KR20140143625A - High voltage interlock loop monitoring apparatus capable of detecting connection failure, method thereof and battery module using the same - Google Patents
High voltage interlock loop monitoring apparatus capable of detecting connection failure, method thereof and battery module using the same Download PDFInfo
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- KR20140143625A KR20140143625A KR20130065448A KR20130065448A KR20140143625A KR 20140143625 A KR20140143625 A KR 20140143625A KR 20130065448 A KR20130065448 A KR 20130065448A KR 20130065448 A KR20130065448 A KR 20130065448A KR 20140143625 A KR20140143625 A KR 20140143625A
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Abstract
A high-voltage interlock loop monitoring apparatus capable of detecting a connection failure according to the present invention includes: at least one connection unit capable of electrically connecting to at least one connection object, respectively; One or more resistors connected in parallel to the respective connection objects when the respective connection objects and the respective connection parts are connected; And a control circuit for calculating a sum of resistance values across each of the resistors and determining whether to connect each of the connection targets to each of the connections based on a sum of the calculated resistance values. According to the present invention, it is possible to accurately detect whether or not the connection is established based on the sum of the resistance values between both ends of the resistors connected in parallel after connecting the resistors in parallel to the object to be connected, It is possible to detect the position of the connection portion where the connection occurs and the number of connection portions where the connection failure occurs, and the manufacturing cost can be reduced because the wiring is not complicated in actual designing.
Description
The present invention relates to a high voltage interlock loop monitoring apparatus, a method, and a battery module, and more particularly, to a high voltage interlock loop monitoring apparatus and method capable of detecting connection failure and a battery module using the same.
Conventional automobiles using fossil fuels have the disadvantage of seriously polluting the environment due to the exhaust gas that is ejected when the fossil fuel is burned in the internal combustion engine. In addition, since the reserves of fossil fuels are limited, next generation vehicles using alternative energy instead of fossil fuels are being developed as a countermeasure before fossil fuels are depleted.
Among electric vehicles using alternative energy, electric vehicles accumulate electric power stored in the battery and move the electric motor by rotating the electric motor, which is also called EV (Electric Vehicle). Electric vehicles usually refer to both hybrid and plug-in hybrid cars, not purely electric cars. The electric vehicle is a next-generation eco-friendly automobile that significantly reduces harmful gas emissions compared to vehicles using conventional internal combustion engines.
An electric vehicle is a pure electric vehicle (BEV), which is driven only by a battery without the aid of an internal combustion engine, a plug-in hybrid with a small internal combustion engine that uses only electricity stored in the battery as a power source, Hybrid EVs (PHEVs), hybrid electric vehicles (HEVs) that maximize fuel efficiency by selectively operating electric motors and internal combustion engines according to driving conditions using internal combustion engines and electric motors.
The electric vehicle includes a battery pack including a battery management system (BMS), a driving electric motor, an inverter / converter, a vehicle controller, and an auxiliary device.
In an electric vehicle, the battery pack may be used as a power source for supplying a high voltage (HV), and may be provided with a connector for driving electric motors, inverters, converters, auxiliary devices, etc., Provide high voltage through the cable.
Therefore, the battery pack in the electric vehicle and the driving electric motor, inverter, converter, and auxiliary equipment that require high voltage are electrically connected to each other by a cable having a connector.
However, when a battery pack or a device requiring high voltage is brought into a connection failure or a connection failure state in which a connector is disconnected due to various factors such as a severe vibration or a collision of a car, a high voltage of the battery pack is not supplied to the electric devices Because the electric device does not work properly, the car may stop operating in severe cases.
Therefore, in an electric vehicle using a high voltage supplied from a battery pack as a main power source or an auxiliary power source, a high voltage interlock loop (HVIL: High Voltage Interlock Loop) is configured to check whether or not specific parts such as a connector are connected.
The high-voltage interlock loop refers to the function of monitoring and configuring separate closed circuits between parts to check whether or not the specific parts are connected. In the case of a battery pack in an electric vehicle, connectors for connecting the battery pack and electric devices requiring high voltage, fuses and the like are connected by a high-voltage interlock loop so that connection can be monitored.
1A to 1D are diagrams illustrating a conventional high-voltage interlock loop provided in a battery pack.
1A includes a
Fig. 1E is a detailed view of the terminals of the
1E, the
The terminals 110c and 110d of the
The
Referring back to FIG. 1A, the
In the high voltage interlock loop constructed as described above, the
Similarly, as in the case of Figs. 1B and 1C, when one connector deviates from the high-voltage interlock loop, since no closed circuit is formed and no current flows, the
1D shows a state in which both the
However, the conventional high-voltage interlock loop as described above has a problem in that the circuit configuration is simple, but the position of the point where the connector is not connected can not be known and the number of points where the connector is not connected can not be grasped.
Figures 2a and 2b show another high voltage interlock loop according to the prior art.
In other conventional high-voltage interlock loops shown in Figs. 2A and 2B, since a high-voltage interlock loop is formed in such a manner as to form one loop for each connection object, Can be grasped to the position of the point where the "
For example, in the high voltage interlock loop shown in FIG. 2A, the
Since the
2B, the
Since the
Thus, other conventional high voltage interlock loops shown in FIGS. 2A and 2B can detect that some points are in a connection failure state at some point.
However, since the conventional high-voltage interlock loop shown in Figs. 2A and 2B forms a high-voltage interlock loop in such a manner that one loop is formed for each connection object, the more the object to be sensed becomes, 220 has a problem in that the process of sensing is complicated and the wiring connection becomes complicated during actual design.
Therefore, there is a need for a high voltage interlock loop monitoring method and apparatus that can detect the position of the connection failure point and the number of the point where the connection failure occurs, and can reduce manufacturing cost because the wiring is not complicated in actual design.
SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art described above, and it is an object of the present invention to provide a method and apparatus for detecting a position of a connection failure point, Voltage interlock loop monitoring apparatus capable of detecting a connection failure, which is not complicated and can reduce manufacturing cost.
Another problem to be solved by the present invention is to provide an apparatus and a method for detecting a connection failure, which can detect a position where a connection failure occurs and a number of points where a connection failure occurs, Voltage interlock loop monitoring method capable of detecting a high-voltage interlock loop.
Another problem to be solved by the present invention is to provide an apparatus and a method for detecting a connection failure, which can detect a position where a connection failure occurs and a number of points where a connection failure occurs, Voltage interlock loop monitoring that can detect a high-voltage interlock loop.
A high-voltage interlock loop monitoring apparatus capable of detecting a connection failure according to an embodiment of the present invention includes:
One or more connections each capable of connecting with one or more connection objects;
One or more resistors connected in parallel to the respective connection objects when the respective connection objects and the respective connection parts are connected; And
A control circuit for calculating a sum of resistance values across each of the resistors and for determining whether to connect each of the connection targets to each of the connections based on a sum of the calculated resistance values,
The connections, the resistors and the control circuit form a closed circuit.
When each of the connection targets and each of the connection units is connected, each of the connection targets may include a short-circuit means for short-circuiting between the ends of each of the one or more resistors.
When each of the connection objects and each of the connection units is connected, each of the connection objects may further include means for transmitting an electric signal or a power output output from the connected connection unit.
The power output output from the connection unit may include a high voltage output from the battery pack of the electric vehicle.
The power output output from the connection unit may include a high voltage output from the battery pack of the energy storage system.
The connection objects may include a connector or a fuse.
The control circuit comprising:
A power source for applying a voltage to a first one of the connection units;
A sense resistor having one end connected to the last one of the connection portions and the other end connected to the power supply; And
Calculating a voltage value across the sense resistor and calculating a sum of the resistance values across each of the one or more resistors connected in parallel to the respective connection object based on the calculated voltage value, And a controller for determining whether or not to connect each of the connection objects.
The resistance values of one or more resistors connected in parallel for each connection object may be the same.
The control circuit calculates the sum of the resistance values across each of the resistors and determines whether or not each of the connection targets for each of the connections is connected and the number of connection objects that are not connected based on the sum of the calculated resistance values You can decide.
Wherein at least one of the resistors connected in parallel to each connection object has different resistance values from each other, each of the resistors having an n-th power of 2, and the n may include an integer equal to or greater than zero.
Wherein the control circuit calculates a sum of resistance values between both ends of each of the resistors, converts the sum of the resistance values into a binary number, and determines whether connection of each of the connection targets to each of the connection units based on the binary number And the position of the connection portion to which the connection object is not connected.
One or more resistors connected in parallel to each of the connection objects have different resistance values from each other, each having resistance values of an n-th power of an integer of 3 or more, and n may include an integer of 0 or more.
Wherein the control circuit calculates the sum of the resistance values across each of the resistors, converts the sum of the resistance values to three or more decimal numbers, and then connects each of the connection targets to each of the connection units based on the ternary number And the position of the connection part to which the connection object is not connected.
A high-voltage interlock loop monitoring apparatus capable of detecting connection failure according to another embodiment of the present invention includes:
A plurality of connections each capable of connecting to a plurality of connection objects, each of the connections comprising: a plurality of connections including a first terminal and a second terminal;
A plurality of resistors connected in series between the first terminal and the second terminal of each of the connection portions;
And a control circuit for calculating a sum of resistance values across each of the resistors and for determining whether to connect each of the connection targets to each of the connections based on the calculated resistance values,
A second terminal of one of the two neighboring connection portions is connected to a first terminal of the other connection portion, and each of the connection objects includes a first terminal and a second terminal, And the second terminal are connected to each other.
The control circuit comprising:
A power source for applying a voltage to a first one of the connection units;
A sense resistor having one end connected to the last connection of the connection portions and the other end connected to the power supply; And
Calculating a sum of the resistance values between the first terminal and the second terminal of each of the connection units based on the calculated voltage value and calculating a sum of the resistance values of the connection targets And a control unit for determining whether or not the received signal is transmitted.
When each of the connection objects and each of the connection units is connected, each of the connection objects may further include means for transmitting an electric signal or a power output output from the connected connection unit.
The power output output from the connection unit may include a high voltage output from the battery pack of the electric vehicle.
The power output output from the connection unit may include a high voltage output from the battery pack of the energy storage system.
The connection objects may include a connector or a fuse.
The resistance values of the resistors connected between the first terminal and the second terminal of the respective connection portions may be the same.
The control circuit calculates the sum of the resistance values across each of the resistors and determines whether to connect each of the connection targets to each of the connections based on the sum of the calculated resistance values, The number can be determined.
The resistors connected between the first terminal and the second terminal of the respective connection portions have different resistance values from each other, each having resistance values of n square powers of 2, and n may include an integer of 0 or more.
Wherein the control circuit calculates a sum of resistance values between both ends of each of the resistors, converts the sum of the resistance values into a binary number, and determines whether connection of each of the connection targets to each of the connection units based on the binary number And the location of the disconnected connection.
Resistors connected between the first terminal and the second terminal of each of the connections have different resistance values from each other, each having resistance values of an n-th power of an integer of 3 or more, and n may include an integer of 0 or more.
Wherein the control circuit calculates the sum of the resistance values across each of the resistors, converts the sum of the resistance values to three or more decimal numbers, and then converts the sum of the resistance values of each of the connection objects It is possible to determine the connection status and the position of the connection section to which the connection object is not connected.
A high-voltage interlock loop monitoring method capable of detecting a connection failure according to an embodiment of the present invention includes:
(A) connecting one or more connection objects to one or more connection parts, respectively, and connecting a resistor for each connection part to which the connection objects are connected so as to be connected in parallel with the respective connection objects;
(B) calculating a sum of resistance values across each of the resistors; And
(C) determining whether to connect each of the connection objects to each of the connections based on the sum of the resistance values.
When each of the connection objects and each of the connection portions is connected, each of the connection objects may include a short-circuit means for short-circuiting between the ends of each of the resistors.
When each of the connection objects and each of the connection units is connected, each of the connection objects may further include means for transmitting an electric signal or a power output output from the connected connection unit.
The power output output from the connection unit may include a high voltage output from the battery pack of the electric vehicle.
The power output output from the connection unit may include a high voltage output from the battery pack of the energy storage system.
The connection objects may include a connector or a fuse.
The resistance values of the resistors connected in parallel to each connection object may be the same.
Wherein the step (C) comprises: calculating a sum of resistance values across each of the resistors and determining whether to connect each of the connection targets to each of the connections based on a sum of the calculated resistance values, And determining the number of connection objects.
Resistors connected in parallel to the respective connection objects have different resistance values from each other, each having resistance values of n square powers of 2, and n may include an integer of 0 or more.
Wherein the step (C) comprises the steps of: calculating a sum of resistance values between the two ends of each of the resistors, converting the sum of the resistance values into a binary number, And determining the position of the connection portion to which the connection object is not connected.
Resistors connected in parallel to each of the connection objects have different resistance values from each other, each having resistance values of an n-th power of an integer of 3 or more, and n may include an integer of 0 or more.
Wherein the step (C) comprises the steps of: calculating a sum of resistance values between each of the resistors, converting a sum of the resistance values into three or more decimal numbers, And the position of the connection point to which the connection object is not connected.
According to the present invention, it is possible to accurately detect whether or not the connection is established based on the sum of the resistance values between both ends of the resistors connected in parallel after connecting the resistors in parallel to the object to be connected, It is possible to detect the position of the connection portion where the connection occurs and the number of connection portions where the connection failure occurs, and the manufacturing cost can be reduced because the wiring is not complicated in actual designing.
Figures 1A-1D illustrate a conventional high voltage interlock loop.
FIG. 1E is a detailed view of the terminals of the second connector and the high voltage interlock loop shown in FIG. 1A.
Figures 2a and 2b show another conventional high voltage interlock loop.
Fig. 3 is a diagram showing an equivalent circuit of the conventional high-voltage interlock loop shown in Fig. 1A.
4 is a diagram illustrating a high-voltage interlock loop monitoring apparatus capable of detecting a connection failure according to an embodiment of the present invention.
5 is a diagram illustrating an equivalent circuit of a high-voltage interlock loop monitoring apparatus capable of detecting a connection failure according to an embodiment of the present invention shown in FIG.
FIG. 6 is a detailed view of the first connector shown in FIGS. 4 and 5 and the terminal of the corresponding high-voltage interlock loop.
7 is a flowchart of a high-voltage interlock loop monitoring method capable of detecting a connection failure according to an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, terms such as " first, "" second," and the like are used to distinguish one element from another element, and the element is not limited thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 4 is a diagram illustrating a high-voltage interlock loop monitoring apparatus capable of detecting a connection failure according to an embodiment of the present invention. FIG. 5 is a block diagram of a high-voltage interlock loop monitoring apparatus according to an embodiment of the present invention, FIG. 7 is a flowchart of a high-voltage interlock loop monitoring method capable of detecting a connection failure according to an embodiment of the present invention. Referring to FIG.
A high-voltage interlock loop monitoring apparatus and method capable of detecting a connection failure according to an embodiment of the present invention will now be described with reference to FIGS. 4 through 7. FIG.
4, a high-voltage interlock loop monitoring apparatus capable of detecting connection failure according to an embodiment of the present invention includes first to
The
The first and
5, the
4 and 5, the connectors are shown as the connection objects 400, 410, and 420, but the present invention is not limited thereto, and the connection objects may include fuses or electronic components.
In the high-voltage interlock loop monitoring apparatus capable of detecting a connection failure according to an embodiment of the present invention shown in FIGS. 4 and 5, the
The
4 and 5, since the
6 is a view showing in detail the
As shown in Fig. 6, the
The
The
First, before describing a high-voltage interlock loop monitoring apparatus and method capable of detecting a connection failure according to an embodiment of the present invention, reference is made to an equivalent circuit of the conventional high-voltage interlock loop of FIG. .
In the conventional high voltage interlock loop, when the
In contrast, a high-voltage interlock loop monitoring apparatus capable of detecting a connection failure according to an embodiment of the present invention shown in FIGS. 4 and 5 is configured such that the first to
The
Since the
Since the
The
When the resistors having the same resistance values are used as the first to third resistors R1 to R3, if the
On the other hand, when resistors having different resistance values R1 = 1Kohm, R2 = 2Kohm and R3 = 4Kohm are used as the first resistor R1 to the third resistor R3, that is, As the resistances R1 to R3, resistors having resistance values of 1, 2, and 4 are used, respectively. If the number of connectors is N, the case where the n-th power of 2 is used as the first to N-th resistors, respectively. Here, N is an integer of 1 or more, and n is 0 to N-1. That is, since a large unit value of resistance can be omitted, resistors having resistance values in which a relation of being a multiple of 2 is formed between connected resistances (first resistor to third resistor) are connected in parallel As resistors.
4 and 5, both ends of the second resistor R2 are short-circuited by the
Since 1 is a binary number '1', 2 is a binary number '10', and '4' is a binary number '100', it indicates a position where its position is 1, . Therefore, the sum of the resistance values can be converted into a binary number so that the location of the connection failure, that is, the location of the connection failure, can be grasped.
In Table 1, when the sum of the resistance values is converted into binary, when the leftmost bit of the converted binary number is regarded as the first bit, each bit of the converted binary number and the connection position It is a table showing the relationship.
If the
When the resistors having the resistance values of the n-th power of 2 are used as the resistors connected in parallel to the connection targets in connection, the
Of course, it is also possible to use different resistance values having an n-square power of an integer of 3 or more, as well as resistance values of n-square powers of 2 as resistance values of the resistors. In this case, the control unit 390 calculates the sum of the resistance values between the both ends of each of the resistors, converts the sum of the resistance values into three or more decimal numbers, It is possible to determine the respective connection states and the positions of the connection sections to which the connection object is not connected.
If the resistance values of the resistors are not different from each other, the resistances of the resistors are different from each other. In this case, It is difficult to accurately detect the position of the connection failure point and whether or not the connection failure has occurred. Therefore, it is preferable that the resistance values of the resistors have different resistance values with an n-th power of an integer of 2 or more.
For example, if a resistor value is used as a resistance value, such as binary, ternary, or the like, each resistance value should not overlap. If 1Kohm, 2Kohm, 4Kohm, 4Kohm are used as the resistance values of the resistors, if one of the 4Kohm resistors is short-circuited, it is impossible to determine which one of the two resistors having the resistance value of 4Kohm is short- It is impossible to accurately grasp the position of the point where the " Therefore, when a value of the form of a decimal value such as binary or ternary is used as the resistance value of the resistors, the resistance values should not overlap with each other.
The high-voltage interlock loop monitoring apparatus and method capable of detecting a connection failure according to an embodiment of the present invention can be applied to a battery pack, a battery module or a battery system of an electric vehicle or an energy storage system, And may be applied to any type of devices that distribute to devices requiring high voltage using connectors or the like. In addition, although the high-voltage interlock loop is described in the present invention, the present invention can be applied not only to a high-voltage interlock loop but also to an interlock loop for detecting whether a general electric signal is connected or not.
The methods discussed herein may be implemented using various means, depending on the application. For example, these methods may be implemented in the form of hardware, firmware, software, or any combination thereof. In an implementation involving hardware, the control circuitry or control portion may comprise one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), field programmable gate arrays (FPGAs), processors, , Microprocessors, electronic devices, other electronic units designed to perform the functions discussed herein, or a combination thereof.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
400:
400b: second terminal of the first connector 401: conductive wiring of the first connector
410: second connector 420: third connector
430: control circuit 440: first connection
440a: first terminal of the first connecting
450:
450b: second terminal of second connection part 460: third connection part
460a: first terminal of the
470: Conductive wiring between the first connection part and the second connection part
471: Conductive wiring between the second connection part and the third connection part
R1: first resistance R2: second resistance
R3: Third resistor R4: Sense resistor
Claims (37)
One or more resistors connected in parallel to the respective connection objects when the respective connection objects and the respective connection parts are connected; And
A control circuit for calculating a sum of resistance values across each of the resistors and for determining whether to connect each of the connection targets to each of the connections based on a sum of the calculated resistance values,
Wherein said connections, said resistors and said control circuit form a closed circuit. ≪ Desc / Clms Page number 13 >
A power source for applying a voltage to a first one of the connection units;
A sense resistor having one end connected to the last one of the connection portions and the other end connected to the power supply; And
Calculating a voltage value across the sense resistor and calculating a sum of the resistance values across each of the one or more resistors connected in parallel to the respective connection object based on the calculated voltage value, And a controller for determining whether or not each of the connection targets is connected to the plurality of connection targets.
A plurality of resistors connected in series between the first terminal and the second terminal of each of the connection portions;
And a control circuit for calculating a sum of resistance values across each of the resistors and for determining whether to connect each of the connection targets to each of the connections based on the calculated resistance values,
A second terminal of one of the two neighboring connection portions is connected to a first terminal of the other connection portion, and each of the connection objects includes a first terminal and a second terminal, And the second terminal are connected to each other. A high-voltage interlock loop monitoring apparatus capable of detecting a connection failure.
A power source for applying a voltage to a first one of the connection units;
A sense resistor having one end connected to the last connection of the connection portions and the other end connected to the power supply; And
Calculating a sum of the resistance values between the first terminal and the second terminal of each of the connection units based on the calculated voltage value and calculating a sum of the resistance values of the connection targets Wherein the high-voltage interlock loop monitoring apparatus includes a control section that determines whether or not the connection failure has occurred.
(B) calculating a sum of resistance values across each of the resistors; And
(C) determining whether to connect each of the connection objects to each of the connections based on the sum of the resistance values.
Calculates the sum of the resistance values across each of the resistors, and determines whether to connect each of the connection targets to each of the connections based on the sum of the calculated resistance values to determine the number of connection objects that are not connected Wherein the high-voltage interlock loop monitoring method comprises the steps of:
Calculating a sum of resistance values between both ends of each of the resistors, converting the sum of the resistance values into binary numbers, determining whether or not each of the connection targets is connected to each of the connection units based on the binary number, And determining a position of a connection that is not connected to the high-voltage interlock loop.
A sum of resistance values between both ends of each of the resistors, converting the sum of the resistance values into three or more decimal numbers, and determining whether or not each of the connection targets for each of the connection units is connected and connected And determining a location of an access point to which the object is not connected.
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| CN108594055A (en) * | 2018-04-26 | 2018-09-28 | 成都雅骏汽车制造有限公司 | A kind of high-tension connector connection status detection circuit |
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| 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 |
| CN112213573A (en) * | 2019-12-30 | 2021-01-12 | 蜂巢能源科技有限公司 | High-voltage interlocking loop detection method and circuit |
| CN113219376A (en) * | 2021-04-29 | 2021-08-06 | 重庆长安汽车股份有限公司 | High-voltage interlocking detection circuit and fault detection method |
| WO2021248961A1 (en) * | 2020-06-12 | 2021-12-16 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking apparatus and detection method therefor |
| CN113945865A (en) * | 2021-09-07 | 2022-01-18 | 广州汽车集团股份有限公司 | High-voltage interlocking circuit, high-voltage wire harness detection method, vehicle and storage medium |
| CN113945865B (en) * | 2021-09-07 | 2024-06-28 | 广州汽车集团股份有限公司 | High-voltage interlock loop, high-voltage harness detection method, vehicle and storage medium |
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| CN108594055A (en) * | 2018-04-26 | 2018-09-28 | 成都雅骏汽车制造有限公司 | A kind of high-tension connector connection status detection circuit |
| CN108594055B (en) * | 2018-04-26 | 2020-06-09 | 成都雅骏汽车制造有限公司 | High-voltage connector connection state detection circuit |
| 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 |
| CN112213573B (en) * | 2019-12-30 | 2023-06-23 | 蜂巢能源科技有限公司 | High-voltage interlocking loop detection method and circuit |
| CN112213573A (en) * | 2019-12-30 | 2021-01-12 | 蜂巢能源科技有限公司 | High-voltage interlocking loop detection method and circuit |
| WO2021248961A1 (en) * | 2020-06-12 | 2021-12-16 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking apparatus and detection method therefor |
| US11927639B2 (en) | 2020-06-12 | 2024-03-12 | Contemporary Amperex Technology Co., Limited | High-voltage interlocking device and method for detecting the high-voltage interlocking device |
| CN113219376A (en) * | 2021-04-29 | 2021-08-06 | 重庆长安汽车股份有限公司 | High-voltage interlocking detection circuit and fault detection method |
| CN113219376B (en) * | 2021-04-29 | 2023-03-14 | 重庆长安汽车股份有限公司 | High-voltage interlocking detection circuit and fault detection method |
| CN113945865A (en) * | 2021-09-07 | 2022-01-18 | 广州汽车集团股份有限公司 | High-voltage interlocking circuit, high-voltage wire harness detection method, vehicle and storage medium |
| CN113945865B (en) * | 2021-09-07 | 2024-06-28 | 广州汽车集团股份有限公司 | High-voltage interlock loop, high-voltage harness detection method, vehicle and storage medium |
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