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CN-224232798-U - Battery pack

CN224232798UCN 224232798 UCN224232798 UCN 224232798UCN-224232798-U

Abstract

The utility model relates to the technical field of batteries and discloses a battery pack which comprises a shell assembly, a battery module, a circuit board assembly and an auxiliary functional module, wherein the shell assembly comprises a shell and a shell cover, the shell is provided with a containing cavity, the battery module is arranged in the containing cavity and is provided with an electrode connecting piece, the circuit board assembly comprises a first circuit board and a second circuit board which are parallel to each other, the first circuit board and the second circuit board are overlapped in a projection mode along the length direction of the shell assembly, the first circuit board is detachably connected with the electrode connecting piece, the second circuit board is electrically connected with the first circuit board, the main electric module comprises a main electric module and an auxiliary functional module, one end of the main electric module penetrates through the shell cover and is exposed, the other end of the main electric module is detachably connected with an air switch and a wiring terminal on the first circuit board, and the main electric module can be electrically connected with the battery module through the first circuit board. The utility model has the advantages of low manufacturing cost, high assembly efficiency and compact structure.

Inventors

  • HAO DING
  • LIU WEI
  • MA QIANG
  • LIU LUXIN

Assignees

  • 宁波德业储能科技有限公司

Dates

Publication Date
20260512
Application Date
20250418

Claims (16)

  1. 1. A battery pack, comprising: the shell assembly (100), the shell assembly (100) comprises a shell (110) and a shell cover (120), the shell cover (120) is detachably arranged on the shell (110), and the shell (110) is provided with a containing cavity (111); The battery module (200) is arranged in the accommodating cavity (111) and is provided with an electrode connecting piece (210); The circuit board assembly (300), the circuit board assembly (300) comprises a first circuit board (310) and a second circuit board (320) which are arranged between the battery module (200) and the shell cover (120) and are parallel to each other, the first circuit board (310) and the second circuit board (320) are overlapped along the projection of the length direction of the shell assembly (100), wherein the first circuit board (310) is detachably connected with the electrode connecting piece (210), and the second circuit board (320) is electrically connected with the first circuit board (310); The electric function module comprises a main electric module (400) and an auxiliary function module (500), wherein the main electric module (400) comprises an air switch (410) and a wiring terminal (420), one end of the air switch (410) and one end of the wiring terminal (420) penetrate through the shell cover (120) and are exposed, the other end of the air switch is detachably connected to the first circuit board (310) and can be electrically connected with the battery module (200) through the first circuit board (310), and the auxiliary function module (500) is arranged on the second circuit board (320) and can be electrically connected with the battery module (200) through the second circuit board (320).
  2. 2. The battery pack according to claim 1, wherein the second circuit board (320) is disposed between the first circuit board (310) and the housing cover (120) and is located on a side of the first circuit board (310) away from the main electrical module (400), and the second circuit board (320) has a smaller size than the first circuit board (310).
  3. 3. The battery pack of claim 2, wherein the circuit board assembly (300) further comprises a metal mounting bracket (330) disposed between the second circuit board (320) and the housing cover (120), one side of the metal mounting bracket (330) is detachably connected to the housing cover (120), the other side is detachably connected to the first circuit board (310), and the second circuit board (320) is detachably disposed on the metal mounting bracket (330).
  4. 4. A battery pack according to claim 3, wherein the metal mounting frame (330) is provided with a first groove (331) recessed along a direction away from the first circuit board (310), the second circuit board (320) is detachably disposed in the first groove (331) through a fastener, the bottom wall of the first groove (331) is provided with at least one first mounting hole (332), and the bottom wall of the first groove (331) is provided with a plurality of first notches (333) through which the auxiliary function module (500) passes.
  5. 5. The battery pack according to claim 4, wherein a first mounting edge (334) is disposed on a side edge of the first groove (331), the first mounting edge (334) is parallel to the first circuit board (310) and has a height difference with a bottom wall of the first groove (331), the first mounting edge (334) is detachably connected with the first circuit board (310) through a fastener, at least one second mounting hole (335) is disposed on the bottom wall of the first groove (331), a first fixing seat (121) corresponding to the second mounting hole (335) is disposed on the cover (120), and the first fixing seat (121) is connected with the second mounting hole (335) through a fastener.
  6. 6. The battery pack according to claim 4, wherein the metal mounting frame (330) is further provided with a second groove (336) arranged side by side with the first groove (331), the second groove (336) is opposite to the first groove (331), and a heat conductive member is provided between an outer wall of the second groove (336) and the first circuit board (310).
  7. 7. The battery pack according to claim 6, wherein a second mounting edge (337) is provided on a side edge of the second groove (336), the second mounting edge (337) is parallel to the housing cover (120) and has a height difference with a bottom wall of the second groove (336), a second fixing seat (122) corresponding to the second mounting edge (337) is provided on the housing cover (120), the second fixing seat (122) is detachably connected with the second mounting edge (337) through a fastener, at least one third mounting hole (338) is provided on a bottom wall of the second groove (336), the third mounting hole (338) is detachably connected with the first circuit board (310) through a fastener, and a plurality of second notches (339) penetrating through the second groove (336) are provided on the second groove (336).
  8. 8. The battery pack according to claim 1, wherein the first circuit board (310) is provided with a positive electrode mount (311) and a negative electrode mount (312), and the electrode connection member (210) includes a positive electrode connection piece (211) detachably connected to the positive electrode mount (311) by a fastener, and a negative electrode connection piece (212) detachably connected to the negative electrode mount (312) by a fastener.
  9. 9. A battery pack according to claim 1, wherein the first circuit board (310) is provided with two sets of first electrical terminals (313) penetrating through the first circuit board, the terminal (420) comprises a positive terminal (421) and a negative terminal (422), wherein the positive terminal (421) comprises a first joint (421 a), a second joint (421 b) and a positive conductive member (421 c), one end of the positive conductive member (421 c) is abutted with the first joint (421 a), the other end is abutted with the second joint (421 b), and the first electrical terminal (422) has a first fixing part (421 d) detachably connected with one set of the first electrical terminals (313), the negative terminal (422) comprises a third joint (422 a), a fourth joint (422 b) and a negative conductive member (422 c), one end of the negative conductive member (422 c) is abutted with the third joint (422 a), the other end is abutted with the fourth joint (422 b), and the second electrical terminal (422 d) has a second fixing part detachably connected with the other set of the first electrical terminals (313).
  10. 10. A battery pack according to claim 1, wherein the first circuit board (310) is provided with a second electrical terminal (314) penetrating through itself, and the air switch (410) is detachably connected to the second electrical terminal (314) by a fastener.
  11. 11. The battery pack according to claim 1, wherein the cover (120) is provided with a first interface (130) through which the air switch (410) passes, the first interface (130) is provided with a first mounting portion (131) and a second mounting portion (132) extending vertically outwards along the outer wall of the cover (120), the first interface (130) is detachably covered with a protective cover (600), one end of the protective cover (600) is rotatably connected with the first mounting portion (131), and the other end of the protective cover is in snap connection with the second mounting portion (132).
  12. 12. The battery pack according to claim 1, wherein the auxiliary functional module (500) comprises a wireless communication connector (510) detachably plugged on the second circuit board (320), a second interface (140) through which the wireless communication connector (510) passes is arranged on the shell cover (120), a first shielding member (700) is detachably covered on the second interface (140), a first sealing member (800) is arranged between the first shielding member (700) and the second interface (140), and the first sealing member (800) has an elastic deformation amount and can be elastically deformed under pressure when the first shielding member (700) is fixed on the second interface (140).
  13. 13. The battery pack according to claim 12, wherein the second port (140) comprises a third groove (141), the first shielding member (700) is embedded in the third groove (141) and has a fourth groove (701) circumferentially arranged along the first port, the first sealing member (800) is arranged between the fourth groove (701) and the third groove (141) and is abutted against inner walls of the fourth groove (701) and the third groove (141), respectively, and the height of the first sealing member (800) after being elastically deformed under pressure is 60% of the height of the third groove (141).
  14. 14. The battery pack according to claim 1, wherein the auxiliary functional module (500) further comprises an ethernet connector (520) detachably plugged on the second circuit board (320), the cover (120) is provided with a third interface (150) through which the ethernet connector (520) passes, the third interface (150) is detachably provided with a second shielding member (710), the third interface (150) comprises a fifth groove (151) and a sixth groove (152) which are respectively communicated with the outside, the fifth groove (151) surrounds the sixth groove (152), a blocking portion (153) is arranged between the fifth groove (151) and the sixth groove (152), and the second shielding member (710) extends into the fifth groove (151).
  15. 15. The battery pack according to claim 1, comprising an indicator lamp module (900) disposed in the accommodating cavity (111), wherein the indicator lamp module (900) comprises a lamp holder (910) and an indicator lamp (920), the lamp holder (910) is detachably connected with the housing cover (120), one end of the indicator lamp (920) penetrates through the lamp holder (910), the other end penetrates through the housing cover (120) and is exposed, a fourth interface (160) through which the indicator lamp (920) penetrates is disposed on the housing cover (120), a second sealing member (810) is disposed between the fourth interface (160) and the indicator lamp (920), and the second sealing member (810) has an elastic deformation amount and can be elastically deformed under pressure when the lamp holder (910) is fixed on the housing cover (120).
  16. 16. The battery pack according to claim 1, wherein the cover (120) is a plastic member, and a metal reinforcing rib (123) is detachably provided on a side of the cover (120) facing the accommodating chamber (111), and the metal reinforcing rib (123) extends along a length direction of the cover (120).

Description

Battery pack Technical Field The utility model relates to the technical field of batteries, in particular to a battery pack. Background In existing battery pack designs, air switches and terminals are typically mounted on the end caps of the battery pack and are connected to the PCB board and the electrode terminals of the battery module, respectively, by wires. The layout mode needs to wire a plurality of components, so that the production cost of the battery pack is increased, the assembly time of the battery pack is prolonged, and the later maintenance and fault investigation are more complicated. In addition, excessive interconnects may also affect the heat dissipation performance of the battery pack, thereby bringing about a safety hazard. Disclosure of utility model Aiming at the defects in the prior art, the utility model aims to solve the technical problems of providing a battery pack with low manufacturing cost, high assembly efficiency and compact structure. The utility model solves the technical problems by adopting the technical proposal that a battery pack comprises: The shell assembly comprises a shell body and a shell cover, wherein the shell cover is detachably arranged on the shell body and is provided with a containing cavity; the battery module is arranged in the accommodating cavity and is provided with an electrode connecting piece; The circuit board assembly comprises a first circuit board and a second circuit board which are arranged between the battery module and the shell cover and are parallel to each other, and the projection of the first circuit board and the projection of the second circuit board along the length direction of the shell assembly are overlapped, wherein the first circuit board is detachably connected with the electrode connecting piece, and the second circuit board is electrically connected with the first circuit board; The electric function module comprises a main electric module and an auxiliary function module, wherein the main electric module comprises an air switch and a wiring terminal, one end of the air switch and one end of the wiring terminal penetrate through the shell cover and are exposed, the other end of the air switch and one end of the wiring terminal are detachably connected to the first circuit board and can be electrically connected with the battery module through the first circuit board, and the auxiliary function module is arranged on the second circuit board and can be electrically connected with the battery module through the second circuit board. Further, the second circuit board is disposed between the first circuit board and the cover, and is located at a side of the first circuit board away from the main electrical module, and the size of the second circuit board is smaller than that of the first circuit board. Further, the circuit board assembly further comprises a metal mounting frame arranged between the second circuit board and the shell cover, one side of the metal mounting frame is detachably connected with the shell cover, the other side of the metal mounting frame is detachably connected with the first circuit board, and the second circuit board is detachably arranged on the metal mounting frame. Further, be equipped with on the metal mounting bracket along keeping away from first circuit board direction sunken first recess, the second circuit board passes through the fastener detachably and locates in the first recess, just be equipped with at least one first mounting hole on the diapire of first recess, be equipped with a plurality of confession on the diapire of first recess the first breach that auxiliary function module passed. Further, the side of first recess is equipped with first installation limit, first installation limit with first circuit board is parallel, and with have the difference in height between the diapire of first recess, first installation limit accessible fastener with first circuit board can dismantle the connection, just be equipped with at least one second mounting hole on the diapire of first recess, be equipped with on the cap with the first fixing base that the second mounting hole corresponds, just first fixing base with second mounting hole accessible fastener is connected. Further, the metal mounting frame is further provided with a second groove which is arranged side by side with the first groove, the second groove is opposite to the first groove in the sinking direction, and a heat conducting piece is arranged between the outer wall of the second groove and the first circuit board. Further, the side of second recess is equipped with the second installation limit, the second installation limit with the cap is parallel, and with have the difference in height between the diapire of second recess, be equipped with on the cap with the second fixing base that the second installation limit corresponds, just second fixing base accessible fastener with the connection can be dismantled to the second in