Quick-plug temperature sensor applied to monitoring electric vehicle motor

Abstract

The utility model discloses a quick-plug type temperature sensor applied to monitoring an electric vehicle motor, and relates to the technical field of quick-plug type temperature sensors. The utility model discloses a quick-plug temperature sensor applied to monitoring an electric vehicle motor. The quick-plug temperature sensor comprises a metal quick-release buckle; according to the utility model, after the thermistor is connected with the metal quick-release buckle, the metal quick-release buckle is directly inserted into the copper bar of the motor, so that the metal quick-release buckle is connected with the copper bar, the thermistor is further prevented from being damaged during installation, and meanwhile, after the thermistor is connected with the metal quick-release buckle, the thermistor can be tightly attached to the metal quick-release buckle, so that the thermistor is prevented from being damaged. The thermistor is tightly attached to the copper bar, and the metal quick-release buckle is tightly attached to the copper bar, so that the thermistor can more quickly sense the temperature of the motor, the monitoring speed of the temperature of the motor is improved, and the arrangement of the metal quick-release buckle not only can improve the installation efficiency of the thermistor, but also can prevent the thermistor from being damaged during installation; and meanwhile, the monitoring efficiency of the motor temperature can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of quick-insertion temperature sensors, and in particular relates to a quick-insertion temperature sensor used for monitoring a motor of an electric vehicle. Background Art

[0002] An important component of new energy electric vehicles is the electric motor. The hazards of electric vehicle motor overheating are multifaceted;

[0003] First, overheating of the motor will accelerate the aging of the motor components, thus shortening the life of the motor. This is because high temperature environment will cause the performance of the materials inside the motor to deteriorate. For example, the insulation material of the coil may accelerate aging due to high temperature, which will cause motor failure;

[0004] Secondly, if the motor overheats continuously, it is easy to cause damage to the internal parts of the motor, such as bearings, magnetic steel, etc., which may be deformed or damaged due to high temperature, and then cause the whole motor to fail. This will affect the driving performance of the electric vehicle and may even cause the electric vehicle to fail to operate normally;

[0005] In addition, motor overheating may also lead to more serious consequences; for example, the high temperature inside the motor may cause the insulation material to fail, thus causing safety hazards such as short circuit and fire;

[0006] Therefore, in order to ensure the long life of the motor and to give full play to its optimal performance, the temperature of the motor also needs to be continuously monitored. Therefore, it is crucial to monitor the temperature of the stator winding. This is an important means for the motor to fully utilize all its advantages and avoid the risk of overheating.

[0007] The traditional installation method of motor products is to directly bury the winding: if the motor design allows, the temperature sensor can be directly buried inside the motor winding. This can more accurately sense the temperature inside the motor and avoid the influence of heat transfer. The specific operation steps include selecting a suitable location, cleaning the winding surface, drilling holes to bury the sensor, etc. However, this buried winding installation method is prone to damage the head of the temperature sensor. Excessive pressure during the burial process will cause the NTC thermistor to crack, resulting in abnormal resistance of the temperature sensor, or piercing other parts of the sensor, causing the temperature sensor to short-circuit. For this reason, we propose a quick-insert temperature sensor for monitoring electric vehicle motors. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a quick-insert temperature sensor for monitoring electric vehicle motors that can overcome the above problems or at least partially solve the above problems.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a quick-insert temperature sensor used for monitoring electric vehicle motors, comprising: a metal quick-release buckle, the metal quick-release buckle comprising an n-type portion, the n-type portion forming a slot, the metal quick-release buckle is installed on the copper busbar through the slot; the metal quick-release buckle is fixed with a clamping buckle by a clamping buckle, and the thermistor is tightly attached to the metal quick-release buckle; the metal quick-release buckle also includes a first V-shaped bending portion and a second V-shaped bending portion, so that the metal quick-release buckle is clamped on the copper busbar.

[0010] Preferably, extension parts are arranged on both sides of the first side portion on the n-type portion, and the clamping buckles are symmetrically arranged on the extension parts, and the thermistor is closely attached to the close-fitting surface of the first side portion by bending the clamping buckles together.

[0011] Furthermore, the first V-shaped bending portion and the second V-shaped bending portion are respectively arranged on the first side portion and the second side portion of the n-type portion, and the first V-shaped bending portion and the second V-shaped bending portion are both bent toward the slot.

[0012] Furthermore, one end of the first V-shaped bending portion located in the slot is configured as an arc-shaped bending portion, and the first V-shaped bending portion is formed with a first guiding inclined surface.

[0013] Furthermore, one end of the second V-shaped bending portion located in the clamping groove is arranged to directly face the clamping portion, and the second V-shaped bending portion is formed with a second guiding inclined surface.

[0014] Furthermore, the first guide bevel surface and the second guide bevel surface are tapered.

[0015] Furthermore, the length a of the first V-shaped bending portion is greater than the length b of the second V-shaped bending portion.

[0016] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the utility model connects the thermistor to the metal quick-release buckle, and then directly inserts the metal quick-release buckle into the copper busbar of the motor, so that the metal quick-release buckle is connected to the copper busbar, thereby avoiding damage to the thermistor during installation. At the same time, after the thermistor is connected to the metal quick-release buckle, it can be tightly attached to the metal quick-release buckle, and the metal quick-release buckle is tightly attached to the copper busbar. Therefore, the thermistor can sense the temperature of the motor more quickly, thereby improving the speed of monitoring the motor temperature. Therefore, the setting of the metal quick-release buckle can not only improve the installation efficiency of the thermistor, but also avoid damage to the thermistor during installation, and at the same time can also improve the monitoring efficiency of the motor temperature.

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 This is a schematic diagram of the structure of a quick-insert temperature sensor for monitoring electric vehicle motors proposed in the utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of a quick-insert temperature sensor for monitoring electric vehicle motors proposed in the utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure of a clamping buckle and a close-fitting surface of a quick-insert temperature sensor for monitoring electric vehicle motors proposed by the utility model;

[0022] Figure 4 This is a schematic structural diagram of a first V-shaped bending portion of a quick-insert temperature sensor for monitoring electric vehicle motors proposed by the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of a thermistor of a quick-insert temperature sensor for monitoring electric vehicle motors proposed by the utility model;

[0024] Figure 6 The utility model provides a schematic structural diagram of a copper bar of a thermistor of a quick-insert temperature sensor for monitoring an electric vehicle motor.

[0025] In the figure: 1. metal quick-release buckle; 11. n-shaped portion; 12. slot; 13. first side portion; 14. second side portion; 15. close-fitting surface; 151. extension portion; 152. clamping buckle; 16. first V-shaped bending portion; 161. arc-shaped bending portion; 162. first guiding bevel; 17. second V-shaped bending portion; 171. straight clamping portion; 172. second guiding bevel; 2. thermistor; 3. copper busbar. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0027] Example 1: Reference Figure 1-Figure 6A quick-insert temperature sensor for monitoring an electric vehicle motor comprises: a metal quick-release buckle 1, the metal quick-release buckle 1 comprises an n-shaped portion 11, the n-shaped portion 11 forms a card slot 12, the metal quick-release buckle 1 is installed on a copper bus 3 through the card slot 12; the metal quick-release buckle 1 is fixed with a clamping buckle 152 provided thereon to fix a thermistor 2, and the thermistor 2 is closely attached to the metal quick-release buckle 1; the metal quick-release buckle 1 also comprises a first V-shaped bending portion 16 and a second V-shaped bending portion 17, so as to clamp the metal quick-release buckle 1 on the copper bus 3;

[0028] Extensions 151 are provided on both sides of the first side portion 13 of the n-shaped portion 11, and clamping buckles 152 are symmetrically provided on the extensions 151. By bending the clamping buckles 152 together, the thermistor 2 is closely attached to the close contact surface 15 of the first side portion 13;

[0029] The first V-shaped bending portion 16 and the second V-shaped bending portion 17 are respectively disposed on the first side edge portion 13 and the second side edge portion 14 of the n-shaped portion 11, and the first V-shaped bending portion 16 and the second V-shaped bending portion 17 are both bent toward the slot 12;

[0030] One end of the first V-shaped bending portion 16 located in the slot 12 is configured as an arc-shaped bending portion 161, and the first V-shaped bending portion 16 is formed with a first guiding inclined surface 162;

[0031] One end of the second V-shaped bending portion 17 located in the clamping groove 12 is configured to directly face the clamping portion 171 , and the second V-shaped bending portion 17 is formed with a second guiding inclined surface 172 ;

[0032] The first guide slope 162 and the second guide slope 172 are tapered;

[0033] The thermistor 2 is encapsulated with a Teflon filler. The thermistor 2 encapsulated with the Teflon filler is placed in the clamping buckle 152 on the extension portion 151, and the clamping buckle 152 is bent using a tool, thereby connecting the thermistor 2 to the metal quick-release buckle 1. At the same time, the setting of the clamping buckle 152 can make the thermistor 2 and the close contact surface 15 close. After the thermistor 2 and the close contact surface 15 are close, the temperature of the motor can be sensed more quickly, so that the speed of monitoring the motor temperature is improved, and the thermistor 2 can be prevented from being damaged during installation.

[0034] After the thermistor 2 is connected to the metal quick-release buckle 1, the metal quick-release buckle 1 is inserted into the copper bar 3 of the motor, so that the n-shaped portion 11 clamps the copper bar 3; in addition, when the metal quick-release buckle 1 is clamped on the copper bar 3, the first V-shaped bending portion 16 and the second V-shaped bending portion 17 further clamp the copper bar 3, thereby improving the firmness of the connection between the metal quick-release buckle 1 and the copper bar 3;

[0035] A notch groove is provided on the copper busbar 3. When the metal quick-release buckle 1 is inserted into the copper busbar 3, since the arc-shaped bend 161 and the straight clamping portion 171 are at the same horizontal plane, the arc-shaped bend 161 and the straight clamping portion 171 will enter into the notch groove of the copper busbar 3, so that the arc-shaped bend 161 and the straight clamping portion 171 are against the bottom surface of the notch groove, effectively preventing the metal quick-release buckle 1 from being pulled off the copper busbar 3 by external force;

[0036] The first guide bevel 162 and the second guide bevel 172 are arranged in a conical shape, which can facilitate the metal quick-release buckle 1 to be inserted into the copper busbar 3 .

[0037] Embodiment 2:

[0038] Reference Figure 1-Figure 6 , a quick-insert temperature sensor for monitoring an electric vehicle motor, which is substantially the same as Embodiment 1, and furthermore: a length a of the first V-shaped bending portion 16 is greater than a length b of the second V-shaped bending portion 17;

[0039] When the length of the first V-shaped bending portion 16 is set longer, the clamping force on the copper busbar 3 can be increased;

[0040] The second V-shaped bending portion 17 is arranged to be shorter than the first V-shaped bending portion 16 , so that the metal quick-release buckle 1 can be easily removed from the copper busbar 3 .

[0041] Therefore, the utility model connects the thermistor 2 to the metal quick-release buckle 1, and then directly inserts the metal quick-release buckle 1 into the copper busbar 3 of the motor, so that the metal quick-release buckle 1 is connected to the copper busbar 3, thereby avoiding damage to the thermistor 2 during installation. At the same time, after the thermistor 2 is connected to the metal quick-release buckle 1, it can be tightly attached to the metal quick-release buckle 1, and the metal quick-release buckle 1 is tightly attached to the copper busbar 3. Therefore, the thermistor 2 can sense the temperature of the motor more quickly, thereby improving the speed of monitoring the motor temperature. Therefore, the setting of the metal quick-release buckle 1 can not only improve the installation efficiency of the thermistor 2, but also avoid damage to the thermistor 2 during installation, and at the same time can also improve the efficiency of monitoring the motor temperature.

[0042] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A quick-insert temperature sensor for monitoring electric vehicle motors, characterized in that: include: A metal quick-release buckle (1), the metal quick-release buckle (1) comprising an n-shaped portion (11), the n-shaped portion (11) being formed with a clamping groove (12), the metal quick-release buckle (1) being mounted on a copper busbar (3) via the clamping groove (12); The thermistor (2) is fixed by a clamping buckle (152) provided on the metal quick-release buckle (1), and the thermistor (2) is closely attached to the metal quick-release buckle (1); The metal quick-release buckle (1) further comprises a first V-shaped bending portion (16) and a second V-shaped bending portion (17), which are used to clamp the metal quick-release buckle (1) onto the copper busbar (3).

2. A quick-insert temperature sensor for monitoring electric vehicle motors according to claim 1, characterized in that: Extension portions (151) are arranged on both sides of the first side portion (13) on the n-type portion (11), and the clamping buckles (152) are symmetrically arranged on the extension portions (151). By bringing the clamping buckles (152) together and bending them, the thermistor (2) is brought into close contact with the close contact surface (15) of the first side portion (13).

3. A quick-insert temperature sensor for monitoring electric vehicle motors according to claim 2, characterized in that: The first V-shaped bending portion (16) and the second V-shaped bending portion (17) are respectively arranged on the first side edge portion (13) and the second side edge portion (14) of the n-type portion (11); the first V-shaped bending portion (16) and the second V-shaped bending portion (17) are both bent towards the slot (12).

4. A quick-insert temperature sensor for monitoring electric vehicle motors according to claim 3, characterized in that: One end of the first V-shaped bending portion (16) located in the clamping groove (12) is arranged as an arc-shaped bending portion (161), and the first V-shaped bending portion (16) is formed with a first guiding inclined surface (162).

5. A quick-insert temperature sensor for monitoring electric vehicle motors according to claim 4, characterized in that: One end of the second V-shaped bending portion (17) located in the clamping groove (12) is arranged as a straight-facing clamping portion (171), and the second V-shaped bending portion (17) is formed with a second guiding inclined surface (172).

6. A quick-insert temperature sensor for monitoring electric vehicle motors according to claim 5, characterized in that: The first guide inclined surface (162) and the second guide inclined surface (172) are tapered.

7. A quick-insert temperature sensor for monitoring electric vehicle motors according to claim 3, characterized in that: The length a of the first V-shaped bending portion (16) is greater than the length b of the second V-shaped bending portion (17).

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