Temperature sensor

Abstract

The utility model provides a temperature sensor, which is characterized in that the temperature sensor comprises a thermistor plastic coating sleeve, a lining, a lead, a resistor and a copper bar, the thermistor plastic coating sleeve wraps the resistor through a plastic coating process, the copper bar is connected with the resistor plastic coating sleeve, one end of the lead is connected with the resistor, the other end of the lead is connected with a controller, and the lining is sleeved on the lead. The motor rotor is assembled on a motor in an integrated state, the required space is reduced, and the platformization rate and compactness of the motor are improved to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of motor sensors, in particular to a temperature sensor. Background Art

[0002] The temperature sensor in the motor is used to measure the temperature of the motor windings, bearings, lubricating oil, cooling medium and other parts, so as to understand the operating status of the motor and perform necessary protection. The drive motor is one of the most important components in new energy vehicles. With the vigorous development of new energy, the drive motor pursues lightweight and compactness. Based on the above considerations, the size of the drive motor will become smaller and smaller, and conventional temperature sensors will not be able to meet the assembly requirements. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a temperature sensor.

[0004] The technical solutions to the above technical problems are as follows:

[0005] A temperature sensor, characterized in that it includes a thermistor plastic sleeve, a bushing, a wire, a resistor, and a copper busbar, wherein the thermistor plastic sleeve wraps the resistor through a plastic wrapping process, the copper busbar is connected to the resistor plastic sleeve, one end of the wire is connected to the resistor, the other end of the wire is connected to a controller, and the bushing is sleeved on the wire.

[0006] Furthermore, the bushing is made of plastic material or metal material.

[0007] Furthermore, the thermistor plastic sheath is made of thermoplastic material.

[0008] Furthermore, the thermistor plastic sleeve includes a head and a bottom, the axial end of the copper busbar is provided with a through hole, the head of the thermistor plastic sleeve passes through the through hole, and the axial end of the bottom abuts against the axial end of the copper busbar.

[0009] The beneficial effects of the utility model are as follows: the bushing of the utility model is made of plastic or metal material, which can prevent the wire from being worn and broken. After the thermistor plastic-coated sleeve is assembled on the copper busbar, it is riveted and fixed to improve the assembly efficiency and reliability. The temperature sensor is assembled on the motor in an integrated state, which reduces the required space and greatly improves the platform rate and compactness of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional view of the utility model.

[0011] Markings in the accompanying drawings: thermistor plastic sleeve 1, head 1-1, bottom 1-2, bushing 2, wire 3, resistor 4, copper bus 5, through hole 5-1. DETAILED DESCRIPTION

[0012] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0013] like Figure 1 As shown, a temperature sensor includes a thermistor plastic-coated sleeve 1, a bushing 2, a wire 3, a resistor 4, and a copper busbar 5. The thermistor plastic-coated sleeve 1 wraps the resistor 4 through a plastic-coating process, the copper busbar 5 is connected to the resistor plastic-coated sleeve 1, one end of the wire 3 is connected to the resistor 4, the other end of the wire 3 is connected to the controller, and the bushing 2 is sleeved on the wire 3.

[0014] Specifically, the copper bus 5 is in the motor temperature field, and the heat of the motor temperature field is transferred to the thermistor plastic sleeve 1, and the heat of the thermistor plastic sleeve 1 is then transferred to the resistor 4. The resistance value of the resistor 4 changes with the temperature. The heat transfer is achieved by connecting the wire 3 through the temperature minus the resistance value comparison table. The wire 3 is directly connected to the controller (not shown in the drawings), and finally the heat transfer, sensing and monitoring are completed.

[0015] The bushing 2 is made of plastic or metal.

[0016] Specifically, the wire 3 will vibrate when the motor is working, and the bushing 2 is sleeved on the wire 3 to prevent the wire 3 from vibrating. The bushing 2 is made of plastic material to ensure the insulation of the bushing 2 so that the electrical performance is not affected. If the bushing 2 is made of metal material, an insulating coating needs to be applied on the surface of the bushing 2 to ensure the insulation of the bushing 2.

[0017] Specifically, the thermistor plastic cover 1 is made of thermoplastic material (for example, polyethylene, polypropylene, polyvinyl chloride, polystyrene, etc.), and the thermistor plastic cover 1 is manufactured by injection molding process.

[0018] The thermistor plastic-coated sleeve 1 includes a head 1-1 and a bottom 1-2. A through hole 5-1 is provided at the axial end of the copper bar 5. The head 1-1 of the thermistor plastic-coated sleeve 1 passes through the through hole 5-1, so that the thermistor plastic-coated sleeve 1 and the copper bar 5 are riveted, and the axial end of the bottom 1-2 abuts against the axial end of the copper bar 5.

[0019] Finally, it should be noted that the above-described implementation mode is only a preferred embodiment of the utility model to illustrate the technical solution of the utility model, and does not limit it, let alone limit the protection scope of the utility model; although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the protection scope of the claims.

Claims

1. A temperature sensor, characterized in that: The invention comprises a thermistor plastic-coated sleeve (1), a bushing (2), a wire (3), a resistor (4), and a copper busbar (5), wherein the thermistor plastic-coated sleeve (1) wraps the resistor (4) through a plastic-coating process, the copper busbar (5) is connected to the resistor plastic-coated sleeve (1), one end of the wire (3) is connected to the resistor (4), the other end of the wire (3) is connected to a controller, and the bushing (2) is sleeved on the wire (3).

2. A temperature sensor according to claim 1, characterized in that: The bushing (2) is made of plastic material or metal material.

3. A temperature sensor according to claim 1, characterized in that: The thermistor plastic sheath (1) is made of thermoplastic material.

4. A temperature sensor according to claim 1, characterized in that: The thermistor plastic-coated sleeve (1) comprises a head (1-1) and a bottom (1-2); a through hole (5-1) is provided at an axial end of the copper bar (5); the head (1-1) of the thermistor plastic-coated sleeve (1) passes through the through hole (5-1), so that the thermistor plastic-coated sleeve (1) and the copper bar (5) are riveted together, and the axial end of the bottom (1-2) abuts against the axial end of the copper bar (5).

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