CN217606897U

CN217606897U - Power battery system and new forms of energy electric automobile

Info

Publication number: CN217606897U
Application number: CN202221241997.6U
Authority: CN
Inventors: 叶光保; 王磊; 刘建明; 杨东; 海滨; 王志超
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-10-18
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a power battery system, including water-cooling board and battery module, it holds to set up on the water-cooling board the storage tank of battery module has in the storage tank to be no less than two internal faces and sets up the heat conduction glue between the battery module. The utility model discloses a power battery system, according to the working method of thermal management system liquid cooling, increase the contact surface of water cooling board and battery module, can promote thermal management insulation performance and battery system thermal management efficiency; the effect of structure glue has increased the structural strength between water-cooling board and battery, also increases the structural strength between this battery module electricity core and the electricity core simultaneously. The utility model also discloses a new forms of energy electric automobile.

Description

Power battery system and new forms of energy electric automobile

Technical Field

The utility model belongs to the technical field of the new energy automobile, specifically speaking, the utility model relates to a power battery system and new forms of energy electric automobile.

Background

The existing new energy electric automobile adopts the following mode in a thermal management subsystem of a power battery system: there are no three classification modes of cold, air-cooled and liquid-cooled; according to the working mode of liquid cooling of the thermal management system, the main expression forms are two forms: the first is to divide the water cooling plate in the heat management system into pieces and form the whole power battery system cabin, and the second is to combine the water cooling plate in the heat management system and the bottom plate of the power battery cabin into a whole. The two modes have the common point that the bottom surface of the battery is in contact joint with a water cooling plate of a heat management system, the contact surface is conducted excessively by adopting a heat conducting pad, and the mode of the combination only forms contact of one surface, so that the heat management efficiency is low; when the water cooling plate in the heat management system is in a form of being formed by slicing and blocking, the fixing mode is as follows: the water cooling plate needs to be independently fixed at a cross beam at the bottom of the shell of the power battery system, and the structure inevitably occupies the space position of a fixed point of the module; when the water cooling plate of the thermal management system and the bottom plate of the power battery compartment are combined into a whole, the flatness of the bottom surface of the whole bottom plate of the power battery compartment is tested greatly, and great difficulty is brought forward in the later-stage production and use processes. According to the existing heat management liquid cooling system, the cooling liquid entering the battery system is a constant-current and constant-temperature control strategy, and the cooling liquid entering the battery system is cooled or heated at a fixed temperature value and a fixed flow rate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a power battery system, the purpose promotes battery system heat management efficiency.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: power battery system, including water-cooling board and battery module, set up on the water-cooling board and hold the storage tank of battery module has to be no less than two internal faces and sets up the heat-conducting glue between the battery module in the storage tank.

The containing groove is a rectangular groove, and heat-conducting glue is arranged between five inner wall surfaces in the containing groove and the pool module.

The water-cooling plate comprises a bottom supporting plate and a plurality of side plates arranged on the bottom supporting plate, cooling water channels are arranged in the bottom supporting plate where each inner wall face is located and the side plates, all the side plates are distributed around the outer side of the battery module, and the bottom supporting plate is located below the battery module.

The side plates are four, and the four side plates are arranged in parallel in pairs.

And a glue amount upper limiting groove is designed in the water cooling plate.

The water cooling plate and the battery module are installed in the inner cabin of the battery pack through a common bolt, and the water cooling plate and the battery module are provided with through holes for the bolt to pass through and the through holes in the water cooling plate are communicated with the through holes in the battery module.

The utility model also provides a new forms of energy electric automobile, include power battery system.

The utility model discloses a power battery system, according to the working method of thermal management system liquid cooling, increase the contact surface of water cooling board and battery module, can promote thermal management insulation performance and battery system thermal management efficiency; the effect of structure glue has increased the structural strength between water-cooling board and battery, also increases the structural strength between this battery module electricity core and the electricity core simultaneously.

Classification of thermal management temperature sensors: a temperature sensor of a water inlet and a water outlet of the battery system and a temperature sensor of a single independent water cooling plate; the traditional battery system is thermally managed to start or close a reference battery system water inlet and outlet temperature value of a temperature sensor; a single independent water cooling plate temperature sensor is added at present, the temperature difference or temperature rise between the independent water cooling plate battery modules is used as the condition for starting the independent water cooling plate battery modules to thermally manage different cooling liquid flow rates by comparing the temperature of the independent water cooling plate battery modules with the highest and lowest temperature points of the battery system.

The water cooling plate of the invention has the characteristics that: 1. the water cooling plate is provided with a temperature sensor, a corresponding clamping groove and heat conducting glue, and is attached to the battery module by utilizing the elasticity of the material; 2. the caliber of the water inlet and outlet of the water cooling plate of the single battery module can be adjusted, and the flow rate of the cooling liquid can be changed by adjusting the caliber of the single water cooling plate according to the constant flow of the battery system; 3. the heat management efficiency is improved through the change of the flow rate of the water cooling plate of the single battery module; 4. compensating and adjusting according to the temperature difference between the temperature of the cooling liquid provided by the whole vehicle and the temperature sensors of the water inlet and the water outlet of the battery system and the water cooling plate of the battery module; 5. in the service life cycle of the battery system, along with the increase of the difference between the single batteries of the battery system, the difference between the single batteries of the battery system is made up through heat management, and the battery module is used as a unit for adjustment to increase the service life of the battery.

Drawings

FIG. 1 is a schematic structural view of a water-cooled panel;

FIG. 2 is a front view of the water cooled panel;

FIG. 3 is a cross-sectional view of a water cooled plate;

fig. 4 is a schematic view illustrating the assembly of the battery module and the water-cooling plate;

fig. 5 is a schematic diagram of an internal module arrangement of the battery system;

the labels in the above figures are: 1. a battery module; 2. a cooling water channel; 3. a bottom pallet; 4. a first side plate; 5. a second side plate; 6. a third side plate; 7. a fourth side plate; 8. a water inlet; 9. a water outlet; 10. a fixing hole; 11. a limiting groove for limiting the glue amount; 12. an end plate; 13. a through hole; 14. a stringer; 15. a cross beam; 16. a battery pack inner compartment; 17. the upper surface of the bottom plate.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

As shown in fig. 1 to 5, the utility model provides a power battery system, including water-cooling board and battery module 1, set up cooling water course 3 in the water-cooling board, set up the storage tank that holds battery module 1 on the water-cooling board, have in the storage tank to be no less than two internal faces and set up the heat conduction glue between the battery module 1.

Specifically, as shown in fig. 1 to 5, the receiving groove is a rectangular groove formed at the bottom of the water-cooling plate, and matches with the shape of the battery module 1, and heat-conducting glue is disposed between five inner wall surfaces in the receiving groove and the battery module. The water cooling plate with the sunken square groove forms a wrapping structural form for the battery module 1 from a structural angle. The wrapping structural form has the advantage of thermal management, so that the thermal management and heat preservation performance can be improved, and the thermal management energy efficiency of the battery system can be improved; the wrapping structure also has the advantage of structural strength, so that the water cooling plate and the battery module 1 form a whole, and the internal stress of the battery module 1 is reduced.

As shown in fig. 1 to 4, the water-cooling plate includes a bottom support plate 3 and a plurality of side plates disposed on the bottom support plate 3, the bottom support plate 3 where each inner wall surface is located and the inside of the side plates are provided with cooling water channels 3, all the side plates are distributed around the outer side of the battery module 1, and the bottom support plate 3 is located below the battery module 1. The side plates are four, and the four side plates are arranged in parallel. The four side plates are respectively a first side plate 4, a second side plate 5, a third side plate 6 and a fourth side plate 7, the first side plate 4, the second side plate 5, the third side plate 6 and the fourth side plate 7 are vertically arranged on the bottom supporting plate 3, the first side plate 4 and the second side plate 5 are oppositely arranged and parallel to each other, the third side plate 6 and the fourth side plate 7 are oppositely arranged and parallel to each other, the first side plate 4 and the second side plate 5 are perpendicular to the third side plate 6 and the fourth side plate 7, the first side plate 4, the second side plate 5, the third side plate 6 and the fourth side plate 7 are distributed around the outer side of the battery module 1, heat-conducting glue is arranged between the top surface of the bottom supporting plate 3 and the bottom surface of the battery module 1, heat-conducting glue is arranged between the inner wall surfaces of the first side plate 4, the second side plate 5, the third side plate 6 and the fourth side plate 7, the bottom supporting plate 3, the inner wall surfaces of the first side plate 4, the second side plate 5, the third side plate 6 and the fourth side plate 7 surround the accommodating groove, and five inner wall surfaces of the bottom supporting plate 3, the first side plate 4, the third side plate 5, the fourth side plate 7. According to the working mode of liquid cooling of the heat management system, one surface of the water cooling plate, which is in contact with the battery, is lifted to be in contact with five surfaces, so that the heat preservation and the conduction energy efficiency of heat management are effectively improved. And at the inside even rubber coating of storage tank, the storage tank has formed a parcel form to battery module 1, and the heat-conducting glue has formed an adhesion effect between electric core and the electric core to battery module 1, and the heat-conducting glue forms an adhesion effect to between 1 bottom of battery module and the water-cooling board to can promote structural strength.

As shown in fig. 1 to 4, a cooling water channel 3 is provided inside the bottom support plate 3, the first side plate 4, the second side plate 5, the third side plate 6 and the fourth side plate 7, the cooling water channel 3 provided in the bottom support plate 3 is communicated with the cooling water channel 3 provided inside the first side plate 4, the second side plate 5, the third side plate 6 and the fourth side plate 7, a water inlet 8 is provided on the second side plate 5, a water outlet 9 is provided on the first side plate 4, and the water inlet 8 and the water outlet 9 are communicated with the cooling water channel 3. Limiting groove 11 on the water-cooling board internal design has the glue volume, and limiting groove 11 is used for injecing the rubber coating volume of heat-conducting glue on the glue volume, adopts the heat-conducting glue to make battery module 1 fixed more obeying, and the heat-conducting glue increases and reaches the effect, lets water-cooling board and battery module 1 form the soft contact.

As shown in fig. 1 to 5, the water-cooling plate and the battery module 1 are mounted in the inner compartment of the battery pack by a common bolt, the water-cooling plate and the battery module 1 have a through hole through which the bolt passes, and the through hole on the water-cooling plate communicates with the through hole on the battery module 1. Set up fixed orifices 10 on first curb plate 4 and the second curb plate 5 of water-cooling board, fixed orifices 10 also let the through-hole that the bolt passed, set up the through-hole 13 that lets the bolt pass on two end plates 12 of battery module 1, during the assembly, end plate 12 that battery module 1 both ends set up is placed respectively on first curb plate 4 and second curb plate 5, through-hole 13 on two end plates 12 aligns with fixed orifices 10 on first curb plate 4 and the second curb plate 5 respectively, then can pass through the bolt fastening on the casing of battery package, consequently, water-cooling board and the same fixed point of battery module 1, a bolt-up of common use, manufacturing cost has been practiced thrift to the use quantity that reduces fixing bolt, the trompil quantity that has reduced the design is practiced thrift design development cost. In the production and assembly process of the power battery system, the water cooling plate and the battery module 1 are assembled together at the same time, so that the production process beat is optimized.

The utility model also provides a new forms of energy electric automobile, power battery system of including. The specific structure of the power battery system can refer to fig. 1 to 5, and is not described herein again. Because the utility model discloses a new forms of energy electric automobile includes the power battery system in the above-mentioned embodiment, so it has all advantages of above-mentioned power battery system.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims

1. Power battery system, including water-cooling board and battery module, its characterized in that: the water cooling plate is provided with a containing groove for containing the battery module, and heat conducting glue is arranged between at least two inner wall surfaces and the battery module in the containing groove.

2. The power battery system of claim 1, wherein: the containing groove is a rectangular groove, and heat-conducting glue is arranged between five inner wall surfaces in the containing groove and the pool module.

3. The power cell system of claim 1 or 2, wherein: the water-cooling plate comprises a bottom supporting plate and a plurality of side plates arranged on the bottom supporting plate, cooling water channels are arranged in the bottom supporting plate where the inner wall surfaces are located and the side plates, all the side plates are distributed around the outer side of the battery module, and the bottom supporting plate is located below the battery module.

4. The power battery system of claim 3, wherein: the side plates are four, and the four side plates are arranged in parallel in pairs.

5. The power cell system of claim 1 or 2, wherein: and a glue amount upper limiting groove is designed in the water cooling plate.

6. The power cell system of claim 1 or 2, wherein: the water cooling plate and the battery module are installed in the inner cabin of the battery pack through a common bolt, and the water cooling plate and the battery module are provided with through holes for the bolt to pass through and the through holes in the water cooling plate are communicated with the through holes in the battery module.

7. New forms of energy electric automobile, its characterized in that: comprising a power cell system according to any of claims 1 to 6.