Temperature sensor applied to monitoring electric vehicle motor

Abstract

The utility model discloses a temperature sensor applied to monitoring an electric automobile motor, and belongs to the field of electric automobile sensors. A temperature sensor for monitoring a motor of an electric vehicle comprises a shell and further comprises a fixing piece fixedly connected with the shell, and a containing groove is formed in the fixing piece; the head of the sensor body is arranged in the placement groove; the L-shaped limiting plate is fixedly arranged on the fixing piece, and a filling plate is arranged between the L-shaped limiting plate and the fixing piece; the copper bar wraps the outer wall of the fixing piece, the copper bar is tightly attached to the L-shaped limiting plate, and the copper bar and the fixing piece are fixed through insulating paint; according to the utility model, the copper bar is tightly attached to the L-shaped limiting plate and is fixed through the insulating paint, so that the temperature change of the surface of the motor can be quickly sensed and converted into an electric signal to be output, and the accuracy and quick response of temperature measurement can be ensured; and rapid installation can be realized on the premise that the temperature sensor is not damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile sensor technical field especially, it relates to a temperature sensor for monitoring electric automobile motor. BACKGROUND

[0002] An important element of new energy electric vehicle is electric motor, and the harm of electric vehicle motor overheating is multifaceted;First, motor overheating can accelerate the aging of motor components, thereby shortening the service life of motor, because high temperature environment can lead to the performance degradation of materials inside motor, such as the insulation material of coil can accelerate aging due to high temperature, and then cause motor failure.

[0003] Secondly, if motor overheating persists, it is easy to cause damage to internal components of motor, such as bearings, magnetic steel, etc.

[0004] In addition, motor overheating can also cause more serious consequences, for example, high temperature inside motor can cause insulation material failure, thereby causing short circuit, fire and other safety hazards.

[0005] Therefore, in order to ensure the long service life of motor and exert its best performance, the temperature of motor also needs to be monitored continuously, so monitoring the temperature of stator winding is crucial, which is an important means for motor to fully utilize all advantages and avoid overheating risk.

[0006] In the prior art, the motor product installation method generally adopts direct embedding in winding, and the method of binding and then pouring paint, which may damage the core temperature sensing components of temperature sensor in the process, thereby causing motor overheating and causing the above-mentioned harm, therefore, the utility model is proposed. CONTENT OF THE UTILITY MODEL

[0007] The utility model relates to a temperature sensor for monitoring electric automobile motor.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A temperature sensor for monitoring electric automobile motor, comprising a shell, further comprising:

[0010] A fixing part fixedly connected with the shell is provided with a placing groove in the fixing part;

[0011] A sensor body, the head of the sensor body is arranged in the placing groove;

[0012] The L-shaped limiting plate is fixedly arranged on the fixing member, and a filling plate is arranged between the L-shaped limiting plate and the fixing member.

[0013] The copper bar is wrapped on the outer wall of the fixing member, the copper bar is tightly attached to the L-shaped limiting plate, and the copper bar and the fixing member are fixed through the insulating paint.

[0014] Preferably, the shell is internally provided with a cavity, the placing groove is in communication with the cavity, and the bottom of the cavity is provided with a baffle.

[0015] Further, the sensor body comprises a thermistor, a connecting wire, a connecting pin and an electric wire, the thermistor is arranged at the head of the sensor body, one end of the connecting wire is connected with the thermistor, the other end of the connecting wire is connected with the connecting pin, and the connecting wire is connected with the electric wire through the connecting pin.

[0016] Further, the thermistor is encapsulated in the placing groove through glass, and the electric wire is arranged in the cavity.

[0017] Further, the shell is provided with an outlet, and the end of the electric wire, which is away from the connecting pin, passes out from the outlet.

[0018] Preferably, the fixing member and the shell are integrally formed, and the filling plate and the fixing member are integrally formed.

[0019] Preferably, the copper bar is provided with a groove.

[0020] Compared with the prior art, the temperature sensor applied to the monitoring of the motor of an electric vehicle has the following beneficial effects:

[0021] 1. The temperature sensor applied to the monitoring of the motor of an electric vehicle ensures the close contact of the temperature sensor with the surface of the measured motor, thereby accurately measuring the temperature of the motor, the copper bar is tightly attached to the L-shaped limiting plate and is fixed through the insulating paint, the temperature change on the surface of the motor can be rapidly sensed and converted into an electric signal output, the accuracy and the rapid response of temperature measurement can be ensured, and the temperature sensor can be rapidly installed without damage.

[0022] 2. The temperature sensor applied to the monitoring of the motor of an electric vehicle has the following beneficial effects:

[0023] 3、The temperature sensor applied to monitoring electric automobile motor, the thermistor is packaged through glass, and it is connected with the electric wire through resistance welding, reduces the cross connection between the welding points and causes the product short circuit, the shell is made of high temperature resistant material, can protect the thermistor, has very strong waterproofness, anti mechanical vibration, anti mechanical pressure when it is sealed in epoxy. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A structure schematic view of the temperature sensor applied to monitoring electric automobile motor is provided for the utility model;

[0025] Figure 2 A structure schematic view of the bottom of the temperature sensor applied to monitoring electric automobile motor is provided for the utility model;

[0026] Figure 3 A structure schematic view of the temperature sensor applied to monitoring electric automobile motor without baffle is provided for the utility model;

[0027] Figure 4 A side view schematic view of the temperature sensor applied to monitoring electric automobile motor is provided for the utility model;

[0028] Figure 5 A structure schematic view of the placing groove of the temperature sensor applied to monitoring electric automobile motor is provided for the utility model;

[0029] Figure 6 A structure schematic view of the temperature sensor applied to monitoring electric automobile motor without copper bar is provided for the utility model;

[0030] Figure 7 A structure schematic view of the sensor body of the temperature sensor applied to monitoring electric automobile motor is provided for the utility model.

[0031] In the drawing: 1, shell;101, fixed part;102, L type limiting plate;103, filling plate;104, cavity;105, placing groove;106, outlet;107, baffle;2, copper bar;201, recess;3, thermistor;301, connecting wire;302, connecting pin;303, electric wire. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0033] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0034] Embodiment one: refer to Figures 1-7 A temperature sensor applied to monitoring the motor of an electric vehicle, comprising a shell 1, further comprising a fixing part 101 and a sensor body fixedly connected with the shell 1, a placing groove 105 is arranged in the fixing part 101, and the head of the sensor body is arranged in the placing groove 105; an L-shaped limiting plate 102 is fixedly arranged on the fixing part 101, and a filling plate 103 is arranged between the L-shaped limiting plate 102 and the fixing part 101; a copper bar 2 is wrapped on the outer wall of the fixing part 101, the copper bar 2 is closely attached to the L-shaped limiting plate 102, and the copper bar 2 and the fixing part 101 are fixed through insulating paint.

[0035] In the embodiment, when in use, the copper bar 2 is inserted into the fixing part 101, so that the copper bar 2 closely wraps the fixing part 101, and the sensor body is arranged inside the fixing part 101, so that the sensor body is inserted between the copper bars 2, and the front and back surfaces are attached to the copper bars 2, which can better and faster perceive the temperature, after the copper bar 2 is installed in place, it is closely attached to the L-shaped limiting plate 102 to realize positioning, which can better fix the head of the sensor body in the middle of the copper bar 2, faster and more accurately perceive the temperature, and the copper bar 2 and the fixing part 101 are fixed through insulating paint, the insulating paint can form an insulating layer between the copper bar 2 and the fixing part 101, prevent accidental conduction of current, avoid short circuit risk, the insulating paint has certain adhesive strength after solidification, can firmly fix the fixing part 101 on the copper bar 2, can realize continuous and accurate temperature perception, maintain stable operation of the temperature monitoring system, and also can achieve the effects of waterproof and corrosion resistance, and in the application, the shell 1 and the fixing part 101 are made of materials with good heat conduction performance, to ensure the accuracy and fast response of temperature measurement, and can be quickly installed without damaging the temperature sensor.

[0036] Embodiment two: refer to Figures 1-7The utility model relates to a temperature sensor applied to monitoring electric automobile motor, including shell 1, still including fixed part 101 and sensor body with shell 1 fixed connection, be equipped with the placement groove 105 in fixed part 101, and the head of sensor body is arranged in the placement groove 105, be fixedly arranged with L type limit board 102 on fixed part 101, and be equipped with filler plate 103 between L type limit board 102 and fixed part 101, the outer wall of fixed part 101 is wrapped with copper bar 2, copper bar 2 is closely combined with L type limit board 102, and copper bar 2 is fixed with fixed part 101 through insulating paint.

[0037] Cavity 104 is equipped in shell 1, and the placement groove 105 is communicated with the cavity 104, and the bottom of the cavity 104 is provided with a baffle 107, and the cavity 104 and the placement groove 105 are arranged to facilitate the placement of the sensor body, and the baffle 107 can support the sensor body.

[0038] The sensor body includes a thermistor 3, a connecting wire 301, a connecting pin 302, and a wire 303. The thermistor 3 is arranged at the head of the sensor body. One end of the connecting wire 301 is connected to the thermistor 3. The other end of the connecting wire 301 is connected to the connecting pin 302. The connecting wire 301 is connected to the wire 303 through the connecting pin 302.

[0039] The thermistor 3 is encapsulated in the placement groove 105 by glass. The wire 303 is placed in the cavity 104.

[0040] In this embodiment, the thermistor 3 is encapsulated by glass, and it is connected to the wire 303 by resistance welding, reducing the cross-connection between welding points and causing product short circuit. The shell 1 is made of high-temperature-resistant material, which can protect the thermistor 3. When it is sealed in epoxy, it has strong waterproofness, mechanical vibration resistance, and mechanical pressure resistance.

[0041] The shell 1 is provided with an outlet 106. One end of the wire 303 away from the connecting pin 302 is pulled out from the outlet 106, which can facilitate the wire 303 to be pulled out, thereby facilitating connection and use.

[0042] The fixed part 101 and the shell 1 are integrally formed. The filler plate 103 and the fixed part 101 are integrally formed. Through the integrally formed setting, the connection gap between the components can be eliminated, the structural strength is higher, and the vibration and impact resistance is stronger.

[0043] The copper bar 2 is provided with a groove 201. Through the setting of the groove 201, on the one hand, the copper bar 2 can be deformed to a certain extent when it is installed, achieving better installation. On the other hand, the heat transfer and temperature sensing effect of the copper bar 2 can be optimized, facilitating assembly and maintenance.

[0044] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A temperature sensor applied to monitor an electric motor of an electric vehicle, comprising a housing (1), characterized in that, Also include: The fixed part (101) is fixedly connected with the shell (1), and a placing groove (105) is arranged in the fixed part (101); The sensor body is arranged in the placing groove (105); The L-shaped limiting plate (102) is fixedly arranged on the fixed part (101), and a filling plate (103) is arranged between the L-shaped limiting plate (102) and the fixed part (101); The copper bar (2) is wrapped on the outer wall of the fixed part (101), the copper bar (2) is closely attached to the L-shaped limiting plate (102), and the copper bar (2) and the fixed part (101) are fixed by insulating paint.

2. The temperature sensor for monitoring an electric motor of an electric vehicle according to claim 1, wherein The shell (1) is provided with a cavity (104), the placing groove (105) is communicated with the cavity (104), and the bottom of the cavity (104) is provided with a baffle (107).

3. The temperature sensor for monitoring an electric motor of an electric vehicle according to claim 2, wherein The sensor body includes a thermistor (3), a connecting wire (301), a connecting pin (302) and an electric wire (303), the thermistor (3) is arranged at the head of the sensor body, one end of the connecting wire (301) is connected with the thermistor (3), the other end of the connecting wire (301) is connected with the connecting pin (302), and the connecting wire (301) is connected with the electric wire (303) through the connecting pin (302).

4. The temperature sensor for monitoring an electric motor of an electric vehicle according to claim 3, wherein The thermistor (3) is packaged in the placing groove (105) by glass, and the electric wire (303) is arranged in the cavity (104).

5. The temperature sensor for monitoring an electric motor of an electric vehicle according to claim 4, wherein The shell (1) is provided with an outlet (106), and one end of the electric wire (303) away from the connecting pin (302) passes out from the outlet (106).

6. The temperature sensor for monitoring an electric motor of an electric vehicle according to claim 1, wherein The fixed part (101) and the shell (1) are integrally formed, and the filling plate (103) and the fixed part (101) are integrally formed.

7. The temperature sensor for monitoring an electric motor of an electric vehicle according to claim 1, wherein The copper bar (2) is provided with a groove (201).

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