CN212161883U

CN212161883U - Battery standard box

Info

Publication number: CN212161883U
Application number: CN202020442338.3U
Authority: CN
Inventors: 赖兴华; 时红海; 司福建; 王磊
Original assignee: Wuxi Vt Industrial Technology Co ltd
Current assignee: Wuxi Vt Industrial Technology Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-15
Anticipated expiration: 2030-03-31

Abstract

The utility model provides a battery standard box, it can solve traditional standard box big, the energy density low and with high costs technical problem of quality. The utility model provides a battery standard case, its includes liquid cooling board and box frame, its characterized in that: the box frame is of an annular structure and encloses the periphery of the liquid cooling plate, and the box frame and the liquid cooling plate are fixed through friction stir welding to form a battery installation cavity with an upper end opening. The liquid cooling plate is integrated with the box body framework, the liquid cooling plate is used as a section bar support at the bottom of the standard box and used for bearing the weight of the battery, and can also be used for cooling the battery, so that the battery is in the most appropriate temperature range, the arrangement of a box body bottom plate is omitted, the weight of the whole standard box is reduced, the energy density of the battery box is improved, the endurance mileage is increased, parts and auxiliary materials required for assembly are reduced, and the cost of the whole standard box is reduced; in addition, the inside pipeline setting that need not of box has avoided the risk of leaking.

Description

Battery standard box

Technical Field

The utility model belongs to lithium battery box and thermal management field, concretely relates to battery standard case.

Background

The most important composition of the new energy electric automobile is a lithium ion power battery system, which directly determines the endurance, service life and safety of the electric automobile, and the composition of a power battery pack, namely a battery box body, is very important, so that the battery system is protected from external collision, and the temperature range of an internal battery is ensured.

Traditional standard case is box and thermal management separation, wherein thermal management system is mainly by the liquid cooling board, the pipeline, it mainly goes out to connect the mouth etc. to constitute to advance, and the liquid cooling board is generally installed in the bottom half, there is thermal-insulated bubble cotton as thermal-insulated and buffering use between the two, can fill the heat conduction material between module and the liquid cooling board simultaneously usually, it is good to make module and liquid cooling board contact like this, better carry out the heat transfer, then the liquid cooling board is advancing mainly to go out to connect the mouth with the main pipeline and is utilizing to be connected. Traditional standard case, liquid cooling board and box separation assembly for the required spare part of assembly and auxiliary material are more, have following defect: (1) the energy density of the standard box is low; (2) the whole standard box has large mass and cannot meet the requirement of light weight; (3) the overall cost of the standard box is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery standard box, it can solve traditional standard box big, the energy density low and with high costs technical problem of quality.

Its technical scheme is such, a battery standard case, it includes liquid cooling board and box frame, its characterized in that: the box frame is of an annular structure and encloses the periphery of the liquid cooling plate, and the box frame and the liquid cooling plate are fixed through friction stir welding to form a battery installation cavity with an upper end opening.

Furthermore, the cavity of the liquid cooling plate is of a structure with closed left and right sides and open head and tail ends, and the left and right side walls of the liquid cooling plate are provided with side positioning grooves extending along the length direction;

the box frame comprises a head beam, a tail beam and a pair of boundary beams, wherein the head beam and the tail beam are respectively arranged at the head end and the tail end of the liquid cooling plate, the boundary beams are respectively arranged at the left side and the right side of the liquid cooling plate, the boundary beams are provided with side part plugs, the head beam and the tail beam are provided with end part plugs, the boundary beams and the side parts of the liquid cooling plate are spliced in a positioning mode through positioning grooves and the side part plugs and are sealed and fixed through friction stir welding, and the head beam and the end part plugs of the tail beam are respectively embedded into the openings at the head end and the tail end of the liquid cooling plate and are.

Further, a battery standard box is prepared with a liquid cooling board, install the baffling strengthening rib with inside wall parallel arrangement in the die cavity of liquid cooling board, the baffling strengthening rib will the die cavity is separated and is formed the cooling one-way channel more than 2, and each cooling one-way channel connects gradually and forms the cooling passageway of turning back, inlet and liquid outlet have been seted up to the last lateral wall of liquid cooling board, inlet and liquid outlet are located the intermediate position at the head and the tail both ends of the cooling passageway of turning back respectively, be equipped with the reposition of redundant personnel strengthening rib with baffling strengthening rib parallel arrangement more than 2 in the cooling single channel, the reposition of redundant personnel strengthening rib will the cooling one-way channel is separated and is formed into the reposition of redundant personnel passageway more than 3, and the width of each reposition of redundant personnel passageway increases progressively to both sides.

Furthermore, adapter and water injection well choke are all prepared to inlet, liquid outlet, adapter's bottom is equipped with the flange, adapter's flange embedding inlet, liquid outlet and through friction stir welding with the liquid cooling board is sealed, fixed, water injection well choke level run through behind the head roof beam with adapter threaded connection.

Further, the liquid cooling plate is covered with a heat insulation coating.

The utility model discloses a battery standard case compares with prior art has following beneficial effect: firstly, the liquid cooling plate is integrated with the box body frame, the liquid cooling plate is used as a section bar support at the bottom of the standard box and is used for bearing the weight of the battery, and can also be used for cooling the battery, so that the battery is in the most appropriate temperature range, the arrangement of a box body bottom plate is further omitted, the weight of the whole standard box is reduced, the energy density of the battery box is improved, the endurance mileage is increased, parts and auxiliary materials required for assembly are reduced, the cost of the whole standard box is reduced, and meanwhile, the liquid cooling plate and the box body frame are connected by friction stir welding, so that the sealing performance is good; then, one battery standard box is provided with one liquid cooling plate, so that the pipeline connection between each liquid cooling plate and a cooling pipeline can be reduced under the condition that a plurality of liquid cooling plates exist, the installation is convenient, meanwhile, the liquid cooling plates are not connected with other pipelines except for the adapter joints and the water nozzles which are arranged at the liquid inlet and the liquid outlet in the box body, the leakage risk is reduced, and the safety is high; finally, in order to ensure the cooling effect of battery, the distance of the passageway of turning back in the cooling will be short, will increase the cooling one-way channel, the width of the passageway of turning back in the cooling, lead to the cooling water in the cooling one-way channel, the cooling is turned back the passageway and is unevenly distributed, increases the difference in temperature between the battery, the utility model discloses a battery standard box on the basis of monolithic liquid cooling board, has adopted the design of different reposition of redundant personnel passageway sizes, and is concrete, and the width of reposition of redundant personnel passageway is equipped with the middle part of inlet or liquid outlet and scales up to both sides from the cooling one-way channel, has guaranteed the homogeneity of cooling water in the cooling one-way channel, the cooling passageway of turning back and distributes, and then.

Drawings

Fig. 1 is an explosion diagram of the battery standard box of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view of B in fig. 1.

Fig. 4 is a schematic diagram of the battery standard box of the present invention.

Fig. 5 is a side view of the liquid cooling plate of the present invention.

Fig. 6 is a cross-sectional view taken along line C-C of fig. 5.

Fig. 7 is a cross-sectional view of a liquid-cooled panel of other embodiments.

Fig. 8 is a schematic view of the adapter of the present invention.

Detailed Description

As shown in fig. 1 to 6 and 8, a battery standard box includes a liquid cooling plate 1 and a box frame, the box frame is a rectangular ring structure and surrounds the circumference of the liquid cooling plate 1, and the box frame and the liquid cooling plate 1 are fixed by friction stir welding to form a battery installation cavity with an opening at the upper end; specifically, the cavity of the liquid cooling plate 1 is of a structure with closed left and right sides and open head and tail ends, and the bottoms of the left and right side walls 12 of the liquid cooling plate 1 are provided with lateral positioning grooves extending along the length direction; the box body frame is composed of a head beam 3 and a tail beam 4 which are respectively arranged at the head end and the tail end of the liquid cooling plate 1, and a pair of boundary beams 2 which are respectively arranged at the left side and the right side of the liquid cooling plate 1, the head end and the tail end of the head beam 3, the (left) boundary beam 2, the tail end of the tail beam 4 and the (right) boundary beam 2 are sequentially spliced by an inclined plane 23, the bottom of a body 21 of the boundary beam is provided with a side part plug 22 which extends along the length direction, the bottom of a body 31 of the head beam and the bottom of the body of the tail beam are provided with end plugs 32 which extend along the width direction, the boundary beam 2 and the side part of the liquid cooling plate 1 are positioned and spliced by a positioning groove and the side part plugs 22 and are sealed and fixed by friction stir welding, the end plugs 32 of the head beam 3 and the tail beam 4 are respectively embedded into openings (shown as, therefore, the structural strength of the whole standard box is really ensured, and meanwhile, the sealing performance of the box body is further ensured; adapter 5 and water injection well choke 6 are all prepared to inlet, liquid outlet, and adapter's body 51's bottom is equipped with flange 52, and adapter's flange 52 embedding inlet, liquid outlet and sealed, fixed with the roof of liquid cold drawing through friction stir welding, and water injection well choke 6 level runs through behind the head roof beam 3 with adapter 5 threaded connection, 33 in the picture for set up on the head roof beam and with water injection well choke 6 complex perforation. The flange of the adapter can be assembled with the liquid cooling plate and then subjected to friction stir welding, so that the sealing performance between the liquid cooling plate and the adapter is ensured, and the structural strength is enhanced; in addition, the upper end 53 of the channel of the adapter is provided with threads, can be detachably connected with the water nozzle, and is convenient to detach and assemble.

A battery standard case is prepared with a liquid cooling board 1, install the baffling strengthening rib 13 with inside wall 12 parallel arrangement in the die cavity of liquid cooling board 1, baffling strengthening rib 13 separates the die cavity and forms the cooling one-way channel more than 2, each cooling one-way channel connects gradually and forms the cooling passageway of turning back, inlet and liquid outlet have been seted up to the last lateral wall 12 of liquid cooling board 1, inlet and liquid outlet are located the intermediate position at the head and the tail both ends of cooling passageway of turning back respectively, be equipped with the reposition of redundant personnel strengthening rib 14 more than 2 with baffling strengthening rib 13 parallel arrangement in the cooling single channel, reposition of redundant personnel strengthening rib 14 separates the cooling one-way channel and forms the reposition of redundant personnel passageway more than 3, the width of each reposition of redundant personnel passageway increases progressively to both sides.

Specifically, in this embodiment, there are 1 deflecting reinforcing rib, the cavity is divided into 2 cooling one-way channels, which are respectively the first cooling single channel D1 and the second cooling single channel D2, each of the first cooling single channel D1 and the second cooling single channel D2 is provided with 13 deflecting reinforcing ribs 13, and the cooling one-way channels are divided into 14 branch channels, wherein two sides of the two seventh branch channels g are sequentially provided with a sixth branch channel f, a fifth branch channel e, a fourth branch channel D, a third branch channel c, a second branch channel b and a first branch channel a from inside to outside, and widths of the seventh branch channel g, the sixth branch channel f, the fifth branch channel e, the fourth branch channel D, the third branch channel c, the second branch channel b and the first branch channel a are sequentially increased.

In the figure 11 the bottom wall of the cavity of the liquid-cooled plate is shown.

In other embodiments, such as shown in fig. 7, when 3 baffle ribs are provided, 4 cooling single channels are formed, namely D1', D2', D3 'and D4', respectively, to form a serpentine return channel.

Claims

1. The utility model provides a battery standard case, its includes liquid cooling board and box frame, its characterized in that: the box frame is of an annular structure and encloses the periphery of the liquid cooling plate, and the box frame and the liquid cooling plate are fixed through friction stir welding to form a battery installation cavity with an upper end opening.

2. A battery standard case according to claim 1, wherein: the die cavity of the liquid cooling plate is of a structure with closed left and right sides and open head and tail ends, and the left and right side walls of the liquid cooling plate are provided with lateral positioning grooves extending along the length direction;

3. A battery standard case according to claim 1, wherein: a battery standard case is prepared with a liquid cooling board, install the baffling strengthening rib with inside wall parallel arrangement in the die cavity of liquid cooling board, the baffling strengthening rib will the die cavity is separated and is formed the cooling one-way channel more than 2, and each cooling one-way channel connects gradually and forms the cooling passageway of turning back, inlet and liquid outlet have been seted up to the last lateral wall of liquid cooling board, inlet and liquid outlet are located the intermediate position at the head and the tail both ends of the cooling passageway of turning back respectively, be equipped with the reposition of redundant personnel strengthening rib with baffling strengthening rib parallel arrangement more than 2 in the cooling one-way channel, the reposition of redundant personnel strengthening rib will the cooling one-way channel is separated and is formed into the reposition of redundant personnel passageway more than 3, and the width of each reposition of redundant personnel passageway increases progressively.

4. A battery standard case according to claim 3, wherein: adapter and water injection well choke have all been prepared to inlet, liquid outlet, adapter's bottom is equipped with the flange, adapter's flange embedding inlet, liquid outlet and through friction stir welding with the liquid cooling board is sealed, fixed, water injection well choke level run through behind the head roof beam with adapter threaded connection.

5. A battery standard case according to claim 1, wherein: the liquid cooling plate is covered with a heat insulation coating.