CN210416480U - Open circuit detection circuit and vehicle - Google Patents
Open circuit detection circuit and vehicle Download PDFInfo
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- CN210416480U CN210416480U CN201921345043.8U CN201921345043U CN210416480U CN 210416480 U CN210416480 U CN 210416480U CN 201921345043 U CN201921345043 U CN 201921345043U CN 210416480 U CN210416480 U CN 210416480U
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Abstract
The utility model provides an open circuit detection circuitry and vehicle, this circuit include first voltage sensor, second voltage sensor, current sensor, direct current converter, battery and alarm device. The device comprises a direct current converter, a first voltage sensor, a second voltage sensor, a current sensor and a warning device, wherein the positive electrode of the direct current converter is connected with the positive electrode of a battery, the negative electrode of the direct current converter is connected with the negative electrode of the battery, the direct current converter is connected with the warning device, the first voltage sensor is connected with the direct current converter and used for detecting a first voltage output by the direct current converter and sending the first voltage to the direct current converter, the second voltage sensor is respectively connected with the battery and the direct current converter and used for detecting the battery voltage of the battery and sending the battery voltage to the direct current converter, the current sensor is connected with the direct current converter and used for detecting current output by the direct current converter and sending the current to the direct current converter, and the direct current converter is used for controlling the warning device to give an alarm according to the difference between the battery voltage.
Description
Technical Field
The embodiment of the utility model provides a relate to vehicle technical field, especially relate to a detection circuitry and vehicle opens a way.
Background
For a pure electric new energy vehicle, all low-voltage electric devices of the vehicle, including charging a low-voltage battery, are powered by a Direct Current/Direct Current (DC/DC) converter. In order to protect the supply lines, low-voltage protection devices are often provided on the DC/DC output side. However, in the driving process, when the safety device is disconnected due to the problems of poor quality and the like, a power supply line is open, the DC/DC cannot supply power to the low-voltage storage battery and electric appliances of the vehicle, the low-voltage storage battery continues to supply power to the electric appliances, and when the voltage of the low-voltage storage battery is less than 9V, the vehicle has the problems of sudden power failure, power loss and the like, so that accidents are easy to happen.
In the prior art, in order to prevent the problem that the voltage of a low-voltage storage battery is less than 9V when the low-voltage storage battery supplies power due to open circuit of a power supply line, a Vehicle Control Unit (VCU) is generally used for detecting the voltage of the low-voltage storage battery, when the voltage of the low-voltage storage battery is detected to be less than 10V, the problem that the power supply line is open circuit is determined, and an alarm is triggered to prompt a driver to take corresponding treatment measures.
However, the inventors found that at least the following problems exist in the prior art: when the voltage of the low-voltage storage battery is lower than 10V, an alarm is triggered to prompt a driver, but the voltage of the low-voltage storage battery reaches the edge of power shortage when the voltage of the low-voltage storage battery is lower than 10V, when the low-voltage storage battery continues to supply power to other electric devices, the voltage of the low-voltage storage battery is pulled down to be lower than 9V within a short time, and the driver can still have the problems of sudden power failure, power loss and the like due to the fact that the time is short and appropriate treatment measures cannot be taken.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an open circuit detection circuitry and vehicle to solve the untimely problem of suggestion navigating mate.
The embodiment of the utility model provides an open circuit detection circuitry, include: the device comprises a first voltage sensor, a second voltage sensor, a current sensor, a direct current converter, a battery and an alarm device;
the positive electrode of the direct current converter is connected with the positive electrode of the battery, the negative electrode of the direct current converter is connected with the negative electrode of the battery, and the direct current converter is connected with the alarm device;
the first voltage sensor is connected with the direct current converter and used for detecting a first voltage output by the direct current converter and sending the first voltage to the direct current converter;
the second voltage sensor is respectively connected with the battery and the direct current converter and used for detecting the battery voltage of the battery and sending the battery voltage to the direct current converter;
the current sensor is connected with the direct current converter and used for detecting the current output by the direct current converter and sending the current to the direct current converter;
and the direct current converter is used for controlling the alarm device to alarm according to the difference value between the battery voltage and the first voltage and the current.
In one possible design, the circuit further includes a vehicle control unit, and the vehicle control unit is connected with the dc converter;
the direct current converter is also used for acquiring circuit fault code information and sending the circuit fault code information to the vehicle control unit;
and the vehicle control unit is used for receiving the circuit fault code information sent by the direct current converter.
In one possible design, the circuit further comprises an over-current detection device;
and the positive electrode of the direct current converter is connected with the positive electrode of the battery through the overcurrent detection device.
In one possible design, the over-current detection device includes a fuse.
In one possible design, the warning device comprises a fault indicator light.
In one possible design, the fault indicator light is a battery fault light on a vehicle instrument.
In one possible design, the alarm device includes a voice player.
In one possible design, the battery is a low-voltage battery.
In one possible design, the open circuit detection circuit and the electric equipment are connected;
the positive electrode of the battery in the open circuit detection circuit is connected with the positive electrode of the electric device, and the negative electrode of the battery in the open circuit detection circuit is connected with the negative electrode of the electric device.
In one possible design, the powered device includes at least one of: the system comprises a motor controller, a vehicle control unit and a battery management device.
The embodiment of the utility model provides an open circuit detection circuit and vehicle, the DC converter in this circuit acquires the first voltage that first voltage sensor gathered DC converter output, current sensor gathers the electric current of DC converter output and the battery voltage of battery that second voltage sensor gathered, DC converter confirms whether there is open circuit trouble according to the difference and the electric current of battery voltage and first voltage, confirm whether there is open circuit trouble in the circuit between DC converter and the battery, if confirm that the power supply line has trouble, control alarm device and report to the police to indicate personnel on the vehicle power supply line have trouble, need not to take corresponding treatment in time, need not wait until the battery voltage of battery is less than 10V, the whole vehicle control unit triggers the warning, can carry out the early warning before the battery voltage is less than 10V, the system can remind people in the vehicle in time to have enough reaction time to take corresponding treatment measures, so that the problems of sudden power failure, power loss and the like are avoided, and the traffic accidents are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a first schematic structural diagram of an open circuit detection circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram ii of an open circuit detection circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram three of an open circuit detection circuit provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a vehicle according to an embodiment of the present invention;
description of reference numerals:
100: an open circuit detection circuit;
110: a first voltage sensor;
120: a second voltage sensor;
130: a current sensor;
140: a DC converter;
150: a battery;
160: an alarm device;
170: a vehicle control unit;
180: an overcurrent detection means;
200: a vehicle;
300: an electric device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For a pure electric vehicle, a power supply end on the vehicle can supply power to an electric appliance through a direct current converter and charge a low-voltage storage battery, and in order to protect a power supply line, a low-voltage safety device is often arranged on a direct current output side of the direct current converter. However, in the driving process, when the safety device is disconnected due to the problems of poor quality and the like, a power supply line is opened, the direct current converter cannot supply power to the low-voltage storage battery and the electric appliances of the vehicle, at the moment, the low-voltage storage battery continues to supply power to the electric appliances by using the electric quantity stored by the low-voltage storage battery, but when the voltage of the low-voltage storage battery is less than 9V, the vehicle has the problems of sudden power failure, power loss and the like, and accidents are easy to happen.
Therefore, in the prior art, in order to prevent the problem that the voltage of the low-voltage battery is less than 9V when the low-voltage battery supplies power due to the open circuit of the power supply line, the voltage of the low-voltage battery is generally acquired through the vehicle control unit, and when the vehicle control unit determines that the voltage of the low-voltage battery is less than 10V, an alarm is given to prompt a person on the vehicle, so that the person on the vehicle can take corresponding treatment measures to avoid an accident. However, when the voltage of the low-voltage storage battery is less than 10V, the low-voltage storage battery is located at the edge of power shortage, at the moment, an alarm is given to prompt people on the vehicle, the people on the vehicle do not have enough reaction time to take corresponding treatment measures, the low-voltage storage battery can be pulled down to be below 9V by other electric appliances, the vehicle still has the problems of sudden power failure, power loss and the like, and accidents can occur.
The application provides an open circuit detection circuit and a vehicle aiming at the problems in the prior art, and the circuit comprises a first voltage sensor, a second voltage sensor, a current sensor, a direct current converter, a battery and an alarm device. The direct current converter determines whether an open circuit fault exists in a power supply line according to the difference value between the voltage output by the direct current converter and the battery voltage of the battery and the voltage output by the direct current converter, if the fault exists in the power supply line, the alarm device is controlled to give an alarm to prompt personnel on the vehicle that the power supply line has the fault, corresponding processing measures need to be taken in time, the vehicle controller does not need to wait until the battery voltage of the battery is lower than 10V, the alarm is triggered by the vehicle controller, early warning can be carried out before the battery voltage is lower than 10V, the personnel on the vehicle can be reminded in time, the vehicle controller has enough reaction time to take the corresponding processing measures, the problems of sudden power failure, power loss and the like. The technical solution of the present invention will be described in detail with specific examples.
Fig. 1 is a schematic structural diagram of an open circuit detection circuit 100 according to an embodiment of the present invention, and as shown in fig. 1, the open circuit detection circuit 100 provided in this embodiment includes a first voltage sensor 110, a second voltage sensor 120, a current sensor 130, a dc converter 140, a battery 150, and an alarm device 160.
The positive electrode of the dc converter 140 is connected to the positive electrode of the battery 150, the negative electrode of the dc converter 140 is connected to the negative electrode of the battery 150, and the dc converter 140 is connected to the alarm device 160.
The first voltage sensor 110 is connected to the dc converter 140, and is configured to detect a first voltage output by the dc converter 140 and send the first voltage to the dc converter 140.
The second voltage sensor 120 is connected to the battery 150 and the dc converter 140, respectively, and detects a battery voltage of the battery 150 and transmits the battery voltage to the dc converter 140.
And a current sensor 130 connected to the dc converter 140, for detecting a current output from the dc converter 140 and sending the current to the dc converter 140.
And the direct current converter 140 is used for controlling the alarm device 160 to give an alarm according to the difference value between the battery voltage and the first voltage and the current.
In this embodiment, the open-circuit detection circuit 100 further includes a power supply terminal, when the vehicle 200 is in the Buck state, that is, in the low-voltage state, it indicates that the vehicle is in the driving process, the power supply terminal charges the battery 150 through the dc converter 140, and therefore, when detecting whether an open-circuit fault exists in a line between the dc converter 140 and the battery 150, it is required to first detect whether the vehicle 200 is in the Buck state, that is, determine whether the vehicle is in the driving process.
When detecting whether the vehicle 200 is in the Buck state, the state of the vehicle 200 can be determined by the current and/or the voltage output by the dc converter 140, and when the voltage output by the dc converter 140 is the preset working voltage and/or the current output by the dc converter 140 is the preset working current, the vehicle 200 is determined to be in the Buck state.
Wherein, the power end can be a power battery. When the power source terminal charges the battery 150 through the dc converter 140, the dc converter converts the voltage output from the power source terminal into a preset low voltage (e.g., 14V), and then charges the battery 150 with the converted voltage.
In the present embodiment, the dc converter 140 receives the first voltage output by the dc converter 140 sent by the first voltage sensor 110, the current output by the dc converter 140 sent by the current sensor 130, and the battery voltage sent by the second voltage sensor 120, determines whether the vehicle 200 is in a Buck state according to the first voltage or the current, determines whether an open-circuit fault exists in a power supply line between the dc converter 140 and the battery 150 according to a difference between the battery voltage and the first voltage and the current when it is determined that the vehicle 200 is in the Buck state, controls the alarm device 160 to alarm if the open-circuit fault exists, and does not need to control the alarm device 160 to alarm if the open-circuit fault does not exist.
When it is determined that the vehicle 200 is not in the Buck state, it is not necessary to detect whether there is an open fault in the line between the dc converter 140 and the battery 150.
When determining whether an open-circuit fault exists in a power supply line between the dc converter 140 and the battery 150 according to a difference between the battery voltage and the first voltage and the current, determining whether the difference between the battery voltage and the first voltage is continuously greater than or equal to a preset voltage within a first preset time and whether the current output by the dc converter 140 is continuously greater than a preset current within the first preset time, and determining that the open-circuit fault exists in the line between the dc converter 140 and the battery 150 when the difference between the battery voltage and the first voltage is continuously greater than or equal to the preset voltage within the first preset time and when the current is continuously less than the preset current within the first preset time.
In order to improve the open fault detection efficiency, it may be determined that the open fault exists in the line between the dc converter 140 and the battery 150 when the difference between the battery voltage and the first voltage is continuously greater than or equal to the preset voltage for the first preset time or when the current is continuously less than the preset current for the first preset time.
When there is an open circuit fault in the line between the dc converter 140 and the battery 150, the current output from the dc converter 140 decreases and the battery 150 and other electrical devices on the vehicle 200 cannot be powered, but the battery 150 continues to supply power to the other electrical devices, so that when the difference between the battery voltage and the first voltage is large, it indicates that the battery 150 may not be charging but is supplying power.
In order to reduce the cost, the current and voltage outputted by the dc converter 140 and the voltage of the battery 150 may be detected by using the dc converter as it is, which can directly detect the current and voltage outputted by the dc converter and the voltage of the battery 150.
In one possible design, the battery 150 is a low voltage battery.
In the present embodiment, when the vehicle 200 is in the Buck state, the power source terminal supplies power to the low-voltage battery through the dc converter 140, and the dc converter 140 detects whether there is an open fault in the line between itself and the low-voltage battery.
The low-voltage storage battery is a storage battery with rated voltage smaller than preset voltage.
In the present embodiment, it is first determined whether the vehicle 200 is in the Buck state according to the first voltage output by the dc converter 140 and/or the current output by the dc converter 140, if it is determined that the vehicle 200 is not in the Buck state, it is not necessary to detect whether an open-circuit fault exists on the line between the dc converter 140 and the battery 150, if it is determined that the vehicle 200 is in the Buck state, it is determined whether a difference between the battery voltage of the battery 150 and the first voltage output by the dc converter 140 is always greater than a preset difference within a first preset time, and it is determined whether the current output by the dc converter 140 is always greater than a preset current within the first preset time, if the difference between the battery voltage and the first voltage is always greater than the preset difference within the first preset time and the current output by the dc converter 140 is always greater than the preset current within the first preset time, it is determined that the open-circuit fault exists on the line between the dc converter 140 and the battery 150, the battery 150 is currently supplying power to other electric devices, so as to control the alarm device 160 to give an alarm and prompt the driver in time, so that the driver can take corresponding fault handling measures in time.
In one possible design, the warning device 160 includes a fault indicator light.
In order to enable a user to timely know that an open circuit fault exists in a line between the direct current converter 140 and the battery 150, the user can give an alarm through light, namely, the user can give an alarm through controlling the fault indicator lamp, and when the user gives an alarm through controlling the fault indicator lamp, the user can give an alarm by controlling the fault indicator lamp to change the color of the fault indicator lamp or flashing, so that the user can directly observe the fault indicator lamp to give an alarm.
Optionally, the fault indicator light is a battery 150 fault light on the vehicle 200 instrument.
In this embodiment, when there is a fault light like the battery 150 on the vehicle 200 instrument, that is, there is a battery 150 fault light, when it is determined that there is an open circuit fault in the line between the dc converter 140 and the battery 150, the alarm may be given by directly lighting the battery 150 fault light to change the color of the battery 150 fault light to a preset color (for example, red) to prompt a person on the vehicle 200 that there is an open circuit fault in the line.
In one possible design, the alarm device 160 includes a voice player.
In order to prevent the light alarm of the fault indicator light from being seen by the person in the vehicle 200, when the alarm is needed, the voice alarm can be performed, that is, the voice player in the alarm device 160 is controlled to play the preset alarm content in a voice mode, so that the person in the vehicle 200 is reminded in time.
From the above description, it can be known that the dc converter in the open-circuit detection circuit acquires the first voltage output by the dc converter collected by the first voltage sensor, the current sensor collects the current output by the dc converter and the battery voltage of the battery collected by the second voltage sensor, the dc converter determines whether the open-circuit fault exists in the power supply line according to the difference between the battery voltage and the first voltage and the current, that is, determines whether the open-circuit fault exists in the line between the dc converter and the battery, if it is determined that the power supply line has the fault, the alarm device is controlled to alarm to prompt the person on the vehicle that the power supply line has the fault, the corresponding processing measures need to be taken in time, the vehicle controller triggers the alarm without waiting until the battery voltage of the battery is lower than 10V, the vehicle controller can give an early warning before the battery voltage is lower than 10V, the system has enough reaction time to take corresponding treatment measures, and avoids the problems of sudden power failure, power loss and the like, thereby avoiding the occurrence of traffic accidents.
Fig. 2 is a schematic structural diagram ii of the open circuit detection circuit 100 according to an embodiment of the present invention, in which the open circuit detection circuit 100 further includes a vehicle control unit 170, and the vehicle control unit 170 is connected to the dc converter 140.
The dc converter 140 is further configured to obtain circuit fault code information and send the circuit fault code information to the vehicle control unit 170.
And the vehicle control unit 170 is configured to receive the circuit fault code information sent by the dc converter 140.
In this embodiment, when it is determined that an open circuit fault exists in the line between the dc converter 140 and the battery 150, the dc converter 140 may further obtain corresponding circuit fault code information, and then send the circuit fault code information to the vehicle controller 170, and the vehicle controller 170 receives and stores the circuit fault code information sent by the dc converter 140, so as to increase the fault reporting speed, and facilitate subsequent maintenance personnel to quickly lock the problem existing in the line according to the circuit fault code information when performing maintenance and detection on the vehicle 200, and take corresponding measures to perform maintenance, thereby improving the maintenance efficiency.
Optionally, after the circuit fault code information is acquired, the dc converter 140 may also store the circuit fault code information.
Fig. 3 is a third schematic structural diagram of the open circuit detection circuit 100 provided in the embodiment of the present invention, as shown in fig. 3, the open circuit detection circuit 100 further includes an overcurrent detection device 180.
The positive electrode of the dc converter 140 is connected to the positive electrode of the battery 150 via the overcurrent detecting device 180.
In one possible design, the over-current detection device 180 includes a fuse.
In order to protect the power supply line and prevent the power supply line between the dc converter and the battery 150 from generating a short-circuit and a large current, which may cause the line to be in fire failure, a fuse is often disposed in the power supply line between the dc converter and the battery 150.
In this embodiment, during driving, the fuse may be broken or the current-carrying capacity of the fuse may be weakened due to its own mass problem or vibration of the vehicle 200, so that an open-circuit fault may exist in the power supply line between the dc converter and the battery 150, and therefore, during driving, that is, when the vehicle 200 is in a Buck state, it is necessary to detect whether an open-circuit fault exists in the power supply line between the dc converter and the battery 150.
Fig. 4 is a schematic structural diagram of a vehicle 200 according to an embodiment of the present invention, and as shown in fig. 3, the vehicle 200 includes the open circuit detection circuit 100 and the electric device 300 according to the embodiment.
The positive electrode of the battery 150 in the open circuit detection circuit 100 is connected to the positive electrode of the electric device 300, and the negative electrode of the battery 150 in the open circuit detection circuit 100 is connected to the negative electrode of the electric device 300.
In the present embodiment, the positive electrode of the electric device is connected to the positive electrode of the battery 150, the negative electrode of the electric device is connected to the negative electrode of the battery 150, during driving, when there is no open-circuit fault in the line between the dc converter and the battery 150, the power source terminal supplies power to the electric device through the dc converter and charges the battery 150, and when there is an open-circuit fault in the line between the dc converter and the battery 150, the power source terminal cannot supply power to the electric device through the dc converter or cannot charge the battery 150, and at this time, the battery 150 supplies power to the electric device by using the stored electric quantity.
In one possible design, powered device 300 includes at least one of: motor controller, vehicle control unit 170, battery management equipment.
The Motor Controller (MCU), the vehicle Control Unit 170, and the Battery Management System (BMS) are all low-voltage power devices.
Optionally, the electric device may also include other low-voltage electric devices on the vehicle 200.
Alternatively, the vehicle 200 may be a pure electric vehicle, that is, the vehicle 200 runs by using a vehicle-mounted power supply as power and driving wheels with a motor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. An open circuit detection circuit, comprising: the device comprises a first voltage sensor, a second voltage sensor, a current sensor, a direct current converter, a battery and an alarm device;
the positive electrode of the direct current converter is connected with the positive electrode of the battery, the negative electrode of the direct current converter is connected with the negative electrode of the battery, and the direct current converter is connected with the alarm device;
the first voltage sensor is connected with the direct current converter and used for detecting a first voltage output by the direct current converter and sending the first voltage to the direct current converter;
the second voltage sensor is respectively connected with the battery and the direct current converter and used for detecting the battery voltage of the battery and sending the battery voltage to the direct current converter;
the current sensor is connected with the direct current converter and used for detecting the current output by the direct current converter and sending the current to the direct current converter;
and the direct current converter is used for controlling the alarm device to alarm according to the difference value between the battery voltage and the first voltage and the current.
2. The circuit of claim 1, further comprising a vehicle control unit coupled to the dc converter;
the direct current converter is also used for acquiring circuit fault code information and sending the circuit fault code information to the vehicle control unit;
and the vehicle control unit is used for receiving the circuit fault code information sent by the direct current converter.
3. The circuit of claim 1, further comprising an over-current detection device;
and the positive electrode of the direct current converter is connected with the positive electrode of the battery through the overcurrent detection device.
4. The circuit of claim 3, wherein the over-current detection device comprises a fuse.
5. The circuit of claim 1, wherein the alarm device comprises a fault indicator light.
6. The circuit of claim 5, wherein the fault indicator light is a battery fault light on a vehicle instrument.
7. The circuit of claim 1, wherein the alarm device comprises a voice player.
8. The circuit of claim 1, wherein the battery is a low voltage battery.
9. A vehicle characterized by comprising the open circuit detection circuit according to any one of claims 1 to 8 and an electric device;
the positive electrode of the battery in the open circuit detection circuit is connected with the positive electrode of the electric device, and the negative electrode of the battery in the open circuit detection circuit is connected with the negative electrode of the electric device.
10. The vehicle of claim 9, wherein the powered device comprises at least one of: the system comprises a motor controller, a vehicle control unit and a battery management device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921345043.8U CN210416480U (en) | 2019-08-19 | 2019-08-19 | Open circuit detection circuit and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921345043.8U CN210416480U (en) | 2019-08-19 | 2019-08-19 | Open circuit detection circuit and vehicle |
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| CN210416480U true CN210416480U (en) | 2020-04-28 |
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| CN201921345043.8U Active CN210416480U (en) | 2019-08-19 | 2019-08-19 | Open circuit detection circuit and vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238169A (en) * | 2021-03-16 | 2021-08-10 | 联合汽车电子有限公司 | Land loss detection method, readable storage medium and vehicle |
| CN113805097A (en) * | 2020-06-17 | 2021-12-17 | 广州汽车集团股份有限公司 | DC/DC broken line detection method and device, controller and automobile |
| WO2023160412A1 (en) * | 2022-02-22 | 2023-08-31 | 北京车和家汽车科技有限公司 | Vehicle-mounted direct-current to direct-current converter state identification method and apparatus, device, and medium |
-
2019
- 2019-08-19 CN CN201921345043.8U patent/CN210416480U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113805097A (en) * | 2020-06-17 | 2021-12-17 | 广州汽车集团股份有限公司 | DC/DC broken line detection method and device, controller and automobile |
| CN113238169A (en) * | 2021-03-16 | 2021-08-10 | 联合汽车电子有限公司 | Land loss detection method, readable storage medium and vehicle |
| CN113238169B (en) * | 2021-03-16 | 2024-04-16 | 联合汽车电子有限公司 | Method for detecting missing ground, readable storage medium, and vehicle |
| WO2023160412A1 (en) * | 2022-02-22 | 2023-08-31 | 北京车和家汽车科技有限公司 | Vehicle-mounted direct-current to direct-current converter state identification method and apparatus, device, and medium |
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