WO2024036494A1 - 电池组及用电装置 - Google Patents

电池组及用电装置 Download PDF

Info

Publication number
WO2024036494A1
WO2024036494A1 PCT/CN2022/112881 CN2022112881W WO2024036494A1 WO 2024036494 A1 WO2024036494 A1 WO 2024036494A1 CN 2022112881 W CN2022112881 W CN 2022112881W WO 2024036494 A1 WO2024036494 A1 WO 2024036494A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
substrate
battery pack
bracket
battery
Prior art date
Application number
PCT/CN2022/112881
Other languages
English (en)
French (fr)
Inventor
喻律师
李季
吴明杰
夏君
Original Assignee
厦门新能达科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 厦门新能达科技有限公司 filed Critical 厦门新能达科技有限公司
Priority to PCT/CN2022/112881 priority Critical patent/WO2024036494A1/zh
Publication of WO2024036494A1 publication Critical patent/WO2024036494A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of batteries, and in particular to a battery pack and an electrical device.
  • Rechargeable batteries refer to batteries that can be recharged to activate the active material and continue to be used after the battery core is discharged. Rechargeable batteries are widely used in electronic devices such as mobile phones, laptops, etc.
  • Battery packs usually include multiple cells to meet the voltage requirements of electronic devices.
  • how to improve the safety of battery packs has always been a research direction in the industry.
  • This application provides a battery pack and an electrical device, which can improve safety.
  • a battery pack including a casing, a plurality of cells and a first bracket.
  • a plurality of electric cores are provided in the casing and arranged along the first direction.
  • the first bracket is provided in the casing.
  • the first bracket is provided with a first cavity. At least part of each battery core is accommodated in the first cavity. A part of the first bracket is located between adjacent battery cells.
  • Each battery core is connected to the first cavity.
  • the first bracket is fixedly connected.
  • first bracket By arranging a first cavity in the first bracket so that at least part of each battery core is accommodated in the first cavity, the portion of each battery core located in the first cavity can be protected, and at the same time, the position of each battery core can be limited; And by arranging a part of the first bracket between adjacent battery cells, a gap can be formed between the adjacent battery cells to provide expansion space for the battery cells and improve the safety of the battery pack.
  • the first bracket includes a first base plate, a first wall, a second wall, a third wall and a fourth wall.
  • the first wall, the second wall, the third wall and the fourth wall are connected to the first substrate.
  • the first wall is opposite to the third wall, and the second wall is opposite to the fourth wall.
  • the first wall, the second wall, the third wall, the fourth wall and the first substrate form a first cavity.
  • a plurality of battery cores are fixedly connected to the first substrate.
  • the first wall, the second wall, the third wall and the fourth wall are integrally formed and have good structural strength.
  • the cell includes a cell housing, an electrode assembly, and an electrode terminal.
  • the cell housing includes a first part and a second part that are connected.
  • the electrode assembly is located inside the first part.
  • a part of the electrode terminal is located inside the first part and is connected to the electrode assembly, and the other part of the electrode terminal extends out of the cell housing.
  • the first part of the battery shell can protect the electrode assembly, and the electrode terminals are used to connect the electrode assembly with other electrical functional components outside the battery shell.
  • the second part can define the extension direction of the electrode terminal and reduce the bending of the electrode terminal at the position where it is connected to the electrode assembly.
  • the second part includes a first sealing part, a second sealing part and a third sealing part, the second sealing part and the third sealing part are respectively located on both sides of the first part in the second direction, and the first part is in the second direction.
  • the three directions have a first side, the first sealing part is located on the first side, the first sealing part is connected to the second sealing part and the third sealing part respectively, and the other part of the electrode terminal extends from the first sealing part, and the first sealing part is located on the first side.
  • the second direction and the third direction are perpendicular to each other.
  • the first sealing part, the second sealing part and the third sealing part cooperate to seal the first part, so that a sealed space is formed inside the first part for accommodating the electrode assembly, thereby effectively sealing and protecting the electrode assembly.
  • the first side of the first portion is at least partially disposed in the first cavity and connected to the first substrate.
  • the first side of the first portion has a surface, the surface is disposed toward the first substrate, and the surface and the first substrate are connected by an adhesive substance.
  • the first substrate can define the shape of the first side of the first part, thereby reducing the deformation of the first side of the first part due to force.
  • the first substrate is provided with a plurality of first through holes, the plurality of first through holes are spaced apart along the first direction, and the first through holes extend along the second direction and penetrate the first substrate along the third direction. , at least part of the first sealing part passes through the first through hole through the first substrate, and each electrode terminal extends from one side of the first substrate through the first through hole to the other side of the first substrate.
  • a boss is provided on the other side of the first substrate at a position corresponding to each first through hole, and a second through hole is provided on the boss.
  • the second through hole penetrates the boss along the third direction and is connected with the boss.
  • the first through hole is connected, along the third direction, the projection of the second through hole covers or is equal to the projection of the first through hole, at least part of the first sealing part is located in the first through hole and the second through hole, and the electrode terminal is formed by One side of the first substrate penetrates the first through hole and the second through hole, and extends to the other side of the first substrate.
  • the first through hole provides an installation space for the first sealing part, so that the first sealing part can extend along the third direction, so that the first sealing part guides the extension direction of the electrode terminal in the third direction. . Moreover, the first through hole can limit the first sealing portion along the first direction and the second direction.
  • connection between the first sealing part and the second sealing part forms a first angled part
  • connection between the first sealing part and the third sealing part forms a second angled part
  • a plurality of first recesses are provided on the side of the first wall opposite to the third wall, and the plurality of first recesses are spaced apart along the first direction.
  • the side of the third wall opposite to the first wall is provided with a plurality of first recesses.
  • a plurality of second recesses are arranged at intervals along the first direction.
  • a plurality of first recesses and a plurality of second recesses are arranged correspondingly in the second direction.
  • the first portion is at least partially provided in the opposite first recess and the second recess. between the recesses.
  • the first recess and the second recess are inserted into the portion of the power supply core in the second direction.
  • the opposite first recess and the second recess can cooperate with each other in the second direction to protect the battery core and limit the position of the battery core.
  • the first substrate is provided with a plurality of first openings. Each first opening penetrates the first substrate along a third direction and is connected to the first recess and the second recess.
  • the first corner portion is located between the first recess and the first recess.
  • the first opening communicates with the second corner portion and is located in the first opening communicating with the second recessed portion.
  • the first opening provides an installation space for the first corner portion and the second corner portion, thereby reducing bending damage of the first corner portion and the second corner portion after the battery core is assembled with the first bracket.
  • the battery pack further includes a second bracket, which is also provided inside the housing.
  • the second bracket is provided with a second cavity, and each battery core is at least partially accommodated in the second cavity. In the first direction, a part of the second bracket is located between adjacent battery cores, and at least part of each battery core is located between the first bracket and the second bracket.
  • the second bracket includes a second base plate, a fifth wall, a sixth wall, a seventh wall and an eighth wall, the fifth wall, the sixth wall, the seventh wall and the eighth wall are connected to the second base plate , the fifth wall is opposite to the seventh wall, the sixth wall is opposite to the eighth wall, the fifth wall, the sixth wall, the seventh wall, the eighth wall and the second substrate are enclosed to form a second cavity, and the second cavity of the first part is The two sides are at least partially disposed in the second cavity and connected to the second substrate, and the plurality of battery cores are fixedly connected to the second substrate.
  • the fifth wall, the sixth wall, the seventh wall, the eighth wall and the second base plate are integrally formed and have good structural strength.
  • the second substrate can define the shape of the second side of the first part in the third direction, thereby reducing the deformation of the second side of the first part.
  • a plurality of third recesses are provided on the side of the fifth wall opposite to the seventh wall, the plurality of third recesses are spaced apart along the first direction, and the side of the seventh wall opposite to the fifth wall is provided with A plurality of fourth recesses are arranged at intervals along the first direction.
  • a plurality of third recesses and a plurality of fourth recesses are arranged correspondingly in the second direction. The first portion is at least partially provided on the opposite third recess and the fourth recess. between the recesses.
  • the third recess and the fourth recess are placed in part of the power supply core in the second direction, and the opposite third recess and the fourth recess can cooperate with each other in the second direction to protect the battery core and limit the position of the battery core.
  • the first part has a second side in the third direction, the second side is opposite to the first side, a part of the second sealing part protrudes from the second side and forms a first convex part, and the third sealing part A portion protrudes from the second side and forms a second convex portion.
  • the second substrate is provided with a plurality of second openings. Each second opening penetrates the second substrate along the third direction and communicates with the corresponding third recess and the fourth recess.
  • the first protrusion is at least partially located The second opening communicates with the third recessed portion, and the second protruding portion is at least partially located at the second opening communicating with the fourth recessed portion.
  • the second opening provides an installation space for the first protrusion and the second protrusion, thereby reducing the bending and damage of the first protrusion and the second protrusion after the battery core is assembled with the second bracket, and improving the distance between the second sealing portion and the first protrusion.
  • the second substrate is provided with a protruding portion, the protruding portion extends toward the battery core along the third direction, and the protruding portion extends between the fifth wall and the seventh wall along the first direction, The second side of the first part is connected to the boss.
  • the installation space of the first protrusion and the second protrusion is increased in the third direction, so as to improve the processing of the first protrusion and the second protrusion. Protection to reduce bending damage of the first convex part and the second convex part.
  • the protruding portion can support the second side of the first part in the third direction, and cooperates with the first substrate to support and limit the battery core in the third direction.
  • the battery pack further includes a circuit board.
  • the circuit board is disposed in the casing and located on a side of the first bracket away from the first cavity, and the circuit board is connected to each electrode terminal. Circuit boards can be used to manage and maintain individual cells.
  • a support part is provided on the inside of the housing, and the circuit board is provided on the support part.
  • embodiments of the present application provide an electrical device, which includes an electrical main body and a battery pack as described in the first aspect.
  • the battery pack supplies power to the electrical main body.
  • Figure 1 is a schematic structural diagram of a battery pack provided by some embodiments of the present application.
  • FIG. 2 is a schematic structural diagram of a battery pack provided by some embodiments of the present application.
  • Figure 3 is an exploded view of a battery pack provided by some embodiments of the present application.
  • Figure 4 is a schematic structural diagram of one side of the first bracket of the battery pack provided by some embodiments of the present application.
  • Figure 5 is a schematic structural diagram of a cell of a battery pack provided by some embodiments of the present application.
  • Figure 6 is a front view of a cell of a battery pack provided by some embodiments of the present application.
  • Figure 7 is an exploded view of the cells of the battery pack provided by some embodiments of the present application.
  • Figure 8 is a schematic structural diagram of the other side of the first bracket of the battery pack provided by some embodiments of the present application.
  • Figure 9 is a partial structural top view of the battery pack provided by some embodiments of the present application.
  • Figure 10 is a cross-sectional view along line A-A in Figure 9;
  • Figure 11 is an enlarged view of C in Figure 10;
  • Figure 12 is an enlarged view of D in Figure 10;
  • Figure 13 is a cross-sectional view along line B-B in Figure 9;
  • Figure 14 is an enlarged view of E in Figure 13;
  • Figure 15 is a partial structural side view of the battery pack provided by some embodiments of the present application.
  • Figure 16 is a cross-sectional view along line F-F in Figure 15;
  • Figure 17 is an enlarged view of H in Figure 16;
  • Figure 18 is a cross-sectional view along line G-G in Figure 15;
  • Figure 19 is an enlarged view of position I in Figure 18;
  • Figure 20 is a schematic structural diagram of one side of the second bracket of the battery pack provided by some embodiments of the present application.
  • Figure 21 is a schematic structural diagram of the other side of the second bracket of the battery pack provided by some embodiments of the present application.
  • Figure 22 is a bottom view of the partial structure of the battery pack provided by some embodiments of the present application.
  • Figure 23 is an enlarged view of J in Figure 22;
  • Figure 24 is a schematic structural diagram of a battery pack provided by some embodiments of the present application.
  • Battery core 21. Battery core shell; 211. First part; 211a, surface; 2111. First side; 2112. Second side; 212. Second part; 2121. First sealing part; 2122. Second Sealing part; 2123, third sealing part; 2124, first corner part; 2125, second corner part; 2126, first convex part; 2127, second convex part; 213, first packaging part; 2131, first region ; 2132. Second area; 214. Second packaging department; 2141. Third area; 2142. Fourth area; 22. Electrode assembly; 23. Electrode terminal;
  • First bracket 31. First cavity; 32. First substrate; 32a, plane; 321, first through hole; 322, first opening; 323, boss; 3231, second through hole; 33. First wall; 331, first recess; 34, second wall; 35, third wall; 351, second recess; 36, fourth wall;
  • Second bracket 41. Second cavity; 42. Second substrate; 421. Second opening; 422. Protruding portion; 43. Fifth wall; 431. Third recess; 44. Sixth wall; 45 , seventh wall; 451, fourth recess; 46, eighth wall;
  • X first direction
  • Y second direction
  • Z third direction
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a detachable connection, or Integrated connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal connection between two components.
  • connection can be a fixed connection or a detachable connection, or Integrated connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal connection between two components.
  • parallel not only includes absolutely parallel situations, but also includes generally parallel situations that are conventionally recognized in engineering; at the same time, “perpendicular” includes not only absolutely vertical situations, but also includes conventional engineering practices.
  • a roughly vertical situation of cognition For example, if the angle between the two directions is 80° to 90°, the two directions can be considered to be perpendicular; if the angle between the two directions is 0° to 10°, the two directions can be considered to be parallel.
  • an embodiment of the present application provides a battery pack, which includes a casing 1 , a plurality of battery cells 2 and a first bracket 3 .
  • a plurality of battery cores 2 are provided in the housing 1, and the plurality of battery cores 2 are arranged along the first direction X.
  • the first bracket 3 is provided in the housing 1.
  • the first bracket 3 is provided with a first cavity 31. At least part of each battery core 2 is accommodated in the first cavity 31. A part of the first bracket 3 is located in the adjacent battery core. 2, each battery core 2 is fixedly connected to the first bracket 3.
  • each battery core 2 and the first bracket 3 are arranged in the space.
  • the plurality of battery cores 2 are spaced apart along the first direction X.
  • Multiple battery cells 2 can be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the multiple battery cells 2 are both connected in series and in parallel.
  • Each battery core 2 is connected to the first bracket 3, and the first bracket 3 is connected to the casing 1.
  • the casing 1 can protect each battery core 2 and the first bracket 3 to limit liquid or other foreign matter from affecting the charging or discharging of the battery core 2 .
  • each battery core 2 located in the first cavity 31 can be Partially protect the battery cores 2 while limiting the position of each battery core 2; and by positioning a part of the first bracket 3 between adjacent battery cores 2, a gap can be formed between the adjacent battery cores 2 so that the battery cores 2 Provide expansion space and improve the safety of the battery pack.
  • the battery core 2 includes a battery core housing 21 , an electrode assembly 22 and an electrode terminal 23 .
  • the electrode assembly 22 is accommodated in the battery case 21 . And the inside of the battery case 21 is also filled with electrolyte.
  • the electrode assembly 22 includes a positive electrode piece, a negative electrode piece and a separator.
  • the battery core 2 can rely on metal ions to move between the positive electrode piece and the negative electrode piece.
  • One end of the electrode terminal 23 extends out of the cell housing 21 and is used for electrical connection with an external circuit.
  • the other end of the electrode terminal 23 extends into the interior of the cell housing 21 and is used for electrical connection with the electrode assembly 22 .
  • the electrode terminal 23 is used to electrically connect the electrode assembly 22 with an external circuit to realize charging and discharging of the battery core 2 .
  • the battery core 2 may be a lithium ion battery core 2, a sodium lithium ion battery core 2, a sodium ion battery core 2, a magnesium ion battery core 2, or other types of battery core 2, which are not limited in the embodiments of the present application.
  • the battery core 2 is a soft-packed battery core 2.
  • the cell housing 21 is made of aluminum plastic film.
  • the cell housing 21 includes a first part 211 and a second part 212 that are connected.
  • the electrode assembly 22 is provided inside the first part 211 .
  • a part of the electrode terminal 23 is located inside the first part 211 and is connected to the electrode assembly 22 , and the other part of the electrode terminal 23 extends out of the cell housing 21 .
  • the first part 211 of the battery case 21 can protect the electrode assembly 22 , and the electrode terminals 23 are used to connect the electrode assembly 22 with other electrical functional components outside the battery case 21 .
  • the second portion 212 can define the extending direction of the electrode terminal 23 and reduce the bending of the electrode terminal 23 at the position where it contacts the electrode assembly 22.
  • one electrode terminal 23 is used for electrical connection with the positive electrode piece, and the other electrode terminal 23 is used for electrical connection with the negative electrode piece.
  • the second part 212 includes a first sealing part 2121 , a second sealing part 2122 and a third sealing part 2123 .
  • the second sealing part 2122 and the third sealing part 2123 are respectively Located on both sides of the first part 211 in the second direction Y, the first part 211 has a first side 2111 in the third direction Z, and the first sealing part 2121 is located on the first side 2111 of the first part 211 in the third direction Z.
  • the first sealing portion 2121 is connected to the second sealing portion 2122 and the third sealing portion 2123 respectively.
  • the other portion of the electrode terminal 23 protrudes from the first sealing portion 2121.
  • the first direction X, the second direction Y and the third direction Z are perpendicular to each other.
  • the first sealing part 2121 , the second sealing part 2122 and the third sealing part 2123 cooperate to seal the first part 211 , so that a sealed space is formed inside the first part 211 for accommodating the electrode assembly 22 , thereby effectively protecting the electrode assembly 22 . Sealed for protection.
  • the battery case 21 includes a first packaging part 213 and a second packaging part 214 that are connected.
  • the first packaging part 213 and the second packaging part 214 can be folded along the connection position, so that The first packaging part 213 and the second packaging part 214 overlap, thereby covering the electrode assembly 22 .
  • the first packaging part 213 and the second packaging part 214 may be two separate and independent components.
  • the first packaging part 213 includes a first region 2131 and a second region 2132 extending outward from the peripheral side of the first region 2131
  • the second packaging part 214 includes a third region 2141 and a second region 2132 extending outwardly from the peripheral side of the first region 2131
  • a fourth region 2142 extends outward from the peripheral side of the third region 2141 .
  • connection between the first sealing part 2121 and the second sealing part 2122 forms a first angled part 2124
  • connection between the first sealing part 2121 and the third sealing part 2123 forms a second angled part 2125.
  • the first corner portion 2124 and the second corner portion 2125 are bent toward the first portion 211 .
  • the first part 211 has a second side 2112 in the third direction Z, and the first side 2111 and the second side 2112 are arranged oppositely.
  • a portion of the second sealing portion 2122 protrudes from the second side 2112 of the first portion 211 to form a first convex portion 2126;
  • a portion of the third sealing portion 2123 protrudes from the first portion. 211 on the second side 2112 to form a second convex portion 2127 .
  • the first bracket 3 includes a first base plate 32, a first wall 33, a second wall 34, a third wall 35 and a fourth wall 36.
  • the third wall 35 and the fourth wall 36 are connected to the first base plate 32.
  • the first wall 33 and the third wall 35 face each other along the second direction Y, and the second wall 34 and the fourth wall 36 face each other along the first direction X.
  • the first wall 33 , the second wall 34 , the third wall 35 , the fourth wall 36 and the first substrate 32 enclose a first cavity 31 , and each battery core 2 is fixedly connected to the first substrate 32 .
  • the first wall 33, the second wall 34, the third wall 35 and the fourth wall 36 are integrally formed and have good structural strength.
  • the first bracket 3 is made by injection molding.
  • the first bracket 3 is made by cutting and hollowing.
  • the first side 2111 of the first portion 211 has a surface 211 a disposed toward the first substrate 32 .
  • the first part 211 is at least partially disposed in the first cavity 31 , and the surface 211 a is connected to the first substrate 32 .
  • the surface 211a is in contact with the first substrate 32 .
  • the surface 211a is connected to the first substrate 32 through an adhesive substance, such as glue.
  • the first substrate 32 can define the shape of the first side 2111 of the first part 211 to reduce the deformation of the first side 2111 of the first part 211 due to force.
  • the first substrate 32 is provided with a plurality of first through holes 321 , and the plurality of first through holes 321 are spaced apart along the first direction X.
  • the hole 321 extends along the second direction Y and penetrates the first substrate 32 along the third direction Z.
  • At least part of the first sealing part 2121 passes through the first substrate 32 through the first through hole 321.
  • At least part of each electrode terminal 23 It extends from one side of the first substrate 32 through the first through hole 321 to the other side of the first substrate 32 .
  • the width of the first sealing portion 2121 is smaller than the thickness of the first substrate 32 .
  • the first sealing portion 2121 is entirely located in the first through hole 321 .
  • the first through hole 321 provides an installation space for the first sealing portion 2121 so that the first sealing portion 2121 can extend along the third direction Z, so that the first sealing portion 2121 faces the third direction Z.
  • the extending direction of the electrode terminal 23 is guided.
  • the first through hole 321 can limit the first sealing portion 2121 along the first direction X and the second direction Y.
  • the first side of the first substrate 32 forms planes 32a on both sides of each first through hole 321 in the first direction
  • the flat surface 32a is in contact with the surface 211a.
  • the flat surface 32a and the surface 211a are connected through an adhesive substance, such as glue.
  • a plurality of first recesses 331 are provided on the opposite side of the first wall 33 and the third wall 35 .
  • the plurality of first recesses 331 are spaced apart along the first direction X.
  • a plurality of second recesses 351 are provided on the side of the wall 35 opposite to the first wall 33.
  • the plurality of second recesses 351 are spaced apart along the first direction X.
  • the plurality of first recesses 331 and the plurality of second recesses 351 are located in the second The direction Y is provided correspondingly, and the first portion 211 is at least partially provided between the opposite first recess 331 and the second recess 351 .
  • the first recess 331 and the second recess 351 are inserted into the power supply core 2 in the second direction Y.
  • the opposite first recess 331 and the second recess 351 can cooperate with each other in the second direction Y to protect the battery core 2 and protect the battery core 2 .
  • Cell 2 is limited.
  • the shape of the first recess 331 and the second recess 351 can match the shape of the edges of the battery core 2 on both sides of the second direction Y, so that the battery core 2 can be smoothly placed into the opposite first recess. between the recess 331 and the second recess 351 .
  • the maximum distance between the first recess 331 and the opposite second recess 351 is greater than the maximum width of the first portion 211 , which is beneficial to assembling the battery core 2 and the first bracket 3 .
  • the battery core 2 when the battery core 2 is placed between the first recess 331 and the second recess 351, there is a clearance fit between the battery core 2 and the first recess 331 and between the battery core 2 and the second recess 351.
  • the gap between the battery core 2 and the first recessed portion 331 and the gap between the battery core 2 and the second recessed portion 351 can provide expansion space for the battery core 2 and reduce the squeeze of the battery core 2 caused by the first recessed portion 331 and the second recessed portion 351. Pressure wear.
  • the gap between the battery core 2 and the first concave portion 331 is 0.2 mm to 0.3 mm, which is beneficial for the first concave portion 331 to limit the position of the battery core 2 and can serve as an expansion space for the battery core 2 .
  • the gap between the battery core 2 and the second concave portion 351 is 0.2mm to 0.3mm, which is beneficial to limiting the position of the battery core 2 with the second concave portion 351 and can provide an expansion space for the battery core 2.
  • an adhesive substance is used between the battery core 2 and the first recess 331 and between the battery core 2 and the second recess 351.
  • Connections such as glue.
  • the battery core 2 when the battery core 2 is placed between the first recess 331 and the second recess 351 , the battery core 2 is directly connected to the first recess 331 and the battery core 2 is connected to the second recess 351 .
  • the first substrate 32 is provided with a plurality of first openings 322 , and each first opening 322 has a first recess 331 and a second second opening 322 .
  • the recesses 351 are provided correspondingly.
  • Each first opening 322 penetrates the first substrate 32 along the third direction Z and is connected with the first recess 331 and the second recess 351 .
  • the first corner portion 2124 is located at the first opening connected with the first recess 331 322, the second corner portion 2125 is located in the first opening 322 connected with the second recessed portion 351.
  • the maximum length of the first opening 322 is greater than the thickness of the battery core 2, and in the plane defined by the first direction
  • the radius of the sector formed by the first opening 322 is greater than the width of the first corner portion 2124 and the width of the second corner portion 2125 .
  • first corner portion 2124 and the second corner portion 2125 are placed in the corresponding first opening 322, they will not come into contact with the first substrate 32.
  • the first opening 322 provides an installation space for the first corner portion 2124 and the second corner portion 2125, thereby reducing the bending damage of the first corner portion 2124 and the second corner portion 2125 after the battery core 2 and the first bracket 3 are assembled, and improving the efficiency of the first corner portion 2124 and the second corner portion 2125.
  • the second side of the first substrate 32 is provided with a boss 323 at a position corresponding to each first through hole 321 , and the boss 323 is provided with a second through hole 3231 , the second through hole 3231 penetrates the boss 323 along the third direction Z and is connected with the first through hole 321.
  • the projection of the second through hole 3231 covers or is equal to the projection of the first through hole 321.
  • the first The sealing portion 2121 is at least partially located in the first through hole 321 and the second through hole 3231 to improve the positioning of the first sealing portion 2121.
  • the electrode terminal 23 penetrates the first through hole 321 and the second through hole 3231 from one side of the first substrate 32 and extends to the other side of the first substrate 32 .
  • the installation space of the first sealing part 2121 is increased in the third direction Z, and the boss 323 is connected with the first through hole 3231.
  • the base plate 32 cooperates with the first direction X and the second direction Y to limit the position of the first sealing part 2121, thereby reducing bending damage of the first sealing part 2121.
  • the sum of the thickness of the boss 323 and the thickness of the first substrate 32 is greater than or equal to the width of the first sealing part 2121, so that the first sealing part 2121 is completely located between the first through hole 321 and the first through hole 321. In the second through hole 3231, the first sealing portion 2121 is protected by lifting.
  • first sealing portion 2121 there is a clearance fit between the first sealing portion 2121 and the first through hole 321 , which is advantageous for the first sealing portion 2121 to pass through the first through hole 321 .
  • first direction X there is a gap of 0.1 mm between the first sealing part 2121 and the hole walls on both sides of the first through hole 321.
  • first sealing part 2121 there is a clearance fit between the first sealing part 2121 and the second through hole 3231, which facilitates the first sealing part 2121 to pass through the second through hole 3231.
  • first direction X there is a gap of 0.1 mm between the first sealing part 2121 and the hole walls on both sides of the second through hole 3231.
  • the battery pack further includes a second bracket 4, and the second bracket 4 is provided inside the housing 1.
  • the second bracket 4 is provided with a second cavity 41.
  • Each battery core 2 is at least partially accommodated in the second cavity 41.
  • a part of the second bracket 4 is located between adjacent battery cores 2.
  • At least part of the battery core 2 is located between the first bracket 3 and the second bracket 4 , and each battery core 2 is fixedly connected to the second bracket 4 .
  • Each battery core 2 is partially placed in the first cavity 31 on the first side in the third direction Z.
  • the first bracket 3 protects the first side of the battery core 2 in the third direction Z.
  • Each battery core 2 is partially placed in the first cavity 31 in the third direction Z.
  • the second side of Z is partially placed in the second cavity 41, the second bracket 4 protects the second side of the battery core 2 in the third direction Z, and the first bracket 3 and the second bracket 4 cooperate to protect each battery core. 2 to limit the position; a gap is formed between adjacent battery cores 2 by part of the first bracket 3 and part of the second bracket 4 to provide expansion space for the battery core 2.
  • the second bracket 4 includes a second base plate 42, a fifth wall 43, a sixth wall 44, a seventh wall 45, and an eighth wall 46.
  • the seventh wall 45 and the eighth wall 46 are connected to the second base plate 42, the fifth wall 43 and the seventh wall 45 are opposite along the second direction Y, and the sixth wall 44 and the eighth wall 46 are opposite along the first direction X,
  • the fifth wall 43 , the sixth wall 44 , the seventh wall 45 , the eighth wall 46 and the second substrate 42 enclose the second cavity 41 , and the second side 2112 of the first part 211 in the third direction Z is at least partially disposed on
  • the second cavity 41 is also connected to the second substrate 42 , and the plurality of battery cores 2 are fixedly connected to the second substrate 42 .
  • the second side 2112 of the first part 211 in the third direction Z is at least partially disposed in the second cavity 41 and is in contact with the second substrate 42 .
  • the second side 2112 of the first part 211 in the third direction Z is at least partially disposed in the second cavity 41 and connected to the second substrate 42 through an adhesive substance, such as glue.
  • the fifth wall 43, the sixth wall 44, the seventh wall 45, the eighth wall 46 and the second base plate 42 are integrally formed and have good structural strength.
  • the second substrate 42 can define the shape of the second side 2112 of the first part 211 in the third direction Z, thereby reducing the deformation of the second side 2112 of the first part 211.
  • the second bracket 4 is made by injection molding.
  • the second bracket 4 is made by cutting and hollowing.
  • a plurality of third recesses 431 are provided on the opposite side of the fifth wall 43 and the seventh wall 45 , and the plurality of third recesses 431 are spaced apart along the first direction X.
  • a plurality of fourth recesses 451 are provided on the opposite side of the wall 45 and the fifth wall 43. The plurality of fourth recesses 451 are spaced apart along the first direction The direction Y is provided correspondingly, and the first portion 211 is at least partially provided between the opposing third recess 431 and the fourth recess 451 .
  • the third recess 431 and the fourth recess 451 are inserted into the power supply core 2 in the second direction Y.
  • the opposite third recess 431 and the fourth recess 451 can cooperate with each other in the second direction Y to protect the battery core 2 and protect the battery core 2 .
  • Cell 2 is limited.
  • the shapes of the third recess 431 and the fourth recess 451 can match the shapes of the edges of the battery core 2 on both sides of the second direction Y, so that the battery core 2 can be smoothly placed into the opposite third recess. between the concave portion 431 and the fourth concave portion 451 .
  • the maximum distance between the third recess 431 and the opposite fourth recess 451 is greater than the maximum width of the first part 211 in the second direction Y, which is beneficial to connecting the battery core 2 and the second bracket 4 assembly.
  • the gap between the battery core 2 and the third recessed portion 431 and the gap between the battery core 2 and the fourth recessed portion 451 can provide expansion space for the battery core 2 and reduce the damage caused by the third recessed portion 431 and the fourth recessed portion 451 to the battery core 2 Extrusion wear.
  • the gap between the battery core 2 and the third recessed portion 431 is 0.2 mm to 0.3 mm, which is helpful for the third recessed portion 431 to limit the battery core 2 and can be an expansion space for the battery core 2 .
  • the gap between the battery core 2 and the fourth concave portion 451 is 0.2 mm to 0.3 mm, which is beneficial for the fourth concave portion 451 to limit the position of the battery core 2 and can provide an expansion space for the battery core 2 .
  • an adhesive substance is used between the battery core 2 and the third recess 431 and between the battery core 2 and the fourth recess 451. Connections, such as glue.
  • the battery core 2 is placed between the third recess 431 and the fourth recess 451 , the battery core 2 is directly connected to the third recess 431 and the battery core 2 is directly connected to the fourth recess 451 .
  • the second substrate 42 is provided with a plurality of second openings 421 , and each second opening 421 has a third recess 431 and a fourth The recesses 451 are provided correspondingly.
  • Each second opening 421 penetrates the second substrate 42 along the third direction Z and communicates with the corresponding third recess 431 and the fourth recess 451 .
  • the first protrusion 2126 is located at the third recess 431 connected to the third recess 431
  • Two openings 421 the second protruding portion 2127 is located in the second opening 421 communicating with the fourth recessed portion 451 .
  • the length of the second opening 421 is greater than the length of the first protrusion 2126 along the first direction Along the second direction Y, the length of the second opening 421 is greater than the length of the first protrusion 2126 , thereby reducing the risk of contact connection between the first protrusion 2126 and the second substrate 42 .
  • the length of the second opening 421 is greater than the length of the second protrusion 2127 along the first direction Along the second direction Y, the length of the second opening 421 is greater than the length of the second protrusion 2127 , thereby reducing the risk of contact connection between the second protrusion 2127 and the second substrate 42 .
  • the second opening 421 provides space for the first protrusion 2126 and the second protrusion 2127 to reduce bending damage of the first protrusion 2126 and the second protrusion 2127 after the battery core 2 and the second bracket 4 are assembled, thereby improving The sealing effect between the end of the second sealing portion 2122 away from the first sealing portion 2121 and the first portion 211 and between the end of the third sealing portion 2123 away from the first sealing portion 2121 and the first portion 211 .
  • the second substrate 42 is provided with a protruding portion 422 .
  • the protruding portion 422 extends toward the battery core 2 along the third direction Z, and the protruding portion 422 is located at the third direction Z.
  • the fifth wall 43 and the seventh wall 45 extend along the first direction X, and the second side 2112 of the first part 211 is at least partially connected to the protruding part 422 .
  • the second side 2112 of the first portion 211 is at least partially in contact with the protruding portion 422 .
  • the second side 2112 of the first part 211 is at least partially connected to the protruding part 422 through an adhesive substance, such as glue.
  • the cross section of the protruding portion 422 in the plane defined by the second direction Y and the third direction Z is trapezoidal.
  • the thickness of the first protrusion 2126 is less than or equal to the sum of the thickness of the protrusion 422 and the thickness of the second substrate 42, which is beneficial to reducing the extension of the first protrusion 2126 out of the second bracket. 4 risk, improve the protection of battery cell 2.
  • the thickness of the second protrusion 2127 is less than or equal to the sum of the thickness of the protrusion 422 and the thickness of the second substrate 42, which is beneficial to reducing the extension of the second protrusion 2127 out of the second bracket. 4 risk, improve the protection of battery cell 2.
  • the installation space of the first protruding portion 2126 and the second protruding portion 2127 is increased in the third direction Z, so as to improve the access to the first protruding portion.
  • 2126 and the second convex part 2127 are protected to reduce bending damage of the first convex part 2126 and the second convex part 2127.
  • the protruding portion 422 can support the second side 2112 of the first part 211 in the third direction Z, and cooperate with the first substrate 32 to support and limit the battery core 2 in the third direction Z.
  • each battery core 2 and the first bracket 3 are fixed by gluing.
  • Glue is applied to at least part of the plane 32a of the first substrate 32.
  • the surface 211a of the first part 211 of each battery core 2 is in contact with the plane where the glue is applied.
  • 32a is glued and fixed; each battery core 2 and the second bracket 4 are glued and fixed, and structural glue is applied to the raised portion 422.
  • the first part 211 of each battery core 2 is glued to the second side 2112 in the third direction Z and the protruding portion 422 . In order to fix the relative position of the battery core 2 and the first bracket 3 and the second bracket 4, and improve the connection strength between the battery core 2 and the first bracket 3 and/or the second bracket 4.
  • first bracket 3 and the housing 1 are fixed by glue, and/or the second bracket 4 and the housing 1 are fixed by glue.
  • the relative positions of the first bracket 3 , the second bracket 4 and the shell 1 are fixed, and the connection strength between the first bracket 3 and/or the second bracket 4 and the shell 1 is improved.
  • first bracket 3 and the second bracket 4 are glued to the housing 1
  • glue is applied to the inner surface of the housing 1 at positions corresponding to both sides of the first bracket 3 in the second direction Y.
  • structural glue on the inner surface of the housing 1 at positions corresponding to both sides of the second bracket 4 in the second direction Y
  • the coating height of the glue in the third direction Z is greater than that of the first bracket 3 and the second bracket 4 The thickness of the bracket 4 in the third direction Z.
  • the housing 1 includes a first housing 11 and a second housing 12 that enclose a space.
  • the first housing 11 and the second housing 12 may be integrated through bonding, fastener connection, or other methods to cover each other and jointly define a space for accommodating the battery core 2 .
  • first housing 11 and the second housing 12 are snap-fitted.
  • first housing 11 and the second housing 12 can also be fixed by structural adhesive.
  • the battery pack also includes a circuit board 5.
  • the circuit board 5 may include a BMS component (Battery Management System).
  • the BMS component includes multiple electronic components.
  • the multiple electronic components can realize data collection of the battery cell 2. , control, protection, communication, power calculation, signal transmission, power transmission and other functions.
  • the circuit board 5 can be used to manage and maintain each battery cell 2 .
  • the circuit board 5 is installed in the housing 1 and is located on the side of the first bracket 3 away from the first cavity 31 , that is, the circuit board 5 is located on the side of the first bracket 3 that is not provided with the first cavity 31 , and the circuit board 5 and Each electrode terminal 23 is connected to control charging and discharging of the battery core 2 .
  • a support portion 13 is provided on the inside of the housing 1 , and the circuit board 5 is connected to the support portion 13 .
  • the circuit board 5 In order to realize the installation of the circuit board 5 and fix the position of the circuit board 5, reduce the relative displacement of the circuit board 5 with respect to the housing 1 and each battery core 2, and improve the effectiveness of the connection between the circuit board 5 and each battery core 2 sex.
  • the two supporting parts 13 are respectively provided on two opposite inner surfaces of the housing in the first direction X or the second direction Y.
  • the circuit board 5 is located in the first direction X or the second direction Y. Both sides in the direction Y are respectively connected to the two supporting parts 13 .
  • circuit board 5 and the support part 13 are fixed with adhesive to reduce the relative shaking between the circuit board 5 and the support part 13 which affects the electrical connection effect between each electrode terminal 23 and the circuit board 5 .
  • the battery pack provided by the embodiment of the present application is conducive to reducing the need for foam between adjacent battery cells 2, the top of the battery core 2, and the bottom of the battery core 2, improving assembly efficiency and reducing costs; at the same time, it can reduce or save Eliminate the glue filling step, reducing or eliminating the cost of filling tape.
  • embodiments of the present application provide an electric device, which includes a main body and a battery pack as described in the first aspect.
  • the battery pack is connected to the main body, and the battery pack supplies power to the main body.
  • the battery pack may be the battery pack provided in any of the above embodiments.
  • the main body of electricity can realize the set functions driven by electric energy.
  • Electrical devices can be portable devices, laptops, electric toys and tools, energy storage systems, and more.
  • Power tools include metal cutting power tools, cleaning tools, etc., such as electric drills, electric wrenches, vacuum cleaners, sweeping robots, etc.
  • the embodiments of this application impose no special restrictions on the above-mentioned electrical devices.

Abstract

本申请实施例提供一种电池组及用电装置。电池组包括外壳、多个电芯及第一支架，多个电芯设于外壳内并沿第一方向布置；第一支架设于外壳内，第一支架设有第一腔体，各电芯的至少部分容纳于第一腔体中，第一支架的一部分位于相邻的电芯之间，各电芯与第一支架固定连接。本申请通过在第一支架设置第一腔体，使各电芯的至少部分容纳于第一腔体中，能对各电芯位于第一腔体的部分进行保护，同时对各电芯进行限位保持；并且通过使第一支架的一部分位于相邻的电芯之间，可以于相邻的电芯之间形成间隙，以为电芯提供膨胀空间，提高电池组的安全性。

Description

电池组及用电装置 技术领域
本申请涉及电池领域，特别是涉及一种电池组及用电装置。
背景技术
可再充电电芯，是指在电芯放电后可通过充电的方式使活性物质激活而继续使用的电池。可再充电电芯广泛用于电子设备，例如手机、笔记本电脑等等。
电池组通常包括多个电芯，以满足电子设备对电压的要求。在电池技术的发展中，如何改进电池组的安全性，一直是业内的研究方向。
发明内容
本申请提供了一种电池组和用电装置，其能提高安全性。
第一方面，本申请实施例提供了一种电池组，包括外壳、多个电芯及第一支架。多个电芯设于外壳内并沿第一方向布置。第一支架设于外壳内，第一支架设有第一腔体，各电芯的至少部分容纳于第一腔体中，第一支架的一部分位于相邻的电芯之间，各电芯与第一支架固定连接。
通过在第一支架设置第一腔体，使各电芯的至少部分容纳于第一腔体中，能对各电芯位于第一腔体的部分进行保护，同时对各电芯进行限位；并且通过使第一支架的一部分位于相邻的电芯之间，可以于相邻的电芯之间形成间隙，以为电芯提供膨胀空间，提高电池组的安全性。
在一些实施方式中，第一支架包括第一基板、第一壁、第二壁、第三壁及第四壁。第一壁、第二壁、第三壁及第四壁连接于第一基板。第一壁与第三壁相对，第二壁与第四壁相对。第一壁、第二壁、第三壁、第四壁及第一基板围合形成第一腔体。多个电芯与第一基板固定连接。
第一壁、第二壁、第三壁、第四壁为一体成型，具有较好的结构强度。
在一些实施方式中，电芯包括电芯壳体、电极组件及电极端子。电芯壳体包括相接的第一部分和第二部分。电极组件设于第一部分的内部。电极端子的一部分位于第一部分的内部，并连接至电极组件，电极端子的另一部分伸出电芯壳体。
电芯壳体的第一部分能对电极组件进行保护，电极端子用于实现电极组件与电芯壳体外部的其他用电功能部件相接。第二部分能限定电极端子的延伸方向，减少电极端子在与电极组件相接的位置处发生弯折的情况。
在一些实施方式中，第二部分包括第一密封部、第二密封部和第三密封部，第二密封部与第三密封部分别位于第一部分于第二方向的两侧，第一部分于第三方向具有第一侧，第一密封部位于第一侧，第一密封部分别与第二密封部、第三密封部相接，电极端子的另一部分由第一密封部伸出，第一方向、第二方向及第三方向相互垂直。
第一密封部、第二密封部与第三密封部配合对第一部分进行密封，以使第一部分的内部形成密闭的空间用于容置电极组件，有效对电极组件进行密封保护。
在一些实施方式中，第一部分的第一侧至少部分设于第一腔体并与第一基板连接。
在一些实施方式中，第一部分的第一侧具有表面，表面朝向第一基板设置，表面和第一基板通过粘接物质连接。
第一基板可限定第一部分的第一侧的形状，减少第一部分的第一侧受力而形变的情况。
在一些实施方式中，第一基板设有多个第一通孔，多个第一通孔沿第一方向间隔布设，第一通孔沿第二方向延伸设置并沿第三方向贯穿第一基板，第一密封部的至少部分由第一通孔穿过第一基板，各电极端子由第一基板的一侧穿过第一通孔延伸至第一基板的另一侧。
在一些实施方式中，第一基板的另一侧与各第一通孔对应的位置处设有凸台，凸台设有第二通孔，第二通孔沿第三方向贯穿凸台并与第一通孔连通，沿第三方向，第二通孔的投影覆盖或等于第一通孔的投影，第一密封部的至少部分位于第一通孔与第二通孔中，且电极端子由第一基板的一 侧贯穿第一通孔与第二通孔，并伸至第一基板的另一侧。
沿第三方向，第一通孔为第一密封部提供了设置空间，以使第一密封部可以沿第三方向延伸，从而使第一密封部于第三方向对电极端子的延伸方向进行引导。并且，第一通孔可沿第一方向及第二方向对第一密封部进行限位。
在一些实施方式中，第一密封部与第二密封部的连接处形成第一折角部，第一密封部与第三密封部的连接处形成第二折角部。
在一些实施方式中，第一壁与第三壁相对的一侧设有多个第一凹部，多个第一凹部沿第一方向间隔布设，第三壁与第一壁相对的一侧设有多个第二凹部，多个第二凹部沿第一方向间隔布设，多个第一凹部与多个第二凹部于第二方向对应设置，第一部分至少部分设于相对的第一凹部与第二凹部之间。
第一凹部与第二凹部于第二方向供电芯的部分置入，相对的第一凹部与第二凹部能相互配合于第二方向对电芯进行保护，并对电芯进行限位。
在一些实施方式中，第一基板设有多个第一开口，各第一开口沿第三方向贯穿第一基板，并与第一凹部和第二凹部连通，第一折角部位于与第一凹部连通的第一开口，第二折角部位于与第二凹部连通的第一开口。
通过第一开口为第一折角部及第二折角部提供设置空间，减少电芯与第一支架装配后第一折角部与第二折角部弯折损坏的情况。
在一些实施方式中，电池组还包括第二支架，第二支架也设于外壳的内部，第二支架设有第二腔体，各电芯至少部分容纳于第二腔体中，在第一方向，第二支架的一部分位于相邻的电芯之间，各电芯的至少部分位于第一支架及第二支架之间。
在一些实施方式中，第二支架包括第二基板、第五壁、第六壁、第七壁和第八壁，第五壁、第六壁、第七壁和第八壁连接于第二基板，第五壁与第七壁相对，第六壁与第八壁相对，第五壁、第六壁、第七壁、第八壁及第二基板围合形成第二腔体，第一部分的第二侧至少部分设于第二腔体并与第二基板连接，多个电芯与第二基板固定连接。
第五壁、第六壁、第七壁、第八壁及第二基板一体成型，具有较好的 结构强度。第二基板能限定第一部分于第三方向的第二侧的形状，减少第一部分的第二侧变形的情况。
在一些实施方式中，第五壁与第七壁相对的一侧设有多个第三凹部，多个第三凹部沿第一方向间隔布设，第七壁与第五壁相对的一侧设有多个第四凹部，多个第四凹部沿第一方向间隔布设，多个第三凹部与多个第四凹部于第二方向对应设置，第一部分至少部分设于相对的第三凹部与第四凹部之间。
第三凹部与第四凹部于第二方向供电芯的部分置入，相对的第三凹部与第四凹部能相互配合于第二方向对电芯进行保护，并对电芯进行限位。
在一些实施方式中，第一部分于第三方向具有第二侧，第二侧与第一侧相对，第二密封部的一部分凸出于第二侧并形成第一凸部，第三密封部的一部分凸出于第二侧并形成第二凸部。
在一些实施方式中，第二基板设有多个第二开口，各第二开口沿第三方向贯穿第二基板，并与对应的第三凹部和第四凹部连通，第一凸部至少部分位于与第三凹部连通的第二开口，第二凸部至少部分位于第四凹部连通的第二开口。
通过第二开口为第一凸部及第二凸部提供设置空间，减少电芯与第二支架装配后第一凸部与第二凸部弯折损坏的情况，提高第二密封部远离第一密封部的端部处与第一部分之间以及第三密封部远离第一密封部的端部处与第一部分之间的密封效果。
在一些实施方式中，第二基板设有凸起部，沿第三方向，凸起部朝向电芯延伸设置，且凸起部于第五壁及第七壁之间沿第一方向延伸设置，第一部分的第二侧与凸起部连接。
在第二基板的第二开口的基础上，通过设置凸起部，于第三方向增加了第一凸部与第二凸部的设置空间，以提升对第一凸部及第二凸部进行保护，减少第一凸部与第二凸部弯折损坏的情况。凸起部能对第一部分于第三方向的第二侧进行支撑，以与第一基板配合于第三方向对电芯进行支撑及限位。
在一些实施方式中，电池组还包括电路板，电路板设于外壳内并位于 第一支架远离第一腔体的一侧，且电路板与各电极端子相接。电路板可用于管理并维护各电芯。
在一些实施方式中，外壳的内侧设有支撑部，电路板设于支撑部。以实现电路板的安装并对电路板的位置进行固定，减少电路板相对于外壳及各电芯发生相对位移的情况，提高电路板与各电芯之间连接的有效性。
第二方面，本申请实施例提供了一种用电装置，包括用电主体以及如第一方面所述的电池组，电池组为用电主体供电。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例。
图1为本申请一些实施例提供的电池组的结构示意图；
图2为本申请一些实施例提供的电池组的结构示意图；
图3为本申请一些实施例提供的电池组的爆炸图；
图4为本申请一些实施例提供的电池组的第一支架的一侧结构示意图；
图5为本申请一些实施例提供的电池组的电芯的结构示意图；
图6为本申请一些实施例提供的电池组的电芯的主视图；
图7为本申请一些实施例提供的电池组的电芯的爆炸图；
图8为本申请一些实施例提供的电池组的第一支架的另一侧结构示意图；
图9为本申请一些实施例提供的电池组的局部结构俯视图；
图10为沿图9中A-A线的剖视图；
图11为图10中C处放大图；
图12为图10中D处放大图；
图13为沿图9中B-B线的剖视图；
图14为图13中E处放大图；
图15为本申请一些实施例提供的电池组的局部结构侧视图；
图16为沿图15中F-F线的剖视图；
图17为图16中H处放大图；
图18为沿图15中G-G线的剖视图；
图19为图18中I处放大图；
图20为本申请一些实施例提供的电池组的第二支架的一侧结构示意图；
图21为本申请一些实施例提供的电池组的第二支架的另一侧结构示意图；
图22为本申请一些实施例提供的电池组的局部结构仰视图；
图23为图22中J处放大图；
图24为本申请一些实施例提供的电池组的结构示意图。
具体实施方式中的附图标记如下：
1、外壳；11、第一壳体；12、第二壳体；13、支撑部；
2、电芯；21、电芯壳体；211、第一部分；211a、表面；2111、第一侧；2112、第二侧；212、第二部分；2121、第一密封部；2122、第二密封部；2123、第三密封部；2124、第一折角部；2125、第二折角部；2126、第一凸部；2127、第二凸部；213、第一包装部；2131、第一区域；2132、第二区域；214、第二包装部；2141、第三区域；2142、第四区域；22、电极组件；23、电极端子；
3、第一支架；31、第一腔体；32、第一基板；32a、平面；321、第一通孔；322、第一开口；323、凸台；3231、第二通孔；33、第一壁；331、第一凹部；34、第二壁；35、第三壁；351、第二凹部；36、第四壁；
4、第二支架；41、第二腔体；42、第二基板；421、第二开口；422、凸起部；43、第五壁；431、第三凹部；44、第六壁；45、第七壁；451、第四凹部；46、第八壁；
5、电路板；
X、第一方向；Y、第二方向；Z、第三方向。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显 然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“连接”等应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请的实施例中，“平行”不仅包括绝对平行的情况，也包括了工程上常规认知的大致平行的情况；同时，“垂直”也不仅包括绝对垂直的情况，还包括工程上常规认知的大致垂直的情况。示例性地，两个方向的夹角为80°至90°，可认为两个方向垂直；两个方向的夹角为0°至10°，可认为两个方向平行。
下面结合附图描述本申请的电池组及用电装置。
如图1至图4所示，本申请实施例提供了一种电池组，包括外壳1、多个电芯2及第一支架3。多个电芯2设于外壳1内，多个电芯2沿第一方向X布置。第一支架3设于外壳1内，第一支架3设有第一腔体31，各电芯2的至少部分容纳于第一腔体31中，第一支架3的一部分位于相邻的电芯2之间，各电芯2与第一支架3固定连接。
外壳1的内部具有空间，各电芯2及第一支架3均设于空间中，多个 电芯2沿第一方向X间隔布置。
多个电芯2之间可串联或并联或混联，混联是指多个电芯2中既有串联又有并联。
各电芯2与第一支架3相接，第一支架3与外壳1相接。外壳1能对各电芯2及第一支架3进行保护，以限制液体或其它异物影响电芯2的充电或放电。
在本申请实施例中，通过在第一支架3设置第一腔体31，使各电芯2的至少部分容纳于第一腔体31中，能对各电芯2位于第一腔体31的部分进行保护，同时对各电芯2进行限位；并且通过使第一支架3的一部分位于相邻的电芯2之间，可以于相邻的电芯2之间形成间隙，以为电芯2提供膨胀空间，提高电池组的安全性。
如图5至图7所示，在一些实施方式中，电芯2包括电芯壳体21、电极组件22及电极端子23。电极组件22容纳于电芯壳体21内。且电芯壳体21的内部还填充有电解液。电极组件22包括正极极片、负极极片和隔离膜，电芯2可以依靠金属离子在正极极片和负极极片之间移动工作。电极端子23的一端伸出到电芯壳体21的外部并用于与外部电路电连接，电极端子23的另一端伸入到电芯壳体21的内部并用于与电极组件22电连接。电极端子23用于将电极组件22与外部电路电连接，以实现电芯2充电和放电。
电芯2可以是锂离子电芯2、钠锂离子电芯2、钠离子电芯2、镁离子电芯2或其它类型的电芯2，本申请实施例对此并不限定。可选的，电芯2为软包电芯2。
示例性地，电芯壳体21由铝塑膜制成。
电芯壳体21包括相接的第一部分211和第二部分212。电极组件22设于第一部分211的内部。电极端子23的一部分位于第一部分211的内部，并连接至电极组件22，电极端子23的另一部分伸出电芯壳体21。
电芯壳体21的第一部分211能对电极组件22进行保护，电极端子23用于实现电极组件22与电芯壳体21外部的其他用电功能部件相接。第二部分212能限定电极端子23的延伸方向，减少电极端子23在与电极组件 22相接的位置处发生弯折的情况。
示例性地，电极端子23设有两个，其中一个电极端子23用于与正极极片电连接，另一个电极端子23用于与负极极片电连接。
如图5及图6所示，在一些实施方式中，第二部分212包括第一密封部2121、第二密封部2122和第三密封部2123，第二密封部2122与第三密封部2123分别位于第一部分211于第二方向Y的两侧，第一部分211于第三方向Z具有第一侧2111，第一密封部2121位于第一部分211于第三方向Z的第一侧2111，第一密封部2121分别与第二密封部2122、第三密封部2123相接，电极端子23的另一部分由第一密封部2121伸出，第一方向X、第二方向Y及第三方向Z相互垂直。
第一密封部2121、第二密封部2122与第三密封部2123配合对第一部分211进行密封，以使第一部分211的内部形成密闭的空间用于容置电极组件22，有效对电极组件22进行密封保护。
示例性地，如图7所示，电芯壳体21包括相接的第一包装部213和第二包装部214，第一包装部213和第二包装部214沿连接位置可以进行折叠，使得第一包装部213和第二包装部214重合，从而包覆电极组件22。其他实施例中，第一包装部213和第二包装部214可为两个相离的独立部件。
示例性地，如图7所示，第一包装部213包括第一区域2131和从第一区域2131的周侧向外延伸的第二区域2132，第二包装部214包括第三区域2141和从第三区域2141的周侧向外延伸的第四区域2142。在第一包装部213和第二包装部214沿连接位置折叠后，第一区域2131和第三区域2141配合形成第一部分211并夹持电极组件22，第二区域2132和第四区域2142重合并密封连接形成第二部分212。电极端子23从第二区域2132和第四区域2142之间伸出，以实现电极组件22与外部电路的电连接。
在一些实施方式中，第一密封部2121与第二密封部2122的连接处形成第一折角部2124，第一密封部2121与第三密封部2123的连接处形成第二折角部2125。第一折角部2124及第二折角部2125朝向第一部分211弯折。在将电芯2与第一支架3装配时，能减少第二密封部2122与第三密封 部2123对第一部分211与第一支架3之间的装配造成阻碍。
在一些实施方式中，第一部分211于第三方向Z具有第二侧2112，第一侧2111与第二侧2112相对设置。沿第三方向Z，第二密封部2122的一部分凸出于第一部分211的第二侧2112以形成第一凸部2126；沿第三方向Z，第三密封部2123的一部分凸出于第一部分211的第二侧2112以形成第二凸部2127。
如图4所示，在一些实施方式中，第一支架3包括第一基板32、第一壁33、第二壁34、第三壁35及第四壁36，第一壁33、第二壁34、第三壁35及第四壁36连接于第一基板32，第一壁33与第三壁35沿第二方向Y相对，第二壁34与第四壁36沿第一方向X相对，第一壁33、第二壁34、第三壁35、第四壁36及第一基板32围合形成第一腔体31，各电芯2与第一基板32固定相接。
第一壁33、第二壁34、第三壁35、第四壁36为一体成型，具有较好的结构强度。
可选地，第一支架3采用注塑加工的方式制成。
可选地，第一支架3通过裁切及挖空的加工方式制成。
在一些实施方式中，第一部分211的第一侧2111具有表面211a，表面211a朝向第一基板32设置。第一部分211至少部分设于第一腔体31，表面211a与第一基板32连接。可选的，表面211a与第一基板32接触连接。可选的，表面211a与第一基板32通过粘接物质连接，比如胶水。
第一基板32可限定第一部分211的第一侧2111的形状，减少第一部分211的第一侧2111受力而形变的情况。
如图4及图8至图9所示，在一些实施方式中，第一基板32设有多个第一通孔321，多个第一通孔321沿第一方向X间隔布设，第一通孔321沿第二方向Y延伸设置，并沿第三方向Z贯穿第一基板32，第一密封部2121的至少部分由第一通孔321穿过第一基板32，各电极端子23的至少部分由第一基板32的一侧穿过第一通孔321延伸至第一基板32的另一侧。
在一些实施例中，沿第三方向Z，第一密封部2121的宽度小于第一基板32的厚度。第一密封部2121全部位于第一通孔321中。沿第三方向Z， 第一通孔321为第一密封部2121提供了设置空间，以使第一密封部2121可以沿第三方向Z延伸，从而使第一密封部2121于第三方向Z对电极端子23的延伸方向进行引导。并且，第一通孔321可沿第一方向X及第二方向Y对第一密封部2121进行限位。
在一些实施方式中，第一基板32第一侧在每个第一通孔321于第一方向X的两侧分别形成平面32a，平面32a与表面211a连接，降低表面211a受力变形的风险。可选的，平面32a与表面211a接触连接。可选的，平面32a与表面211a通过粘接物质连接，比如胶水。
在一些实施方式中，如图4所示，第一壁33与第三壁35相对的一侧设有多个第一凹部331，多个第一凹部331沿第一方向X间隔布设，第三壁35与第一壁33相对的一侧设有多个第二凹部351，多个第二凹部351沿第一方向X间隔布设，多个第一凹部331与多个第二凹部351于第二方向Y对应设置，第一部分211至少部分设于相对的第一凹部331与第二凹部351之间。
第一凹部331与第二凹部351于第二方向Y供电芯2的部分置入，相对的第一凹部331与第二凹部351能相互配合于第二方向Y对电芯2进行保护，并对电芯2进行限位。可选地，第一凹部331的形状及第二凹部351的形状，能够与电芯2于第二方向Y的两侧的边缘的形状相配合，以使电芯2顺利置入相对的第一凹部331与第二凹部351之间。可选地，沿第二方向Y,第一凹部331与相对的第二凹部351之间的最大距离大于第一部分211于最大宽度,有利于将电芯2和第一支架3的组装。
在一些实施例中，电芯2在置于第一凹部331与第二凹部351之间时，电芯2与第一凹部331之间及电芯2与第二凹部351之间为间隙配合，电芯2与第一凹部331之间及电芯2与第二凹部351之间的间隙，能为电芯2提供膨胀空间，减少第一凹部331与第二凹部351对电芯2造成的挤压磨损。
可选地，电芯2与第一凹部331之间间隙为0.2mm至0.3mm，有利于第一凹部331对电芯2限位，可为电芯2的膨胀空间。可选的，电芯2与第二凹部351之间的间隙为0.2mm至0.3mm，有利于与第二凹部351对电 芯2限位，可为电芯2的膨胀空间。
在一些实施例中，电芯2在置于第一凹部331与第二凹部351之间时，电芯2与第一凹部331之间以及电芯2与第二凹部351之间通过粘接物质连接，比如胶水。
在一些实施例中，电芯2在置于第一凹部331与第二凹部351之间时，电芯2与第一凹部331之间以及电芯2与第二凹部351之间直接接触连接。
如图7至图9、图16及图17所示，在一些实施方式中，第一基板32设有多个第一开口322，每个第一开口322与一个第一凹部331以及一个第二凹部351对应设置，各第一开口322沿第三方向Z贯穿第一基板32，并与第一凹部331和第二凹部351连通，第一折角部2124位于与第一凹部331连通的第一开口322，第二折角部2125位于与第二凹部351连通的第一开口322。
可选地，沿第一方向X，第一开口322的最大长度大于电芯2的厚度，且在第一方向X与第二方向Y界定出的平面中，第一开口322呈大致为扇形，第一开口322形成的扇形的半径大于第一折角部2124的宽度与第二折角部2125的宽度。
可选地，第一折角部2124与第二折角部2125置于对应的第一开口322时，不会与第一基板32产生接触。通过第一开口322为第一折角部2124及第二折角部2125提供设置空间，减少电芯2与第一支架3装配后第一折角部2124与第二折角部2125弯折损坏的情况，提高第一密封部2121与第二密封部2122之间连接处以及第一密封部2121与第三密封部2123之间连接处的密封效果。
如图8至图11所示，在一些实施方式中，第一基板32的第二侧与各第一通孔321对应的位置处设有凸台323，凸台323设有第二通孔3231，第二通孔3231沿第三方向Z贯穿凸台323并与第一通孔321连通，沿第三方向Z，第二通孔3231的投影覆盖或等于第一通孔321的投影，第一密封部2121至少部分位于第一通孔321与第二通孔3231中，提升对第一密封部2121的限位。电极端子23由第一基板32的一侧贯穿第一通孔321与第二通孔3231，并伸至第一基板32的另一侧。
在第一基板32及第一通孔321的基础上，通过设置凸台323及第二通孔3231，于第三方向Z增加了第一密封部2121的设置空间，且凸台323与第一基板32配合于第一方向X及第二方向Y对第一密封部2121进行限位，减少第一密封部2121弯折损坏的情况。
可选地，沿第三方向Z，凸台323的厚度与第一基板32的厚度之和大于或等于第一密封部2121的宽度，以使第一密封部2121完全位于第一通孔321与第二通孔3231中，提升对第一密封部2121进行保护。
在一些实施例中，第一密封部2121与第一通孔321之间为间隙配合，有利于，第一密封部2121穿过第一通孔321。可选的，沿第一方向X，第一密封部2121与第一通孔321两侧孔壁之间具有0.1mm的间隙。
在一些实施例中，第一密封部2121与第二通孔3231之间为间隙配合，有利于第一密封部2121穿过第二通孔3231。可选的，沿第一方向X,第一密封部2121与第二通孔3231两侧孔壁之间具有0.1mm的间隙。
如图10、图12、图13、图15、图18及图20至图22所示，在一些实施方式中，电池组还包括第二支架4，第二支架4设于外壳1的内部，第二支架4设有第二腔体41，各电芯2至少部分容纳于第二腔体41中，在第一方向X，第二支架4的一部分位于相邻的电芯2之间，各电芯2的至少部分位于第一支架3及第二支架4之间，各电芯2与第二支架4固定连接。
各电芯2于第三方向Z的第一侧部分地置入第一腔体31，第一支架3对电芯2于第三方向Z的第一侧进行保护，各电芯于第三方向Z的第二侧部分地置入第二腔体41，第二支架4对电芯2于第三方向Z的第二侧进行保护，并且第一支架3与第二支架4配合对各电芯2进行限位；相邻的电芯2之间通过部分第一支架3与部分第二支架4形成间隙，以为电芯2提供膨胀空间。
通过调整第一支架3位于相邻的电芯2之间的部分于第一方向X的宽度，以及第二支架4位于相邻的电芯2之间的部分于第一方向X的宽度，可以调整相邻的电芯2之间的距离。
如图20所示，在一些实施方式中，第二支架4包括第二基板42、第 五壁43、第六壁44、第七壁45和第八壁46，第五壁43、第六壁44、第七壁45和第八壁46连接于第二基板42，第五壁43与第七壁45沿第二方向Y相对，第六壁44与第八壁46沿第一方向X相对，第五壁43、第六壁44、第七壁45、第八壁46及第二基板42围合形成第二腔体41，第一部分211于第三方向Z的第二侧2112至少部分设于第二腔体41并与第二基板42连接，多个电芯2与第二基板42固定连接。
可选的，第一部分211于第三方向Z的第二侧2112至少部分设于第二腔体41并与第二基板42接触连接。可选的，第一部分211于第三方向Z的第二侧2112至少部分设于第二腔体41并与第二基板42通过粘接物质连接，比如胶水。
第五壁43、第六壁44、第七壁45、第八壁46及第二基板42一体成型，具有较好的结构强度。第二基板42能限定第一部分211于第三方向Z的第二侧2112的形状，减少第一部分211的第二侧2112变形的情况。
可选地，第二支架4采用注塑加工的方式制成。
可选地，第二支架4采用通过裁切及挖空的加工方式制成。
如图20所示，在一些实施方式中，第五壁43与第七壁45相对的一侧设有多个第三凹部431，多个第三凹部431沿第一方向X间隔布设，第七壁45与第五壁43相对的一侧设有多个第四凹部451，多个第四凹部451沿第一方向X间隔布设，多个第三凹部431与多个第四凹部451于第二方向Y对应设置，第一部分211至少部分设于相对的第三凹部431与第四凹部451之间。
第三凹部431与第四凹部451于第二方向Y供电芯2的部分置入，相对的第三凹部431与第四凹部451能相互配合于第二方向Y对电芯2进行保护，并对电芯2进行限位。
可选地，第三凹部431的形状及第四凹部451的形状，能够与电芯2于第二方向Y的两侧的边缘的形状相配合，以使电芯2顺利置入相对的第三凹部431与第四凹部451之间。可选地，沿第二方向Y,第三凹部431与相对的第四凹部451之间的最大距离大于第一部分211于第二方向Y的最大宽度，有利于将电芯2和第二支架4的组装。
在一些实施例中，，电芯2在置于第三凹部431与第四凹部451之间时，电芯2与第三凹部431之间及电芯2与第四凹部451之间为间隙配合，电芯2与第三凹部431之间及电芯2与第四凹部451之间的间隙，能为电芯2提供膨胀空间，减少第三凹部431与第四凹部451对电芯2造成的挤压磨损。可选地，电芯2与第三凹部431之间隙为0.2mm至0.3mm有利于第三凹部431对电芯2限位，可为电芯2的膨胀空间。可选的，电芯2与第四凹部451之间的间隙为0.2mm至0.3mm，有利于第四凹部451对电芯2限位，可为电芯2的膨胀空间。
在一些实施例中，电芯2在置于第三凹部431与第四凹部451之间时，电芯2与第三凹部431之间以及电芯2与第四凹部451之间通过粘接物质连接，比如胶水。在一些实施例中，电芯2在置于第三凹部431与第四凹部451之间时，电芯2与第三凹部431之间以及电芯2与第四凹部451之间直接接触连接。
如图13、图14及图18至图23所示，在一些实施方式中，第二基板42设有多个第二开口421，每个第二开口421与一个第三凹部431以及一个第四凹部451对应设置，各第二开口421沿第三方向Z贯穿第二基板42，并与对应的第三凹部431和第四凹部451连通，第一凸部2126位于与第三凹部431连通的第二开口421，第二凸部2127位于与第四凹部451连通的第二开口421。
在一些实施例中，沿第一方向X，第二开口421的长度大于第一凸部2126的长度，降低第一凸部2126和第二基板42的接触连接的风险。沿第二方向Y，第二开口421的长度大于第一凸部2126的长度，降低第一凸部2126和第二基板42的接触连接的风险。
在一些实施例中，沿第一方向X，第二开口421的长度大于第二凸部2127的长度，降低第二凸部2127和第二基板42的接触连接的风险。沿第二方向Y，第二开口421的长度大于第二凸部2127的长度，降低第二凸部2127和第二基板42的接触连接的风险。
通过第二开口421为第一凸部2126及第二凸部2127提供设置空间，减少电芯2与第二支架4装配后第一凸部2126与第二凸部2127弯折损坏 的情况，提高第二密封部2122远离第一密封部2121的端部处与第一部分211之间以及第三密封部2123远离第一密封部2121的端部处与第一部分211之间的密封效果。
如图19及图20所示，在一些实施方式中，第二基板42设有凸起部422，沿第三方向Z，凸起部422朝向电芯2延伸设置，且凸起部422于第五壁43及第七壁45之间沿第一方向X延伸设置，第一部分211的第二侧2112至少部分与凸起部422连接。可选的，第一部分211的第二侧2112至少部分与凸起部422接触连接。可选的，第一部分211的第二侧2112至少部分与凸起部422通过粘接物质连接，比如胶水。
可选地，凸起部422于第二方向Y与第三方向Z界定出的平面中的截面呈梯形。
在一些实施例中，沿第三方向Z，第一凸部2126厚度小于或等于凸起部422的厚度与第二基板42的厚度之和，有利于降低第一凸部2126延伸出第二支架4的风险，提升对电芯2的保护。
在一些实施例中，沿第三方向Z，第二凸部2127厚度小于或等于凸起部422的厚度与第二基板42的厚度之和，有利于降低第二凸部2127延伸出第二支架4的风险，提升对电芯2的保护。
在第二基板42的第二开口421的基础上，通过设置凸起部422，于第三方向Z增加了第一凸部2126与第二凸部2127的设置空间，以提升对第一凸部2126及第二凸部2127进行保护，减少第一凸部2126与第二凸部2127弯折损坏的情况。凸起部422能对第一部分211于第三方向Z的第二侧2112进行支撑，以与第一基板32配合于第三方向Z对电芯2进行支撑及限位。
在一些实施方式中，各电芯2与第一支架3通过胶粘固定，在第一基板32的至少一部分平面32a涂覆胶，各电芯2的第一部分211的表面211a与涂抹胶水的平面32a胶粘固定；各电芯2与第二支架4通过胶粘固定，在凸起部422涂布结构胶。各电芯2的第一部分211于第三方向Z的第二侧2112与凸起部422胶粘固定。以对电芯2与第一支架3、第二支架4的相对位置进行固定，并提高电芯2与第一支架3和/或第二支架4的连接强 度。
在一些实施方式中，第一支架3与外壳1通过胶粘固定，和/或，第二支架4与外壳1通过胶粘固定。以对第一支架3、第二支架4及外壳1的相对位置进行固定，并提高第一支架3和/或第二支架4与外壳1之间的连接强度。
在一些实施方式中，第一支架3及第二支架4与外壳1胶粘固定时，于外壳1的内表面与第一支架3于第二方向Y的两侧相对应的位置处涂覆胶水，并在外壳1的内表面与第二支架4于第二方向Y的两侧相对应的位置处涂布结构胶，且胶水于第三方向Z的涂布高度大于第一支架3及第二支架4于第三方向Z的厚度。
在一些实施例中，外壳1包括第一壳体11和第二壳体12，第一壳体11和第二壳体12围合形成空间。
第一壳体11和第二壳体12可通过粘接、紧固件连接或其它方式连为一体，以相互盖合并共同限定出用于容纳电芯2的空间。
可选地，第一壳体11与第二壳体12通过卡扣配合卡接。
可选地，第一壳体11和第二壳体12还可通过结构胶粘接固定。
在一些实施方式中，电池组还包括电路板5，电路板5可包括BMS组件(Battery Management System)，BMS组件包括多个电子元器件，多个电子元器件能够实现对电芯2的数据采集、控制、保护、通讯、电量计算、信号传输、电能传输等功能。电路板5可用于管理并维护各电芯2。电路板5设于外壳1内并位于第一支架3远离第一腔体31的一侧，即电路板5位于第一支架3未设有第一腔体31的一侧，且电路板5与各电极端子23相接，以实现对电芯2的充电和放电的控制。
如图24所示，在一些实施方式中，外壳1的内侧设有支撑部13，电路板5与支撑部13相接。以实现电路板5的安装并对电路板5的位置进行固定，减少电路板5相对于外壳1及各电芯2发生相对位移的情况，提高电路板5与各电芯2之间连接的有效性。
可选地，支撑部13具有两个，两个支撑部13分别设于壳体于第一方向X或第二方向Y的两相对的内表面上，电路板5于第一方向X或第二方 向Y的两侧分别与两支撑部13相接。
可选地，电路板5与支撑部13胶粘固定，以减少电路板5与支撑部13产生相对晃动而影响各电极端子23与电路板5的电连接效果的情况。
本申请实施例提供的电池组，有利于减少在相邻的电芯2间、电芯2的顶部及电芯2的底部设置泡棉，提高了组装效率并降低了成本；同时可以减少或省去灌胶步骤，减少或省去了灌胶带来的成本。
第二方面，本申请实施例提供了一种用电装置，包括用电主体以及如第一方面所述的电池组，电池组连接于用电主体，且电池组为用电主体供电。
电池组可为上述任一实施例提供的电池组。
用电主体在电能的驱动下能够实现设定的功能。用电装置可以是便携式设备、笔记本电脑、电动玩具和电动工具、储能系统等等。电动工具包括金属切削电动工具、清洁工具等，例如，电钻、电动扳手、吸尘器、扫地机器人等等。本申请实施例对上述用电装置不做特殊限制。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件，尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (20)

  1. 一种电池组，包括：
    外壳；
    多个电芯，设于所述外壳内并沿第一方向布置；以及
    第一支架，设于所述外壳内，所述第一支架设有第一腔体，各所述电芯的至少部分容纳于所述第一腔体中，所述第一支架的一部分位于相邻的所述电芯之间，所述多个电芯与所述第一支架固定连接。
  2. 根据权利要求1所述的电池组，其中，所述第一支架包括第一基板、第一壁、第二壁、第三壁及第四壁，所述第一壁、所述第二壁、所述第三壁及所述第四壁连接于所述第一基板，所述第一壁与所述第三壁相对，所述第二壁与所述第四壁相对，所述第一壁、所述第二壁、所述第三壁、所述第四壁及所述第一基板围合形成所述第一腔体，所述多个电芯与所述第一基板固定连接。
  3. 根据权利要求2所述的电池组，其中，所述电芯包括：
    电芯壳体，包括相接的第一部分和第二部分；
    电极组件，设于所述第一部分的内部；及
    电极端子，所述电极端子的一部分位于所述第一部分的内部，并连接至所述电极组件，所述电极端子的另一部分伸出所述电芯壳体。
  4. 根据权利要求3所述的电池组，其中，所述第二部分包括第一密封部、第二密封部和第三密封部，所述第二密封部与所述第三密封部分别位于所述第一部分于第二方向的两侧，所述第一部分于第三方向具有第一侧，所述第一密封部位于所述第一侧，所述第一密封部分别与所述第二密封部、所述第三密封部相接，所述电极端子的另一部分由所述第一密封部伸出，
    所述第一方向、所述第二方向及所述第三方向相互垂直。
  5. 根据权利要求4所述的电池组，其中，所述第一部分的第一侧至少 部分设于所述第一腔体并与所述第一基板连接。
  6. 根据权利要求5所述的电池组，其中，所述第一部分的第一侧具有表面，所述表面朝向所述第一基板设置，所述表面和所述第一基板通过粘接物质连接。
  7. 根据权利要求5所述的电池组，其中，所述第一基板设有多个第一通孔，多个所述第一通孔沿所述第一方向间隔布设，所述第一通孔沿所述第二方向延伸设置并沿所述第三方向贯穿所述第一基板，所述第一密封部的至少部分由所述第一通孔穿过所述第一基板，各所述电极端子由所述第一基板的一侧穿过所述第一通孔延伸至所述第一基板的另一侧。
  8. 根据权利要求7所述的电池组，其中，所述第一基板的另一侧与各所述第一通孔对应的位置处设有凸台，所述凸台设有第二通孔，所述第二通孔沿所述第三方向贯穿所述凸台并与所述第一通孔连通，沿所述第三方向，所述第二通孔的投影覆盖或等于所述第一通孔的投影，所述第一密封部的至少部分位于所述第一通孔与所述第二通孔中，且所述电极端子由所述第一基板的一侧贯穿所述第一通孔与所述第二通孔，并伸至所述第一基板的另一侧。
  9. 根据权利要求4-8任一项所述的电池组，其中，所述第一密封部与所述第二密封部的连接处形成第一折角部，所述第一密封部与所述第三密封部的连接处形成第二折角部。
  10. 根据权利要求9所述的电池组，其中，所述第一壁与所述第三壁相对的一侧设有多个第一凹部，多个所述第一凹部沿所述第一方向间隔布设，所述第三壁与所述第一壁相对的一侧设有多个第二凹部，多个所述第二凹部沿所述第一方向间隔布设，多个所述第一凹部与多个所述第二凹部于所述第二方向对应设置，所述第一部分至少部分设于相对的所述第一凹部与所述第二凹部之间。
  11. 根据权利要求10所述的电池组，其中，所述第一基板设有多个第一开口，各所述第一开口沿所述第三方向贯穿所述第一基板，并与所述第一凹部和所述第二凹部连通，所述第一折角部位于与所述第一凹部连通的所述第一开口，所述第二折角部位于与所述第二凹部连通的所述第一开口。
  12. 根据权利要求9所述的电池组，其中，所述电池组还包括第二支架，所述第二支架也设于所述外壳的内部，所述第二支架设有第二腔体，各所述电芯至少部分容纳于所述第二腔体中，在所述第一方向，所述第二支架的一部分位于相邻的所述电芯之间，各所述电芯的至少部分位于所述第一支架及所述第二支架之间，所述多个电芯与所述第二支架固定连接。
  13. 根据权利要求12所述的电池组，其中，所述第二支架包括第二基板、第五壁、第六壁、第七壁和第八壁，所述第五壁、所述第六壁、所述第七壁和所述第八壁连接于所述第二基板，所述第五壁与所述第七壁相对，所述第六壁与所述第八壁相对，所述第五壁、所述第六壁、所述第七壁、所述第八壁及所述第二基板围合形成所述第二腔体，所述第一部分的第二侧至少部分设于所述第二腔体并与所述第二基板连接，所述多个电芯与所述第二基板固定连接。
  14. 根据权利要求13所述的电池组，其中，所述第五壁与所述第七壁相对的一侧设有多个第三凹部，多个所述第三凹部沿所述第一方向间隔布设，所述第七壁与所述第五壁相对的一侧设有多个第四凹部，多个所述第四凹部沿所述第一方向间隔布设，多个所述第三凹部与多个所述第四凹部于所述第二方向对应设置，所述第一部分至少部分设于相对的所述第三凹部与所述第四凹部之间。
  15. 根据权利要求14所述的电池组，其中，所述第一部分于所述第三方向具有第二侧，所述第二侧与所述第一侧相对，所述第二密封部的一部分凸出于所述第二侧并形成第一凸部，所述第三密封部的一部分凸出于所 述第二侧并形成第二凸部。
  16. 根据权利要求15所述的电池组，其中，所述第二基板设有多个第二开口，各所述第二开口沿所述第三方向贯穿所述第二基板，并与对应的所述第三凹部和所述第四凹部连通，所述第一凸部至少部分位于与所述第三凹部连通的所述第二开口，所述第二凸部至少部分位于所述第四凹部连通的所述第二开口。
  17. 根据权利要求13所述的电池组，其中，所述第二基板设有凸起部，沿所述第三方向，所述凸起部朝向所述电芯延伸设置，且所述凸起部于所述第五壁及所述第七壁之间沿所述第一方向延伸设置，所述第一部分的第二侧与所述凸起部连接。
  18. 根据权利要求3所述的电池组，其中，所述电池组还包括电路板，所述电路板设于所述外壳内并位于所述第一支架远离所述第一腔体的一侧，且所述电路板与各所述电极端子相接。
  19. 根据权利要求18所述的电池组，其中，所述外壳的内侧设有支撑部，所述电路板与所述支撑部相接。
  20. 一种用电装置，包括用电主体以及如权利要求1至19中任一项所述的电池组，所述电池组为所述用电主体供电。
PCT/CN2022/112881 2022-08-16 2022-08-16 电池组及用电装置 WO2024036494A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/112881 WO2024036494A1 (zh) 2022-08-16 2022-08-16 电池组及用电装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/112881 WO2024036494A1 (zh) 2022-08-16 2022-08-16 电池组及用电装置

Publications (1)

Publication Number Publication Date
WO2024036494A1 true WO2024036494A1 (zh) 2024-02-22

Family

ID=89940393

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/112881 WO2024036494A1 (zh) 2022-08-16 2022-08-16 电池组及用电装置

Country Status (1)

Country Link
WO (1) WO2024036494A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211150635U (zh) * 2019-12-27 2020-07-31 湖南电将军新能源有限公司 一种软包电池模组用支架及软包电池模组
CN113314812A (zh) * 2021-06-25 2021-08-27 东莞新能安科技有限公司 电池组及用电设备
CN114335676A (zh) * 2022-02-10 2022-04-12 珠海冠宇电源有限公司 电池
CN216750125U (zh) * 2022-01-17 2022-06-14 阜阳隆能科技有限公司 一种软包电芯模组的安装结构
WO2022160264A1 (zh) * 2021-01-29 2022-08-04 东莞新能安科技有限公司 一种电池包及用电设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211150635U (zh) * 2019-12-27 2020-07-31 湖南电将军新能源有限公司 一种软包电池模组用支架及软包电池模组
WO2022160264A1 (zh) * 2021-01-29 2022-08-04 东莞新能安科技有限公司 一种电池包及用电设备
CN113314812A (zh) * 2021-06-25 2021-08-27 东莞新能安科技有限公司 电池组及用电设备
CN216750125U (zh) * 2022-01-17 2022-06-14 阜阳隆能科技有限公司 一种软包电芯模组的安装结构
CN114335676A (zh) * 2022-02-10 2022-04-12 珠海冠宇电源有限公司 电池

Similar Documents

Publication Publication Date Title
JP4812926B2 (ja) 電池パック
EP2541650B1 (en) Rechargeable battery having improved gasket and terminal structure
US20060244416A1 (en) Battery pack having very thin thickness
KR101296964B1 (ko) 배터리 팩
KR20120005930A (ko) 리튬 폴리머 배터리용 배터리 팩
WO2022041821A1 (zh) 箱体、电池、用电设备及箱体的组装方法
KR20220081822A (ko) 배터리 모듈
CN216389548U (zh) 电池单体、电池以及用电装置
CN214153051U (zh) 电池组
CN212434750U (zh) 电池外壳及带有该电池外壳的电池包
WO2022001168A1 (zh) 一种电池包结构
WO2024036494A1 (zh) 电池组及用电装置
JP2002124233A (ja) 電池パック
CN113782918B (zh) 电芯及用电装置
CN115699425A (zh) 电池外壳及带有该电池外壳的电池包
WO2023184389A1 (zh) 电池组、电池组的制造方法和用电装置
JP4916734B2 (ja) 電動リール用バッテリー
CN217507510U (zh) 电池组和用电装置
CN218919155U (zh) 一种电池包
CN217387476U (zh) 电池组和用电装置
CN220710428U (zh) 电池和用电设备
CN116014383B (zh) 顶贴片、储能装置及用电设备
CN217589151U (zh) 电池与用电设备
CN219658854U (zh) 一种锂离子电池
CN217387319U (zh) 扣式锂离子电池及电子产品

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22955276

Country of ref document: EP

Kind code of ref document: A1