CN114323470A - Electric connection device and water inlet detection method thereof - Google Patents

Abstract

The invention discloses an electric connecting device and a water inlet detection method thereof, wherein the electric connecting device comprises a vehicle end electric connecting device and a battery end electric connecting device which are mutually matched to realize electric connection, and when the vehicle end electric connecting device and the battery end electric connecting device are matched to realize electric connection, the vehicle end electric connecting device and the mating end of the battery end electric connecting device are respectively connected through a sealing piece to form a closed cavity body, and the water inlet detection method is characterized by comprising the following steps: and detecting whether water enters the closed cavity or not, and if so, generating a trigger signal. Whether this scheme carries out water real-time detection through carrying out in the closed cavity, can be effective, initiative, the water proofness of rapid judgement connector, after detecting the closed cavity and intake, can send warning information according to trigger signal to and remind the user in time to have the risk of intaking, and then can be convenient for the user to carry out in time the maintenance to electric connecting device spare, further improve the security of driving a vehicle.

Description

Electrical connection device and water ingress detection method thereof

technical field

The invention belongs to the field of intelligent detection of power exchange equipment, and particularly relates to an electrical connection device and a water inflow detection method thereof.

Background technique

For driving safety, electric vehicles have strict requirements on the tightness of the electrical connection device. Since the battery of the battery-changing version is often disassembled and assembled, each disassembly and assembly will pull the seal of the electrical connection device used to seal the vehicle end and the battery end. After the sealing ring is pulled for many times, it is easy to cause the sealing effect to decrease, and during the driving process of the vehicle, if the sealing of the vehicle-end connector and the battery-end connector fails, once the vehicle passes through the wading road, water will enter the two. In the sealed cavity formed by the connector butt joint, it is easy to cause unsafe driving. In addition, when the battery pack is installed for other reasons, water may enter the sealed cavity between the two connectors when the electric vehicle is replaced Risk cannot be identified.

Chinese invention patent CN201811642277.9 published on July 7, 2020 discloses an electrical connector, which is a battery end connecting part of a quick-change connector, and is used to connect with a battery pack. There is a sealing detection device, which detects the air pressure in the cavity formed after the electrical connector and the vehicle-end electrical connector are butted and electrically connected. However, when the water ingress is not caused by poor sealing, for example, when the battery pack is installed due to other reasons during the battery replacement operation, water enters the sealed cavity between the two connectors, and the air pressure in the detection cavity cannot be known at this time. Risk of water ingress.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an electrical connection device and a water ingress detection method thereof in order to overcome the defect in the prior art that the power exchange connection device cannot timely and effectively identify the risk of water ingress leading to unsafe driving.

The present invention solves the above-mentioned technical problems through the following technical solutions:

A water ingress detection method for an electrical connection device, the electrical connection device comprises a vehicle end electrical connection device and a battery end electrical connection device that cooperate with each other to realize electrical connection, the vehicle end electrical connection device and the battery end electrical connection device When the electrical connection is realized through cooperation, the mating ends of the vehicle end electrical connection device and the battery end electrical connection device are respectively connected through a sealing member to form a closed cavity, and the water inflow detection method includes:

It is detected whether water has entered the closed cavity, and if so, a trigger signal is generated.

The sealing performance of the closed cavity after the battery terminal electrical connection device and the vehicle terminal electrical connection device are matched is easy to fail. This solution can effectively, actively and quickly determine the water tightness of the connector by detecting whether there is water in the closed cavity in real time. It can also detect the water ingress caused by the power exchange operation, further improving the safety of driving.

Preferably, the water inflow detection method includes:

It is detected whether the water entering the closed cavity reaches a preset height, and if so, a trigger signal is generated.

A certain risk is confirmed only after the water intake of the closed cavity after the battery end electrical connection device and the vehicle end electrical connection device are matched reaches a certain height. to identify.

Preferably, after generating the trigger signal, the water inflow detection method further includes:

The warning information is issued according to the trigger signal.

When it is detected that the closed cavity has entered the water, a warning message is issued according to the trigger signal, and the user is reminded of the risk of water intrusion in time, which can facilitate the user to repair the electrical connection device in time and ensure the safety of subsequent driving.

An electrical connection device, the electrical connection device comprises a vehicle end electrical connection device and a battery end electrical connection device that cooperate with each other to achieve electrical connection, and when the vehicle end electrical connection device and the battery end electrical connection device cooperate to achieve electrical connection, the The sealing element is respectively connected to the mating ends of the vehicle end electrical connection device and the battery end electrical connection device to form a closed cavity, and the electrical connection device further includes at least one detection element;

The detection element includes a detection part, and the detection part extends into the closed cavity;

The detection element is used to realize the above-mentioned water inflow detection method of the electrical connection device.

The detection component extends into the closed cavity to detect the water inflow of the closed cavity, so that the electrical connection device can realize the active judgment of water tightness according to the trigger signal generated by the water inflow, and can timely find out the water tightness performance of the electrical connection device after battery replacement. It can also detect the water ingress caused by the power exchange operation, further improving the safety of driving.

Preferably, the detection element is mounted on the vehicle end electrical connection device, and the detection portion extends into the electrical connection area between the vehicle end electrical connection device and the battery end electrical connection device of the closed cavity.

The electrical connection area between the vehicle-end electrical connection device and the battery-end electrical connection device is a high-risk area. Once water enters, the performance of the entire electrical connection device will be greatly affected. Therefore, the detection part is specially arranged to protrude into the closed cavity. The electrical connection area between the vehicle end electrical connection device and the battery end electrical connection device to improve the detection accuracy.

Preferably, the detection element further comprises a signal generating part;

The signal generating part is connected to the detection part, and is used for generating a trigger signal after the detection part detects that water has entered the closed cavity.

Preferably, the detection component further includes a signal transmission part;

The signal transmission part is respectively connected with the signal generation part and the external controller, and is used for sending the trigger signal generated by the signal generation part to the external controller.

The signal generation part of the detection element is used in conjunction with the signal transmission part. The generation part is used to generate a trigger signal in time when water is detected, and send it to the external controller through the signal transmission part in time, so that the external controller can discover the electrical connection in time. The watertight performance of the device after power exchange.

Preferably, the detection part includes two probes, and the two probes protrude into the closed cavity from the side where the vehicle end electrical connection device and the battery end connection device are butted;

The two probes are used for conducting in the state of contact with water;

The signal generating unit is configured to generate the trigger signal when the two probes are turned on.

Through the arrangement of the two probes, it is possible to simply and directly know whether water has entered the closed cavity, and the implementation is simple and easy, and the cost is low.

Preferably, the signal transmission part is connected to a low-voltage signal line of the vehicle-end electrical connection device, so as to transmit the trigger signal to the external controller through the low-voltage signal line.

In order to ensure that the detection component can timely and effectively send the trigger signal of whether water enters to the external controller, the transmission of the trigger signal is realized through the low-voltage signal line of the electric connection device at the vehicle end.

Preferably, the detection component further includes a power input part;

The power input part is connected to the low-voltage power supply line of the vehicle-end electrical connection device to supply power to the detection element.

In order to ensure that the detection component can continue to work, the detection component is powered through the low-voltage power supply line of the vehicle-end electrical connection device.

Preferably, the length of the two probes extending out of the vehicle-end electrical connection device is less than the length of the conductive pole of the vehicle-end electrical connection device.

By extending the length of the probe out of the vehicle-end electrical connection device to be less than the length of the conductive electrode post, the setting of the probe will not affect the connection of the conductive electrode post in the vehicle-end electrical connection device and the battery-end electrical connection device, and the probe can also be protected. The pins are not easily damaged by being touched by the conductive poles of the battery terminal electrical connection device.

Preferably, the heights of the two probes are lower than the heights of the conductive poles of the vehicle-end electrical connection device.

The electrical connection area between the vehicle-side electrical connection device and the battery-side electrical connection device is a high-risk area. Once water enters, the performance of the entire electrical connection device will be greatly affected. When the vehicle-end electrical connection device is in use, the conductive electrode The side of the column is vertical or nearly vertical to the bottom surface, so the vertical direction of the electrical connection area must ensure the effectiveness of water ingress detection. The height of the conductive poles of the electrical connection device on the vehicle end so that the hazard can be detected before the water has wetted the conductive poles.

Preferably, the vehicle-end electrical connection device includes a housing, and the detection element is connected inside the housing;

and / or,

The detection element is a water immersion sensor;

and / or,

The trigger signal is a dry contact signal.

The present application adopts the water immersion sensor as the detection element, which is simple and convenient and has low cost.

The positive improvement effect of the present invention is that: through real-time detection of whether water is carried out in the closed cavity, the water tightness of the connector can be judged effectively, actively and quickly. , timely reminding the user that there is a risk of water ingress, thereby facilitating timely maintenance of the electrical connection device by the user, and further improving the safety of driving.

Description of drawings

FIG. 1 is a flowchart of a water ingress detection method of an electrical connection device according to Embodiment 1 of the present invention.

FIG. 2 is a schematic connection diagram of an electrical connection device according to Embodiment 2 of the present invention.

FIG. 3 is a partial structural schematic diagram of a vehicle-end electrical connection device according to Embodiment 2 of the present invention.

FIG. 4 is a partial structural schematic diagram of the detection element in the electrical connection device according to Embodiment 2 of the present invention.

FIG. 5 is a schematic diagram of a module of a detection element in a vehicle-end electrical connection device according to Embodiment 2 of the present invention.

FIG. 6 is a first schematic diagram of the distribution of conductive poles and probes in the electrical connection device according to Embodiment 2 of the present invention.

FIG. 7 is a second schematic diagram of the distribution of conductive poles and probes in the electrical connection device according to Embodiment 2 of the present invention.

FIG. 8 is a partial structural schematic diagram of a vehicle-end electrical connection device according to Embodiment 3 of the present invention.

Detailed ways

The present invention is further described below by way of examples, but the present invention is not limited to the scope of the described examples.

Example 1

A method for detecting water ingress of an electrical connection device, the electrical connection device comprises a vehicle end electrical connection device and a battery end electrical connection device that cooperate with each other to realize electrical connection, and the vehicle end electrical connection device and the battery end electrical connection device cooperate to realize electrical connection When , the mating ends of the vehicle-end electrical connection device and the battery-end electrical connection device are respectively connected through a seal to form a closed cavity. As shown in Figure 1, the water ingress detection method includes:

Step 10: Detect whether water has entered the closed cavity, if yes, go to Step 20; if not, continue to detect;

Step 20, generating a trigger signal;

Step 30: Send out warning information according to the trigger signal.

In this embodiment, step 20 may also include the following implementations:

Detect whether the water entering the closed cavity reaches a preset height.

In this embodiment, the water-tightness of the connector can be judged effectively, actively and quickly by real-time detection of whether there is water in the closed cavity, and the water ingress caused by the power exchange operation can also be detected. When the closed cavity is detected After the water enters, a warning message can be issued according to the trigger signal to remind the user of the risk of water intrusion in time, thereby facilitating the user to repair the electrical connection device in time, and further improving the safety of driving.

Example 2

An electrical connection device, as shown in FIG. 2 , the electrical connection device includes a vehicle-end electrical connection device 1 and a battery-end electrical connection device 2 that cooperate with each other to achieve electrical connection. The vehicle-end electrical connection device 1 and the battery-end electrical connection device 2. When the electrical connection is realized by mating, the mating ends of the vehicle-end electrical connection device 1 and the battery-end electrical connection device 2 are respectively connected through the seal to form a closed cavity. As shown in Figure 3-4, the electrical connection device also includes at least one detection Element 3; the detection element 3 is a water immersion sensor; the trigger signal is a dry contact signal.

The detection element 3 includes a detection part 31, and the detection part 31 extends into the closed cavity; the detection element 3 is used to implement the water ingress detection method of the electrical connection device of the first embodiment. Among them, the detection part 31 extends into the closed cavity to detect the water inflow of the closed cavity, so that the electric connection device can realize the active judgment of water tightness according to the trigger signal generated by the water inflow, and can timely find out the watertightness of the electric connection device after the battery is replaced. performance and further improve driving safety.

The vehicle-end electrical connection device 1 includes a housing 11 , and the detection element 3 is connected inside the housing 11 .

The detection element 3 is installed on the vehicle end electrical connection device 1 , and the detection portion 31 extends into the electrical connection area 4 between the vehicle end electrical connection device 1 and the battery end electrical connection device 2 in the closed cavity. It should be noted that the electrical connection area 4 between the vehicle end electrical connection device 1 and the battery end electrical connection device 2 belongs to a high-risk area. Once water enters, the performance of the entire electrical connection device will be greatly affected. Therefore, the detection unit 31 In particular, an electrical connection area 4 between the vehicle end electrical connection device 1 and the battery end electrical connection device 2 extending into the closed cavity is provided to improve the detection accuracy.

As shown in FIG. 5 , the detection element 3 further includes a signal generating part 32 ; the signal generating part 32 is connected with the detection part 31 , and is used for generating a trigger signal after the detection part 31 detects that water has entered the closed cavity.

The detection part 31 also includes a signal transmission part 33; the signal transmission part 33 is respectively connected with the signal generation part 32 and the external controller, and is used for sending the trigger signal generated by the signal generation part 32 to the external controller. The signal transmission part 33 is connected to the low-voltage signal line of the vehicle-end electrical connection device 1 to transmit the trigger signal to the external controller through the low-voltage signal line.

It should be noted that the signal generation part 32 of the detection element 3 is used in conjunction with the signal transmission part 33. The generation part is used to generate a trigger signal in time when water ingress is detected, and send it to the external controller through the signal transmission part 33 in time. In order for the external controller to timely find out the watertight performance of the electrical connection device after the power exchange.

The detection part 31 also includes a power input part 34 ; the power input part 34 is connected to the low-voltage power supply line of the vehicle-end electrical connection device 1 to supply power to the detection element 3 .

It should be noted that the low-voltage signal line and the low-voltage power supply line of the aforementioned vehicle-end electrical connection device 1 are in practice the PIN pins (or referred to as pins, pins) of the vehicle-end electrical connection device 1. The structure of the connecting device 1 can refer to the structure of the vehicle-end electrical connector described in the published document CN109119792A. The vehicle-end electrical connector has 20 low-voltage PIN pins, of which PIN pins 3 and 4 can be used as low-voltage power supply lines and The power input part 34 is connected, and the PIN pin 11 and the PIN pin 12 can be connected to the signal transmission part 33 as a low-voltage signal line.

The detection part 31 includes two probes, and the two probes protrude into the closed cavity from the side where the vehicle end electrical connection device 1 is connected to the battery end connection device; the two probes are used for conducting electricity in the state of contacting water .

As shown in Figure 6-7, in order to prevent the setting of the probe from affecting the connection between the conductive poles of the vehicle-end electrical connection device and the battery-end electrical connection device, it can also protect the probe from being easily damaged by the conductive electrodes of the battery-end electrical connection device. The length of the two probes protruding from the vehicle-end electrical connection device 1 is less than the length of the conductive poles 12 of the vehicle-end electrical connection device 1. Since there are several conductive poles 12, two probes are preferred. The length protruding from the vehicle end electrical connection device 1 is less than the length of the shortest conductive pole.

When the vehicle-end electrical connection device is in use, the side of the conductive pole is usually vertical or nearly vertical to the bottom surface. In order to ensure the effectiveness of water ingress detection in the vertical direction in the electrical connection area 4, the height of the two probes is lower The height of the conductive pole 12 of the vehicle-end electrical connection device 1 . When the electrical connection device is installed on the vehicle, the probe is relatively close to the ground, and there are generally multiple conductive poles of the vehicle-end electrical connection device 1, including two high-voltage poles, several low-voltage poles, and two probes. The height of the needle is preferably lower than the height of the lowest conductive pole.

The signal generator 32 is used to generate a trigger signal when the two probes are turned on.

In this embodiment, the detection element 3 is used to detect whether there is water in the closed cavity in real time, which can effectively, actively and quickly determine the water tightness of the connector. When it is detected that the closed cavity enters the water, a warning message can be issued according to the trigger signal. , timely reminding the user that there is a risk of water ingress, thereby facilitating timely maintenance of the electrical connection device by the user, and further improving the safety of driving.

Example 3

An electrical connection device, the electrical connection device includes a vehicle end electrical connection device and a battery end electrical connection device, as shown in FIG. 8 , taking the vehicle end electrical connection device 1 as an example, the electrical connection device also includes at least one detection element 3 .

The detection element 3 includes a detection portion 31, and the detection portion 31 extends into the interior of the vehicle-end electrical connection device 1; the detection element 3 is used to detect water ingress of the vehicle-end electrical connection device.

The detection part 31 includes two probes, and the two probes extend into the interior of the vehicle-end electrical connection device 1 ; the two probes are used to conduct electricity in a state of contacting water to generate a trigger signal.

The detection element further includes a signal generation part; the signal generation part is connected with the detection part, and is used for generating a trigger signal after the detection part detects that water has entered the closed cavity.

The detection part further includes a signal transmission part; the signal transmission part is respectively connected with the signal generation part and the external controller, and is used for sending the trigger signal generated by the signal generation part to the external controller. The signal transmission part is connected with the low-voltage signal line of the vehicle-end electrical connection device, so as to transmit the trigger signal to the external controller through the low-voltage signal line.

The detection component also includes a power input part; the power input part is connected with the low-voltage power supply line of the vehicle-end electrical connection device to supply power to the detection element.

In this embodiment, the detection element is used to detect whether water is carried out in the electrical connection device in real time, which can effectively, actively and quickly determine the water tightness of the connector. When it is detected that the electrical connection device has entered water, a warning message can be issued according to the trigger signal. , timely reminding the user that there is a risk of water ingress, thereby facilitating timely maintenance of the electrical connection device by the user, and further improving the safety of driving.

The difference between the third embodiment and the second embodiment is that the detection part 31 extends into the interior of the vehicle-end electrical connection device 1 instead of the closed cavity formed after the vehicle-end electrical connection device 1 and the battery-end electrical connection device 2 are electrically connected together. .

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an illustration, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (13)

1. The utility model provides an electric connector's detection method that intakes, electric connector includes car end electric connector and the battery end electric connector that mutually support and realize the electricity and connect, when car end electric connector and the cooperation of battery end electric connector realize the electricity and connect, connect respectively through the sealing member car end electric connector with the cooperation of battery end electric connector in order to form and seal the cavity, characterized in that, the detection method that intakes includes:

and detecting whether water enters the closed cavity or not, and if so, generating a trigger signal.

2. The method for detecting water ingress of an electrical connection device as claimed in claim 1, wherein the method for detecting water ingress comprises:

and detecting whether the water in the closed cavity reaches a preset height, and if so, generating a trigger signal.

3. The method of detecting water ingress of an electrical connection device of claim 1, wherein after generating the trigger signal, the method further comprises:

and sending out warning information according to the trigger signal.

4. An electric connecting device comprises a vehicle end electric connecting device and a battery end electric connecting device which are mutually matched to realize electric connection, and when the vehicle end electric connecting device and the battery end electric connecting device are matched to realize electric connection, the vehicle end electric connecting device and the battery end electric connecting device are respectively connected with the matching ends of the vehicle end electric connecting device and the battery end electric connecting device through sealing pieces to form a closed cavity;

the detection element comprises a detection part, and the detection part extends into the closed cavity;

the detection element is used for realizing the water inlet detection method of the electric connection device as claimed in any one of claims 1 to 3.

5. The electrical connection device of claim 4, wherein the sensing element is mounted on the vehicle end electrical connection device and the sensing portion extends into an electrical connection area between the vehicle end electrical connection device and the battery end electrical connection device of the enclosed cavity.

6. The electrical connection device as claimed in claim 4, wherein the sensing element further comprises a signal generating portion;

the signal generation portion with the detection portion links to each other for detect at the detection portion intake after generating the trigger signal in the closed cavity.

7. The electrical connection device as claimed in claim 6, wherein the sensing part further comprises a signal transmission part;

the signal transmission part is respectively connected with the signal generation part and the external controller and is used for transmitting the trigger signal generated by the signal generation part to the external controller.

8. The electrical connection device as claimed in claim 6 wherein the sensing portion comprises two probes extending into the enclosed cavity from a side of the vehicle end electrical connection device that interfaces with the battery end connection device;

the two probes are used for conducting in a state of contacting water;

the signal generating part is used for generating the trigger signal when the two probes are conducted.

9. The electrical connection device as claimed in claim 7, wherein the signal transmission part is connected with a low voltage signal line of a vehicle-end electrical connection device to transmit the trigger signal to the external controller through the low voltage signal line.

10. The electrical connection device as recited in claim 6, wherein the detection component further comprises a power input;

the power input part is connected with a low-voltage power supply line of the vehicle-end electric connection device to supply power to the detection element.

11. The electrical connection device as claimed in claim 8 wherein the length of the two probes extending out of the vehicle end electrical connection device is less than the length of the conductive pole of the vehicle end electrical connection device.

12. The electrical connection device as claimed in claim 8 wherein the two probes have a height less than the height of the conductive posts of the cart-end electrical connection device.

13. The electrical connection device as claimed in claim 4 wherein said vehicle end electrical connection device includes a housing, said sensing element being attached to an interior of said housing;

and/or the presence of a gas in the gas,

the detection element is a water immersion sensor;

and/or the presence of a gas in the gas,

the trigger signal is a dry contact signal.

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