CN-122000579-A - Battery device and electric equipment

Abstract

The application discloses a battery device and electric equipment. The battery device comprises a box body, a battery unit component and a heat management component, wherein the box body is provided with an accommodating space, the box body comprises a limiting beam, the battery unit component is arranged in the accommodating space, the two sides of the battery unit component along the first direction are respectively provided with the limiting beam, the heat management component is arranged in the accommodating space and comprises a plurality of heat exchange pieces, the plurality of heat exchange pieces are arranged along the second direction, the battery unit is connected between two adjacent heat exchange pieces in a heat conduction mode, the heat exchange pieces comprise a current collector and a body part, the current collector is arranged on one side of the body part along the height direction of the box body and is connected with the body part, the current collector and the body part extend along the first direction, the inside of the body part is provided with a heat exchange flow channel, the current collector is used for guiding heat exchange medium into the heat exchange flow channel, and is used for guiding out the heat exchange medium in the heat exchange flow channel, and the body part is respectively connected with the limiting beams positioned on the two sides of the battery unit component along the first direction.

Inventors

• LIU JIANGMING
• LI CANCAN
• MA JUN

Assignees

• 宁德时代新能源科技股份有限公司

Dates

Publication Date

20260508

Application Date

20260410

Claims (18)

1. 1. A battery device, characterized by comprising: the box body is provided with an accommodating space and comprises a limiting beam; The battery cell assembly is arranged in the accommodating space, and the limiting beams are respectively arranged on two sides of the battery cell assembly along the first direction; The heat management component is arranged in the accommodating space and comprises a plurality of heat exchange pieces, the plurality of heat exchange pieces are arranged along a second direction, the battery cells are connected between two adjacent heat exchange pieces in a heat conduction mode, the heat exchange pieces comprise a current collector and a body part, the current collector is arranged on one side of the body part and connected with the body part along the height direction of the box body, the current collector and the body part extend along the first direction, a heat exchange flow channel is arranged in the body part, the current collector is used for guiding a heat exchange medium into the heat exchange flow channel and guiding the heat exchange medium in the heat exchange flow channel, the body part is connected with limit beams positioned on two sides of the battery cell assembly along the first direction, the first direction and the second direction are intersected, and a plane where the first direction and the second direction are located together is intersected with the height direction of the box body; The body portion includes heat exchange riser and heat exchange diaphragm, the heat exchange diaphragm is located the heat exchange riser deviates from the one side of electric current collector, the heat exchange diaphragm with the heat exchange riser is crossing and interconnect, the heat exchange riser with at least one of the heat exchange diaphragm is followed the both ends one-to-one of first direction with battery cell subassembly is followed the both sides of first direction spacing roof beam is connected.
2. 2. The battery device of claim 1, wherein the heat exchange cross plates of the plurality of heat exchange members form a bottom wall of the case, or wherein the case includes a bottom wall, the heat exchange cross plates being located on a side of the heat exchange vertical plates facing away from the bottom wall.
3. 3. The battery device according to claim 1, wherein the heat exchange flow passage includes a first heat exchange flow passage and a second heat exchange flow passage, the first heat exchange flow passage is provided in an interior of the heat exchange vertical plate, the second heat exchange flow passage is provided in an interior of the heat exchange horizontal plate, a diversion groove and a confluence groove are provided on a side of the heat exchange horizontal plate facing the heat exchange vertical plate, the diversion groove and the confluence groove are provided at intervals in the first direction, the first heat exchange flow passage is respectively communicated with the diversion groove and the confluence groove, the second heat exchange flow passage is respectively communicated with the diversion groove and the confluence groove, one of the diversion groove and the confluence groove is configured to guide a heat exchange medium flowing through the heat exchange vertical plate into the second heat exchange flow passage, and the other is configured to guide the heat exchange medium of the second heat exchange flow passage out.
4. 4. A battery device according to claim 3, wherein the heat exchange cross plate has a housing chamber and first and second support ribs extending in the first direction, respectively, a part of the shunt grooves and a part of the bus bar grooves are formed in the first support rib, the first support rib is provided with the second support rib on at least one side in the second direction, and the first support rib, the second support rib and an inner wall of the housing chamber define the second heat exchange flow passage together.
5. 5. The battery device according to claim 4, wherein the second heat exchange flow passage includes a first branch flow passage and a second branch flow passage, the second support ribs are provided on both sides of the first support rib in the second direction, the second support rib on one side of the first support rib in the second direction is communicated with the first support rib and a part of the inner wall of the accommodating chamber to define the first branch flow passage, the second support rib on the other side of the first support rib in the second direction is communicated with the first support rib and the other part of the inner wall of the accommodating chamber to define the second branch flow passage, and the flow dividing grooves are communicated with the first branch flow passage and the second branch flow passage, respectively.
6. 6. The battery device according to claim 4, wherein the heat exchange member further comprises a first blocking member, the two ends of the heat exchange transverse plate along the first direction are respectively provided with the first blocking member, one of the first blocking members blocks one end of the accommodating cavity, the other first blocking member blocks the other end of the accommodating cavity, a third supporting rib is arranged in the heat exchange transverse plate, at least one side of the first supporting rib along the second direction is provided with the third supporting rib, the third supporting rib is located on one side of the second supporting rib and is connected with or abutted against one end of the second supporting rib, and the third supporting rib and the first blocking member located on the same side of the second supporting rib are arranged at intervals along the first direction to separate the second heat exchange flow passage into bent flow passages.
7. 7. The battery device according to claim 6, wherein a side wall of the shunt groove is provided with a lead-out opening communicated with the shunt groove, and the lead-out opening is located between the third support rib and the first blocking member on the same side as the second support rib and is communicated with the second heat exchange flow passage along the first direction.
8. 8. The battery device according to claim 6, wherein the third support ribs are disposed on both sides of the first support rib along the second direction, the third support ribs on both sides of the first support rib along the second direction are disposed on the same side of the second support rib, and each of the third support ribs and the first blocking member on the same side of the second support rib are disposed at intervals and separate the second heat exchange flow path into bent flow paths.
9. 9. The battery device according to claim 3, wherein the heat exchange riser has a first chamber and a second chamber inside, the first chamber and the second chamber are arranged at intervals along the first direction, the first chamber is communicated with the shunt groove, the second chamber is communicated with the confluence groove, the first chamber and the second chamber together form the first heat exchange flow passage, two ends of the current collector along the first direction are provided with a first port and a second port in a one-to-one correspondence manner, the first chamber is communicated with the first port, and the second chamber is communicated with the second port.
10. 10. The battery device of claim 9, wherein the manifold includes a first manifold and a second manifold, the first manifold and the second manifold being spaced apart along the second direction, the first chamber being in communication with the first port through the first manifold and the second chamber being in communication with the second port through the second manifold.
11. 11. The battery device of claim 10, wherein the current collector further comprises a first plug and a second plug, the first plug and the second plug are connected to two ends of the current collector in the first direction in a one-to-one correspondence manner, the first plug plugs the second current collector, the first plug is provided with the first port communicated with the first current collector, the second plug plugs the first current collector, and the second plug is provided with the second port communicated with the second current collector.
12. 12. The battery device according to claim 9, wherein the heat exchange riser includes a first plate body and a second plate body arranged in the first direction, the first plate body and the second plate body being respectively connected to the heat exchange cross plate, the first plate body having the first chamber inside and the second plate body having the second chamber inside; And/or the number of the first chambers is a plurality, the first chambers are arranged at intervals along the first direction, and each first chamber is communicated with the shunt groove; And/or the number of the second chambers is a plurality of, the second chambers are arranged at intervals along the first direction, and each second chamber is communicated with the confluence groove.
13. 13. The battery device according to claim 4, wherein the heat exchange transverse plate is internally provided with a containing cavity and a first supporting rib, the first supporting rib is arranged in the containing cavity and extends along the first direction, and the projection of the heat exchange vertical plate on the heat exchange transverse plate is at least partially overlapped with the first supporting rib along the height direction of the box body; And/or, along the second direction, the converging groove penetrates through the first supporting rib.
14. 14. The battery device of any one of claims 1-13, wherein the battery cell comprises two first sides disposed opposite in the first direction and two second sides disposed opposite in the second direction, the first sides having an area greater than an area of the second sides, the second sides being in thermally conductive connection with the heat exchange member.
15. 15. The battery device according to any one of claims 1-13, wherein a side of the stopper beam facing the battery cell is provided with a recess for receiving a part of the current collector.
16. 16. The battery device of claim 15, wherein the spacing beam has a cavity, the recess communicates with the cavity, the current collectors of two adjacent heat exchange members communicate with each other in the same end of the first direction through a pipe, and the pipe is disposed in the cavity.
17. 17. A powered device comprising a battery device as recited in any of claims 1-16, wherein the battery device is configured to provide electrical energy to the powered device.
18. 18. The powered device of claim 17, wherein the powered device is a vehicle, and wherein a direction of travel of the vehicle is the same as the first direction.

Description

Battery device and electric equipment Technical Field The application relates to the technical field of batteries, in particular to a battery device and electric equipment. Background In the cyclic charge and discharge process of the battery monomer in the battery, the case of the battery can bear repeated expansion force, so that the problem of strength reduction of the case is caused, and the case is easy to crack, deform seriously and the like. Disclosure of Invention In view of the above problems, the application provides a battery device and electric equipment, wherein a current collector is arranged above a body part of a heat exchange member, and the body part is connected with a limiting beam, so that the strength of the limiting beam can be improved, and further, the situation that a box body is cracked due to deformation can be reduced. In a first aspect, the present application provides a battery device comprising: the box body is provided with an accommodating space and comprises a limiting beam; The battery cell assembly is arranged in the accommodating space, and limiting beams are respectively arranged on two sides of the battery cell assembly along the first direction; The heat management component is arranged in the accommodating space and comprises a plurality of heat exchange pieces, the plurality of heat exchange pieces are arranged along the second direction, a battery monomer is connected between two adjacent heat exchange pieces in a heat conduction mode, the heat exchange pieces comprise a current collector and a body part, the current collector is arranged on one side of the body part and connected with the body part along the height direction of the box body, the current collector and the body part extend along the first direction, a heat exchange flow channel is formed in the body part, the current collector is used for guiding heat exchange media into the heat exchange flow channel and guiding the heat exchange media in the heat exchange flow channel out, the body part is connected with limit beams positioned on two sides of the battery monomer component along the first direction respectively, the first direction and the second direction are intersected, and a plane where the first direction and the second direction are located together is intersected with the height direction of the box body. The body part of the heat exchange piece is connected with the limit beam of the box body, and the current collector is connected to one side of the body part along the height direction of the box body, so that the structural strength and the deformation resistance of the limit beam are improved. In the process of generating expansion force by circularly charging and discharging the battery monomer, the body part can strengthen the limit beam, reduce the deformation and cracking risk of the limit beam, and improve the overall structural stability and the service life of the battery box body. Meanwhile, the current collector is arranged at the top of the heat exchange piece, compared with the current collector which is arranged at the two ends of the body part and connected with the limiting beam, the possibility of heat exchange medium leakage caused by the fact that the current collector and the body part are pulled apart in the expansion process can be reduced, and the heat exchange medium leakage device is beneficial to improving the working reliability of the heat management component. In some embodiments, the body portion includes only a heat exchange riser, the side of the battery cell along the second direction is thermally conductively connected to the heat exchange riser, and the current collector is connected to the top of the heat exchange riser. Compared with the current collector arranged at two ends of the heat exchange vertical plate and connected with the limiting beam, the heat exchange vertical plate can reduce the possibility of heat exchange medium leakage caused by the fact that the current collector and the heat exchange vertical plate are pulled apart in the expansion process, and is beneficial to improving the working reliability of the heat management component. In some embodiments, the body portion includes a heat exchange vertical plate and a heat exchange transverse plate, the heat exchange transverse plate is located at one side of the heat exchange vertical plate away from the current collector, the heat exchange transverse plate intersects with the heat exchange vertical plate and is connected with each other, and two ends of at least one of the heat exchange vertical plate and the heat exchange transverse plate along the first direction are in one-to-one correspondence to limit beams on two sides of the battery cell assembly along the first direction; The heat exchange transverse plates of the heat exchange pieces form the bottom wall of the box body, or the box body comprises the bottom wall, and the heat exchange transverse plates are positioned on one side