microprocessor, and diode two ends parallel resistance R44, the anode of diode connects operational amplifier U6B's
Negative input end, the anode of diode also picks up the common ground end for carrying battery tester through electric capacity C16；Operational amplifier U6B and
Operational amplifier U6A uses four-operational amplifier MCP6004.
On-vehicle battery detector Cleaning Principle of the present utility model is as follows：
The voltage detecting passage uses resistor voltage divider circuit evanescent voltage signal, wherein input microprocessor is carried out all the way
AD conversion, another road catches minimum peak by the first peak holding circuit, and then input microprocessor is AD converted；Electric current
Sense channel uses shunt resistance, and two circular ports are using fastener fixations such as screws as current terminal 2, and two bonding jumpers are made
For voltage terminal 1, the signal of the sampling of voltage terminal 1 is after amplifying circuit, wherein input microprocessor processor enters all the way
Row AD conversion, another road catches peak-peak by the second peak holding circuit, and then input microprocessor is AD converted.
In actual applications, voltage-stablizer is additionally provided with the power circuit of the present embodiment, stabilization is exported by voltage-stablizer
Constant voltage, voltage-stablizer uses BL8503-33；Power circuit is connected with reference voltage detection circuit, for detecting power circuit
The voltage of input, and supply voltage and reference voltage are contrasted with comparator；Microprocessor is also associated with screen back photoelectricity
Road, buzzer drive circuit and keyboard circuit, are coordinated by the LED in circuit and loudspeaker and complete on-vehicle battery voltage and current
Detection.
The utility model discloses a kind of on-vehicle battery detector, including detector body and display screen, detector body
Inside form the circuit installation cavity for mounting circuit boards；Microprocessor is provided with circuit board；The analog input end of microprocessor
Voltage detecting passage and current detecting passage are connected with, data sending terminal is connected through driver module with the display screen；Institute
Stating voltage detecting passage includes resistor voltage divider circuit and the first peak holding circuit, and the current detecting passage includes amplifying circuit
With the second peak holding circuit.On-vehicle battery can be delicately captured by voltage detecting passage and current detecting passage to start
The kurtosis of transient voltage and electric current, can be with sensitive by the resistor voltage divider circuit in voltage detecting passage and the first Peak current
Ground detects the voltage spikes of engine start moment on-vehicle battery, and accordingly, current detecting passage can be with Sensitive Detection automobile
Start the kurtosis of moment on-vehicle battery electric current so that car owner or maintenance personal can quickly understand the use parameter of on-vehicle battery；
The on-vehicle battery detector causes auto repair more convenient and quicker.
In specification of the present utility model, numerous specific details are set forth.It is to be appreciated, however, that reality of the present utility model
Applying example can put into practice in the case of these no details.In some instances, known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this description.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should manage
Solution：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole skills
Art feature carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model
The scope of each embodiment technical scheme, it all should cover among claim of the present utility model and the scope of specification.
Claims (7)
1. a kind of on-vehicle battery detector, it is characterised in that including detector body and the display being arranged on detector body
The circuit installation cavity for mounting circuit boards is formed in screen, the detector body；
Microprocessor is provided with the circuit board；The analog input end of the microprocessor is connected with voltage detecting passage and electricity
Sense channel is flowed, data sending terminal is connected through driver module with the display screen；The voltage detecting passage includes resistance
Bleeder circuit and the first peak holding circuit, the current detecting passage include amplifying circuit and the second peak holding circuit.
2. on-vehicle battery detector according to claim 1, it is characterised in that the input of the resistor voltage divider circuit connects
Be connected to voltage detecting line, the first output end is connected with the microprocessor, the second output end after the first peak holding circuit with institute
State microprocessor connection；
The input of the amplifying circuit is connected with shunt resistance, and the input of shunt resistance is connected with current detecting line；It is described
First output end of amplifying circuit is connected with the microprocessor, the second output end after the second peak holding circuit with micro- place
Manage device connection.
3. on-vehicle battery detector according to claim 1, it is characterised in that the detection line of the on-vehicle battery detector
Including the first detection line, the second detection line and the 3rd detection line, the second detection line is public detection line；First detection line and second
Detection line is the voltage detecting line；Second detection line and the 3rd detection line are the current detecting line.
4. on-vehicle battery detector according to claim 1, it is characterised in that the detection line of the on-vehicle battery detector
Including the first detection line, the second detection line, the 3rd detection line and the 4th detection line；First detection line and the second detection line are described
Voltage detecting line；3rd detection line and the 4th detection line are the current detecting line；The voltage detecting line is connected to vehicle mounted electric
The two ends in pond, the current detecting line is connected in motor start circuit.
5. on-vehicle battery detector according to claim 4, it is characterised in that the detection line and display screen are embedded at institute
State on detector body surface.
6. on-vehicle battery detector according to claim 2, it is characterised in that the shunt resistance is made of metal
Four-terminal resistance, including two current terminals and two voltage terminals.
7. on-vehicle battery detector according to claim 6, it is characterised in that the current terminal is metal hole, is led to
Fixture is crossed to be fixed on the circuit board；The voltage terminal is bonding jumper, the one end of the bonding jumper away from current terminal
It is fixed on by welding or fixture on the circuit board；The length of the bonding jumper is more than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355457.3U CN206618802U (en) | 2017-04-06 | 2017-04-06 | A kind of on-vehicle battery detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720355457.3U CN206618802U (en) | 2017-04-06 | 2017-04-06 | A kind of on-vehicle battery detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206618802U true CN206618802U (en) | 2017-11-07 |
Family
ID=60235644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720355457.3U Active CN206618802U (en) | 2017-04-06 | 2017-04-06 | A kind of on-vehicle battery detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206618802U (en) |
-
2017
- 2017-04-06 CN CN201720355457.3U patent/CN206618802U/en active Active
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