CN205786951U - A kind of low pressure interlocking testing circuit - Google Patents
A kind of low pressure interlocking testing circuit Download PDFInfo
- Publication number
- CN205786951U CN205786951U CN201620716358.9U CN201620716358U CN205786951U CN 205786951 U CN205786951 U CN 205786951U CN 201620716358 U CN201620716358 U CN 201620716358U CN 205786951 U CN205786951 U CN 205786951U
- Authority
- CN
- China
- Prior art keywords
- resistance
- interlock end
- tension connector
- negative pole
- low pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Secondary Cells (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
This utility model relates to electric vehicle engineering field, it is specifically related to a kind of low pressure interlocking testing circuit, this circuit includes: one or more high pressure connection members in automotive high voltage circuit, also includes: the measurement resistance that the high-tension connector that reference power supply, reference resistance, battery management system connect one to one with described high pressure connection member and high-tension connector connect one to one；Described high-tension connector includes: interlock end and the high-pressure side being connected with automotive high voltage circuit；Described interlock end includes: positive pole interlock end and negative pole interlock end, measure resistance to be connected between described high-tension connector positive pole interlock end and negative pole interlock end, each positive pole interlock end ground connection, each negative pole interlock end is connected with described reference resistance one end, battery management system after connecting respectively, the other end of reference resistance is connected with described reference power supply, by this utility model, improve the reliability that high voltage loop of electric automobile high-voltage connector connects.
Description
Technical field
This utility model relates to electric vehicle engineering field, is specifically related to a kind of low pressure interlocking testing circuit.
Background technology
One of electric automobile important directions having had become as development of automobile, in existing automotive engineering scheme, electronic
The high-voltage safety of automobile is related to the use safety of car load.As it is shown in figure 1, in electric automobile high-voltage connection procedure, height pushes back
Road 1 ' connects and has one or more high-tension connector 2 ', and each high-tension connector 2 ' all includes that positive extra-high voltage connects terminal
21 ' are connected terminal 22 ' with negative pole high pressure, connect not when the most positive extra-high voltage connection terminal 21 ' or negative pole high pressure connect terminal 22 '
Time firmly, it will cause high tension loop to connect insecure problem.
In existing technical scheme, complete detection is not accomplished in high tension loop 1 ', such as when high tension loop 1 ' occurs
Open circuit, it is impossible to recognizing particular location that high pressure open circuit occur, the reliability that therefore high tension loop connects is relatively low.
Utility model content
This utility model provides a kind of low pressure interlocking testing circuit, to improve the connection of high voltage loop of electric automobile mesohigh
The reliability that device connects.
For achieving the above object, this utility model provides following technical scheme:
A kind of low pressure interlocking testing circuit, including: one or more high pressure connection members, institute in high voltage loop of electric automobile
State circuit also to include: reference power supply, reference resistance, battery management system connect one to one with described high pressure connection member
The measurement resistance that high-tension connector and high-tension connector connect one to one；Described high-tension connector includes: interlock end and with
The high-pressure side that high voltage loop of electric automobile connects；Described interlock end includes: positive pole interlock end and negative pole interlock end, measures resistance even
Being connected between described high-tension connector positive pole interlock end and negative pole interlock end, each positive pole interlock end ground connection, each negative pole interlocks
End is connected with described reference resistance one end, battery management system after connecting respectively, the other end of reference resistance and described benchmark electricity
Source connects.
Preferably, the resistance of each measurement resistance is identical.
Preferably, described reference resistance is identical with the resistance of described measurement resistance.
Preferably, described reference power supply is 5V.
The beneficial effects of the utility model are:
This utility model provides
During high tension loop connects, if occurring in that, there is open circuit in high-pressure system loop, may diagnose that concrete open circuit position
Put, hence for the reliability improving high voltage loop of electric automobile connection, there is positive role.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation that prior art mesohigh connects.
Fig. 2 is the circuit diagram of this utility model embodiment low pressure interlocking measure loop.
Fig. 3 is signal processing circuit in this utility model embodiment.
Labelling in accompanying drawing:
1 ', high tension loop 2 ', high-tension connector 21 ', positive extra-high voltage connect terminal 22 ' negative pole high pressure connect terminal 1,
High tension loop 2, high-tension connector 21, positive pole high-pressure side 22, negative pole high-pressure side 23, positive pole interlock end 24, negative pole interlock end
R0, reference resistance VREF, reference power supply R1, measurement resistance Rn-1, measurement resistance Rn, measurement resistance
Detailed description of the invention
In order to make those skilled in the art can be further understood that feature of the present utility model and technology contents, below in conjunction with
This utility model embodiment is elaborated by drawings and embodiments.
It is the circuit diagram of this utility model embodiment low pressure interlocking measure loop as shown in Figure 2, including: electric automobile high-voltage
One or more high pressure connection member (not shown) in loop 1, described circuit also includes: reference power supply VREF, reference resistance
High-tension connector 2 that R0, battery management system connect one to one with described high pressure connection member and high-tension connector 2 are one by one
The corresponding measurement resistance (R1 ... Rn-1, Rn) connected；Described high-tension connector includes: interlock end and returning with electric automobile high-voltage
The high-pressure side that road connects；Described interlock end includes: positive pole interlock end 23 and negative pole interlock end 24, measures resistance and is connected to described height
Between pressure adapter positive pole interlock end 23 and negative pole interlock end 24, each positive pole interlock end 23 ground connection, each negative pole interlock end 24
It is connected with described reference resistance R0 one end, battery management system respectively after connection, the other end of reference resistance R0 and described benchmark
Power supply VREF connects.
It should be noted that in this utility model embodiment, high-pressure side includes: positive pole high-pressure side 21 and negative pole high-pressure side
22, positive pole high-pressure side 21 and negative pole high-pressure side 22 are both connected in high tension loop 1.
Further, during this utility model is implemented, the interlock end of high-tension connector is for feeding back high-tension connector high-pressure side
Connection status, i.e. positive pole interlock end 23 is for feeding back the connection status of positive pole high-pressure side 21, and negative pole interlock end 24 is used for feeding back negative
The connection status of high pressure side 22, described connection status includes: has connected and has disconnected；Owing to, in this utility model, interlock end is used
In feedback high-pressure side connection status, therefore, in this utility model, low pressure interlocking testing circuit it may also is that measure resistance (R1 ...
Rn-1, Rn) it is connected between described high-tension connector positive pole interlock end 23 and negative pole interlock end 24, each negative pole interlock end 24 connects
Ground, each positive pole interlock end 23 is connected with described reference resistance R0 one end, battery management system after connecting respectively, reference resistance R0
The other end be connected with described reference power supply VREF.
Specifically, the resistance of each measurement resistance is identical.Such as, the resistance measuring resistance is 5K Ω, certainly, measures resistance
Resistance can also be other values.
Specifically, described reference resistance R0 is identical with the resistance of described measurement resistance.Such as, the resistance measuring resistance is 5K
During Ω, reference resistance is also 5K Ω.
Specifically, described reference power supply VREF is 5V.
Specifically, this utility model embodiment low pressure interlocking measure loop Cleaning Principle is: battery management system is adopted in real time
The analogue signal of collection low pressure interlocking measure loop.The value of concrete analogue signal is: (VREF*R0/n)/(1+R0/n), works as high pressure
There is the situation of open circuit in any high-tension connector 2 in loop, and the value of the analogue signal that battery management system collects will not exist
It is (VREF*R0/n)/(1+R0/n), and by the analogue signal that battery management system collects, can confirm that closest to base
One high-tension connector open circuit of quasi-resistance one end.
Specifically, battery management system can also be by gathering digital signal, and detection is closest to the one of reference resistance one end
Individual high-tension connector open circuit conditions, specific implementation increases such as Fig. 3 institute between negative pole interlock end 24 and battery management system
The circuit shown, wherein, in Fig. 3, feedback detection mouth electrically connects with negative pole interlock end 24, I/O detection mouth and the one of battery management system
Individual I/O port connects.Further, in order to understand the grafting situation of each high-tension connector in high tension loop in more detail, this practicality is new
In type embodiment, the unearthed interlock end (negative pole interlock end 24 or positive pole interlock end 23) of each high-tension connector all can connect
Connect a signal processing circuit as shown in Figure 3, and the I/O detection mouth of this signal processing circuit can be with any one intelligence
The I/O port of chip connects (such as, intelligent chip is controller or entire car controller or the single-chip microcomputer etc. of battery management system), with
Making this intelligent chip can detect the connection of all high-tension connectors of whole high tension loop in real time, such as, in Fig. 3, R5 is
100 Ω, CC3 are 4.7nF.
The low pressure interlocking measure loop that this utility model embodiment provides, improves high voltage loop of electric automobile mesohigh even
Connect the reliability and safety that device connects, it is to avoid charging plug causes the warm swap of high-voltage contact because abnormal coming off.
Being described in detail this utility model embodiment above, detailed description of the invention used herein is to this practicality
Novel being set forth, the explanation of above example is only intended to help and understands this utility model；Simultaneously for this area one
As technical staff, according to thought of the present utility model, the most all will change, to sum up
Described, this utility model content should not be construed as restriction of the present utility model.
Claims (4)
1. a low pressure interlocking testing circuit, including: one or more high pressure connection members in high voltage loop of electric automobile, it is special
Levying and be, described circuit also includes: reference power supply, reference resistance, battery management system and described high pressure connection member one a pair
The measurement resistance that the high-tension connector that should connect and high-tension connector connect one to one；Described high-tension connector includes: interlocking
End and the high-pressure side being connected with high voltage loop of electric automobile；Described interlock end includes: positive pole interlock end and negative pole interlock end, surveys
Amount resistance is connected between described high-tension connector positive pole interlock end and negative pole interlock end, each positive pole interlock end ground connection, each
Negative pole interlock end is connected with described reference resistance one end, battery management system after connecting respectively, the other end of reference resistance and institute
State reference power supply to connect.
Low pressure the most according to claim 1 interlocking testing circuit, it is characterised in that each resistance measuring resistance is identical.
Low pressure the most according to claim 2 interlocking testing circuit, it is characterised in that described reference resistance measures electricity with described
The resistance of resistance is identical.
4. interlock testing circuit according to the low pressure described in any one of claims 1 to 3, it is characterised in that described reference power supply is
5V。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716358.9U CN205786951U (en) | 2016-07-07 | 2016-07-07 | A kind of low pressure interlocking testing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716358.9U CN205786951U (en) | 2016-07-07 | 2016-07-07 | A kind of low pressure interlocking testing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786951U true CN205786951U (en) | 2016-12-07 |
Family
ID=58125128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620716358.9U Active CN205786951U (en) | 2016-07-07 | 2016-07-07 | A kind of low pressure interlocking testing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786951U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466354A (en) * | 2019-08-29 | 2019-11-19 | 珠海广通汽车有限公司 | Connector state determines method and relevant apparatus |
| CN110857964A (en) * | 2018-08-08 | 2020-03-03 | 上汽通用汽车有限公司 | High-voltage interlocking loop, method for detecting electrical continuity fault by using high-voltage interlocking loop, computer storage medium and electric vehicle |
-
2016
- 2016-07-07 CN CN201620716358.9U patent/CN205786951U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857964A (en) * | 2018-08-08 | 2020-03-03 | 上汽通用汽车有限公司 | High-voltage interlocking loop, method for detecting electrical continuity fault by using high-voltage interlocking loop, computer storage medium and electric vehicle |
| CN110466354A (en) * | 2019-08-29 | 2019-11-19 | 珠海广通汽车有限公司 | Connector state determines method and relevant apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107255782B (en) | A kind of high-voltage interlocking detection circuit and interlocking signal detection method | |
| CN105071513B (en) | A kind of vehicle-mounted formula charging system of electric vehicle | |
| CN207910511U (en) | Battery charge control circuit and dust catcher | |
| CN110632448B (en) | Wiring detection method for three-phase three-wire metering device with mutual inductor | |
| CN205786951U (en) | A kind of low pressure interlocking testing circuit | |
| CN203299316U (en) | Line sequence detector | |
| CN101179199A (en) | Terminal and charging method thereof | |
| CN209417199U (en) | Detection circuit | |
| CN106299180A (en) | Electric tool and the combination of battery bag | |
| CN207742316U (en) | Battery detection circuit and battery management system | |
| CN109490697A (en) | A kind of detection circuit device for electric vehicle fast charge socket | |
| CN205039491U (en) | High -voltage power distribution box of electric vehicle | |
| CN104237702A (en) | Automobile bonding point detecting device and automobile bonding point detecting method | |
| CN204651614U (en) | A kind of data wire with charging instruction | |
| CN208190282U (en) | A kind of protection system for the straight charging circuit of battery | |
| CN206638766U (en) | Charging electric vehicle rifle plug and vehicle socket connection reliability detection means | |
| CN109031004A (en) | A kind of USB charging line detector | |
| CN204989361U (en) | Connector breaks away from detection device | |
| CN208738876U (en) | A kind of charging unit | |
| CN210572628U (en) | Device for testing feedback circuit of PG motor | |
| CN209505473U (en) | High-voltage interlocking detection circuit and electric automobile | |
| CN201804038U (en) | Voltage and current measuring device of entire car | |
| CN203455403U (en) | Battery voltage detection circuit based on Zener diode | |
| CN208571123U (en) | A kind of arrangements of electric connection | |
| CN103116075B (en) | Intelligent phase-checking device for P-type power distribution station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automotive Co., Ltd. |