Collection line board connection type battery pack

Abstract

The invention discloses an acquisition line board connection type battery pack. The battery pack comprises at least one battery module, an acquisition line, a connection assembly and a slave control module, the battery modules are arranged in an array; each battery module comprises a plurality of battery cells, a mounting bracket and a plurality of conductive connecting pieces; the mounting bracket is arranged at the top of the battery cell; the conductive connecting pieces are arranged on the mounting bracket, and the adjacent battery cells are connected through the conductive connecting pieces; the acquisition circuit is arranged at the top of the mounting bracket and is connected with the battery cell; the slave control module is arranged at the rear end of the battery module array; the connecting assembly comprises a plurality of sockets, a plurality of first plugs and a plurality of second plugs; the acquisition circuit at the rearmost end of the array is electrically connected with the slave control module through the plugging matching of the first plug and the socket; the other acquisition lines are respectively and fixedly connected with the second plugs through a flexible connecting piece, and each second plug corresponds to one socket and is electrically connected with the slave control module. Through the arrangement, the wiring of the battery pack is simpler, and the cost is lower.

Description

Technical Field

[0001] The present invention relates to the field of battery energy technology, and in particular to a collection line-board connected battery pack. Background Art

[0002] Currently, energy storage battery packs and new energy vehicle battery packs are widely used in various high-performance scenarios, which put higher requirements on the system's safety, reliability and cost control.

[0003] In traditional designs, battery modules and slave control and acquisition modules are typically connected via electronic wiring harnesses. This connection method inherently incurs high manufacturing costs, and the complex wiring and welding processes further increase production and maintenance costs. Furthermore, given the limited internal space within the battery pack, traditional wiring harnesses require significant space, hindering high-energy-density battery pack designs and limiting the miniaturization and lightweighting of battery modules. Furthermore, traditional wiring harness connections result in a low degree of modularity, making disassembly and maintenance difficult. This hinders large-scale production and rapid subsequent maintenance, and falls short of meeting the requirements of modern intelligent battery management. Summary of the Invention

[0004] In order to address the deficiencies of the prior art, the present invention aims to provide a battery pack with a collection line board connection, which has low cost, neat wiring and high safety.

[0005] Based on the above purpose, the present invention adopts the following technical solutions: A battery pack with a collection line board connection includes: at least one battery module, a collection circuit, a connection assembly, and a slave control module; the battery modules are arranged in an array; each battery module includes several battery cells, a mounting bracket, and several conductive connectors; the mounting bracket is mounted on top of the battery cells; the conductive connector is at least partially mounted on the mounting bracket, and adjacent battery cells are connected via the conductive connectors; the collection circuit is mounted on top of the mounting bracket and connected to the battery cells; the collection circuit integrates voltage collection, temperature collection, and safety valve status collection functions; the slave control module is arranged at the rear end of the battery module array and is used to receive data information transmitted by the collection circuit; the connection assembly includes several sockets, several first plugs, and several second plugs; the first plug is fixed to the end of the collection circuit at the rear end of the array, and the socket is fixed to the slave control module; the collection circuit at the rear end of the array is electrically connected to the slave control module through the plug-in connection between the first plug and the socket; the remaining collection circuits are fixedly connected to the second plugs via a flexible connector, each second plug corresponding to a socket and electrically connected to the slave control module. The number of battery modules corresponds to the total number of first plugs and second plugs.

[0006] Furthermore, the conductive connector is an aluminum conductive sheet, and the conductive connector is connected to the battery cell by welding.

[0007] Furthermore, the flexible connector includes a flexible flat connecting line, and the flexible connector is fixedly connected to the acquisition line by welding or plugging.

[0008] Furthermore, the flexible connector includes two flexible flat connecting lines arranged in parallel, and the flexible connector is fixedly connected to the collection line by welding or plugging.

[0009] Furthermore, the slave control module is arranged perpendicular to the front and rear directions; the socket is arranged on the front end surface of the slave control module, facing the battery module; the first plug and the second plug are both horizontal plate type, and the first plug and the second plug are respectively connected to the socket horizontally with the plug-in board to the board, wherein the slave control module is a circuit board and can provide support for the socket.

[0010] Furthermore, the slave control module is arranged perpendicular to the front-to-back direction; the socket is arranged on the rear end surface of the slave control module, and the opening is arranged upward; the first plug and the second plug are both vertical plate type, and the first plug and the second plug are respectively vertically plugged into the socket, wherein the slave control module is a circuit board and can provide support for the socket.

[0011] Furthermore, the battery pack also includes a flame sensor, which is installed on the slave control module and arranged toward the battery module. The flame sensor can detect arcing and flame phenomena at the battery cell pole position and output an alarm signal to the slave control module.

[0012] Furthermore, the battery pack also includes a temperature and humidity sensor, which is installed on the slave control module.

[0013] Furthermore, an expansion detection member is provided on the mounting bracket, and the expansion detection member is electrically connected to the acquisition circuit, and is used to output an electrical signal to indicate the expansion state when the acquisition circuit is deformed due to the expansion of the battery cell.

[0014] Furthermore, a safety valve detection component is provided on the acquisition circuit, which includes a safety valve detection sensor, a first safety valve detection acquisition line and a second safety valve detection acquisition line. The first safety valve detection acquisition line and the second safety valve detection acquisition line are both arranged on the safety valve detection component and separated from each other; the safety valve detection component is electrically connected to the acquisition circuit; the first safety valve detection acquisition line and the second safety valve acquisition line are divided into sectors on the area of ​​the corresponding battery cell safety valve part, and are arranged in a mutually intersecting but non-connected manner, and are respectively connected to the acquisition circuit through an S-shaped winding connection path.

[0015] The aforementioned acquisition line-board battery pack, by installing the acquisition circuitry on top of the mounting bracket and integrating voltage, temperature, and safety valve status acquisition functions, effectively reduces the use of traditional electronic wiring harnesses, simplifies the wiring structure, and reduces manufacturing and maintenance costs. Furthermore, by using plugs and sockets in the connector assembly for modular electrical connections and flexible connectors for flexible connection of the acquisition circuitry, the system's modularity and assembly convenience are enhanced, facilitating large-scale mass production and subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a battery pack connected with a collection line board according to the present invention; Figure 2 This is a schematic structural diagram of a single battery module provided according to the present invention; Figure 3 is a schematic diagram of a first embodiment of a connection assembly provided according to the present invention; Figure 4 is a schematic diagram of a second embodiment of a connection assembly provided according to the present invention; Figure 5 is a schematic diagram of a third embodiment of a connection assembly provided according to the present invention; Figure 6 is a schematic diagram of a fourth embodiment of a connection assembly provided according to the present invention; Figure 7 is a top view of a single battery module provided according to the present invention; Figure 8 It is a structural schematic diagram of a safety valve detection component provided according to the present invention. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0018] At the same time, in order to clearly illustrate the technical solution of this application, the following are also defined: Figure 1 Upper, lower, left, right, front and back sides shown.

[0019] like Figure 1 and Figure 2 As shown, the present application provides a battery pack with an acquisition line-board connection, including: at least one battery module 1, an acquisition line 2, a slave control module 33 and a connection component 3.

[0020] Specifically, the battery modules 1 are arranged in an array. Each battery module 1 includes a plurality of battery cells 11, a mounting bracket 12, and a plurality of conductive connectors 13. The mounting bracket 12 is mounted on the top of the battery cell 11. The conductive connector 13 is at least partially arranged on the mounting bracket 12, and adjacent battery cells 11 are connected through the conductive connector 13. The acquisition circuit 2 is mounted on the top of the mounting bracket 12 and connected to the battery cell 11. The acquisition circuit 2 integrates voltage acquisition, temperature acquisition, and safety valve status acquisition functions. The slave control module 33 is arranged at the rear end of the battery module 1 array and is used to receive data information transmitted by the acquisition circuit 2. The connection component 3 includes a plurality of sockets 31, a plurality of first plugs 32a, and a plurality of second plugs 32b. The first plug 32a is fixed to the end of the acquisition circuit 2 at the rear end of the array, and the socket 31 is fixed to the slave control module 33.

[0021] The acquisition circuit 2 at the rear end of the array is electrically connected to the slave control module 33 via the first plug 32a and the socket 31. The remaining acquisition circuits 2 are fixedly connected to the second plugs 32b via a flexible connector 4. Each second plug 32b corresponds to a socket 31 and is electrically connected to the slave control module 33. The number of battery modules corresponds to the total number of first and second plugs.

[0022] The above configuration effectively reduces the manufacturing and maintenance costs of the battery pack. By reducing the use of electronic wiring harnesses and optimizing wiring methods, the battery pack's space utilization is improved, facilitating a miniaturized and lightweight design. Furthermore, the modular connection components 3 simplify assembly and disassembly of the battery pack, improving production efficiency and facilitating subsequent maintenance. The data acquisition circuit 2 integrates multiple detection functions, enhancing the safety and intelligence of the battery pack and meeting the technical requirements of modern high-performance energy storage.

[0023] Specifically, the conductive connector 13 is an aluminum conductive sheet, which is connected to the battery cell 11 by welding. Using aluminum conductive sheets instead of traditional copper conductive parts significantly reduces material costs, making it particularly suitable for large-scale mass production. The welding connection method simplifies the installation process and improves production efficiency. It also avoids the poor contact problems that can occur with traditional bolt or plug-in methods, improving the stability and safety of the conductive connection.

[0024] like Figure 3As shown, the flexible connector 4 includes a flexible flat connecting wire, and the flexible connector 4 is fixedly connected to the acquisition line 2 by welding or plugging. The first plug 32a and the second plug 32b have the same structure. The use of a flexible flat connecting wire as the flexible connector 4 can effectively solve the problems of limited internal space and complex wiring of the battery module 1. The flexible flat connecting wire has good flexibility and adaptability, and can be freely bent and adjusted in layout according to the internal structure of the battery pack, reducing the space occupied by traditional wiring harnesses and improving the neatness of wiring and space utilization. At the same time, the unified plug structure contributes to standardized manufacturing, reduces the variety of accessories and inventory costs, and simplifies maintenance work.

[0025] like Figure 4 As shown, the flexible connector 4 comprises two parallel flexible flat cables, which are fixedly connected to the acquisition circuit 2 by welding or plugging. This dual-wire parallel structure not only optimizes the signal and power transmission channels but also significantly improves the flexible connector 4's resistance to mechanical deformation, making it less susceptible to damage from external forces such as bending and compression, thereby enhancing the structural integrity and service life of the entire package system.

[0026] The flexible flat connecting line may be a flexible printed circuit board FPC or a flexible flat cable FFC.

[0027] like Figure 3 As shown, the slave control module 33 is arranged perpendicular to the front-to-back direction; the socket 31 is located on the front face of the slave control module 33, facing the battery module 1. The first plug 32a and the second plug 32b are both horizontally connected to the socket 31 in a board-to-board manner. The horizontal board-to-board connection saves space and achieves a compact layout, while also reducing the connection failure rate and improving the stability and reliability of the system. Furthermore, the horizontal design of the first and second plugs 32a, 32b facilitates operation and is suitable for automated assembly.

[0028] like Figure 5 As shown, the slave control module 33 is arranged perpendicular to the front-to-back direction; the socket 31 is arranged on the rear end face of the slave control module 33, and the opening is arranged upward; the first plug 32a and the second plug 32b are both vertical plate type, and the first plug 32a and the second plug 32b are respectively vertically plugged into the socket 31. Among them, the slave control module 33 is a circuit board and can provide support for the socket. The vertical plug-in design effectively improves the space utilization and wiring flexibility of the battery pack, and is particularly suitable for energy storage systems with high energy density and miniaturized design. The use of vertical plate plugs simplifies the plug-in and unplugging operations, facilitates assembly and maintenance, and improves the mechanical fixing strength and electrical connection reliability.

[0029] Through the above arrangement, the flexible connector 4 can be applied to Figures 3 to 6Four typical plug-in forms are shown: Figure 3 : Double-line horizontal plug structure: Two flexible flat connecting lines are arranged in parallel, and the horizontal plug and socket 31 are used for horizontal plugging to improve transmission capacity and anti-interference ability; Figure 4 : Single-line horizontal plug structure: uses a single flexible flat connecting line, combined with a horizontal plug and socket 31 for horizontal plugging, with a compact structure, suitable for areas with limited space; Figure 5 : Double-wire riser structure: Use two flexible flat connecting cables and combine them with riser plugs for vertical connection. The structure is more stable and suitable for high-density wiring requirements. Figure 6 : Single-line vertical board structure: uses a single flexible flat connecting line, and completes vertical plugging through the vertical board plug and the vertical socket 31. The wiring is flexible and conducive to three-dimensional stacking.

[0030] The above-mentioned different plug-in forms take into account both electrical connection stability and installation convenience by reasonably selecting the orientation and structural layout of the plug and socket 31, and are suitable for different battery pack structures and assembly processes.

[0031] like Figure 3 As shown, the battery pack also includes a flame sensor 5, which is mounted on the slave control module 33 and faces the battery module 1. The flame sensor 5 can detect arcing and flames at the battery cell 11 terminal position and output an alarm signal to the slave control module 33, thereby enhancing the system's active safety protection capabilities. This can effectively prevent arcing and fire accidents caused by local overheating and looseness during high-power charging and discharging.

[0032] The battery pack also includes a temperature and humidity sensor 6, mounted on the slave control module 33. This sensor dynamically monitors and intelligently manages the battery pack's operating environment, significantly improving system safety and reliability. This sensor can effectively prevent environmental degradation, which can lead to battery performance degradation, shortened battery life, and potential safety risks, particularly in complex operating conditions such as high temperature and high humidity.

[0033] like Figure 7 As shown, an expansion detector 7 is mounted on mounting bracket 13 and electrically connected to data acquisition circuit 2. This detector outputs an electrical signal indicating the expansion status when data acquisition circuit 2 deforms due to cell expansion. By monitoring the expansion status of cell 11 in real time, problems can be detected before cell 11 fails or becomes abnormal, preventing safety incidents such as short circuits, leaks, and thermal runaway caused by cell expansion.

[0034] like Figure 7 and Figure 8As shown, the device is characterized by a safety valve detection component 8 provided on the acquisition circuit 2. The safety valve detection component 8 includes a safety valve detection sensor 81, a first safety valve detection acquisition line 82, and a second safety valve detection acquisition line 83. The first and second safety valve detection acquisition lines 82 and 83 are both provided on the safety valve detection component 8 and separated from each other. When the safety valve leaks, the circuit within the safety valve detection component 8 contacts the safety valve liquid and outputs a corresponding electrical signal to the acquisition circuit 2, thereby improving the safety of the device operation. The safety valve detection component 8 is electrically connected to the acquisition circuit 2. The first and second safety valve detection acquisition lines 82 and 83 are arranged in a sector-shaped, intersecting, but non-connected arrangement over the area of ​​the corresponding battery cell safety valves, and are connected to the acquisition circuit 2 via an S-shaped winding connection path. This prevents damage to the safety valve detection sensor 81 caused by battery deformation and improves the stability of the structure.

[0035] The above is a description of the embodiments of the present invention. The above description of the disclosed embodiments will enable professionals in the field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals in the field. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be implemented in the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery pack with a collection line and board connection, characterized in that: include: At least one battery module (1), the battery modules (1) being arranged in an array; each battery module (1) comprising a plurality of battery cells (11), a mounting bracket (12), and a plurality of conductive connectors (13); the mounting bracket (12) being mounted on top of the battery cells (11); the conductive connectors (13) being at least partially disposed on the mounting bracket (12), and adjacent battery cells (11) being connected via the conductive connectors (13); A collection circuit (2), the collection circuit (2) is installed on the top of the mounting bracket (12) and connected to the battery cell (11); the collection circuit (2) integrates voltage collection, temperature collection, and safety valve status collection functions; A slave control module (33), the slave control module (33) being arranged at the rear end of the battery module (1) array and being used for receiving data information transmitted by the acquisition circuit (2); A connection assembly (3), the connection assembly (3) comprising a plurality of sockets (31), a plurality of first plugs (32a) and a plurality of second plugs (32b); the first plugs (32a) are fixed to the end of the acquisition line (2) at the rear end of the array, and the sockets (31) are fixed to the slave control module (33); The acquisition circuit (2) at the rear end of the array is electrically connected to the slave control module (33) through the plug-in connection between the first plug (32a) and the socket (31); The remaining acquisition circuits (2) are fixedly connected to the second plugs (32b) via a flexible connector (4), each second plug (32b) corresponds to a socket (31) and is electrically connected to the slave control module (33); the number of the battery modules (1) corresponds to the total number of the first plugs (32a) and the second plugs (32b).

2. The battery pack with acquisition line and board connection according to claim 1, characterized in that: The conductive connecting member (13) is an aluminum conductive sheet, and the conductive connecting member (13) is connected to the battery core (11) by welding.

3. The battery pack with acquisition line and board connection according to claim 1, characterized in that: The flexible connector (4) comprises a flexible flat connecting line, and the flexible connector (4) is fixedly connected to the acquisition line (2) by welding or plugging.

4. The battery pack with acquisition line and board connection according to claim 1, characterized in that: The flexible connector (4) comprises two flexible flat connecting lines arranged in parallel, and the flexible connector (4) is fixedly connected to the acquisition line (2) by welding or plugging.

5. The battery pack with acquisition line and board connection according to claim 1, characterized in that: The slave control module (33) is arranged perpendicular to the front-to-back direction; the socket (31) is arranged on the front end surface of the slave control module (33) and is arranged toward the battery module (1); the first plug (32a) and the second plug (32b) are both horizontally connected to the socket (31) in a board-to-board manner.

6. The battery pack with acquisition line and board connection according to claim 1, characterized in that: The slave control module (33) is arranged perpendicular to the front-to-back direction; the socket (31) is arranged on the rear end surface of the slave control module (33), with the opening facing upward; the first plug (32a) and the second plug (32b) are both vertical plate-type, and the first plug (32a) and the second plug (32b) are respectively connected to the socket (31) by vertical plugging.

7. The battery pack with acquisition line and board connection according to claim 1, characterized in that: The battery pack further comprises a flame sensor (5), which is mounted on the slave control module (33) and disposed toward the battery module (1). The flame sensor (5) can detect arcing and flame phenomena at the pole position of the battery cell (11) and output an alarm signal to the slave control module (33).

8. The battery pack with acquisition line and board connection according to claim 1, characterized in that: The battery pack further comprises a temperature and humidity sensor (6), and the temperature and humidity sensor (6) is mounted on the slave control module (33).

9. The battery pack with acquisition line and board connection according to claim 1, characterized in that: An expansion detection member (7) is provided on the acquisition circuit (2), and the expansion detection member (7) is electrically connected to the acquisition circuit (2) and is used to output an electrical signal to indicate an expansion state when the acquisition circuit (2) is deformed due to expansion of the battery cell.

10. The battery pack with acquisition line and board connection according to claim 1, characterized in that: A safety valve detection component (8) is provided on the mounting bracket (12), and the safety valve detection component (8) includes a safety valve detection sensor (81), a first safety valve detection acquisition line (82), and a second safety valve detection acquisition line (83). The first safety valve detection acquisition line (82) and the second safety valve detection acquisition line (83) are both provided on the safety valve detection component (8) and are separated from each other. The safety valve detection component (8) and the acquisition line (2), the first safety valve detection acquisition line (82) and the second safety valve detection acquisition line (83) are arranged in a sector shape on a portion of the area corresponding to the safety valve of the battery cell, and are arranged in a mutually intersecting but non-connected manner, and are respectively connected to the acquisition line (2) through an S-shaped winding connection path.

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