CN216958323U

CN216958323U - Compact does not have module power battery system

Info

Publication number: CN216958323U
Application number: CN202123065678.2U
Authority: CN
Inventors: 张广阵; 周映双; 黄介
Original assignee: Yibin Cowin Auto Co Ltd
Current assignee: Yibin Cowin Auto Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-07-12
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses a compact type module-free power battery system, which belongs to the technical field of power battery systems and comprises a lower box body and an upper cover which are fixedly connected, wherein the lower box body is a liquid cooling integrated box body, a high-voltage component, a battery management system and a battery cell module are arranged between the lower box body and the upper cover, the battery cell modules at one end of the lower box body are arranged in a stacked mode, and the upper ends of the battery cell modules or adjacent battery cells in the stacked mode are connected with the lower box body through liquid cooling pipelines.

Description

Compact does not have module power battery system

Technical Field

The utility model relates to the technical field of power battery systems, in particular to a compact type module-free power battery system.

Background

With the continuous popularization of new energy automobiles, people have higher and higher requirements on the endurance of the new energy automobiles, and factors influencing the endurance of the new energy automobiles are many, wherein the most important factors are volumetric specific energy density and mass specific energy density.

The existing power battery system is generally composed of a battery cell level to a module level, and a battery box body structure is arranged from the module level to the battery cell level, so that the battery cell is subjected to twice integration process, and module structural member materials are required to be added, so that the process is complex, the weight is heavy, the cost is high, and meanwhile, the distance from the battery cell to a heat exchange interface of a liquid cooling system is increased, so that the volume ratio and the mass ratio energy density of the whole power battery system are small, and the improvement of endurance mileage is not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a compact type module-free power battery system which adopts a module-free structure, improves the cooling and heat dissipation effects, has a more compact overall structure through reasonable arrangement of internal structures, and increases the volume ratio and the mass ratio energy density.

In order to achieve the purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows: compact does not have module power battery system, including fixed lower box and the upper cover that links to each other, the box sets up to liquid cooling integrated form box down, be provided with high-pressure subassembly, battery management system and electric core module down between box and the upper cover, the electric core module range upon range of arrangement of box one end down, and range upon range of upper end of the electric core module of arranging or adjacent electric core between through the liquid cooling pipeline with the box links to each other down.

The lower box body comprises a bottom plate, the bottom end of the bottom plate is connected with a cover plate in a sealing mode, and a liquid cooling cavity comprising a liquid cooling runner is formed between the bottom plate and the cover plate in a matched mode.

One end of the lower box body is connected with a liquid cooling pipeline connected with the liquid cooling cavity, and the liquid cooling pipeline surrounds the upper end of the battery cell module or the adjacent battery cells arranged in a stacked mode.

The lower box body is provided with a plurality of partition plates for positioning the battery cell module at intervals along the length direction of the lower box body.

The high-voltage assembly is in including setting up the high-voltage distribution box of box one end down, the high-voltage distribution box through two sets of high-voltage copper bars of box both sides down with electricity core module electricity is connected in order to supply power outward.

The battery management system is arranged at one end of the lower box body, and the battery management system is electrically connected with the battery cell module through a low-voltage wire harness on one side of the lower box body so as to collect signals.

The lower box body is provided with annular sealing foam along the circumferential direction of the lower box body and is connected with the upper cover in a sealing mode through the annular sealing foam.

The outer surface of the battery cell module is coated with heat preservation cotton.

The beneficial effects of the utility model are:

1. according to the utility model, the battery cell is directly integrated into the battery box by adopting a non-module structure, so that the process of integrating the battery cell into the module is omitted, the assembly error caused by the integration in the middle of the module is omitted, the process is simplified, the cost is reduced, and the overall weight is reduced due to the fact that materials such as a module shell, a module end plate and heat-conducting structural adhesive are omitted; by arranging the liquid cooling integrated box body, a liquid cooling pipeline does not need to be additionally arranged at the bottom of the lower box body, so that the weight and the volume of the power battery system are further reduced, and the cooling and radiating effects are improved; through the range upon range of the battery cell module that will descend box one end and arrange, make the structure compacter, reduced transversely to occupy the volume in the limited space of automobile body, wholly arrange volume ratio, the mass ratio energy density that has increased power battery system, be favorable to promoting power battery system's continuation of the journey mileage.

2. According to the utility model, the high-voltage copper bars for connecting the high-voltage distribution box and the battery cell module are arranged on two sides of the lower box body, and the low-voltage wire harness for connecting the battery management system and the battery cell module is arranged on one side of the lower box body, so that the connection structure is more orderly, and the later maintenance is more convenient.

In conclusion, the utility model adopts a non-modular structure, improves the cooling and heat dissipation effect, has more compact integral structure by reasonably arranging the internal structure, increases the volume ratio and the mass ratio energy density, and is beneficial to improving the endurance mileage of the power battery system.

Drawings

The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is an exploded view of the present invention;

the labels in the above figures are: 1. the battery management system comprises a lower box body, 2 an upper cover, 3 a battery management system, 4 an electric core module, 5 a liquid cooling pipeline, 6 a partition plate, 7 a high-voltage distribution box, 8 a high-voltage copper bar, 9 a low-voltage wire harness, 10 annular sealing foam and 11 heat insulation cotton.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific implementation scheme of the utility model is as follows: as shown in fig. 1 to 3, a compact module-free power battery system comprises a lower box body 1 and an upper cover 2 which are fixedly connected, wherein the lower box body 1 is a liquid-cooled integrated box body, a high-voltage component, a battery management system 3 and a battery cell module 4 are arranged between the lower box body 1 and the upper cover 2, a battery cell is directly integrated into the battery box, the process of integrating the battery cell into the module is omitted, the assembly error caused by module middle integration is omitted, the process is simplified, the cost is reduced, and the overall weight is reduced due to the fact that materials such as a module shell, a module end plate and heat-conducting structural adhesive are omitted; the battery core module 4 of box 1 one end is range upon range of to be arranged down, makes the structure compacter, has reduced transversely to occupy the volume in the limited space of automobile body, and links to each other with box 1 down through liquid cooling pipeline 5 between the upper end of the battery core module 4 of range upon range of arrangement or the adjacent electric core, has guaranteed that battery core module 4 can carry out comprehensive cooling heat dissipation.

Specifically, lower box 1 wherein includes the bottom plate, and the bottom sealing connection of bottom plate has the apron, cooperatees between bottom plate and the apron and forms the liquid cooling chamber including the liquid cooling runner, and the protruding muscle is strengthened to the inside setting of bottom plate, closes the back with apron sealing cover, strengthens protruding muscle and apron inconsistent to form the liquid cooling runner, wherein the liquid cooling runner can set to snakelike passageway. According to the utility model, the liquid cooling integrated box body is arranged, and the liquid cooling pipeline 5 is not required to be additionally arranged at the bottom of the lower box body 1, so that the weight and the volume of the power battery system are further reduced, and the cooling and heat dissipation effects are improved.

Specifically, the one end of lower box 1 wherein is connected with the liquid cooling pipeline 5 that links to each other with the liquid cooling chamber, and liquid cooling pipeline 5 encircles between the upper end of the electric core module 4 of range upon range of arrangement or adjacent electric core, has guaranteed that electric core module 4 can carry out comprehensive cooling heat dissipation.

Specifically, lower box 1 is provided with a plurality of division boards 6 with electric core module 4 location along its length direction interval, because electric core is difficult for fixing, produces mar and pit easily, can effectively support and protect electric core through division board 6 that sets up, avoids electric core module 4 to take place to damage when the equipment.

Specifically, the high-voltage assembly comprises a high-voltage distribution box 7 arranged at one end of the lower box body 1, and the high-voltage distribution box 7 is electrically connected with the battery cell module 4 through two groups of high-voltage copper bars 8 on two sides of the lower box body 1 to supply power to the outside; wherein battery management system 3 sets up the one end of box 1 under, and battery management system 3 is connected with the collection signal through the low voltage pencil 9 of box 1 one side down and 4 electricity of electric core module, because set up the insulating layer outside the high-pressure copper bar 8 and can not take place to influence each other between the low voltage pencil 9, with high pressure and low voltage interconnecting link setting box 1 both sides under, make connection structure more neat, make the later maintenance more convenient.

In addition, the lower box body 1 is provided with annular sealing foam 10 along the circumferential direction and is connected with the upper cover 2 in a sealing way through the annular sealing foam 10, so that the connection tightness of the lower box body 1 and the upper cover 2 is improved, and the service life of the power battery system is prolonged; the cladding of 4 surfaces of electric core module has heat preservation cotton 11, has played the thermal-insulated effect of heat preservation, has avoided electric core module 4 to generate heat at the during operation to the influence of peripheral high pressure and low pressure module.

While the foregoing is directed to the principles of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. A compact type module-free power battery system is characterized by comprising a lower box body and an upper cover which are fixedly connected, wherein the lower box body is a liquid cooling integrated box body, a high-voltage assembly, a battery management system and a battery cell module are arranged between the lower box body and the upper cover, the battery cell modules at one end of the lower box body are arranged in a stacked manner, and the upper ends of the battery cell modules arranged in the stacked manner or adjacent battery cells are connected with the lower box body through liquid cooling pipelines;

the lower box body comprises a bottom plate, the bottom end of the bottom plate is hermetically connected with a cover plate, and a liquid cooling cavity comprising a liquid cooling runner is formed by matching the bottom plate and the cover plate; the reinforcing convex rib is arranged inside the bottom plate, and after the cover plate is sealed and covered, the reinforcing convex rib is abutted to the cover plate, so that a liquid cooling flow channel is formed, and the liquid cooling flow channel can be set into a snake-shaped channel.

2. The compact, non-modular power cell system of claim 1, wherein: one end of the lower box body is connected with a liquid cooling pipeline connected with the liquid cooling cavity, and the liquid cooling pipeline surrounds the upper end of the battery cell module or the adjacent battery cells arranged in a stacked mode.

3. The compact, non-modular power cell system of claim 1, wherein: the lower box body is provided with a plurality of partition plates for positioning the battery cell module at intervals along the length direction of the lower box body.

4. The compact, non-modular power cell system of claim 1, wherein: the high-voltage assembly is in including setting up the high-voltage distribution box of box one end down, the high-voltage distribution box through two sets of high-voltage copper bars of box both sides down with electricity core module electricity is connected in order to supply power outward.

5. The compact, non-modular power cell system of claim 1, wherein: the battery management system is arranged at one end of the lower box body, and the battery management system is electrically connected with the battery cell module through a low-voltage wire harness on one side of the lower box body so as to collect signals.

6. The compact, non-modular power cell system of claim 1, wherein: the lower box body is provided with annular sealing foam along the circumferential direction of the lower box body and is connected with the upper cover in a sealing way through the annular sealing foam.

7. The compact, non-modular power cell system of claim 1, wherein: the outer surface of the battery cell module is coated with heat preservation cotton.