CN108058599A - A kind of automobile and its high-voltage interlocking detection circuit - Google Patents
A kind of automobile and its high-voltage interlocking detection circuit Download PDFInfo
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- CN108058599A CN108058599A CN201711339613.8A CN201711339613A CN108058599A CN 108058599 A CN108058599 A CN 108058599A CN 201711339613 A CN201711339613 A CN 201711339613A CN 108058599 A CN108058599 A CN 108058599A
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- voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of high-voltage interlocking detection circuits, including interlocking detection device and N number of component end resistance for corresponding in N number of high voltage component, component end resistance connects to form detection branch with high-tension connector, the low voltage connector in high voltage component, it connects after all detection branch parallel connections with interlocking detection device, the 2 of detection branchNUnder kind break-make situation, the parallel resistance value after all detection branch parallel connections is corresponding with 2NKind, interlocking detection device can judge the detection branch to break down according to parallel resistance value, and N ＞ 1 and N are positive integer.Such high-voltage interlocking detection circuit is when being detected, if high voltage component causes high-voltage interlocking open fault because of connector issue, interlocking detection device can accurately locking be that open fault occurs for which high voltage component or which high voltage component according to its relation between the parallel resistance value of detection branch, can improve solution efficiency.The invention also discloses a kind of automobiles for including above-mentioned high-voltage interlocking detection circuit.
Description
Technical field
The present invention relates to automotive safeties to protect field, more particularly to a kind of high-voltage interlocking detection circuit.In addition, the present invention is also
It is related to a kind of automobile for including above-mentioned high-voltage interlocking detection circuit.
Background technology
New-energy automobile exploitation overriding concern factor is safety.When electric vehicle key is switched to " ON ", power battery
Closing relay exports high pressure, and high voltage component 04 prepares to start to work and carried high-voltage electricity.Vehicle high-pressure system is one exhausted
The system of edge closing, but under vehicle maintenance and some particular surroundings, if high voltage component 04 and its high-tension connector 01 are without just
Often connection, can cause high pressure to expose, thus there are the risks that personnel get an electric shock.
High-voltage interlocking is a kind of high-pressure system method for security protection used by new-energy automobile, this method be by using
Low pressure electric signal checks the electrical integrity situation of the component of entire high-pressure system, conducting wire and connector.When generation interlocking event
After barrier, it is necessary to assure electricity and high-pressure system cannot power on before troubleshooting under vehicle high-pressure system, while trigger corresponding alert
Show signal.
At present, the high-voltage interlocking of new-energy automobile is usually realized according to method shown in FIG. 1.It is assumed that vehicle high-pressure system
A total of N number of high voltage component 04, each high voltage component 04 include a high-tension connector 01 and a low voltage connector 02.By mutual
It locks detection device 03 and draws a low-voltage signal line, N number of high voltage component 04 of vehicle high-pressure system is connected as shown in schematic diagram
After return interlocking detection device 03.It interlocks detection device 03 and low-voltage signal line forms high-voltage interlocking measure loop.Interlocking inspection
Survey the break-make situation that device 03 detects high-voltage interlocking measure loop in real time.When the high-tension connector 01 of any one high voltage component 04
Or low voltage connector 02 disconnect when, interlocking detection device 03 can detect high-voltage interlocking measure loop open a way, wherein, N ＞ 1 and
N is positive integer.
Major defect existing for the implementation method of above-mentioned high-voltage interlocking is：High-voltage interlocking measure loop is cascaded structure,
The break-make in entire high-voltage interlocking circuit can only be detected, can not judge that the interlocking connection of specifically which high voltage component 04 disconnects.
After high-voltage interlocking failure occurs in vehicle, interlocking event can only occur to lock by investigating the method for each high voltage component 04 one by one
The position of barrier.If the high voltage component 04 of vehicle high-pressure system is more, can to investigate and solve the whole of high-voltage interlocking failure problems
A process takes longer, and efficiency is very low.
Therefore, it is accurate after high-voltage interlocking open fault caused by generation connector issue in high voltage component 04 how to realize
The high voltage component 04 of interlocking open circuit occurs for locking, is the current technical issues that need to address of those skilled in the art.
The content of the invention
In view of this, the object of the present invention is to provide a kind of high-voltage interlocking detection circuit, can occur in high voltage component
Accurately the high voltage component of interlocking open circuit occurs for locking after high-voltage interlocking open fault caused by connector issue.The present invention's is another
Purpose is to provide a kind of automobile for including above-mentioned high-voltage interlocking detection circuit, connector issue can occur in high voltage component and draw
Accurately the high voltage component of interlocking open circuit occurs for locking after the high-voltage interlocking open fault risen.
To achieve the above object, the present invention provides following technical solution：
A kind of high-voltage interlocking detection circuit is arranged on N number of high voltage component including interlocking detection device and N number of one-to-one corresponding that is used for
In component end resistance, the component end resistance connects to be formed with high-tension connector, the low voltage connector in the high voltage component
Detection branch is connected after all detection branch parallel connections with the interlocking detection device, the 2 of the detection branchNKind is logical
In the case of disconnected, the parallel resistance value after all detection branch parallel connections is corresponding with 2NKind, the interlocking detection device being capable of root
According to the detection branch that breaks down of parallel resistance value judgement, wherein, N ＞ 1 and N is positive integer.
Preferably, each component end resistance is respectively provided with a resistor, and the resistance value of each component end resistance is equal
It differs.
Preferably, the interlocking detection device includes：
Sampling resistor；
Voltage detection module, for detecting the voltage at the sampling resistor both ends in real time；
Power supply module, the sampling resistor to be formed with connecting again with the power supply module after the voltage detection module parallel connection
Series arm, forming circuit of connecting after all detection branch parallel connections with the series arm.
Preferably, the build-out resistor being serially connected in the series arm is further included, for adjusting the circuit total resistance value
To adjust the circuit power consumption.
Preferably, the build-out resistor is the adjustable resistor of resistance value.
Preferably, host computer is further included, for storing the corresponding pass between the sampling resistor and the parallel resistance value
It is, and the fault condition of the high voltage component, the host computer signal is shown according to the testing result of the voltage detection module
It is connected to the voltage detection module.
A kind of automobile, including the high-voltage interlocking detection circuit as described in above-mentioned any one.
High-voltage interlocking detection circuit provided by the invention is when being detected, if high voltage component causes because of connector issue
High-voltage interlocking open fault, interlocking detection device can accurately be locked according to its relation between the parallel resistance value of detection branch
Surely it is that open fault occurs in which high voltage component or which high voltage component, staff is enable directly to go to solve failure,
Judge the position of generation interlock fault without investigating each high voltage component one by one, so as to improve solution efficiency, shorten and take, side
Method principle is simple, and reliable feasible.
The automobile provided by the invention for including above-mentioned high-voltage interlocking detection circuit, can occur connector in high voltage component
Accurately the high voltage component of interlocking open circuit occurs for locking after high-voltage interlocking open fault caused by problem.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention, for those of ordinary skill in the art, without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the connection figure of high-voltage interlocking detection circuit in the prior art；
Fig. 2 is the connection figure of high-voltage interlocking detection circuit provided by the present invention；
Fig. 3 is the inside connection figure that detection device is interlocked in high-voltage interlocking detection circuit provided by the present invention.
In Fig. 1,01- high-tension connectors, 02- low voltage connectors, 03- interlocking detection devices, 04- high voltage components；
In Fig. 2 and Fig. 3,1- high-tension connectors, 2- low voltage connectors, 3- interlocking detection devices, 31- power supply modules, 32- electricity
Press detection module, 33- sampling resistors, 34- build-out resistors, 4- high voltage components, 5- component end resistance, 6- equivalent parallel all-in resistances.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
The core of the present invention is to provide a kind of high-voltage interlocking detection circuit, and connector issue can occur in high voltage component
Accurately the high voltage component of interlocking open circuit occurs for locking after caused high-voltage interlocking open fault.Another core of the present invention is to provide
A kind of automobile for including above-mentioned high-voltage interlocking detection circuit, high pressure caused by connector issue can occurring in high voltage component are mutual
Lock the high voltage component that accurately locking generation interlocking is opened a way after open fault.
It please refers to Fig.2, Fig. 2 is the connection figure of high-voltage interlocking detection circuit provided by the present invention.
In a kind of specific embodiment of high-voltage interlocking detection circuit provided by the present invention, including being used to detect high voltage component 4
The interlocking detection device 3 of open fault, N number of component end resistance 5 being arranged on for one-to-one corresponding in N number of high voltage component 4, i.e.
Component end resistance 5 there are one being set in one high voltage component 4.High-tension connector 1, low pressure in component end resistance 5 and high voltage component 4
The series connection of connector 2 forms detection branch, and Rankine-Hugoniot relations can be set on demand, for example, component end resistance 5 specifically is arranged on high pressure
Between connector 1 and low voltage connector 2, from high-tension connector 1 is not connected with one end of component end resistance 5, low voltage connector 2 does not connect
One end of relay part end resistance 5 is respectively as the tie point of the detection branch and other detection branch.All detection branch are in parallel
It connects afterwards with interlocking detection device 3.
In a high voltage component 4, either high-tension connector 1 or low voltage connector 2 does not connect, component end resistance 5
The circuit that will be formed with interlocking detection device 3 disconnects.When the connector of all high voltage components 4 effectively connects, own
Resistance value=(R of the equivalent parallel all-in resistance 6 of detection branch1×R2×…×RN-1×RN)/(R1+R2+…+RN-1+RN)；Work as kth
When the connector of a high voltage component 4 disconnects, resistance value=(R of equivalent parallel all-in resistance 61×R2×…×Rk-1×Rk+1×…×
RN-1×RN)/(R1+R2+…+Rk-1+Rk+1+…+RN-1+RN), wherein 1≤k≤N, k are positive integer.To every single high voltage component 4,
Whether its component end resistance 5, which accesses interlocking measure loop, 2 kinds of states；Easily card, to N number of component end resistance of N number of high voltage component 4
Whether 5 access interlocking measure loop a total of 2NKind state.By the resistance value for reasonably choosing component end resistance 5 so that each
The corresponding equivalent parallel all-in resistance resistance value of state is unique and is not mutually equal, then the 2 of detection branchNUnder kind break-make situation, own
Parallel resistance value after detection branch parallel connection is corresponding with 2NKind, wherein, N ＞ 1 and N are positive integer.The open circuit of each high voltage component 4
Situation corresponds to a parallel resistance value, that is, corresponds to a kind of 4 break-make electricity condition of high voltage component, interlocking detection device 3 is according to electricity in parallel
Resistance value can determine whether the detection branch to break down and high voltage component 4.
High-voltage interlocking detection circuit in the present embodiment is when being detected, if high voltage component 4 draws because of connector issue
High-voltage interlocking open fault is played, interlocking detection device 3 can be accurate according to its relation between the parallel resistance value of detection branch
Really locking is that open fault occurs in which high voltage component 4 or which high voltage component 4, and staff is enable directly to go to solve
Failure judges the position of generation interlock fault without investigating each high voltage component 4 one by one, so as to improve solution efficiency, shortens
It takes, Method And Principle is simple, and reliable feasible.
Wherein, can be attached between detection branch and interlocking detection device 3 by low voltage wiring harness.
Specifically, each component end resistance 5 can have there are one resistor, and the resistance value of all parts end resistance 5 is not
It is identical, it is easily installed.Certainly, component end resistance 5 can also be configured by other means, for example, a component end resistance 5
It can be in series or be formed in parallel by least two resistance.Wherein, component end resistance 5 is specifically as follows precision resister, with
Clearly distinguish various shunt voltage values.
Further, please refer to Fig.3, interlocking detection device 3 can specifically include sampling resistor 33, voltage detection module 32
With power supply module 31.Voltage detection module 32 is for the real-time voltage for detecting 33 both ends of sampling resistor.Sampling resistor 33 and voltage
Connect to form series arm with power supply module 31 again after 32 parallel connection of detection module, after all detection branch parallel connections with the series arm
Series connection forming circuit.Power supply module 31 can be entire loop power supply, and the amplitude and waveform of output voltage can be according to reality
Use demand selects.Sampling resistor 33 is specifically as follows fixed value resistance, in actually detected, the resistance value of each component in series arm
It determines and circuit is completed after connecting, for the situation in parallel of each detection branch, sampling resistor 33 is corresponding, and there are one determine
Side pressure, be capable of detecting when by voltage detection module come so as to intuitively obtain the open circuit situation of high voltage component 4.Its
In, voltage detection module 32 can be high-accuracy voltage detection module, allow for distinguishing sampling resistor 33 and matching electricity
The different branch pressure voltage values connected between resistance 34 and the equivalent parallel all-in resistance of different detection branch on post-sampling resistance 33.
Further, the build-out resistor being serially connected in the series arm can also be included in the high-voltage interlocking detection circuit
34, i.e. sampling resistor 33 and formation series connection branch of connecting again with power supply module 31, build-out resistor 34 after 32 parallel connection of voltage detection module
Road, then, forming circuit of connecting after all detection branch parallel connections with the series arm.The build-out resistor 34 can adjust circuit
Total resistance value, to adjust the power consumption in the circuit, so as to ensure that the power consumption in the circuit is in suitable scope.When sampling resistor 33
When choosing specific resistance value with the resistance value of build-out resistor 34, judge to examine by judging the voltage value that voltage detection module 32 gathered
The all-in resistance resistance value state in parallel of branch is surveyed, and then determines the on off operating mode of 4 connector of high voltage component.It finally just can be according to high pressure
The on off operating mode of 4 connector of component investigates corresponding high voltage component 4.
Further, build-out resistor 34 can be the adjustable resistor of resistance value, circuit total resistance value to be facilitated to adjust operation
Progress.By adjusting build-out resistor 34 by after the regulating power consumption in circuit to tolerance interval, the resistance value of build-out resistor 34 is
Determine, at this point it is possible to it is various to the partial pressure of sampling resistor 33 and detection branch it is in parallel in the case of parallel resistance relation progress
It determines.
In above-mentioned each embodiment, host computer can also be included in high-voltage interlocking detection circuit, which is used to store
Correspondence between sampling resistor 33 and the parallel resistance value of detection branch is specifically as follows relation table, and is examined according to voltage
The testing result for surveying module shows the fault condition of high voltage component 4, and host computer signal is connected to voltage detection module 32, so as to
Easily and directly to determine the current corresponding 4 connector break-make situation of high voltage component of detection voltage value.
Except above-mentioned high-voltage interlocking detection circuit, it is mutual to include high pressure disclosed in above-described embodiment the present invention also provides one kind
The automobile of detection circuit is locked, which can connect as a result of above-mentioned high-voltage interlocking detection circuit in high voltage component 4
Accurately the high voltage component 4 of interlocking open circuit occurs for locking after high-voltage interlocking open fault caused by connecing device problem.The automobile other
Refer to the prior art for the structure of each several part, repeats no more herein.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
Automobile provided by the present invention and its high-voltage interlocking detection circuit are described in detail above.It is used herein
Specific case is set forth the principle of the present invention and embodiment, to understand the explanation of above example is only intended to helping
The method and its core concept of the present invention.It should be pointed out that for those skilled in the art, this is not being departed from
On the premise of inventive principle, can also to the present invention some improvement and modification can also be carried out, these improvement and modification also fall into the present invention
In scope of the claims.
Claims (7)
1. a kind of high-voltage interlocking detection circuit, which is characterized in that set including interlocking detection device (3) and N number of one-to-one corresponding that is used for
Component end resistance (5) in N number of high voltage component (4), the component end resistance (5) and the high pressure in the high voltage component (4)
Connector, low voltage connector connect to form detection branch, and detection device (3) is interlocked with described after all detection branch parallel connections
Series connection, the 2 of the detection branchNUnder kind break-make situation, the parallel resistance value after all detection branch parallel connections is corresponding with 2N
Kind, the interlocking detection device can judge the detection branch to break down according to the parallel resistance value, wherein, N ＞ 1
And N is positive integer.
2. high-voltage interlocking detection circuit according to claim 1, which is characterized in that each component end resistance (5) is equal
Tool is there are one resistor, and the resistance value of each component end resistance (5) differs.
3. high-voltage interlocking detection circuit according to claim 2, which is characterized in that the interlocking detection device (3) includes：
Sampling resistor (33)；
Voltage detection module (32), for detecting the voltage at the sampling resistor (33) both ends in real time；
Power supply module (31), after the sampling resistor (33) is in parallel with the voltage detection module (32) again with the power supply module
(31) series connection forms series arm, forming circuit of connecting after all detection branch parallel connections with the series arm.
4. high-voltage interlocking detection circuit according to claim 3, which is characterized in that further include and be serially connected with the series arm
In build-out resistor (34), for adjusting the circuit total resistance value to adjust the circuit power consumption.
5. high-voltage interlocking detection circuit according to claim 4, which is characterized in that the build-out resistor (34) can for resistance value
The resistor of tune.
6. the high-voltage interlocking detection circuit according to claim 3 to 5 any one, which is characterized in that host computer is further included,
For storing the correspondence between the sampling resistor (33) and the parallel resistance value, and according to the voltage detection module
(32) testing result shows the fault condition of the high voltage component (4), and the host computer signal is connected to the voltage detecting
Module (32).
7. a kind of automobile, which is characterized in that including the high-voltage interlocking detection circuit described in claim 1 to 6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711339613.8A CN108058599A (en) | 2017-12-14 | 2017-12-14 | A kind of automobile and its high-voltage interlocking detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711339613.8A CN108058599A (en) | 2017-12-14 | 2017-12-14 | A kind of automobile and its high-voltage interlocking detection circuit |
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| CN108058599A true CN108058599A (en) | 2018-05-22 |
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| CN201711339613.8A Pending CN108058599A (en) | 2017-12-14 | 2017-12-14 | A kind of automobile and its high-voltage interlocking detection circuit |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983000A (en) * | 2018-07-27 | 2018-12-11 | 北京新能源汽车股份有限公司 | A kind of high-voltage interlocking detection circuit, high-voltage interlocking detection system and automobile |
| CN109507564A (en) * | 2018-11-14 | 2019-03-22 | 苏州绿控传动科技股份有限公司 | A kind of new energy overall height pressure interlock detection circuit and corresponding detection method |
| 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 |
| CN110967617A (en) * | 2019-02-25 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking circuit and detection method thereof |
| 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 |
| CN112379311A (en) * | 2020-09-29 | 2021-02-19 | 许继电源有限公司 | Connection confirmation detection system and detection method for shore power connector |
| CN113071315A (en) * | 2021-03-10 | 2021-07-06 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN115447388A (en) * | 2022-08-22 | 2022-12-09 | 浙江氢途科技有限公司 | High-voltage interlocking device capable of achieving accurate positioning and judgment method |
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| CN108983000A (en) * | 2018-07-27 | 2018-12-11 | 北京新能源汽车股份有限公司 | A kind of high-voltage interlocking detection circuit, high-voltage interlocking detection system and automobile |
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| CN109507564A (en) * | 2018-11-14 | 2019-03-22 | 苏州绿控传动科技股份有限公司 | A kind of new energy overall height pressure interlock detection circuit and corresponding detection method |
| CN110967617A (en) * | 2019-02-25 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking circuit and detection method thereof |
| 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 |
| CN112379311A (en) * | 2020-09-29 | 2021-02-19 | 许继电源有限公司 | Connection confirmation detection system and detection method for shore power connector |
| CN113071315A (en) * | 2021-03-10 | 2021-07-06 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN115447388A (en) * | 2022-08-22 | 2022-12-09 | 浙江氢途科技有限公司 | High-voltage interlocking device capable of achieving accurate positioning and judgment method |
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Effective date of registration: 20200109 Address after: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Applicant after: Chongqing Chang'an Automobile Co., Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Applicant before: Chongqing Chang'an Automobile Co., Ltd. Applicant before: Chongqing Chang'an New Energy Automobile Co., Ltd. |
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Application publication date: 20180522 |