CN220895688U

CN220895688U - High-integration liquid cooling battery package tray assembly

Info

Publication number: CN220895688U
Application number: CN202322247464.XU
Authority: CN
Inventors: 林文裕
Original assignee: Anhui Zhishanghe Technology Co ltd
Current assignee: Anhui Zhishanghe Technology Co ltd
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-05-03
Anticipated expiration: 2033-08-21

Abstract

The utility model discloses a high-integration liquid-cooled battery pack tray assembly, which comprises a liquid-cooled substrate for controlling the temperature of a battery, wherein a flow channel for medium circulation flow is arranged in the liquid-cooled substrate; the tray assembly bottom is equipped with the backplate structure that is used for improving structural strength, backplate structure is mainly become with parallel, crisscross, alternately, range upon range of or the backplate Liang Tizu that combines the arrangement by lower liquid cooling base plate bottom. The runner is integrally formed, so that the problem of medium leakage is avoided; the medium is continuously split, the flow path is prolonged, and the purpose of rapid cooling is realized.

Description

High-integration liquid cooling battery package tray assembly

Technical Field

The utility model relates to the technical field of power batteries, in particular to a high-integration liquid-cooled battery pack tray assembly.

Background

The battery package tray is a battery monomer, the module is fixed on the metal shell in a mode which is most favorable for thermal management, the key effect of protecting normal and safe operation of a battery is exerted, the liquid cooling plate of the conventional battery package tray adopts an aluminum alloy extrusion molding process, a liquid cooling runner is formed by welding after the liquid cooling plate extrudes the runner, the air tightness of the liquid cooling runner at the welding position is difficult to control, the air tightness yield is very low, in the use process, medium is often leaked, the medium leakage is quite serious, even if the medium with good insulating property is adopted, the insulating property can be immediately reduced after external impurities are encountered, and therefore, the sealing reliability of the liquid cooling plate is very important.

Disclosure of utility model

The utility model aims to solve the technical problems that: the utility model aims to overcome the technical defect of low air tightness yield caused by the fact that a liquid cooling plate of a battery pack tray is formed into a liquid cooling runner through aluminum alloy extrusion welding in the prior art, and provides a high-integration liquid cooling battery pack tray assembly, which effectively solves the problems that an aluminum alloy extrusion welding liquid cooling plate cannot be sealed after welding, and air leakage and liquid leakage occur. The technical scheme is as follows: in order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the high-integration liquid-cooled battery pack tray assembly comprises a liquid-cooled substrate for controlling the temperature of a battery, wherein a flow channel for medium circulation flow is arranged in the liquid-cooled substrate, the liquid-cooled substrate comprises an upper liquid-cooled substrate and a lower liquid-cooled substrate which are formed in a stacked mode, a medium flow area is formed in the concave mode on the surface of the lower liquid-cooled substrate, and after the upper liquid-cooled substrate and the lower liquid-cooled substrate are spliced, a channel for medium flow is formed in the medium flow area; the bottom of the tray assembly is provided with a guard plate structure for improving the structural strength, and the guard plate structure mainly comprises guard plates Liang Tizu which are arranged in parallel, staggered, crossed, laminated or combined mode at the bottom of the lower liquid cooling substrate.

As a further improvement of the utility model, the guard plate beam body comprises guard plate vertical beams extending from one end to the other end from two sides of the bottom of the lower liquid cooling substrate along the medium flowing direction, and guard plate cross beams perpendicular to the guard plate vertical beams, wherein a plurality of guard plate cross beams are arranged at intervals.

As a further improvement of the utility model, the medium flow area comprises a first medium flow area and a second medium flow area which are communicated with each other, and after the upper liquid cooling substrate and the lower liquid cooling substrate are spliced, the first medium flow area and the second medium flow area form a first medium flow channel and a second medium flow channel for medium circulation flow.

As a further improvement of the present utility model, the first medium flow area and the second medium flow area are arranged side by side in the medium flow direction on the lower liquid-cooled substrate.

As a further improvement of the utility model, the inlet section of the first medium flow channel is provided with a medium inlet channel, the outlet section of the second medium flow channel is provided with a medium return channel, the upper liquid cooling substrate is provided with a medium inlet and a medium outlet, and the medium inlet, the medium inlet channel, the first medium flow channel, the second medium flow channel, the medium return channel and the medium outlet are mutually communicated.

As a further development of the utility model, a flow dividing platform for the flow dividing of the medium is provided in both medium flow regions.

As a further improvement of the utility model, a plurality of strip-shaped ribs for distributing the medium for a plurality of times are arranged on two sides of the distribution platform, and the strip-shaped ribs and the distribution platform are convex platforms which are formed by sinking towards the upper liquid cooling substrate.

As a further improvement of the utility model, the edge beam frame is arranged on the upper liquid cooling substrate, and the edge beam frame is formed by encircling the upper liquid cooling substrate along the circumference.

As a further improvement of the present utility model, the inner bottom surface of the edge beam frame, which is in contact with the upper liquid-cooled substrate, is recessed toward the inside thereof, thereby forming a recess for applying a sealant between the surface of the upper liquid-cooled substrate and the inner bottom surface of the edge beam frame.

The beneficial effects are that: compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

1. According to the high-integration liquid-cooled battery pack tray assembly, the upper liquid-cooled base plates and the lower liquid-cooled base plates are spliced into a whole, the flow channels are integrally formed, and the problem of medium leakage is avoided.

2. According to the high-integration liquid-cooled battery pack tray assembly provided by the utility model, the flow channel is provided with the flow distribution platform and the strip-shaped convex edges, so that the continuous flow distribution of the medium is realized, the flow paths of the medium are continuously communicated in a cross manner, the flow paths of the medium are greatly increased, the heat exchange efficiency is improved, and the purpose of rapid cooling is realized.

3. The bottom of the tray assembly is provided with the guard plate structure for improving the structural strength, the guard plate structure mainly comprises guard plates Liang Tizu which are arranged at the bottom of the lower liquid cooling substrate in a parallel, staggered, crossed, laminated or combined mode, when the tray assembly is impacted, the guard plate structure absorbs impact energy, so that the lower liquid cooling substrate is not impacted by or is less impacted by external force, and the service life of the battery pack is greatly prolonged through the guard plate structure and the strength design of the lower liquid cooling substrate.

Drawings

FIG. 1 is an exploded view of the structure of a highly integrated liquid cooled battery pack tray assembly of the present utility model;

FIG. 2 is a schematic diagram of the structure of the lower liquid-cooled substrate in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at C;

fig. 4 is a top view of the battery pack tray assembly;

FIG. 5 is a cross-sectional view of 1-1 of FIG. 4 (without the side sill frame);

FIG. 6 is an enlarged view at A in FIG. 5;

FIG. 7 is an enlarged view at B in FIG. 5;

Fig. 8 is a schematic structural view of a deck beam.

Reference numerals in the schematic drawings illustrate:

1. A liquid cooling substrate is arranged on the upper part; 11. a module beam; 12. a medium inlet; 13. a medium outlet; 100. concave part

2. A lower liquid-cooled substrate; 200. a first media flow area; 201. a second media flow area; 202. a medium inlet channel; 203. a medium return channel; 204. a diversion platform; 205. strip-shaped convex edges; 2041. a top wall; 2042. a sidewall;

3. A side beam frame; 31. a front beam; 32. a rear beam; 33. a left beam; 34. a right beam;

4. A guard plate beam body; 41. guard board cross beams; 42. guard plate vertical beams; 410. reinforcing the boss; 420. a bump reinforcement structure;

50. and (5) pulling and riveting the nut.

Detailed Description

For a further understanding of the present utility model, reference should be made to the following detailed description of the utility model, taken in conjunction with the accompanying drawings and detailed description.

In the description of the present utility model, it should be understood that the terms "center," "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 thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The utility model provides a high integrated liquid cooling battery package tray subassembly, including the liquid cooling base plate of control battery temperature, be located the boundary beam frame 3 on the liquid cooling base plate and the backplate structure that liquid cooling base plate lower part was used for improving structural strength, the liquid cooling base plate includes upper liquid cooling base plate 1 and lower liquid cooling base plate 2 that the range upon range of formation, upper liquid cooling base plate 1 is dull and stereotyped form, lower liquid cooling base plate 2's surface indent forms the medium flow district, the medium flow district is the cell body space that lower liquid cooling base plate 2 faced the surface indent of upper liquid cooling base plate 1 formed, in this embodiment, the quantity of medium flow district has two, here define respectively as first medium flow district 200 and second medium flow district 201, first medium flow district 200 and second medium flow district 201 are on lower liquid cooling base plate 2, arrange side by side along the medium flow direction, these two medium flow districts are mutual communication.

After the upper liquid cooling substrate 1 and the lower liquid cooling substrate 2 are spliced, the openings of the tank bodies of the first medium flow area 200 and the second medium flow area 201 are closed by the upper liquid cooling substrate 1, so that a flow channel for medium flow is formed between the upper liquid cooling substrate 1 and the lower liquid cooling substrate 2. Defined herein as a first media flow path and a second media flow path. If the first medium flow channel is used as a medium inflow channel, the second medium flow channel is a medium outflow channel, the inlet section of the first medium flow channel is provided with a medium converging channel 202, the outlet section of the second medium flow channel is provided with a medium return channel 203, the medium converging channel 202 and the medium return channel 203 are arranged on the same side, the medium flows circularly 360 degrees from the medium converging channel 202 and flows out from the medium return channel 203, and opposite to the medium converging channel 202 and the medium return channel 203, the upper liquid cooling substrate 1 is provided with a medium inlet 12 and a medium outlet 13 which are respectively communicated with the medium converging channel 202 and the medium return channel 203. The medium inlets and outlets 12, 13, the medium inlet passage 202, the medium return passage 203, the first medium flow passage, and the second medium flow passage communicate with each other. The redundant heat generated by the operation of the battery is taken away by the medium circulating in the flow channel. The medium here includes a cooling medium including a refrigerant, a cooling liquid, and the like.

The medium flowing area arranged on the lower liquid cooling substrate 2 is integrally formed through processes such as stamping, the upper liquid cooling substrate 1 can be a blowing liquid cooling plate or a brazing liquid cooling plate, then the upper liquid cooling substrate 1 and the lower liquid cooling substrate 2 are of a laminated structure, the integral and sealing performance of the upper liquid cooling substrate 1 and the lower liquid cooling substrate 2 are ensured, and the problems that an aluminum alloy extrusion welding liquid cooling plate cannot be sealed after welding and leakage of air and liquid are effectively solved.

Taking the first medium flow area 200 as an example, as described above, the first medium flow area 200 is a tank space formed by recessing the surface of the lower liquid cooling substrate 2, a diversion platform 204 for diversion of the medium is disposed at the connection part of the tank space and the medium inlet channel 202, the diversion platform 204 is a protruding platform facing the upper liquid cooling substrate 1 in the tank space, and one end of the diversion platform 204 extends from the connection part to the opposite side of the medium inlet channel 202 along the medium flow direction and is not in contact with the side wall of the tank space, so as to ensure connectivity of the flow channel.

The space of the tank body at two sides of the diversion platform 204 is internally provided with strip-shaped ribs 205 facing the liquid cooling substrate 1, the strip-shaped ribs 205 are similar to the diversion platform 204 in structure, are convex platforms formed by recessing the tank bottom towards the upper liquid cooling substrate 1, and have different sizes, in the embodiment, three strip-shaped ribs 205 are arranged side by side at intervals to form minimum rib units, the minimum rib units are arranged at intervals along the flowing direction of a medium to form a row, and the two rows of rib units are symmetrically distributed by taking the diversion platform 204 as an axis.

Similarly, the second medium flow area 201 is provided with a diversion platform 204 and a strip-shaped rib 205, and the structure of the second medium flow area is the same as that of the first medium flow area 200, which will not be described herein again, and when the upper liquid-cooled substrate 1 is spliced with the lower liquid-cooled substrate 2, the upper liquid-cooled substrate 1 is attached to the tops of the raised platforms. The medium flow path is: a medium inlet 12, a medium inlet channel 202, a first medium flow area 200, a second medium flow area 201, a medium outlet 13.

The diversion platform 204 and the raised platform of the strip-shaped ribs 205 comprise a top wall 2041 and a side wall 2042, the side wall 2042 is in smooth transition with the top wall 2041, after medium is gathered into the channel 202 from the medium inlet 12-medium, the medium is divided into two parts by the diversion platform 204, the impact pressure of the two parts when the medium flows is 2.5-3MPa, the side wall 2042 can support and offset the impact pressure generated when the medium flows, in addition, the strip-shaped ribs 205 and the rib units are arranged at intervals, each medium can be divided into two parts again when flowing through one strip-shaped rib 205, the plurality of strip-shaped ribs 205 enable the medium to be continuously split, and the flow paths of the medium are continuously communicated in a crossing way, so that the flow path of the medium is increased, and the flow path design greatly improves the heat exchange efficiency and achieves the purpose of rapid cooling.

Besides, the diversion platform 204 and the strip-shaped ribs 205 are raised platforms facing the upper liquid cooling substrate 1 in the bottom space, so that the structure can increase the structural strength and the bearing capacity of the lower liquid cooling substrate 2, and can resist external impact without depending on other components.

The upper liquid cooling substrate 1 is provided with the boundary beam frame 3, the boundary beam frame 3 is formed by encircling the upper liquid cooling substrate 1 along the circumferential direction, the boundary beam frame 3 is formed by rolling, in the embodiment, the boundary beam frame 3 is formed by welding a front beam 31, a rear beam 32, a left beam 33 and a right beam 34, the front beam 31 is a certain distance away from the edge of the liquid cooling substrate, so that a space is reserved for installing the medium inlet 12 and the medium outlet 13, high-strength rolled steel materials can be selected as frame materials, the wall thickness is 0.8-5mm, the whole weight of the battery box is greatly reduced by adopting the high-strength rolled steel materials, the whole load distribution and the cruising ability of the electric vehicle are improved, and the grouping efficiency and the energy density are improved. The section of the boundary beam frame can be shaped like a Chinese character 'kou', and the section can be shaped like a Chinese character 'ri' or designed in other shapes for improving the structural strength of the boundary beam frame, and is flexibly selected according to actual conditions.

The inner bottom surface of the edge beam frame 3 contacting the upper liquid-cooled substrate 1 is recessed toward the inside thereof, thereby forming a recess 100 for applying a sealant between the surface of the upper liquid-cooled substrate 1 and the inner bottom surface of the edge beam frame 3. The bottom surface of the inner side of the side beam frame 3 is fixed with the surface of the upper liquid cooling substrate 1 (namely, the space where the concave part is located) through gluing, and the bottom surface of the outer side of the side beam frame 3 is fixed with the liquid cooling substrate through riveting. The surface of the upper liquid cooling substrate 1 is provided with a module beam 11 for supporting a battery module, and the module beam 11 is positioned on the inner side of the side beam frame 3, namely on the inner sides of the front beam 31 and the rear beam 32 and is arranged in parallel.

The design of the diversion platform 204 and the strip-shaped ribs 205 improves the structural strength and the bearing capacity of the lower liquid cooling substrate 2, and on this basis, in order to improve the overall stability and strength of the tray assembly, the bottom of the lower liquid cooling substrate 2 is further provided with a guard plate structure, which mainly comprises guard plate beams 4 arranged in parallel, staggered, crossed, laminated or combined manner at the bottom of the lower liquid cooling substrate 2.

In this embodiment, the shield beam body 4 includes shield vertical beams 42 and shield cross beams 41, and the shield vertical beams 42 and the shield cross beams 41 are arranged in a vertically staggered manner at the bottom of the lower liquid-cooled substrate 2. Specifically, the guard plate vertical beams 42 are parallel to the longitudinal direction of the lower liquid-cooled substrate 2 (i.e., the flow direction of the medium), extend from one end to the other end of the bottom of the lower liquid-cooled substrate 2 along the longitudinal direction thereof, and are two in number, and are located on both sides of the lower liquid-cooled substrate 2, i.e., on the same side as the left and right beams 33 and 34 but facing away from each other. The guard plate beams 41 are perpendicular to the length direction of the lower liquid cooling substrate 2, and the guard plate beams 41 are arranged at intervals along the length direction of the lower liquid cooling substrate 2, three guard plate beams are arranged at the middle part and near the two ends, and the positions near the two ends refer to the positions on the same side as the module beams 11 on the two sides but opposite to each other.

Taking the backplate crossbeam 41 as an example to describe its structure constitution, because the diversion platform 204 is the protruding platform of lower liquid cooling base plate 2 tank bottom space orientation upper liquid cooling base plate 1, consequently, see from the back of lower liquid cooling base plate 2, the position that diversion platform 204 is located has formed the indent cavity, correspondingly, be equipped with the reinforcing boss 410 that corresponds with the indent cavity on the backplate crossbeam 41, reinforcing boss 410 has compensatied the atress weakness that the indent cavity probably exists, in addition, be provided with protruding reinforcing structure 420 on backplate crossbeam 41's the body structure, be provided with protruding reinforcing structure on backplate vertical beam 42's the body structure too, through backplate vertical beam 42 and backplate crossbeam 41's setting, tray subassembly's wholeness, stability, structural strength all have all been promoted, also obtain very big promotion to battery module's bearing capacity. When the automobile is impacted, the guard plate structure absorbs impact energy, so that the lower liquid cooling substrate is not impacted by or is less impacted by external force, and the service life of the battery pack is greatly prolonged through the guard plate structure and the strength design of the lower liquid cooling substrate.

The arrangement mode of the guard plate structure can be selected by a person skilled in the art according to actual situations, and the guard plate structure can be arranged in a parallel interval mode, a staggered mode, a crossed mode, a laminated mode or the like or a combination mode of the arrangement modes.

The manner in which the components of the battery pack tray assembly are connected is further described below.

The front beam 31, the rear beam 32, the left beam 33 and the right beam 34 of the side beam frame 3 are connected with the upper cover of the battery module through rivet nuts 50, and the inner bottom surface of the side beam frame 3 and the surface of the upper liquid cooling substrate 1 (namely the space where the concave part is positioned) are fixed through glue coating; the outer bottom surfaces of the left beam 33 and the right beam 34, the liquid cooling base plate and the guard plate vertical beam 42 at the bottom are fixed through rivet nuts 50; the outer bottom surfaces of the front beam 31 and the rear beam 32 are fixed to the liquid-cooled substrate by rivet nuts 50.

The battery module (not shown in the figure) is positioned on the surface of the upper liquid cooling substrate 1 and is connected with the module beams 11 with supporting functions at two ends through rivet nuts 50; the module beams 11 at the two ends, the liquid cooling base plate and the guard plate cross beam 41 at the bottom are fixed by rivet nuts 50.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. The utility model provides a high integrated liquid cooling battery package tray subassembly, includes the liquid cooling base plate of control battery temperature, is equipped with the runner that supplies the medium circulation to flow in the liquid cooling base plate, its characterized in that: the liquid cooling substrate comprises an upper liquid cooling substrate (1) and a lower liquid cooling substrate (2) which are formed by lamination, a medium flowing area is concavely formed on the surface of the lower liquid cooling substrate (2), and after the upper liquid cooling substrate and the lower liquid cooling substrate (1, 2) are spliced, a channel for medium flowing is formed in the medium flowing area; the tray assembly bottom is equipped with the backplate structure that is used for improving structural strength, backplate structure mainly comprises backplate roof beam body (4) that lower liquid cooling base plate (2) bottom was arranged with parallel, crisscross, alternately, range upon range of or combination thereof.

2. The highly integrated liquid cooled battery pack tray assembly of claim 1, wherein: the guard plate beam body (4) comprises guard plate vertical beams (42) which extend from one end to the other end from two sides of the bottom of the lower liquid cooling substrate (2) along the medium flowing direction, and guard plate cross beams (41) which are perpendicular to the guard plate vertical beams (42) and are arranged at intervals, wherein the plurality of guard plate cross beams (41) are arranged at intervals.

3. The highly integrated liquid cooled battery pack tray assembly of claim 1, wherein: the medium flow area comprises a first medium flow area (200) and a second medium flow area (201) which are communicated with each other, and after the upper liquid cooling base plates (1) and the lower liquid cooling base plates (2) are spliced, the first medium flow area (200) and the second medium flow area (201) form a first medium flow channel and a second medium flow channel for medium circulation flow.

4. The highly integrated liquid cooled battery pack tray assembly of claim 3, wherein: the first medium flow area (200) and the second medium flow area (201) are arranged in parallel along the medium flow direction on the lower liquid cooling substrate (2).

5. The highly integrated liquid cooled battery pack tray assembly of claim 4, wherein: the inlet section of the first medium flow channel is provided with a medium inlet channel (202), the outlet section of the second medium flow channel is provided with a medium return channel (203), the upper liquid cooling substrate (1) is provided with a medium inlet (12) and a medium outlet (13), and the medium inlet (12), the medium inlet channel (202), the first medium flow channel, the second medium flow channel, the medium return channel (203) and the medium outlet (13) are mutually communicated.

6. The highly integrated liquid cooled battery pack tray assembly of claim 4, wherein: a diversion platform (204) for diversion of the medium is arranged in the two medium flow areas.

7. The highly integrated liquid cooled battery pack tray assembly of claim 6, wherein: the two sides of the diversion platform (204) are also provided with a plurality of strip-shaped ribs (205) for diverting medium for a plurality of times, and the strip-shaped ribs (205) and the diversion platform (204) are convex platforms which are formed by recessing towards the upper liquid cooling substrate (1).

8. The highly integrated liquid cooled battery pack tray assembly of claim 1, wherein: the upper liquid cooling substrate (1) is provided with a boundary beam frame (3), and the boundary beam frame (3) is formed by encircling the upper liquid cooling substrate (1) along the circumference.

9. The highly integrated liquid cooled battery pack tray assembly of claim 8, wherein: the inner bottom surface of the side beam frame (3) contacted with the upper liquid cooling substrate (1) is recessed inwards, so that a concave part (100) for coating sealant is formed between the surface of the upper liquid cooling substrate (1) and the inner bottom surface of the side beam frame (3).