CN207910028U - A kind of automobile batteries heat management system - Google Patents

Abstract

The utility model provides a thermal management system for an automobile battery. The thermal management system includes: a temperature sensor connected to a battery module, a first pipeline is arranged inside the battery module, and one end of the first pipeline is connected to the inlet of the battery module. The other end of the first pipeline is connected with the outlet of the battery module, and a second pipeline is arranged outside the battery module, and the two ends of the second pipeline are respectively connected with the inlet and the outlet, and the first pump is sequentially arranged on the second pipeline The first heat exchanger is connected with the evaporator of the automobile air conditioner, the output end of the temperature sensor is connected with the single-chip microcomputer, and the single-chip microcomputer is connected with the first pumping device. The utility model provides an automobile battery heat management system, which can realize the intelligent control of the heat management system, and make the heat exchange of the battery module more timely and accurate; in addition, by connecting the first heat exchanger with the evaporator, it can It saves external energy consumption and realizes the recycling of heat.

Description

A car battery thermal management system

technical field

The utility model relates to the technical field of automobile batteries, in particular to a heat management system for automobile batteries.

Background technique

In the design of pure electric vehicles, in order to prevent the performance of pure electric vehicle batteries from degrading due to temperature rise, the heat dissipation management of batteries must be carried out. A good heat dissipation system can not only effectively improve the environmental adaptability of the vehicle, but also greatly extend the service life of the battery. Whether it is a lithium-ion wire or a nickel-metal hydride battery, there must be a normal operating temperature range. Therefore, the temperature management of the battery is very important.

Taking a lithium-ion battery as an example, its normal operating temperature range is -25°C-80°C. There are three commonly used battery thermal management modes, water-cooled (hot) type, air-cooled (hot) type, and air-conditioning system cold (hot) type. They all have some disadvantages, such as the water-cooled type is difficult to heat the battery pack in pure electric power. When charging, generally speaking, the 20-hour rate nominal capacity of an electric vehicle battery is 12Ah, and the discharge current using a 7230 capacity detector is 5A, that is, the 2-hour rate discharge detection capacity. At this time, the battery with 100% full capacity is only 10Ah , that can discharge continuously for 120 minutes. According to the electric vehicle battery industry standard, more than 70% can ensure that the continuation mileage is greater than 20KM, that is, 0.7×120=84 minutes. What is emphasized is that the capacity of the three batteries must be consistent in the group, otherwise the capacity of the whole group will be affected due to the lag of one battery after the user uses it for a period of time, and the temperature will drop by 20°C, and the capacity of the 2-hour rate discharge battery will decrease by about 1Ah.

Therefore, a battery thermal management system is important to shorten charging time and battery life. It can be said that solving the difficulty of battery charging and slow charging also solves the problem of pure electric vehicles.

Most of the existing electric vehicles have the problem that the heat management of the battery is not timely and requires additional energy consumption, which leads to the problem that the battery of the vehicle cannot be used for a long time.

Utility model content

The utility model provides an automobile battery heat management system which overcomes the problem that the heat management of the battery of the existing electric automobile is not timely and requires extra energy consumption, which leads to the failure of the automobile battery to be used for a long time, or at least partly solves the above-mentioned problem. management system.

According to the utility model, a thermal management system for an automobile battery is provided, the thermal management system includes: a temperature sensor, a first check valve, a first heat exchanger, a single-chip microcomputer, and a first pumping device; the temperature sensor and the battery module Connected, a first pipeline is set inside the battery module, one end of the first pipeline is connected to the inlet of the battery module, and the other end of the first pipeline is connected to the outlet of the battery module A second pipeline is provided outside the battery module. device, the first heat exchanger and the first one-way valve, the first heat exchanger is connected to the automobile air conditioner evaporator, the output end of the temperature sensor is connected to the single-chip microcomputer, and the single-chip microcomputer is connected to the connected to the first pumping device.

On the basis of the above solution, an automotive battery thermal management system further includes: a second check valve, a second heat exchanger, and a second pumping device; between the inlet and the outlet, the battery module A third pipeline is arranged on the outside of the third pipeline, and the two ends of the third pipeline are respectively connected with the inlet and the outlet, and the second pumping device, the second pumping device, and the second pumping device are sequentially arranged on the third pipeline. The heater and the second one-way valve, and the second pumping device are connected with the single-chip microcomputer.

On the basis of the above solution, the second heat exchanger is connected with the automobile air conditioner condenser.

On the basis of the above solution, the second pipeline is provided with a first electric ball valve, and the first electric ball valve is located between the first pumping device and the outlet or the inlet; A second electric ball valve is provided on the road, and the second electric ball valve is located between the second pumping device and the outlet or the inlet; the first electric ball valve and the second electric ball valve are respectively connected to the MCU connected.

On the basis of the above solution, the output end of the first one-way valve is close to the outlet or the inlet connected to it; the output end of the second one-way valve is close to the outlet or the inlet connected to it .

On the basis of the above scheme, the batteries inside the battery module are arranged in a matrix, a plurality of batteries arranged in a row form a group, and multiple groups of batteries are detachably connected side by side, and the pipes of the first pipeline are evenly arranged at any between two sets of batteries.

On the basis of the above solution, a plurality of the temperature sensors are arranged inside the battery module, and the plurality of temperature sensors are evenly distributed inside the battery module, and each of the temperature sensors is connected to one side of the battery wall contact.

On the basis of the above solution, inside the battery module, the gap between the pipe of the first pipeline and any battery is filled with an insulating and heat-conducting medium.

On the basis of the above solution, the working medium in the first pipeline, the second pipeline and the third pipeline includes: liquid metal.

On the basis of the above solution, the pipe material of the first pipeline, the second pipeline and the third pipeline includes: copper pipe.

The utility model provides a heat management system for an automobile battery. By setting the first pipeline, the working medium can conduct convective heat exchange with the battery module, and can control the temperature of the battery module; by setting a temperature sensor, the battery module can be detected in real time. temperature, and by setting the single-chip microcomputer to control the start and stop of the first pumping device, the intelligent control of the thermal management system can be realized, so that the heat exchange of the battery module is more timely and accurate; in addition, by connecting the first heat exchanger with the evaporator Connected to the evaporator, and the evaporator is used to provide cooling capacity, so that the battery module can be cooled without consuming external energy, which can save energy consumption. At the same time, the heat of the battery module can be used by the evaporator, which realizes the recycling of heat and saves energy. consumption.

Description of drawings

Fig. 1 is a schematic structural diagram of an automotive battery thermal management system according to an embodiment of the present invention;

Fig. 2 is a top view of a battery module in an automotive battery thermal management system according to an embodiment of the present invention.

Explanation of reference signs:

1—shell; 2—battery module; 3—internal space of battery;

4—the first pipeline; 5—the first one-way valve; 6—the temperature sensor;

7—the second one-way valve; 8—the second heat exchanger; 9—the second pumping device;

10—the first electric ball valve; 11—the first pumping device; 12—the first heat exchanger;

13—the second pipeline; 14—the third pipeline.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

This embodiment provides a thermal management system for an automobile battery according to the present invention. Referring to FIG. Device 11; the temperature sensor 6 is connected to the battery module 2, and a first pipeline 4 is arranged inside the battery module 2, and one end of the first pipeline 4 is connected to the inlet of the battery module 2, so The other end of the first pipeline 4 communicates with the outlet of the battery module 2, and a second pipeline 13 is arranged outside the battery module 2, and the two ends of the second pipeline 13 are respectively connected to the inlet Connected to the outlet, the first pumping device 11, the first heat exchanger 12 and the first one-way valve 5 are sequentially arranged on the second pipeline 13, and the first heat exchanger The device 12 is connected to the evaporator of the automobile air conditioner, the output end of the temperature sensor 6 is connected to the single-chip microcomputer, and the single-chip microcomputer is connected to the first pumping device 11 .

The automobile battery thermal management system provided in this embodiment can cool the battery module 2 in time according to the temperature of the automobile battery module 2, and use the cooling capacity of the automobile air conditioner evaporator to cool the battery module 2, which can reduce energy consumption .

The thermal management system is provided with a first pipeline 4 inside the battery module 2 , and the working medium flows inside the first pipeline 4 to perform convective heat exchange with the battery inside the battery module 2 , thereby regulating the temperature of the battery module 2 .

The first pipeline 4 may have multiple branches inside the battery module 2 , which are respectively distributed in different positions of the battery module 2 . Multiple branches of the first pipeline 4 are collected together at both ends of the battery module 2 to form a general pipeline. The places where the first pipeline 4 gathers at both ends of the battery module 2 are respectively the outlet and the inlet of the battery module 2 .

The outlet and the inlet are openings through which the first pipeline 4 communicates with the outside world. Both the outlet and the inlet are one opening, and the outside world can communicate with multiple branches of the first pipeline 4 through the one opening of the inlet or the outlet.

Outside the battery module 2, a second pipeline 13 is provided between the inlet and the outlet, and the two ends of the second pipeline 13 are respectively connected to the outlet and the inlet. The inlet and outlet can be connected through the second pipeline 13 . The first pipeline 4 and the second pipeline 13 are respectively connected at the outlet and the inlet to form a closed pipeline.

The first pumping device 11 is sequentially arranged on the second pipeline 13 for driving the flow of the working medium in the pipeline. A first heat exchanger 12 is provided for cooling down the temperature of the working medium in the pipeline through heat exchange. A first one-way valve 5 is provided to control the flow direction of the working medium in the pipeline. The first pumping device 11, the first heat exchanger 12 and the first one-way valve 5 are sequentially arranged between the outlet and the inlet.

The single chip microcomputer is set to realize the intelligent control of the thermal management system. The temperature sensor 6 is connected to the battery module 2 and can monitor the temperature of the battery module 2 in real time. And the detected temperature of the battery module 2 is sent to the single-chip microcomputer through an electronic signal.

The single-chip microcomputer can control the operation and stop of the first pumping device 11 according to the received actual temperature of the battery module 2 delivered by the temperature sensor 6 . The first pumping device 11 is normally closed and out of operation.

When the actual temperature of the battery module 2 is higher than the set first temperature threshold, the single-chip microcomputer can control the first pumping device 11 to start running. When the first pumping device 11 starts to operate, it can drive the working medium in the first pipeline 4 and the second pipeline 13 to flow in the pipelines.

The working medium can perform forced convection heat exchange at the first heat exchanger 12 to obtain cooling capacity, so that the working medium can obtain a lower temperature. The flow of the lower-temperature working medium in the first pipeline 4 can perform convective heat exchange to cool down the battery module 2 . Therefore, the temperature of the battery module 2 is controlled, which is beneficial to normal use.

The first one-way valve 5 is provided so that the working medium in the first pipeline 4 and the second pipeline 13 can circulate in one direction, and the flow direction of the working medium can be controlled. The set first temperature threshold may be the highest temperature of the battery module 2 in a normal working state.

Further, the first heat exchanger 12 is used to obtain a lower temperature of the working medium through heat exchange. The first heat exchanger 12 is connected with a device capable of absorbing heat and providing cold energy in the automobile, for example, the first heat exchanger 12 may be connected with an evaporator of an automobile air conditioner. The evaporator requires heat from the outside, while the first heat exchanger 12 needs to release heat and provide cooling from the outside. The two can just be connected and can meet the requirements of each other.

The first heat exchanger 12 is connected to the evaporator of the automobile air conditioner. Specifically, the side wall of the first heat exchanger 12 can be in direct or indirect contact with the side wall of the evaporator to the greatest extent, so that the first heat exchange can be realized to the greatest extent. The working medium in the vessel 12 performs convective heat exchange with the medium in the evaporator.

In the heat management system for an automobile battery provided in this embodiment, by setting the first pipeline 4, the working medium can conduct convective heat exchange with the battery module 2, and can control the temperature of the battery module 2; by setting the temperature sensor 6, it can Real-time detection of the temperature of the battery module 2, and by setting the single-chip microcomputer to control the start and stop of the first pumping device 11, the intelligent control of the thermal management system can be realized, so that the heat exchange of the battery module 2 is more timely and accurate; The first heat exchanger 12 is connected to the evaporator, and the evaporator can be used to provide cold energy to cool down the battery module 2 without consuming external energy, which can save energy consumption, and at the same time, the heat of the battery module 2 can be used by the evaporator , to realize the recycling of heat and save energy consumption.

Further, the single-chip microcomputer can also control and adjust the flow rate of the first pumping device 11 . The single-chip microcomputer determines the flow rate of the first pumping device 11 according to the internal temperature of the battery module 2 .

On the basis of the above embodiments, further, an automotive battery thermal management system further includes: a second check valve 7, a second heat exchanger 8 and a second pumping device 9; A third pipeline 14 is arranged between and outside the battery module 2, and the two ends of the third pipeline 14 are connected to the inlet and the outlet respectively, and the The second pumping device 9, the second heat exchanger 8 and the second one-way valve 7, the second pumping device 9 is connected with the single chip microcomputer.

This embodiment is based on the above embodiments, and a third pipeline 14 is added. The third line 14 is also arranged between the inlet and the outlet, outside the battery module 2 . Both ends of the third pipeline 14 are respectively connected to the inlet and the outlet, and the third pipeline 14 is connected to the first pipeline 4 to form a closed communication pipeline.

On the third pipeline 14, the second one-way valve 7, the second heat exchanger 8 and the second pumping device 9 are sequentially connected between the inlet and the outlet. The second one-way valve 7 is used to control the flow direction of the working medium in the third pipeline 14 . The second heat exchanger 8 is a heat exchange device for absorbing external heat to increase the temperature of the working medium. The increase in temperature of the working medium can heat the battery module 2 .

The second pumping device 9 is connected with the single-chip microcomputer. The single-chip microcomputer also controls the start and stop of the second pumping device 9 according to the actual temperature of the battery module 2 sent by the temperature sensor 6 . The second pumping device 9 is normally closed, so that the working medium can be blocked from flowing in the third pipeline 14 .

When the actual temperature of the battery module 2 is lower than the set second working threshold, the single-chip microcomputer can control the second pumping device 9 to start running. The operation of the second pumping device 9 can drive the working medium to flow in the third pipeline 14 and the first pipeline 4, and the working medium can absorb external heat at the second heat exchanger 8 to increase the temperature. When the working medium with a higher temperature flows into the first pipeline 4, it can conduct convective heat exchange with the battery module 2, thereby heating the battery module 2 and keeping it in normal operation.

The set second working threshold may be the lowest temperature at which the battery module 2 works normally.

Further, the single-chip microcomputer can also control and adjust the flow rate of the second pumping device 9 . The single-chip microcomputer determines the flow rate of the second pumping device 9 according to the internal temperature of the battery module 2 .

The first heat exchanger 12 is a radiation heat exchanger, and the second heat exchanger 8 is a heating heat exchanger. By setting the third pipeline 14, the heating function of the battery module 2 can be realized, so as to prevent the temperature of the battery module 2 from being too low and affecting normal use.

Further, the single chip microcomputer can simultaneously control the start and stop of the first pumping device 11 and the second pumping device 9 . The first pumping device 11 is mainly used to drive the working medium to flow in the closed pipeline formed by the second pipeline 13 and the first pipeline 4. In this closed pipeline, the working medium will pass through the first heat exchanger 12 to obtain The lower temperature is used to cool down and dissipate heat from the battery module 2 .

The second pumping device 9 is mainly used to drive the working medium to flow in the closed pipeline formed by the third pipeline 14 and the first pipeline 4. In this closed pipeline, the working medium will pass through the second heat exchanger 8 to obtain The higher temperature is used for heating the battery module 2 .

The single chip microcomputer should select and control the operation of the first pumping device 11 or the second pumping device 9 according to the actual temperature of the battery module 2 . The first pumping device 11 and the second pumping device 9 operate separately under different conditions and cannot operate simultaneously.

Both ends of the second pipeline 13 and the third pipeline 14 are respectively connected with the inlet and the outlet at the same time, the second pipeline 13 communicates with the first pipeline 4, and the third pipeline 14 also communicates with the first pipeline 4 , so the second pipeline 13 and the third pipeline 14 are also connected at the inlet and outlet.

When the second pipeline 13 and the third pipeline 14 are connected at the inlet and outlet, the first pumping device 11 at one end of the second pipeline 13 and the second pumping device at one end of the third pipeline 14 9 In the closed state, the working medium can be prevented from passing through. The first one-way valve 5 at the other end of the second pipeline 13 and the second one-way valve 7 at the other end of the third pipeline 14 can also prevent the working medium from circulating.

Furthermore, even if the second pipeline 13 and the third pipeline 14 are connected, when the battery module 2 is dissipated, the first pumping device 11 operates, and the working medium travels through the second pipeline 13 and the first pipeline 4 Because of the closure of the second pumping device 9 and the setting of the second one-way valve 7, the working medium will not flow into the third pipeline 14, and the working medium in the third pipeline 14 will also Will not flow out.

Correspondingly, when the battery module 2 is heated, the second pumping device 9 operates, and the working medium flows in the closed circuit between the third pipeline 14 and the first pipeline 4, and because the first pumping device 11 is closed and the first one-way valve 5 is set, the working medium will not flow into the second pipeline 13, and the working medium in the second pipeline 13 will not flow out.

Therefore, the heat dissipation pipeline and the heating pipeline of the battery module 2 can be independent of each other without affecting each other.

On the basis of the above embodiments, further, the second heat exchanger 8 is connected to the automobile air conditioner condenser.

This embodiment describes the arrangement of the second heat exchanger 8 based on the above-mentioned embodiments.

The second heat exchanger 8 is used for making the working medium obtain a higher temperature through heat exchange. The second heat exchanger 8 is connected with the device capable of releasing heat and providing heat in the automobile, for example, the second heat exchanger can be connected with the condenser of the automobile air conditioner. The condenser can release heat to the outside, while the second heat exchanger 8 needs to absorb heat and needs to provide heat from the outside. The two can just be connected and can meet the requirements of each other.

The second heat exchanger 8 is connected to the condenser of the automobile air conditioner. Specifically, the side wall of the second heat exchanger 8 can be in direct or indirect contact with the side wall of the condenser to the greatest extent, so that the second heat exchange can be realized to the greatest extent. The working medium in the condenser 8 performs convective heat exchange with the medium in the condenser.

The second heat exchanger 8 is connected with the automobile air conditioner condenser, and the heat released by the condenser can be used to raise the temperature of the working medium, thereby realizing the heating of the battery module 2, which does not require additional external energy consumption and can save energy consumption; in addition, the working The medium can transfer the cold energy of the battery module 2 to the condenser, and the condenser does not require additional energy, which can also save energy consumption.

On the basis of the above embodiments, further, the second pipeline 13 is provided with a first electric ball valve 10, and the first electric ball valve 10 is located between the first pumping device 11 and the outlet or the between the inlets; the third pipeline 14 is provided with a second electric ball valve, and the second electric ball valve is located between the second pumping device 9 and the outlet or the inlet; the first electric The ball valve 10 and the second electric ball valve are respectively connected with the single-chip microcomputer.

This embodiment is based on the above embodiments, and a first electric ball valve 10 and a second electric ball valve are added.

The first pumping device 11 and the first one-way valve 5 are respectively located at two ends of the second pipeline 13 . The first one-way valve 5 is a mechanical valve, which can better control the directional flow of the working medium at this end. The first pumping means 11 is connected to the inlet or the outlet.

A first electric ball valve 10 is provided between the first pumping device 11 and the inlet or outlet. The first electric ball valve 10 is also arranged on the second pipeline 13, and its two ends are respectively connected with the first pumping device 11 and the inlet or outlet.

The first electric ball valve 10 is connected with the single-chip microcomputer, and the single-chip microcomputer can control the opening and closing of the first electric ball valve 10 . When the battery module 2 needs to be radiated and cooled, the single-chip microcomputer controls the opening of the first electric ball valve 10 and the operation of the first pumping device 11, and the working medium flows in the second pipeline 13 and the first pipeline 4 to replace the battery module 2. Heat to cool down.

Setting the first electric ball valve 10 can more accurately control the circulation and closure of the second pipeline 13 , so as to more accurately manage the heat of the battery module 2 .

Correspondingly, the second pumping device 9 and the second one-way valve 7 are respectively located at both ends of the third pipeline 14 . The second one-way valve 7 is a mechanical valve, which can better control the directional flow of the working medium at this end. The second pumping means 9 is connected to the inlet or the outlet.

A second electric ball valve is provided between the second pumping device 9 and the inlet or outlet. The second electric ball valve is also arranged on the third pipeline 14, and its two ends are respectively connected with the second pumping device 9 and the inlet or outlet.

The second electric ball valve is connected with the single-chip microcomputer, and the single-chip microcomputer can control the opening and closing of the second electric ball valve. When it is necessary to heat up the battery module 2, the single-chip microcomputer controls the opening of the second electric ball valve and the operation of the second pumping device 9, and the working medium flows in the third pipeline 14 and the first pipeline 4 to exchange heat for the battery module 2 heat up.

Setting the second electric ball valve can more accurately control the circulation and closure of the third pipeline 14 , so that the battery module 2 can be heated more accurately.

The first electric ball valve 10 and the second electric ball valve are in a normally closed state when they do not receive a control command from the single-chip microcomputer.

On the basis of the above embodiment, further, the output end of the first one-way valve 5 is close to the outlet or the inlet connected thereto; the output end of the second one-way valve 7 is close to all the ports connected thereto. said export or said import.

In this embodiment, the setting of the first one-way valve 5 and the second one-way valve 7 is described based on the above-mentioned embodiments.

For the second line 13 , the first heat exchanger 12 is located between the first pumping device 11 and the first non-return valve 5 . The first pumping device 11 can limit the circulation of the working medium in the second pipeline 13 . When the second pumping device 9 is closed, the second pipeline 13 is closed at this end, the working medium cannot flow into the second pipeline 13 and the working medium in the second pipeline 13 cannot flow out.

At the end of the first one-way valve 5 , one end of the first one-way valve 5 is connected with the first heat exchanger 12 , and the other end is connected with the inlet or the outlet. Because when heating the battery module 2 to raise the temperature, it is mainly necessary to prevent the working medium from flowing through the first heat exchanger 12 to cause the temperature of the working medium to decrease.

Therefore, at the end of the first one-way valve 5 , the working medium should be prevented from flowing to the first heat exchanger 12 . The output end of the first one-way valve 5 should face the outlet or the inlet, so that the working medium can be prevented from flowing into the second pipeline 13 and the heating of the battery module 2 can be avoided.

The output end of the first one-way valve 5 faces the inlet or outlet. When the battery module 2 needs to dissipate heat and cool down, by running the first pumping device 11, the working medium can also be realized in the first pipeline 4 and the second pipeline 13. The circulation flow realizes the cooling of the battery module 2 .

Likewise, for the third pipeline 14 , the second heat exchanger 8 is located between the second pumping device 9 and the second one-way valve 7 . The second pumping device 9 can limit the circulation of the working medium in the third line 14 . When the second pumping device 9 is closed, the third pipeline 14 is closed at this end, the working medium cannot flow into the third pipeline 14, and the working medium in the third pipeline 14 cannot flow out either.

At the end of the second one-way valve 7, one end of the second one-way valve 7 is connected with the second heat exchanger 8, and the other end is connected with the inlet or the outlet. Because when the battery module 2 is radiated and cooled, it is mainly to prevent the working medium from flowing through the second heat exchanger 8 to cause the temperature of the working medium to rise.

Therefore, at the end of the second one-way valve 7 , the working medium should be prevented from flowing to the second heat exchanger 8 . The output end of the second one-way valve 7 should face the outlet or the inlet, so that the working medium can be prevented from flowing into the third pipeline 14 and the heat dissipation of the battery module 2 can be avoided.

The output end of the second one-way valve 7 faces the inlet or outlet. When the battery module 2 needs to be heated up, by running the second pumping device 9, the working medium can also be pumped in the first pipeline 4 and the third pipeline 14. Circulating flow, so as to realize the temperature rise of the battery module 2 .

On the basis of the above embodiments, further referring to FIG. 2 , the batteries inside the battery module 2 are arranged in a matrix, and a plurality of batteries arranged in a row form a group, and multiple groups of batteries are detachably connected side by side. The pipes of a pipeline 4 are evenly arranged between any two groups of batteries.

This embodiment describes the structure of the battery module 2 based on the above-mentioned embodiments. The battery module 2 is a battery module formed by arranging a plurality of batteries.

The batteries inside the battery module 2 provided in this embodiment are arranged in a matrix. A matrix arrangement of cells includes multiple columns of cells. Each row of batteries is a group of batteries. The detachable connection between two adjacent groups of batteries. It is convenient to increase or decrease the number of battery packs. The number of groups of battery modules 2 can be increased according to actual needs, so as to increase the capacity of the battery.

For each group of batteries, there are multiple batteries arranged in a row, and there may be multiple layers of batteries. There is a gap between two adjacent columns of batteries and two adjacent rows of batteries. The pipes of the first pipeline 4 are arranged between any two adjacent rows of batteries.

And the pipes of the first pipeline 4 are evenly arranged between any two adjacent rows of batteries. A pipeline can be arranged between two adjacent batteries in each row of batteries. In this way, there are conduits running through both sides of either cell. The battery inside the battery module 2 can be evenly heated or dissipated to reduce the temperature difference of the battery module 2 .

On the basis of the above embodiments, further, a plurality of the temperature sensors 6 are arranged inside the battery module 2, and the plurality of temperature sensors 6 are evenly distributed inside the battery module 2, and each of the temperature sensors 6 The sensor 6 is in contact with the side wall of one of said cells.

This embodiment describes the installation of the temperature sensor 6 based on the above-mentioned embodiments. A plurality of temperature sensors 6 may be provided inside the battery module 2 . A plurality of temperature sensors 6 are evenly distributed inside the battery module 2 for detecting the temperature of different parts of the battery module 2 .

Each temperature sensor 6 is directly connected to the side wall of the battery, and can directly detect the temperature of the battery at this position.

Setting a plurality of evenly distributed temperature sensors 6 can obtain the overall temperature of the battery module 2 more accurately.

Further, the single-chip microcomputer can judge and control the connection of the second pipeline 13 or the third pipeline 14 according to the battery temperature fed back by the multiple temperature sensors 6 . For example, the single-chip microcomputer can use the average value of the battery temperature detected by multiple temperature sensors 6 as the actual temperature of the battery module 2 to further determine and control the connection of the second pipeline 13 or the third pipeline 14 .

On the basis of the above embodiments, further, inside the battery module 2 , the gap between the pipe of the first pipeline 4 and any battery is filled with an insulating and heat-conducting medium.

This embodiment is based on the above-mentioned embodiments, and an insulating and heat-conducting medium is filled in the gap inside the battery module 2 .

Inside the battery module 2, a pipeline of a first pipeline 4 is provided between any two rows of batteries. There is a gap between the pipe and the batteries on both sides, which is the internal space 3 of the battery. Fill the gap 3 inside the battery with a thermally conductive and insulating medium, such as thermally conductive glue and other materials, to fill up the gap. The impact resistance between the battery module 2 and the first pipeline 4 can be improved, and the thermal conductivity and insulation can be ensured. The possibility of the battery module 2 sending a hazard can be reduced.

Further, the battery internal space 3 between two adjacent rows of batteries inside the battery module 2 is also filled with thermally conductive insulating material. The casing 1 can be provided outside the battery module 2 to form a seamless and sealed environment inside the battery module 2 . The impact resistance between the battery module 2 and the first pipeline 4 can be improved, and the thermal conductivity and insulation can be ensured. The possibility of the battery module 2 sending a hazard can be reduced.

The internal space 3 of the battery is the space inside the casing 1 of the battery module 2 .

On the basis of the above embodiments, further, the working medium in the first pipeline 4 , the second pipeline 13 and the third pipeline 14 includes: liquid metal.

This embodiment describes the working medium based on the above embodiments.

Liquid metals such as gallium indium, gallium indium tin and gallium indium tin zinc alloys are in a liquid state at room temperature, and some are even in a liquid state at low temperatures. Liquid metal can flow. Compared with traditional aqueous solutions, it has the characteristics of high boiling point, low freezing point, high thermal conductivity and strong thermal stability. The specific heat capacity is about 40 times that of water, and the manufacturing process does not require high temperature smelting. It is environmentally friendly and non-toxic. Suitable for use as a cooling medium.

Further, the first pumping device 11 and the second pumping device 9 can respectively adopt electromagnetic pumps. Liquid metal can be driven by a micro electromagnetic pump to reduce energy consumption.

In this embodiment, liquid metal is used as the working medium, but this is not limited, and the working medium may also be water or other substances.

On the basis of the above embodiments, further, the pipe material of the first pipeline 4 , the second pipeline 13 and the third pipeline 14 includes: copper pipe.

This embodiment describes the material of the pipeline based on the above embodiments. The pipelines of the first pipeline 4, the second pipeline 13 and the third management can adopt copper pipes, which are resistant to high temperature and have good thermal conductivity. But this is not limited.

On the basis of the above embodiments, further, an automotive battery thermal management system, which combines the temperature control system for adjusting the temperature of the battery module 2 with the automotive air-conditioning system, and uses the heat or cold of the air-conditioning system to heat the battery module 2. temperature control. By adopting the battery temperature control system based on exchanging heat with the automobile air conditioner heat exchanger, the energy consumption of the entire electric vehicle system can be reduced, and the economy and safety of the system can be improved. The heat emitted by the battery can be recycled, saving energy consumption.

The temperature sensor 6 is set in contact with the wall of the battery module 2 to sense the temperature of the battery module 2 and send an electronic signal to the single-chip microcomputer, which controls the operation of several electronic components of the system, so that the above-mentioned battery temperature control system operates normally.

The temperature control system is fully automatic control, the temperature sensor 6 is the signal sensing element of the system, and the single chip microcomputer is the "heart" of the temperature control system, which distributes system energy.

The working medium in the first pipeline 4 can perform forced convection heat exchange on the car battery to control the battery temperature and maintain the battery in its optimum working temperature zone.

The thermal management system of an automobile battery provided in this embodiment, that is, the battery temperature control system, performs heat management for the battery by exchanging heat with the automobile air conditioner, which can reduce the energy consumption of the entire automobile and improve the economy and safety of the electric automobile , not only can achieve effective heat dissipation and cooling for the battery, but also can better protect the car battery, prolong the service life of the TV, and increase the good experience of electric car users.

This embodiment provides a battery thermal management system. In the pure electric vehicle battery thermal management system, the battery is placed between pipelines whose working medium is liquid metal, and the temperature of the battery is controlled through the circulation of the liquid metal fluid. Keep the battery in the best working environment temperature range at all times.

A battery thermal management system provided in this embodiment can be used for pure electric vehicle batteries. The battery has a matrix arrangement, and the number of battery groups can be added according to actual needs to increase the capacity of the battery. The number of battery groups is not limited. Therefore, the first pipeline 4 of the thermal management system can also be increased with the increase of the battery modules 2 . It is ensured that there is a first pipeline 4 of the temperature control system in the middle of each group of battery modules 2 and finally converges on the main pipeline, that is, it gathers at the outlet and the inlet at both ends of the battery modules 2 .

A thermally conductive insulating medium with good thermal conductivity is filled between the first pipeline 4 and the battery module 2, and the internal gap of the battery module 2 is guaranteed to be filled with a thermally conductive insulating medium, so that the inside of the battery forms a seamless and sealed environment through the battery case 1 , so that there is a certain impact resistance between the battery module 2 and the pipeline of the temperature control system, and it is ensured that it has thermal conductivity and insulation. The risk factor of battery occurrence is reduced.

The temperature sensor 6 is used to sense the internal temperature of the battery. If the temperature of the battery is too high and is higher than its optimum working environment temperature range, the control center, that is, the single-chip microcomputer, issues an instruction, the first electric ball valve 10 is opened, the heat dissipation system is connected, and the first pumping device 11 to work. Its pumping flow is controlled by the single-chip microcomputer in the control center, and its flow rate is determined by the internal temperature of the battery. When the liquid metal is pumped to the first heat exchanger 12, it can conduct convective heat dissipation with the working medium in the air-conditioning evaporator, or can force convective heat dissipation with natural wind.

The temperature sensor 6 is used to feel the internal temperature of the battery. If the battery temperature is too low, lower than its optimum working environment temperature range, the control center, that is, the single-chip microcomputer, will issue an instruction, and the second pumping device 9 will start to work and communicate with the thermal system. Its pumping flow is controlled by the single-chip microcomputer in the control center, and its flow rate is determined by the internal temperature of the battery. When the liquid metal is pumped to the car heat exchanger, it can exchange heat with the heat-generating parts of the car, such as the air conditioner condenser, and the heat obtained is brought to the battery by the liquid metal to provide a good temperature environment.

The automotive battery thermal management system provided in this embodiment meets the theoretical design requirements, so it can be used in the temperature control system to ensure the stable operation of the system; secondly, the system is simple in principle and effective, and meets the prerequisites for the promotion of energy-saving application technology , under the premise of ensuring the stable operation of the device, the temperature control effect is good, which has a significant effect on increasing the travel number of pure electric vehicles; at the same time, the independent design and reasonable collocation have no effect on the operation of the original equipment, and are applicable to almost all working conditions .

Finally, the method of the present application is only a preferred implementation, and is not intended to limit the protection scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. a kind of automobile batteries heat management system, which is characterized in that including：Temperature sensor, the first check valve, the first heat exchange Device, microcontroller and the first pumping installations；The temperature sensor is connected with battery module, is set in the inside of the battery module The first pipeline is set, one end of first pipeline is connected with the import of the battery module, the other end of first pipeline It is connected with the outlet of the battery module, the second pipeline of setting outside the battery module, the two of second pipeline End is connected with the import and the outlet respectively, and first pumping installations, described is set gradually on second pipeline First Heat Exchanger and first check valve, the First Heat Exchanger are connected with automobile air-conditioning evaporator, the temperature sensor Output end be connected with the microcontroller, the microcontroller is connected with first pumping installations.

2. automobile batteries heat management system according to claim 1, which is characterized in that further include：Second check valve, second Heat exchanger and the second pumping installations；Between the import and the outlet, the external setting third pipeline of the battery module, The both ends of the third pipeline are connected with the import and the outlet respectively, and described the is set gradually on the third pipeline Two pumping installations, second heat exchanger and second check valve, second pumping installations are connected with the microcontroller.

3. automobile batteries heat management system according to claim 2, which is characterized in that second heat exchanger is empty with automobile Condenser is adjusted to be connected.

4. automobile batteries heat management system according to claim 2, which is characterized in that be provided on second pipeline One electrical ball valve, first electrical ball valve are located between first pumping installations and the outlet or the import；It is described Be provided with the second electrical ball valve on third pipeline, second electrical ball valve be located at second pumping installations and the outlet or Between the import；First electrical ball valve and second electrical ball valve are connected with the microcontroller respectively.

5. automobile batteries heat management system according to claim 2, which is characterized in that the output end of first check valve Close to the coupled outlet or the import；The output end of second check valve is close to the coupled outlet Or the import.

6. automobile batteries heat management system according to claim 1, which is characterized in that the battery inside the battery module Arranged in arrays, the multiple batteries to form a line are one group, and multigroup battery removably connects side by side, the pipe of first pipeline Road is uniformly arranged between arbitrary two groups of batteries.

7. automobile batteries heat management system according to claim 6, which is characterized in that be arranged inside the battery module Multiple temperature sensors, multiple temperature sensors are distributed in the battery module inner homogeneous, and each temperature Degree sensor is contacted with the side wall of a battery.

8. automobile batteries heat management system according to claim 6, which is characterized in that inside the battery module, institute It states in the gap between the pipeline and any battery of the first pipeline and fills insulated heat-conducting medium.

9. automobile batteries heat management system according to claim 2, which is characterized in that first pipeline, described second Working media in pipeline and the third pipeline includes：Liquid metal.

10. automobile batteries heat management system according to claim 2, which is characterized in that first pipeline, described second The pipe material of pipeline and the third pipeline includes：Copper pipe.