CN221102356U - Flexible connection structure between battery module sampling wire harness and battery - Google Patents
Flexible connection structure between battery module sampling wire harness and battery Download PDFInfo
- Publication number
- CN221102356U CN221102356U CN202322710012.0U CN202322710012U CN221102356U CN 221102356 U CN221102356 U CN 221102356U CN 202322710012 U CN202322710012 U CN 202322710012U CN 221102356 U CN221102356 U CN 221102356U
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- sampling
- battery
- wire harness
- metal tube
- plastic frame
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- 238000005070 sampling Methods 0.000 title claims abstract description 139
- 239000002184 metal Substances 0.000 claims abstract description 74
- 229920003023 plastic Polymers 0.000 claims abstract description 49
- 239000004033 plastic Substances 0.000 claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000002788 crimping Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The flexible connection structure between the battery module sampling wire harness and the battery consists of a sampling wire harness, a battery plastic frame, a plurality of metal tube springs and the like, wherein a plurality of step round holes are arranged on the plane of the battery plastic frame, each step round hole is provided with one metal tube spring, a sampling contact piece and a temperature sampling sensor of the battery module sampling wire harness are arranged between the step round hole of the battery plastic frame and the metal tube springs, a metal shell cathode of a cylindrical battery is arranged between the step round hole of the battery plastic frame and the metal tube springs, and after the arc-shaped elastic piece of the metal tube springs is deformed, the metal shell cathode of the battery is connected with the sampling contact piece of the sampling wire harness, and the temperature of the metal shell of the battery is conducted on the temperature sensor of the sampling wire harness. The invention fundamentally avoids the hidden quality and safety hazards generated by the process of welding the battery module sampling wire harness on the battery electrode, improves the product quality of the battery module, can realize the quick installation and disassembly of the single battery, does not influence the appearance quality and the battery performance of the single battery, and realizes the echelon utilization of the single battery.
Description
[ Field of technology ]
The utility model relates to the field of new energy battery module design and manufacture, in particular to a flexible connection structure between a battery module sampling wire harness and a battery, which is suitable for cylindrical battery combination.
[ Background Art ]
The current battery modules are single-layer battery packs with rated capacity of the battery modules formed by parallel connection of single batteries, and the voltage of the battery modules is increased by serial connection of the single-layer battery packs so as to reach the specified rated voltage. The BMS or the protection board of the battery module is connected with the serial connection point of each layer of parallel battery pack in the battery serial circuit through a sampling wire harness, samples the voltage of each layer of battery pack and the temperature of a specific battery shell, monitors the change of the voltage and the temperature of the battery pack, and carries out balanced management on each layer of battery pack. At present, voltage sampling wire harnesses of battery modules are welded on battery electrodes of each layer of battery pack in a welding mode, and because the sampling wire harnesses are relatively slim, the sampling wire harnesses are relatively easy to open and break, and quality hidden troubles such as open circuit of the sampling wire harnesses and even short circuit of the battery module are caused in the installation process and the use process. The welded battery is difficult to disassemble, the appearance and the battery performance of the single battery can be seriously affected by forced disassembly, and the requirement of the scrap battery echelon utilization proposed by the national government can not be met.
[ Invention ]
In order to solve the problems, the utility model provides a soft connection structure between a battery module sampling wire harness and a battery. And the series connection point of each layer of parallel battery pack of the battery module and the sampling contact point of the sampling wire harness of the battery module are connected together by utilizing the elasticity and the conductivity of the metal tube spring.
The flexible connection structure between the battery module sampling wire harness and the battery is composed of the sampling wire harness, a battery plastic frame, a plurality of metal tube springs and the like. The soft connection structure between the battery module sampling wire harness and the battery is a combined part of the battery module and is arranged on one side of the negative electrode of the battery metal steel shell of the battery module. The battery module sampling wire harness temperature sampling sensor is arranged between a cavity of the battery plastic frame and the outer diameter of the metal tube spring, and the metal tube spring is deformed and then used for conducting the battery metal shell temperature.
The step round holes of the battery plastic frame are arranged in a rectangular mode or in a triangular mode, the two end faces of the step round holes are respectively provided with an upper limit step and a lower limit step, axial movement of the metal tube spring can be limited, a concave table is arranged at the position of the plastic frame where the sampling wire harness is installed, and a cavity is arranged at the position of the plastic frame where the temperature sensor of the sampling wire harness is installed.
The metal tube spring is processed into an annular shape with an opening by adopting a metal sheet, a plurality of inward convex circular arc-shaped elastic pieces are arranged on the circumference of the annular shape, the outer diameter of the metal tube spring is consistent with the inner diameter of a step circular hole of the battery plastic frame, and the inner diameter of the circular arc-shaped elastic pieces of the metal tube spring is in interference fit with the diameter of the battery.
The battery module sampling pencil constitute by a plurality of wires, the one end of sampling pencil is the plug of connecting BMS or protection shield, every sampling contact and temperature sampling sensor are connected to the other end of sampling pencil, the sampling contact is processed into convex by sheet metal, is connected with sampling pencil through the technology of welding or crimping, the width of sampling contact is greater than the width of plastics frame concave station, can prevent that the sampling contact from unusual droing.
Preferably, the sampling contact piece of the battery module sampling wire harness can be replaced by an inverted U-shaped parallel sampling contact piece, two wings of the parallel sampling contact piece are arc-shaped, the diameter of the arc is consistent with the diameter of a step round hole of the plastic frame, the parallel sampling contact piece is arranged between two adjacent step round holes of the plastic frame, the inner diameter surface of the parallel sampling contact piece is attached to the outer diameter surface of the metal tube spring, the adjacent metal shell cathodes of the batteries are connected together by utilizing the elasticity and the conductivity of the metal tube spring, and the parallel connection of the two batteries can be realized.
Preferably, the battery module sampling wire harness can be formed by processing a flexible circuit board (FPC for short), the flexible circuit board comprises a plug, a temperature sampling sensor and a plurality of sampling contact pieces/parallel sampling contact pieces, the sampling contact pieces/parallel sampling contact pieces of the flexible circuit board are arranged between a step round hole of a plastic frame and a metal tube spring, and the circular arc inner diameter surface of the outer diameter surface of the metal tube spring is subjected to conductive treatment.
The application of the utility model can make the working procedures of the sampling wire harness installation and the battery parallel connection of the battery module simple and easy, and the connection is reliable, thereby fundamentally avoiding the hidden quality and the hidden safety trouble generated by the process of welding the sampling wire harness of the battery module on the battery electrode, improving the product quality of the battery module, realizing the quick installation and the disassembly of the single battery, and not affecting the appearance quality and the battery performance of the single battery, and realizing the echelon utilization of the single battery.
[ Description of the drawings ]
FIG. 1 is an isometric view of a plastic frame;
FIG. 2 is an isometric view of a metal tube spring;
Fig. 3 is a partially exploded view of an embodiment example 1 of a soft connection structure between a battery module sampling harness and a battery;
FIG. 4 is an isometric view of parallel sampling contacts;
FIG. 5 is an isometric view of example 2 of a flexible connection structure between a battery module sampling harness and a battery;
fig. 6 is an enlarged partial cross-sectional view of fig. 5.
Wherein: 1. a plastic frame; 1-1, a step round hole; 1-2, lower limit steps; 1-3, upper limit steps; 1-4, concave station; 1-5, hole; 2. a metal tube spring; 2-1, an arc-shaped elastic sheet; 2-2, opening; 3. parallel sampling contact pieces; 3-1, arc-shaped; 3-2, two wings; 4. sampling a wire harness; 4-1, a plug; 4-2, sampling a contact; 4-3, a temperature sampling sensor; 5. and a battery metal steel shell cathode.
[ Detailed description ] of the invention
The utility model will be further described in detail with reference to the drawings and examples of embodiments, to which the scope of protection of the utility model is not limited.
Implementation example one: is a soft connection structure between a sampling wire harness of a battery module formed by connecting 15 batteries in series and the batteries
As shown in fig. 1, a battery plastic frame (1) is formed by processing ABS plastic, 15 step round holes (1-1) are arranged on the plane of the battery plastic frame, the step round holes of the battery plastic frame are in rectangular arrangement in 3 rows and 5 columns, an upper limit step (1-2) and a lower limit step (1-3) are respectively arranged on two end faces of the step round holes, a concave table (1-4) is arranged at the position where a sampling wire harness and a sampling contact piece are installed on the battery plastic frame, and a cavity (1-5) is arranged at the position where a temperature sensor of the sampling wire harness is installed on the battery plastic frame.
As shown in fig. 2, the metal tube spring (2) is processed into a circular ring shape with an opening (2-2) by adopting a stainless steel sheet, 40 inward convex circular arc-shaped elastic pieces (2-1) are arranged on the circumference of the circular ring shape, the outer diameter of the metal tube spring is equal to the inner diameter of a step round hole (1-1) of the battery plastic frame, and the inner diameter of the circular arc-shaped elastic pieces of the metal tube spring is in interference fit with the diameter of the battery (5).
As shown in fig. 3, the battery module sampling wire harness (4) is formed by processing a flexible circuit board (FPC for short), one end of the sampling wire harness is connected with a plug (4-1) of the BMS, the other end of the sampling wire harness is provided with 15 sampling contacts (4-2) with voltage sampling points and 1 temperature sampling sensor (4-3), and one wire harness is connected with the total positive electrode of the battery module. The inner arc surface of the sampling contact piece (4-2) is subjected to conductive treatment, and the width of the sampling contact piece is larger than that of the concave table (1-4) of the battery plastic frame. The temperature sampling sensor (4-3) is welded on the flexible circuit board and is arranged in the middle of the cavity (1-5) of the plastic frame.
The soft connection structure between the battery module sampling wire harness and the battery is used as a combined part of the battery module and is arranged on one side of a battery metal steel shell cathode (5) of the battery module. A metal tube spring (2) is arranged on each step round hole (1-1) of the battery plastic frame, a sampling contact piece (4-2) of a battery module sampling wire harness is arranged between the inner diameter of the step round hole of the battery plastic frame and the outer diameter of the metal tube spring, a metal shell cathode (5) of a cylindrical battery is arranged in the middle of the metal tube spring, and the metal shell cathode of the battery is connected with the sampling contact piece of the sampling wire harness after the arc-shaped elastic piece of the metal tube spring is deformed. The temperature sampling sensor (4-3) of the battery module sampling wire harness is arranged between the cavity of the battery plastic frame and the outer diameter of the metal tube spring, and the circular arc-shaped elastic sheet of the metal tube spring is deformed and then conducts the temperature of the battery metal shell to the temperature sensor of the sampling wire harness.
Implementation example two: is a soft connection structure between a battery module sampling wire harness and a battery, wherein the battery module sampling wire harness consists of 30 batteries and is connected in series with 2-15 batteries
As shown in FIG. 5, the battery plastic frame (1) is formed by processing ABS plastic, 30 step round holes (1-1) are arranged on the plane of the battery plastic frame, the step round holes of the battery plastic frame are arranged in a triangle shape, and an upper limit step (1-2) and a lower limit step (1-3) are respectively arranged on two end faces of the step round hole. The battery plastic frame is provided with a concave table (1-4) at the position of the voltage sampling contact piece of the sampling wire harness, and a cavity (1-5) is arranged at the position of the temperature sensor of the sampling wire harness.
As shown in fig. 2, the metal tube spring (2) is processed into a circular ring shape with an opening (2-2) by adopting a phosphor bronze sheet, 50 inward convex circular arc-shaped elastic pieces (2-1) are arranged on the circumference of the circular ring shape, the outer diameter of the metal tube spring is equal to the inner diameter of a step round hole (1-1) of the battery plastic frame, and the inner diameter of the circular arc-shaped elastic pieces of the metal tube spring is in interference fit with the diameter of the battery (5).
As shown in fig. 4, the parallel sampling contact piece (3) is processed into an approximately inverted U shape by using a phosphor bronze thin plate, two wings (3-2) of the parallel sampling contact piece are arc-shaped, and the diameter of the arc-shaped (3-1) is consistent with the diameter of a step round hole (1-1) of the plastic frame. The parallel sampling contact pieces are arranged between two adjacent step round holes of the plastic frame, the parallel sampling contact pieces are attached to the outer diameter surface of the metal tube spring, and the adjacent battery metal shell cathodes (5) are connected in parallel by utilizing the elasticity and the conductivity of the metal tube spring.
As shown in fig. 5, the sampling wire harness (4) of the battery module consists of 18 wires, one end of the sampling wire harness is a plug (4-1) connected with the protection board, the other end of the sampling wire harness is connected with 15 parallel sampling contact pieces (3) and 1 temperature sampling sensor (4-3), and the other end of the sampling wire harness is connected with the total positive electrode of the battery module.
The soft connection structure between the battery module sampling wire harness and the battery is used as a combined part of the battery module and is arranged on one side of a battery metal steel shell cathode (5) of the battery module. A metal tube spring (2) is arranged in each step round hole (1-1) of a battery plastic frame, 15 parallel sampling contact pieces (3) are arranged in the middle of concave tables (1-4) in the middle of two adjacent step round holes of the plastic frame, two wings (3-2) of the parallel sampling contact pieces are arranged between the inner diameter of the step round holes of the battery plastic frame and the outer diameter of the metal tube spring, a battery metal shell negative electrode (5) is arranged in the middle of the metal tube spring, and the battery metal shell negative electrode is connected with a sampling contact piece of a sampling wire harness after the arc-shaped elastic piece of the metal tube spring is deformed. The temperature sampling sensor (4-3) of the battery module sampling wire harness is arranged between a cavity (1-5) of the battery plastic frame and the outer diameter of the metal tube spring, and the circular arc-shaped elastic piece of the metal tube spring is deformed to conduct the temperature of the battery metal shell to the parallel sampling contact piece and the temperature sensor.
Claims (5)
1. The soft connection structure between the battery module sampling wire harness and the battery consists of a sampling wire harness, a battery plastic frame and a plurality of metal tube springs, and is characterized in that a plurality of step round holes are arranged on the plane of the battery plastic frame, each step round hole is provided with one metal tube spring, a sampling contact piece of the battery module sampling wire harness is arranged between the inner diameter of the step round hole of the battery plastic frame and the outer diameter of the metal tube spring, a metal shell cathode of a cylindrical battery is arranged in the middle of the metal tube springs, the metal shell cathode of the battery is connected with the sampling contact piece of the sampling wire harness after the arc-shaped elastic piece of the metal tube spring is deformed, a temperature sampling sensor of the battery module sampling wire harness is arranged between a cavity of the battery plastic frame and the outer diameter of the metal tube spring, and the arc-shaped elastic piece of the metal tube spring is deformed and then the temperature of the battery metal shell is conducted on the temperature sensor of the sampling wire harness.
2. The flexible connection structure between the battery module sampling wire harness and the battery according to claim 1, wherein the step round holes of the battery plastic frame are arranged in a rectangular shape or a triangular shape, two end faces of the step round holes are respectively provided with an upper limit step and a lower limit step, so that axial movement of the metal tube spring can be limited, the plastic frame is provided with a concave table at the position where the sampling wire harness is installed, and the plastic frame is provided with a cavity at the position where the temperature sensor of the sampling wire harness is installed.
3. The flexible connection structure between a battery module sampling harness and a battery according to claim 1, wherein the battery module sampling harness is composed of a plurality of wires, one end of the sampling harness is a plug connected with a BMS or a protection board, the other end of the sampling harness is connected with each sampling contact and each temperature sampling sensor, the sampling contacts are processed into circular arcs by metal sheets and are connected with the sampling harness through a welding or crimping process, and the width of the sampling contacts is larger than that of a concave table of a plastic frame, so that abnormal falling of the sampling contacts can be prevented.
4. The flexible connection structure between the battery module sampling wire harness and the battery according to claim 1, wherein the sampling contact piece of the battery module sampling wire harness can be replaced by an inverted U-shaped parallel sampling contact piece, two wings of the parallel sampling contact piece are arc-shaped, the diameter of the arc-shaped is consistent with the diameter of a step round hole of the plastic frame, the parallel sampling contact piece is arranged between two adjacent step round holes of the plastic frame, the inner diameter surface of the parallel sampling contact piece is adhered to the outer diameter surface of the metal tube spring, and the adjacent metal shell cathodes of the battery can be connected together by utilizing the elasticity and the conductivity of the metal tube spring, so that the parallel connection of the two batteries can be realized.
5. The flexible connection structure between the battery module sampling harness and the battery according to claim 1, wherein the battery module sampling harness can be formed by processing a flexible circuit board (FPC), the flexible circuit board comprises a plug, a temperature sampling sensor and a plurality of sampling contact pieces/parallel sampling contact pieces, the sampling contact pieces/parallel sampling contact pieces of the flexible circuit board are arranged between a step round hole of a plastic frame and a metal tube spring, and the circular arc inner diameter surface of the sampling contact pieces/parallel sampling contact pieces on the outer diameter surface of the metal tube spring is subjected to conductive treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322710012.0U CN221102356U (en) | 2023-10-10 | 2023-10-10 | Flexible connection structure between battery module sampling wire harness and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322710012.0U CN221102356U (en) | 2023-10-10 | 2023-10-10 | Flexible connection structure between battery module sampling wire harness and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221102356U true CN221102356U (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322710012.0U Active CN221102356U (en) | 2023-10-10 | 2023-10-10 | Flexible connection structure between battery module sampling wire harness and battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221102356U (en) |
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2023
- 2023-10-10 CN CN202322710012.0U patent/CN221102356U/en active Active
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| GR01 | Patent grant |