CN208459565U - The state monitoring apparatus of electric vehicle and its power battery and contactor - Google Patents
The state monitoring apparatus of electric vehicle and its power battery and contactor Download PDFInfo
- Publication number
- CN208459565U CN208459565U CN201820762908.XU CN201820762908U CN208459565U CN 208459565 U CN208459565 U CN 208459565U CN 201820762908 U CN201820762908 U CN 201820762908U CN 208459565 U CN208459565 U CN 208459565U
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- bleeder circuit
- contactor
- dividing point
- power supply
- electric vehicle
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Abstract
The utility model provides the state monitoring apparatus of a kind of electric vehicle and its power battery and contactor, and state monitoring apparatus includes power supply, detection module and bleeder circuit；The anode of wherein one end connection power supply of the bleeder circuit, the other end connect the cathode of power supply；The cathode connection contactor of the power supply is used to connect one end of battery body cathode, and the dividing point of bleeder circuit is used to connect the other end of contactor；The dividing point of detection module connection bleeder circuit for detecting the voltage value of bleeder circuit dividing point, and judges according to the voltage value detected the working condition of contactor.Technical solution provided by the utility model, detection module can judge that contactor is in closed state or off-state by the voltage of detection dividing point, and detected voltage signal is not the high-voltage signal of electric vehicle dynamic cell, therefore is able to solve and causes safety poor due to there is high tension voltage when detecting the state of contactor.
Description
Technical field
The utility model belongs to contactor detection technique field, and in particular to a kind of electric vehicle and its power battery and connects
The state monitoring apparatus of tentaculum.
Background technique
With gradualling mature for new energy vehicle technology, electric vehicle using more and more extensive.The power of electric vehicle
It is high tension voltage provided by battery, is provided with high voltage connector in the route of power battery connection vehicle electrical equipment, makees
For the control switch of power battery major loop.
The state of contactor and the security performance of vehicle have close relationship, when contactor breaks down, such as when contact
When there is adhesion in device, it will cause vehicle that can not power off, and voltage provided by power battery is usually all greater than the electricity of 60V
Pressure, the range that the voltage of this grade is able to bear far more than human body.
Therefore, in order to guarantee the normal operation of electric vehicle and the security performance of vehicle, electric vehicle starting or stop
It needs to be monitored the state of contactor when only, the state to ensure contactor is consistent with actual demand.
At present to the detection method of contactor state, the most commonly used is the voltages using test contactor contact both ends, pass through
The state for comparing the voltage at contact both ends to judge contactor is closure or disconnects.This test mode is needed to high tension voltage
It is monitored, not only safety is poor, but also needs to divide voltage to be measured in advance in voltage monitoring, and high pressure is converted into
The range that ADC can be acquired.And the partial pressure that this mode needs is bigger, has large effect to the precision of testing result；
In addition the epidemic situation comparison for the power battery anode high voltage connector that this mode is used to detect electric vehicle is suitable, can not but detect
To the state of cathode contact device.
Utility model content
The purpose of this utility model is to provide a kind of status monitoring of electric vehicle and its power battery and contactor dresses
It sets, for solving in the prior art when detecting the state of contactor due to causing safety is poor to ask there are high tension voltage
Topic.
To achieve the above object, technical solution provided by the utility model is:
A kind of power battery of electric vehicle, including battery body, battery body are used to connect the route of electrical equipment
It is provided with contactor, further includes state monitoring apparatus；
The state monitoring apparatus includes power supply, detection module and bleeder circuit；Wherein one end of the bleeder circuit connects
The anode of power supply is connect, the other end connects the cathode of power supply；The cathode connection contactor of the power supply is negative for connecting battery body
One end of pole, the dividing point of bleeder circuit are used to connect the other end of contactor；
The dividing point of the detection module connection bleeder circuit, for detecting the voltage value of bleeder circuit dividing point, and root
The working condition of contactor is judged according to the voltage value detected.
Technical solution provided by the utility model, detection module can be judged to contact by the voltage of detection dividing point
Device is in closed state or off-state, and detected voltage signal is not the high pressure of the power battery of electric vehicle
Signal, therefore be able to solve and cause safety poor due to there is high tension voltage when detecting the state of contactor.
As the further improvement to connection relationship between bleeder circuit and contactor, the bleeder circuit dividing point connection
Resistance is provided on the route of the contactor other end.
As the further improvement to connection relationship between bleeder circuit and contactor, the bleeder circuit dividing point connection
One way conducting device is provided on the route of the contactor other end.
Control to state monitoring apparatus operating process for convenience, the one way conducting device are diode.
In order to facilitate setting bleeder circuit, as the further improvement to bleeder circuit, the bleeder circuit includes series connection
First resistor and second resistance, the series connection point of first resistor and second resistance is the dividing point of the bleeder circuit.
As the further improvement to one way conducting device, the bleeder circuit dividing point is for connecting one way conducting device
Circuit on be provided with Protection switch.
The electrical equipment of a kind of electric vehicle, including power battery, power battery and vehicle connects；It is connected in power battery
Contactor is provided on the route of vehicle electrical equipment；It further include state monitoring apparatus；
The state monitoring apparatus includes power supply, detection module and bleeder circuit；Wherein one end of the bleeder circuit connects
The anode of power supply is connect, the other end connects the cathode of power supply；The cathode connection contactor of the power supply is negative for connecting battery body
One end of pole, the other end of the dividing point connection contactor of bleeder circuit；
The dividing point of the detection module connection bleeder circuit, for detecting the voltage value of bleeder circuit dividing point, and root
The working condition of contactor is judged according to the voltage value detected.
As the further improvement to connection relationship between bleeder circuit and contactor, it is characterised in that the bleeder circuit
Resistance is provided on the route of the dividing point connection contactor other end.
As the further improvement to connection relationship between bleeder circuit and contactor, the bleeder circuit dividing point connection
One way conducting device is provided on the route of the contactor other end.
Control to state monitoring apparatus operating process for convenience, the one way conducting device are diode.
In order to facilitate setting bleeder circuit, as the further improvement to bleeder circuit, the bleeder circuit includes series connection
First resistor and second resistance, the series connection point of first resistor and second resistance is the dividing point of the bleeder circuit.
As the further improvement to one way conducting device, the bleeder circuit dividing point is for connecting one way conducting device
Circuit on be provided with Protection switch.
A kind of state monitoring apparatus of contactor, which is characterized in that including power supply, detection module and bleeder circuit；It is described
The anode of wherein one end connection power supply of bleeder circuit, the cathode of other end power supply；The cathode of the power supply is to be measured for connecting
One end of contactor, the dividing point of bleeder circuit are used to connect the other end of contactor to be measured；
The dividing point of the detection module connection bleeder circuit, for detecting the voltage value of bleeder circuit dividing point, and root
The working condition of contactor to be measured is judged according to the voltage value detected.
As the further improvement to connection relationship between bleeder circuit and contactor, the bleeder circuit dividing point is used for
It connects and is provided with resistance on the route of the contactor other end to be measured.
As the further improvement to connection relationship between bleeder circuit and contactor, the bleeder circuit dividing point is used for
Even one way conducting device is provided on the route to be measured for connecing the contactor other end.
Control to state monitoring apparatus operating process for convenience, the one way conducting device are diode.
In order to facilitate setting bleeder circuit, as the further improvement to bleeder circuit, the bleeder circuit includes series connection
First resistor and second resistance, the series connection point of first resistor and second resistance is the dividing point of the bleeder circuit.
As the further improvement to one way conducting device, the bleeder circuit dividing point is for connecting one way conducting device
Circuit on be provided with Protection switch.
Detailed description of the invention
Fig. 1 is the catenation principle figure in vehicle embodiments between power battery and vehicle electrical equipment；
Fig. 2 is the schematic diagram that state monitoring apparatus is arranged in vehicle embodiments at cathode contact device.
Specific embodiment
The purpose of this utility model is to provide a kind of status monitoring of electric vehicle and its power battery and contactor dresses
It sets, for solving in the prior art when detecting the state of power battery cathode contactor due to causing to pacify there are high tension voltage
The poor problem of full property.
To achieve the above object, technical solution provided by the utility model is:
A kind of power battery of electric vehicle, including battery body, battery body are used to connect the route of electrical equipment
It is provided with contactor, further includes state monitoring apparatus；
The state monitoring apparatus includes power supply, detection module and bleeder circuit；Wherein one end of the bleeder circuit connects
The anode of power supply is connect, the other end connects the cathode of power supply；The cathode connection contactor of the power supply is negative for connecting battery body
One end of pole, the dividing point of bleeder circuit are used to connect the other end of contactor to be measured；
The dividing point of the detection module connection bleeder circuit, for detecting the voltage value of bleeder circuit dividing point, and root
The working condition of contactor is judged according to the voltage value detected.
The technical solution of the utility model is described further with reference to the accompanying drawing.
Vehicle embodiments:
The present embodiment provides a kind of electric vehicle, electric vehicle is provided with power battery, and power battery is used to be electric vehicle
Power supply for electrical equipment, maintain the operation of vehicle.
The schematic diagram of power battery connection vehicle electrical equipment is as shown in Figure 1, power battery anode connection vehicle electricity consumption is set
It is provided with positive contactor PRELAY on standby route, is provided on the route of power battery cathode connection vehicle electrical equipment negative
Pole contactor NRELAY.
By taking cathode contact device NRELAY as an example, closed state is in order to monitor cathode contact device NRELAY and still disconnects shape
State is provided with state monitoring apparatus at cathode contact device NRELAY.
The structure of state monitoring apparatus is as shown in Fig. 2, include detection module, reference power source Vref, diode D, resistance R1
With resistance R2.Resistance R1 and resistance R2 connect to form bleeder circuit, and reference power source Vref is low-tension supply, and bleeder circuit is wherein
One end connects the anode of reference power source Vref, and the other end connects the side of cathode contact device NRELAY connection power battery；Two poles
The dividing point of the anode connection bleeder circuit of pipe D, cathode connect the other side of cathode contact device NRELAY.
Detection module connects the dividing point of bleeder circuit, and the voltage value by detecting dividing point judges that cathode contact device is in
Closed state or disjunction state, principle are as follows:
When detection module monitors that the voltage value of bleeder circuit dividing point is the tube voltage drop of diode D, it is known that diode D
By resistance R1 short circuit, it is judged as that cathode contact device NRELAY is in closed state at this time；
When detection module monitors that the voltage value of bleeder circuit dividing point is Vref*R1/ (R1+R2), it is judged as two poles
Pipe D by resistance R1 short circuit, is not judged as that cathode contact device NRELAY is in disjunction state at this time.
In the present embodiment, it is provided with Protection switch SWN on the route of bleeder circuit dividing point connection diode D anode,
To prevent the associated parasitic parameter due to the power battery of electric vehicle, the end Link- generates virtual pressure.
In the present embodiment, one way conducting device is using diode D；As other embodiments, one way conducting device
It can be using other components with one-way conduction function, such as switching tube, thyristor；If one way conducting device uses
Be the controllable devices such as switching tube or thyristor, then when the state to cathode contact device NRELAY is monitored, controlling this can
It is in the conductive state to control device.
As other embodiments, detection module can be with the battery management system of power battery or the full-vehicle control of vehicle
Device is integrally disposed.
As other embodiments, diode D can be not provided with or be set as resistance R3；When being not provided with diode D,
Judge that cathode contact device is in closed state or disjunction state, principle are as follows:
When detection module monitors that the voltage value of bleeder circuit dividing point is zero, it is known that resistance R1 short circuit is short-circuited, this
When be judged as that cathode contact device NRELAY is in closed state；
When detection module monitors that the voltage value of bleeder circuit dividing point is Vref*R1/ (R1+R2), it is judged as resistance
R1 is not short-circuited, and is judged as that cathode contact device NRELAY is in disjunction state at this time.
When replacing diode D using resistance R3, judge that cathode contact device is in closed state or disjunction state, principle
It is as follows:
When detection module monitors that the voltage value of bleeder circuit dividing point is Vref*R1/ (R1+R2), it is judged as resistance
R1 is not short-circuited, and is judged as that cathode contact device NRELAY is in disjunction state at this time；
When detection module monitors that the voltage value of bleeder circuit dividing point is Vref*R4/ (R2+R4), wherein R4=R1*
R3/(R1+R3), then it is judged as that diode D by resistance R1 short circuit, is not judged as that cathode contact device NRELAY is in closure at this time
State.
Power battery embodiment:
The present embodiment provides a kind of power battery of power electric vehicle, including power battery ontology, power battery ontologies
Cathode be connected with contactor, contactor is provided with state monitoring apparatus；Power battery ontology, contactor in the present embodiment and
State monitoring apparatus in above-mentioned vehicle embodiments power battery ontology, contactor and state monitoring apparatus it is identical, due to
Power battery ontology, contactor and state monitoring apparatus are discussed in detail in above-mentioned vehicle embodiments, here seldom
It explains.
Installation practice:
The present embodiment provides the states of power battery in a kind of state monitoring apparatus of contactor, with above-mentioned vehicle embodiments
Monitoring device is identical, since the state monitoring apparatus is discussed in detail in above-mentioned vehicle embodiments, seldom does here
Explanation.
Claims (10)
1. a kind of power battery of electric vehicle, including battery body, battery body is used to connect to be set on the route of electrical equipment
It is equipped with contactor, which is characterized in that further include state monitoring apparatus；
The state monitoring apparatus includes power supply, detection module and bleeder circuit；Wherein one end of the bleeder circuit connects electricity
The anode in source, the other end connect the cathode of power supply；The cathode connection contactor of the power supply is for connecting battery body cathode
One end, the dividing point of bleeder circuit are used to connect the other end of contactor；
The dividing point of the detection module connection bleeder circuit, for detecting the voltage value of bleeder circuit dividing point, and according to inspection
The voltage value measured judges the working condition of contactor.
2. a kind of power battery of electric vehicle according to claim 1, which is characterized in that the bleeder circuit dividing point
It connects and is provided with resistance on the route of the contactor other end.
3. a kind of power battery of electric vehicle according to claim 1, which is characterized in that the bleeder circuit dividing point
It connects and is provided with one way conducting device on the route of the contactor other end.
4. a kind of power battery of electric vehicle according to claim 3, which is characterized in that the one way conducting device is
Diode.
5. a kind of power battery of electric vehicle according to claim 1 or 2 or 3, which is characterized in that the bleeder circuit
Including concatenated first resistor and second resistance, the series connection point of first resistor and second resistance is the partial pressure of the bleeder circuit
Point.
6. a kind of power battery of electric vehicle according to claim 1, which is characterized in that the bleeder circuit dividing point
Protection switch is provided on circuit for connecting one way conducting device.
7. the electrical equipment of a kind of electric vehicle, including power battery, power battery and vehicle connects；Vehicle is connected in power battery
Contactor is provided on the route of electrical equipment；It is characterized in that, further including state monitoring apparatus；
The state monitoring apparatus includes power supply, detection module and bleeder circuit；Wherein one end of the bleeder circuit connects electricity
The anode in source, the other end connect the cathode of power supply；The cathode connection contactor of the power supply is for connecting battery body cathode
One end, the other end of the dividing point connection contactor of bleeder circuit；
The dividing point of the detection module connection bleeder circuit, for detecting the voltage value of bleeder circuit dividing point, and according to inspection
The voltage value measured judges the working condition of contactor.
8. a kind of electric vehicle according to claim 7, it is characterised in that the bleeder circuit dividing point connects contactor
Resistance is provided on the route of the other end.
9. a kind of electric vehicle according to claim 7, the line of the bleeder circuit dividing point connection contactor other end
Road is provided with one way conducting device.
10. a kind of state monitoring apparatus of contactor, which is characterized in that including power supply, detection module and bleeder circuit；Described point
The anode of wherein one end connection power supply of volt circuit, the cathode of other end power supply；The cathode of the power supply is for connecting to be measured connect
One end of tentaculum, the dividing point of bleeder circuit are used to connect the other end of contactor to be measured；
The dividing point of the detection module connection bleeder circuit, for detecting the voltage value of bleeder circuit dividing point, and according to inspection
The voltage value measured judges the working condition of contactor to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820762908.XU CN208459565U (en) | 2018-05-21 | 2018-05-21 | The state monitoring apparatus of electric vehicle and its power battery and contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820762908.XU CN208459565U (en) | 2018-05-21 | 2018-05-21 | The state monitoring apparatus of electric vehicle and its power battery and contactor |
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| Publication Number | Publication Date |
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| CN208459565U true CN208459565U (en) | 2019-02-01 |
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| CN201820762908.XU Active CN208459565U (en) | 2018-05-21 | 2018-05-21 | The state monitoring apparatus of electric vehicle and its power battery and contactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579713A (en) * | 2018-05-21 | 2019-12-17 | 郑州深澜动力科技有限公司 | Electric vehicle and state monitoring device of power battery and contactor thereof |
-
2018
- 2018-05-21 CN CN201820762908.XU patent/CN208459565U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579713A (en) * | 2018-05-21 | 2019-12-17 | 郑州深澜动力科技有限公司 | Electric vehicle and state monitoring device of power battery and contactor thereof |
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