Charging control circuit with charging-prohibition riding function

Abstract

The utility model discloses a charging control circuit with the function of forbidding riding when charging, and the two-pin and three-pin of battery charger are electrically connected and short-circuited, and the negative pole of charging voltage of battery charger is provided, the two-pin and three-pin of battery charging port are electrically connected and short-circuited, and the negative pole of charging voltage of battery charging port is provided, the positive and negative poles of charging voltage of battery charging port are respectively electrically connected with the two ends of relay coil, the contact state of relay power-off is normally closed contact, and the two normally closed contact terminals of relay are respectively electrically connected with the two plug-in terminals of power supply connector, one of the two normally closed contact terminals is electrically connected with the 8-pin of CN4 terminal group in whole vehicle controller through power supply connector, the 4-pin of CN4 terminal group is electrically connected with motor brake, and the other of the two normally closed contact terminals is electrically connected with motor brake through power supply connector. The function that whole vehicle charging brake drop line cannot move and cannot ride is realized.

Description

Technical Field

[0001] This utility model relates to an electric wheelchair, and more particularly to a vehicle charging control circuit used in an electric wheelchair. Background Technology

[0002] Electric wheelchairs or mobility scooters generally refer to transportation or assistive devices designed for mobility purposes. They are typically small cars, electric bicycles, electric mobility scooters, and electric wheelchairs used to replace human walking, meeting the needs of people with good mobility for longer distances or those with mobility impairments, thereby improving efficiency in travel and errands. However, current electric wheelchairs or mobility scooters only have the function of charging and driving; they do not consider how to prevent the owner or user from starting and driving the electric wheelchair or mobility scooter while it is charging, thus leading to safety hazards. Utility Model Content

[0003] This utility model addresses the current situation where existing electric wheelchairs or mobility scooters only have charging and riding functions, without considering how to prevent the owner or user from starting the electric wheelchair or mobility scooter during charging, thus causing safety hazards. It provides a charging control circuit with a charging prohibition function that can effectively ensure that the electric wheelchair or mobility scooter cannot be started while performing charging tasks. The design is simple and effectively protects riding safety and vehicle safety.

[0004] The specific technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a charging control circuit with a charging prohibition riding function, including a vehicle controller, a motor brake, a battery box and its battery pack and battery charging port, characterized in that: it also includes a relay, a power connector and a battery charger, the 2nd and 3rd pins of the battery charger are electrically short-circuited and are the negative terminal of the charging voltage of the battery charger, the 2nd and 3rd pins of the battery charging port are electrically short-circuited and are the negative terminal of the charging voltage of the battery charging port; the two ends of the relay coil are respectively electrically connected to the positive and negative terminals of the charging voltage of the battery charging port, the contact state of the relay when de-energized is a normally closed contact, and the two normally closed contact terminals of the relay are respectively plugged into and electrically connected to the two plug terminals of the power connector, one of the two normally closed contact terminals is electrically connected to the 8th pin of the CN4 terminal group in the vehicle controller after passing through the power connector, the 4th pin of the CN4 terminal group is electrically connected to the motor brake, and the other normally closed contact terminal is electrically connected to the motor brake after passing through the power connector. It effectively ensures that the motor brake will not lose power when the whole vehicle is charging, ensuring reliable and effective braking. It can also effectively prevent the electric wheelchair or mobility scooter from starting its riding function while the whole vehicle is charging. The design is simple and effectively ensures riding safety and vehicle safety.

[0005] Preferably, the positive and negative terminals of the battery charging port are electrically connected to the B+ and B- terminals in the vehicle controller via a power connector.

[0006] Preferably, the power connector uses a plug-in connector assembly with at least 4 pins. Increasing the number of terminals in the power connector ensures effectiveness.

[0007] The beneficial effects of this utility model are: it can effectively ensure that the electric wheelchair or mobility scooter cannot start the riding function when performing the charging task; the design is simple and effectively ensures riding safety and vehicle safety; it realizes the function that the whole vehicle cannot move or be ridden when the wire is disconnected. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the charging control circuit of this utility model, which has a charging prohibition function for riding. Detailed Implementation

[0009] Figure 1 In the illustrated embodiment, a charging control circuit with a charging-prohibited riding function includes a vehicle controller U2, a motor brake U4, a battery box U1 with its battery pack U6 and a battery charging port U5, and also includes a relay K1, a power connector U4, and a battery charger U7. Pins 2 and 3 of the battery charger are electrically shorted and are the negative terminal of the charging voltage. Pins 2 and 3 of the battery charging port are also electrically shorted and are the negative terminal of the charging voltage. The two ends of the relay coil are electrically connected to the positive and negative terminals of the charging voltage at the battery charging port, respectively. When the relay is de-energized, the contact... The relay's two normally closed contacts are electrically connected to the two terminals of the power connector U3 (i.e., the relay's 3rd and 4th contacts are electrically connected to the 3rd and 4th terminals of the power connector U3, respectively). One of the normally closed contacts is connected to pin 8 of the CN4 terminal group in the vehicle controller via the power connector. Pin 4 of the CN4 terminal group is then connected to the motor brake. The other normally closed contact is also connected to the motor brake via the power connector. The CN4 terminal group uses a 4.2mm pitch connector, model 5557-8R.

[0010] The positive and negative terminals of the battery charging port are electrically connected to the B+ and B- terminals in the vehicle controller via a power connector. This is also connected to the battery, allowing charging from this point.

[0011] The power connector uses a plug-in connector assembly with at least 4 pins.

[0012] During operation, the vehicle controller U2 has a disconnection and relocation function for the motor brake U4, which is reflected in the disconnection detection function of pins 8 and 4 of CN4. Based on this, an additional vehicle wiring design is added. U7 is the battery charger, with pins 2 and 3 of U7 shorted together. When the battery charging port U5 on the battery box U1 is plugged in, pins 2 and 3 of the battery charging port U5 are shorted together, becoming the negative terminal of the charging voltage. At this time, pin 1 of relay K1 receives the negative voltage of the battery charging port U5, and pin 2 receives the positive voltage of the charger at the battery charging port U5. The coil of relay K1 itself is energized, and pins 3 and 4 of relay K1 are disconnected. Pin 3 of relay K1 is connected to pin 3 of power connector U3, and pin 4 of relay K1 is connected to pin 4 of power connector U3. This will subsequently cause pins 3 and 4 of power connector U3 to disconnect. Afterwards, controller U2 immediately detects the disconnection of pins 8 and 4 of CN4, achieving the function that the vehicle cannot start, move, or be ridden if the charging connection is interrupted.

[0013] In the description of the positional relationship in this utility model, terms such as "inner", "outer", "upper", "lower", "left", and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] The above content and structure describe the basic principles, main features, and advantages of this utility model, which should be understood by those skilled in the art. The examples and descriptions above are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A charging control circuit with a charging-prohibition-riding function, comprising a vehicle controller, a motor brake, a battery box and its battery pack and battery charging port, characterized in that: It also includes a relay, a power connector, and a battery charger. Pins 2 and 3 of the battery charger are electrically shorted and are the negative terminal of the charging voltage of the battery charger. Pins 2 and 3 of the battery charging port are electrically shorted and are the negative terminal of the charging voltage of the battery charging port. The two ends of the relay coil are electrically connected to the positive and negative terminals of the charging voltage of the battery charging port, respectively. When the relay is de-energized, the contact state is normally closed. The two normally closed contact terminals of the relay are respectively plugged into and electrically connected to the two plug-in terminals of the power connector. One of the two normally closed contact terminals is electrically connected to pin 8 of the CN4 terminal group in the vehicle controller through the power connector. Pin 4 of the CN4 terminal group is electrically connected to the motor brake. The other normally closed contact terminal is electrically connected to the motor brake through the power connector.

2. The charging control circuit with charging-prohibited riding function according to claim 1, characterized in that: The positive and negative terminals of the battery charging port are electrically connected to the B+ and B- terminals in the vehicle controller via a power connector.

3. The charging control circuit with charging-prohibited riding function according to claim 1, characterized in that: The power connector is a plug-in connector assembly with at least 4 pins.

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