CN218411468U

CN218411468U - Temperature sensor of automobile lithium battery liquid cooling system

Info

Publication number: CN218411468U
Application number: CN202222498637.0U
Authority: CN
Inventors: 刘威
Original assignee: Shenzhen Kemin Sensor Co ltd
Current assignee: Shenzhen Kemin Sensor Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-01-31
Anticipated expiration: 2032-09-21

Abstract

The utility model is suitable for a temperature sensor technical field. The utility model discloses a temperature sensor of a liquid cooling system of an automobile lithium battery, which comprises a terminal, a connector, a thermistor, a water cooling pipe, heat conducting glue and a sealing ring; the beneficial effects of the utility model reside in that: 1. the performance is excellent, the temperature sensing is accurate, firm and safe; 2. the steady-state temperature fluctuation is small, the anti-interference capability is strong, and the reliability is high; 3. the double NTC thermistors monitor the water temperature simultaneously, so that the temperature sensing effect is more accurate and reliable; 4. the energy consumption is low, the thermal response time is short, and the time for reaching the set temperature is short; 5. the structure of the water cooling pipe is provided, so that the water cooling pipe is more convenient to install on the cooling water pipe; sixthly, the structure is simple and the production is easy.

Description

Temperature sensor of automobile lithium battery liquid cooling system

Technical Field

The utility model relates to a temperature sensor technical field, in particular to temperature sensor of car lithium cell liquid cooling system.

Background

A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. In an automobile, a liquid cooling system of the automobile is a power battery heat management system of the automobile, the heat capacity of cooling liquid is large, and redundant heat in a battery system can be taken away through circulation, so that the optimal working temperature of a battery pack is realized; a temperature sensor is needed in the liquid cooling system, and the temperature of the water cooling liquid in the liquid cooling system is monitored in real time. The temperature sensor of the existing automobile liquid cooling system has the following defects: 1. poor performance, inaccurate temperature sensing, insecurity and safety; 2. the steady-state temperature fluctuation is large, and the anti-interference capability is poor; 3. high energy consumption and slow thermal response time; 4. poor water resistance; 5. is inconvenient to install; 6. the structure is complex and the production is not easy.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a temperature sensor of car lithium cell liquid cooling system, its superior performance, the temperature sensing is accurate, the interference killing feature is strong, the reliability is high, energy resource consumption is low, thermal response time is fast, the time that reaches the settlement temperature is short, waterproof performance is good, the installation of being convenient for.

In order to solve the problems, the utility model provides a temperature sensor of a liquid cooling system of an automobile lithium battery, which comprises a terminal, a connector, a thermistor, a water cooling pipe, heat conducting glue and a sealing ring; the connector is provided with a connector upper joint, a connector lower joint, a sealing groove and a connector cavity; the upper connector of the connector is provided with a clamping hook; the water cooling pipe is provided with an induction head, a connector, a pipe end and an induction cavity; the upper connector of the connector is arranged at the upper end of the connector, the lower connector of the connector is arranged at the lower end of the connector, the sealing groove is arranged on the lower connector of the connector, and the connector cavity is arranged in the connector; the water-cooling pipe is tubular, pipe ends are arranged at two ends of the water-cooling pipe, the connector is arranged in the middle of the water-cooling pipe, the induction head is arranged at the lower end of the connector, and the induction head is arranged in the water-cooling pipe; the induction head is cylindrical, and the induction cavity is arranged inside the induction head; the sealing ring is arranged in the sealing groove, the lower connector of the connector and the connector are assembled into a whole, the thermistor is arranged in the induction cavity, the terminal is arranged in the connector cavity, and the terminal is electrically connected with the thermistor; the heat-conducting glue is filled in the space of the induction cavity.

Furthermore, the thermistor is a negative temperature coefficient thermistor and is an epoxy resin packaging type thermistor.

Furthermore, the material of the connector is PA66+ GF30 plastic.

Furthermore, the terminal is made of brass tinning.

Furthermore, the material of the sealing ring is EPDM.

The beneficial effects of the utility model reside in that: 1. the performance is excellent, the temperature sensing is accurate, firm and safe; 2. the steady-state temperature fluctuation is small, the anti-interference capability is strong, and the reliability is high; 3. the double NTC thermistors monitor the water temperature simultaneously, so that the temperature sensing effect is more accurate and reliable; 4. the energy consumption is low, the thermal response time is short, and the time for reaching the set temperature is short; 5. the structure of the water cooling pipe is provided, so that the water cooling pipe is more convenient to install on the cooling water pipe; sixthly, the structure is simple and the production is easy.

Drawings

In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a cross-sectional view of fig. 1.

Fig. 5 is a cross-sectional view of the connector of fig. 4.

Fig. 6 is a sectional view of the water-cooled tube of fig. 4.

The objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 6, the temperature sensor of the liquid cooling system of the lithium battery of the automobile comprises a terminal 1, a connector 2, a thermistor 3, a water cooling tube 4, a heat conducting adhesive 5 and a sealing ring 6; the connector 2 is provided with a connector upper joint 21, a connector lower joint 22, a sealing groove 23 and a connector cavity 24; the connector upper joint 21 is provided with a clamping hook 211; the water-cooling pipe 4 is provided with an induction head 41, a connector joint 42, a pipe end 43 and an induction cavity 44; the upper connector joint 21 is arranged at the upper end of the connector 2, the lower connector joint 22 is arranged at the lower end of the connector 2, the sealing groove 23 is arranged on the lower connector joint 22, and the connector cavity 24 is arranged in the connector 2; the water-cooling tube 4 is tubular, tube end heads 43 are arranged at two ends of the water-cooling tube 4, the connector 42 is arranged in the middle of the water-cooling tube 4, the induction head 41 is arranged at the lower end of the connector 42, and the induction head 41 is arranged inside the water-cooling tube 4; the induction head 41 is cylindrical, and the induction cavity 44 is arranged inside the induction head 41; the sealing ring 6 is arranged in the sealing groove 23, the connector lower joint 22 and the connector joint 42 are assembled into a whole, the thermistor 3 is arranged in the induction cavity 44, the terminal 1 is arranged in the connector cavity 24, and the terminal 1 is electrically connected with the thermistor 3; the heat conducting glue 5 fills the space of the sensing cavity 44.

As shown in fig. 4, the thermistor 3 is a negative temperature coefficient thermistor and is an epoxy resin-encapsulated thermistor; specifically, the NTC thermistor is a sensor resistor whose resistance value decreases with an increase in temperature; the sensor is widely applied to various electronic elements such as a temperature sensor.

As shown in fig. 1 to 5, the connector 2 is made of PA66+ GF30 plastic; specifically, the PA66+ GF30 plastic is a general name of adding 30% of glass fiber to the PA66 plastic raw material, and the color of the plastic connecting shell 2 is black; the PA66 plastic is polyhexamethylene adipamide; and the color of the plastic socket connector 2 is black.

As shown in fig. 4, the material of the terminal 1 is brass tin plating; specifically, the copper tinning can be used for chemically tinning the surfaces of red copper, brass, beryllium copper and copper alloy, and the tin plating is bright silvery white, so that the weldability and the decorativeness of copper can be improved, the conductivity is not influenced, and the copper tinning can be used in the aspects of electronic industry, furniture, food packaging and the like; oxidation resistance and beautiful appearance of the copper workpiece.

As shown in fig. 4, the material of the sealing ring 6 is EPDM; specifically, EPDM is an ethylene-propylene-diene monomer, which is a copolymer of ethylene, propylene and a small amount of non-conjugated diene, and is one of ethylene-propylene rubbers; the color of the sealing ring 3 and the gasket 4 is black.

The working process of the embodiment: the product is arranged in a water cooling liquid pipeline of a liquid cooling system, two end heads 43 of the water cooling pipe 4 are inserted into the water cooling liquid pipe, and the sealing ring 6 plays a role of preventing water from entering; the connector upper joint 21 of the connector 2 is electrically connected with the connector of the liquid cooling system control unit, and the hook 211 is clamped with the connector of the control unit to prevent shaking disconnection; the water cooling liquid of the liquid cooling system flows through the water cooling liquid pipe and finally passes through the water cooling pipe 4; the induction head 41 of the product is contacted with the water cooling liquid, and the thermistor 3 is used for inducing the temperature of the water cooling liquid, converting the temperature into an electric signal and sending the electric signal to the control unit of the liquid cooling system; therefore, the liquid cooling system detects the temperature of the water cooling liquid and feeds back the temperature of the water cooling liquid, so that the water cooling system is adjusted, and the cooling effect and the energy-saving effect of the liquid cooling system are improved.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.

Claims

1. A temperature sensor of an automobile lithium battery liquid cooling system is characterized by comprising a terminal (1), a connector (2), a thermistor (3), a water cooling pipe (4), heat conducting glue (5) and a sealing ring (6); the connector (2) is provided with an upper connector joint (21), a lower connector joint (22), a sealing groove (23) and a connector cavity (24); the connector upper joint (21) is provided with a clamping hook (211); the water-cooling pipe (4) is provided with an induction head (41), a connector (42), a pipe end (43) and an induction cavity (44); the connector upper joint (21) is arranged at the upper end of the connector (2), the connector lower joint (22) is arranged at the lower end of the connector (2), the sealing groove (23) is arranged on the connector lower joint (22), and the connector cavity (24) is arranged in the connector (2); the water-cooling pipe (4) is tubular, pipe end heads (43) are arranged at two ends of the water-cooling pipe (4), the connector (42) is arranged in the middle of the water-cooling pipe (4), the induction head (41) is arranged at the lower end of the connector (42), and the induction head (41) is arranged inside the water-cooling pipe (4); the induction head (41) is cylindrical, and the induction cavity (44) is arranged inside the induction head (41); the sealing ring (6) is arranged in the sealing groove (23), the connector lower joint (22) and the connector joint (42) are assembled into a whole, the thermistor (3) is arranged in the induction cavity (44), the terminal (1) is arranged in the connector cavity (24), and the terminal (1) is electrically connected with the thermistor (3); the space of the induction cavity (44) is filled with the heat-conducting glue (5).

2. The temperature sensor of the liquid cooling system of the lithium battery of the automobile as claimed in claim 1, wherein the thermistor (3) is a negative temperature coefficient thermistor and is an epoxy resin encapsulated thermistor.

3. The temperature sensor of the liquid cooling system of the lithium battery of the automobile as claimed in claim 1, wherein the connector (2) is made of PA66+ GF30 plastic.

4. The temperature sensor of the liquid cooling system of the lithium battery of the automobile as claimed in claim 1, wherein the terminal (1) is made of tin-plated brass.

5. The temperature sensor of the liquid cooling system of the lithium battery of the automobile as claimed in claim 1, wherein the material of the sealing ring (6) is EPDM.