Electric vehicle, brake auxiliary circuit and brake auxiliary system thereof

Abstract

According to the brake auxiliary circuit, a power-off switch is connected into the auxiliary circuit, when the electric vehicle runs normally, the power-off switch is switched on, the auxiliary circuit is switched off, and when the electric vehicle brakes or the power-off switch breaks down, the power-off switch is switched on, and the auxiliary circuit is switched on; the emergency switch is connected to the auxiliary circuit; the controller is connected to the auxiliary circuit. When water enters a brake circuit of the electric vehicle due to water entering a brake handle of the electric vehicle, the power-off switch is conductive and the auxiliary circuit forms a closed circuit, the emergency switch is turned on, so that the auxiliary circuit forms the functions of circuit breaking and brake power-off relieving, and meanwhile, the brake device is loosened due to long-time use and is not in contact with the power-off switch; and the emergency switch is arranged, so that the problems of brake auxiliary circuit faults, circuit damage and brake device looseness caused by rain and water entering are temporarily solved, and the reliability of the vehicle is greatly improved.

Description

Technical Field

[0001] The present application relates to a brake assist circuit, and more particularly to an electric vehicle, a brake assist circuit and a brake assist system thereof. Background Art

[0002] The brake power-off auxiliary function is that when the electric vehicle is driving, the brake is squeezed to close the power-off switch, so that the brake power-off auxiliary circuit forms a path. At this time, no matter how the handle is accelerated, the motor will not run. When it rains or the brake handle fails, the brake power-off auxiliary circuit will be exposed to rain and water, which will cause the brake power-off function to fail, causing the motor to be unable to rotate and the vehicle to be unable to drive. Therefore, an electric vehicle, a brake auxiliary circuit and a brake auxiliary system are proposed to solve the above problems. Utility Model Content

[0003] The embodiment of the present application provides an electric vehicle, a brake assist circuit and a brake assist system thereof to solve the problems existing in the related technologies. The technical solutions are as follows:

[0004] In a first aspect, an embodiment of the present application provides an electric vehicle brake assist circuit, comprising:

[0005] A power-off switch is connected to the auxiliary circuit. When the electric vehicle is running normally, the power-off switch is opened and the auxiliary circuit is disconnected. When the electric vehicle brakes or the power-off switch fails, the power-off switch is closed and the auxiliary circuit is connected.

[0006] Emergency switch, the emergency switch is connected to the auxiliary circuit, the emergency switch is connected in series with the power-off switch, when the electric vehicle is running normally, the emergency switch is closed, when the power-off switch is closed due to a fault, the emergency switch is opened, when the emergency switch and the power-off switch are both closed, the auxiliary circuit is open;

[0007] The controller is connected to the auxiliary circuit. When the auxiliary circuit is connected, the controller controls the electric vehicle to cut off power.

[0008] In one embodiment, it further includes:

[0009] Voltage converter: The voltage converter is connected to the auxiliary circuit and is located between the emergency switch and the controller.

[0010] In one embodiment, it further includes:

[0011] Warning light: The warning light is connected to the auxiliary circuit. The warning light is connected in series with the emergency switch and the power-off switch. When the emergency switch and the power-off switch are both closed, the warning light lights up.

[0012] In one embodiment, it further includes:

[0013] Power supply, the power supply is connected to the auxiliary circuit.

[0014] In one embodiment,

[0015] The power disconnect switch includes:

[0016] A first switch, the first switch is connected to the auxiliary circuit;

[0017] The second switch is connected to the auxiliary circuit, and the first switch is connected in parallel with the second switch.

[0018] In a second aspect, an embodiment of the present application provides a brake assist system, including:

[0019] An electric vehicle brake assist circuit as described in any one of the above embodiments; and

[0020] Electric vehicle handlebar, the electric vehicle handlebar is installed on the electric vehicle, the power cut-off switch is installed on the electric vehicle handlebar, and the emergency switch is installed on the electric vehicle handlebar;

[0021] The brake device is installed on the handlebar of the electric vehicle. The brake device is connected to the brake circuit of the electric vehicle. The brake device is in contact with the power-off switch. When the brake device brakes, the brake device is not in contact with the power-off switch, and the power-off switch is closed to form a passage for the auxiliary circuit.

[0022] In one embodiment,

[0023] The brake system includes:

[0024] The brake handle is installed on the handlebar of the electric vehicle. The brake handle is connected to the brake pad through the brake line. The brake handle is in contact with the power-off switch. When the brake handle is braked, the brake handle is not in contact with the power-off switch, and the power-off switch is closed to form a passage for the auxiliary circuit.

[0025] In one embodiment,

[0026] The power-off switch is a contact switch.

[0027] In one embodiment,

[0028] The emergency switch is a toggle switch.

[0029] In a third aspect, an embodiment of the present application provides an electric vehicle, comprising a brake assist circuit as described in any one of the above embodiments or a brake assist system as described in any one of the above embodiments.

[0030] The advantages or beneficial effects of the above technical solution include at least:

[0031] When water enters the brake handle of an electric vehicle and causes water to enter the brake circuit of the electric vehicle, the power-off switch becomes conductive, allowing the auxiliary circuit to form a path. The emergency switch is turned on to break the auxiliary circuit, thereby releasing the electric vehicle's brake power-off function. After the water that has entered the handle evaporates, the power-off switch is restored, and the emergency switch is closed to restore the brake power-off function. By setting the emergency switch, the brake auxiliary circuit failure and circuit damage caused by rain and water ingress can be temporarily solved, greatly improving vehicle reliability.

[0032] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0034] Figure 1 is a structural schematic diagram of the auxiliary circuit;

[0035] Figure 2 It is a structural diagram of the auxiliary system;

[0036] In the figure: 100, auxiliary circuit;

[0037] 110, power off switch; 111, first switch; 112, second switch;

[0038] 120. Emergency switch;

[0039] 130. Controller;

[0040] 140. Voltage converter;

[0041] 150. Warning light;

[0042] 160. Power supply;

[0043] 200. Auxiliary system;

[0044] 210. Handlebars of electric vehicles;

[0045] 220. Braking device; 221. Brake handle. DETAILED DESCRIPTION

[0046] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0047] Figure 1-Figure 2 FIG. 1 shows a structural diagram of an electric vehicle brake assist circuit 100 according to an embodiment of the present application. Figure 1-Figure 2 As shown, the auxiliary circuit 100 may include:

[0048] A power-off switch 110, which is connected to the auxiliary circuit 100. When the electric vehicle is running normally, the power-off switch 110 is opened, and the auxiliary circuit 100 is disconnected. When the electric vehicle brakes or the power-off switch 110 fails, the power-off switch 110 is closed, and the auxiliary circuit 100 is connected;

[0049] The emergency switch 120 is connected to the auxiliary circuit 100. The emergency switch 120 is connected in series with the power-off switch 110. When the electric vehicle is running normally, the emergency switch 120 is closed. When the power-off switch 110 is closed due to a fault, the emergency switch 120 is opened. When both the emergency switch 120 and the power-off switch 110 are closed, the auxiliary circuit 100 is open.

[0050] The controller 130 is connected to the auxiliary circuit 100. When the auxiliary circuit 100 is switched on, the controller 130 controls the electric vehicle to cut off power.

[0051] In this embodiment, when the electric vehicle is running normally, the power-off switch 110 is turned on and the emergency switch 120 is closed. At this time, the auxiliary circuit 100 is disconnected, and the controller 130 supplies the current in the power supply 160 (i.e., the battery) to the electric vehicle circuit to enable the electric vehicle to run normally. When the electric vehicle brakes, the brake device 220 is squeezed at this time, and the electric vehicle circuit is powered off. At this time, no matter how the handlebar of the electric vehicle is turned, the electric vehicle will not move. When the brake device 220 is squeezed, the power-off switch 110 is closed, and the emergency switch 120 is closed, so that the auxiliary circuit 100 forms a passage. At this time, the electric vehicle circuit is powered off, the auxiliary circuit 100 is powered on, and the warning light 150 is lit;

[0052] When the power switch 110 is closed due to water ingress, the auxiliary circuit 100 is connected, and the controller 130 enables the power supply 160 to supply power to the auxiliary circuit 100. At this time, no matter how the handlebar of the electric vehicle is turned, the electric vehicle will not move. At this time, the emergency switch 120 needs to be turned on to disconnect the auxiliary circuit 100 again, so that the current continues to pass through the electric vehicle circuit, so that the electric vehicle can run normally;

[0053] When water enters the brake handle of an electric vehicle, causing water to enter the brake circuit of the electric vehicle, the power-off switch 110 is conductive, so that the auxiliary circuit 100 forms a path, and the emergency switch 120 is turned on to break the auxiliary circuit 100, thereby releasing the electric vehicle's brake power-off function. After the water that has entered the handle evaporates, the power-off switch 110 is restored, and the emergency switch 120 is closed to restore the brake power-off function. By setting the emergency switch 120, the brake auxiliary circuit failure and circuit damage caused by rain and water ingress can be temporarily solved, thereby greatly improving the vehicle's reliability in rainy days.

[0054] like Figure 1 As shown, in one embodiment, it also includes:

[0055] The voltage converter 140 is connected to the auxiliary circuit 100 . The voltage converter 140 is located between the emergency switch 120 and the controller 130 .

[0056] In this embodiment, the voltage converter 140 converts the current in the power source 160 to achieve conversion and adaptation between different voltage levels.

[0057] like Figure 1 As shown, in one embodiment, it also includes:

[0058] The warning light 150 is connected to the auxiliary circuit 100. The warning light 150 is connected in series with the emergency switch 120 and the power-off switch 110. When the emergency switch 120 and the power-off switch 110 are both closed, the warning light 150 lights up.

[0059] In this embodiment, when the emergency switch 120 is closed and the power-off switch 110 is opened, the auxiliary circuit 100 is disconnected and the warning light 150 is always off;

[0060] When the emergency switch 120 is closed and the power-off switch 110 is closed, the auxiliary circuit 100 is open and the warning light 150 is always on;

[0061] When the emergency switch 120 is turned off and the power-off switch 110 is turned on, the auxiliary circuit 100 is disconnected and the warning light 150 is always off.

[0062] like Figure 1 As shown, in one embodiment, it also includes:

[0063] The power supply 160 is connected to the auxiliary circuit 100 .

[0064] In this embodiment, the power source 160 is a common power source 160 (ie, a battery) used in electric vehicles.

[0065] In one embodiment,

[0066] The power off switch 110 comprises:

[0067] A first switch 111, the first switch 111 is connected to the auxiliary circuit 100;

[0068] The second switch 112 is connected to the auxiliary circuit 100 , and the first switch 111 and the second switch 112 are connected in parallel.

[0069] In this embodiment, the first switch 111 is connected in parallel with the second switch 112, and the first switch 111 and the second switch 112 are respectively installed on the left and right handlebars 210 of the electric vehicle. Squeezing any one of the left and right brake handles 221, or squeezing both brake handles 221 at the same time, can make the auxiliary circuit 100 pass, so that the electric vehicle brakes and cuts off the power.

[0070] Figure 2 FIG. 2 shows a structural diagram of a brake assist system 200 according to an embodiment of the present application. Figure 2 As shown, the auxiliary system 200 may include:

[0071] An electric vehicle brake assist circuit 100 as described in any one of the above embodiments; and

[0072] An electric vehicle handlebar 210, the electric vehicle handlebar 210 is mounted on the electric vehicle, the power cut-off switch 110 is mounted on the electric vehicle handlebar 210, and the emergency switch 120 is mounted on the electric vehicle handlebar 210;

[0073] The brake device 220 is installed on the handlebar 210 of the electric vehicle. The brake device 220 is connected to the brake circuit of the electric vehicle. The brake device 220 is in contact with the power-off switch 110. When the brake device 220 brakes, the brake device 220 is not in contact with the power-off switch 110, and the power-off switch 110 is closed to form a passage for the auxiliary circuit 100.

[0074] In this embodiment, the handlebar 210 of the electric vehicle is divided into a left handle and a right handle, the brake device 220 is divided into a left brake device and a right brake device, the first switch 111 and the second switch 112 are respectively installed on the corresponding left handle and the right handle, and during normal driving, the left and right brake devices are respectively in contact with the corresponding first switch 111 and the second switch 112, so that the first switch 111 and the second switch 112 are disconnected, so that the auxiliary circuit 100 is disconnected, so that the electric vehicle motor can be normally controlled;

[0075] When the emergency switch 120 is closed, the left brake device is pressed to close the first switch 111 and open the second switch 112, so that the auxiliary circuit 100 forms a passage and the warning light 150 is always on;

[0076] When the emergency switch 120 is closed, the right brake device is squeezed to close the second switch 112 and open the first switch 111, so that the auxiliary circuit 100 forms a passage and the warning light 150 is always on;

[0077] When the emergency switch 120 is closed, the left and right brake devices are pressed at the same time, so that the second switch 112 and the first switch 111 are closed at the same time, so that the auxiliary circuit 100 forms a passage, and the warning light 150 is always on;

[0078] By connecting the first switch 111 and the second switch 112 in parallel, the left brake device 220 and the right brake device 220 on the left handle and the right handle are distinguished, so as to ensure that when any one of the brake devices 220 or both brake devices 220 are squeezed at the same time, the auxiliary circuit 100 can form a path;

[0079] In addition, when the brake device 220 is used for a long time, it is easy to become loose, resulting in insufficient rebound. When the brake device 220 is loose and causes insufficient rebound, the brake device 220 is not in contact with the power-off switch 110, and the power-off switch 110 is closed, so that the auxiliary circuit 100 forms a passage, causing the electric vehicle to stop running. By opening the emergency switch 120, the auxiliary circuit 100 is disconnected, so that the electric vehicle can run normally.

[0080] like Figure 2 As shown, in one embodiment,

[0081] The brake device 220 comprises:

[0082] The brake handle 221 is installed on the handlebar 210 of the electric vehicle. The brake handle 221 is connected to the brake pad through the brake line. The brake handle 221 is in contact with the power-off switch 110. When the brake handle 221 is braked, the brake handle 221 is not in contact with the power-off switch 110, and the power-off switch 110 is closed to form a passage for the auxiliary circuit 100.

[0083] In this embodiment, the brake pads of the electric vehicle are controlled by the brake handle 221 to brake, and the brake handle 221 controls the closing and opening of the first switch 111 and the second switch 112 in the power-off switch 110, so that the auxiliary circuit 100 forms a path;

[0084] The brake handle 221 is divided into a left brake handle 221 and a right brake handle 221, which correspond to the positions of the first switch 111 and the second switch 112 respectively;

[0085] During normal driving, the brake handle 221 is in contact with the power-off switch 110 . When braking, the brake handle 221 is squeezed to prevent the brake handle 221 from contacting the power-off switch 110 .

[0086] like Figure 2 As shown, in one embodiment,

[0087] The power off switch 110 is a contact switch.

[0088] In this embodiment, the power-off switch 110 is a contact switch. Different from the contact switch structure, when the brake handle 221 contacts the power-off switch 110, the brake handle 221 presses the power-off switch 110, the power-off switch 110 is turned on and the auxiliary circuit 100 is disconnected. When the brake handle 221 is squeezed, the brake handle 221 is not in contact with the power-off switch 110, the power-off switch 110 is closed, and the auxiliary circuit 100 is energized.

[0089] like Figure 2 As shown, in one embodiment,

[0090] The emergency switch 120 is a toggle switch.

[0091] In this embodiment, the emergency switch 120 is a toggle switch, and the emergency switch 120 is located on the handle. When water enters the power off switch 110, the emergency switch 120 is turned on by manually toggling it, thereby disconnecting the auxiliary circuit 100.

[0092] The present application also provides an electric vehicle, including:

[0093] The brake assist circuit 100 as described in any one of the above embodiments or the brake assist system 200 as described in any one of the above embodiments.

[0094] The functions of each module in each device of the embodiment of the present utility model can refer to the corresponding description in the above method, which will not be repeated here.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. 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 different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0097] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electric vehicle brake assist circuit, characterized in that: include: A power-off switch, the power-off switch is connected to the auxiliary circuit. When the electric vehicle is running normally, the power-off switch is opened and the auxiliary circuit is disconnected. When the electric vehicle brakes or the power-off switch fails, the power-off switch is closed and the auxiliary circuit is connected; An emergency switch, the emergency switch is connected to the auxiliary circuit, the emergency switch is connected in series with the power-off switch, when the electric vehicle is running normally, the emergency switch is closed, when the power-off switch is closed due to a fault, the emergency switch is opened, when the emergency switch and the power-off switch are both closed, the auxiliary circuit is open; A controller is connected to the auxiliary circuit, and when the auxiliary circuit is connected, the controller controls the electric vehicle to cut off power.

2. The electric vehicle brake assist circuit according to claim 1, characterized in that: Also includes: A voltage converter is connected to the auxiliary circuit and is located between the emergency switch and the controller.

3. The electric vehicle brake assist circuit according to claim 1, characterized in that: Also includes: A warning light is connected to the auxiliary circuit, the warning light is connected in series with the emergency switch and the power-off switch, and when the emergency switch and the power-off switch are both closed, the warning light lights up.

4. The electric vehicle brake assist circuit according to claim 1, characterized in that: Also includes: A power supply is connected to the auxiliary circuit.

5. The electric vehicle brake assist circuit according to claim 1, characterized in that: The power off switch comprises: a first switch, wherein the first switch is connected to the auxiliary circuit; The second switch is connected to the auxiliary circuit, and the first switch is connected in parallel with the second switch.

6. A brake assist system, characterized in that: include: An electric vehicle brake assist circuit as claimed in any one of claims 1 to 5; as well as An electric vehicle handlebar, wherein the electric vehicle handlebar is mounted on the electric vehicle, the power cut-off switch is mounted on the electric vehicle handlebar, and the emergency switch is mounted on the electric vehicle handlebar; A brake device is installed on the handlebar of the electric vehicle, the brake device is connected to the brake circuit of the electric vehicle, the brake device is in contact with the power-off switch, when the brake device brakes, the brake device is not in contact with the power-off switch, and the power-off switch is closed to form a passage for the auxiliary circuit.

7. A brake assist system according to claim 6, characterized in that: The brake device comprises: A brake handle is installed on the handlebar of the electric vehicle. The brake handle is connected to the brake pad through a brake line. The brake handle is in contact with the power-off switch. When the brake handle is braked, the brake handle is not in contact with the power-off switch, and the power-off switch is closed to form a passage for the auxiliary circuit.

8. A brake assist system according to claim 6, characterized in that: The power-off switch is a contact switch.

9. A brake assist system according to claim 6, characterized in that: The emergency switch is a toggle switch.

10. An electric vehicle, characterized in that: It comprises a brake assist circuit as described in any one of claims 1 to 5 or a brake assist system as described in any one of claims 6 to 9.

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