CN118549815B - Detection assembly, battery assembly and vehicle - Google Patents

Abstract

The invention discloses a detection assembly, a battery assembly and a vehicle, and is used in the technical field of vehicles. The detection assembly comprises a connecting piece, an interlocking detection pole and an interlocking detection circuit. The connecting piece is used for connecting the negative electrode of the battery and the vehicle; the interlock detecting circuit is connected to the interlock detecting pole, and the interlock detecting circuit is configured to detect a connection state of the connection member and the interlock detecting pole, the connection state including a coupled state and a disconnected state. By detecting the position of the connection member on the negative electrode by the interlock detecting electrode, it is possible to determine whether the connection relationship of the negative electrode and the connection member is in the coupled state or the disconnected state. At the moment, under the condition that the vehicle is maintained and the negative electrode and the connecting piece are in the coupling state, the vehicle can be determined to be electrified, and the negative electrode and the connecting piece are required to be disconnected again, so that electric shock accidents are avoided; under the condition that the vehicle is in a running state and the negative electrode and the connecting piece are in a disconnected state, poor contact between the negative electrode and the connecting piece can be determined, so that the vehicle is required to be maintained, and the vehicle is prevented from being ignited.

Description

Testing components, battery packs and vehicles

Technical Field

The present invention relates to the field of vehicle technology, and more specifically, to a detection component, a battery component and a vehicle.

Background Art

At present, when new energy vehicles are being repaired, maintenance personnel are required to disconnect the low-voltage maintenance switch and the negative pole of the vehicle's starting battery and the front electronic control DC bus to make the vehicle de-energized.

However, many maintenance personnel of new energy vehicles are accustomed to only disconnecting the negative pole of the starting battery and the front electronic control DC busbar for maintenance. However, only disconnecting the negative pole of the starting battery can achieve that the whole vehicle will not be powered on when there is no high voltage. However, when the vehicle has delayed power-off, smart charging, and self-power-on when the door is opened, the new energy vehicle may still be powered when the screen is off. At this time, maintenance personnel who perform maintenance without understanding the connection state of the negative pole of the starting battery are prone to electric shock accidents. In addition, during the driving of new energy vehicles, there is a situation where the negative pole of the starting battery and the connector are in poor contact, and the negative pole of the starting battery will continue to heat up, which is easy to cause the vehicle to catch fire.

Summary of the invention

The embodiments of the present invention provide a detection component, a detection component and a vehicle that can solve or improve at least one of the above-mentioned technical problems.

A detection component in an embodiment of the present invention is used for a vehicle. The detection component includes a connector, an interlock detection pole, and an interlock detection circuit. The connector is used to connect the negative pole of the battery and the vehicle; the interlock detection circuit is connected to the interlock detection pole, and the interlock detection circuit is configured to detect the connection state between the connector and the interlock detection pole, and the connection state includes a coupled state and a disconnected state.

In this way, by interlocking the detection pole to detect the position of the connector on the battery cell, the connection relationship between the negative electrode and the connector can be determined, and thus whether the negative electrode and the connector are in a coupled state or a disconnected state can be determined. At this time, when the vehicle is being repaired and it is determined that the negative electrode and the connector are in a coupled state, it can be determined that the vehicle is charged and the negative electrode and the connector need to be disconnected again to avoid electric shock accidents; when the vehicle is in a driving state and the negative electrode and the connector are in a disconnected state, it can be determined that the negative electrode and the connector are in poor contact, so the vehicle needs to be repaired to avoid vehicle fire.

In certain embodiments, the detection assembly further includes an insulating member, and the interlock detection electrode is connected to the negative electrode via the insulating member.

In this way, the interlock detection electrode and the negative electrode are isolated by the insulating member, and the detection condition for detecting the negative electrode and the connecting member can be formed by detecting whether the current flows from the negative electrode to the interlock detection electrode.

In certain embodiments, the interlock detection electrode and the negative electrode are connected via the insulating member to form an electrode assembly, the connecting member is provided with a through hole, the electrode assembly passes through the through hole, and the outer peripheral surface of the electrode assembly is adapted to the shape of the through hole.

In this way, by setting a through hole on the connecting piece, and the through hole can be adapted to the outer peripheral surface of the motor assembly, the electrode assembly can pass through the through hole, so that the connecting piece can contact the interlocking detection pole and the negative pole at the same time, or only contact the negative pole, to form the detection conditions for detecting the negative pole and the connecting piece.

In certain embodiments, the detection assembly further includes a fastener, the connecting member includes a first clamping arm and a second clamping arm, and the first clamping arm and the second clamping arm clamp the electrode assembly via the fastener.

In this way, the first clamping arm and the second clamping arm of the connector clamp the electrode assembly through the fastener, which can prevent the connector from having poor contact with the negative electrode, avoid heating of the detection assembly and causing the vehicle to catch fire, and improve driving safety.

In certain embodiments, the interlock detection circuit is configured to determine that the connector and the interlock detection pole are in a coupled state when the interlock detection pole is in contact with the connector; and the interlock detection circuit is configured to determine that the connector and the interlock detection pole are in a disconnected state when the interlock detection pole is separated from the connector.

In this way, by the connecting piece contacting the interlock detection pole and the negative pole at the same time, it can be determined that the connecting piece and the interlock detection pole are in a coupled state, so that the current flows from the negative pole to the interlock detection pole; by the connecting piece not contacting the interlock detection pole, it can be determined that the connecting piece and the interlock detection pole are in a disconnected state, avoiding the current from the negative pole to the interlock detection pole.

In certain embodiments, the interlock detection circuit includes a detection module, a photoelectric coupler and a controller, wherein the photoelectric coupler connects the detection module and the controller, and when the connecting member and the interlock detection pole are in a coupled state, the detection module is configured to output a trigger signal to put the photoelectric coupler in a first state, and the controller is configured to output a power-off signal to the vehicle according to the first state of the photoelectric coupler; when the connecting member and the interlock detection pole are in a disconnected state, the detection module is configured to output a trigger signal to put the photoelectric coupler in a second state, and the controller is configured to output an alarm signal to the vehicle according to the second state of the photoelectric coupler.

In this way, by connecting the photoelectric coupler to the detection module and the controller, the power-off signal and the alarm signal generated by the controller can be controlled by the on and off of the photoelectric coupler, thereby avoiding external interference that causes the controller to generate erroneous control signals, and increasing the rate at which the control signal is generated, so that protective measures can be taken in time when a vehicle failure occurs.

In certain embodiments, the detection component includes a battery management system, which is connected to the controller, and the controller is configured to send the power-off signal and the alarm signal to the battery management system, and the battery management system is configured to send the power-off signal and the alarm signal to the vehicle controller of the vehicle, so that the vehicle controller controls the power-off of the vehicle according to the power-off signal and controls the vehicle alarm according to the alarm signal.

In this way, by connecting the controller to the battery management system, the controller generates a power-off signal and an alarm signal which are transmitted to the vehicle controller through the battery management system, so that the vehicle can take protective measures in time according to the power-off signal or the alarm signal.

In some embodiments, the detection module includes a first resistor, a second resistor and a third resistor, the first resistor, the second resistor and the interlock detection electrode are connected in series in sequence, and one end of the first resistor is connected to a first power supply; one connection end of the photoelectric coupler is connected between the first resistor and the second resistor through the third resistor, and the other connection end of the photoelectric coupler is connected to the second power supply.

In this way, by setting a plurality of resistors and power supplies in the detection module, the level in the detection module can be adjusted to control the on and off of the photoelectric coupler to generate a power-off signal and an alarm signal.

In certain embodiments, the detection component includes a control module, which connects the photoelectric coupler and the controller, and the control module includes a fourth resistor and a fifth resistor, the photoelectric coupler and the controller are connected between the fourth resistor and the fifth resistor, one end of the fourth resistor is connected to a third power supply, and the photoelectric coupler is configured to control the conduction and disconnection of the control module.

Thus, by setting a resistor and a power supply in the control module and connecting the photocoupler and the controller through the control module, the level in the module and the on and off of the photocoupler can be controlled to generate a power-off signal and an alarm signal.

The battery assembly according to the embodiment of the present invention comprises a battery and the detection assembly described in any one of the above embodiments.

The vehicle according to the embodiment of the present invention includes the detection component described in any one of the above embodiments.

Additional aspects and advantages of embodiments of the present invention will be given in part in the following description and in part will be obvious from the following description or learned through practice of embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a schematic diagram of the structure of a vehicle according to some embodiments of the present invention;

FIG2 is a schematic diagram of the structure of a detection assembly according to some embodiments of the present invention;

3 is a schematic diagram of the structure of a connector and an interlock detection electrode in a coupled state in certain embodiments of the present invention;

FIG4 is a cross-sectional view of the detection assembly taken along line IV-IV in FIG3 ;

5 is a schematic diagram of the structure of the connector and the interlock detection pole in a disconnected state in some embodiments of the present invention;

FIG6 is a cross-sectional view of the detection assembly in FIG5 taken along line VI-VI;

FIG. 7 is a circuit diagram of an interlock detection circuit according to some embodiments of the present invention.

Description of Figure Numbers:

100. Vehicle; 10. Detection assembly; 12. Electrode assembly; 121. Negative electrode; 122. Interlock detection electrode; 123. Insulator; 124. Positive electrode; 13. Connector; 131. Through hole; 132. First clamping arm; 133. Second clamping arm; 14. Interlock detection circuit; 141. Detection module; 1411. First resistor; 1412. Second resistor; 1413. Third resistor; 1414. First power source; 1415. Second power source; 142. Photocoupler; 143. Controller; 144. Control module; 1441. Fourth resistor; 1442. Fifth resistor; 1443. Third power source; 15. Fastener; 16. Battery management system; 20. Vehicle controller; 30. Vehicle body; 40. Battery assembly; 41. Battery.

DETAILED DESCRIPTION

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numerals and/or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and/or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may appreciate the application of other processes and/or the use of other materials.

In the related art, when the vehicle is under maintenance, the whole vehicle can be powered off under high voltage by disconnecting the connection between the negative electrode of the battery and the vehicle body. However, when the vehicle is in delayed power-off, smart charging, or automatic power-on when the door is opened, the whole vehicle can be charged when the screen is off. Disconnecting the negative electrode of the battery alone cannot reduce the high voltage of the whole vehicle. At this time, if the maintenance personnel perform vehicle maintenance work, electric shock accidents may occur. In addition, when the vehicle is driving, there is a situation where the negative electrode of the battery and the connector are loose. At this time, when the vehicle is started, if the negative electrode of the battery and the connector are in poor contact, the negative electrode of the battery will continue to heat up, which may cause the vehicle to catch fire.

In order to solve the above technical problems, an embodiment of the present invention provides a detection component 10.

Referring to FIGS. 1 to 6 , a detection assembly 10 according to an embodiment of the present invention is used for a vehicle 100. The detection assembly 10 includes a connector 13, an interlock detection electrode 122, and an interlock detection circuit 14. The connector 13 is used to connect the negative electrode 121 of the battery 41 and the vehicle 100; the interlock detection circuit 14 is connected to the interlock detection electrode 122, and the interlock detection circuit 14 is configured to detect the connection state between the connector 13 and the interlock detection electrode 122, and the connection state includes a coupled state and a disconnected state.

In this way, by detecting the position of the connector 13 on the battery 41 through the interlock detection electrode 122, the connection relationship between the negative electrode 121 and the connector 13 can be determined, so that it can be determined whether the negative electrode 121 and the connector 13 are in a coupled state or a disconnected state. At this time, when the vehicle 100 is being repaired and it is determined that the negative electrode 121 and the connector 13 are in a coupled state, it can be determined that the vehicle 100 is charged and the negative electrode 121 and the connector 13 need to be disconnected again to avoid electric shock accidents; when the vehicle 100 is in a driving state and the negative electrode 121 and the connector 13 are in a disconnected state, it can be determined that the negative electrode 121 and the connector 13 are in poor contact, so the vehicle 100 needs to be repaired to avoid the vehicle 100 catching fire.

Specifically, the vehicle 100 may be a fuel vehicle or a new energy vehicle including a detection component 10. The battery assembly 40 included in the vehicle 100 can provide the vehicle 100 with the electric energy required for driving. The battery assembly 40 includes a battery 41, and the detection component 10 includes a connector 13, an interlock detection electrode 122, and an interlock detection circuit 14. Among them, the battery 41 includes a negative electrode 121 and a positive electrode 124, and the negative electrode 121 can be connected to the body 30 of the vehicle 100 through the wiring harness on the connector 13, so that the current can return to the positive electrode 124 through the body 30, thereby simplifying the circuit of the vehicle 100, reducing the number of circuit wires, and reducing the difficulty of assembly, maintenance, and the cost of the vehicle 100.

The interlock detection pole 122 can be connected to the interlock detection circuit 14 , and the interlock detection circuit 14 is connected to the negative pole 121 through the interlock detection pole 122 and the connector 13 , so that the interlock detection circuit 14 can detect the connection state between the connector 13 and the interlock detection pole 122 .

For example, when the current in the interlock detection circuit 14 can flow into the negative electrode 121 through the interlock detection electrode 122, that is, the interlock detection electrode 122 is in contact with the connector 13, it can be detected that the interlock detection electrode 122 and the connector 13 are in a coupled state; when the current in the interlock detection circuit 14 cannot flow into the negative electrode 121 through the interlock detection electrode 122, that is, the interlock detection electrode 122 is separated from the connector 13, it can be detected that the interlock detection electrode 122 and the connector 13 are in a disconnected state. In this way, by the connector 13 contacting the interlock detection electrode 122 and the negative electrode 121 at the same time, it can be determined that the connector 13 and the interlock detection electrode 122 are in a coupled state, so that the current flows from the negative electrode 121 to the interlock detection electrode 122; by the connector 13 not contacting the interlock detection electrode 122, it can be determined that the connector 13 and the interlock detection electrode 122 are in a disconnected state, avoiding the current from the negative electrode 121 to the interlock detection electrode 122.

Please refer to FIG. 2 to FIG. 6 . In some embodiments, the detection assembly 10 further includes an insulating member 123 , and the interlock detection electrode 122 is connected to the negative electrode 121 through the insulating member 123 .

In this way, the interlock detection electrode 122 and the negative electrode 121 are isolated by the insulating member 123 , and the detection condition for detecting the negative electrode 121 and the connector 13 can be formed by detecting whether the current flows from the negative electrode 121 to the interlock detection electrode 122 .

Specifically, the detection assembly 10 further includes an insulating member 123, which may be an insulating sheet made of materials such as polypropylene, polyimide, glass fiber, polyethylene terephthalate, and polycarbonate. The shape of the insulating member 123 is adapted to the cross-section of the negative electrode 121 and the cross-section of the interlocking detection electrode 122, and the insulating member 123 is disposed between the interlocking detection electrode 122 and the negative electrode 121, so that the interlocking detection electrode 122 and the negative electrode 121 are insulated.

Please refer to Figures 3 to 6. In some embodiments, the interlock detection electrode 122 and the negative electrode 121 are connected through an insulating member 123 to form an electrode assembly 12. The connecting member 13 is provided with a through hole 131. The electrode assembly 12 is penetrated by the through hole 131. The outer peripheral surface of the electrode assembly 12 is adapted to the shape of the through hole 131.

In this way, by setting a through hole 131 on the connecting member 13, and the through hole 131 can be adapted to the outer peripheral surface of the motor assembly, so that the electrode assembly 12 can pass through the through hole 131, so that the connecting member 13 can contact the interlocking detection electrode 122 and the negative electrode 121 at the same time, or only contact the negative electrode 121, so as to form the detection condition for detecting the negative electrode 121 and the connecting member 13.

Specifically, the interlock detection electrode 122 and the negative electrode 121 can form an electrode assembly 12, and the electrode assembly 12 can be used as a carrier for transmitting current. A through hole 131 is provided on the connecting member 13, and the outer peripheral surface of the electrode assembly 12 can be adapted to the shape of the through hole 131, so that the electrode assembly 12 can pass through the through hole 131.

For example, the shape of the electrode assembly 12 can be a cylinder or a prism, so that the shape of the outer peripheral surface of the electrode assembly 12 can be a circular rectangle, and the shape of the through hole 131 on the connecting member 13 can be set to be circular or rectangular, so that the electrode assembly 12 passes through the through hole 131.

Please refer to Figures 3 to 6. In some embodiments, the detection assembly 10 also includes a fastener 15. The connecting member 13 includes a first clamping arm 132 and a second clamping arm 133. The first clamping arm 132 and the second clamping arm 133 clamp the electrode assembly 12 through the fastener 15.

In this way, the first clamping arm 132 and the second clamping arm 133 of the connector 13 clamp the electrode assembly 12 through the fastener, which can prevent the connector 13 from having poor contact with the negative electrode 121, avoid heating of the detection assembly 10 and cause the vehicle 100 to catch fire, and improve driving safety.

Specifically, the detection assembly 10 further includes a fastener 15, which can be used to fasten the connector 13. By arranging a first clamping arm 132 and a second clamping arm 133 on the connector 13, the first clamping arm 132 and the second clamping arm 133 can cooperate with the fastener 15, so that the connector 13 clamps the electrode assembly 12.

For example, the fastener 15 can be a bolt, and screw holes are formed on the first clamping arm 132 and the second clamping arm 133, so that the bolt can pass through the screw holes to fasten the first clamping arm 132 and the second clamping arm 133, so that the connecting member 13 can fix the electrode assembly 12; the fastener 15 can be a pin, and pin holes are formed on the first clamping arm 132 and the second clamping arm 133, so that the pin can pass through the pin holes to fasten the first clamping arm 132 and the second clamping arm 133, so that the connecting member 13 can fix the electrode assembly 12.

Please refer to Figure 7. In some embodiments, the interlock detection circuit 14 includes a detection module 141, a photoelectric coupler 142 and a controller 143. The photoelectric coupler 142 connects the detection module 141 and the controller 143. When the connector 13 and the interlock detection pole 122 are in a coupled state, the detection module 141 is configured to output a trigger signal to put the photoelectric coupler 142 in a first state, and the controller 143 is configured to output a power-off signal to the vehicle 100 according to the first state of the photoelectric coupler 142; when the connector 13 and the interlock detection pole 122 are in a disconnected state, the detection module 141 is configured to output a trigger signal to put the photoelectric coupler 142 in a second state, and the controller 143 is configured to output an alarm signal to the vehicle 100 according to the second state of the photoelectric coupler 142.

In this way, by connecting the photoelectric coupler 142 to the detection module 141 and the controller 143, the controller 143 can be controlled to generate a power-off signal and an alarm signal by turning on and off the photoelectric coupler 142, thereby avoiding external interference that causes the controller 143 to generate an erroneous control signal, and increasing the rate at which the control signal is generated, so that protective measures can be taken in time when a fault occurs in the vehicle 100.

Specifically, the interlock detection circuit 14 includes a detection module 141, a photocoupler 142 and a controller 143, wherein the photocoupler 142 can connect the detection module 141 and the controller 143. The detection module 141 can detect the connection state between the connector 13 and the interlock detection electrode 122, the photocoupler 142 can be turned on and off according to the connection state between the connector 13 and the interlock detection electrode 122, and the controller 143 can generate a control signal according to the on and off of the photocoupler 142.

When the detection module 141 detects that the connector 13 and the interlock detection electrode 122 are in a coupled state, the interlock detection electrode 122 is in a grounded state. At this time, the voltage in the detection module 141 is at a low level, so that the detection module 141 can generate a low-level trigger signal, and output the trigger signal to the photocoupler 142, so that the photocoupler 142 is in a first state, that is, the photocoupler 142 is in a disconnected state according to the trigger signal, and then the controller 143 can output a power-off signal to the vehicle 100 according to the disconnected state of the photocoupler 142, and control the vehicle 100 to perform a power-off operation. When the connector 13 and the interlock detection electrode 122 are in a disconnected state, the interlock detection electrode 122 is not in a grounded state. At this time, the voltage in the detection module 141 is at a high level, so that the detection module 141 can generate a high-level trigger signal, and output the trigger signal to the photocoupler 142, so that the photocoupler 142 is in the second state, that is, the photocoupler 142 is in a conductive state according to the trigger signal, and then the controller 143 can output an alarm signal to the vehicle 100 according to the conductive state of the photocoupler 142, and control the vehicle 100 to perform an alarm operation.

Please refer to Figure 1 again. In some embodiments, the detection component 10 includes a battery management system 16, and the battery management system 16 is connected to the controller 143. The controller 143 is configured to send a power-off signal and an alarm signal to the battery management system 16. The battery management system 16 is configured to send a power-off signal and an alarm signal to the vehicle controller 20 of the vehicle 100, so that the vehicle controller 20 controls the vehicle 100 to power off according to the power-off signal and controls the vehicle 100 to alarm according to the alarm signal.

In this way, by connecting the controller 143 to the battery management system 16, the controller 143 generates a power-off signal and an alarm signal which are transmitted to the vehicle controller 20 through the battery management system 16, so that the vehicle 100 can take protective measures in time according to the power-off signal or the alarm signal.

Specifically, the detection component 10 also includes a battery management system 16 (Battery Management System, BMS), which can monitor the voltage, current, temperature and other key parameters of each battery 41 in the detection component 10 in real time, and ensure that the battery 41 works within a reasonable range of the remaining power of the battery 41 by estimating the state of charge of the battery 41, that is, the remaining power of the battery 41, to prevent overcharging or over-discharging. In addition, the battery management system 16 can be connected to the controller 143 in communication, so that the power-off signal and alarm signal generated by the controller 143 can be transmitted to the battery management system 16.

The vehicle control unit (VCU) 20 of the vehicle 100 can be communicatively connected with the battery management system 16, so that the power-off signal and the alarm signal can be transmitted to the vehicle control unit 20, and the vehicle control unit 20 can control the vehicle 100 to execute the power-off strategy and the alarm strategy according to the power-off signal and the alarm signal.

For example, after the vehicle controller 20 receives the power-off signal, the vehicle controller 20 will first confirm whether the received power-off signal is valid and correct to avoid misoperation. When it is determined that the power-off signal is valid, the vehicle controller 20 can control the vehicle 100 to shut down unnecessary power supplies or modules to reduce energy consumption and potential risks during the power-off process. In the process of the vehicle 100 performing the power-off operation, in order to avoid problems that may be caused by immediate power-off, the vehicle controller 20 can control the vehicle 100 to perform a delayed power-off operation. For example, the vehicle 100 is controlled to wait for a certain time (such as 1 second or longer) to ensure that all vehicle 100 systems have enough time to complete the power-off operation, and during the waiting period of the vehicle 100, the vehicle controller 20 can save the operating data and status information of the vehicle 100 so that it can be restored or provided for reference when it is powered on next time. The operating data and status information can be the speed, position, battery status, fault information, etc. of the vehicle 100. After the delay ends, the vehicle controller 20 will send a power-off instruction to the controllers 143 of each component of the vehicle 100 to control them to perform power-off operations in sequence. For example, the vehicle controller 20 can send a power-off command to the motor controller, the battery management system 16, the air conditioning controller, etc. During the power-off process, the vehicle controller 20 can also control the vehicle 100 to perform safety operations, such as the discharge processing of the motor, the isolation protection of the battery 41, etc., to prevent potential safety hazards. After all components have completed the power-off operation, the vehicle controller 20 will power off itself to end the entire power-off process. After the power-off is completed, the vehicle controller 20 may feedback the status information of the power-off completion to the user or external system through indicator lights, display screens or communication interfaces.

For another example, when the vehicle 100 is driving, the vehicle controller 20 receives an alarm signal, indicating that the interlock detection circuit 14 detects that the connection state between the connector 13 and the interlock detection electrode 122 is disconnected. In this state, the vehicle 100 continues to drive and easily causes the electrode assembly 12 to heat up, thereby affecting driving safety. At this time, the vehicle controller 20 can control the vehicle 100 to emit an alarm voice, control the display screen of the vehicle 100 to display alarm text, control the alarm display light of the vehicle 100 to flash, or control the vehicle 100 to emit an alarm prompt sound, etc., according to the alarm signal, to remind the user to stop the car for a safety check.

Please refer to Figure 7. In some embodiments, the detection module 141 includes a first resistor 1411, a second resistor 1412 and a third resistor 1413. The first resistor 1411, the second resistor 1412 and the interlock detection electrode 122 are connected in series in sequence. One end of the first resistor 1411 is connected to the first power supply 1414; one connection end of the photoelectric coupler 142 is connected between the first resistor 1411 and the second resistor 1412 through the third resistor 1413, and the other connection end of the photoelectric coupler 142 is connected to the second power supply 1415.

In this way, by setting a plurality of resistors and power supplies in the detection module 141 , the level in the detection module 141 can be adjusted to control the on and off of the photocoupler 142 to generate a power-off signal and an alarm signal.

Specifically, the detection module 141 includes a first resistor 1411, a second resistor 1412 and a third resistor 1413. One end of the first resistor 1411 can be connected to the first power supply 1414, the other end of the first resistor 1411 is connected to one end of the second resistor 1412, and the other end of the second resistor 1412 can be connected to the interlock detection electrode 122, so that the first resistor 1411, the second resistor 1412 and the interlock detection electrode 122 are connected in series in sequence.

One connection end of the photocoupler 142 can be connected between the first resistor 1411 and the second resistor 1412 through the third resistor 1413, and the other connection end of the photocoupler 142 can be connected to the second power supply 1415. In addition, when the interlock detection circuit 14 detects that the connector 13 and the interlock detection electrode 122 are in a coupled state, the first resistor 1411 and the second resistor 1412 can cooperate so that the voltage of the detection module 141 is less than the voltage of the second power supply 1415, that is, the voltage of the detection module 141 is less than the turn-on voltage of the photocoupler 142. For example, the resistance of the first resistor 1411 may be 10 kilo-ohms, the resistance of the second resistor 1412 may be 2 kilo-ohms, the resistance of the third resistor 1413 may be 1 kilo-ohm, the voltage of the first power supply 1414 may be 13.8 volts, and the voltage of the second power supply 1415 may be 5 volts; when the interlock detection circuit 14 detects that the connector 13 and the interlock detection electrode 122 are in a coupled state, the voltage of the detection module 141 may be 2.3 volts, so that the voltage of the detection module 141 is less than the voltage of the second power supply 1415, so that the photoelectric coupler 142 is in a disconnected state. When the interlock detection circuit 14 detects that the connector 13 and the interlock detection electrode 122 are in a disconnected state, the voltage of the detection module 141 may be 13.8 volts, so that the voltage of the detection module 141 is greater than the voltage of the second power supply 1415, so that the photoelectric coupler 142 is in a conducting state.

Please refer to Figure 7. In some embodiments, the detection component 10 includes a control module 144, which is connected to the photocoupler 142 and the controller 143. The control module 144 includes a fourth resistor 1441 and a fifth resistor 1442. The photocoupler 142 and the controller 143 are connected between the fourth resistor 1441 and the fifth resistor 1442. One end of the fourth resistor 1441 is connected to the third power supply 1443. The photocoupler 142 is configured to control the conduction and disconnection of the control module 144.

In this way, by setting a resistor and a power supply in the control module 144 and connecting the photocoupler 142 and the controller 143 through the control module 144, the level in the control module 144 and the on and off of the photocoupler 142 can be controlled to generate a power-off signal and an alarm signal.

Specifically, the detection component 10 also includes a control module 144, which can be used to connect the photocoupler 142 and the controller 143. The control module 144 includes a fourth resistor 1441 and a fifth resistor 1442, one end of the fourth resistor 1441 can be connected to the third power supply 1443, the other end of the fourth resistor 1441 is connected to one end of the fifth resistor 1442, and the other end of the fifth resistor 1442 can be connected to the ground terminal, and the photocoupler 142 and the controller 143 are connected between the fourth resistor 1441 and the fifth resistor 1442, so that the on and off of the photocoupler 142 can control the on and off of the control module 144, and the controller 143 generates a corresponding power-off signal and an alarm signal.

For example, the resistance of the fourth resistor 1441 may be 10 kilo-ohms, the resistance of the fifth resistor 1442 may be 2 kilo-ohms, and the voltage of the third power supply 1443 is 5 volts. When the photocoupler 142 is turned on, the control module 144 is in the on state, the control module 144 is at a high level, and the controller 143 can generate a power-off signal or an alarm signal when detecting a high level.

In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are optional and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims (9)

1. A detection assembly for a vehicle, the detection assembly comprising:

the connecting piece is provided with a through hole and is used for connecting the negative electrode of the battery and the vehicle;

an interlock detecting electrode;

The interlocking detection electrode is connected with the negative electrode through the insulating piece, an electrode assembly is formed by connecting the interlocking detection electrode with the negative electrode through the insulating piece, the electrode assembly penetrates through the through hole, and the outer peripheral surface of the electrode assembly is matched with the shape of the through hole;

An interlock detection circuit connected to the interlock detection pole, the interlock detection circuit configured to detect a connection state of the connection member and the interlock detection pole, the connection state including a coupled state and a disconnected state.

2. The sensing assembly of claim 1, further comprising a fastener, wherein the connector comprises a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm clamp the electrode assembly via the fastener.

3. The detection assembly of claim 1, wherein the interlock detection circuit is configured to determine that the connector is in a coupled state with the interlock detection pole if the interlock detection pole is in contact with the connector; the interlock detecting circuit is configured such that the connection member is in a disconnected state from the interlock detecting pole with the interlock detecting pole separated from the connection member.

4. The detection assembly of claim 1, wherein the interlock detection circuit comprises a detection module, a photo coupler, and a controller, the photo coupler connecting the detection module and the controller, the detection module configured to output a trigger signal to place the photo coupler in a first state when the connector is in a coupled state with the interlock detection pole, the controller configured to output a down signal to the vehicle according to the first state of the photo coupler;

When the connecting piece and the interlocking detection pole are in a disconnected state, the detection module is configured to output a trigger signal to enable the photoelectric coupler to be in a second state, and the controller is configured to output an alarm signal to the vehicle according to the second state of the photoelectric coupler.

5. The detection assembly of claim 4, wherein the detection assembly includes a battery management system coupled to the controller, the controller configured to send the power-down signal and the alarm signal to the battery management system, the battery management system configured to send the power-down signal and the alarm signal to a vehicle controller of the vehicle to cause the vehicle controller to control the vehicle to power down in accordance with the power-down signal and to control the vehicle to alarm in accordance with the alarm signal.

6. The detection assembly of claim 4, wherein the detection module comprises a first resistor, a second resistor and a third resistor, the first resistor, the second resistor and the interlocking detection pole are sequentially connected in series, and one end of the first resistor is connected with a first power supply;

one connecting end of the photoelectric coupler is connected between the first resistor and the second resistor through the third resistor, and the other connecting end of the photoelectric coupler is connected with a second power supply.

7. The detection assembly of claim 6, comprising a control module connecting the optocoupler and the controller, the control module comprising a fourth resistor and a fifth resistor, the optocoupler and the controller being connected between the fourth resistor and the fifth resistor, one end of the fourth resistor being connected to a third power source, the optocoupler being configured to control on and off of the control module.

8. A battery assembly comprising a battery and the detection assembly of any one of claims 1-7.

9. A vehicle comprising the detection assembly of any one of claims 1-7 or the battery assembly of claim 8.