CN216750055U

CN216750055U - External integrated liquid cooling pipeline heat exchange power battery system

Info

Publication number: CN216750055U
Application number: CN202122935340.1U
Authority: CN
Inventors: 邵明顶; 宋晓丹; 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: 2022-06-14
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses an external integrated liquid cooling pipeline heat exchange power battery system, which comprises an upper cover component, an electric core component, a liquid cooling pipeline component and a lower shell, wherein the electric core component is arranged in the cavity of the lower shell; 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 liquid cooling pipeline assembly is formed by welding a plurality of oval flat pipes and a collecting pipe, and the upper end of the collecting pipe is provided with a collecting pipe outlet; the upper cover subassembly is equipped with the coolant liquid inlet and outlet port including cast aluminium upper cover body, cast aluminium upper cover body's up end, is equipped with the liquid cooling runner at the lower terminal surface of cast aluminium upper cover body, and the one end and the coolant liquid inlet and outlet port of liquid cooling runner communicate each other, and the other end of liquid cooling runner passes through the pressure manifold export and pressure manifold intercommunication. The battery cell can always work at the most appropriate temperature by adding the liquid cooling system, so that the service life of the battery cell is prolonged, and the safe use of the battery cell is ensured; simultaneously with the design of liquid cooling pipeline in the battery package outside, convenient maintenance when the liquid cooling pipeline goes wrong.

Description

External integrated liquid cooling pipeline heat exchange power battery system

Technical Field

The utility model relates to a low pressure power battery technical field specifically is an external integrated liquid cooling pipeline heat exchange power battery system.

Background

The existing low-voltage power battery system scheme has no cooling device, and natural cooling or air cooling is mostly adopted; the battery cell can not be used at the optimal applicable temperature, the service life is short, and heat can not be dissipated in time when the temperature is high, so that thermal runaway is easily caused; when the temperature is lower, the use easily makes the inside short circuit of electricity core, has the risk of taking place the conflagration.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an external integrated liquid cooling pipeline heat exchange power battery system makes the battery move at suitable temperature through increasing liquid cooling system, can reduce the incident to solve the problem of proposing in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: an external integrated liquid cooling pipeline heat exchange power battery system comprises an upper cover component, an electric core component, a liquid cooling pipeline component and a lower shell, wherein the electric core component is installed in a cavity of the lower shell; 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 liquid cooling pipeline assembly is installed on the outer side of the lower shell in an attaching mode, the liquid cooling pipeline assembly is formed by welding a plurality of oval flat pipes and a collecting pipe, and a collecting pipe outlet is formed in the upper end of the collecting pipe; the upper cover subassembly is equipped with the coolant liquid inlet and outlet port including cast aluminium upper cover body, cast aluminium upper cover body's up end, is equipped with the liquid cooling runner at the lower terminal surface of cast aluminium upper cover body, and the one end and the coolant liquid inlet and outlet port of liquid cooling runner communicate each other, and the other end of liquid cooling runner passes through the pressure manifold export and pressure manifold intercommunication.

Preferably, 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 battery pack mounting beams for fixing the liquid cooling pipeline assembly are arranged on the periphery of the outer side of the aluminum shell; the bottom plate lower end face is provided with a groove used for embedding the oval flat tube, and convex ribs used for reinforcing and supporting the liquid cooling pipeline assembly are arranged on two sides of the groove.

Preferably, the upper surface of the collecting pipe is flush with the upper surface of the aluminum shell.

Preferably, the edge of the lower end face of the cast aluminum upper cover body is provided with a sealing ring limiting groove for fixing a sealing ring.

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

Preferably, the inboard binding face of liquid cooling pipeline subassembly scribbles heat conduction structure and glues to glue the outside of pasting casing under through heat conduction structure, pack heat conduction structure in the inboard of casing and the fit-up gap of electric core subassembly down and glue.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this external integrated liquid cooling pipeline heat exchange power battery system can make electric core work at the most suitable temperature all the time through the liquid cooling system with battery case cooperation design, and extension electric core life guarantees electric core safe handling, and its liquid cooling pipeline subassembly is the loop alone, and is in the same place with the aluminum hull welding again, has both saved and has installed fixed pipeline alone, does not influence aluminum hull welded seal again, and is comparatively safe.

2. This external integrated liquid cooling pipeline heat exchange power battery system designs liquid cooling pipeline subassembly in the battery package outside, convenient maintenance when the liquid cooling pipeline goes wrong.

3. This external integrated liquid cooling pipeline heat exchange power battery system, with the port integration to the upper cover subassembly of liquid cooling runner on, reduce structural complexity, reduce the space, and the liquid cooling pipeline design can the lug weld in the outside on the aluminum hull, need not surely go out the mounted position on the aluminum hull, reduce cost improves product competitiveness.

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 these drawings without creative efforts.

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

FIG. 2 is a cross-sectional view of a liquid cooling flow path of the present invention;

FIG. 3 is a schematic view of the internal structure of the lower casing of the present invention;

FIG. 4 is a schematic view of the structure of the upper cover assembly of the present invention

Fig. 5 is a structural view of the liquid cooling pipeline assembly of the present invention;

fig. 6 is a partial sectional view of the power battery system of the present invention;

fig. 7 is a partial sectional view of the power battery system of the present invention.

In the figure: 1. a bolt; 2. an upper cover assembly; 201. a coolant inlet port; 202. casting an aluminum upper cover body; 203. a sealing ring limiting groove; 204. a liquid cooling flow passage; 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. an outlet of the collecting pipe; 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 described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, an external integrated liquid cooling pipeline heat exchange power battery system comprises an upper cover assembly 2, a battery cell assembly 4, a liquid cooling pipeline assembly 5 and a lower shell 6, wherein the battery cell assembly 4 is installed in a cavity of the lower shell 6; an upper cover assembly 2 is arranged at the upper port of the lower shell 6, and the upper cover assembly 2 is fixedly connected with the lower shell 6 through bolts 1 arranged at four end corners; the upper cover component 2 is sleeved with a sealing ring 3; the liquid cooling pipeline assembly 5 is attached to the outer side of the lower shell 6, the liquid cooling pipeline assembly 5 is formed by welding a plurality of oval flat tubes 501 and a collecting pipe 502, and a collecting pipe outlet 503 is formed in the upper end of the collecting pipe 502; the upper cover assembly 2 comprises a cast aluminum upper cover body 202, and a sealing ring limiting groove 203 for fixing a sealing ring 3 is arranged at the edge of the lower end surface of the cast aluminum upper cover body 202; the upper end surface of the cast aluminum upper cover body 202 is provided with a cooling liquid inlet/outlet port 201, the lower end surface of the cast aluminum upper cover body 202 is provided with a liquid cooling flow passage 204, one end of the liquid cooling flow passage 204 is communicated with the cooling liquid inlet/outlet port 201, and the other end of the liquid cooling flow passage 204 is communicated with the collecting pipe 502 through a collecting pipe outlet 503.

In this embodiment, 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 end corners of the upper end of the aluminum housing 601, and battery pack mounting beams 604 for fixing the liquid cooling pipeline assembly 5 are arranged around the outer side of the aluminum housing 601; bottom plate 602 lower terminal surface is equipped with the recess 605 that is used for embedded oval flat pipe 501, and the both sides of recess 605 are equipped with the protruding muscle 606 that is used for strengthening and supports liquid cooling pipeline subassembly 5, and wherein, the upper surface of pressure manifold 502 and the upper surface parallel and level of aluminum hull 601 to the sealing washer can effectively be sealed, guarantees simultaneously that welded seal can satisfy the requirement.

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

In the above embodiment, the inner bonding surface of the liquid cooling pipeline assembly 5 is coated with the heat conducting structure glue, and is adhered to the outer side of the lower shell 6 through the heat conducting structure glue, and the heat conducting structure glue is filled in the assembly gap between the inner side of the lower shell 6 and the electric core assembly 4.

The assembling process comprises the following steps: the external integrated liquid cooling pipeline heat exchange power battery system is characterized in that a liquid cooling pipeline assembly 5 is welded on the outer side of a lower shell 6, a proper amount of heat conduction structural adhesive is coated on the joint surface of the lower shell 6 and the liquid cooling pipeline assembly 5, and the upper surface of a warranty collecting pipe 502 is flush with the upper surface of an aluminum shell 601, so that a sealing ring 3 can be effectively sealed, and meanwhile, the requirement for welding and sealing can be met; then putting down the shell 6, pouring heat-conducting glue to fill the gap with the opening facing upwards, putting the shell into the electric core assembly 4, and at the moment, the heat-conducting glue can overflow the whole internal gap of the battery pack, and meanwhile, installing the sealing ring 3 on the upper cover assembly 2; finally, the upper cover assembly 2 is installed and fastened through the bolts 1.

In summary, the following steps: according to the external integrated liquid cooling pipeline heat exchange power battery system, the battery core can always work at the most appropriate temperature through the liquid cooling system which is designed by being matched with the battery shell, the service life of the battery core is prolonged, and the safe use of the battery core is ensured; secondly, the liquid cooling pipeline assembly 5 is designed on the outer side of the battery pack, so that the liquid cooling pipeline assembly is convenient to maintain when a problem occurs in the liquid cooling pipeline; in addition, the port of the liquid cooling flow channel 204 is integrated on the upper cover component 2, the structural complexity is reduced, the space is reduced, the liquid cooling pipeline is designed on the outer side and can be directly welded on the aluminum shell 601, the installation position does not need to be cut on the aluminum shell 601, the cost is reduced, and the product competitiveness is improved.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An external integrated liquid cooling pipeline heat exchange power battery system comprises an upper cover component (2), a battery cell component (4), a liquid cooling pipeline component (5) and a lower shell (6), wherein the battery cell component (4) is installed in a cavity of the lower shell (6); 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 method is characterized in that: the liquid cooling pipeline assembly (5) is attached to the outer side of the lower shell (6), the liquid cooling pipeline assembly (5) is formed by welding a plurality of oval flat pipes (501) and a collecting pipe (502), and a collecting pipe outlet (503) is formed in the upper end of the collecting pipe (502); the upper cover assembly (2) comprises a cast aluminum upper cover body (202), a cooling liquid inlet and outlet port (201) is formed in the upper end face of the cast aluminum upper cover body (202), a liquid cooling flow channel (204) is arranged on the lower end face of the cast aluminum upper cover body (202), one end of the liquid cooling flow channel (204) is communicated with the cooling liquid inlet and outlet port (201), and the other end of the liquid cooling flow channel (204) is communicated with a collecting pipe (502) through a collecting pipe outlet (503).

2. The external integrated liquid cooling pipeline heat exchange power battery system of claim 1, wherein: the upper cover assembly (2) is fixedly connected with the lower shell (6) through bolts (1) arranged at four end angles.

3. The external integrated liquid cooling pipeline heat exchange power battery system of claim 2, wherein: 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 the periphery of the outer side of the aluminum shell (601) is provided with a battery pack mounting beam (604) for fixing the liquid cooling pipeline assembly (5); the lower end face of the bottom plate (602) is provided with a groove (605) used for embedding the oval flat tube (501), and the two sides of the groove (605) are provided with convex ribs (606) used for reinforcing and supporting the liquid cooling pipeline assembly (5).

4. The external integrated liquid cooling pipeline heat exchange power battery system of claim 1, wherein: the upper surface of the collecting pipe (502) is flush with the upper surface of the aluminum shell (601).

5. The external integrated liquid cooling pipeline heat exchange power battery system of claim 1, wherein: the edge of the lower end face of the cast aluminum upper cover body (202) is provided with a sealing ring limiting groove (203) for fixing a sealing ring (3).

6. The external integrated liquid cooling pipeline heat exchange power battery system of claim 1, wherein: the upper cover component (2) is also provided with a BMS, a relay, a total positive and negative output end, a low-voltage communication port and a vent valve.

7. The external integrated liquid cooling pipeline heat exchange power battery system of claim 1, wherein: the inboard binding face of liquid cooling pipeline subassembly (5) scribbles heat conduction structure and glues to glue the outside of pasting casing (6) down through heat conduction structure, fill heat conduction structure in the inboard of casing (6) and the fit-up gap of electric core subassembly (4) down and glue.