CN209707596U - The measuring circuit and quick change battery of the contact resistance of quick change adapter connector - Google Patents
The measuring circuit and quick change battery of the contact resistance of quick change adapter connector Download PDFInfo
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- CN209707596U CN209707596U CN201821826053.9U CN201821826053U CN209707596U CN 209707596 U CN209707596 U CN 209707596U CN 201821826053 U CN201821826053 U CN 201821826053U CN 209707596 U CN209707596 U CN 209707596U
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Abstract
The utility model discloses a kind of measuring circuit of the contact resistance of quick change adapter connector and quick change battery, it includes first end and second end that quick change adapter connector, which includes positive terminal and negative terminal,；The measuring unit of measuring circuit includes the voltage measurement unit and current source of the first, second, third connecting pin, measuring resistance and its voltage measurement unit, contact resistance；One end of one end of measuring resistance and its one end of voltage measurement unit, current source is electrically connected with the first connecting pin；The other end of the other end of measuring resistance and its voltage measurement unit, the voltage measurement unit of contact resistance one end be electrically connected with second connection end；The other end of current source, the other end of the voltage measurement unit of contact resistance are electrically connected with third connecting pin；First connecting pin is electrically connected with the positive or negative pole for changing battery, and second connection end is electrically connected with the first end of positive terminal or negative terminal, and third connecting pin is electrically connected with the second end of positive terminal or negative terminal.The resistance value of contact resistance can quantitatively be measured.
Description
Technical field
The utility model relates to electrokinetic cell system field, in particular to a kind of measurement of the contact resistance of quick change adapter connector
Circuit and quick change battery.
Background technique
It connects and whether may be used in vehicle operation to judge to change power battery and the quick change connected device at vehicle end in electric system
By property, for traditional approach using one HVIL of series connection (high-voltage interlocking detection) signal as shown in Figure 1 into circuit, detection should
Whether circuit is connected to, and then qualitatively judges whether quick connector contact is good.Which connects without the quick change that measures of standard measure
It can not be found in time when connecing the resistance value of the contact resistance of device, therefore being more than safe range for the resistance value of contact resistance, once this
When it is larger by the electric current of quick change adapter connector, then be easy because generating heat excessive causes safety problem.
Utility model content
The technical problems to be solved in the utility model is to overcome and measure quick change connection without standard measure in the prior art
The resistance value of the contact resistance of device haves the defects that security risk, and providing one kind quantitatively can measure and change quick change adapter connector in electric system
Contact resistance resistance value quick change adapter connector contact resistance measuring circuit and quick change battery.
The utility model is to solve above-mentioned technical problem by following technical proposals:
The utility model provides a kind of measuring circuit for changing the contact resistance of quick change adapter connector in electric system, the quick change
Connector includes positive terminal and negative terminal, and the positive terminal and the negative terminal include first end and second end, and described first
Electric battery-end is changed in end connection, and the second end connects vehicle end；
The measuring circuit includes measuring unit, and the measuring unit includes the first connecting pin, second connection end, third company
Connect end, measuring resistance, the voltage measurement unit of the measuring resistance, the contact resistance voltage measurement unit and an electric current
Source；
One end of the measuring resistance, one end of the voltage measurement unit of the measuring resistance, the current source one end
It is electrically connected with first connecting pin；
The other end of the measuring resistance, the other end of the voltage measurement unit of the measuring resistance, the contact resistance
One end of voltage measurement unit be electrically connected with the second connection end；
The other end of the current source, the contact resistance voltage measurement unit the other end and the third connecting pin
Electrical connection；
First connecting pin is electrically connected with the anode for changing battery, and the second connection end and the anode
The first end of column is electrically connected, and the third connecting pin is electrically connected with the second end of the positive terminal；
Or,
First connecting pin is electrically connected with the cathode for changing battery, and the second connection end and the cathode
The first end of column is electrically connected, and the third connecting pin is electrically connected with the second end of the negative terminal.
In the present solution, the voltage value that is measured according to the voltage measurement unit of the resistance value of measuring resistance, measuring resistance and connecing
The resistance value of contact resistance can be calculated in the voltage value that the voltage measurement unit of electric shock resistance measures.
In the present solution, the positive terminal or negative terminal for measuring contact-connection assembly for electric that measuring circuit can be quantified by measuring unit
Contact resistance resistance value, solve asking for the resistance value of the contact resistance for measuring quick change adapter connector without standard measure in the prior art
Topic.
Preferably, the measuring circuit includes measuring unit described in two groups, respectively the first measuring unit and the second measurement
Unit；
First connecting pin of first measuring unit is electrically connected with the anode for changing battery, and described first surveys
The second connection end of amount unit is electrically connected with the first end of the positive terminal, and the third of first measuring unit connects
End is connect to be electrically connected with the second end of the positive terminal；
First connecting pin of second measuring unit is electrically connected with the cathode for changing battery, and described second surveys
The second connection end of amount unit is electrically connected with the first end of the negative terminal, and the third of second measuring unit connects
End is connect to be electrically connected with the second end of the negative terminal.
In the present solution, measuring circuit includes two the same measuring units of structure, it is respectively used to the contact of test positive terminal
The resistance value of the contact resistance of the resistance value and negative terminal of resistance can while measure positive terminal and negative terminal to realize respectively
The resistance value of contact resistance.
Preferably, the voltage measurement unit includes amplifier and ADC (analog-digital converter) special chip.
Preferably, the voltage measurement unit of the measuring resistance and the voltage measurement unit of the contact resistance be synchronize adopt
Sample test voltage.
In the present solution, the acquisition time of the voltage of measuring resistance needed with the acquisition time of the voltage of contact resistance it is synchronous,
The resistance value for the contact resistance measured in this way is more accurate.
Preferably, the measuring unit further includes a switch, the switch is for controlling whether the current source is place
The measuring unit power supply.
In the present solution, measuring unit further includes a control switch, the switch and electric current are source-series, according to the needs of measurement,
It can be controlled and be realized to whether current source is measuring unit power supply according to the connecting and disconnecting to the switch.
The utility model additionally provides a kind of quick change battery, including the contact electricity above-mentioned for changing quick change adapter connector in electric system
The measuring circuit of resistance.
In the present solution, measuring circuit above-mentioned is directly integrated on quick change battery, when quick change battery is connected by quick change
When device is connected to vehicle end, the resistance value of the contact resistance of quick change adapter connector can be measured in real time.
The positive effect of the utility model is: the survey of the contact resistance of quick change adapter connector provided by the utility model
Amount circuit and quick change battery can not only measure the break-make situation of vehicle end quick change adapter connector, also be realized by introducing measuring unit
Microresistivity survey, can be convenient quantitative measurment change electric system quick change adapter connector contact resistance resistance value.
Detailed description of the invention
Fig. 1 is the circuit diagram of traditional test quick change adapter connector connection situation.
Fig. 2 is the schematic diagram of the measuring circuit of the contact resistance of the quick change adapter connector of one preferred embodiment of the utility model.
Fig. 3 is that electricity is being changed in the measuring circuit setting of the contact resistance of the quick change adapter connector of one preferred embodiment of the utility model
Circuit part schematic diagram when on automobile.
Specific embodiment
The utility model is further illustrated below by the mode of embodiment, but is not therefore limited in the utility model
Among the embodiment described range.
As shown in Fig. 2, a kind of measuring circuit for changing the contact resistance of quick change adapter connector in electric system is present embodiments provided,
The quick change adapter connector includes positive terminal and negative terminal, and the positive terminal and the negative terminal include first end 1 and second end
2, electric battery-end is changed in the connection of first end 1, and the second end connects vehicle end.The measuring circuit of the present embodiment includes two measurements
Unit, respectively the first measuring unit 3 and the second measuring unit 4.Each measuring unit includes the first connecting pin 301 or 401, the
Two connecting pins 302 or 402, third connecting pin 303 or 403, measuring resistance R1 or R2, the measuring resistance voltage measurement unit
U1 or U2, the voltage measurement unit Ux or Uy of the contact resistance and current source an I1 or I2.
One end of the measuring resistance, one end of the voltage measurement unit of the measuring resistance, institute in each measuring unit
The one end for stating current source is electrically connected with first connecting pin.The voltage of the other end of the measuring resistance, the measuring resistance
The other end of measuring unit, the contact resistance one end of voltage measurement unit be electrically connected with the second connection end.It is described
The other end of current source, the contact resistance the other end of voltage measurement unit be electrically connected with the third connecting pin.
In the present embodiment, the first connecting pin 301 of the first measuring unit 3 is electrically connected with the anode for changing battery, and first surveys
The second connection end 302 of amount unit 3 is electrically connected with the first end of positive terminal, the third connecting pin 303 of the first measuring unit 3 and just
The second end of pole is electrically connected.First connecting pin 401 of the second measuring unit 4 is electrically connected with the cathode for changing battery, and second surveys
Amount unit 4 second connection end 402 be electrically connected with the first end of negative terminal, the third connecting pin 403 of the second measuring unit 4 with bear
The second end of pole is electrically connected.
In the present embodiment, the voltage measurement unit inside each measuring unit includes amplifier and ADC special chip, standard
The voltage measurement unit of resistance and the voltage measurement unit of contact resistance test the electricity of each self-resistance by the way of synchronized sampling
Pressure.In the present embodiment, the acquisition time of the voltage of the acquisition time and contact resistance of the voltage of measuring resistance need it is synchronous, in this way
The resistance value for the contact resistance measured is more accurate.
In the present embodiment, each measuring unit further includes a switch (not shown) in circuit, which is used for
Control current source whether be where measuring unit power supply.The switch and electric current are source-series, being capable of basis according to the needs of measurement
The connecting and disconnecting control of the switch is realized to whether current source is measuring unit power supply.The present embodiment can utilize and change electricity
On-line measurement is realized in battery power supply, can also realize off-line measurement by current source supply.
As shown in figure 3, at this time measuring circuit with the battery pack BT2, fuse F1, switch S1 that change electric battery related circuitry
It is arranged together with S2 to changing on electric car, wherein capacitor C2, resistance R0 and inductance L1 represent the load of Che Duan.At this point, standard
Resistance and measured circuit are directly connected on existing change in the major loop that battery, quick change adapter connector and vehicle end are constituted.This reality
Example is applied by the way that standard sample resistance, i.e. current divider is added, in measurement by mentioning independently of the current source I1 and I2 that change battery
Power supply source completes test.At this point, the voltage value that is measured according to the voltage measurement unit of the resistance value of measuring resistance, measuring resistance and
The resistance value of contact resistance can be calculated in the voltage value that the voltage measurement unit of contact resistance measures.Specific formula for calculation is such as
Under:
Rx=Ux*R1/U1；
Ry=Uy*R2/U2.
In the present embodiment, U1 and Ux are synchronized sampling, and U2 is also similar with Uy, can be real using amplifier and ADC special chip
Existing relevant voltage measurement.
In the present embodiment, measuring circuit includes two the same measuring units of structure, is respectively used to connecing for test positive terminal
The resistance value for the resistance value of resistance and the contact resistance of negative terminal of getting an electric shock can while measure positive terminal and negative terminal to realize respectively
Contact resistance resistance value, solve asking for the resistance value of the contact resistance for measuring quick change adapter connector without standard measure in the prior art
Topic.
The present embodiment additionally provides a kind of quick change battery, including above-mentioned in the present embodiment changes quick change adapter connector in electric system
Contact resistance measuring circuit.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made,
But these change and modification each fall within the protection scope of the utility model.
Claims (6)
1. a kind of measuring circuit of the contact resistance of quick change adapter connector, the quick change adapter connector includes positive terminal and negative terminal, institute
Stating positive terminal and the negative terminal includes first end and second end, and electric battery-end, the second end are changed in the first end connection
Connect vehicle end；
It is characterized in that,
The measuring circuit includes measuring unit, and the measuring unit includes the first connecting pin, second connection end, third connection
End, measuring resistance, the voltage measurement unit of the measuring resistance, the contact resistance voltage measurement unit and an electric current
Source；
One end of the measuring resistance, one end of the voltage measurement unit of the measuring resistance, one end of the current source and institute
State the electrical connection of the first connecting pin；
The other end of the measuring resistance, the other end of the voltage measurement unit of the measuring resistance, the contact resistance electricity
One end of pressure measuring unit is electrically connected with the second connection end；
The other end of the current source, the contact resistance the other end of voltage measurement unit be electrically connected with the third connecting pin
It connects；
First connecting pin is electrically connected with the anode for changing battery, and the second connection end and the positive terminal
First end electrical connection, and the third connecting pin is electrically connected with the second end of the positive terminal；
Or,
First connecting pin is electrically connected with the cathode for changing battery, and the second connection end and the negative terminal
First end electrical connection, and the third connecting pin is electrically connected with the second end of the negative terminal.
2. the measuring circuit of the contact resistance of quick change adapter connector as described in claim 1, which is characterized in that the measuring circuit
Including measuring unit described in two groups, respectively the first measuring unit and the second measuring unit；
First connecting pin of first measuring unit is electrically connected with the anode for changing battery, and first measurement is single
The second connection end of member is electrically connected with the first end of the positive terminal, the third connecting pin of first measuring unit
It is electrically connected with the second end of the positive terminal；
First connecting pin of second measuring unit is electrically connected with the cathode for changing battery, and second measurement is single
The second connection end of member is electrically connected with the first end of the negative terminal, the third connecting pin of second measuring unit
It is electrically connected with the second end of the negative terminal.
3. the measuring circuit of the contact resistance of quick change adapter connector as described in claim 1, which is characterized in that the voltage measurement
Unit includes amplifier and ADC special chip.
4. the measuring circuit of the contact resistance of quick change adapter connector as described in claim 1, which is characterized in that the measuring resistance
Voltage measurement unit and the contact resistance voltage measurement unit be synchronized sampling test voltage.
5. the measuring circuit of the contact resistance of quick change adapter connector as described in claim 1, which is characterized in that the measuring unit
Further include a switch, it is described switch for control the current source whether be where the measuring unit power supply.
6. a kind of quick change battery, which is characterized in that the contact electricity including quick change adapter connector described in any one of claim 1 to 5
The measuring circuit of resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821826053.9U CN209707596U (en) | 2018-11-05 | 2018-11-05 | The measuring circuit and quick change battery of the contact resistance of quick change adapter connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821826053.9U CN209707596U (en) | 2018-11-05 | 2018-11-05 | The measuring circuit and quick change battery of the contact resistance of quick change adapter connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209707596U true CN209707596U (en) | 2019-11-29 |
Family
ID=68634973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821826053.9U Active CN209707596U (en) | 2018-11-05 | 2018-11-05 | The measuring circuit and quick change battery of the contact resistance of quick change adapter connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209707596U (en) |
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2018
- 2018-11-05 CN CN201821826053.9U patent/CN209707596U/en active Active
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