CN214588989U

CN214588989U - Lithium battery temperature control system and new energy vehicle

Info

Publication number: CN214588989U
Application number: CN202022524775.2U
Authority: CN
Inventors: 姚科; 何波; 吕州; 钟舒雨; 唐晓鹏
Original assignee: Guangzhou HKUST Fok Ying Tung Research Institute
Current assignee: Guangzhou HKUST Fok Ying Tung Research Institute
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-11-02
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a lithium cell temperature control system and new forms of energy car, lithium cell temperature control system includes snakelike heat pipe, force pump, water tank, a temperature sensor and main control unit, the last quick-operation joint that is provided with of snakelike pipeline, snakelike heat pipe passes through the pipe connection with the force pump, snakelike heat pipe passes through the pipe connection with the water tank, the force pump passes through the pipe connection with the water tank, main control unit passes through the circuit connection with a temperature sensor, snakelike heat pipe sets up on the lithium cell, a temperature sensor sets up on the lithium cell. The embodiment of the utility model provides a lithium battery temperature control system through set up quick-operation joint on the snakelike heat pipe at lithium cell liquid cooling circulation, realizes lithium cell temperature control system's rapid Assembly, has improved lithium cell temperature control system's assembly and dismantlement efficiency. The utility model discloses can wide application in lithium cell technical field.

Description

Lithium battery temperature control system and new energy vehicle

Technical Field

The utility model relates to a lithium cell technical field especially relates to a lithium cell temperature control system and new forms of energy car.

Background

Compared with the traditional automobile, the whole automobile structure of the new energy automobile does not comprise an engine and a gearbox. Therefore, the heat management architecture of the whole vehicle is changed greatly and replaced by the heat management of an electric control system, a motor and a battery. In the driving process of a new energy vehicle, the heat management of the whole vehicle plays a great role, and puts forward more rigorous requirements on the aspects of heat dissipation capacity, heating capacity, energy consumption and the like of a motor loop and a battery loop.

Lithium battery temperature control system in the new energy car generally uses the liquid cooling at present, and the pipeline among the lithium battery temperature control system is dismantled and the assembly is comparatively difficult.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a lithium cell temperature control system and new forms of energy car can improve the assembly and the dismantlement efficiency of lithium cell temperature control system's pipeline.

The utility model discloses a first technical scheme who adopts is:

the utility model provides a lithium battery temperature control system, includes snakelike heat pipe, force pump, water tank, a temperature sensor and main control unit, the last quick-operation joint that is provided with of snakelike pipeline, snakelike heat pipe with the force pump passes through the pipe connection, snakelike heat pipe with the water tank passes through the pipe connection, the force pump with the water tank passes through the pipe connection, main control unit with the water tank passes through the circuit connection, main control unit with a temperature sensor passes through the circuit connection, snakelike heat pipe sets up on the lithium cell, a temperature sensor sets up on the lithium cell.

Further, the water tank includes microprocessor, second temperature sensor and fan, microprocessor with second temperature sensor passes through circuit connection, the fan with microprocessor passes through circuit connection.

Further, the water tank also comprises a PTC heater, and the PTC heater is connected with the microprocessor through a circuit.

Further, the snakelike heat conduction pipe is arranged at the bottom of the lithium battery.

Further, the lithium battery temperature control system further comprises a buzzer, and the buzzer is connected with the main controller through a circuit.

Further, a check valve is arranged on the snake-shaped heat conduction pipe.

Further, the snakelike heat conduction pipe is a stainless steel pipe.

Further, the pressure pump is a negative pressure vacuum pump.

Further, the lithium battery temperature control system further comprises an electromagnetic valve, and the electromagnetic valve is connected with the main controller.

The utility model discloses the second technical scheme who adopts is:

a new energy vehicle comprises the lithium battery temperature control system.

The embodiment of the utility model provides a lithium battery temperature control system through set up quick-operation joint on the snakelike heat pipe at lithium cell liquid cooling circulation, realizes lithium cell temperature control system's rapid Assembly, has improved lithium cell temperature control system's assembly and dismantlement efficiency.

Drawings

Fig. 1 is a block diagram of a temperature control system for a lithium battery according to an embodiment of the present invention;

fig. 2 is a structural diagram of a temperature control system of a lithium battery according to an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

An oil tank of a traditional fuel oil automobile is connected with an engine, the engine is driven by fuel oil, and power of the engine is transmitted to wheels through a transmission, so that the automobile is driven to run; the new energy vehicle is provided with a lithium battery, the lithium battery is connected with the motor, the motor is driven by electric energy of the lithium battery, and power of the motor is transmitted to the wheels through the speed reducer, so that the vehicle is driven to run.

Compare in traditional fuel automobile, be provided with the lithium cell on the new forms of energy car, and the lithium cell on the new forms of energy car carries out work when the ambient temperature is too high and can accelerate the ageing process of lithium cell, shortens the life-span of lithium cell, consequently need control the temperature of lithium cell in the new forms of energy car to improve the life of lithium cell in the new forms of energy car.

The embodiment of the utility model provides a lithium battery temperature control system, refer to fig. 1, lithium battery temperature control system includes pipeline loop part and circuit connection part, refer to fig. 2, lithium battery temperature control system's pipeline loop part includes snakelike heat pipe 204, force pump 201 and water tank 202, force pump 201 and snakelike heat pipe 204 interconnect and form the return circuit, thereby realize lithium battery temperature control system's pipeline 203 loop circulation, force pump 201 takes out the heat conduction medium in the water tank 202 to snakelike heat pipe 204, the heat conduction medium gets back to water tank 202 again after passing through snakelike heat pipe 204 and realizes the circulation; the pressure pump 201 may use a negative pressure vacuum pump, and by using the negative pressure vacuum pump, the pressure pump 201 may be made to emit less noise. Snakelike heat pipe 204 can increase the area of contact between lithium cell and the heat transfer pipeline for setting to snakelike pipeline to snakelike heat pipe 204 to improve lithium cell temperature control system's heat exchange efficiency, snakelike heat pipe 204 can set up in the bottom of lithium cell, also can set up in other positions of lithium cell, can not reveal it on the lithium cell when can make snakelike heat pipe 204 take place the heat conduction media and reveal through setting up snakelike heat pipe 204 in the bottom of lithium cell. The serpentine heat pipe 204 can be made of stainless steel, and the serpentine heat pipe 204 can be made more corrosion-resistant by using the stainless steel pipe, so that the service life of the lithium battery temperature control system is prolonged. The water tank 202 is used for storing a heat conducting medium, and plays a role of buffering in the lithium battery temperature control system. The circuit connection part of the lithium battery temperature control system comprises a main control center, a first temperature sensor and a pressure pump 201, wherein the first temperature sensor is arranged on a lithium battery and used for measuring the temperature of the lithium battery and transmitting the measured temperature to the main control center, and the main control center controls the power of the pressure pump 201 according to the measured temperature. For example, when the temperature of the lithium battery is greatly different from the target temperature, the main control center increases the power of the pressure pump 201, so that the pressure pump 201 operates at high efficiency, and the lithium battery is enabled to approach the target temperature more quickly; when the temperature of the lithium battery is smaller than the target temperature, the main control center reduces the power of the pressure pump 201 and even stops the operation of the pressure pump 201, so that the temperature of the lithium battery is stabilized at the target temperature.

In some embodiments, referring to fig. 2, the serpentine heat pipe 204 is provided with a check valve, which is a valve in which the opening/closing member is a circular valve flap and acts by its own weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end and flows out from the outlet end. The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. Through set up the check valve on snakelike heat pipe 204, can prevent that heat-conducting medium from backflowing in snakelike heat pipe 204, lead to lithium cell temperature control system's temperature control to play the adverse effect.

In some embodiments, referring to fig. 2, a quick coupling is disposed on the serpentine pipe 203, the quick coupling is a coupling that can realize connection or disconnection of the pipes without using tools, and the quick couplings are disposed at two ends of the serpentine pipe 203, so that the serpentine pipe 203 does not need tools during assembly and disassembly, and the assembly and disassembly rates are faster, thereby improving the assembly efficiency of the lithium battery temperature control system.

In some embodiments, the water tank 202 not only stores the heat conducting medium, but also cools the heat conducting medium, referring to fig. 1 and 2, a microprocessor, a second temperature sensor PTC heater and a fan are disposed in the water tank 202, the second temperature sensor is used for measuring the temperature of the heat conducting medium in the water tank 202 and transmitting the measurement result to the microprocessor, the microprocessor generates a control signal according to the obtained measurement result, and transmits the control signal to a driver for driving the fan and a driver for driving the PTC heater, thereby implementing temperature control of the water tank 202. For example, after the second temperature sensor detects the temperature of the water tank 202, the detected temperature of the water tank 202 is transmitted to the microprocessor, the microprocessor compares the detected temperature of the water tank 202 with a target temperature to obtain a difference value between the temperature of the water tank 202 and the target temperature, and when the temperature of the water tank 202 is higher than the target temperature by a certain threshold range, the power of the fan is controlled according to the difference value to realize the cooling of the heat-conducting medium in the water tank 202; when the temperature of the water tank 202 is lower than the target temperature by a certain threshold range, the power of the PTC heater is controlled according to the difference value, and the heating of the heat-conducting medium in the water tank 202 is realized.

In some embodiments, in order to improve the safety of the lithium battery temperature control system, a buzzer is further arranged in the lithium battery temperature control system, the buzzer is connected with the main controller, under the condition that the lithium battery temperature control system fails, the main controller can transmit an alarm control signal to the buzzer, and the buzzer can give an alarm after receiving the alarm control signal, so that a user is reminded that the lithium battery temperature control system fails.

In some embodiments, referring to fig. 2, in order to improve the safety of the lithium battery temperature control system, the lithium battery temperature control system is further provided with an electromagnetic valve, and the electromagnetic valve is arranged on the pipeline 203 of the lithium battery temperature control system and is used for blocking the circulation of the heat conducting medium, for example, when there is leakage in the pipeline 203 of the lithium battery temperature control system, the previous electromagnetic valve at the leakage position of the pipeline 203 can be controlled to be closed, so that the heat conducting medium is blocked from flowing to the leakage section of the pipeline 203, the leakage of the heat conducting medium can be effectively reduced, and the safety of the lithium battery temperature control system is improved.

In some embodiments, referring to fig. 2, the lithium battery temperature control system is integrated in the case 205, and by integrating the lithium battery temperature control system in the case 205, convenience in movement and transportation of the lithium battery temperature control system may be improved.

The embodiment of the utility model provides a new forms of energy car is still provided, including the lithium cell temperature control system in the above-mentioned embodiment.

Be equipped with lithium cell temperature control system in the new forms of energy car and can control the temperature of lithium cell effectively, lower the temperature to the lithium cell when the lithium cell temperature is higher, heat up the lithium cell when the lithium cell temperature is lower to improve the operating efficiency and the life of lithium cell.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. In addition, for convenience of description, only a part of the structure related to the present invention, not the whole structure, is shown in the drawings.

Finally, it should also be noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities or even actual quantities of such entities. Thus, a feature defined by terms such as "first" and "second" may explicitly or implicitly include at least one such feature. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. The utility model provides a lithium battery temperature control system, its characterized in that, includes snakelike heat pipe, force pump, water tank, a temperature sensor and main control unit, be provided with quick-operation joint on the snakelike heat pipe, snakelike heat pipe with the force pump passes through the pipe connection, snakelike heat pipe with the water tank passes through the pipe connection, the force pump with the water tank passes through the pipe connection, main control unit with the water tank passes through the circuit connection, main control unit with a temperature sensor passes through the circuit connection, snakelike heat pipe sets up on the lithium cell, a temperature sensor sets up on the lithium cell.

2. The lithium battery temperature control system of claim 1, wherein the water tank comprises a microprocessor, a second temperature sensor, and a fan, the microprocessor is electrically connected to the second temperature sensor, and the fan is electrically connected to the microprocessor.

3. The lithium battery temperature control system of claim 2, wherein the water tank further comprises a PTC heater electrically connected to the microprocessor.

4. The lithium battery temperature control system of claim 1, wherein the serpentine heat pipe is disposed at a bottom of the lithium battery.

5. The lithium battery temperature control system of claim 1, further comprising a buzzer, wherein the buzzer is electrically connected to the main controller.

6. The lithium battery temperature control system of claim 1, wherein the serpentine heat pipe is provided with a check valve.

7. The lithium battery temperature control system of claim 1, wherein the serpentine heat pipe is a stainless steel tube.

8. The lithium battery temperature control system of claim 1, wherein the pressure pump is a negative pressure vacuum pump.

9. The lithium battery temperature control system of claim 1, further comprising a solenoid valve, the solenoid valve being connected to the main controller.

10. A new energy vehicle, characterized by comprising a lithium battery temperature control system according to any one of claims 1 to 9.