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CN-121983757-A - Battery cell module, battery device and electric equipment

CN121983757ACN 121983757 ACN121983757 ACN 121983757ACN-121983757-A

Abstract

The application provides a battery cell module, a battery device and electric equipment. The battery cell module is used for a battery device and comprises a plurality of battery cell modules, each battery cell module comprises a plurality of battery cells which are distributed along a first direction, the two opposite ends of each battery cell along a second direction are respectively provided with a positive electrode and a negative electrode, the positive electrodes and the negative electrodes of the adjacent battery cells which are positioned at the same end are sequentially and electrically connected, the positive electrode of one battery cell positioned at the end part of the first direction is led out as the positive electrode, the negative electrode of the other battery cell positioned at the end part of the first direction is led out as the negative electrode, and the two adjacent battery cell modules are electrically connected through the positive electrode leading-out and the negative electrode leading-out, so that the problem that the battery cell module cannot realize high-current quick charging, the charging time of electric equipment is longer, and the charging efficiency of the electric equipment is lower is solved.

Inventors

  • WANG XIAOLONG
  • Bai Heshun
  • ZHANG XIHU

Assignees

  • 比亚迪股份有限公司

Dates

Publication Date
20260505
Application Date
20241031

Claims (20)

  1. 1. A battery cell module for a battery device (20), the battery cell module (10) comprising: The battery cell assembly (100) comprises a plurality of battery cells (101) which are arranged along a first direction, wherein positive electrodes (1011) and negative electrodes (1012) are arranged at two opposite ends of each battery cell (101) along a second direction, the positive electrodes (1011) and the negative electrodes (1012) which are positioned at the same end of each battery cell (101) are electrically connected in sequence, the positive electrode (1011) of one battery cell (101) positioned at the end part of the first direction is a positive electrode lead-out (1013) and the negative electrode (1012) of the other battery cell is a negative electrode lead-out (1014); two adjacent cell assemblies (100) are electrically connected through the positive electrode lead (1013) and the negative electrode lead (1014).
  2. 2. A cell module according to claim 1, characterized in that two of the positive leads (1013) of one of the two cells (101) at the end of the first direction are connected in parallel to form a total positive lead and two of the negative leads (1014) of the other are connected in parallel to form a total negative lead, with adjacent two of the cell assemblies (100) being connected in series through the total positive lead and the total negative lead.
  3. 3. The cell module according to claim 2, wherein the total positive extraction is configured as a total positive extraction (1015) and the total negative extraction is configured as a total negative extraction (1016), adjacent ones of the total positive extraction (1015) of adjacent two of the cell assemblies (100) being electrically connected to the total negative extraction (1016) to connect adjacent two of the cell assemblies (100) in series.
  4. 4. A cell module according to claim 3, wherein the total positive lead (1015) and the total negative lead (1016) each comprise a lead (200) and a parallel connection (201), the parallel connection (201) of the total positive lead (1015) being connected at one end to one of the positive leads (1013) and at the other end to the lead (200) of the total positive lead (1015), the lead (200) of the total positive lead (1015) being connected in parallel to the other positive lead (1013), the parallel connection (201) of the total negative lead (1016) being connected at one end to one of the negative leads (1014) and at the other end to the lead (200) of the total negative lead (1016), the leads (200) of the total negative lead (1016) being connected in parallel to the other of the negative leads (200), the adjacent leads (200) of the adjacent two cell modules (100) being connected in series with the total negative lead (200) of the adjacent positive lead (200) of the cell module (100).
  5. 5. The battery cell module according to claim 1, further comprising a series connection member (202), wherein the series connection member (202) comprises a series connection portion (2021), both ends of the series connection portion (2021) in a length direction thereof are connected with a first connection portion (2022) and a second connection portion (2023), the first connection portion (2022) and the second connection portion (2023) located at the same end are respectively connected to two positive electrode lead-out portions (1013) of one of two adjacent battery cell modules (100), and the first connection portion (2022) and the second connection portion (2023) located at the other end are respectively connected to two negative electrode lead-out portions (1014) of the other of the two adjacent battery cell modules (100).
  6. 6. The battery cell module of claim 5, further comprising a plurality of parallel connection members (201), one of the parallel connection members (201) being connected between one of the positive electrode lead-out (1013) and the second connection portion (2023), the other of the parallel connection members (201) being connected between one of the negative electrode lead-out (1014) and the other of the second connection portion (2023).
  7. 7. A battery module according to claim 5, wherein the second connection parts (2023) are arranged at an angle to the series connection parts (2021), and two second connection parts (2023) are enclosed with the series connection parts (2021) to form mounting grooves for mounting the series connection parts (202) to the partition beams (21) of the battery device (20).
  8. 8. The battery cell module of claim 7, further comprising: -an insulation (300), said insulation (300) being wrapped around said series connection (2021) and/or part of said second connection (2023).
  9. 9. A cell module according to claim 8, wherein the insulator (300) is integrally formed with the series connection (202).
  10. 10. The battery cell module of claim 8, further comprising: and an adhesive member (400), wherein one side surface of the adhesive member (400) is adhered to the insulating member (300), and the adhesive member (400) is used for connecting the insulating member (300) and the partition beam (21).
  11. 11. The battery cell module of claim 8, wherein the insulator (300) has at least one mounting portion (301), the at least one mounting portion (301) being configured to receive a wiring harness within the battery device (20).
  12. 12. The battery cell module according to claim 8, wherein the insulating member (300) is provided with a plurality of reinforcing ribs (302) arranged at intervals, and a plurality of the reinforcing ribs (302) are located in the mounting groove and connected to a side of the insulating member (300) facing away from the second connecting portion (2023).
  13. 13. The cell module of any one of claims 1-12, further comprising: Insulating support (600) and a plurality of conductive component (500), insulating support (600) are located cell subassembly (100) are followed the one end of second direction, conductive component (500) are located insulating support (600), adjacent cell (101) are located positive pole (1011) and negative pole (1012) of same one end are passed through conductive component (500) are electric connection in proper order.
  14. 14. The battery cell module of claim 13, wherein the conductive assembly (500) comprises a first conductive member (501) and a second conductive member (502), and wherein the plurality of first conductive members (501) and the plurality of second conductive members (502) are sequentially and alternately arranged along the first direction.
  15. 15. The cell module according to claim 14, wherein the insulating holder (600) has a plurality of mounting grooves (604) and a plurality of limit portions (601); The first conductive pieces (501) and the second conductive pieces (502) are respectively arranged in the mounting grooves (604), and the limiting parts (601) are used for limiting the first conductive pieces (501) and the second conductive pieces (502) to be separated from the mounting grooves (604).
  16. 16. The battery cell module according to claim 15, wherein the limiting portion (601) extends toward the center of the mounting groove (604) and is located at a side of the first conductive member (501) or the second conductive member (502) away from the mounting groove (604).
  17. 17. The battery cell module according to claim 14, wherein the insulating support (600) has a first foolproof portion (602), and one of the first conductive member (501) or the second conductive member (502) has a second foolproof portion (603), and the first foolproof portion (602) and the second foolproof portion (603) are cooperatively disposed.
  18. 18. The battery cell module of claim 14, further comprising: The sampling circuit board (700) is arranged on the insulating bracket (600), and the sampling circuit board (700) is in conductive connection with the first conductive pieces (501) and the second conductive pieces (502) so as to collect the electrical information of the battery cells (101).
  19. 19. The battery cell module of claim 18, further comprising: The protective cover (800), protective cover (800) are located sampling circuit board (700) are kept away from one side of insulating support (600), sampling circuit board (700) are including drawing forth connector (703), draw forth connector (703) and locate protective cover (800) are kept away from one side of insulating support (600).
  20. 20. The battery cell module as recited in claim 19, wherein the sampling circuit board (700) has a bending portion (702), the bending portion (702) is attached to a side of the protective cover (800) away from the insulating support (600) after being bent along the end of the protective cover (800) in the first direction, and the lead connector (703) is connected to the bending portion (702).

Description

Battery cell module, battery device and electric equipment Technical Field The embodiment of the application relates to the technical field of batteries, in particular to a battery cell module, a battery device and electric equipment. Background The battery is a power source for providing power for tools, and is a storage battery or a rechargeable battery for providing power for electric automobiles, electric trains, electric bicycles and golf carts. The batteries are connected to form the battery core module, and the energy density of the battery pack can be improved due to the arrangement of the battery core module, so that the endurance of electric equipment is improved. In the related art, the battery cell module cannot realize high-current quick charging, so that the charging time of the electric equipment is longer, and the charging efficiency of the electric equipment is lower. Disclosure of Invention The embodiment of the application provides a battery cell module, a battery device and electric equipment, which can solve the problem that the charging time of the electric equipment is long and the charging efficiency of the electric equipment is low because the battery cell module cannot realize high-current quick charging. The embodiment of the application provides the following technical scheme: A first aspect of an embodiment of the present application provides a battery cell module for a battery device, the battery cell module including: The battery cell assembly comprises a plurality of battery cells which are arranged along a first direction, wherein the two opposite ends of each battery cell along a second direction are respectively provided with a positive electrode and a negative electrode, the positive electrodes and the negative electrodes of the adjacent battery cells at the same end are sequentially and electrically connected, and the positive electrode of one of the two battery cells at the end part of the first direction is led out while the negative electrode of the other battery cell is led out; The two adjacent cell assemblies are electrically connected through the positive electrode lead-out and the negative electrode lead-out. In one possible embodiment, two positive electrode leads of one of the two cells located at the end of the first direction are connected in parallel to form a total positive lead and two negative electrode leads of the other are connected in parallel to form a total negative lead, with adjacent two cell assemblies being connected in series by the total positive lead and the total negative lead. In one possible embodiment, the total positive lead is configured as a total positive lead and the total negative lead is configured as a total negative lead, with adjacent total positive leads of adjacent two cell assemblies being electrically connected to the total negative lead to connect adjacent two cell assemblies in series. In one possible implementation, the total positive extraction piece and the total negative extraction piece comprise extraction pieces and parallel connection pieces, one end of the parallel connection piece of the total positive extraction piece is connected with one positive electrode extraction piece, the other end of the parallel connection piece of the total positive extraction piece is connected with the extraction piece of the total positive extraction piece in parallel, one end of the parallel connection piece of the total negative extraction piece is connected with the extraction piece of the total negative extraction piece, the extraction piece of the total negative extraction piece is connected with the extraction piece of the other negative electrode extraction piece in parallel, and the extraction pieces of the adjacent total positive extraction pieces and the extraction pieces of the total negative extraction pieces of the adjacent two cell assemblies are electrically connected so as to enable the adjacent two cell assemblies to be connected in series. In a possible implementation manner, the battery pack further comprises a serial connection piece, the serial connection piece comprises a serial connection part, the two ends of the serial connection part along the length direction of the serial connection part are connected with a first connection part and a second connection part, the first connection part and the second connection part which are positioned at the same end are respectively connected with two positive poles of one of the two adjacent battery cell assemblies to be led out, and the first connection part and the second connection part which are positioned at the other end are respectively connected with two negative poles of the other of the two adjacent battery cell assemblies to be led out. In one possible embodiment, the device further comprises a plurality of parallel connection members, one parallel connection member being connected between one positive electrode lead-out and the second connection portion, an