CN218939795U

CN218939795U - Integrated liquid cooling box structure

Info

Publication number: CN218939795U
Application number: CN202222787765.7U
Authority: CN
Inventors: 卢臣智
Original assignee: Cornex New Energy Co ltd
Current assignee: Cornex New Energy Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-04-28
Anticipated expiration: 2032-10-19

Abstract

The utility model provides an integrated liquid cooling box structure. The liquid cooling plate comprises a left beam and a right beam which are arranged left and right in parallel, a liquid cooling plate with a cavity structure is connected between the left beam and the right beam, front and rear end face openings of the liquid cooling plate and left and right end face seals, N first partition plates are sequentially arranged in the inner cavity of the liquid cooling plate at intervals from left to right, so that the liquid cooling plate is divided into N+1 flow channels, the first flow channels from left to right are communicated with water inlet ends, the water outlet ends of the flow channels from left to right are communicated with water outlet ends, the rear end face of the liquid cooling plate is provided with a rear flow channel plugging strip for plugging the cavity of the liquid cooling plate, and the front end face of the liquid cooling plate is provided with a front flow channel plugging strip for plugging the cavity of the liquid cooling plate, so that the cooling water can reciprocate back and forth along the N+1 flow channels in the cavity of the liquid cooling plate. The box body has simple structure and is easy to produce, so that the space utilization rate of the battery plate is increased; meanwhile, a separate liquid cooling pipeline is not required to be installed, so that the total production cost is greatly reduced.

Description

Integrated liquid cooling box structure

Technical Field

The utility model relates to the technical field of liquid cooling of battery packs, in particular to an integrated liquid cooling box structure.

Background

The power battery system is used as a core component of the electric automobile, and the safety performance of the battery pack is affected by the heat dissipation effect and heat dissipation uniformity of the battery pack.

The mature liquid cooling scheme of the current battery pack is that the box body and the liquid cooling plate are independent two components, wherein the liquid cooling plate adopts multiple forms such as harmonica pipe, coiled pipe, stamping plate, section bar plate and the like, and the box body and the liquid cooling plate are mechanically fixed.

However, the liquid cooling plate needs to occupy a separate space, so that the space utilization rate of the battery plate is low, and the energy density is low; meanwhile, the liquid cooling plate needs to be installed independently, the process cost is high, and the total cost of the box body and the liquid cooling plate is high.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an integrated liquid cooling box structure, which integrates liquid cooling of a liquid cooling plate cavity, can meet the uniform flow distribution of each flow passage, ensures that the liquid cooling effect is optimal, increases the space utilization rate of a battery plate and improves the energy density of a battery pack; meanwhile, a separate liquid cooling pipeline is not required to be installed, so that the total production cost is greatly reduced.

In order to achieve the above purpose, the integrated liquid cooling box structure of the utility model is characterized in that: the liquid cooling plate comprises a left beam and a right beam which are arranged left and right in parallel, wherein a cavity structure liquid cooling plate is connected between the left beam and the right beam, front and rear end face openings of the liquid cooling plate and left and right end face seals, N first partition plates are sequentially arranged in the cavity of the liquid cooling plate at intervals from left to right, so that the liquid cooling plate is divided into N+1 flow channels, water inlets of the first flow channels from left to right are communicated with water inlets, water outlets of the n+1th flow channels from left to right are communicated with water outlets of the first flow channels, rear flow channel plugging strips for plugging the cavity of the liquid cooling plate are arranged on the rear end face of the liquid cooling plate, and front flow channel plugging strips for plugging the cavity of the liquid cooling plate are arranged on the front end face of the liquid cooling plate, so that the cooling water can reciprocate back and forth along the N+1flow channels in the cavity of the liquid cooling plate; the top that the liquid cooling board is located the back border unsettled front flange roof beam that is connected between left roof beam and right roof beam that is provided with, the front flange roof beam inboard is provided with the front module roof beam of connecting between left roof beam and right roof beam, and being located the liquid cooling board top, the top that the liquid cooling board is located the front border unsettled back roof beam of being connected between left roof beam and right roof beam that is provided with.

Further, a plurality of second partition plates are arranged in each flow passage, so that the width of the flow passage is 15-25 mm, and the strength requirement of the box body is met.

Furthermore, the first baffle rib positions or the second baffle rib positions adjacent to the flow channel form a U-shaped structure at the reversing position, so that the flow resistance is effectively reduced.

Further, the upper surfaces of the left beam, the right beam, the front flange beam and the rear beam are respectively provided with a case cover mounting point for mounting a case cover.

Still further, left Liang Heyou roof beam lateral surface is provided with the lifting hole that is used for hoisting battery package respectively.

Still further, the support column that is used for installing electric panel is provided with to liquid cooling board upper surface and is located front flange roof beam and front module roof beam position department.

Still further, left roof beam and right roof beam upper surface both ends are provided with the equipotential mounting point that is used for battery package casing equipotential to connect respectively.

Still further, left side roof beam and right roof beam upper surface are provided with the screw sleeve that is used for whole car bolt installation respectively, left side roof beam and right roof beam upper surface are provided with the through-hole sleeve that is used for whole car nut installation respectively.

Further, the height of the lower surface of the liquid cooling plate is larger than that of the lower surfaces of the left beam and the right beam, so that the liquid cooling plate is suspended between the left beam and the right beam, and air heat insulation is facilitated.

Further, the water inlet nozzle and the water outlet nozzle are both arranged on the upper surface of the liquid cooling plate, and the water inlet nozzle and the water outlet nozzle are both in straight pipe forms with upward openings.

The utility model has the advantages that:

1. compared with the box body structure provided with the liquid cooling pipe in the prior art, the integrated liquid cooling box body structure greatly reduces the total production cost, greatly reduces the volume, increases the space utilization rate of the battery plate and improves the energy density of the battery pack;

2. the front runner blocking strip and the rear runner blocking strip in the liquid cooling structure are positioned at the outer side of the box body, and the water inlet nozzle and the water outlet nozzle are also positioned at the outer side of the box body;

3. the first baffle plate and the second baffle plate rib at the reversing position of the adjacent flow channels in the liquid cooling structure are treated in the U-shaped structure range, so that the flow resistance is effectively reduced, the uniform flow distribution of each flow channel is met, and finally, the liquid cooling effect is optimal;

4. the water nozzle in the liquid cooling structure adopts a straight pipe form with an upward opening, has simple structure, is convenient for welding, has high reliability, is convenient for installing the water nozzle joint of the battery pack, and has high operability;

5. the left beam and the right beam in the box body structure are welded by double-sided friction stir welding, and the front flange beam, the front module beam and the rear beam are welded in an arc welding mode, so that the integral strength and rigidity are high, and the strength requirement of the integrated liquid cooling box body structure is met;

6. the left beam and the right beam in the box body structure adopt one section, and the front flange beam, the front module beam, the rear beam and the water nozzle adopt one section respectively, so that the integrated liquid cooling box body structure has five sections, the types of the sections are few, the whole structure is simple, and the integrated liquid cooling box body structure is easy to produce;

the integrated liquid cooling box body has a simple structure, is easy to produce, can meet the requirement that the flow of each flow channel is uniformly distributed, ensures that the liquid cooling effect is optimal, increases the space utilization rate of the battery plate, and improves the energy density of the battery pack; meanwhile, a separate liquid cooling pipeline is not required to be installed, so that the total production cost is greatly reduced.

Drawings

FIG. 1 is a schematic perspective view of the structure of the integrated liquid cooling box of the present utility model, as seen from the rear side;

FIG. 2 is a schematic perspective view of the structure of the integrated liquid-cooled housing of the present utility model from the oblique front;

FIG. 3 is a schematic perspective view of the structure of the integrated liquid-cooled housing of the present utility model from the back side;

FIG. 4 is a transverse cross-sectional view of the liquid cooling plate lumen of FIG. 1;

in the figure: a left beam 1, a right beam 2, a liquid cooling plate 3, a front flange beam 4, a front module beam 5 and a rear beam 6;

the liquid cooling plate 3 includes: the water inlet valve comprises a first partition plate 3-1, a flow passage 3-2, a water inlet nozzle 3-3, a water outlet nozzle 3-4, a rear flow passage plugging strip 3-5, a front flow passage plugging strip 3-6 and a second partition plate 3-7;

case lid mounting point a1, lifting hole a2, support column a3, equipotential mounting point a4, screw sleeve a5, through-hole sleeve a6.

Detailed Description

The utility model is described in further detail below with reference to the drawings and specific examples.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

As shown in fig. 1 to 4, the integrated liquid cooling box structure comprises a left beam 1 and a right beam 2 which are arranged in parallel left and right, wherein a liquid cooling plate 3 with a cavity structure is connected between the left beam 1 and the right beam 2, the front end surface and the rear end surface of the liquid cooling plate 3 are open, the left end surface and the right end surface are sealed, N first partition plates 3-1 are sequentially arranged at intervals from left to right in the cavity of the liquid cooling plate 3, so that the liquid cooling plate 3 is divided into N+1 flow channels 3-2, the water inlet ends of the first flow channels 3-2 from left to right are communicated with water inlet nozzles 3-3, the water outlet ends of the N+1th flow channels 3-2 from left to right are communicated with water outlet nozzles 3-4, the rear end surface of the liquid cooling plate 3 is provided with rear flow channel plugging strips 3-5 for plugging the cavity of the liquid cooling plate 3, and the front end surface of the liquid cooling plate 3 is provided with front flow channel plugging strips 3-6 for plugging the cavity of the liquid cooling plate 3, so that the cooling water can reciprocate in the cavity of the liquid cooling plate 3 along the N+1 flow channels 3-2; the upper part of the liquid cooling plate 3 positioned at the rear edge is suspended and provided with a front flange beam 4 connected between the left beam 1 and the right beam 2, the inner side of the front flange beam 4 is provided with a front module beam 5 connected between the left beam 1 and the right beam 2 and positioned above the liquid cooling plate 3, and the upper part of the liquid cooling plate 3 positioned at the front edge is suspended and provided with a rear beam 6 connected between the left beam 1 and the right beam 2.

Specifically, as shown in fig. 4, the first partition plates 3-1 are 5 in number, and divide the liquid cooling plate 3 into 6 flow channels 3-2, so that the cooling water can reciprocate 3 times along the 6 flow channels 3-2 in the cavity of the liquid cooling plate 3. The front runner blocking strip 3-6 and the rear runner blocking strip 3-5 in the liquid cooling structure are positioned on the outer side of the box body, the water inlet nozzle 3-3 and the water outlet nozzle 3-4 are also positioned on the outer side of the box body, and the liquid cooling structure can effectively avoid the internal leakage of the runner, so that the safety accidents caused by insulation failure of the battery pack due to the internal leakage are avoided.

According to the integrated liquid cooling box structure, the liquid cooling plate 3 is integrated with liquid cooling through the cavity, and an independent liquid cooling pipeline is not required to be installed.

For liquid cooled structures: a plurality of second partition plates 3-7 are arranged in each flow passage 3-2, so that the width of the flow passage 3-2 is 15-25 mm, and the strength requirement of the box body is met. As shown in fig. 3, the flow channels 3-2 are approximately uniformly distributed in the width direction, so that the strength requirement of the box body and the flow resistance, flow distribution and liquid cooling effect requirements of the flow channels are met.

Preferably, the first partition plate 3-1 rib position or the second partition plate 3-7 rib position adjacent to the flow channel 3-2 is located at the reversing position to form a U-shaped structure, that is, the first partition plate 3-1 rib position or the second partition plate 3-7 rib position adjacent to the flow channel 3-2 is disposed within the range of the U-shaped structure at each reversing position, so that the flow resistance is effectively reduced, the uniform flow distribution of each flow channel 3-2 is simultaneously satisfied, and finally the liquid cooling effect is optimized.

Considering the flatness requirement of the liquid cooling plate 3, the liquid cooling plate 3 is formed by welding two liquid cooling plates which are bilaterally symmetrical.

For the box structure: the left beam 1 and the right beam 2 in the box structure are welded by double-sided friction stir welding, the front flange beam 4, the front module beam 5 and the rear beam 6 are welded in an arc welding mode, the overall strength and the rigidity are high, and the strength requirement of the integrated liquid cooling box structure is met. The left beam 1 and the right beam 2 in the box structure adopt a profile, the front flange beam 4, the front module beam 5, the rear beam 6, the water inlet nozzle 3-3 and the water outlet nozzle 3-4 respectively adopt a profile, so that the integrated liquid cooling box structure has five profiles, the types of the profiles are few, the whole structure is simple, and the integrated liquid cooling box structure is easy to produce.

Specifically, the upper surfaces of the left beam 1, the right beam 2, the front flange beam 4 and the rear beam 6 are respectively provided with a case cover mounting point a1 for mounting a case cover.

And hoisting holes a2 for hoisting the battery packs are respectively formed in the outer side faces of the left beam 1 and the right beam 2.

The upper surface of the liquid cooling plate 3 and the positions of the front flange beam 4 and the front module beam 5 are provided with support columns a3 for installing an electric panel.

Equipotential mounting points a4 for the equal point connection of the battery pack shell are respectively arranged at two ends of the upper surfaces of the left beam 1 and the right beam 2.

The upper surfaces of the left beam 1 and the right beam 2 are respectively provided with a threaded sleeve a5 for installing a whole car bolt, and the upper surfaces of the left beam 1 and the right beam 2 are respectively provided with a through hole sleeve a6 for installing a whole car nut. The utility model has 2 independent installation modes at the same time, wherein the threaded sleeve a5 is used for installing a whole vehicle bolt, and the through hole sleeve a6 is used for installing a whole vehicle nut.

The height of the lower surface of the liquid cooling plate 3 is larger than that of the lower surfaces of the left beam 1 and the right beam 2, so that the liquid cooling plate 3 is arranged between the left beam 1 and the right beam 2 in a suspended manner, and air heat insulation is facilitated.

The water inlet nozzle 3-3 and the water outlet nozzle 3-4 are arranged on the upper surface of the liquid cooling plate 3, the water inlet nozzle 3-3 and the water outlet nozzle 3-4 are in straight pipe forms with upward openings, the structure is simple, the welding is convenient, the reliability is high, the installation of the battery water inlet nozzle connector is convenient, and the operability is high.

The integrated liquid cooling box body has a simple structure, is easy to produce, integrates liquid cooling with the liquid cooling plate cavity, does not need to install a separate liquid cooling pipeline, and greatly reduces the total production cost; meanwhile, the uniform flow distribution of each flow channel can be met, so that the liquid cooling effect is optimal.

The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present utility model should be made in the equivalent manner, and the embodiments are included in the protection scope of the present utility model.

Claims

1. An integrated liquid cooling box structure, its characterized in that: the liquid cooling plate comprises a left beam (1) and a right beam (2) which are arranged left and right in parallel, wherein a liquid cooling plate (3) with a cavity structure is connected between the left beam (1) and the right beam (2), the front end surface and the rear end surface of the liquid cooling plate (3) are open, the left end surface and the right end surface are sealed, N first partition plates (3-1) are sequentially arranged at intervals from left to right in the inner cavity of the liquid cooling plate (3), the liquid cooling plate (3) is divided into N+1 flow channels (3-2), the water inlet ends of the first flow channels (3-2) from left to right are communicated with water inlet nozzles (3-3), the water outlet ends of the n+1 flow channels (3-2) from left to right are communicated with water outlet nozzles (3-4), the rear end surface of the liquid cooling plate (3) is provided with rear flow channel blocking strips (3-5) for blocking the cavity of the liquid cooling plate (3), and the front end surface of the liquid cooling plate (3) is provided with front flow channel blocking strips (3-6) for blocking the cavity of the liquid cooling plate (3), so that cooling water can flow back and forth along the N+1 flow channels (3-2) in the liquid cooling plate cavity; the upper part of the liquid cooling plate (3) positioned at the rear edge is suspended and provided with a front flange beam (4) connected between the left beam (1) and the right beam (2), the inner side of the front flange beam (4) is provided with a front module beam (5) connected between the left beam (1) and the right beam (2) and positioned above the liquid cooling plate (3), and the upper part of the liquid cooling plate (3) positioned at the front edge is suspended and provided with a rear beam (6) connected between the left beam (1) and the right beam (2).

2. The integrated liquid-cooled housing structure of claim 1, wherein: a plurality of second partition boards (3-7) are arranged in each flow passage (3-2), so that the width of the flow passage (3-2) is 15-25 mm, and the strength requirement of the box body is met.

3. The integrated liquid-cooled housing structure of claim 2, wherein: the rib positions of the first partition plates (3-1) or the rib positions of the second partition plates (3-7) adjacent to the flow channels (3-2) form a U-shaped structure at the reversing position, so that the flow resistance is effectively reduced.

4. The integrated liquid-cooled housing structure of claim 1, wherein: the upper surfaces of the left beam (1), the right beam (2), the front flange beam (4) and the rear beam (6) are respectively provided with a case cover mounting point (a 1) for mounting a case cover.

5. The integrated liquid-cooled housing structure of claim 4, wherein: and hoisting holes (a 2) for hoisting the battery packs are respectively formed in the outer side faces of the left beam (1) and the right beam (2).

6. The integrated liquid-cooled housing structure of claim 5, wherein: the upper surface of the liquid cooling plate (3) and the positions of the front flange beam (4) and the front module beam (5) are provided with support columns (a 3) for installing an electric panel.

7. The integrated liquid-cooled housing structure of claim 6, wherein: equipotential mounting points (a 4) for equal point connection of the battery pack shell are respectively arranged at two ends of the upper surfaces of the left beam (1) and the right beam (2).

8. The integrated liquid-cooled housing structure of claim 7, wherein: the left beam (1) and the right beam (2) are respectively provided with threaded sleeves (a 5) for installing whole car bolts, and the left beam (1) and the right beam (2) are respectively provided with through hole sleeves (a 6) for installing whole car nuts.

9. The integrated liquid-cooled housing structure of claim 1, wherein: the lower surface height of the liquid cooling plate (3) is greater than the lower surface heights of the left beam (1) and the right beam (2), so that the liquid cooling plate (3) is arranged between the left beam (1) and the right beam (2) in a suspended mode, and air heat insulation is facilitated.

10. The integrated liquid-cooled housing structure of claim 1, wherein: the water inlet nozzle (3-3) and the water outlet nozzle (3-4) are arranged on the upper surface of the liquid cooling plate (3), and the water inlet nozzle (3-3) and the water outlet nozzle (3-4) are in straight pipe forms with upward openings.