Surface-mounted battery pack NTC temperature sensor

Abstract

The utility model provides a surface-mounted battery pack NTC (Negative Temperature Coefficient) temperature sensor, which comprises a PPS (Polyphenylene Sulfide) shell made of high-performance thermoplastic resin; and the detection assembly comprises an NTC (Negative Temperature Coefficient) thermistor, and the NTC thermistor is fixedly connected to the bottom of the PPS shell. The utility model relates to a surface-mounted battery pack NTC (Negative Temperature Coefficient) temperature sensor, which records that when the surface-mounted battery pack NTC temperature sensor is used, an NTC thermistor is packaged and manufactured into the temperature sensor through a specific process, the resistance value of the NTC thermistor is rapidly reduced along with the rise of the temperature and is increased along with the reduction of the temperature by utilizing the thermosensitive effect of the NTC thermistor; the NTC thermistor can determine the corresponding temperature by measuring the resistance value of the NTC thermistor, so that the purpose of detecting and controlling the temperature is achieved, efficient and safe operation of a battery system can be effectively guaranteed through battery pack temperature control, elements can be buffered and protected through the single-component room temperature vulcanized silicone rubber, the head of the NTC thermistor can be flexibly contracted through the structure, and the service life of the NTC thermistor is prolonged. And the temperature can be quickly measured by better fitting the surface of the battery.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature sensors, and in particular relates to a surface-mounted battery pack NTC temperature sensor. Background Art

[0002] The battery pack is an important component of electric vehicles and has very broad development prospects.

[0003] Lithium batteries are widely used in electronic products, and their safety is particularly important. The life and safety of lithium batteries are determined by their materials. They cannot be overcharged, over-discharged, over-currented, or charged and discharged at high temperatures. The national standard GB / T 31241 is a safety requirement for lithium-ion batteries and battery packs used in portable electronic products. Lithium batteries are frequently charged and discharged during use. In order to better protect the battery, a chip NTC thermistor is added to the lithium-ion battery protection board to sense the internal temperature of the battery and monitor the temperature. During the battery charging and discharging process, the lithium battery protection board determines the battery temperature based on its resistance value, and then makes corresponding controls, such as stopping charging, trickling or stopping battery discharge when the battery board temperature is too high. The existing temperature measurement speed is slow and the stability is poor during use. Utility Model Content

[0004] The technical content of the utility model is to provide a surface-mounted battery pack NTC temperature sensor.

[0005] In order to solve the above problems, the utility model provides a surface-mounted battery pack NTC temperature sensor, including: a PPS shell, which is a high-performance thermoplastic resin; a detection component, which includes an NTC thermistor, and the NTC thermistor is fixedly connected to the bottom of the PPS shell. When in use, the NTC thermistor is packaged through a specific process to make a temperature sensor. By utilizing the thermal effect of the NTC thermistor, the resistance value decreases rapidly as the temperature rises and increases as the temperature decreases. By utilizing this characteristic, the NTC thermistor can determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of detecting and controlling the temperature. The battery pack temperature control can effectively ensure the efficient and safe operation of the battery system.

[0006] As a further solution of the utility model, the NTC thermistor exposes a portion of the bottom of the PPS shell, and the remaining portion is encapsulated in the PPS shell with a single-component room temperature vulcanized silicone rubber. The single-component room temperature vulcanized silicone rubber can provide buffering protection for the component. This structure enables the head of the NTC thermistor to shrink flexibly and better fit the battery surface, thereby enabling high-sensitivity and rapid temperature measurement.

[0007] As a further solution of the present invention, a PPS upper cover is provided on the top of the PPS housing, and the PPS upper cover can close the top of the PPS housing.

[0008] As a further solution of the present invention, two electric wires are fixedly connected to the outside of the PPS housing, and the electric wires can connect the entire device to the circuit for operation.

[0009] As a further solution of the utility model, the surface of the NTC thermistor is wrapped with a polyimide film tape, and the polyimide film tape can provide high temperature protection for the NTC thermistor, thereby ensuring the safe use of the sensor under high temperature conditions.

[0010] As a further solution of the present invention, the PPS shell is small in size and can be designed to match the battery pack. After the sensor is installed on the battery pack fixing bracket, the bracket sensor can be attached to the battery by simply buckling it off, thereby achieving convenient installation.

[0011] As a further solution of the present invention, a single-ended element is arranged inside the PPS housing, and the single-ended element can ensure the stability and high sensitivity of the sensor.

[0012] In summary, the utility model includes at least the following beneficial technical effects:

[0013] First, the utility model records that when in use, the NTC thermistor is packaged through a specific process to form a temperature sensor. By utilizing the thermal effect of the NTC thermistor, the resistance value decreases rapidly as the temperature rises and increases as the temperature decreases. By utilizing this characteristic, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of detecting and controlling the temperature. Battery pack temperature control can effectively ensure the efficient and safe operation of the battery system.

[0014] Second, the utility model records a surface-mounted battery pack NTC temperature sensor, which records that the component can be buffered and protected by a single-component room temperature vulcanized silicone rubber. This structure enables the head of the NTC thermistor to shrink flexibly and better fit the battery surface, and can measure temperature with high sensitivity and speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the external structure of the surface-mounted battery pack NTC temperature sensor of the utility model;

[0017] Figure 2 This is a left-side structural schematic diagram of the surface-mounted battery pack NTC temperature sensor of the utility model;

[0018] Figure 3It is a schematic diagram of the top view of the structure of the surface-mounted battery pack NTC temperature sensor of the utility model;

[0019] Figure 4 It is a rear view structural schematic diagram of the surface-mounted battery pack NTC temperature sensor of the utility model.

[0020] Reference numerals: 1. NTC thermistor; 2. PPS housing; 3. PPS upper cover; 4. Wire; 5. Polyimide film tape. DETAILED DESCRIPTION

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 The surface-mounted battery pack NTC temperature sensor includes: a PPS shell 2, which is a high-performance thermoplastic resin; a detection component, which includes an NTC thermistor 1, which is fixedly connected to the bottom of the PPS shell 2. When in use, the NTC thermistor 1 is packaged through a specific process to form a temperature sensor. By utilizing the thermal effect of the NTC thermistor 1, the resistance value decreases rapidly as the temperature rises and increases as the temperature decreases. By utilizing this characteristic, the NTC thermistor 1 can determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of detecting and controlling the temperature. The battery pack temperature control can effectively ensure the efficient and safe operation of the battery system.

[0022] The top of the PPS housing 2 is provided with a PPS upper cover 3, which can close the top of the PPS housing 2;

[0023] The outside of the PPS housing 2 is fixedly connected to two wires 4, which can connect the entire device to the circuit for operation;

[0024] The surface of the NTC thermistor 1 is wrapped with a polyimide film tape 5, and the polyimide film tape 5 can provide high temperature protection for the NTC thermistor 1, thereby ensuring that the sensor is safely used under high temperature conditions;

[0025] The PPS housing 2 is small in size and can be designed to match the battery pack. After the sensor is installed on the battery pack fixing bracket, the bracket can be directly removed to attach the sensor to the battery, making installation convenient.

[0026] A single-ended element is arranged inside the PPS housing 2, and the single-ended element can ensure the stability and high sensitivity of the sensor;

[0027] It should be noted that when the utility model is used, the NTC thermistor 1 is packaged through a specific process to make a temperature sensor. By utilizing the thermal effect of the NTC thermistor 1, the resistance value decreases rapidly as the temperature rises and increases as the temperature decreases. By utilizing this characteristic, the NTC thermistor 1 can be used to determine the corresponding temperature by measuring its resistance value, thereby achieving the purpose of detecting and controlling the temperature. The battery pack temperature control can effectively ensure the efficient and safe operation of the battery system.

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 Surface-mounted battery pack NTC temperature sensor, NTC thermistor 1 exposes a part of the bottom of the PPS shell 2, and the rest is encapsulated in the PPS shell 2 with a single-component room temperature vulcanized silicone rubber. The single-component room temperature vulcanized silicone rubber can provide buffer protection for the component. This structure can make the head of the NTC thermistor 1 flexibly shrink, better fit the battery surface, and can measure temperature with high sensitivity and rapidity;

[0029] It should be noted that the utility model can provide buffer protection for the components through the single-component room temperature vulcanized silicone rubber. This structure can make the head of the NTC thermistor 1 flexibly shrink and better fit the battery surface, so as to measure temperature with high sensitivity and rapidity.

[0030] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. Surface mount battery pack NTC temperature sensor, characterized in that: include: A PPS shell (2), wherein the PPS shell (2) is a high-performance thermoplastic resin; A detection component, the detection component comprising an NTC thermistor (1), the NTC thermistor (1) being fixedly connected to the bottom of a PPS housing (2).

2. The surface-mount battery pack NTC temperature sensor according to claim 1, characterized in that: A portion of the NTC thermistor (1) is exposed from the bottom of the PPS housing (2), and the remaining portion is encapsulated in the PPS housing (2) using single-component room temperature vulcanized silicone rubber.

3. The surface-mount battery pack NTC temperature sensor according to claim 1, characterized in that: A PPS upper cover (3) is disposed on the top of the PPS housing (2).

4. The surface-mount battery pack NTC temperature sensor according to claim 1, characterized in that: Two electric wires (4) are fixedly connected to the outside of the PPS housing (2).

5. The surface-mount battery pack NTC temperature sensor according to claim 1, characterized in that: The surface of the NTC thermistor (1) is wrapped with a polyimide film tape (5).

6. The surface-mount battery pack NTC temperature sensor according to claim 1, characterized in that: The PPS housing (2) is small in size and can be designed to match the battery pack.

7. The surface-mount battery pack NTC temperature sensor according to claim 1, characterized in that: A single-ended element is arranged inside the PPS housing (2).

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