A tear-resistant component, method, and application of a signal acquisition assembly

Abstract

This invention relates to a tear-resistant component, method, and application of a signal acquisition assembly. The tear-resistant component includes a battery cell and an integrated busbar. Multiple series busbars are disposed at the top of the battery cell. The integrated busbar includes a signal acquisition assembly, a plastic structural component, and a nickel plate. The signal acquisition assembly has a tear-resistant structure with the X-axis along the length of the plastic structural component, the Y-axis along the width of the plastic structural component, and the Z-axis perpendicular to the top of the plastic structural component. One end of the tear-resistant structure is fixedly connected to a nickel plate, and the other end of the tear-resistant structure is integrally formed with the signal acquisition assembly. The series busbars are fixedly connected to the nickel plate. This tear-resistant component, method, and application of the signal acquisition assembly have advantages such as extensibility, improved shock resistance, tear prevention, and extended lifespan.

Description

Technical Field

[0001] This invention relates to the field of new energy battery technology, and in particular to a tear-resistant component, tear-resistant method, and application of a signal acquisition assembly. Background Technology

[0002] Currently, flexible printed circuit boards (FPCs) are crucial components for signal acquisition in battery systems. Typically, the FPC and nickel sheet are soldered together; when the battery vibrates, the stress between the FPC and the nickel sheet can cause tearing.

[0003] During the battery charge-discharge cycle, the battery's temperature and volume will change. As a result, the nickel metal sheet on the FPC will be displaced relative to the FPC, thus exerting a relative force on the FPC. Therefore, there is a possibility that the FPC will fail due to tensile force.

[0004] To address these issues, we developed a tear-resistant component, method, and application for signal acquisition modules. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art by providing a tear-resistant component, method, and application for a signal acquisition assembly, which gives the information acquisition assembly advantages such as extensibility, improved shock resistance, tear prevention, and extended service life.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a tear-resistant component for a signal acquisition assembly, comprising a battery cell and an integrated busbar fixedly connected to the top of the battery cell. The integrated busbar includes a signal acquisition assembly, a plastic structural component, and a nickel sheet. The X-axis direction is along the length of the plastic structural component, the Y-axis direction is along the width of the plastic structural component, and the Z-axis direction is perpendicular to the top of the plastic structural component. Tear-resistant structures are evenly distributed on both sides of the X-axis direction of the signal acquisition assembly. A nickel sheet is fixedly connected to one end of each tear-resistant structure. A series busbar is staggered at the top of the battery cell, and the series busbar is fixedly connected to the nickel sheet.

[0007] Preferably, the signal acquisition component is connected to the battery management system.

[0008] Preferably, multiple U-shaped grooves are evenly arranged on both sides of the signal acquisition component in the X-axis direction. The tear-resistant structure is two symmetrically arranged H-shaped structures. One end of the tear-resistant structure is provided with a first connecting end, and the other end is provided with a second connecting end. The first connecting end and the signal acquisition component are integrally formed. The second connecting end is fixedly connected to one end of the nickel sheet.

[0009] Preferably, the tear-resistant structure is provided with multiple fixing ribs, which are disposed in the gaps of the T-shaped structure.

[0010] Preferably, the battery cells are arranged alternately with a first battery and a second battery in the X-axis direction. The first battery has a first positive terminal and a first negative terminal at its top, and the second battery has a second positive terminal and a second negative terminal at its top. The first negative terminal and the second positive terminal are fixedly connected by the series busbar.

[0011] Preferably, one end of the plastic structural component is fixedly connected to a first connector, and the other end is fixedly connected to a second connector. The first connector is fixedly connected to the first positive terminal, and the second connector is fixedly connected to the first negative terminal.

[0012] Preferably, a first sensor and a second sensor are respectively provided at both ends of the series busbar in the X-axis direction, the first sensor being fixedly connected to the first battery, and the second sensor being fixedly connected to the second battery.

[0013] Preferably, one end of the plastic structural component is provided with a plug-in terminal, and one end of the signal acquisition component is provided with a socket. The socket is plugged into the plug-in terminal, and the plug-in terminal is connected to the battery management system via a signal line.

[0014] Preferably, the tear-resistant method for the tear-resistant component of the signal acquisition assembly includes the following steps: S10. Battery cell vibration, the series busbar drives the signal acquisition component to vibrate in the X-axis, Y-axis and Z-axis directions through the nickel sheet; S20. When the vibration intensity increases, the force on the nickel sheet in the spatial direction increases, and the fixing ribs in the middle of the tear-resistant structure break in sequence; S30. The fixing rib near the second connecting end breaks first, and the fixing rib near the first connecting end breaks later; S40. Spatial vibrations will not cause the tear-resistant structure to break. The voltage detected by the first sensor and the temperature detected by the second sensor are transmitted to the battery management system through the signal acquisition component.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The tear-resistant structure of the signal acquisition component makes the FPC structure extensible, with the length of the nickel sheet being 3 to 5 times the width of the nickel sheet welding, thereby improving the tear resistance of the signal acquisition component during the signal acquisition process.

[0016] 2. Improves the tear resistance and elongation of the structure, providing greater flexibility without causing the FPC to tear and fail, thus extending its service life.

[0017] 3. This technology can be applied to all products in the series, improving assembly convenience and reducing costs. Attached Figure Description

[0018] Figure 1 This is a perspective view of the integrated battery cell of the tear-resistant component of the signal acquisition assembly described in this invention.

[0019] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 This is a schematic diagram of the tear-resistant component of the signal acquisition assembly described in this invention.

[0021] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figures 1 to 4 A tear-resistant component for a signal acquisition assembly includes a battery cell 10 and an integrated busbar fixedly connected to the top of the battery cell 10. The integrated busbar includes a signal acquisition assembly 30, a plastic structural component 20, and multiple sets of nickel plates 40. The X-axis direction is along the length of the plastic structural component 20, the Y-axis direction is along the width of the plastic structural component 20, and the Z-axis direction is perpendicular to the top of the plastic structural component 20. Tear-resistant structures 31 are evenly distributed on both sides of the signal acquisition assembly 30 in the X-axis direction. One end of each tear-resistant structure 31 is fixedly connected to a nickel plate 40. Multiple series busbars 13 are staggered at the top of the battery cell 10 and are fixedly connected to the nickel plates 40. The signal acquisition assembly 30 is connected to a battery management system via signal lines. The nickel plates are welded to the series busbars by laser or resistance welding, and the series busbars are welded to the terminals of the battery cell by laser welding.

[0024] Multiple U-shaped grooves 301 are evenly arranged on both sides of the X-axis direction of the signal acquisition component 30, and a row of annular through holes 32 is provided in the middle. The explosion-proof valve 115 is located on the lower side of the annular through holes. The tear-resistant structure 31 consists of two symmetrically arranged "H"-shaped structures with their tail ends connected. The head end of one "H"-shaped structure is integrally formed with the signal acquisition component 30, and the head end of the other "H"-shaped structure is clearance-fitted with the signal acquisition component 30. The signal acquisition component is preferably an FPC flexible circuit board. One end of the tear-resistant structure 31 is provided with a first connecting end 310, and the other end is provided with a second connecting end 311. The first connecting end 310 is integrally formed with the signal acquisition component 30, and the second connecting end 311 is fixedly connected to one end of the nickel sheet 40.

[0025] The tear-resistant structure 31 is provided with multiple fixing ribs 39, which are symmetrically arranged in the gaps of the two I-shaped structures along their symmetrical center lines. Each I-shaped structure has four fixing ribs 39, such as... Figure 4 As shown, there are two J-shaped structures in the X-axis direction and two in the Y-axis direction.

[0026] A first battery 11 and a second battery 12 are staggered along the X-axis of the battery cells 10. The first battery 11 has a first positive terminal 111 and a first negative terminal 112 at its top, with an explosion-proof valve 115 between them. The second battery 12 has a second positive terminal 121 and a second negative terminal 122 at its top, with the first negative terminal 112 and the second positive terminal 121 fixedly connected by a series busbar 13. Preferably, the first battery 11 and the second battery 12 have the same structural dimensions.

[0027] One end of the plastic structural component 20 is fixedly connected to a first connector 21, and the other end of the plastic structural component 20 is fixedly connected to a second connector 29. The first connector 21 is fixedly connected to a first positive terminal 111, and the second connector 29 is fixedly connected to a first negative terminal 112. The first battery 11 and the second battery 12 are connected in series. The voltage and temperature status of the battery cells are transmitted to the battery management system through nickel strips, FPC flexible circuit boards, and signal lines.

[0028] A first sensor 14 for detecting voltage and a second sensor 15 for detecting temperature are respectively provided at both ends of the series bus 13 in the X-axis direction. The first sensor 14 is fixedly connected to the first battery 11, and the second sensor 15 is fixedly connected to the second battery 12.

[0029] A plug-in terminal 22 is provided at one end of the plastic structural component 20, and a socket 50 is provided at one end of the signal acquisition component 30. The socket 50 is plugged into the plug-in terminal 22, and the plug-in terminal 22 is connected to the battery management system through a signal line.

[0030] A tear-resistant method for the tear-resistant component of a signal acquisition assembly includes the following steps: S10. The battery cell 10 vibrates, and the series bus 13 drives the signal acquisition component 30 to vibrate in the X-axis, Y-axis and Z-axis directions through the nickel sheet 40.

[0031] S20. When the vibration intensity increases, the force on the nickel sheet 40 in the spatial direction increases, and the fixing ribs 39 in the middle of the tear-resistant structure 31 break sequentially in a clockwise direction; the length of the nickel sheet 40 is 3 to 5 times the welding width of the nickel sheet 40. When it is 5 times, the elongation of the nickel sheet is greater than 3 times. First, the deformation displacement changes are absorbed by the nickel sheet, and then by the tear-resistant structure 31, so that the nickel sheet and the FPC body are not damaged by tensile force.

[0032] S30. The fixing rib 39 near the second connecting end 311 breaks first, and the fixing rib 39 near the first connecting end 310 breaks later. The tear-resistant structure 31 extends flexibly to prevent tearing due to force. The fixing ribs also serve a positioning function, facilitating welding and positioning between the nickel sheet and the tear-resistant structure 31 and the pole.

[0033] S40. Spatial vibrations will not cause the tear-resistant structure 31 to break. The first sensor 14 transmits the detected voltage and the second sensor 15 transmit the detected temperature to the battery management system through the signal acquisition component 30.

[0034] Tear-resistant components in signal acquisition modules are used in secondary batteries, lithium-ion battery packs, energy storage battery packs, or new energy power batteries. This allows the information acquisition module to extend under stress, improving the overall shock resistance of the component, preventing tearing at the nickel plate connections due to stress, and extending its service life.

[0035] The above are merely specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. All technical solutions formed by equivalent transformations or substitutions fall within the scope of protection of the present invention.

Claims

1. A tear-resistant component for a signal acquisition assembly, characterized in that: The battery includes a battery cell (10) and an integrated busbar fixedly connected to the top of the battery cell (10). The integrated busbar includes a signal acquisition component (30), a plastic structural component (20), and a nickel sheet (40). The X-axis direction is along the length of the plastic structural component (20), the Y-axis direction is along the width of the plastic structural component (20), and the Z-axis direction is perpendicular to the top of the plastic structural component (20). Tear-resistant structures (31) are evenly distributed on both sides of the X-axis direction of the signal acquisition component (30). A nickel sheet (40) is fixedly connected to one end of the tear-resistant structure (31). A series busbar (13) is staggered at the top of the battery cell (10). The series busbar (13) is fixedly connected to the nickel sheet (40). The signal acquisition component (30) is connected to the battery management system.

2. The tear-resistant component of the signal acquisition assembly according to claim 1, characterized in that, Multiple U-shaped grooves (301) are evenly arranged on both sides of the X-axis direction of the signal acquisition component (30). The tear-resistant structure (31) consists of two symmetrically arranged hexagonal structures. One end of the tear-resistant structure (31) is provided with a first connecting end (310), and the other end is provided with a second connecting end (311). The first connecting end (310) and the signal acquisition component (30) are integrally formed. The second connecting end (311) is fixedly connected to one end of the nickel sheet (40).

3. The tear-resistant component of the signal acquisition assembly according to claim 2, characterized in that, The tear-resistant structure (31) is provided with a plurality of fixing ribs (39), which are located in the gaps of the T-shaped structure.

4. The tear-resistant component of the signal acquisition assembly according to claim 1, characterized in that, The battery cell (10) has a first battery (11) and a second battery (12) arranged alternately in the X-axis direction. The first battery (11) has a first positive terminal (111) and a first negative terminal (112) at its top end. The second battery (12) has a second positive terminal (121) and a second negative terminal (122) at its top end. The first negative terminal (112) and the second positive terminal (121) are fixedly connected by the series busbar (13).

5. The tear-resistant component of the signal acquisition assembly according to claim 4, characterized in that, One end of the plastic structural component (20) is fixedly connected to the first connector (21), and the other end is fixedly connected to the second connector (29). The first connector (21) is fixedly connected to the first positive terminal (111), and the second connector (29) is fixedly connected to the first negative terminal (112).

6. The tear-resistant component of the signal acquisition assembly according to claim 4, characterized in that, The series busbar (13) has a first sensor (14) and a second sensor (15) at both ends of the X-axis direction. The first sensor (14) is fixedly connected to the first battery (11), and the second sensor (15) is fixedly connected to the second battery (12).

7. The tear-resistant component of the signal acquisition assembly according to claim 1, characterized in that, The plastic structural component (20) has a plug-in end (22) at one end, and the signal acquisition component (30) has a socket (50) at one end. The socket (50) is plugged into the plug-in end (22), and the plug-in end (22) is connected to the battery management system via a signal line.

8. The tear-resistant method for the tear-resistant component of the signal acquisition assembly according to claim 1, 3, 5, 6 or 7, characterized in that, Includes the following steps: S10. The battery cell (10) vibrates, and the series bus (13) drives the signal acquisition component (30) to vibrate in the X-axis, Y-axis and Z-axis directions through the nickel sheet (40); S20. When the vibration intensity increases, the force on the nickel sheet (40) in the spatial direction increases, and the fixing rib (39) in the middle of the tear-resistant structure (31) breaks in sequence. S30. The fixing rib (39) near the second connecting end (311) breaks first, and the fixing rib (39) near the first connecting end (310) breaks later; S40. Spatial vibration will not cause the tear-resistant structure (31) to break. The first sensor (14) transmits the detected voltage and the second sensor (15) transmits the detected temperature to the battery management system through the signal acquisition component (30).

9. The tear-resistant method for the tear-resistant component of the signal acquisition assembly according to claim 8, characterized in that, In step S20, the length of the nickel sheet (40) is 3 to 5 times the welding width of the nickel sheet (40).

10. The application of a tear-resistant member in a signal acquisition assembly according to any one of claims 1-7, characterized in that, The tear-resistant component of the signal acquisition assembly is used in secondary batteries, lithium-ion battery packs, energy storage battery packs, or new energy power batteries.

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