Power battery module

Abstract

The utility model discloses a power battery module, including first support, second support and a plurality of cylindrical power battery, a plurality of cylindrical power battery form battery pack, and the battery pack has first end and second end, and first end is connected with a plurality of first tab and a plurality of second tab, and a plurality of first tab is connected with a plurality of first signal acquisition line, and a plurality of second tab is connected with a plurality of second signal acquisition line, first support has the first extension plate outwardly, and first extension plate is arranged with a plurality of first slot, and first signal acquisition line is arranged in first slot and extends to the side of first extension plate towards second support, first support still has the second extension plate outwardly, and second extension plate is arranged with a plurality of second slot, and second signal acquisition line is arranged in second slot and extends to the side of second extension plate towards second support, the utility model discloses through setting first extension plate and second extension plate, and the first signal acquisition line and second signal acquisition line are effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a power battery module. Background Technology

[0002] A power battery module typically consists of two brackets and a power battery sandwiched between them. Since the power battery needs to acquire signals, multiple signal acquisition lines are usually set up to ensure the accuracy of the signal acquisition. However, the wiring of the signal acquisition lines in existing power battery modules is very messy. During the assembly process, cylindrical power batteries often press on the signal acquisition lines, requiring reassembly. This makes the assembly of existing power battery modules complex and poses a high safety risk. Summary of the Invention

[0003] The purpose of this utility model is to provide a power battery module to solve the problem that the assembly of the power battery module in the prior art is complicated and has high safety risks because the signal acquisition line is pressed during the assembly process.

[0004] To achieve the above objectives, this utility model provides a power battery module, including a first bracket, a second bracket, and a plurality of cylindrical power batteries sandwiched between the first bracket and the second bracket. The plurality of cylindrical power batteries form a battery pack. The battery pack has a first end for cooperating with the first bracket and a second end for cooperating with the second bracket. The first end is connected to a plurality of first tabs and a plurality of second tabs. The first tabs and the second tabs extend to opposite sides of the first end, respectively. The plurality of first tabs are connected to a plurality of first signal acquisition lines, and the plurality of second tabs are connected to a plurality of second signal acquisition lines. The first bracket has a first extension plate extending outward corresponding to the plurality of first signal acquisition lines. The first extension plate has a plurality of... A first slot extends through the first extension plate along its thickness direction. A plurality of first signal acquisition lines pass through the first slots from the side away from the second bracket and extend to the side of the first extension plate facing the second bracket to electrically connect to the circuit board. The first bracket also has a second extension plate extending outward corresponding to the plurality of second signal acquisition lines. A plurality of second slots are arranged along the length direction of the second extension plate. The second slots extend through the second extension plate along its thickness direction. A plurality of second signal acquisition lines pass through the second slots from the side away from the second bracket and extend to the side of the second extension plate facing the second bracket to electrically connect to the circuit board.

[0005] Preferably, the first slot extends from the first outer side of the first extension plate away from the battery pack toward the inner side of the first extension plate, and the second slot extends from the second outer side of the second extension plate away from the battery pack toward the inner side of the second extension plate.

[0006] Preferably, the surface of the first extension plate facing the second bracket is further provided with a plurality of first snap-fit ​​springs along the length direction for threading the first signal acquisition line. The first snap-fit ​​springs are L-shaped and include a first elastic vertical piece and a first elastic horizontal piece. One end of the first elastic vertical piece is connected to the first extension plate and the other end of the first elastic vertical piece is connected to one end of the first elastic horizontal piece. The other end of the first elastic horizontal piece is a free end and is positioned facing the first bracket so that the first signal acquisition line is limited between the first snap-fit ​​spring and the first bracket.

[0007] Preferably, the system further includes a positive power line and a negative power line for electrical connection with the cylindrical power battery. The second extension plate is also provided with a positive power slot and a negative power slot corresponding to the positive power line and the negative power line. The positive power slot and the negative power slot penetrate the second extension plate along the thickness direction of the second extension plate. The positive power line passes through the positive power slot from the side away from the second bracket and extends to the side of the second extension plate facing the second bracket to electrically connect to an external power interface. The negative power line passes through the negative power slot from the side away from the second bracket and extends to the side of the second extension plate facing the second bracket to electrically connect to the external power interface.

[0008] Preferably, at least one first annular buckle is arranged on the surface of the second extension plate facing the second bracket, and the power battery module further includes a first cable tie corresponding to the first annular buckle. The first cable tie passes through the first annular buckle and binds and fixes the positive power line and at least part of the second signal acquisition line.

[0009] Preferably, the second end is connected to a plurality of third tabs and a plurality of fourth tabs, the third tabs and the fourth tabs extending to opposite sides of the second end respectively. The plurality of third tabs are connected to a plurality of third signal acquisition lines, and the plurality of fourth tabs are connected to a plurality of fourth signal acquisition lines. The second bracket has a third extension plate extending outwards corresponding to the plurality of third signal acquisition lines. The third extension plate is disposed opposite to the first extension plate. The third extension plate has a plurality of third slots arranged along its length direction. The third slots penetrate the third extension plate along its thickness direction. The plurality of third signal acquisition lines extend from the plurality of third slots away from the first... One side of a bracket passes through the third slot and extends to the side of the third extension plate facing the first bracket to electrically connect to the circuit board; the second bracket also has a fourth extension plate extending outward corresponding to a plurality of fourth signal acquisition lines, the fourth extension plate having a plurality of fourth slots arranged along its length direction, the fourth slots penetrating the fourth extension plate along its thickness direction, the fourth extension plate being disposed opposite to the second extension plate, the plurality of fourth signal acquisition lines passing through the fourth slots from the side of the plurality of fourth slots away from the first bracket and extending to the side of the fourth extension plate facing the first bracket to electrically connect to the circuit board.

[0010] Preferably, the surface of the third extension plate facing the first bracket is further provided with a plurality of second snap-fit ​​springs along its length for threading the third signal acquisition line. The second snap-fit ​​springs are L-shaped and include a second elastic vertical piece and a second elastic horizontal piece. One end of the second elastic vertical piece is connected to the third extension plate, and the other end of the second elastic vertical piece is connected to one end of the second elastic horizontal piece. The other end of the second elastic horizontal piece is a free end and is positioned towards the second bracket so that the third signal acquisition line is limited between the second snap-fit ​​spring and the second bracket. The surface of the fourth extension plate facing the first bracket is further provided with a plurality of third snap-fit ​​springs along its length for threading the fourth signal acquisition line. The third snap-fit ​​springs are L-shaped and include a third elastic vertical piece and a third elastic horizontal piece. One end of the third elastic vertical piece is connected to the fourth extension plate, and the other end of the third elastic vertical piece is connected to one end of the third elastic horizontal piece. The other end of the third elastic horizontal piece is a free end and is positioned towards the second bracket so that the fourth signal acquisition line is limited between the third snap-fit ​​spring and the second bracket.

[0011] Preferably, the extension direction of the fourth extension plate is a first direction, the circuit board is disposed on one side of the first bracket and the second bracket in a second direction perpendicular to the first direction, the second bracket has a first length in the length direction of the fourth extension plate, the first length is greater than the length of the fourth extension plate so as to form an avoidance gap between the end of the second bracket near the circuit board and the fourth extension plate, the second bracket is provided with a second annular buckle corresponding to the avoidance gap, the power battery module also includes a second cable tie corresponding to the second annular buckle, the second cable tie is inserted into the second annular buckle and binds and fixes multiple fourth signal acquisition lines.

[0012] Preferably, the circuit board is provided with a signal line interface, and the second bracket is also provided with a third annular buckle corresponding to the signal line interface. The power battery module also includes a third cable tie corresponding to the second annular buckle. The third cable tie is inserted into the third annular buckle and used to secure the second signal acquisition line, the third signal acquisition line, and the fourth signal acquisition line.

[0013] Preferably, the negative power line and the positive power line are connected by a wire clamp on the part of the circuit board, and the wire clamp is also provided with a screw, which is connected to the top cover of the power battery module.

[0014] Compared with the prior art, this utility model provides a first extension plate and a second extension plate on both sides of the first bracket corresponding to the first signal acquisition line and the second signal acquisition line, respectively. This allows the first signal acquisition line and the second signal acquisition line to be separated and extended along the first extension plate and the second extension plate, ensuring smooth routing of the first signal acquisition line and the second signal acquisition line and effectively protecting the first signal acquisition line and the second signal acquisition line. It is easy to assemble and has good safety. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the first bracket at one angle in an embodiment of this utility model.

[0016] Figure 2 This is a structural diagram of the first bracket from another angle in an embodiment of this utility model.

[0017] Figure 3 This is a structural diagram of the second bracket at one angle in an embodiment of this utility model.

[0018] Figure 4 This is a structural diagram of the second bracket from another angle in an embodiment of this utility model.

[0019] Figure 5This is a structural diagram of the first bracket, second bracket, cylindrical power battery, first signal acquisition line, second signal acquisition line, third signal acquisition line, fourth signal acquisition line, positive power line, and negative power line after assembly in an embodiment of this utility model.

[0020] Figure 6 This is a structural diagram from another angle showing the assembly of the first bracket, second bracket, cylindrical power battery, first signal acquisition line, second signal acquisition line, third signal acquisition line, fourth signal acquisition line, positive power line, and negative power line in this embodiment of the present invention.

[0021] Figure 7 This is a structural diagram from another angle showing the assembly of the first bracket, second bracket, cylindrical power battery, first signal acquisition line, second signal acquisition line, third signal acquisition line, fourth signal acquisition line, positive power line, and negative power line in this embodiment of the present invention.

[0022] Figure 8 This is a structural diagram of the power battery module according to an embodiment of the present invention.

[0023] Figure 9 for Figure 8 Enlarged view of point A in the middle.

[0024] Explanation of reference numerals in the attached diagram:

[0025] 1. First bracket; 11. First extension plate; 111. First slot; 112. First snap-fit ​​spring; 1121. First elastic vertical piece; 1122. First elastic horizontal piece; 12. Second extension plate; 121. Second slot; 122. First annular buckle; 123. Positive power supply slot; 124. Negative power supply slot; 13. First mounting slot; 131. First through hole; 2. Second bracket; 21. Third extension plate; 211. Third slot; 212. Second snap-fit ​​spring; 2121. Second elastic vertical piece; 2122. Second elastic horizontal piece; 22. Fourth extension plate; 221. Fourth slot; 222. Third snap-fit ​​spring; 2221. Third elastic vertical piece; 2222. Third elastic horizontal piece; 23. Avoidance 1. Notch; 24. Second annular buckle; 25. Third annular buckle; 26. Second mounting groove; 261. Second through hole; 3. Cylindrical power battery; 41. First tab; 42. Second tab; 43. Third tab; 44. Fourth tab; 51. First signal acquisition line; 52. Second signal acquisition line; 53. Third signal acquisition line; 54. Fourth signal acquisition line; 61. Positive power line; 62. Negative power line; 71. First cable tie; 72. Second cable tie; 73. Third cable tie; 81. First nickel sheet; 82. Second nickel sheet; 9. Circuit board; 91. Signal line interface; 10. External power interface; 100. Power battery module; 101. Housing; 102. Top cover; 103. Cable clip; 104. Screw. Detailed Implementation

[0026] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0027] like Figures 1 to 9As shown, this utility model embodiment provides a power battery module, including a first bracket 1, a second bracket 2, and a plurality of cylindrical power batteries 3 sandwiched between the first bracket 1 and the second bracket 2. The plurality of cylindrical power batteries 3 form a battery pack. The battery pack has a first end for cooperating with the first bracket 1 and a second end for cooperating with the second bracket 2. The first end is connected to a plurality of first tabs 41 and a plurality of second tabs 42. The first tabs 41 and the second tabs 42 extend to opposite sides of the first end, respectively. The plurality of first tabs 41 are connected to a plurality of first signal acquisition lines 51, and the plurality of second tabs 42 are connected to a plurality of second signal acquisition lines 52. The first bracket 1 has a first extension plate 11 extending outward corresponding to the plurality of first signal acquisition lines 51. The first extension plate 11 has a plurality of first slots 11 arranged along its length direction. 1. A first slot 111 extends through the first extension plate 11 along the thickness direction of the first extension plate 11. A plurality of first signal acquisition lines 51 pass through the first slots 111 from the side away from the second bracket 2 and extend to the side of the first extension plate 11 facing the second bracket 2 to electrically connect to the circuit board 9. The first bracket 1 also has a second extension plate 12 extending outward corresponding to a plurality of second signal acquisition lines 52. A plurality of second slots 121 are arranged along the length direction of the second extension plate 12. The second slots 121 extend through the second extension plate 12 along the thickness direction of the second extension plate 12. A plurality of second signal acquisition lines 52 pass through the second slots 121 from the side away from the second bracket 2 and extend to the side of the second extension plate 12 facing the second bracket 2 to electrically connect to the circuit board 9.Specifically, according to the preset arrangement rules of the cylindrical power batteries 3 in the power battery module 100, a plurality of first mounting slots 13 are provided on the first bracket 1, and a plurality of second mounting slots 26 are provided on the second bracket 2 corresponding to the plurality of first mounting slots 13. Each first mounting slot 13 and its corresponding second mounting slot 26 cooperate to clamp a cylindrical power battery 3. A first through hole 131 is opened at the bottom of the first mounting slot 13, and a second through hole 261 is opened at the bottom of the second mounting slot 26. The first through hole 131 and the second through hole 261 are used to expose the positive and negative terminals of the clamped cylindrical power battery 3. The first end is connected to a plurality of first nickel plates 81. The structures of the plurality of first nickel plates 81 can be different to connect the required number of cylindrical power batteries 3 as needed. For example, some of the first nickel plates 81 can be elongated to electrically connect four cylindrical power batteries 3 arranged in sequence, so as to electrically connect the positive terminals of two of the cylindrical power batteries 3 to the negative terminals of the other two cylindrical power batteries 3. The first nickel plates 81 are mounted on the outward-facing side of the first bracket 1. The plurality of first nickel plates 81 are respectively connected to first tabs 41 and second tabs 42. The first tabs 41 and second tabs 42 are respectively connected to the battery. The battery pack extends to both sides, for example, the battery pack as a whole has a cuboid structure, that is, both the first bracket 1 and the second bracket 2 have a cuboid structure, and the first tab 41 and the second tab 42 extend along the width direction of the battery pack so that the first extension plate 11 and the second extension plate 12 are arranged along the length direction of the first bracket 1, that is, the length direction of the first extension plate 11 and the second extension plate 12 is the same as the length direction of the first bracket 1. Each first tab 41 is connected to a first signal acquisition line 51, and each second tab 42 is connected to a second signal acquisition line 52, through the first slot 111 and the second slot 121. The design cleverly separates the first signal acquisition lines 51 and the second signal acquisition lines 52, preventing them from being scattered. Furthermore, by directing the first signal acquisition lines 51 to the side of the first extension plate 11 facing the first bracket 1 and the second signal acquisition lines 52 to the side of the second extension plate 12 facing the first bracket 1, the design prevents the first and second signal acquisition lines 51 and 52 from being squeezed during assembly, effectively protecting them.

[0028] This utility model embodiment provides a first extension plate 11 and a second extension plate 12 on both sides of the first bracket corresponding to the first signal acquisition line 51 and the second signal acquisition line 52, respectively. This allows the first signal acquisition line 51 and the second signal acquisition line 52 to be separated and extended along the first extension plate 11 and the second extension plate 12, ensuring smooth routing of the first signal acquisition line 51 and the second signal acquisition line 52 and effectively protecting the first signal acquisition line 51 and the second signal acquisition line 52. It is easy to assemble and has good safety.

[0029] In this embodiment of the utility model, such as Figures 1 to 2 as well as Figures 5 to 6 As shown, the first slot 111 extends from the first outer side of the first extension plate 11 away from the battery pack to the inner side of the first extension plate 11, and the second slot 121 extends from the second outer side of the second extension plate 12 away from the battery pack to the inner side of the second extension plate 12, so that the first signal acquisition line 51 and the second signal acquisition line 52 can be more easily embedded in the first slot 111 and the second slot 121. Of course, in some other specific embodiments, the first slot 111 and the second slot 121 can also be slots.

[0030] In this embodiment of the utility model, such as Figure 1 as well as Figure 5 As shown, the surface of the first extension plate 11 facing the second bracket 2 is also provided with a plurality of first snap-fit ​​springs 112 for threading the first signal acquisition line 51 along the length direction. The first snap-fit ​​springs 112 are L-shaped and include a first elastic vertical piece 1121 and a first elastic horizontal piece 1122. One end of the first elastic vertical piece 1121 is connected to the first extension plate 11 and the other end of the first elastic vertical piece 1121 is connected to one end of the first elastic horizontal piece 1122. The other end of the first elastic horizontal piece 1122 is a free end and is positioned facing the first bracket 1 so that the first signal acquisition line 51 is confined between the first snap-fit ​​springs 112 and the first bracket 1. Specifically, by setting the first snap-fit ​​springs 112, the plurality of first signal acquisition lines 51 passing through the first slot 111 can be further organized so that they are threaded in the first snap-fit ​​springs 112, effectively preventing the first signal acquisition lines 51 from being pressed during the assembly of the power battery module 100.

[0031] In this embodiment of the utility model, such as Figure 2 as well as Figure 6As shown, the power battery module 100 also includes a positive power line 61 and a negative power line 62 for electrical connection with the cylindrical power battery 3. The second extension plate 12 is also provided with a positive power slot 123 and a negative power slot 124 corresponding to the positive power line 61 and the negative power line 62. The positive power slot 123 and the negative power slot 124 penetrate the second extension plate 12 along the thickness direction of the second extension plate 12. The positive power line 61 passes through the positive power slot 123 from the side away from the second bracket 2 and extends to the side of the second extension plate 12 facing the second bracket 2 to electrically connect to the external power interface 10. The negative power line 62 passes through the negative power slot 124 from the side away from the second bracket 2 and extends to the side of the second extension plate 12 facing the second bracket 2 to electrically connect to the external power interface 10. Specifically, the positive power cable 61 and the negative power cable 62 are used to electrically connect the battery pack to an external power source through the external power interface 10. The positive power slot 123 and the negative power slot 124 facilitate neater routing of the positive power cable 61 and the negative power cable 62, and prevent the positive power cable 61 and the negative power cable 62 from being pressed during the assembly of the power battery module 100.

[0032] Furthermore, such as Figures 1 to 2 as well as Figure 6 As shown, at least one first annular buckle 122 is also arranged on the surface of the second extension plate 12 facing the second bracket 2. The power battery module 100 also includes a first cable tie 71 corresponding to the first annular buckle 122. The first cable tie 71 passes through the first annular buckle 122 and binds and fixes the positive power line 61 and at least part of the second signal acquisition line 52. Specifically, since the diameter of the positive power line 61 is relatively large, in order to facilitate the confinement of the positive power line 61 on the second extension plate 12, the first annular buckle 122 is provided on the second extension plate 12, so as to facilitate the passing of the first cable tie 71 through the first annular buckle 122 to limit the positive power line 61 and the second signal acquisition line 52.

[0033] In this embodiment of the utility model, such as Figures 1 to 7As shown, the second end is connected to several third tabs 43 and several fourth tabs 44. The third tabs 43 and fourth tabs 44 extend to opposite sides of the second end. Several third tabs 43 are connected to several third signal acquisition lines 53, and several fourth tabs 44 are connected to several fourth signal acquisition lines 54. The second bracket 2 has a third extension plate 21 extending outwards corresponding to several third signal acquisition lines 53. The third extension plate 21 is positioned opposite to the first extension plate 11. Several third slots 211 are arranged along the length of the third extension plate 21. The third slots 211 penetrate the third extension plate 21 along its thickness direction. Several third signal acquisition lines 53 extend from several third slots 211 away from the third extension plate 21. One side of the first bracket 1 passes through the third slot 211 and extends to the side of the third extension plate 21 facing the first bracket 1 to electrically connect to the circuit board 9; the second bracket 2 also has a fourth extension plate 22 extending outward corresponding to multiple fourth signal acquisition lines 54. Multiple fourth slots 221 are arranged along the length of the fourth extension plate 22. The fourth slots 221 pass through the fourth extension plate 22 along the thickness direction of the fourth extension plate 22. The fourth extension plate 22 is arranged opposite to the second extension plate 12. Multiple fourth signal acquisition lines 54 pass through the fourth slots 221 from the side of the multiple fourth slots 221 away from the first bracket 1 and extend to the side of the fourth extension plate 22 facing the first bracket 1 to electrically connect to the circuit board 9. Specifically, the second end of the battery pack is connected to a plurality of second nickel plates 82. The structures of the plurality of second nickel plates 82 can be different to connect the required number of cylindrical power batteries 3. For example, some of the second nickel plates 82 can be elongated to electrically connect four cylindrical power batteries 3 arranged in sequence, so as to electrically connect the positive terminals of two of the cylindrical power batteries 3 to the negative terminals of the other two cylindrical power batteries 3. The second nickel plates 82 are mounted on the outward-facing side of the second bracket 2. The plurality of second nickel plates 82 are respectively connected to third tabs 43 and fourth tabs 44. The third tabs 43 and fourth tabs 44 extend to both sides of the battery pack respectively. The length direction of the third extension plate 21 and the fourth extension plate 22 is the same as the length direction of the second bracket 2. Each third tab 43 is connected to A third signal acquisition line 53 is provided, and a fourth signal acquisition line 54 is connected to each fourth tab 44. The third slot 211 and the fourth slot 221 are used to separate the third signal acquisition lines 53 and the fourth signal acquisition lines 54, avoiding a messy distribution of the third signal acquisition lines 53 and the fourth signal acquisition lines 54. In addition, the third signal acquisition lines 53 are led to the side of the third extension plate 21 facing the first bracket 1, and the fourth signal acquisition lines 54 are led to the side of the fourth extension plate 22 facing the first bracket 1, so as to avoid the third signal acquisition lines 53 and the fourth signal acquisition lines 54 being squeezed during the assembly process, effectively protecting the third signal acquisition lines 53 and the fourth signal acquisition lines 54. The design is very ingenious.

[0034] In this embodiment of the present invention, the third slot 211 extends from the third outer side of the third extension plate 21 away from the battery pack to the inner side of the third extension plate 21, and the fourth slot 221 extends from the fourth outer side of the fourth extension plate 22 away from the battery pack to the inner side of the fourth extension plate 22, thereby making it easier for the third signal acquisition line 53 and the fourth signal acquisition line 54 to be embedded in the third slot 211 and the fourth slot 221. Of course, in some other specific embodiments, the third slot 211 and the fourth slot 221 can also be slots or holes.

[0035] In this embodiment of the utility model, such as Figures 3 to 7 As shown, on the surface of the third extension plate 21 facing the first bracket 1, a plurality of second snap-fit ​​springs 212 for threading the third signal acquisition line 53 are arranged along the length direction. The second snap-fit ​​springs 212 are L-shaped and include a second elastic vertical piece 2121 and a second elastic horizontal piece 2122. One end of the second elastic vertical piece 2121 is connected to the third extension plate 21, and the other end of the second elastic vertical piece 2121 is connected to one end of the second elastic horizontal piece 2122. The other end of the second elastic horizontal piece 2122 is a free end and is positioned facing the second bracket 2 so that the third signal acquisition line 53 is confined between the second snap-fit ​​springs 2122 and the second bracket 2. On the surface of the fourth extension plate 22 facing the first bracket 1, a plurality of third snap-fit ​​springs 222 for threading the fourth signal acquisition line 54 are arranged along the length direction. The third snap-fit ​​springs 222 are L-shaped and include a third elastic vertical piece 2221 and a third elastic horizontal piece 2222. One end of the third elastic vertical piece 2221 is connected to the fourth extension plate 22, and the other end of the third elastic vertical piece 2221 is connected to one end of the third elastic horizontal piece 2222. The other end of the third elastic horizontal piece 2222 is a free end, and the other end of the third elastic horizontal piece 2222 is set towards the second bracket 2 so that the fourth signal acquisition line 54 is limited between the third snap-fit ​​spring piece 222 and the second bracket 2. Specifically, by setting the second snap-fit ​​spring piece 212, several third signal acquisition lines 53 passing through the third slot 211 can be further organized and passed through the second snap-fit ​​spring piece 212, effectively preventing the third signal acquisition lines 53 from being pressed during the assembly of the power battery module 100. Similarly, by setting the third snap-fit ​​spring piece 222, several fourth signal acquisition lines 54 passing through the fourth slot 221 can be further organized and passed through the third snap-fit ​​spring piece 222, effectively preventing the fourth signal acquisition lines 54 from being pressed during the assembly of the power battery module 100.

[0036] In this embodiment of the utility model, such as Figure 4 as well as Figure 6As shown, the extension direction of the fourth extension plate 22 is the first direction. The circuit board 9 is located on one side of the first bracket 1 and the second bracket 2 in a second direction perpendicular to the first direction. The second bracket 2 has a first length in the length direction of the fourth extension plate 22. The first length is greater than the length of the fourth extension plate 22 to form an avoidance gap 23 between the end of the second bracket 2 near the circuit board 9 and the fourth extension plate 22. A second annular buckle 24 is provided on the second bracket 2 at the position corresponding to the avoidance gap 23. The power battery module 100 also includes a second cable tie 72 provided corresponding to the second annular buckle 24. The second cable tie 72 passes through the second annular buckle 24 and binds and fixes multiple fourth signal acquisition lines 54. Specifically, by forming an avoidance gap 23 between the end of the second bracket 2 near the circuit board 9 and the fourth extension plate 22, the second cable tie 72 can be conveniently bundled, which is a clever design.

[0037] In this embodiment of the utility model, such as Figures 5 to 7 As shown, the circuit board 9 is provided with a signal line interface 91, and the second bracket 2 is also provided with a third annular buckle 25 corresponding to the signal line interface 91. The power battery module 100 also includes a third cable tie 73 corresponding to the third annular buckle 25. The third cable tie 73 passes through the third annular buckle 25 and binds and fixes the second signal acquisition line 52, the third signal acquisition line 53, and the fourth signal acquisition line 54. Specifically, the first signal acquisition line 51, the second signal acquisition line 52, the third signal acquisition line 53, and the fourth signal acquisition line 54 are all connected to the signal line interface 91. After the second signal acquisition line 52, the third signal acquisition line 53, and the fourth signal acquisition line 54 converge, they are electrically connected to the signal line interface 91 from above. Therefore, a third annular buckle 25 is provided at the corresponding signal line interface 91, so as to bind and fix the second signal acquisition line 52, the third signal acquisition line 53, and the fourth signal acquisition line 54, ensuring that the wiring of the second signal acquisition line 52, the third signal acquisition line 53, and the fourth signal acquisition line 54 is neat and tidy. The design is ingenious.

[0038] In this embodiment of the utility model, such as Figures 8 to 9As shown, the negative power line 62 and the positive power line 61 are connected via a wire clamp 103 on the circuit board 9. The wire clamp 103 is also equipped with a screw 104, which is connected to the top cover 102 of the power battery module 100. Specifically, to supply power to the circuit board 9, the negative power line 62 and the positive power line 61 pass over the circuit board 9. The power battery module 100 also includes a housing 101 and a top cover 102 covering the housing 101. The battery pack, the first bracket 1, and the second bracket 2 are installed in the housing 101, with the circuit board 9 facing the top cover 102. After the positive power line 61 and the negative power line 62 are clamped by the wire clamp 103, the wire clamp 103 is fixed to the top cover 102 by the screw 104, thereby effectively limiting the positive power line 61 and the negative power line 62 and preventing them from being pressed during the assembly of the power battery module 100. This is a clever design.

[0039] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A power battery module, characterized in that: The device includes a first bracket, a second bracket, and a plurality of cylindrical power batteries sandwiched between the first bracket and the second bracket. The plurality of cylindrical power batteries form a battery pack. The battery pack has a first end for cooperating with the first bracket and a second end for cooperating with the second bracket. The first end is connected to a plurality of first tabs and a plurality of second tabs. The first tabs and the second tabs extend to opposite sides of the first end, respectively. The plurality of first tabs are connected to a plurality of first signal acquisition lines, and the plurality of second tabs are connected to a plurality of second signal acquisition lines. The first bracket has a first extension plate extending outward from a plurality of first signal acquisition lines. The first extension plate has a plurality of first slots arranged along its length direction. The first slots penetrate the first extension plate along its thickness direction. The plurality of first signal acquisition lines pass through the first slots from the side away from the second bracket and extend to the side of the first extension plate facing the second bracket to electrically connect to the circuit board. The first bracket also has a second extension plate extending outward from a plurality of second signal acquisition lines. The second extension plate has a plurality of second slots arranged along its length direction. The second slots penetrate the second extension plate along its thickness direction. The plurality of second signal acquisition lines pass through the second slots from the side away from the second bracket and extend to the side of the second extension plate facing the second bracket to electrically connect to the circuit board.

2. The power battery module as described in claim 1, characterized in that: The first slot extends from the first outer side of the first extension plate away from the battery pack to the inner side of the first extension plate, and the second slot extends from the second outer side of the second extension plate away from the battery pack to the inner side of the second extension plate.

3. The power battery module as described in claim 1, characterized in that: Along the length direction, a plurality of first snap-fit ​​springs for threading the first signal acquisition line are arranged on the surface of the first extension plate facing the second bracket. The first snap-fit ​​springs are L-shaped and include a first elastic vertical piece and a first elastic horizontal piece. One end of the first elastic vertical piece is connected to the first extension plate and the other end of the first elastic vertical piece is connected to one end of the first elastic horizontal piece. The other end of the first elastic horizontal piece is a free end and is positioned facing the first bracket so that the first signal acquisition line is limited between the first snap-fit ​​spring and the first bracket.

4. The power battery module as described in claim 1, characterized in that: It also includes a positive power line and a negative power line for electrical connection with the cylindrical power battery. The second extension plate is also provided with a positive power slot and a negative power slot corresponding to the positive power line and the negative power line. The positive power slot and the negative power slot penetrate the second extension plate along the thickness direction of the second extension plate. The positive power line passes through the positive power slot from the side away from the second bracket and extends to the side of the second extension plate facing the second bracket to electrically connect to an external power interface. The negative power line passes through the negative power slot from the side away from the second bracket and extends to the side of the second extension plate facing the second bracket to electrically connect to the external power interface.

5. The power battery module as described in claim 4, characterized in that: The second extension plate has at least one first annular buckle arranged on its surface facing the second bracket. The power battery module also includes a first cable tie corresponding to the first annular buckle. The first cable tie passes through the first annular buckle and secures the positive power line and at least part of the second signal acquisition line.

6. The power battery module as described in claim 1, characterized in that: The second end is connected to a plurality of third electrodes and a plurality of fourth electrodes. The third electrodes and the fourth electrodes extend to opposite sides of the second end respectively. The plurality of third electrodes are connected to a plurality of third signal acquisition lines, and the plurality of fourth electrodes are connected to a plurality of fourth signal acquisition lines. The second bracket has a third extension plate extending outward from a plurality of the third signal acquisition lines. The third extension plate is disposed opposite to the first extension plate. The third extension plate has a plurality of third slots arranged along its length direction. The third slots penetrate the third extension plate along its thickness direction. The plurality of third signal acquisition lines pass through the third slots from the side away from the first bracket and extend to the side of the third extension plate facing the first bracket to electrically connect to the circuit board. The second bracket also has a fourth extension plate extending outward from a plurality of fourth signal acquisition lines. The fourth extension plate has a plurality of fourth slots arranged along its length direction. The fourth slots penetrate the fourth extension plate along its thickness direction. The fourth extension plate is disposed opposite to the second extension plate. The plurality of fourth signal acquisition lines pass through the fourth slots from the side away from the first bracket and extend to the side of the fourth extension plate facing the first bracket to electrically connect to the circuit board.

7. The power battery module as described in claim 6, characterized in that: The third extension plate has several second snap-fit ​​springs arranged along its length on its surface facing the first bracket for threading the third signal acquisition line. Each second snap-fit ​​spring is L-shaped and includes a second elastic vertical piece and a second elastic horizontal piece. One end of the second elastic vertical piece is connected to the third extension plate, and the other end is connected to one end of the second elastic horizontal piece. The other end of the second elastic horizontal piece is a free end and is positioned facing the second bracket so that the third signal acquisition line is limited between the second snap-fit ​​spring and the second bracket. Similarly, the fourth extension plate has several third snap-fit ​​springs arranged along its length on its surface facing the first bracket for threading the fourth signal acquisition line. Each third snap-fit ​​spring is L-shaped and includes a third elastic vertical piece and a third elastic horizontal piece. One end of the third elastic vertical piece is connected to the fourth extension plate, and the other end is connected to one end of the third elastic horizontal piece. The other end of the third elastic horizontal piece is a free end and is positioned facing the second bracket so that the fourth signal acquisition line is limited between the third snap-fit ​​spring and the second bracket.

8. The power battery module as described in claim 7, characterized in that: The fourth extension plate extends in a first direction. The circuit board is disposed on one side of the first bracket and the second bracket in a second direction perpendicular to the first direction. The second bracket has a first length in the length direction of the fourth extension plate. The first length is greater than the length of the fourth extension plate to form a clearance gap between the second bracket and the fourth extension plate at the end of the second bracket near the circuit board. A second annular buckle is provided on the second bracket corresponding to the clearance gap. The power battery module also includes a second cable tie corresponding to the second annular buckle. The second cable tie passes through the second annular buckle and binds and fixes multiple fourth signal acquisition lines.

9. The power battery module as described in claim 7, characterized in that: The circuit board is provided with a signal line interface, and the second bracket is also provided with a third annular buckle corresponding to the signal line interface. The power battery module also includes a third cable tie corresponding to the second annular buckle. The third cable tie is inserted into the third annular buckle and used to tie and fix the second signal acquisition line, the third signal acquisition line and the fourth signal acquisition line.

10. The power battery module as described in claim 4, characterized in that: The negative power line and the positive power line are connected by a wire clamp on the part of the circuit board. The wire clamp is also provided with a screw, which is connected to the top cover of the power battery module.

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