CN211061617U - High-voltage safety detection device for electric automobile - Google Patents
High-voltage safety detection device for electric automobile Download PDFInfo
- Publication number
- CN211061617U CN211061617U CN201921597003.2U CN201921597003U CN211061617U CN 211061617 U CN211061617 U CN 211061617U CN 201921597003 U CN201921597003 U CN 201921597003U CN 211061617 U CN211061617 U CN 211061617U
- Authority
- CN
- China
- Prior art keywords
- unit
- electrically connected
- detection
- voltage
- relay
- 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
Images
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model discloses an electric automobile high pressure safety inspection device, include: a signal transmission unit electrically connected to the detection vehicle and bidirectionally transmitting the detection signal; the detection unit is electrically connected with the signal transmission unit, reads and calculates the detection signal; the device comprises a detection unit, a control/data processing unit, a display unit and a power supply unit, wherein the detection unit is electrically connected with the control/data processing unit and used for processing the detection data to obtain a detection result, the display unit is electrically connected with the control/data processing unit and used for obtaining and displaying the detection result, and the power supply unit is used for supplying power to the signal transmission unit, the detection unit, the control/data processing unit and the display unit. The utility model discloses be integrated as an organic whole with equipotential, insulation resistance, the required functional unit of the low monitoring of insulation, according to the detection mode that corresponds during the detection, start the functional unit that corresponds and detect to realize the automatic calculation and the output of testing result.
Description
Technical Field
The utility model relates to a car safety inspection field especially relates to an electric automobile high pressure safety inspection device.
Background
With the development of new energy automobiles, automobile high-voltage safety is an important factor influencing the performance of the new energy automobiles, and according to the regulations related to safety detection of electric automobiles, the electric automobiles need to perform three experiments of equipotential, insulation resistance and low insulation monitoring of a whole automobile high-voltage system in the development process so as to ensure the safety of the automobiles.
At present, the detection modes of the three experiments are respectively detected, different experimental instruments are required to be respectively selected for measurement, a large amount of line connection is required in the experimental process, and experimental data are manually recorded and experimental results are calculated. The circuit connection is required to be carried out again in each experiment, so that more experimental instruments are required, and the experimental process is complicated; and the manual recording and calculation of the experimental results are not only low in efficiency, but also high in error rate, and influence the experimental results, and the experimental process has personnel safety risks.
Therefore, it is necessary to provide a detection apparatus that integrates three experiments of equipotential, insulation resistance, and insulation reduction monitoring, so as to simplify the experimental steps and realize the automatic output of the experimental results.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a collect equipotential, insulation resistance, three experiments of insulating low monitoring detection device in an organic whole, simplify the experimental procedure, realize the automatic output of experimental result.
The technical scheme of the utility model a high pressure safety inspection device of electric automobile is provided, include: a signal transmission unit electrically connected to the detection vehicle and bidirectionally transmitting the detection signal; the detection unit is electrically connected with the signal transmission unit, reads and calculates the detection signal; the control/data processing unit is electrically connected with the detection unit and is used for processing the detection data to obtain a detection result; the display unit is electrically connected with the control/data processing unit and used for acquiring and displaying the detection result; and a power supply unit for supplying power to the signal transmission unit, the detection unit, the control/data processing unit and the display unit.
Further, the detection signal comprises an input signal and an output signal;
the signal transmission unit includes: the vehicle-mounted detection device comprises an input unit, an output unit and a communication unit, wherein the input unit is electrically connected with a high-voltage system of the detection vehicle to input the input signal to the high-voltage system, the output unit is electrically connected with a relay control unit of the detection vehicle to obtain the output signal, and the communication unit is in communication connection with a communication module of the high-voltage system.
Still further, the input unit includes:
the battery pack comprises a first voltage input unit for inputting a first voltage signal to the battery unit, a second voltage input unit for inputting a second voltage signal to the high-voltage system, and an adjustable resistance unit for parallelly connecting a resistor to the high-voltage system.
Still further, the high-voltage system comprises a positive electrode interface, a negative electrode interface and a vehicle body ground interface;
a first output end of the first voltage input unit is electrically connected with the positive interface through a first relay switch, a second output end of the first voltage input unit is electrically connected with the negative interface through a second relay switch, and a third output end of the first voltage input unit is electrically connected with the vehicle body ground interface;
the first output end of the second voltage input unit is electrically connected with the positive interface through a third relay switch, the second output end of the second voltage input unit is electrically connected with the negative interface through a fourth relay switch, and the third output end of the second voltage input unit is electrically connected with the vehicle body ground interface;
the first output end of the adjustable resistance unit is electrically connected with the positive interface through a fifth relay switch, the second output end of the adjustable resistance unit is electrically connected with the negative interface through a sixth relay switch, and the third output end of the adjustable resistance unit is electrically connected with the vehicle body ground interface.
In a still further aspect of the present invention,
the power supply end of the first voltage input unit is electrically connected with the power supply unit through a first power switch;
the power supply end of the second voltage input unit is electrically connected with the power supply unit through a second power switch;
and the power end of the adjustable resistance unit is electrically connected with the power supply unit through a third power switch.
Further, the relay control unit comprises a relay in the battery pack, a quick charge relay and a standby relay;
the output unit comprises control switches, and each of the relay in the battery pack, the quick charging relay and the standby relay is electrically connected with one control switch respectively.
Further, a power terminal of the output unit is electrically connected to the power supply unit through a fourth power switch.
Further, the signal transmission unit further comprises a micro-resistance test unit;
the first output end of the micro-resistance testing unit is electrically connected with a shell of a high-voltage part of the high-voltage system, and the second output end of the micro-resistance testing unit is electrically connected with a vehicle body of a detection vehicle;
furthermore, the power end of the micro-resistance testing unit is electrically connected with the power supply unit through a fifth power switch.
Furthermore, the power supply unit is electrically connected with a power interface of the detection vehicle through a sixth power switch or electrically connected with an external alternating current power supply through a seventh power switch.
After adopting above-mentioned technical scheme, have following beneficial effect:
the utility model discloses with equipotential, the detection of the insulation resistance of high-voltage circuit and high-voltage battery package in the high-voltage system, the required functional unit of low monitoring of insulation is integrated into an organic whole, according to the detection mode that corresponds during the detection, correspond the detection mode that sets up control data processing unit, connect the high-voltage system of signal transmission unit and detection vehicle, input the detected signal to the high-voltage system and detect, and calculate the detected data by the detection unit, output the testing result and show on the display element automatically by control data processing unit, realize the automatic calculation and the output of testing result;
after one detection is finished, the other detection can be carried out only by adjusting the wiring between the signal transmission unit and the high-voltage system according to the other detection mode and resetting the detection mode of the control/data processing unit, so that the detection steps are simplified, and the detection efficiency is improved.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a system structure diagram of an electric vehicle high voltage detection device according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of the high voltage detection device of the electric vehicle in an embodiment of the present invention.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The embodiment provides an electric automobile high pressure safety inspection device, as shown in fig. 1, includes: a signal transmission unit 01 electrically connected to the detection vehicle 07 and bidirectionally transmitting a detection signal; a detection unit 02 electrically connected to the signal transmission unit 01 to read and calculate the detection signal; a control/data processing unit 03 electrically connected to the detection unit 02 for processing the detection data to obtain a detection result; a display unit 04 electrically connected to the control/data processing unit 03 for acquiring and displaying the detection result; and a power supply unit 05 for supplying power to the signal transmission unit 01, the detection unit 02, the control/data processing unit 03, and the display unit 04.
The signal transmission unit 01 is provided with a plurality of connection interfaces, and selects a corresponding interface to be electrically connected with the detection vehicle 07 based on different detection modes, wherein a part of the interfaces are used for inputting detection signals to the detection vehicle 07, and a part of the interfaces are used for receiving the detection signals fed back by the detection vehicle 07.
The detection unit 02 reads the detection signal and obtains the detection data to be measured based on the detection signal through simple calculation, such as calculating the resistance value through the input voltage signal and current signal, in a specific embodiment, the detection unit 02 uses a built-in detection circuit and a logic calculation processing element to realize the detection function, such as a microcontroller, a single chip, P L C, and the like.
The control/data processing unit 03 receives the detection data of the detection unit 02, performs data processing on the detection data to obtain a detection result and outputs control information, the control/data processing unit 03 is loaded with a plurality of data processing algorithms, can call the corresponding data processing algorithms to perform data processing according to a currently started detection mode, and outputs the detection result to the display unit 04 and the control background 06, wherein the detection mode includes, but is not limited to, four detection modes of equipotential detection, battery pack insulation resistance detection, high-voltage circuit insulation resistance detection and insulation low monitoring.
The detection result comprises a numerical value and a non-numerical value, the numerical value comprises detection numerical values such as the insulation resistance value of the high-voltage battery pack, the insulation resistance value between the high-voltage loop and the vehicle body and the like, and the non-numerical value comprises detection results such as whether the detected module is damaged or not. Based on the foregoing detection results, in some specific embodiments, the display unit 04 may be configured as one or more of a combination of a liquid crystal screen, a nixie tube and an indicator light.
Specifically, the detection signal includes an input signal and an output signal, the input signal is a trigger signal input by the signal transmission unit to the detection vehicle 07, and based on the input signal, a feedback signal output by the detection vehicle 07 is an output signal.
The high-voltage system 71 of the inspection vehicle 07 includes a high-voltage circuit and a battery unit, and the signal input unit 01 selects input of an input signal to the high-voltage circuit or the battery unit in different inspection modes. The battery unit is a battery pack, the high-voltage loop is a high-voltage system loop except for the battery pack (a passive part), and the battery unit or the high-voltage loop is connected with at least three interfaces, namely a positive electrode interface, a negative electrode interface and a vehicle body ground interface.
As shown in fig. 2, the signal transmission unit 01 specifically includes an input unit 11 for electrically connecting with a battery unit or a high voltage circuit of the high voltage system 71 to input the input signal thereto, and further includes:
a first voltage input unit 111 for inputting a first voltage signal to the battery cell or the high voltage circuit;
a second voltage input unit 112 for inputting a second voltage signal to the battery cell or the high voltage circuit;
an adjustable resistance unit 113 for connecting resistance to the battery unit or the high voltage loop.
Specifically, a first output end of the first voltage input unit 111 is electrically connected to the positive interface through a first relay switch Q1, a second output end is electrically connected to the negative interface through a second relay switch Q2, and a third output end is electrically connected to the vehicle body ground interface. In at least one detection mode, the first voltage input unit 111 is connected to the power supply unit 05, the first relay switch Q1 and/or the second relay switch Q2 is closed, the high voltage system 71 is connected to the detection device, and a constant voltage signal is input to the high voltage system 71. The first voltage input unit 111 generally employs a voltage generating circuit, and if the voltage provided by the power supply unit 05 satisfies the input requirement in a certain embodiment, the first voltage input unit 111 may not have a circuit structure, but only need to provide a connection interface for connecting the power supply unit 05 and the high-voltage system 71.
The first output end of the second voltage input unit 112 is electrically connected to the positive interface through a third relay switch Q3, the second output end is electrically connected to the negative interface through a fourth relay switch Q4, and the third output end is electrically connected to the vehicle body ground interface. In at least one detection mode, the second voltage input unit 112 is connected with the power supply unit 05, the third relay switch Q3 and/or the fourth relay switch Q4 are/is closed, the high-voltage system 71 is connected to the detection device, and a high-voltage signal is input to the high-voltage system 71; the second voltage input unit 112 may employ an adjustable high voltage generator, and the voltage of the output high voltage signal thereof may be set according to the detection requirement.
The first output end of the adjustable resistance unit 113 is electrically connected to the positive interface through a fifth relay switch Q5, the second output end is electrically connected to the negative interface through a sixth relay switch Q6, and the third output end is electrically connected to the vehicle body ground interface. In at least one detection mode, the adjustable resistor unit 113 is connected with the power supply unit 05, the fifth relay switch Q5 and/or the sixth relay switch Q6 are/is closed, the resistor is connected to the high-voltage system 71, the adjustable resistor unit 113 is an adjustable resistor, and the adjustable resistor can be selectively connected in parallel between the positive pole and the negative pole of the high-voltage system 71 or between the positive pole and the vehicle body ground or between the negative pole and the vehicle body ground through the fifth relay switch Q5 and the sixth relay switch Q6.
The signal transmission unit 01 further includes an output unit 12 for electrically connecting with the relay control unit 72 of the high voltage system to acquire the output signal.
Specifically, the relay control unit 72 includes a battery pack internal relay 721, a quick charge relay 722 and a backup relay 723; the in-battery relay 721 includes a pre-charge relay, a battery negative electrode relay, and a battery positive electrode relay; the quick charge relay 722 comprises a quick charge positive electrode electric relay and a quick charge negative electrode electric relay; the backup relay 723 includes a first backup relay and a second backup relay.
The output unit 12 comprises a plurality of control switches Q7-Q13, and the control switches Q7-Q13 are respectively used for electrically connecting the relays and are correspondingly controlled by the relays electrically connected with the relays. In one embodiment, the output unit 12 is a programmable counter, the plurality of control switches Q7-Q13 are respectively connected to the input end thereof, the counting end thereof is connected to the control/data processing unit 03, any one or more control switches are turned on, and the counting end outputs a corresponding output signal to the control/data processing unit 03. And under different detection modes, selecting a relay which is switched in the detection mode and outputs a corresponding output signal.
The signal transmission unit 01 further includes a communication unit 13, in one embodiment, the communication module 13 is a CAN transceiver module, and is configured to be in communication connection with a CAN communication module of the high-voltage system to implement data communication, and in at least one detection mode, the communication unit 13 acquires vehicle CAN information and transmits the vehicle CAN information to the control/data processing unit 03 for data processing.
The signal transmission unit 01 further comprises a micro-resistance test unit 14 for equipotential testing, a first output end of the micro-resistance test unit 14 is used for being electrically connected with a high-voltage part shell of the high-voltage system, a second output end of the micro-resistance test unit 14 is used for being electrically connected with a vehicle body, the micro-resistance test unit 14 is used for testing a micro-resistance value between the high-voltage part shell and the vehicle body, and an internal circuit of a micro-resistance tester can be adopted.
The power supply unit 05 is powered by direct current and alternating current, the direct current is powered by a vehicle power supply, the alternating current is powered by a direct current voltage stabilizing circuit, the 220V mains supply is subjected to voltage reduction and rectification processing to output stable direct current voltage, and the stable direct current voltage is used for supplying power to each functional unit in the detection device and a high-voltage system for detecting the vehicle. Based on detection device under the detection mode of difference, need start different functional unit, for practice thrift the energy consumption and avoid producing the interference between each functional unit, all set up switch between each functional unit and the power supply unit 05, concrete connected mode as follows:
the power source terminal of the first voltage input unit 111 is electrically connected to the power supply unit 05 through a first power switch K1; the power terminal of the second voltage input unit 112 is electrically connected to the power supply unit 05 through a second power switch K2; the power supply end of the adjustable resistance unit 113 is electrically connected with the power supply unit 05 through a third power switch K3; the power supply end of the output unit 12 is electrically connected with the power supply unit 05 through a fourth power switch K4; the power supply end of the micro-resistance testing unit is electrically connected with the power supply unit 05 through a fifth power switch K5; the power interface of the high-voltage system is electrically connected with the power supply unit 05 through a sixth power switch K6.
The safety detection device for the electric automobile can be used in combination with the upper computer 06 in the detection process, the upper computer 06 is provided with a human-computer interaction interface and is in communication connection with the control/data processing unit 03, and communication can be achieved by adopting a wireless local area network, Bluetooth communication and other modes; the upper computer 06 receives and stores the detection result of the control/data processing unit 03, and the staff can inquire the detection result on the upper computer 06 at any time, call the detection result to generate a detection report and the like. The tablet, the mobile terminal such as a mobile phone and the computer can be used as an upper computer.
The functional units required to be activated by the electric vehicle safety detection device in different detection modes are described below with reference to the schematic circuit diagram of fig. 2:
the first detection mode is as follows: and (3) equipotential detection:
the first output end of the micro-resistance detection unit 14 is connected with the shell of the high-voltage part, the second output end of the micro-resistance detection unit is connected with the automobile body, the power supply unit 05 is connected with the power supply, the power switch K6 (or K7) and the power switch K5 are closed, the micro-resistance detection unit 14 is connected with the power supply, and then the electric automobile safety detection device works in an equipotential detection mode, so that an equipotential detection test can be started.
And a second detection mode: detecting the insulation resistance of the battery pack:
a first output end of the first voltage input unit 111 is connected with a positive electrode interface through a first relay switch Q1, a second output end is connected with a negative electrode interface through a second relay switch Q2, and a third output end is connected with a vehicle body ground interface;
a first output end of the adjustable resistance unit 113 is connected with the positive electrode interface through a fifth relay switch Q5, a second output end is connected with the negative electrode interface through a sixth relay switch Q6, and a third output end is connected with the vehicle body ground interface;
control switches Q7-Q9 of the output unit 12 are respectively connected with a pre-charging relay, a battery cathode electric relay and a battery anode electric relay;
the power switch K6 (or K7) is turned on to power on the detection device, the power switches K1, K3 and K4 are turned on after the resistance value of the adjustable resistance unit 113 is set, and the power supplies of the first voltage input unit 111, the adjustable resistance unit 113 and the output unit 12 are switched on;
the safety detection device of the electric automobile works in the battery pack insulation resistance detection mode, and then the battery pack insulation resistance detection test can be started.
And a third detection mode: detecting the insulation resistance of a high-voltage loop:
a first output end of the second voltage input unit 112 is connected with the positive electrode interface through a third relay switch Q3, a second output end is connected with the negative electrode interface through a fourth relay switch Q4, and a third output end is connected with the vehicle body ground interface;
control switches Q10 and Q11 of the output unit 12 are respectively connected with a quick-charging positive relay and a quick-charging negative relay;
the power switch K6 (or K7) is closed to power on the detection device, and then the power switches K2 and K4 are closed to turn on the power of the second voltage input unit 112 and the output unit 12;
the safety detection device of the electric automobile works in a high-voltage loop insulation resistance detection mode, and then a high-voltage loop insulation resistance detection test can be started.
And a detection mode four: monitoring low insulation:
a first output end of the adjustable resistance unit 113 is connected with a positive electrode interface through a fifth relay switch Q5, a second output end is connected with a negative electrode interface through a sixth relay switch Q6, and a third output end is connected with a vehicle body ground interface;
control switches Q10 and Q11 of the output unit 12 are respectively connected with a quick-charging positive relay and a quick-charging negative relay;
the power switch K6 (or K7) is closed to power on the detection device, and then the power switches K3 and K4 are closed to switch on the power of the adjustable resistance unit 112 and the output unit 12;
the safety detection device of the electric automobile works in the low insulation monitoring and detecting mode, and the low insulation monitoring test can be started.
The electric automobile safety detection device of this embodiment detects equipotential, battery package insulation resistance detects, high-voltage circuit insulation resistance detects and the required component of four kinds of detection modes of low monitoring of insulation is integrated as an organic whole, and the switch-on corresponds the module and can detect when detecting to built-in output processing unit and display element can carry out data processing and demonstration in real time, and it is consuming to reduce artifical calculation. Multiple detection can be completed by one device, so that the safety detection of the electric automobile is more standard, and the detection efficiency can be obviously improved.
What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.
Claims (10)
1. The utility model provides an electric automobile high pressure safety inspection device which characterized in that includes: a signal transmission unit electrically connected to the detection vehicle and bidirectionally transmitting the detection signal; the detection unit is electrically connected with the signal transmission unit, reads and calculates the detection signal; the control/data processing unit is electrically connected with the detection unit and is used for processing the detection signal to obtain a detection result; the display unit is electrically connected with the control/data processing unit and used for acquiring and displaying the detection result; and a power supply unit for supplying power to the signal transmission unit, the detection unit, the control/data processing unit and the display unit.
2. The electric vehicle high-voltage safety detection device according to claim 1, wherein the detection signal comprises an input signal and an output signal;
the signal transmission unit includes: the vehicle-mounted detection device comprises an input unit, an output unit and a communication unit, wherein the input unit is electrically connected with a high-voltage system of the detection vehicle to input the input signal to the high-voltage system, the output unit is electrically connected with a relay control unit of the detection vehicle to obtain the output signal, and the communication unit is in communication connection with a communication module of the high-voltage system.
3. The electric vehicle high-voltage safety detection device according to claim 2, wherein the input unit comprises:
the high-voltage system comprises a first voltage input unit for inputting a first voltage signal to the high-voltage system, a second voltage input unit for inputting a second voltage signal to the high-voltage system, and an adjustable resistance unit for parallelly connecting a resistor to the high-voltage system.
4. The electric vehicle high-voltage safety detection device according to claim 3, wherein the high-voltage system comprises a positive electrode interface, a negative electrode interface and a vehicle body ground interface;
a first output end of the first voltage input unit is electrically connected with the positive interface through a first relay switch, a second output end of the first voltage input unit is electrically connected with the negative interface through a second relay switch, and a third output end of the first voltage input unit is electrically connected with the vehicle body ground interface;
the first output end of the second voltage input unit is electrically connected with the positive interface through a third relay switch, the second output end of the second voltage input unit is electrically connected with the negative interface through a fourth relay switch, and the third output end of the second voltage input unit is electrically connected with the vehicle body ground interface;
the first output end of the adjustable resistance unit is electrically connected with the positive interface through a fifth relay switch, the second output end of the adjustable resistance unit is electrically connected with the negative interface through a sixth relay switch, and the third output end of the adjustable resistance unit is electrically connected with the vehicle body ground interface.
5. The high-voltage safety detection device for electric vehicles according to claim 3 or 4,
the power supply end of the first voltage input unit is electrically connected with the power supply unit through a first power switch (K1);
a power supply terminal of the second voltage input unit is electrically connected with the power supply unit through a second power switch (K2);
the power supply end of the adjustable resistance unit is electrically connected with the power supply unit through a third power switch (K3).
6. The high-voltage safety detection device for the electric automobile according to claim 2, wherein the relay control unit comprises a relay in the battery pack, a quick charge relay and a standby relay;
the output unit comprises control switches (Q7-Q13), and each of the relay in the battery pack, the quick charging relay and the standby relay is electrically connected with one control switch respectively.
7. The electric vehicle high-voltage safety detection device according to claim 6, wherein the power supply end of the output unit is electrically connected with the power supply unit through a fourth power switch (K4).
8. The electric vehicle high-voltage safety detection device according to claim 2, wherein the signal transmission unit further comprises a micro-resistance test unit;
the first output end of the micro-resistance testing unit is electrically connected with a shell of a high-voltage part of the high-voltage system, and the second output end of the micro-resistance testing unit is electrically connected with a vehicle body of the detection vehicle.
9. The electric vehicle high-voltage safety detection device according to claim 8, wherein the power supply end of the micro-resistance test unit is electrically connected with the power supply unit through a fifth power switch (K5).
10. The high-voltage safety detection device for the electric vehicle as claimed in claim 1, wherein the power supply unit is electrically connected to the power interface of the detection vehicle through a sixth power switch (K6) or electrically connected to an external ac power source through a seventh power switch (K7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921597003.2U CN211061617U (en) | 2019-09-24 | 2019-09-24 | High-voltage safety detection device for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921597003.2U CN211061617U (en) | 2019-09-24 | 2019-09-24 | High-voltage safety detection device for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211061617U true CN211061617U (en) | 2020-07-21 |
Family
ID=71588159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921597003.2U Active CN211061617U (en) | 2019-09-24 | 2019-09-24 | High-voltage safety detection device for electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211061617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948458A (en) * | 2020-09-23 | 2020-11-17 | 东风汽车集团有限公司 | Detection method and equipment of electric automobile insulation monitoring system |
| CN115267378A (en) * | 2022-06-30 | 2022-11-01 | 中国第一汽车股份有限公司 | Processing method for high-voltage safety detection operation and vehicle |
-
2019
- 2019-09-24 CN CN201921597003.2U patent/CN211061617U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948458A (en) * | 2020-09-23 | 2020-11-17 | 东风汽车集团有限公司 | Detection method and equipment of electric automobile insulation monitoring system |
| CN115267378A (en) * | 2022-06-30 | 2022-11-01 | 中国第一汽车股份有限公司 | Processing method for high-voltage safety detection operation and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103187777B (en) | A kind of charger and detection method | |
| CN204988479U (en) | Intelligence personal weighing scale | |
| CN207440260U (en) | Storage battery electric quantity monitoring device and storage battery electric quantity monitoring system | |
| CN211061617U (en) | High-voltage safety detection device for electric automobile | |
| CN203377624U (en) | Communication lithium iron phosphate battery remote communication alarm device | |
| CN202339393U (en) | Insulation detector of power battery system of electric vehicle | |
| CN106771632A (en) | Multi-channel DC resistance meter | |
| CN102856940A (en) | Electronic device and charger capable of indicating battery charging state | |
| AU2015411280B2 (en) | Intelligent charger with diagnostic function and charging method | |
| CN110426588A (en) | Charger detection device and system | |
| CN106160057A (en) | The wireless control system of battery charging and method | |
| CN105785169B (en) | A kind of battery system precharge management detection device and its detection method | |
| CN201689161U (en) | Battery performance detector | |
| CN206020564U (en) | A kind of detection of the laptop adapter with auto-alarm function instrument | |
| CN207067294U (en) | A kind of down conductor continuity test instrument | |
| CN102680908B (en) | Battery status detection record analyzer and control method | |
| CN206790138U (en) | A kind of portable power source | |
| CN109520657A (en) | A kind of universal open isolating switch clamps force tester and test method | |
| CN103529390A (en) | Battery residual electric amount measuring device based on single-chip microcomputer | |
| CN211148867U (en) | Battery pack diagnostic device for electric vehicle | |
| CN202995007U (en) | Tester used for testing mobile power supply | |
| CN209327442U (en) | A kind of field step voltage detection device with mobile interchange function | |
| CN106771633A (en) | Hand-held instrument for measuring DC resistance | |
| CN210579258U (en) | Wireless signal detection device suitable for power equipment terminal | |
| CN204462259U (en) | Networking three-phase circuit detection device for phase sequence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |