Electric drive bridge voltage monitoring device

Abstract

The utility model relates to the technical field of voltage monitoring, and discloses an electric drive bridge voltage monitoring device, which comprises an electric drive bridge body, a transmission motor arranged on one side of the electric drive bridge body, a protection box fixedly connected to the front side of the transmission motor, and heat dissipation mechanisms arranged on two sides of the protection box. When the temperature control switch detects that the temperature in the protection box is too high, the temperature control switch starts the plurality of heat dissipation fans, and the plurality of heat dissipation fans can rapidly discharge air with heat in the protection box, thereby reducing the temperature in the protection box, and preventing the voltage monitor body from being damaged by electronic components in the protection box due to the too high temperature. And when the temperature in the protection box is lower than a temperature threshold set by the temperature control switch, the temperature control switch turns off the plurality of heat dissipation fans, so that electric energy can be saved, heat generated when the voltage monitor body works can be transmitted to the heat dissipation fins, and the heat dissipation fins can accelerate heat dissipation.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage monitoring, in particular to an electric drive bridge voltage monitoring device. Background Art

[0002] The electric drive axle voltage monitoring device is a device used to monitor the voltage status in the electric drive axle. In electric vehicles, the electric drive axle is usually responsible for converting electrical energy into mechanical energy to drive the vehicle. This device can monitor the voltage of each part of the electric drive axle in real time to ensure its normal operation and prevent equipment damage or safety accidents caused by abnormal voltage.

[0003] According to the Chinese patent authorization announcement number: CN219456312U, a voltage monitoring device is disclosed, which includes a shell, a heat dissipation hole is opened on the shell, a dust screen is arranged on the side of the shell close to the heat dissipation hole, a fixing frame is arranged on the outer side of the dust screen, a fixing groove is opened on the shell for the fixing frame to be inserted and slid, the fixing groove is connected with the heat dissipation hole, and a fixing device for fixing the fixing frame is arranged on the shell. This application has the effect of making the dust-proof effect of the voltage monitoring device better, but the voltage monitoring device still has some problems. Some voltage monitoring devices are equipped with heat dissipation holes to assist the voltage monitoring device in heat dissipation, but when used in some high-temperature environments, the passive heat dissipation effect of the heat dissipation holes is not good. When the voltage monitoring device cannot effectively dissipate heat, some electronic components inside it may be damaged. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an electric drive bridge voltage monitoring device, which solves the problem that the passive heat dissipation effect of the heat dissipation holes is poor. When the voltage monitoring device cannot obtain effective heat dissipation, some electronic components inside it may be damaged.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an electric drive bridge voltage monitoring device, including an electric drive bridge body, a transmission motor is arranged on one side of the electric drive bridge body, a protection box is fixedly connected to the front of the transmission motor, heat dissipation mechanisms are arranged on both sides of the protection box, the heat dissipation mechanisms include a mounting plate, a heat dissipation fan, a dustproof net 1, a dustproof net 2, a connecting plate, heat dissipation fins, a through groove and a temperature control switch, two through grooves are provided on the two side walls of the protection box, two mounting plates are fixedly connected to the two side walls of the protection box, a plurality of heat dissipation fans are fixedly connected between two adjacent mounting plates, the bottom ends of the inner walls of the two through grooves and the top ends of the inner walls are fixedly connected to connecting plates, a plurality of heat dissipation fins are fixedly connected between two adjacent connecting plates, a voltage monitor body is arranged inside the protection box, a connecting line is fixedly connected to the top of the voltage monitor body, and a temperature control switch is fixedly connected to one side of the inner wall of the protection box;

[0006] A shock absorbing mechanism is provided at the bottom of the voltage monitor body, and the shock absorbing mechanism includes a silicone base pad, a support plate, a shock absorbing spring and a limit plate. The top of the silicone base pad is fixedly connected to the support plate, the top of the support plate is fixedly connected to multiple shock absorbing springs, and the tops of the multiple shock absorbing springs are fixedly connected to the limit plate.

[0007] Preferably, a dustproof net is snap-fitted and connected between both ends of two adjacent mounting plates.

[0008] Preferably, two dustproof nets 2 are snap-fitted and connected between two adjacent mounting plates.

[0009] Preferably, the connecting wire passes through the back side of the protection box and is electrically connected to the transmission motor.

[0010] Preferably, the temperature control switch is electrically connected to a plurality of cooling fans.

[0011] Preferably, a box cover is snap-fittedly connected to the front side of the protective box.

[0012] Preferably, the bottom end of the silicone base pad is fixedly connected to the inner wall of the bottom end of the protective box.

[0013] Preferably, the bottom end of the voltage monitor body is fixedly connected to the top end of the limiting plate.

[0014] Beneficial Effects

[0015] The utility model provides an electric drive bridge voltage monitoring device. Compared with the prior art, it has the following features:

[0016] Beneficial effects:

[0017] 1. In the utility model, through the heat dissipation mechanism, when the temperature control switch detects that the temperature inside the protection box is too high, the temperature control switch starts multiple cooling fans, and the multiple cooling fans can quickly discharge the hot air inside the protection box, thereby reducing the temperature inside the protection box, avoiding the voltage monitor body from being damaged due to its excessive temperature and causing the internal electronic components to be damaged, thereby affecting the accuracy of its monitored voltage; when the temperature inside the protection box is lower than the temperature threshold set by the temperature control switch, the temperature control switch turns off the multiple cooling fans, which can save electric energy; the heat generated by the voltage monitor body during operation will be transferred to the cooling fins, and the cooling fins can accelerate the dissipation of heat.

[0018] 2. In the utility model, through the shock-absorbing mechanism, the vehicle may encounter resonance at a certain speed, resulting in increased vibration. When the vibration is transmitted to the protective box, the silicone base pad will first reduce some vibrations, and multiple shock-absorbing springs will offset most of the vibrations, so that the voltage monitor body can better adapt to the complex and changing environment, ensure its stable operation, and protect the sensors inside the voltage monitor body from damage, thereby extending the service life of the voltage monitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an electric drive bridge voltage monitoring device proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the structure inside a protective box of an electric drive bridge voltage monitoring device proposed by the utility model;

[0021] Figure 3 This is a structural cross-sectional view of a protection box portion of an electric drive bridge voltage monitoring device proposed by the utility model;

[0022] Figure 4 The utility model provides an electric drive bridge voltage monitoring device Figure 3 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Electric drive axle body; 2. Transmission motor; 3. Box cover; 4. Protection box; 5. Heat dissipation mechanism; 501. Mounting plate; 502. Cooling fan; 503. Dustproof net 1; 504. Dustproof net 2; 505. Connecting plate; 506. Cooling fins; 507. Through slot; 508. Temperature control switch; 6. Voltage monitor body; 7. Connecting wire; 8. Shock-absorbing mechanism; 801. Silicone base pad; 802. Support plate; 803. Shock-absorbing spring; 804. Limit plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 - Figure 4 The utility model provides two technical solutions, which specifically include the following embodiments:

[0027] Embodiment 1:

[0028] A voltage monitoring device for an electric drive bridge comprises an electric drive bridge body 1, a transmission motor 2 is arranged on one side of the electric drive bridge body 1, a protection box 4 is fixedly connected to the front of the transmission motor 2, and heat dissipation mechanisms 5 are arranged on both sides of the protection box 4. The heat dissipation mechanism 5 comprises a mounting plate 501, a heat dissipation fan 502, a dustproof net 1 503, a dustproof net 2 504, a connecting plate 505, a heat dissipation fin 506, a through slot 507 and a temperature control switch 508. Two through slots 507 are provided on the two side walls of the protection box 4, and two mounting plates 501 are fixedly connected to the two side walls of the protection box 4. There is a heat dissipation mechanism 5 between two adjacent mounting plates 501. A plurality of cooling fans 502 are fixedly connected, the bottom end and the top end of the inner wall of the two through slots 507 are fixedly connected with a connecting plate 505, and a plurality of cooling fins 506 are fixedly connected between two adjacent connecting plates 505. The cooling fins 506 can be used for passive heat dissipation. The cooling fins 506 are made of copper plates and have good thermal conductivity. A voltage monitor body 6 is arranged inside the protective box 4, and a connecting line 7 is fixedly connected to the top of the voltage monitor body 6. A temperature control switch 508 is fixedly connected to one side of the inner wall of the protective box 4. The specific model of the temperature control switch 508 is Honeywell. RT9000, the temperature threshold set by the temperature control switch 508 is 45 degrees. When the temperature inside the protective box 4 exceeds 45 degrees, the temperature control switch 508 starts multiple cooling fans 502, which can quickly reduce the temperature inside the protective box 4. Dustproof net 1 503 is snap-connected between the two ends of the two adjacent mounting plates 501, and two dustproof nets 2 504 are snap-connected between the two adjacent mounting plates 501. The connecting line 7 runs through the back of the protective box 4 and is electrically connected to the transmission motor 2. The temperature control switch 508 is electrically connected to the multiple cooling fans 502, and the front of the protective box 4 is snap-connected with the box cover 3. It should be noted that the voltage monitor body 6 can monitor the voltage of the transmission motor 2 through the connecting line 7, and the above-mentioned working process of related voltage monitoring refers to the prior art.

[0029] During operation, when the temperature control switch 508 detects that the temperature inside the protection box 4 is too high, the temperature control switch 508 starts multiple cooling fans 502. The multiple cooling fans 502 can quickly discharge the hot air inside the protection box 4, thereby reducing the temperature inside the protection box 4 and preventing the voltage monitor body 6 from being damaged due to its excessively high temperature, thereby affecting the accuracy of its monitored voltage. When the temperature inside the protection box 4 is lower than the temperature threshold set by the temperature control switch 508, the temperature control switch 508 turns off the multiple cooling fans 502, which can save electricity. The heat generated by the voltage monitor body 6 during operation will be transferred to the cooling fins 506, and the cooling fins 506 can accelerate the dissipation of heat.

[0030] Embodiment 2:

[0031] On the basis of Example 1, a shock absorbing mechanism 8 is provided at the bottom of the voltage monitor body 6, and the shock absorbing mechanism 8 includes a silicone base pad 801, a support plate 802, a shock absorbing spring 803 and a limit plate 804. The top of the silicone base pad 801 is fixedly connected to the support plate 802, and the top of the support plate 802 is fixedly connected to multiple shock absorbing springs 803, and the tops of the multiple shock absorbing springs 803 are fixedly connected to the limit plate 804. The bottom end of the silicone base pad 801 is fixedly connected to the inner wall of the bottom end of the protective box 4. The silicone base pad 801 is made of silicone and has a certain energy absorption effect. When vibration is transmitted to the silicone base pad 801, the silicone base pad 801 can absorb part of the vibration, and the bottom end of the voltage monitor body 6 is fixedly connected to the top of the limit plate 804.

[0032] At a certain speed, the vehicle may encounter resonance, resulting in increased vibration. When the vibration is transmitted to the protective box 4, the silicone base pad 801 will first reduce some vibration, and the multiple shock-absorbing springs 803 will offset most of the vibration, allowing the voltage monitor body 6 to better adapt to complex and changing environments, ensuring its stable operation, and protecting the sensors inside the voltage monitor body 6 from damage, thereby extending the service life of the voltage monitor body 6.

[0033] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.

Claims

1. An electric drive bridge voltage monitoring device, comprising an electric drive bridge body (1), characterized in that: A transmission motor (2) is arranged on one side of the electric drive bridge body (1), a protection box (4) is fixedly connected to the front of the transmission motor (2), heat dissipation mechanisms (5) are arranged on both sides of the protection box (4), and the heat dissipation mechanisms (5) include a mounting plate (501), a heat dissipation fan (502), a first dustproof net (503), a second dustproof net (504), a connecting plate (505), heat dissipation fins (506), a through slot (507) and a temperature control switch (508), two side walls of the protection box (4) are provided with two through slots (507), and both side walls of the protection box (4) are fixedly connected There are two mounting plates (501), a plurality of cooling fans (502) are fixedly connected between two adjacent mounting plates (501), a connecting plate (505) is fixedly connected to the bottom end and the top end of the inner wall of the two through slots (507), a plurality of cooling fins (506) are fixedly connected between two adjacent connecting plates (505), a voltage monitor body (6) is provided inside the protection box (4), a connecting line (7) is fixedly connected to the top end of the voltage monitor body (6), and a temperature control switch (508) is fixedly connected to one side of the inner wall of the protection box (4); A shock absorbing mechanism (8) is provided at the bottom of the voltage monitor body (6), and the shock absorbing mechanism (8) comprises a silicone base pad (801), a support plate (802), a shock absorbing spring (803) and a limit plate (804), the top end of the silicone base pad (801) is fixedly connected to the support plate (802), the top end of the support plate (802) is fixedly connected to a plurality of shock absorbing springs (803), and the top ends of the plurality of shock absorbing springs (803) are fixedly connected to the limit plate (804).

2. The electric drive bridge voltage monitoring device according to claim 1, characterized in that: Dustproof net 1 (503) is snap-fitted and connected between the two ends of the two adjacent mounting plates (501).

3. The electric drive bridge voltage monitoring device according to claim 1, characterized in that: Two adjacent mounting plates (501) are snap-fitted and connected with two second dustproof nets (504).

4. The electric drive bridge voltage monitoring device according to claim 1, characterized in that: The connecting wire (7) passes through the back of the protection box (4) and is electrically connected to the transmission motor (2).

5. The electric drive bridge voltage monitoring device according to claim 1, characterized in that: The temperature control switch (508) is electrically connected to a plurality of cooling fans (502).

6. The electric drive bridge voltage monitoring device according to claim 1, characterized in that: The front side of the protection box (4) is snap-connected with a box cover (3).

7. The electric drive bridge voltage monitoring device according to claim 1, characterized in that: The bottom end of the silica gel base pad (801) is fixedly connected to the inner wall of the bottom end of the protection box (4).

8. The electric drive bridge voltage monitoring device according to claim 1, characterized in that: The bottom end of the voltage monitor body (6) is fixedly connected to the top end of the limiting plate (804).

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