CN209505473U - A kind of high-voltage interlocking detection circuit and electric car - Google Patents
A kind of high-voltage interlocking detection circuit and electric car Download PDFInfo
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- CN209505473U CN209505473U CN201920180098.1U CN201920180098U CN209505473U CN 209505473 U CN209505473 U CN 209505473U CN 201920180098 U CN201920180098 U CN 201920180098U CN 209505473 U CN209505473 U CN 209505473U
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Abstract
The utility model provides a kind of high-voltage interlocking detection circuit and electric car, is related to technical field of vehicle safety, the high-voltage interlocking detection circuit includes: controller, including a high-voltage interlocking signal output end and a high-voltage interlocking signal input terminal；Multiple connectors, every a connector includes two connection terminals, and the first connection terminal of each connector is connect with the high-voltage interlocking signal input terminal；Multiple detection resistances, each detection resistance are connected between second connection end of the connector and the high-voltage interlocking signal output end.The embodiment of the utility model realizes monitoring of a pair of of high-voltage interlocking signal to multiple high-voltage interlocking circuits in battery management system, and is able to achieve effective fault location function, reduces production cost and reduces failure risk.
Description
Technical field
The utility model belongs to technical field of vehicle safety, more particularly, to a kind of high-voltage interlocking detection circuit and electronic vapour
Vehicle.
Background technique
Currently, new-energy automobile is increasingly becoming the main vehicle of public selection, it is following along with increasing for vehicle
It is the failure wind in the high-voltage interlocking circuit of battery management system (Battery Management System, referred to as: BMS) control
Electro Magnetic Compatibility caused by danger and whole line arrangement (Electro Magnetic Compatibility's, referred to as: EMC) does
The risks such as disturb.
In the prior art, the high-voltage interlocking function on BMS is by the one-to-one monitoring connector in BMS high-voltage interlocking circuit
Connection status realizes monitoring of the BMS to high-voltage interlocking circuit, and this mode may be implemented high-voltage interlocking function, however this pair
The whole complex circuit of one high-voltage interlocking monitoring device, is easier to the risk for high-voltage interlocking failure occur and economy is poor.
Utility model content
The utility model embodiment is designed to provide a kind of high-voltage interlocking detection circuit and electric car, to solve
Easily there is the risk and warp of high-voltage interlocking failure in the whole complex circuit of one-to-one high-voltage interlocking monitoring device in the prior art
The problem of Ji property difference.
To achieve the goals above, the utility model provides a kind of high-voltage interlocking detection circuit, comprising:
Controller, including a high-voltage interlocking signal output end and a high-voltage interlocking signal input terminal；
Multiple connectors, every a connector include two connection terminals, and the first connection terminal of each connector
It is connect with the high-voltage interlocking signal input terminal；
Multiple detection resistances, each detection resistance are connected to second connection end of the connector and described
Between high-voltage interlocking signal output end.
Wherein, the resistance value of multiple detection resistances is all different.
Wherein, in the controller, concatenated is provided between the high-voltage interlocking signal input terminal and ground terminal
One divider resistance and the second divider resistance.
Wherein, the controller includes a computing unit, and the output end of the computing unit is connected to first partial pressure
Between resistance and second divider resistance.
Wherein, the controller is single-chip microcontroller.
Wherein, the first connection terminal of the connector in connected state and the electrical connection of second connection end.
The utility model embodiment also provides a kind of electric car, including high-voltage interlocking detection circuit as described above.
The above-mentioned technical proposal of the utility model at least has the following beneficial effects:
In the high-voltage interlocking detection circuit of the utility model embodiment, the high-voltage interlocking signal output end of controller passes through more
A detection resistance is connect with second connection end of multiple connectors respectively, and by the first connection terminal of multiple connectors
Connect with the high-voltage interlocking signal input terminal of the controller, thus be respectively formed to the connection status of each connector into
The circuit of row monitoring realizes BMS controller and passes through a pair of of high-voltage interlocking output signal and high-voltage interlocking input signal via more
A connector monitors whether multiple high-voltage interlocking circuits connect, to reduce the quantity of BMS high-voltage interlocking measure loop, simplifies
Whole connection, reduces BMS high-voltage interlocking failure risk, effective positioning failure function and improves high-voltage interlocking inspection
The economy on survey time road.
Detailed description of the invention
Fig. 1 is the schematic diagram of the high-voltage interlocking detection circuit of the utility model embodiment.
Description of symbols:
1- controller, the first connector of 2-, the second connector of 3-, 4- computing unit, the first detection resistance of R1-, R2- second
Detection resistance, the first divider resistance of Ra-, the second divider resistance of Rb-.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.
The utility model embodiment has complex circuit, high pressure mutual for the high-voltage interlocking function on BMS in the prior art
The big and less economical problem of failure risk is locked, a kind of high-voltage interlocking detection circuit is provided, simplifying for whole route is realized, therefore
The effective of barrier position determines and improves economy.
As shown in Figure 1, an embodiment of the utility model provides a kind of high-voltage interlocking detection circuit, comprising:
Controller 1, including a high-voltage interlocking signal output end and a high-voltage interlocking signal input terminal；
Multiple connectors, every a connector include two connection terminals, and the first connection terminal of each connector
It is connect with the high-voltage interlocking signal input terminal；
Multiple detection resistances, each detection resistance are connected to second connection end of the connector and described
Between high-voltage interlocking signal output end.
In the high-voltage interlocking detection circuit of the present embodiment, the first connection terminal in every a connector with the height of controller
The connection of interlocking signal input terminal is pressed, and second connection end in every a connector passes through a detection resistance and the control respectively
High-voltage interlocking signal output end connection in device processed, so that passing through a pair of of high-voltage interlocking output signal and height in the controller
Pressure interlocking input signal monitors whether multiple high-voltage interlocking circuits connect via multiple connectors, relative to one-to-one prison
It surveys, has simplified whole route, reduced high-voltage interlocking failure risk, precisely detect the high-voltage interlocking circuit of failure, and improve
Economy.
High-voltage interlocking circuit is connected using the high-voltage interlocking detection circuit of the utility model embodiment in the following, illustrating
The process of status monitoring.
When high-voltage interlocking circuit, which is in, connects intact state, the connection corresponding with the high-voltage interlocking circuit
First connection terminal of device is connected to second connection end, so that the high-voltage interlocking signal output end, detection electricity
Resistance, the connector and the high-voltage interlocking signal input terminal form the measure loop of a closure.It is powered in the controller 1
Afterwards, the high-voltage interlocking signal output end exports a predeterminated voltage signal, it is preferred that the predeterminated voltage signal is+5V, described
Controller 1 can acquire the voltage of the high-voltage interlocking signal input terminal in real time, and according to pre-stored in the controller 1
Voltage signal and the table of comparisons of resistance value determine total resistance value of presently described high-voltage interlocking detection circuit, thus according to total resistance
Value determines the connector for being currently at disconnection.
Specifically, the resistance value of multiple detection resistances in the high-voltage interlocking detection circuit of the utility model embodiment is equal
It is not identical.
In the utility model embodiment, different resistance values is set by the resistance value of multiple detection resistances, thus just
The branch in current not formed circuit is determined in total resistance value according to the high-voltage interlocking detection circuit currently calculated, is realized to mistake
The accurate detection in the high-voltage interlocking circuit of effect.
By taking Fig. 1 as an example, there are two detection resistances for setting in the high-voltage interlocking detection circuit, and assume first detection
The resistance value of resistance R1 is 40 Ω, and the resistance value of the second detection resistance R2 is 20 Ω, when the first connector 2 and the second connector 3
When being in connected state, the first detection resistance R1 and the second detection resistance R2 are parallel relationship, if the control
Device 1 determines total electricity in the high-voltage interlocking detection circuit according to the voltage of the high-voltage interlocking signal input terminal currently acquired
When resistance value is 13.33 Ω, determine that first connector 2 and second connector 3 are in connected state, with described first
The corresponding high-voltage interlocking circuit of connector 2 and high-voltage interlocking circuit corresponding with second connector 3 are in without reason
The connection status of barrier；When determining the all-in resistance in the high-voltage interlocking detection circuit is 40 Ω, second connector 3 is determined
It is in an off state, high-voltage interlocking circuit corresponding with second connector 3 is in faulty off-state；Work as determination
When total resistance value in the high-voltage interlocking detection circuit is 20 Ω, determine that first connector 2 is in an off state, with institute
It states the corresponding high-voltage interlocking circuit of the first connector 2 and is in faulty off-state.
Further, it in the controller 1, is provided with and connects between the high-voltage interlocking signal input terminal and ground terminal
The first divider resistance Ra and the second divider resistance Rb.
The first divider resistance Ra and the second partial pressure electricity are set in the controller 1 in the utility model embodiment
Rb is hindered, may be implemented to determine in the high-voltage interlocking detection circuit by the voltage for acquiring the both ends the second divider resistance Rb
Total resistance value, reduce the table of comparisons of pre-stored voltage signal and resistance value in the controller.
Specifically, can be according to formulaObtain total resistance value of multiple detection resistances, and according to
Total resistance value of multiple detection resistances determines the connector being in an off state, and realizes the essence to the high-voltage interlocking circuit of failure
Quasi- detection.Wherein, VbFor the voltage value at the both ends the second divider resistance Rb, VoutIt is defeated for the high-voltage interlocking signal output end
Voltage value out, RAlwaysFor total resistance value of multiple detection resistances, RaFor the resistance value of the first divider resistance Ra, RbIt is described second
The resistance value of divider resistance Rb.
More specifically, the controller 1 includes a computing unit 4, and the output end of the computing unit 4 is connected to described the
Between one divider resistance Ra and the second divider resistance Rb.For the electricity according to the both ends the second divider resistance Rb of acquisition
Press VbWith the formula of total resistance value of the multiple detection resistances of above-mentioned calculating, determine be not attached to the high-voltage interlocking signal output end and
Detection resistance between the high-voltage interlocking signal input terminal, thus finally determine the connector being in an off state, realization pair
The accurate detection in the high-voltage interlocking circuit of failure.
Wherein, in order to further decrease production cost, the controller 1 in the utility model embodiment is preferably one
Single-chip microcontroller, alternatively, directly realizing the defeated of output high-voltage interlocking signal using the partial function in the BMS controller in electric car
Out, the acquisition of the input voltage of high-voltage interlocking signal input terminal and total resistance values of multiple detection resistances is calculated, it is final to realize
Accurate detection to the high-voltage interlocking circuit of failure.
Another embodiment of the utility model provides a kind of electric car, including high-voltage interlocking as described above detection electricity
Road.
Correspondingly, the high-voltage interlocking detection circuit due to the utility model embodiment is applied to electric car, this reality
A kind of electric car is additionally provided with new embodiment, wherein realization embodiment described in above-mentioned high-voltage interlocking detection circuit is suitable
For can also reach identical technical effect in the embodiment of the electric car.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (7)
1. a kind of high-voltage interlocking detection circuit characterized by comprising
Controller (1), including a high-voltage interlocking signal output end and a high-voltage interlocking signal input terminal；
Multiple connectors, every a connector include two connection terminals, and the first connection terminal of each connector and institute
State the connection of high-voltage interlocking signal input terminal；
Multiple detection resistances, each detection resistance be connected to the connector second connection end and the high pressure
Between interlocking signal output end.
2. high-voltage interlocking detection circuit according to claim 1, which is characterized in that the resistance value of multiple detection resistances is equal
It is not identical.
3. high-voltage interlocking detection circuit according to claim 1, which is characterized in that in the controller (1), the height
Concatenated first divider resistance (Ra) and the second divider resistance (Rb) are provided between pressure interlocking signal input terminal and ground terminal.
4. high-voltage interlocking detection circuit according to claim 3, which is characterized in that the controller (1) includes a calculating
Unit (4), the output end of the computing unit (4) are connected to first divider resistance (Ra) and second divider resistance
(Rb) between.
5. high-voltage interlocking detection circuit according to claim 1, which is characterized in that the controller (1) is single-chip microcontroller.
6. high-voltage interlocking detection circuit according to claim 1, which is characterized in that the connector in connected state
The first connection terminal and second connection end electrical connection.
7. a kind of electric car, which is characterized in that including high-voltage interlocking detection circuit such as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180098.1U CN209505473U (en) | 2019-01-31 | 2019-01-31 | A kind of high-voltage interlocking detection circuit and electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920180098.1U CN209505473U (en) | 2019-01-31 | 2019-01-31 | A kind of high-voltage interlocking detection circuit and electric car |
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| Publication Number | Publication Date |
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| CN209505473U true CN209505473U (en) | 2019-10-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111422068A (en) * | 2020-03-23 | 2020-07-17 | 奇瑞新能源汽车股份有限公司 | Electric vehicle loop interlocking circuit and diagnosis method thereof |
-
2019
- 2019-01-31 CN CN201920180098.1U patent/CN209505473U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111422068A (en) * | 2020-03-23 | 2020-07-17 | 奇瑞新能源汽车股份有限公司 | Electric vehicle loop interlocking circuit and diagnosis method thereof |
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