CN216720059U

CN216720059U - Heat exchange power battery system with built-in independent liquid cooling pipeline

Info

Publication number: CN216720059U
Application number: CN202122932871.5U
Authority: CN
Inventors: 邵明顶; 杨明
Original assignee: Wanxiang A123 Systems Asia Co Ltd
Current assignee: Wanxiang A123 Systems Asia Co Ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-06-10
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a heat exchange power battery system with a built-in independent liquid cooling pipeline, which comprises an upper cover component, an electric core component, a liquid cooling pipeline component and a lower shell, wherein the liquid cooling pipeline component is welded in a cavity of the lower shell; the electric core assembly is assembled with the lower shell into a whole by being arranged in the liquid cooling pipeline assembly; an upper cover component is arranged at the upper port of the lower shell, and a sealing ring is sleeved on the upper cover component; the upper cover component is fixedly connected with the lower shell through bolts arranged at four end corners. The electric core assembly can always work at the most suitable temperature through the added liquid cooling pipeline assembly, so that the service life of the electric core assembly is prolonged, and the safe use of the electric core assembly is ensured; secondly, the banding clearance of the battery core subassembly is filled to the size of liquid cooling pipeline subassembly, and the liquid cooling pipeline almost zero clearance contact battery core subassembly simultaneously only needs to fill a small amount of heat conduction glue and just can exert heat exchange function, saves the higher heat conduction glue of price, and is with low costs, effectual.

Description

Heat exchange power battery system with built-in independent liquid cooling pipeline

Technical Field

The utility model relates to the technical field of batteries, in particular to a heat exchange power battery system with an internal independent liquid cooling pipeline.

Background

In a power battery system, the manifold refers to: the plurality of thin pipelines gather the thicker pipeline. Cell banding refers to: the soft-packaged electrical core is formed by wrapping an upper aluminum-plastic film and a lower aluminum-plastic film, and the aluminum-plastic film edge sealing treatment can be carried out at the joint of the aluminum-plastic films all around to prevent the electrolyte from flowing out.

The scheme of the existing low-voltage power battery system has no liquid cold and heat exchange system, and the existing low-voltage power battery system is naturally cooled or air-cooled and has the following defects:

1. the existing low-voltage power battery system scheme has no cooling device, cannot be used at the optimum application temperature of the battery cell, has the defect of short service life, and can not dissipate heat in time when the temperature is higher, thus easily causing thermal runaway; when the temperature is lower, the use easily makes the inside short circuit of electricity core, has the risk of taking place the conflagration.

2. When no built-in liquid cooling pipeline exists, the battery cell edge sealing at the two sides and the bottom of the battery cell occupies a large space, a large amount of heat-conducting glue is needed to fill the gap, so that the heat inside the battery cell is transferred to the aluminum shell for heat dissipation, and the heat conductivity coefficient of the heat-conducting glue is too low compared with that of the aluminum shell, so that the heat conduction effect is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heat exchange power battery system with a built-in independent liquid cooling pipeline, which can ensure that a battery cell always works at the most suitable temperature by adding a liquid cooling system, prolong the service life of the battery cell and ensure the safe use of the battery cell; liquid cooling pipeline size is filled electric core banding clearance, and the almost zero clearance contact electric core body of liquid cooling pipeline only needs to fill a small amount of heat conduction and glues just can exert heat exchange function simultaneously, saves the higher heat conduction of unit price and glues, and is with low costs, effectual to solve the problem that proposes in the above-mentioned background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a heat exchange power battery system with built-in independent liquid cooling pipelines comprises an upper cover component, an electric core component, a liquid cooling pipeline component and a lower shell, wherein the liquid cooling pipeline component is welded in a cavity of the lower shell; the electric core assembly is assembled with the lower shell into a whole by being arranged in the liquid cooling pipeline assembly; an upper cover assembly is arranged at the upper port of the lower shell, and a sealing ring is sleeved on the upper cover assembly; the upper cover component is fixedly connected with the lower shell through bolts arranged at four end corners.

Preferably, the lower shell is formed by welding an aluminum shell and a bottom plate, bolt fixing holes matched with bolts are formed in four end corners of the upper end of the aluminum shell, and a battery pack mounting beam for fixing a battery pack is arranged in the aluminum shell; the base plate is provided with a groove for embedding the liquid cooling pipeline assembly, and the two sides of the groove are provided with convex ribs for reinforcing and supporting the electric core assembly.

Preferably, the liquid cooling pipeline assembly is formed by welding a plurality of oval flat pipes, collecting pipes and pipeline joints.

Preferably, the upper cover component is provided with a BMS, a relay, a total anode and cathode output end, a low-voltage communication port and a vent valve.

Preferably, the assembly gap between the liquid cooling pipeline assembly and the lower shell is filled with heat conducting glue.

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

1. this built-in independent liquid cooling pipeline heat exchange power battery system, the liquid cooling pipeline that sets up be the independent return circuit, and again with the aluminum hull welding together, save promptly and install fixed pipeline alone, do not influence aluminum hull welded seal again, comparatively safety.

2. This built-in independent liquid cooling pipeline heat exchange power battery system combines the ingenious of liquid cooling pipeline and electric core subassembly for the liquid cooling pipeline zero clearance pastes tight electric core body, full play heat exchange function reduces the use amount of heat-conducting glue simultaneously, reduce cost under the condition of satisfying the function.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a schematic view of the lower housing of the present invention;

FIG. 3 is a schematic diagram of a liquid cooling line assembly according to the present invention;

FIG. 4 is a schematic view of the internal structure of the present invention;

fig. 5 is a partial top view of the interior of the present invention.

In the figure: 1. a bolt; 2. an upper cover assembly; 3. a seal ring; 4. an electrical core assembly; 5. a liquid cooling pipe assembly; 501. an oval flat tube; 502. a header pipe; 503. a pipe joint; 6. a lower housing; 601. an aluminum shell; 602. a base plate; 603. a bolt fixing hole; 604. a battery pack mounting beam; 605. a groove; 606. and (5) convex ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a heat exchange power battery system with a built-in independent liquid cooling pipeline comprises an upper cover assembly 2, a battery cell assembly 4, a liquid cooling pipeline assembly 5 and a lower shell 6, wherein the liquid cooling pipeline assembly 5 is welded in a cavity of the lower shell 6; the electric core assembly 4 is assembled with the lower shell 6 into a whole by being arranged in the liquid cooling pipeline assembly 5; an upper cover component 2 is arranged at the upper port of the lower shell 6, and a sealing ring 3 is sleeved on the upper cover component 2; the upper cover assembly 2 is fixedly connected with the lower shell 6 through bolts 1 arranged at four end corners.

Referring to fig. 2, the lower housing 6 is formed by welding an aluminum housing 601 and a bottom plate 602, bolt fixing holes 603 matched with bolts 1 are formed at four corners of the upper end of the aluminum housing 601, and a battery pack mounting beam 604 for fixing a battery pack is arranged in the aluminum housing 601; the bottom plate 602 is provided with a groove 605 for embedding the liquid cooling pipeline assembly 5, and the two sides of the groove 605 are provided with convex ribs 606 for reinforcing and supporting the electric core assembly 4.

Referring to fig. 3, the liquid cooling pipeline assembly 5 is formed by welding a plurality of oval flat pipes 501, a collecting pipe 502 and a pipeline joint 503.

In the above embodiment, the upper cover assembly 2 is provided with functional assemblies such as a BMS, a relay, total positive and negative output terminals, a low-voltage communication port, and a vent valve.

In the above embodiment, the assembly gap between the liquid cooling pipeline assembly 5 and the lower shell 6 is filled with the heat conducting glue, and then the electric core assembly 4 is put in, at this time, the heat conducting glue can overflow the internal gap of the whole battery pack.

The assembling process comprises the following steps: according to the heat exchange power battery system with the built-in independent liquid cooling pipeline, firstly, the liquid cooling pipeline assembly 5 is welded on the lower shell 6, and the upper surface of the warranty collecting pipe 502 is flush with the upper surface of the aluminum shell 601, so that the sealing ring 3 can be effectively sealed, and meanwhile, the welding sealing can meet the requirement; secondly, the shell 6 is put down, the opening of the shell faces upwards, a small amount of heat-conducting glue is poured to fill the gap, then the electric core assembly 4 is put in, at the moment, the heat-conducting glue can overflow the whole internal gap of the battery pack, and meanwhile, the sealing ring 3 is installed on the upper cover assembly 2; finally, the upper cover assembly 2 is installed, and the bolts 1 are fastened.

In summary, the following steps: according to the heat exchange power battery system with the built-in independent liquid cooling pipelines, the battery pack 4 can always work at the most appropriate temperature through the added liquid cooling pipeline assembly 5, the service life of the battery pack 4 is prolonged, and the safe use of the battery pack 4 is ensured; secondly, the banding clearance of the battery core subassembly 4 is filled to the size of liquid cooling pipeline subassembly 5, and the liquid cooling pipeline almost zero clearance contact battery core subassembly 4 simultaneously only needs to fill a small amount of heat conduction glue and just can exert heat exchange function, saves the higher heat conduction glue of price, and is with low costs, effectual.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. The utility model provides a built-in independent liquid cooling pipeline heat exchange power battery system, includes upper cover subassembly (2), cell subassembly (4), liquid cooling pipeline subassembly (5) and casing (6) down, its characterized in that: the liquid cooling pipeline assembly (5) is welded in the cavity of the lower shell (6); the electric core assembly (4) is installed in the liquid cooling pipeline assembly (5) and assembled with the lower shell (6) into a whole; an upper cover assembly (2) is arranged at the upper port of the lower shell (6), and a sealing ring (3) is sleeved on the upper cover assembly (2); the upper cover assembly (2) is fixedly connected with the lower shell (6) through bolts (1) arranged at four end angles.

2. The system of claim 1, wherein the system comprises: the lower shell (6) is formed by welding an aluminum shell (601) and a bottom plate (602), four end corners of the upper end of the aluminum shell (601) are provided with bolt fixing holes (603) matched with the bolts (1), and a battery pack mounting beam (604) for fixing a battery pack is arranged in the aluminum shell (601); the base plate (602) is provided with a groove (605) for embedding the liquid cooling pipeline assembly (5), and the two sides of the groove (605) are provided with convex ribs (606) for strengthening and supporting the electric core assembly (4).

3. The system of claim 1, wherein the system comprises: the liquid cooling pipeline assembly (5) is formed by welding a plurality of oval flat pipes (501), a collecting pipe (502) and a pipeline joint (503).

4. The system of claim 1, wherein the system comprises: the upper cover component (2) is provided with a BMS, a relay, a total positive and negative electrode output end, a low-voltage communication port and a vent valve.

5. The system of claim 1, wherein the system comprises: and heat-conducting glue is filled in the assembly clearance between the liquid cooling pipeline assembly (5) and the lower shell (6).