Battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack, which comprises a shell assembly, a battery pack, a battery pack cover and a battery pack cover, 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 parallel to each other, the projections of the first circuit board and the second circuit board in the length direction of the shell assembly are overlapped, 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 electrical function module comprises a main electrical module and an auxiliary function module, the main electrical module comprises an air switch and a wiring terminal, one end of the air switch penetrates through the shell cover and is exposed, the other end of the air switch is detachably connected to the first circuit board, and the air switch and the wiring terminal can be electrically connected with the battery module through the first circuit board; 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. The utility model has the advantages of low manufacturing cost, high assembly efficiency and compact structure.

Description

Technical Field

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

[0002] In existing battery pack designs, circuit breakers and terminals are typically mounted on the end caps of the battery pack and connected to the PCB board and the battery module terminals via wires. This layout requires wiring for multiple components, increasing production costs and assembly time, while also complicating maintenance and troubleshooting. Furthermore, excessive internal wiring can negatively impact the battery pack's heat dissipation, potentially posing safety hazards. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a battery pack with low manufacturing cost, high assembly efficiency and compact structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is a battery pack, comprising:

[0005] A housing assembly, the housing assembly including a housing and a cover, the cover being detachably disposed on the housing, and the housing having an accommodating cavity;

[0006] A battery module, wherein the battery module is disposed within the accommodating cavity and has electrode connectors;

[0007] A circuit board assembly, comprising a first circuit board and a second circuit board disposed between the battery module and the housing cover and parallel to each other, wherein the projections of the first circuit board and the second circuit board along the length direction of the housing assembly overlap, wherein the first circuit board is detachably connected to the electrode connector, and the second circuit board is electrically connected to the first circuit board.

[0008] An electrical function module is provided, comprising a main electrical module and an auxiliary electrical module. The main electrical module includes an air switch and a terminal block. One end of the air switch and the terminal block passes through the housing and is exposed, while the other end is detachably connected to the first circuit board and can be electrically connected to the battery module through the first circuit board. The auxiliary electrical module is located on the second circuit board and can be electrically connected to the battery module through the second circuit board.

[0009] Furthermore, the second circuit board is disposed between the first circuit board and the housing cover, and is located on the side of the first circuit board away from the main electrical module, and the size of the second circuit board is smaller than the size of the first circuit board.

[0010] Furthermore, the circuit board assembly also includes a metal mounting bracket disposed between the second circuit board and the housing cover. One side of the metal mounting bracket is detachably connected to the housing cover, and the other side is detachably connected to the first circuit board. The second circuit board is detachably disposed on the metal mounting bracket.

[0011] Furthermore, the metal mounting bracket is provided with a first groove recessed in a direction away from the first circuit board, the second circuit board is detachably disposed in the first groove by fasteners, and the bottom wall of the first groove is provided with at least one first mounting hole, and the bottom wall of the first groove is provided with multiple first notches for the auxiliary function module to pass through.

[0012] Furthermore, the first groove has a first mounting edge on its side, which is parallel to the first circuit board and has a height difference with the bottom wall of the first groove. The first mounting edge can be detachably connected to the first circuit board by fasteners. The bottom wall of the first groove has at least one second mounting hole, and the cover has a first fixing seat corresponding to the second mounting hole. The first fixing seat and the second mounting hole can be connected by fasteners.

[0013] Furthermore, the metal mounting bracket is also provided with a second groove arranged side by side with the first groove. The second groove has a concave direction opposite to that of the first groove, and a heat-conducting element is provided between the outer wall of the second groove and the first circuit board.

[0014] Furthermore, the second groove has a second mounting edge on its side, which is parallel to the cover and has a height difference with the bottom wall of the second groove. The cover has a second fixing seat corresponding to the second mounting edge, and the second fixing seat can be detachably connected to the second mounting edge by fasteners. The bottom wall of the second groove has at least one third mounting hole, which can be detachably connected to the first circuit board by fasteners. The second groove also has multiple second notches that penetrate through itself.

[0015] Furthermore, the first circuit board is provided with a positive electrode mounting base and a negative electrode mounting base, and the electrode connector includes a positive electrode connecting piece that is detachably connected to the positive electrode mounting base by fasteners, and a negative electrode connecting piece that is detachably connected to the negative electrode mounting base by fasteners.

[0016] Furthermore, the first circuit board is provided with two sets of first electrical terminals that pass through it. The terminals include a positive terminal and a negative terminal. The positive terminal includes a first connector, a second connector, and a positive conductive element. One end of the positive conductive element is connected to the first connector, and the other end is connected to the second connector. It also has a first fixing part that is detachably connected to one set of the first electrical terminals. The negative terminal includes a third connector, a fourth connector, and a negative conductive element. One end of the negative conductive element is connected to the third connector, and the other end is connected to the fourth connector. It also has a second fixing part that is detachably connected to the other set of the first electrical terminals.

[0017] Furthermore, the first circuit board is provided with a second electrical terminal that passes through it, and the air switch is detachably connected to the second electrical terminal by fasteners.

[0018] Furthermore, the cover is provided with a first interface through which the air switch passes. The first interface has a first mounting part and a second mounting part that extend vertically outward along the outer wall of the cover. A protective cover is detachably fitted onto the first interface. One end of the protective cover is rotatably connected to the first mounting part, and the other end is snapped to the second mounting part.

[0019] Furthermore, the auxiliary function module includes a wireless communication connector that is detachably plugged into the second circuit board. The cover is provided with a second interface through which the wireless communication connector passes. A first shielding member is detachably covered on the second interface, and a first sealing member is provided between the first shielding member and the second interface. The first sealing member has an elastic deformation and can be compressed and elastically deformed when the first shielding member is fixed on the second interface.

[0020] Furthermore, the second interface includes a third groove, the first shield is embedded in the third groove and has a fourth groove arranged along its own circumference, the first seal is disposed between the fourth groove and the third groove and abuts against the inner walls of the fourth groove and the third groove respectively, and the height of the first seal after elastic deformation under pressure is 60% of the height of the third groove.

[0021] Furthermore, the auxiliary function module also includes an Ethernet connector that is detachably plugged into the second circuit board. The cover is provided with a third interface through which the Ethernet connector passes. A second shield is detachably installed on the third interface. The third interface includes a fifth groove and a sixth groove that communicate with the outside respectively. The fifth groove surrounds the sixth groove, and there is a blocking part between the fifth groove and the sixth groove. The second shield extends into the fifth groove.

[0022] Furthermore, it includes an indicator light module disposed within the accommodating cavity. The indicator light module includes a lamp holder and an indicator light. The lamp holder is detachably connected to the housing cover. One end of the indicator light passes through the lamp holder, and the other end passes through the housing cover and is exposed. The housing cover is provided with a fourth interface for the indicator light to pass through, and a second sealing element is provided between the fourth interface and the indicator light. The second sealing element has an elastic deformation and can be elastically deformed under pressure when the lamp holder is fixed on the housing cover.

[0023] Furthermore, the cover is made of plastic, and the side of the cover facing the accommodating cavity is detachably provided with a metal reinforcing rib, which extends along the length of the cover.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] 1. In this utility model, a first circuit board and a second circuit board, parallel to each other, are arranged between the battery module and the casing. The projections of the first circuit board and the second circuit board along the length of the casing overlap, and the first circuit board is detachably connected to the electrode connector. The second circuit board is electrically connected to the first circuit board. Simultaneously, one end of the main electrical module passes through the casing and is exposed, while the other end is detachably connected to the first circuit board and can be electrically connected to the battery module through the first circuit board. The auxiliary function module is located on the second circuit board and can be electrically connected to the battery module through the second circuit board. This design, by directly connecting the main electrical module to the first circuit board, saves additional wiring requirements, significantly reducing production costs and assembly complexity. Furthermore, the coordinated design of the first and second circuit boards optimizes the internal space utilization of the battery pack, reduces the width dimension of the casing, and makes the overall structure more compact, achieving miniaturization.

[0026] 2. In this utility model, the second circuit board is disposed between the first circuit board and the housing cover, and is located on the side of the first circuit board away from the main electrical module, and the size of the second circuit board is smaller than the size of the first circuit board. Through differentiated size design and partitioned layout, efficient utilization of the internal space of the battery pack is achieved, while avoiding mutual interference between the main electrical module and the auxiliary functional module.

[0027] 3. In this utility model, the circuit board assembly further includes a metal mounting bracket disposed between the second circuit board and the housing cover. One side of the metal mounting bracket is detachably connected to the housing cover, and the other side is detachably connected to the first circuit board. The second circuit board is detachably mounted on the metal mounting bracket. This design, through the heat conduction and structural support of the metal mounting bracket, not only improves the heat dissipation efficiency of the first and second circuit boards but also enhances the connection reliability and overall rigidity, thereby significantly improving the vibration resistance of the battery pack. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a battery pack according to the present invention.

[0029] Figure 2 This is an exploded view of a battery pack according to the present invention.

[0030] Figure 3 for Figure 2 A structural diagram from another perspective.

[0031] Figure 4 This is a structural schematic diagram of a battery pack according to this utility model from another perspective.

[0032] Figure 5 for Figure 5 Sectional view at point AA.

[0033] Figure 6 for Figure 5 Sectional view at point BB.

[0034] Figure 7 This is a partial structural diagram of a battery pack according to the present invention.

[0035] Figure 8 for Figure 7 Sectional view at point CC.

[0036] Figure 9 for Figure 7 Sectional view at point DD.

[0037] Figure 10 This is an exploded view of a partial structure of a battery pack according to the present invention.

[0038] Figure 11 for Figure 10 A structural diagram from another perspective.

[0039] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 100, housing assembly; 110, housing; 111, receiving cavity; 120, housing cover; 121, first fixing seat; 122, second fixing seat; 123, metal reinforcing rib; 130, first interface; 131, first mounting part; 132, second mounting part; 140, second interface; 141, third groove; 150, third interface; 151, fifth groove; 152. 153. Sixth recess; 160. Barrier part; 200. Fourth interface; 210. Battery module; 211. Electrode connector; 212. Positive electrode connector; 213. Negative electrode connector; 300. Circuit board assembly; 311. First circuit board; 312. Positive electrode mounting base; 313. Negative electrode mounting base; 314. First electrical terminal; 320. Second electrical terminal; 330. Second circuit board; 331. Metal mounting bracket; 332. First recess; 333. 333, First notch; 334, First mounting edge; 335, Second mounting hole; 336, Second groove; 337, Second mounting edge; 338, Third mounting hole; 339, Second notch; 400, Main electrical module; 410, Air switch; 420, Terminal block; 421, Positive terminal block; 421a, First connector; 421b, Second connector; 421c, Positive conductive element; 421d, First fixing part; 422, Negative terminal block Terminal; 422a, third connector; 422b, fourth connector; 422c, negative conductive element; 422d, second fixing part; 500, auxiliary function module; 510, wireless communication connector; 520, Ethernet connector; 600, protective cover; 700, first shield; 701, fourth groove; 710, second shield; 800, first seal; 810, second seal; 900, indicator light module; 910, lamp holder; 920, indicator light. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] like Figures 1 to 11 As shown, in this embodiment, a battery pack includes:

[0046] The housing assembly 100 includes a housing 110 and a cover 120, the cover 120 being detachably disposed on the housing 110, and the housing 110 having a receiving cavity 111;

[0047] The battery module 200 is disposed in the accommodating cavity 111 and has an electrode connector 210;

[0048] The circuit board assembly 300 includes a first circuit board 310 and a second circuit board 320 disposed between the battery module 200 and the housing cover 120 and parallel to each other. The projections of the first circuit board 310 and the second circuit board 320 along the length of the housing overlap. The first circuit board 310 is detachably connected to the electrode connector 210, and the second circuit board 320 is electrically connected to the first circuit board 310.

[0049] The electrical functional module includes a main electrical module 400 and an auxiliary functional module 500. The main electrical module 400 includes an air switch 410 and a terminal block 420. One end of the air switch 410 and the terminal block 420 passes through the housing cover 120 and is exposed, while the other end is detachably connected to the first circuit board 310 and can be electrically connected to the battery module 200 through the first circuit board 310. The auxiliary functional module 500 is located on the second circuit board 320 and can be electrically connected to the battery module 200 through the second circuit board 320. This design, by directly connecting the main electrical module 400 to the first circuit board 310, saves on additional wiring requirements, significantly reducing production costs and assembly complexity. Simultaneously, the coordinated design of the first circuit board 310 and the second circuit board 320 optimizes the utilization of the internal space of the battery pack, reduces the width dimension of the housing, and makes the overall structure more compact, achieving a miniaturized design.

[0050] Specifically, such as Figures 1 to 11 As shown, in this embodiment, the battery pack's outer casing assembly 100 is rectangular, comprising a housing 110 and a cover 120. The housing 110 is a hollow structure with an opening on one side and a rectangular accommodating cavity 111 for housing the battery module 200, circuit board assembly 300, and electrical functional modules. The cover 120 is rectangular and detachably mounted on the housing 110 using fasteners, sealing the opening of the housing 110 to prevent external dust, moisture, and other contaminants from entering the battery pack, thereby protecting the internal components from environmental factors. This design effectively improves the battery pack's lifespan and reliability, and the detachable design of the cover 120 makes maintenance or component replacement more convenient.

[0051] In this embodiment, the battery module 200 is detachably disposed within the accommodating cavity 111. An electrode connector 210 is provided on the side near the first circuit board 310. The electrode connector 210 includes a positive electrode connector 211 and a negative electrode connector 212 extending horizontally toward the first circuit board 310, respectively, and both are detachably connected to the first circuit board 310 via fasteners. This design not only improves the stability and reliability of current transmission but also reduces additional wiring, greatly simplifies the assembly and maintenance process, reduces production costs, and enhances safety. Furthermore, the direct connection of the electrode connector 210 to the first circuit board 310 means that the power of the battery module 200 can be directly distributed and managed through the first circuit board 310 without the need for additional wiring.

[0052] In this embodiment, the circuit board assembly 300 includes a first circuit board 310 and a second circuit board 320 disposed between the battery module 200 and the housing cover 120 and parallel to each other. The first circuit board 310 is disposed near the battery module 200 and is detachably connected to the electrode connector 210. The second circuit board 320 is disposed near the housing cover 120 and is electrically connected to the first circuit board 310. The cooperative design of the first circuit board 310 and the second circuit board 320 not only meets the installation requirements of multiple sub-modules of the electrical functional module, but also makes the internal structure of the entire battery pack more compact and reasonable, reducing the width dimension of the housing and facilitating miniaturization and lightweight design.

[0053] In this embodiment, the first circuit board 310 and the second circuit board 320 are rectangular and vertically disposed within the accommodating cavity 111. The second circuit board 320 is located between the first circuit board 310 and the cover 120, on the side of the first circuit board 310 away from the main electrical module 400, and its size is smaller than that of the first circuit board 310. This design, by employing differentiated dimensions, can fully utilize the limited space within the battery pack, making the overall structure more compact and contributing to the miniaturization and lightweight design of the battery pack. Furthermore, it allows for multi-level functional partitioning within the same accommodating cavity 111, reducing interference between electronic components, improving system stability and reliability, and enabling the individual replacement or upgrading of components on one circuit board without affecting the function of another circuit board.

[0054] In this embodiment, the first circuit board 310 has two sets of first electrical terminals 313 and one set of second electrical terminals 314 extending through it on the side away from the second circuit board 320. The first electrical terminals 313 are used for connection to the wiring terminal 420, and the second electrical terminals 314 are used for connection to the air switch 410. This design allows the wiring terminal 420 and the air switch 410 to be directly connected to the first circuit board 310, saving on additional wiring requirements. This not only reduces production costs and improves maintenance convenience but also increases current transmission efficiency.

[0055] Preferably, in this embodiment, there are two sets of first electrical terminals 313, one set for connecting to the positive terminal 421 and the other set for connecting to the negative terminal 422, and each set of first electrical terminals 313 consists of two terminals arranged vertically in a straight line.

[0056] Preferably, in this embodiment, the second electrical terminal 314 is disposed between the two sets of first electrical terminals 313, and the second electrical terminal 314 is composed of four terminals arranged in a matrix.

[0057] In this embodiment, the top of the first circuit board 310 is provided with a positive electrode mounting base 311 and a negative electrode mounting base 312. The positive electrode connecting piece 211 is detachably connected to the positive electrode mounting base 311 by fasteners, and the negative electrode connecting piece 212 is detachably connected to the negative electrode mounting base 312 by fasteners. This design can effectively reduce contact resistance and avoid current transmission problems caused by looseness or poor contact, thereby ensuring efficient and stable power transmission.

[0058] In this embodiment, the second circuit board 320 is provided with a first plug-in hole for mounting the wireless communication connector 510 and a second plug-in hole for mounting the Ethernet connector 520. The first plug-in hole is located in the middle of the second circuit board 320, and the second plug-in hole is located below the first plug-in hole. By adopting a standardized plug-in hole design, the wireless communication connector 510 and the Ethernet connector 520 can be quickly and easily installed and removed without complex wiring, greatly improving production efficiency and maintenance convenience.

[0059] In this embodiment, the circuit board assembly 300 further includes a metal mounting bracket 330 disposed between the second circuit board 320 and the housing cover 120. The metal mounting bracket 330 is vertically arranged and parallel to the first circuit board 310, the second circuit board 320, and the housing cover 120, respectively. One side of the metal mounting bracket 330 is detachably connected to the housing cover 120, and the other side is detachably connected to the first circuit board 310. The second circuit board 320 is detachably mounted on the metal mounting bracket 330. The introduction of the metal mounting bracket 330 effectively transfers the heat generated by the first circuit board 310 and the second circuit board 320 to the housing cover 120 or other heat dissipation structures, preventing localized overheating and significantly improving the heat dissipation efficiency of the first and second circuit boards 310 and 320. Simultaneously, the metal mounting bracket 330 not only provides robust physical support for the first and second circuit boards 310 and 320, reducing circuit board displacement or loosening caused by vibration or other external forces, thus improving the reliability and safety of current transmission, but also enhances the structural strength and rigidity of the entire battery pack. In addition, the detachable design of the metal mounting bracket 330 improves the ease of disassembly and maintenance.

[0060] In this embodiment, the metal mounting bracket 330 has a first groove 331 recessed in a direction away from the first circuit board 310. The second circuit board 320 is detachably disposed in the first groove 331 by fasteners, and the bottom wall of the first groove 331 has at least one through-hole 332. This design not only provides a stable physical support for the second circuit board 320, but also reduces the displacement or loosening of the circuit board due to external vibration or impact.

[0061] Preferably, four first mounting holes 332 are provided in a matrix arrangement, and each first mounting hole 332 is riveted with a threaded post. Screws can pass through the second circuit board 320 and be screwed into the threaded post to connect the metal mounting bracket 330 and the second circuit board 320. This design not only ensures the stability of the connection but also facilitates disassembly and reinstallation.

[0062] Preferably, the first groove 331 is rectangular, and the size of the first groove 331 is adapted to the size of the second circuit board 320. This design provides precise positioning and fixation for the second circuit board 320, preventing it from bending or deforming due to uneven force during use, thereby protecting the electronic components on the circuit board from damage.

[0063] In this embodiment, the bottom wall of the first groove 331 is provided with multiple first notches 333 that penetrate through it for the auxiliary function module 500 to pass through. Preferably, the first notches 333 are rectangular, and there are two of them arranged vertically. The two first notches 333 are of different sizes, slightly larger than the wireless communication connector 510 and the Ethernet connector 520, respectively, to allow the wireless communication connector 510 and the Ethernet connector 520 to pass through. This design ensures that the wireless communication connector 510 and the Ethernet connector 520 can pass through smoothly, while avoiding loosening due to being too large or installation difficulties due to being too small.

[0064] In this embodiment, a first mounting edge 334 is provided on the side of the first groove 331 away from the second groove 336. The first mounting edge 334 is parallel to the first circuit board 310 and has a height difference with the bottom wall of the first groove 331. The first mounting edge 334 can be detachably connected to the first circuit board 310 by fasteners. This design makes the connection between the first circuit board 310 and the metal mounting bracket 330 simpler and faster, and the operation can be completed without complicated tools or steps.

[0065] Preferably, the first mounting edge 334 is U-shaped, extending horizontally outward from the top side of the first groove 331, and forming two symmetrically arranged mounting portions. Threaded posts are riveted to the mounting portions, and screws can pass through the first circuit board 310 and be screwed into the threaded posts to connect the metal mounting bracket 330 to the first circuit board 310. This design not only ensures the stability of the connection but also facilitates disassembly and reinstallation.

[0066] In this embodiment, at least one second mounting hole 335 is provided on the bottom wall of the first groove 331, and a first fixing seat 121 corresponding to the second mounting hole 335 is provided on the cover 120, and the first fixing seat 121 and the second mounting hole 335 can be connected by fasteners. This design can achieve a firm connection between the metal mounting bracket 330 and the cover 120, effectively preventing loosening or displacement caused by external vibration, impact or other external forces, and significantly enhancing the rigidity and impact resistance of the entire battery pack internal structure.

[0067] Preferably, there are four second mounting holes 335 arranged in a matrix, while the first fixing seat 121 is cylindrical with internal threads, and has four of them corresponding one-to-one with the second mounting holes 335. Screws can pass through the through holes and be screwed into the second fixing seat 122. This design makes the connection between the metal mounting bracket 330 and the cover 120 simpler and faster, and the operation can be completed without complicated tools or steps.

[0068] In this embodiment, the metal mounting bracket 330 also has a second groove 336 arranged parallel to the first groove 331. The second groove 336 is rectangular and recessed in a direction away from the cover 120, opposite to the recessed direction of the first groove 331. A heat-conducting element (not shown in the figure) is provided between the outer wall of the second groove 336 and the first circuit board 310. Preferably, the heat-conducting element is thermally conductive silicone or a thermal pad. This design can quickly conduct the heat generated by the first circuit board 310 to the metal mounting bracket 330, and then transfer it to the external environment through the metal mounting bracket 330, further improving the heat conduction efficiency and avoiding the occurrence of local overheating.

[0069] In this embodiment, a second mounting edge 337 is provided on the side of the second groove 336 away from the first groove 331. The second mounting edge 337 is parallel to the cover 120 and has a height difference with the bottom wall of the second groove 336. The cover 120 is provided with a second fixing seat 122 corresponding to the second mounting edge 337, and the second fixing seat 122 can be detachably connected to the second mounting edge 337 by fasteners. This design makes the connection between the metal mounting bracket 330 and the cover 120 more reliable and stable, and makes the force on the metal mounting bracket 330 more even.

[0070] Preferably, the second mounting edge 337 is strip-shaped, vertically arranged, and has two through holes with upper and lower walls extending through it. The second fixing seat 122 is cylindrical, with internal threads, and has two such seats, each corresponding to one of the through holes. Screws can pass through the through holes and be screwed into the second fixing seat 122. This design makes the connection between the other side of the metal mounting bracket 330 and the cover 120 simpler and faster, ensuring not only the stability of the connection but also facilitating disassembly and reinstallation.

[0071] In this embodiment, at least one third mounting hole 338 is provided on the bottom wall of the second groove 336. The third mounting hole 338 can be detachably connected to the first circuit board 310 via fasteners. This design makes the connection between the metal mounting bracket 330 and the first circuit board 310 more reliable and stable, and makes the force on the left and right sides of the metal mounting bracket 330 more even.

[0072] Preferably, four third mounting holes 338 are provided, and each third mounting hole 338 is riveted with a threaded post. Screws can pass through the first circuit board 310 and be screwed into the threaded post to connect the metal mounting bracket 330 to the first circuit board 310. This design not only ensures the stability of the connection, but also facilitates disassembly and reinstallation.

[0073] In this embodiment, the second groove 336 is provided with a plurality of second notches 339 that penetrate through itself. Each second notch 339 has a different shape and is used for the components on the first circuit board 310 and the positive electrode mounting base 311 or negative electrode mounting base 312 to pass through, thereby avoiding interference with the metal mounting bracket 330.

[0074] In this embodiment, the electrical function module includes a main electrical module 400 and an auxiliary function module 500. The main electrical module 400 includes an air switch 410 and a terminal block 420. One end of the air switch 410 and the terminal block 420 passes through the housing cover 120 and is exposed, while the other end is detachably connected to the first circuit board 310 and can be electrically connected to the battery module 200 through the first circuit board 310. The auxiliary function module 500 is disposed on the second circuit board 320 and includes a wireless communication connector 510 and an Ethernet connector 520, both of which can be electrically connected to the battery module 200 through the second circuit board 320. This design, by separating the high-power main electrical module 400 from the low-heat auxiliary function module 500, helps to achieve uniform heat distribution and effective heat dissipation. The detachable direct connection of the other end of the air switch 410 and the terminal block 420 to the first circuit board 310 not only reduces the need for additional wiring and lowers production costs, but also improves the convenience of disassembly, assembly, and maintenance, and ensures the reliability of the electrical connection.

[0075] In this embodiment, the air switch 410 is a standard component, which is detachably connected to the second electrical terminal 314 via fasteners. This design allows the air switch 410 to be quickly disassembled and replaced when it fails, without the need to rewire or adjust the entire circuit board, significantly reducing maintenance costs and time consumption.

[0076] In this embodiment, the terminal block 420 includes a positive terminal block 421 and a negative terminal block 422. The positive terminal block 421 includes a first connector 421a, a second connector 421b, and a positive conductive element 421c. One end of the positive conductive element 421c is connected to the first connector 421a, and the other end is connected to the second connector 421b. It also has a first fixing portion 421d that is detachably connected to a set of first electrical terminals 313 via fasteners. The negative terminal block 422 includes a third connector 422a, a fourth connector 422b, and a negative conductive element 422c. One end of the negative conductive element 422c is connected to the third connector 422a, and the other end is connected to the fourth connector 422b. It also has a second fixing portion 422d that is detachably connected to another set of first electrical terminals 313 via fasteners. This design avoids the risk of short circuits between the positive and negative terminals, improving the safety and stability of the system. On the other hand, it effectively prevents loosening or detachment caused by vibration or other external forces, reducing the risk of poor contact and ensuring the stability and reliability of the electrical connection.

[0077] Preferably, in this embodiment, the first connector 421a and the second connector 421b are arranged vertically, as are the third connector 422a and the fourth connector 422b, and are respectively mounted on the cover 120. Both the positive conductive element 421c and the negative conductive element 422c are cylindrical conductive elements bent into a U-shape. The first fixing part 421d and the second fixing part 422d are respectively located at the bends, and both the first fixing part 421d and the second fixing part 422d have through holes. Fasteners can pass through the through holes and the first electrical terminal 313 in sequence to fix the terminal 420 to the first circuit board 310. This design makes full use of the limited space, achieving a compact design, improving space utilization, and providing more installation positions for other components.

[0078] In this embodiment, the auxiliary function module 500 includes a wireless communication connector 510 detachably plugged into a first plug-in hole and an Ethernet connector 520 detachably plugged into a second plug-in hole. The wireless communication connector 510 is a standard component, which allows users to select different wireless communication protocols, such as Wi-Fi and Bluetooth, according to their needs. The Ethernet connector 520 is a standardized RJ45 interface that supports gigabit or 10-gigabit network transmission rates.

[0079] In this embodiment, the cover 120 is made of plastic, and a metal reinforcing rib 123 is detachably provided on the side of the cover 120 facing the receiving cavity 111. The metal reinforcing rib 123 extends along the length of the cover 120. By using a plastic cover 120 and locally adding metal reinforcing ribs 123, the structural strength is improved while reducing the overall weight. Compared to an all-metal cover 120, this method maintains a lighter weight and reduces material costs, achieving a good balance between performance and economy.

[0080] In this embodiment, the metal reinforcing rib 123 is provided with a plurality of connecting holes arranged in a straight line, and the cover 120 is provided with a plurality of connecting seats corresponding one-to-one with the connecting holes. The connecting seats and connecting holes can be connected by fasteners to fix the metal reinforcing rib 123 to the cover 120. This design ensures the convenience of disassembling, assembling and maintaining the metal reinforcing rib 123.

[0081] In this embodiment, the metal reinforcing rib 123 is also provided with an avoidance notch, which is connected to one end of the first interface 130, ensuring that the air switch 410 can smoothly pass through the cover 120.

[0082] In this embodiment, the cover 120 is provided with a first interface 130 through which the air switch 410 passes. The first interface 130 has a first mounting portion 131 and a second mounting portion 132 extending vertically outward along the outer wall of the cover 120. The first mounting portion 131 and the second mounting portion 132 are arranged opposite to each other, and a protective cover 600 is detachably covered on the first interface 130. One end of the protective cover 600 is rotatably connected to the first mounting portion 131, and the other end is snap-fitted to the second mounting portion 132. This design, by rotatably integrating the protective cover 600 onto the first interface 130, reduces the need for additional fasteners compared to the traditional screw fixing method, which not only reduces the complexity of assembly but also saves production and maintenance time and costs.

[0083] In this embodiment, the first interface 130 has a rectangular notch penetrating the housing 120 for the operating handle of the air switch 410 to extend out. This design allows the user to easily access the operating handle of the air switch 410 to perform necessary operations, such as opening, closing, or adjustment.

[0084] In this embodiment, the first mounting part 131 includes a first limiting edge, a second limiting edge, and a third limiting edge. The first limiting edge is arranged opposite to the second mounting part 132, and the second and third limiting edges are arranged opposite to each other and perpendicularly connected to the first limiting edge. The first, second, and third limiting edges all extend away from the shell cover 120 to form an open U-shaped structure for supporting one end of the protective cover 600.

[0085] In this embodiment, the protective cover 600 has a rotating shaft on one side and / or both sides, and a movable hole on the second limiting edge and / or the third limiting edge to form a rotatable connection with the protective cover 600, ensuring that the protective cover 600 can be opened and closed flexibly. Preferably, in this embodiment, the second limiting edge and / or the third limiting edge has a guide groove communicating with the movable hole. This design allows the user to efficiently and accurately engage or disengage the rotating shaft of the protective cover 600 by simply pushing or pulling it along the guide groove, eliminating the reliance on traditional screw fixing tools and effectively improving the efficiency and convenience of installing the protective cover 600.

[0086] In this embodiment, the side of the first limiting edge opposite to the protective cover 600 has a first arc surface, and the protective cover 600 is provided with a second arc surface arranged opposite to the first arc surface. This design ensures the smoothness and stability of the protective cover 600 during rotation.

[0087] In this embodiment, the second mounting part 132 has a snap-fit ​​hole parallel to the first limiting edge. The snap-fit ​​hole is rectangular and is used to form a snap-fit ​​connection with the protective cover 600, thereby achieving a stable fixation of the other end of the protective cover 600 and ensuring the stability of the protective cover 600 in the closed state.

[0088] In this embodiment, the protective cover 600, on the side away from the pivot, is also provided with a protrusion that forms a snap-fit ​​connection with the snap-fit ​​hole. This protrusion has a first guide surface and a second guide surface arranged at opposite angles. The first guide surface primarily guides the protrusion to easily enter the snap-fit ​​hole during the closing process, while the second guide surface assists the protrusion in quickly disengaging from the snap-fit ​​hole during the opening process, thereby achieving smooth bidirectional operation and significantly reducing the force required by the user during operation. This allows the user to easily connect or disconnect the snap-fit ​​by simply pushing or pulling the protective cover 600.

[0089] In this embodiment, the cover 120 is provided with a second interface 140 through which the wireless communication connector 510 passes. A first shield 700 is detachably covered on the second interface 140, and a first seal 800 is provided between the first shield 700 and the second interface 140. The first seal 800 has an elastic deformation and can undergo elastic deformation under pressure when the first shield 700 is fixed to the second interface 140. This design, through the elastic deformation of the first seal 800 under pressure, forms a seamless seal between the first shield 700 and the second interface 140, thereby effectively preventing external moisture and dust from entering the battery pack through the wireless communication interface, significantly improving the sealing performance of the cover 120.

[0090] In this embodiment, the second interface 140 includes a third groove 141, a first shield 700 is embedded in the third groove 141, and has a fourth groove 701 arranged circumferentially thereafter. A first seal 800 is disposed between the fourth groove 701 and the third groove 141, and abuts against the inner walls of the fourth groove 701 and the third groove 141 respectively. This design provides an installation position for the first seal 800, ensuring that the first seal 800 can fit tightly between the first shield 700 and the second interface 140, thereby effectively filling the gap between the first shield 700 and the second interface 140 and preventing external moisture and dust from entering the wireless communication interface.

[0091] In this embodiment, the second interface 140 also includes a rectangular notch penetrating the housing 120 for the wireless communication connector 510 to extend out, thereby facilitating the user's installation of the wireless communication device.

[0092] In this embodiment, the first seal 800 is annular, conforming to the shape of the fourth groove 701, and the height of the first seal 800 after elastic deformation under pressure is 60% of the height of the third groove 141, meaning that the first seal 800 is compressed. This design ensures sufficient sealing force while taking into account the durability and adaptability of the seal, thereby achieving the best sealing effect.

[0093] In this embodiment, the first sealing member 800 is also provided with a fixing hole, which is located outside the fourth groove 701. Fasteners can pass through the fixing hole to detachably fix the first shielding member 700 within the third groove 141. This design ensures the stability of the connection between the first shielding member 700 and the cover 120 while preventing external water from seeping into the battery pack through the fasteners, further improving the sealing performance of the cover 120.

[0094] In this embodiment, the cover 120 is provided with a third interface 150 through which the Ethernet connector 520 passes. A second shield 710 is detachably installed on the third interface 150. The third interface 150 includes a fifth groove 151 and a sixth groove 152 arranged circumferentially and communicating with the outside. The fifth groove 151 surrounds the sixth groove 152, and a barrier portion 153 is provided between the fifth groove 151 and the sixth groove 152. The second shield 710 extends into the fifth groove 151. By providing the barrier portion 153 in the fifth groove 151 and the sixth groove 152, the water flowing along the second shield 710 is collected in the fifth groove 151, effectively preventing external moisture and dust from entering the interior of the Ethernet interface, and significantly improving the waterproof and dustproof level.

[0095] In this embodiment, the second blocking member 710 includes a first snap-fit ​​structure and a second snap-fit ​​structure. The first snap-fit ​​structure extends into the fifth groove 151, and the second snap-fit ​​structure extends into the sixth groove 152. A first snap-fit ​​portion is provided on the side wall of the sixth groove 152, and a second snap-fit ​​portion is provided on the second snap-fit ​​structure. The first snap-fit ​​portion and the second snap-fit ​​portion form a concave-convex fit. The first snap-fit ​​structure is mainly used for initial positioning, stably embedding the second blocking member 710 into the fifth groove 151. The second snap-fit ​​structure further cooperates with the first snap-fit ​​portion in the sixth groove 152, providing additional fixing function, reducing the use of screws, and further improving waterproof performance.

[0096] Preferably, in this embodiment, multiple second snap-fit ​​structures are provided, and at least one second snap-fit ​​structure is provided with a second snap-fit ​​portion, which is a rectangular slot. The first snap-fit ​​portion is a triangular protrusion, and the first snap-fit ​​portion is provided with a third guide surface and a fourth guide surface that face opposite directions and are arranged at an angle. This design not only improves the accuracy and stability of the installation of the second shield 710, but also further simplifies the operation process and enhances the protective performance of the overall system.

[0097] In this embodiment, an indicator light module 900 is also provided. The indicator light module 900 is located within the accommodating cavity 111 and includes a lamp holder 910 and an indicator light 920. The lamp holder 910 is detachably connected to the cover 120. One end of the indicator light 920 passes through the lamp holder 910, and the other end passes through the cover 120 and is exposed. The cover 120 has a fourth interface 160 through which the indicator light 920 passes, and a second sealing element 810 is provided between the fourth interface 160 and the indicator light 920. The second sealing element 810 has an elastic deformation capacity and can undergo elastic deformation under pressure when the lamp holder 910 is fixed to the cover 120. This design, through the elastic deformation of the second sealing element 810 under pressure, forms a seamless seal between the fourth interface 160 and the indicator light 920, effectively preventing external moisture and dust from entering the battery pack through the indicator light 920 interface, significantly improving the sealing performance of the cover 120.

[0098] In this embodiment, the fourth interface 160 includes a plurality of hollow cylinders extending from the outer side of the housing 120 toward the lamp holder 910, and the diameter of a single hollow cylinder is larger than the diameter of a single indicator light 920, so as to allow multiple indicator lights 920 to extend out respectively, and can also cooperate with the second sealing member 810 to achieve sealing.

[0099] To fix the indicator module 900, in this embodiment, the cover 120 is provided with a fixing post adjacent to the fourth interface 160. It is vertically disposed on the side of the cover 120 facing the accommodating cavity 111 and extends towards the lamp holder 910. It is detachably connected to the lamp holder 910 by fasteners.

[0100] In this embodiment, the second sealing member 810 is disposed between the hollow cylinder and the lamp holder 910, and has a through hole for the indicator light 920 to pass through. The through hole and the indicator light 920 form an interference fit to prevent external moisture and dust from seeping in along the gap between the through hole and the indicator light 920. Furthermore, when the second sealing member 810 is subjected to compressive elastic deformation, it can form a circumferential sealing layer between the indicator light 920 and the inner wall of the hollow cylinder, thereby effectively filling the gap between the indicator light 920 and the fourth interface 160, preventing external moisture and dust from seeping in through the fourth interface 160.

[0101] Preferably, in this embodiment, the second seal 810 is L-shaped to avoid the fixing post and prevent interference between them.

[0102] In this embodiment, the first seal 800 and the second seal 810 are made of elastic material, which has good elasticity and weather resistance, and can maintain stable sealing performance under various environmental conditions, ensuring long-term reliability.

Claims

1. A battery pack, characterized in that, include: The housing assembly (100) includes a housing (110) and a cover (120), the cover (120) being detachably disposed on the housing (110), and the housing (110) having a receiving cavity (111); A battery module (200) is disposed in the accommodating cavity (111) and has an electrode connector (210); A circuit board assembly (300) includes a first circuit board (310) and a second circuit board (320) disposed between the battery module (200) and the housing cover (120) and parallel to each other. The projections of the first circuit board (310) and the second circuit board (320) along the length direction of the housing assembly (100) overlap. The first circuit board (310) is detachably connected to the electrode connector (210), and the second circuit board (320) is electrically connected to the first circuit board (310). An electrical function module is provided, comprising a main electrical module (400) and an auxiliary function module (500). The main electrical module (400) includes an air switch (410) and a terminal block (420). One end of the air switch (410) and the terminal block (420) passes through the housing (120) and is exposed, while the other end is detachably connected to the first circuit board (310) and can be electrically connected to the battery module (200) through the first circuit board (310). The auxiliary function module (500) is located on the second circuit board (320) and can be electrically connected to the battery module (200) through the second circuit board (320).

2. The battery pack according to claim 1, characterized in that, The second circuit board (320) is disposed between the first circuit board (310) and the cover (120), and is located on the side of the first circuit board (310) away from the main electrical module (400), and the size of the second circuit board (320) is smaller than the size of the first circuit board (310).

3. A battery pack according to claim 2, characterized in that, The circuit board assembly (300) further includes 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), and the other side is detachably connected to the first circuit board (310). The second circuit board (320) is detachably disposed on the metal mounting bracket (330).

4. A battery pack according to claim 3, characterized in that, The metal mounting bracket (330) is provided with a first groove (331) recessed in a direction away from the first circuit board (310). The second circuit board (320) is detachably disposed in the first groove (331) by fasteners. The bottom wall of the first groove (331) is provided with at least one first mounting hole (332). The bottom wall of the first groove (331) is provided with a plurality of first notches (333) for the auxiliary function module (500) to pass through.

5. A battery pack according to claim 4, characterized in that, The first groove (331) has a first mounting edge (334) on its side. The first mounting edge (334) is parallel to the first circuit board (310) and has a height difference with the bottom wall of the first groove (331). The first mounting edge (334) can be detachably connected to the first circuit board (310) by fasteners. The bottom wall of the first groove (331) has at least one second mounting hole (335). The cover (120) has a first fixing seat (121) corresponding to the second mounting hole (335). The first fixing seat (121) and the second mounting hole (335) can be connected by fasteners.

6. A battery pack according to claim 4, characterized in that, The metal mounting bracket (330) is also provided with a second groove (336) arranged side by side with the first groove (331). The second groove (336) has a recess direction opposite to that of the first groove (331), and a heat-conducting element is provided between the outer wall of the second groove (336) and the first circuit board (310).

7. A battery pack according to claim 6, characterized in that, The second groove (336) has a second mounting edge (337) on its side. The second mounting edge (337) is parallel to the cover (120) and has a height difference with the bottom wall of the second groove (336). The cover (120) has a second fixing seat (122) corresponding to the second mounting edge (337). The second fixing seat (122) can be detachably connected to the second mounting edge (337) by fasteners. The bottom wall of the second groove (336) has at least one third mounting hole (338). The third mounting hole (338) can be detachably connected to the first circuit board (310) by fasteners. The second groove (336) has multiple second notches (339) that penetrate itself.

8. A battery pack according to claim 1, characterized in that, The first circuit board (310) is provided with a positive electrode mounting base (311) and a negative electrode mounting base (312), and the electrode connector (210) includes a positive electrode connecting piece (211) that is detachably connected to the positive electrode mounting base (311) by fasteners, and a negative electrode connecting piece (212) that is detachably connected to the negative electrode mounting base (312) by fasteners.

9. A battery pack according to claim 1, characterized in that, The first circuit board (310) is provided with two sets of first electrical terminals (313) passing through it. The wiring terminal (420) includes a positive terminal (421) and a negative terminal (422). The positive terminal (421) includes a first connector (421a), a second connector (421b), and a positive conductive element (421c). One end of the positive conductive element (421c) is connected to the first connector (421a), and the other end is connected to the second connector (421b). It also has a first fixing part (421d) detachably connected to a set of the first electrical terminals (313). The negative terminal (422) includes a third connector (422a), a fourth connector (422b) and a negative conductive element (422c). One end of the negative conductive element (422c) is connected to the third connector (422a) and the other end is connected to the fourth connector (422b). It also has a second fixing part (422d) detachably connected to another set of the first electrical terminals (313).

10. A battery pack according to claim 1, characterized in that, The first circuit board (310) is provided with a second electrical terminal (314) that passes through it, and the air switch (410) is detachably connected to the second electrical terminal (314) by fasteners.

11. A battery pack according to claim 1, characterized in that, The cover (120) is provided with a first interface (130) through which the air switch (410) passes. The first interface (130) has a first mounting part (131) and a second mounting part (132) extending vertically outward along the outer wall of the cover (120). A protective cover (600) is detachably covered on the first interface (130). One end of the protective cover (600) is rotatably connected to the first mounting part (131), and the other end is snapped to the second mounting part (132).

12. A battery pack according to claim 1, characterized in that, The auxiliary function module (500) includes a wireless communication connector (510) detachably plugged into the second circuit board (320). The cover (120) is provided with a second interface (140) through which the wireless communication connector (510) passes. A first shielding member (700) is detachably covered on the second interface (140), and a first sealing member (800) is provided between the first shielding member (700) and the second interface (140). The first sealing member (800) has an elastic deformation and can be compressed and elastically deformed when the first shielding member (700) is fixed on the second interface (140).

13. A battery pack according to claim 12, characterized in that, The second interface (140) includes a third groove (141), the first shielding member (700) is embedded in the third groove (141), and has a fourth groove (701) arranged along its own circumference. The first sealing member (800) is disposed between the fourth groove (701) and the third groove (141), and abuts against the inner walls of the fourth groove (701) and the third groove (141) respectively. The height of the first sealing member (800) after elastic deformation under pressure is 60% of the height of the third groove (141).

14. A battery pack according to claim 1, characterized in that, The auxiliary function module (500) further includes an Ethernet connector (520) detachably plugged into the second circuit board (320). The cover (120) is provided with a third interface (150) through which the Ethernet connector (520) passes. A second shield (710) is detachably installed on the third interface (150). The third interface (150) includes a fifth groove (151) and a sixth groove (152) that communicate with the outside. The fifth groove (151) surrounds the sixth groove (152), and there is a barrier (153) between the fifth groove (151) and the sixth groove (152). The second shield (710) extends into the fifth groove (151).

15. A battery pack according to claim 1, characterized in that, The system includes an indicator light module (900) disposed within the accommodating cavity (111). The indicator light module (900) includes a lamp holder (910) and an indicator light (920). The lamp holder (910) is detachably connected to the housing cover (120). One end of the indicator light (920) passes through the lamp holder (910), and the other end passes through the housing cover (120) and is exposed. The housing cover (120) is provided with a fourth interface (160) through which the indicator light (920) passes. A second sealing element (810) is provided between the fourth interface (160) and the indicator light (920). The second sealing element (810) has an elastic deformation and can be elastically deformed under pressure when the lamp holder (910) is fixed on the housing cover (120).

16. A battery pack according to claim 1, characterized in that, The cover (120) is made of plastic, and the cover (120) is provided with a metal reinforcing rib (123) on the side facing the accommodating cavity (111), and the metal reinforcing rib (123) extends along the length direction of the cover (120).

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