CN220042021U

CN220042021U - Device for managing temperature of power battery

Info

Publication number: CN220042021U
Application number: CN202321573718.0U
Authority: CN
Inventors: 张玉伟; 陈萌
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-11-17
Anticipated expiration: 2033-06-20

Abstract

The utility model discloses a device for managing the temperature of a power battery, which comprises the power battery, a shell, a heat conducting layer, a temperature sensor, a fixed rod, a cooling liquid port, a heat exchange bent pipe and a heat exchange structure, wherein a plurality of uniformly distributed power batteries are inserted into the shell, the heat conducting layer is contacted with the outer side of the power battery in the shell, the heat conducting layer is fixed in the shell, cooling liquid for cooling the power battery is arranged between the heat conducting layer and the shell, the device is provided with the temperature sensor and the heat exchange structure, different values of the temperature and the rated temperature of the power battery are detected through the temperature sensor, and a liquid exchange pump and a refrigerator are started to circularly cool the power battery, so that the temperature of the power battery can be timely detected, the explosion risk of the power battery is reduced, and the intelligent temperature management degree is increased.

Description

Device for managing temperature of power battery

Technical Field

The utility model relates to the technical field of power battery thermal management, in particular to a device for managing the temperature of a power battery.

Background

The high-speed development of new energy automobiles drives the quick development of the power battery industry, however, the power battery is sensitive to temperature, the SOC rate of the power battery is fast in a low-temperature environment, the power battery needs to operate with limited power in a high-temperature environment, the working efficiency is reduced, and the service life of the power battery is also reduced after the power battery is in a high-temperature environment for a long time. In order to ensure that the power cell operates in a suitable temperature range, the power cell needs to be subjected to necessary thermal management.

The patent of the utility model with the application number of CN202221112201.7 and the name of device for managing the temperature of power batteries solves the problem that the service life of a battery pack is relatively short. The significant temperature gradient of lithium ion batteries in operation and their high temperature sensitivity characteristics result in extremely uneven electrochemical local reaction rate distribution, which is one of the main causes of premature aging of the batteries. In addition, the potential safety hazard caused by thermal runaway of the battery of the electric automobile is still a technical problem that consumers do not want to accept the key place of the electric automobile, but the patent still has the following problems when in specific use:

1. because one end of the power battery is in direct contact with the cooling liquid, the cooling liquid can flow into the power batteries, so that the risk of short circuit of the power batteries is increased, and the service life of the power batteries is shortened.

2. Because the heat exchange tube is not provided with fixed knot at the lower extreme of coolant liquid, when the car was gone, can make the heat exchange tube take place to rock, take place cracked risk even to only carry out temperature management in one side of power battery, can reduce the effect to power battery heat transfer, thereby can increase the risk that power battery takes place the explosion.

3. The device is not provided with temperature sensor, and the heat exchange structure is not started after the power battery exceeds the rated temperature possibly, so that the intelligent temperature management degree is reduced.

Therefore, it is necessary to design a device for managing the temperature of the power battery to solve the above-mentioned problems.

Disclosure of Invention

The present utility model is directed to a device for managing the temperature of a power battery, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a device for managing power battery temperature, includes power battery, still includes casing, heat conduction layer, temperature sensor, dead lever, coolant liquid mouth, heat exchange return bend and heat exchange structure, the inside of casing has inserted a plurality of evenly distributed's power battery, the outside contact of power battery in the casing has the heat conduction layer, the heat conduction layer is fixed in the casing, be equipped with the coolant liquid that is used for cooling power battery between heat conduction layer and the casing, the coolant liquid lets in there is the heat exchange return bend, the equal fixed connection dead lever in lower extreme both sides of heat exchange return bend, the one end fixed connection casing of keeping away from the heat exchange return bend of dead lever, the upper end of heat exchange return bend is connected with heat exchange structure, heat exchange structure fixed connection is in one side of casing, the upper end of casing and heat conduction layer all hasp connection end cover, the upper end both sides of end cover all are equipped with the coolant liquid mouth that is used for changing the coolant liquid, the both ends inside being close to the power battery of end cover all are equipped with the temperature sensor that is used for controlling heat exchange structure.

Preferably, the heat exchange structure comprises a fixed plate, the lower extreme fixed connection connecting rod of fixed plate, the one end fixed connection casing of keeping away from the fixed plate of connecting rod, be equipped with the refrigerator in the fixed plate, it has the connecting pipe to let in the refrigerator, the one end of connecting pipe lets in has the water inlet, and the other end lets in has the delivery port, the water inlet all lets in the end cover with the one end of keeping away from the fixed plate of delivery port and with heat exchange return bend head and tail interface connection.

Preferably, the heat conducting layer has a waterproof function.

Preferably, a stop valve is arranged in the cooling liquid port.

Preferably, a liquid exchange pump is arranged in the heat exchange bent pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device is equipped with temperature sensor and heat exchange structure, detects the different numerical values of power battery temperature and rated temperature through temperature sensor to open the coolant pump and refrigerating ware and circulate the cooling to power battery, thereby can in time detect power battery's temperature and reduce power battery's risk of explosion, increase intelligent temperature management degree.

2. The device is equipped with the heat conduction layer, can prevent that the coolant from flowing into a plurality of power battery in, avoids a plurality of power battery to take place the risk of short circuit, prolongs power battery's life.

3. The device is equipped with the dead lever, when the car is traveling, the heat exchange tube can not take place to rock, cracked risk, extension heat exchange tube's life.

4. The device carries out temperature management to the power battery through a plurality of directions, increases the effect to the power battery heat transfer to further reduce the risk that the power battery explodes.

Drawings

FIG. 1 is a front view of an apparatus for managing the temperature of a power cell according to the present utility model;

FIG. 2 is a front cross-sectional view of an apparatus for managing the temperature of a power cell according to the present utility model;

FIG. 3 is a view from the direction A of FIG. 1;

fig. 4 is a cross-sectional view at B-B of fig. 3.

In the figure: 1. a housing; 2. an end cap; 3. a power battery; 4. a cooling liquid port; 5. a water inlet; 6. a cooling liquid; 7. a fixed rod; 8. a heat exchange elbow; 9. a heat conducting layer; 10. a temperature sensor; 11. a water outlet; 12. a fixing plate; 13. a connecting rod; 14. a refrigerator; 15. and (5) connecting pipes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a device for managing power battery temperature, including power battery 3, still include casing 1, heat conduction layer 9, temperature sensor 10, dead lever 7, coolant liquid mouth 4, heat exchange return bend 8 and heat exchange structure, a plurality of evenly distributed's power battery 3 has been inserted to the inside of casing 1, the outside contact of power battery 3 in casing 1 has heat conduction layer 9, heat conduction layer 9 fixes in casing 1, be equipped with the coolant liquid 6 that is used for cooling power battery 3 between heat conduction layer 9 and the casing 1, coolant liquid 6 lets in heat exchange return bend 8, the equal fixed connection dead lever 7 in lower extreme both sides of heat exchange return bend 8, the one end fixed connection casing 1 of keeping away from heat exchange return bend 8 of dead lever 7, heat exchange return bend 8's upper end is connected with heat exchange structure, heat exchange structure fixed connection is in one side of casing 1, the upper end of casing 1 and heat conduction layer 9 all hasp connection end cover 2, the upper end both sides of end cover 2 all are equipped with the coolant liquid mouth 4 that is used for changing coolant liquid 6, the both ends inside that are close to power battery 3 of end cover 2 all are equipped with the temperature sensor 10 that is used for controlling heat exchange structure.

The heat exchange structure comprises a fixed plate 12, a connecting rod 13 is fixedly connected to the lower end of the fixed plate 12, one end, far away from the fixed plate 12, of the connecting rod 13 is fixedly connected with a shell 1, a refrigerator 14 is arranged in the fixed plate 12, a connecting pipe 15 is introduced into the refrigerator 14, one end of the connecting pipe 15 is introduced with a water inlet 5, the other end of the connecting pipe is introduced with a water outlet 11, the water inlet 5 and the water outlet 11 are both introduced into an end cover 2 and are connected with the head-tail interface of a heat exchange bent pipe 8 at one end far away from the fixed plate 12, a temperature sensor 10 can start a liquid exchange pump and the refrigerator 14 to carry out reciprocating circulation and continuous refrigeration on water in the heat exchange bent pipe 8, cooling liquid 6 is cooled after the heat exchange bent pipe 8 is cooled, a heat conducting layer 9 is cooled, and therefore the temperature of the power battery 3 is controlled, and the heat exchange structure function is completed.

The heat conduction layer 9 has a waterproof function, so that cooling liquid can be prevented from entering the power battery 3 through the heat conduction layer 9, the phenomenon of short circuit of the power battery can be avoided, and the service life of the power battery 3 is prolonged.

The cooling liquid port 4 is internally provided with a stop valve, so that the cooling liquid 6 can be replaced, and the cooling liquid 6 can be prevented from leaking out during working.

The heat exchange bent pipe 8 is internally provided with a liquid exchange pump which can provide power for water circulation and is beneficial to managing the temperature of the power battery 3.

The working principle of the utility model is as follows:

when the temperature of the power battery 3 rises above the rated temperature, the temperature sensor 10 starts the liquid exchange pump and the refrigerator 14 to carry out reciprocating circulation on water in the heat exchange bent pipe 8 and continuously refrigerates, the cooling liquid 6 is cooled after the heat exchange bent pipe 8 is cooled, the heat conduction layer 9 is cooled by the cooling liquid 6 to carry out temperature management on the power battery 3, the heat exchange structure function is completed, and the function of a device for managing the temperature of the power battery is completed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An apparatus for managing the temperature of a power battery, comprising a power battery (3), characterized in that: still include casing (1), heat conduction layer (9), temperature sensor (10), dead lever (7), coolant liquid mouth (4), heat transfer return bend (8) and heat exchange structure, the inside of casing (1) has inserted power battery (3) of a plurality of evenly distributed, the outside contact in casing (1) of power battery (3) has heat conduction layer (9), heat conduction layer (9) are fixed in casing (1), be equipped with between heat conduction layer (9) and casing (1) and be used for cooling coolant liquid (6) for power battery (3) cooling, coolant liquid (6) lets in has heat exchange return bend (8), the equal fixed connection dead lever (7) in lower extreme both sides of heat exchange return bend (8), the one end fixed connection casing (1) of keeping away from heat exchange return bend (8) of dead lever (7), the upper end of heat exchange return bend (8) is connected with heat exchange structure, heat exchange structure fixed connection is in one side of casing (1), the upper end of casing (1) and layer (9) is all locked and is connected with end cover (2), upper end that is equipped with heat exchange return bend (6) is used for cooling both sides (4), the inside of both ends that are close to power battery (3) of end cover (2) all are equipped with temperature sensor (10) that are used for controlling heat transfer structure.

2. An apparatus for managing power cell temperature according to claim 1, wherein: the heat exchange structure comprises a fixed plate (12), a connecting rod (13) is fixedly connected to the lower end of the fixed plate (12), one end, far away from the fixed plate (12), of the connecting rod (13) is fixedly connected with a shell (1), a refrigerator (14) is arranged in the fixed plate (12), a connecting pipe (15) is introduced into the refrigerator (14), a water inlet (5) is introduced into one end of the connecting pipe (15), a water outlet (11) is introduced into the other end of the connecting pipe, and the water inlet (5) and one end, far away from the fixed plate (12), of the water outlet (11) are both introduced into an end cover (2) and are connected with a head-tail interface of a heat exchange bent pipe (8).

3. An apparatus for managing power cell temperature according to claim 2, wherein: the heat conducting layer (9) has a waterproof function.

4. A device for managing the temperature of a power cell as claimed in claim 3, wherein: a stop valve is arranged in the cooling liquid port (4).

5. An apparatus for managing power cell temperature according to claim 4, wherein: a liquid exchange pump is arranged in the heat exchange bent pipe (8).