CN216720189U

CN216720189U - Battery box

Info

Publication number: CN216720189U
Application number: CN202122861331.2U
Authority: CN
Inventors: 张永明; 贺月辉; 钟帅波; 陈斌斌; 文立
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-06-10
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a battery box, which comprises a bottom plate, side beams connected to two sides of the bottom plate and cross beams connected to the other two sides of the bottom plate, wherein an accommodating cavity with an upward opening is formed by the bottom plate, the two side beams and the two cross beams, a plurality of branch channels are arranged in the bottom plate at intervals along the length extension direction of the side beams, the branch channels extend along the length direction of the cross beams, confluence grooves are respectively arranged at the positions of the two side beams, which are opposite to the branch channels, and two ends of each branch channel are respectively communicated with the two confluence grooves.

Description

Battery box

Technical Field

The utility model relates to the technical field of power batteries, in particular to a battery box.

Background

The traditional shell and the heat dissipation system are mutually separated and independent structures, assembly processes need to be increased, assembly efficiency is low, the traditional shell and the heat dissipation system need to be mechanically or adhesively fixed when the traditional shell and the heat dissipation system are assembled, and the thickness of the adhesive can not be ensured, so that heat conductivity is reduced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a battery box, which solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.

The solution of the utility model for solving the technical problem is as follows:

a battery box comprises a bottom plate, side beams connected to two sides of the bottom plate and cross beams connected to the other two sides of the bottom plate, wherein a containing cavity with an upward opening is formed by the bottom plate, the two side beams and the two cross beams in a surrounding mode, a plurality of branch channels are arranged in the bottom plate at intervals along the length extending direction of the side beams, the branch channels extend along the length direction of the cross beams, confluence grooves are formed in the positions, right opposite to the branch channels, of the two side beams, and two ends of each branch channel are respectively communicated with the two confluence grooves.

The technical scheme at least has the following beneficial effects: the bottom plate, enclose into one between two curb girders and two crossbeams and protect the battery, the structure that holds, and add heat radiation structure at bottom plate and curb girder itself, it is concrete, to the inslot input coolant liquid that converges, coolant liquid from this inslot that converges flows to a plurality of subchannel, improve the heat dissipation coverage area to the bottom plate, can take away the heat of battery conduction to bottom plate better, coolant liquid after the heat transfer flows into another groove that converges from the subchannel, take away the heat simultaneously, so combine heat radiation structure to the shell in, the holistic volume has been reduced, and increased the area of contact with the battery, and the heat-dissipating effect is improved.

As a further improvement of the above technical solution, one of the confluence grooves includes a water inlet section and a first confluence section connected to each other, and one end of the branch channel is connected to the first confluence section. The port of the water inlet section can be opened at any position of the side beam for introducing cooling liquid, and the cooling liquid enters the first confluence section from the water inlet section and then is shunted to each branch channel by the first confluence section.

As a further improvement of the above technical solution, the water inlet section and the first confluence section both extend along a straight line direction, a water inlet channel is arranged at a position of the bottom plate facing the water inlet section, a water inlet interface is arranged at a position of the top surface of the bottom plate facing the water inlet channel, and the water inlet interface is communicated with the water inlet section through the water inlet channel. The water inlet section is also arranged at the position of the side beam opposite to the bottom plate, the water inlet connector is arranged on the bottom plate and communicated to the water inlet section through the water inlet channel, so that the water inlet position and the sub-channel are kept at a similar height, and the flow of cooling liquid is facilitated.

As a further improvement of the technical scheme, the water inlet interface is connected with a water inlet pipe, and one end of the water inlet pipe, which is far away from the water inlet interface, penetrates through one cross beam and extends outwards. The inlet tube is guided to the outside from the crossbeam, conveniently connects the pipeline of peripheral hardware.

As a further improvement of the above technical solution, another one of the confluence grooves includes a water outlet section and a second confluence section connected to each other, and the other end of the branch channel is connected to the second confluence section. The port of the water outlet section can be opened at any position of the side beam and used for introducing cooling liquid, and the cooling liquid enters the first confluence section from the water inlet section and then is shunted to each shunt passage by the first confluence section.

As a further improvement of the above technical solution, the water outlet section and the second confluence section both extend along a straight line direction, a water outlet channel is arranged at a position of the bottom plate facing the water outlet section, a water outlet port is arranged at a position of the top surface of the bottom plate facing the water outlet channel, and the water outlet port is communicated with the water outlet section through the water outlet channel. Similarly, the water outlet section is arranged at the position of the side beam opposite to the bottom plate, the water outlet port is arranged on the bottom plate and communicated to the water outlet section through the water outlet channel, so that the water inlet position and the sub-channel are kept at a similar height, and the cooling flow is facilitated.

As a further improvement of the technical scheme, the water outlet connector is connected with a water outlet pipe, and one end of the water outlet pipe, which is far away from the water outlet connector, penetrates through one cross beam and extends outwards. The water outlet pipe is guided to the outer side from the cross beam, and is conveniently connected with a peripheral pipeline.

As a further improvement of the above technical solution, a plurality of partition plates are arranged on the top surface of the bottom plate along the length direction of the side beams, and both ends of the partition plates are connected to the two side beams. The plurality of partition plates arranged on the bottom plate can divide the enclosed accommodating cavity into a plurality of independent spaces, and heat on the side face of the battery can be guided to the bottom plate through the partition plates, so that the heat dissipation effect is improved.

As a further improvement of the above technical solution, the partition plate is provided with flow dividing channels along the length extending direction thereof, the two side beams are provided with flow collecting channels therein, the flow collecting channels extend along the length extending direction of the side beams, the side beams are provided with flow dividing ports at positions facing all the flow dividing channels, all the flow dividing channels are communicated with the flow collecting channels through all the flow dividing ports one by one, one of the side beams is provided with an input interface, the input interface is communicated with the flow collecting channels on the side beam where the input interface is located, the other side beam is provided with an output interface, and the output interface is communicated with the flow collecting channels on the side beam where the output interface is located. The cooling liquid can be introduced into the converging channel in one side beam from the input interface, the cooling liquid in the converging channel is shunted to the shunting channel opposite to the converging channel through the shunting port, so that the cooling liquid flows in the partition plate, then flows into the converging channel of the side beam from the shunting port on the other side beam, and finally is output from the output interface, therefore, the heat conducted to the partition plate by the battery can be directly taken away by the cooling liquid, and the heat dissipation effect is further improved.

As a further improvement of the above technical solution, a plurality of the diversion channels in one partition plate are arranged at intervals in the up-down direction, a plurality of the confluence channels in two of the side beams are arranged at intervals in the up-down direction, the end parts of all the diversion channels are communicated with all the confluence channels on the side beams one by one, the input interface is communicated with all the confluence channels on the side beams where the input interface is located, and the output interface is communicated with all the confluence channels on the side beams where the output interface is located. A plurality of heat dissipation structures arranged in the vertical direction are formed between the side beams and the partition plates, one heat dissipation structure comprises a plurality of division plates, flow dividing channels and flow converging channels, the flow converging channels are located at the same height, the flow converging channels correspond to the two ends of the flow dividing channels, cooling liquid flowing into the heat dissipation structure from the input interface is firstly distributed to the flow converging channels of different heat dissipation structures and then distributed to the flow dividing channels corresponding to the flow dividing channels, so that the flowing uniformity of the cooling liquid can be improved, the flowing and heat dissipation effect area of the cooling liquid on each division plate is increased, and the heat dissipation effect is further improved.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a top plan view of the overall structure of the present invention;

FIG. 2 is a schematic view of the present invention in partial cross-section;

FIG. 3 is an enlarged view of part A of FIG. 2;

FIG. 4 is a side view of the overall structure of the present invention;

fig. 5 is a schematic view of a sectional structure B-B of fig. 4.

In the drawings: 100-bottom plate, 110-branch channel, 120-water inlet channel, 130-water outlet channel, 200-side beam, 210-confluence groove, 211-water inlet section, 212-first confluence section, 213-water outlet section, 214-second confluence section, 220-confluence channel, 300-cross beam, 310-water inlet pipe, 320-water outlet pipe, 400-separation plate and 410-diversion channel.

Detailed Description

The conception, the specific structure and the technical effects produced by the present invention will be clearly and completely described in conjunction with the embodiments and the attached drawings, so as to fully understand the objects, the features and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the utility model can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1, 2 and 3, a battery box includes a bottom plate 100, side beams 200 connected to two sides of the bottom plate 100, and cross beams 300 connected to the other two sides of the bottom plate 100, wherein a receiving cavity with an upward opening is defined by the bottom plate 100, the two side beams 200, and the two cross beams 300, a plurality of branch channels 110 are arranged in the bottom plate 100 at intervals along a length extending direction of the side beams 200, the branch channels 110 extend along the length direction of the cross beams 300, confluence grooves 210 are respectively arranged at positions where the two side beams 200 face the branch channels 110, and two ends of each branch channel 110 are respectively communicated with the two confluence grooves 210.

By the above, the bottom plate 100, enclose into a structure to battery protection, hold between two curb girders 200 and two crossbeams 300, and add heat radiation structure at bottom plate 100 and curb girder 200 itself, it is concrete, to the interior input coolant liquid of a groove 210 that converges, the coolant liquid from this converge groove 210 internal shunt to a plurality of subchannel 110, improve the heat dissipation coverage area to bottom plate 100, can take away the heat of battery conduction to bottom plate 100 better, coolant liquid after the heat transfer flows into another groove 210 that converges from subchannel 110, take away the heat simultaneously, so combine heat radiation structure to the shell in, the holistic volume has been reduced, and increased the area of contact with the battery, improve the radiating effect.

As shown in fig. 4 and 5, as a further structural embodiment for the confluence grooves 210, one of the confluence grooves 210 includes a water inlet section 211 and a first confluence section 212 connected to each other, one end of the branch channel 110 is connected to the first confluence section 212, and a port of the water inlet section 211 may be opened at any position of the side sill 200 for introducing a coolant, which enters the first confluence section 212 from the water inlet section 211 and then is branched to each branch channel 110 by the first confluence section 212. Another of the merging grooves 210 includes a water outlet section 213 and a second merging section 214 connected to each other, the other end of the branch passage 110 is connected to the second merging section 214, and similarly, a port of the water outlet section 213 may be opened at any position of the side member 200 for introducing the coolant, which enters the first merging section 212 from the water inlet section 211, and then is branched to each branch passage 110 by the first merging section 212.

The external pipelines are connected to the water inlet section 211 or the water outlet section 213, holes can be formed in the side beam 200 or the bottom plate 100 for connection, and the side beam has multiple structural modes, in this embodiment, the water inlet section 211 and the first confluence section 212 both extend along a straight line direction, the bottom plate 100 is provided with a water inlet channel 120 at a position facing the water inlet section 211, the top surface of the bottom plate 100 is provided with a water inlet interface at a position facing the water inlet channel 120, and the water inlet interface is communicated with the water inlet section 211 through the water inlet channel 120. The water inlet section 211 is also arranged at the position of the side beam 200 facing the bottom plate 100, the water inlet port is arranged on the bottom plate 100 and communicated to the water inlet section 211 through the water inlet channel 120, so that the water inlet position and the sub-channel 110 are kept at a similar height, and the flow of the cooling liquid is facilitated. The water outlet section 213 and the second confluence section 214 both extend along a linear direction, a water outlet channel 130 is arranged at a position of the bottom plate 100, which is opposite to the water outlet section 213, a water outlet port is arranged at a position of the top surface of the bottom plate 100, which is opposite to the water outlet channel 130, and the water outlet port is communicated with the water outlet section 213 through the water outlet channel 130. Similarly, the water outlet section 213 is disposed at a position of the side beam 200 facing the bottom plate 100, and the water outlet port is disposed on the bottom plate 100 and communicated to the water outlet section 213 through the water outlet channel 130, so that the water inlet position is maintained at a similar height to the height of the sub-channel 110, which is beneficial for cooling flow.

The water inlet interface and the water outlet interface are arranged on the bottom plate 100, and the pipeline of the peripheral can be vertically connected to the water inlet interface or the water outlet interface, in this embodiment, the water inlet interface is connected with a water inlet pipe 310, one end of the water inlet pipe 310 far away from the water inlet interface penetrates through one of the cross beams 300 and extends outwards. Similarly, the water outlet connector is connected with a water outlet pipe 320, and one end of the water outlet pipe 320, which is far away from the water outlet connector, penetrates through one of the cross beams 300 and extends outwards. The inlet tube 310 and the outlet tube 320 are both guided to the outside from the beam 300, and are convenient to connect with the external pipelines, in some embodiments, the inlet tube 310 and the outlet tube 320 can penetrate out of the same beam 300, the connected external pipelines can be conveniently arranged, and the whole battery pack shell can be better arranged.

As a further example of the inner structure of the receiving chamber, a plurality of partition plates 400 are arranged on the top surface of the bottom plate 100 along the length direction of the side members 200, and both ends of the partition plates 400 are connected to both of the side members 200. The plurality of partitions 400 disposed on the bottom plate 100 may subdivide the enclosed receiving cavity into a plurality of independent spaces, and may guide heat from the sides of the battery to the bottom plate 100 through the partitions 400, thereby improving the heat dissipation effect.

The heat of the battery, which is inserted between the two partitions 400, is guided to the partitions 400, and in order to further improve the overall heat dissipation effect, in this embodiment, the partition plate 400 is provided therein with a flow dividing passage 410 along the length extension direction thereof, the two side members 200 are provided therein with a flow collecting passage 220, the converging channel 220 extends along the length extending direction of the side beams 200, the positions of the side beams 200 facing all the diversion channels 410 are provided with diversion ports, all the diversion channels 410 are communicated with the converging channel 220 through all the diversion ports one by one, one side beam 200 is provided with an input interface, the input port is communicated with the confluence channel 220 on the side beam 200 where the input port is positioned, the other side beam 200 is provided with an output port, the output port is in communication with the manifold 220 on the side member 200 where it is located. The cooling liquid can be introduced into the confluence channel 220 in one side beam 200 from the input interface, the cooling liquid in the confluence channel 220 is shunted to the shunting channel 410 opposite to the confluence channel through the shunting port, so that the cooling liquid flows in the partition plate 400, then flows into the confluence channel 220 of the side beam 200 from the shunting port on the other side beam 200, and finally is output from the output interface, therefore, the heat conducted to the partition plate 400 by the battery can be directly taken away by the cooling liquid, and the heat dissipation effect is further improved.

In practical application, the input interface and the output interface can be arranged on one side of the side beam 200 departing from the containing cavity, so that the peripheral pipeline can be conveniently connected.

In the above embodiment, if only one dividing channel 410 is provided in one dividing plate 400, the heat dissipation area directly acted by the dividing channel 410 is limited, and if the heat dissipation area needs to be increased, the height of the dividing channel 410 can be increased, but in this embodiment, a plurality of dividing channels 410 are arranged in one dividing plate 400 at intervals along the vertical direction, a plurality of collecting channels 220 are arranged in two side beams 200 at intervals along the vertical direction, the ends of all the dividing channels 410 are in one-to-one communication with all the collecting channels 220 on the side beams 200, the input interface is in communication with all the collecting channels 220 on the side beams 200 where the input interface is located, and the output interface is in communication with all the collecting channels 220 on the side beams 200 where the output interface is located. A plurality of heat dissipation structures arranged in the vertical direction are formed between the side beams 200 and the partition plates 400, one heat dissipation structure comprises a plurality of flow dividing channels 410 positioned at the same height on the partition plates 400 and bus channels 220 corresponding to the two ends of the flow dividing channels 410, cooling liquid flowing in from an input interface is firstly distributed to the bus channels 220 of different heat dissipation structures and then distributed to the flow dividing channels 410 corresponding to the bus channels, so that the flowing uniformity of the cooling liquid can be improved, the flowing and heat dissipation effect area of the cooling liquid on each partition plate 400 is increased, and the heat dissipation effect is further improved.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous modifications and substitutions without departing from the spirit of the present invention and within the scope of the appended claims.

Claims

1. A battery box, its characterized in that: the novel combined type floor is characterized by comprising a base plate (100), side beams (200) connected to two sides of the base plate (100) and cross beams (300) connected to the other two sides of the base plate (100), wherein the base plate (100), the two side beams (200) and the two cross beams (300) form a containing cavity with an upward opening, a plurality of branch channels (110) are arranged in the base plate (100) at intervals along the length extending direction of the side beams (200), the branch channels (110) extend along the length direction of the cross beams (300), the position of each of the side beams (200) right opposite to the corresponding branch channel (110) is provided with a confluence groove (210), and two ends of each of the branch channels (110) are respectively communicated with the confluence grooves (210).

2. A battery box according to claim 1, characterized in that: one confluence groove (210) comprises a water inlet section (211) and a first confluence section (212) which are connected with each other, and one end of the branch channel (110) is connected to the first confluence section (212).

3. A battery box according to claim 2, characterized in that: the water inlet section (211) and the first confluence section (212) extend along the straight line direction, the bottom plate (100) is over against the water inlet section (211) and is provided with a water inlet channel (120), the top surface of the bottom plate (100) is over against the water inlet channel (120) and is provided with a water inlet interface, and the water inlet interface is communicated with the water inlet section (211) through the water inlet channel (120).

4. A battery box according to claim 3, characterized in that: the interface connection of intaking has inlet tube (310), inlet tube (310) are kept away from the one end of the interface of intaking passes one crossbeam (300) and outwards stretches out.

5. A battery box according to claim 2, characterized in that: the other confluence groove (210) comprises a water outlet section (213) and a second confluence section (214) which are connected with each other, and the other end of the branch channel (110) is connected to the second confluence section (214).

6. A battery box according to claim 5, characterized in that: the water outlet section (213) and the second confluence section (214) extend along a straight line direction, a water outlet channel (130) is arranged at the position, facing the water outlet section (213), of the bottom plate (100), a water outlet interface is arranged at the position, facing the water outlet channel (130), of the top surface of the bottom plate (100), and the water outlet interface is communicated with the water outlet section (213) through the water outlet channel (130).

7. A battery box according to claim 6, characterized in that: the water outlet connector is connected with a water outlet pipe (320), and one end, far away from the water outlet connector, of the water outlet pipe (320) penetrates through one cross beam (300) and extends outwards.

8. A battery box according to claim 1, characterized in that: the top surface of the bottom plate (100) is provided with a plurality of partition plates (400) arranged along the length direction of the side beams (200), and two ends of each partition plate (400) are connected to the two side beams (200).

9. A battery box according to claim 8, characterized in that: dividing passages (410) are arranged in the dividing plate (400) along the length extending direction of the dividing plate, converging passages (220) are arranged in the side beams (200), the converging passages (220) extend along the length extending direction of the side beams (200), the side beams (200) are just opposite to all the positions of the dividing passages (410) are provided with dividing ports, all the dividing passages (410) are communicated with the converging passages (220) through all the dividing ports one by one, one of the side beams (200) is provided with an input interface, the input interface is communicated with the converging passages (220) on the side beams (200), the other side beams (200) are provided with output interfaces, and the output interfaces are communicated with the converging passages (220) on the side beams (200).

10. A battery box according to claim 9, characterized in that: a plurality of the flow dividing channels (410) in one partition plate (400) are arranged at intervals in the vertical direction, a plurality of the flow collecting channels (220) in two side beams (200) are arranged at intervals in the vertical direction, the end parts of all the flow dividing channels (410) are communicated with all the flow collecting channels (220) on the side beams (200) in a one-to-one manner, the input interface is communicated with all the flow collecting channels (220) on the side beams (200) where the input interface is located, and the output interface is communicated with all the flow collecting channels (220) on the side beams (200) where the output interface is located.