CN109884525A - A kind of battery pack contactors adhesion detection device and method - Google Patents
A kind of battery pack contactors adhesion detection device and method Download PDFInfo
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- CN109884525A CN109884525A CN201711248033.8A CN201711248033A CN109884525A CN 109884525 A CN109884525 A CN 109884525A CN 201711248033 A CN201711248033 A CN 201711248033A CN 109884525 A CN109884525 A CN 109884525A
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Abstract
The present invention provides a kind of battery pack contactors adhesion detection device and method, described device includes the constant voltage signal source that battery pack, contactor K2, contactor K3, resistance Rpre, capacitor and voltage are Vs, the one end the contactor K2 connects battery anode, the other end connects capacitor, the contactor K3 and resistance Rpre is connected in parallel after being connected in series with contactor K2, the battery electrode and capacitance connection, the anode in the constant voltage signal source is connect with the anode of the battery pack, and cathode is connect with the cathode of the battery pack；The described method includes: step 1: battery pack does not access, and disconnects contactor K2 and contactor K3；Step 2: injection constant voltage signal source；Step 3: if V2=Vs, at least one adhesion in the contactor K2 and the contactor K3；Step 4: if V2=0, contactor K2 and the non-adhesion of contactor K3.The present invention can accurately judge whether the contactor in battery pack system sticks together under the premise of not being closed any one contactor.
Description
Technical field
The present invention relates to a kind of battery pack contactors adhesion detection devices, and viscous using the battery pack contactors of the device
Even detection method.
Background technique
Battery module, BMS, various contactors and fuse are generally included in battery pack system circuit, battery pack passes through each
Kind contactor connection.When needing to provide electric energy to electrical equipment, BMS controls corresponding contactor closure, so that battery pack connects
Enter power supply circuit；When not needing to energize to electrical equipment, BMS controls corresponding contactor and disconnects, so that battery pack and power supply
Circuit disconnects.
But since contactor needs the folding by thousands of times, and contactor in the long-term course of work
The heat and electric arc that contact generates be easy to cause contacts of contactor to generate adhesion, so that the control in battery pack circuit is caused to fail, it is right
The stability of battery pack system adversely affects.
Currently, battery pack contactors adhesion detection method is mainly to be contacted by the battery pack with circuit as shown in Figure 1
Device adhesion detection device is realized.Under the premise of disconnecting K1 contactor, the viscous of K1 contactor is judged by the voltage of V1
Even situation；Under the premise of being closed K1 contactor, the adhesion situation of K2 and K3 contactor is judged by the voltage of V1 and V2.?
It can be found that being by the above method if K2 contactor has been in adhesion state before starting powers in practical engineering application
Can not judge, in this case, reclose K1 contactor will lead to its also can adhesion, or even there is safety accident.
Summary of the invention
The present invention provides a kind of battery pack contactors adhesion detection device, including battery pack, contactor K2, contactor K3,
Resistance Rpre and capacitor, the one end the contactor K2 connect battery anode, and the other end connects capacitor, the contactor K3 and institute
It states after resistance Rpre is connected in series and is connected in parallel with contactor K2, the battery electrode and capacitance connection further include that voltage is
The constant voltage signal source of Vs, the anode in the constant voltage signal source are connect with the anode of the battery pack, cathode and the battery pack
Cathode connection.
Traditional contactor adhesion detection device needs to access battery pack to judge the adhesion situation of contactor K2 and K3, but
Since battery pack output electric current is larger, the contactor that may cause non-adhesion, which sticks together, even results in safety accident, therefore sets
It sets constant voltage signal source and carrys out simulated battery group, and the voltage Vs value in the constant voltage signal source passes through within the scope of safe voltage
Injection constant voltage signal source can safely and effectively judge the adhesion situation of contactor K2 and K3.
It in one embodiment of the invention, further include current-limiting resistance R, the current-limiting resistance R and constant voltage signal subject string
Connection.The current-limiting resistance R prevents high current under fortuitous event from making to the constant voltage signal source for protecting the constant voltage signal source
At damage.
In one embodiment of the invention, the voltage Vs in the constant voltage signal source is selected from any number between 6~24V
Value.
The constant voltage signal source is within the scope of safe voltage, even if the case where being in contact device adhesion, will not damage institute
It states the component of battery pack system and leads to serious safety accident.
In one embodiment of the invention, any number of the constant voltage signal in 10V, 12V and 15V.
It in one embodiment of the invention, further include constant voltage signal source protection module, the constant voltage signal source protection
Module and the constant voltage signal are source-series.For protecting the constant voltage signal source.
In one embodiment of the invention, the constant voltage signal source protection module include enabled switch, fuse and
At least one of backward dioded.
The constant voltage signal source protection module is for protecting the constant voltage signal source, when the contactor K1 does not stick together
And in the state of disconnecting, the enabled switch can just be closed to inject the constant voltage signal source, in the detection process, if
Something unexpected happened, such as the contactor K1 stick together, since the battery pack voltage rating is believed much larger than the constant pressure
Number source, is easy to happen high current and flows backward to constant voltage signal source and damage to it, therefore constant voltage signal source protection mould need to be arranged
Block is protected, and is protected by the blown fuse, disconnects the constant voltage signal source, or not by the backward dioded
The electric current is allowed to flow backward, it can effective protection constant voltage signal source.
In one embodiment of the invention, further include contactor K1, the contactor K1 be series at battery cell it
Between or battery pack both ends.
It is another object of the present invention to provide a kind of battery pack contactors adhesion detection methods, using any of the above-described institute
The battery pack contactors adhesion detection device stated, the virtual voltage for detecting capacitor is V2, and is included the following steps:
Step 1: battery pack does not access, and disconnects contactor K2 and contactor K3；
Step 2: injecting voltage is the constant voltage signal source of Vs；
Step 3: if V2=Vs, at least one adhesion in the contactor K2 and the contactor K3；
Step 4: if V2=0, contactor K2 and the non-adhesion of contactor K3.
Wherein, V2=Vs refers to theoretic ideal situation, and there are errors in practical operation, as long as therefore " V2 and Vs it
Between difference " with the ratio of " V2 and Vs in the larger value " be less than or equal to 10% i.e. it is believed that meeting the condition of " V2=Vs ".
In battery pack system, the capacitor refers to the bulky capacitor of the electric machine controller input terminal of electrical equipment, to institute
When stating capacitor and being pre-charged, the contactor K3 closure described first, the contactor K2 is disconnected, and the battery pack is the capacitor
Precharge, the resistance Rpre can protect the preliminary filling contactor K3 not stick together, when the voltage at the capacitor both ends arrives
Up to after stationary value, the contactor K2 closure, the contactor K3 is disconnected.Compared to traditional battery pack system contactor adhesion
Detection method, by accessing the constant voltage signal source simulated battery group power voltage supply, and constant voltage signal source is in safe voltage range
It is interior, it can be detected the adhesion situation of contactor without any one of closure contactor, avoid in unknown situation because detecting needs
And being closed a certain contactor leads to the adhesion that may occur even safety accident.
If V2=Vs in the step 3, at least one adhesion in the contactor K2 and the contactor K3,
In specific engineer application, without precisely judging which sticks together in the contactor K2 and contactor K3, but
Ascending curve by analyzing voltage V2 may determine that out: in the contactor K2 non-adhesion contactor K3 adhesion
In the case of, the constant voltage signal source, resistance Rpre and capacitor constitute a RC charge-discharge circuit, and the voltage V2 is by infinite approach
Vs, and the change curve expression formula of V2 t at any time are as follows:
Wherein, C is the capacitance of capacitor, and Rpre is the resistance value of resistance, therefore under the premise of step 3, if voltage V2 with
The change curve of time t meets above-mentioned expression formula, then the only described contactor K3 sticks together, otherwise the contactor K2 adhesion
But can not determine the contactor K3 whether adhesion.
In one embodiment of the invention, battery pack contactors adhesion detection device further includes contactor K1, described
Contactor K1 is series between battery cell or battery pack both ends, and the voltage rating of the battery pack is V, and Vs, detects battery
The virtual voltage of group is V1, further comprises following steps:
Step 5: constant voltage signal source, contactor K1, contactor K2 and contactor K3 are disconnected, then battery pack is accessed；
Step 6: if V1=V, the contactor K1 adhesion；
Step 7: if V1=0, judge the non-adhesion of contactor K1.
Wherein, Vs refers to that the Vs of selection is much smaller than V and the voltage value within the scope of safe voltage, even if there are unknown to glue
Even situation will not cause serious accident to occur, and V1=V refers to theoretic ideal situation, there are error in practical operation,
As long as therefore the ratio of " difference between V1 and V " and " the larger value in V1 and V " is less than or equal to 10% i.e. it is believed that meeting " V1=
The condition of V ".In order to further ensure safety, adhesion caused by occurring to need because of detection is avoided, the present invention should be contacted in judgement
Access battery pack again in the case where the non-adhesion of device K2 and contactor K3 judge contactor K1 whether adhesion.
It, can be under the premise of not being closed any one contactor, accurately after technical solution provided by the invention
Ground judges whether the contactor in battery pack system sticks together, and avoids endangering because of contactor adhesion bring.Can prevent because
High pressure it is improper output lead to not the case where working normally, it is often more important that, can prevent from charging exception when occurred
When filling phenomenon to damage battery, and preventing from occurring in the process of moving abnormal conditions cannot effective cutoff high, lead
Cause the over-discharge phenomenon of safety accident and battery pack.
Detailed description of the invention
Fig. 1 show the contactor adhesion detection circuit schematic diagram of battery pack system in the prior art；
Fig. 2 show the schematic diagram of one embodiment of the present invention；
Fig. 3 show the schematic diagram of another embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described with reference to the accompanying drawing, however the present invention is not restricted to following embodiment.
Embodiment 1
As shown in Fig. 2, the present embodiment provides a kind of battery pack contactors adhesion detection device, including battery pack, contactor
K2, contactor K3, resistance Rpre and capacitor, the one end the contactor K2 connect battery anode, and the other end connects capacitor, described
The contactor K3 and resistance Rpre is connected in parallel after being connected in series with contactor K2, the battery electrode and capacitance connection,
Further include voltage be Vs constant voltage signal source, the constant voltage signal source anode with the battery pack anode connect, cathode and
The cathode of the battery pack connects.
Embodiment 2
As shown in Fig. 2, the present embodiment provides a kind of battery pack contactors adhesion detection device, including battery pack, contactor
K2, contactor K3, resistance Rpre and capacitor, the one end the contactor K2 connect battery anode, and the other end connects capacitor, described
The contactor K3 and resistance Rpre is connected in parallel after being connected in series with contactor K2, the battery electrode and capacitance connection,
It further include the constant voltage signal source and current-limiting resistance R that voltage is Vs=6V, anode and the battery pack in the constant voltage signal source
Anode connection, cathode are connect with the cathode of the battery pack, and the current-limiting resistance R and constant voltage signal are source-series.
Embodiment 3
As shown in Figure 2 and Figure 3, it the present embodiment provides a kind of battery pack contactors adhesion detection device, including battery pack, connects
Tentaculum K2, contactor K3, resistance Rpre and capacitor, the one end the contactor K2 connect battery anode, and the other end connects capacitor,
The contactor K3 and resistance Rpre is connected in parallel after being connected in series with contactor K2, and the battery electrode and capacitor connect
Connect, further include voltage be Vs=12V constant voltage signal source and constant voltage signal source protection module, the constant voltage signal source anode with
The anode connection of the battery pack, cathode connect with the cathode of the battery pack, the constant voltage signal source protection module with it is described
Constant voltage signal is source-series.
Embodiment 4
As shown in figure 3, the present embodiment provides a kind of battery pack contactors adhesion detection device, including battery pack, contactor
K2, contactor K3, resistance Rpre and capacitor, the one end the contactor K2 connect battery anode, and the other end connects capacitor, described
The contactor K3 and resistance Rpre is connected in parallel after being connected in series with contactor K2, the battery electrode and capacitance connection,
It further include the constant voltage signal source and enabled switch that voltage is Vs=20V, anode and the battery pack in the constant voltage signal source
Anode connection, cathode are connect with the cathode of the battery pack, and the enabled switch is source-series with the constant voltage signal.
Embodiment 5
As shown in figure 3, the present embodiment provides a kind of battery pack contactors adhesion detection device, including battery pack, contactor
K2, contactor K3, resistance Rpre and capacitor, the one end the contactor K2 connect battery anode, and the other end connects capacitor, described
The contactor K3 and resistance Rpre is connected in parallel after being connected in series with contactor K2, the battery electrode and capacitance connection,
It further include constant voltage signal source, fuse and the backward dioded that voltage is Vs, anode and the battery in the constant voltage signal source
The anode connection of group, cathode connect with the cathode of the battery pack, the fuse and backward dioded and the constant voltage signal
It is source-series.
Embodiment 6
As shown in Fig. 2, the present embodiment provides a kind of battery pack contactors adhesion detection device, including battery pack, contactor
K1, contactor K2, contactor K3, resistance Rpre and capacitor, the contactor K1 is series between battery cell or battery pack two
End, the one end the contactor K2 connect battery anode, and the other end connects capacitor, and the contactor K3 and the resistance Rpre go here and there
It is connected in parallel after connection connection with contactor K2, the battery electrode and capacitance connection, further includes the constant voltage signal that voltage is Vs
Source, the anode in the constant voltage signal source are connect with the anode of the battery pack, and cathode is connect with the cathode of the battery pack.
Embodiment 7
As shown in Fig. 2, being appointed the present embodiment provides a kind of battery pack contactors adhesion detection method using such as embodiment 1-6
Battery pack contactors adhesion detection device described in one, the virtual voltage for detecting capacitor is V2；And include the following steps:
Step 1: battery pack does not access, and disconnects contactor K2 and contactor K3；
Step 2: the voltage Vs=18V in injection constant voltage signal source；
Step 3: if V2=Vs, at least one adhesion in the contactor K2 and the contactor K3；
Step 4: if V2=0, contactor K2 and the non-adhesion of contactor K3.
Embodiment 8
As shown in Fig. 2, the present embodiment provides a kind of battery pack contactors adhesion detection methods, using as described in Example 6
Battery pack contactors adhesion detection device, the voltage rating of the battery pack is V, and Vs, detects the virtual voltage of battery pack
For V1, and include the following steps:
Step 1: battery pack does not access, and disconnects contactor K2 and contactor K3；
Step 2: the voltage Vs=15V in injection constant voltage signal source；
Step 3: if V2=Vs, at least one adhesion in the contactor K2 and the contactor K3；
Step 4: if V2=0, contactor K2 and the non-adhesion of contactor K3；
Step 5: constant voltage signal source, contactor K1, contactor K2 and contactor K3 are disconnected, then battery pack is accessed；
Step 6: if V1=V, the contactor K1 adhesion；
Step 7: if V1=0, the non-adhesion of contactor K1.
Claims (8)
1. a kind of battery pack contactors adhesion detection device, including battery pack, contactor K2, contactor K3, resistance Rpre and electricity
Hold, the one end the contactor K2 connects battery anode, and the other end connects capacitor, and the contactor K3 and the resistance Rpre go here and there
Connection connection after be connected in parallel with contactor K2, the battery electrode and capacitance connection, it is characterised in that: further include voltage be Vs
Constant voltage signal source, the anode in the constant voltage signal source connect with the anode of the battery pack, and cathode and the battery pack are born
Pole connection.
2. battery pack contactors adhesion detection device according to claim 1, it is characterised in that: it further include current-limiting resistance R,
The current-limiting resistance R and constant voltage signal are source-series.
3. battery pack contactors adhesion detection device according to claim 1, it is characterised in that: the constant voltage signal source
Voltage Vs is selected from any value between 6~24V.
4. battery pack contactors adhesion detection device according to claim 1, it is characterised in that: further include constant voltage signal source
Protective module, the constant voltage signal source protection module and the constant voltage signal are source-series.
5. battery pack contactors adhesion detection device according to claim 4, it is characterised in that: the constant voltage signal source is protected
Protecting module includes at least one of enabled switch, fuse and backward dioded.
6. battery pack contactors adhesion detection device according to claim 1, it is characterised in that: it further include contactor K1,
The contactor K1 is series between battery cell or battery pack both ends.
7. a kind of battery pack contactors adhesion detection method, it is characterised in that: using the battery as described in claim 1-6 is any
Group contactor adhesion detection device, the virtual voltage for detecting capacitor is V2, and is included the following steps:
Step 1: battery pack does not access, and disconnects contactor K2 and contactor K3；
Step 2: injecting voltage is the constant voltage signal source of Vs；
Step 3: if V2=Vs, at least one adhesion in the contactor K2 and the contactor K3；
Step 4: if V2=0, contactor K2 and the non-adhesion of contactor K3.
8. battery pack contactors adhesion detection method according to claim 7, it is characterised in that: the battery pack it is specified
Voltage is V, and V > Vs, and it further comprises following steps that the virtual voltage for detecting battery pack, which is V1:
Step 5: constant voltage signal source, contactor K1, contactor K2 and contactor K3 are disconnected, then battery pack is accessed；
Step 6: if V1=V, the contactor K1 adhesion；
Step 7: if V1=0, the non-adhesion of contactor K1.
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| CN201711248033.8A CN109884525B (en) | 2017-12-01 | 2017-12-01 | Adhesion detection device and method for battery pack contactor |
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| CN201711248033.8A CN109884525B (en) | 2017-12-01 | 2017-12-01 | Adhesion detection device and method for battery pack contactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470981A (en) * | 2019-07-26 | 2019-11-19 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of circuit of determining contactor state, method and device |
| CN111746283A (en) * | 2020-06-12 | 2020-10-09 | 浙江飞碟汽车制造有限公司 | Electric automobile contactor adhesion detection method |
| CN111817590A (en) * | 2020-07-23 | 2020-10-23 | 阳光电源股份有限公司 | Energy storage converter and method for detecting adhesion of slow-start switch of energy storage converter |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150270081A1 (en) * | 2014-03-24 | 2015-09-24 | Ford Global Technologies, Llc | Hv relay sticking control system and method |
| CN105137336A (en) * | 2015-07-29 | 2015-12-09 | 南通大学 | Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault |
| CN105929325A (en) * | 2016-06-15 | 2016-09-07 | 宁德时代新能源科技股份有限公司 | Relay adhesion detection circuit and relay adhesion detection method |
| CN106338688A (en) * | 2016-08-24 | 2017-01-18 | 深圳市科列技术股份有限公司 | Vehicle battery management system main relay adhesion detection circuit and detection method thereof |
| CN106597274A (en) * | 2016-12-29 | 2017-04-26 | 洛阳宝盈智控科技有限公司 | Contactor adhesion determination method |
| CN106696708A (en) * | 2016-11-17 | 2017-05-24 | 天津易鼎丰动力科技有限公司 | Method for judging contactor adhesion failure in high voltage circuit with battery in electric car |
| CN106842006A (en) * | 2016-12-27 | 2017-06-13 | 安徽力高新能源技术有限公司 | A kind of relay adhesion detection method |
| CN106842010A (en) * | 2017-01-23 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | Contactor adhesion detection method, detection device and battery management system |
| CN107089144A (en) * | 2017-05-22 | 2017-08-25 | 德清真牛新能源科技有限公司 | Feedback high voltage connector adhesion fault inspection system that electric automobile is contactless and control inspection method |
-
2017
- 2017-12-01 CN CN201711248033.8A patent/CN109884525B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150270081A1 (en) * | 2014-03-24 | 2015-09-24 | Ford Global Technologies, Llc | Hv relay sticking control system and method |
| CN105137336A (en) * | 2015-07-29 | 2015-12-09 | 南通大学 | Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault |
| CN105929325A (en) * | 2016-06-15 | 2016-09-07 | 宁德时代新能源科技股份有限公司 | Relay adhesion detection circuit and relay adhesion detection method |
| CN106338688A (en) * | 2016-08-24 | 2017-01-18 | 深圳市科列技术股份有限公司 | Vehicle battery management system main relay adhesion detection circuit and detection method thereof |
| CN106696708A (en) * | 2016-11-17 | 2017-05-24 | 天津易鼎丰动力科技有限公司 | Method for judging contactor adhesion failure in high voltage circuit with battery in electric car |
| CN106842006A (en) * | 2016-12-27 | 2017-06-13 | 安徽力高新能源技术有限公司 | A kind of relay adhesion detection method |
| CN106597274A (en) * | 2016-12-29 | 2017-04-26 | 洛阳宝盈智控科技有限公司 | Contactor adhesion determination method |
| CN106842010A (en) * | 2017-01-23 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | Contactor adhesion detection method, detection device and battery management system |
| CN107089144A (en) * | 2017-05-22 | 2017-08-25 | 德清真牛新能源科技有限公司 | Feedback high voltage connector adhesion fault inspection system that electric automobile is contactless and control inspection method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470981A (en) * | 2019-07-26 | 2019-11-19 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of circuit of determining contactor state, method and device |
| CN111746283A (en) * | 2020-06-12 | 2020-10-09 | 浙江飞碟汽车制造有限公司 | Electric automobile contactor adhesion detection method |
| CN111817590A (en) * | 2020-07-23 | 2020-10-23 | 阳光电源股份有限公司 | Energy storage converter and method for detecting adhesion of slow-start switch of energy storage converter |
| CN111817590B (en) * | 2020-07-23 | 2021-12-10 | 阳光电源股份有限公司 | Energy storage converter and method for detecting adhesion of slow-start switch of energy storage converter |
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| CN109884525B (en) | 2021-08-10 |
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