Battery detection device and battery pack

Abstract

The embodiment of the utility model provides a battery detection device and a battery pack, and relates to the field of batteries. The battery detection device comprises a panel, a plurality of flat cable strips, a first connecting film layer and a second connecting film layer, the plurality of flat cable strips are arranged on the panel, and the plurality of flat cable strips are arranged side by side at intervals; the first connecting film layer, the panel and the second connecting film layer are sequentially stacked; wherein the first connecting film layer is provided with a plurality of first interfaces, and each first interface corresponds to at least one flat cable strip; any first interface is used for exposing at least one flat cable strip, so that the battery cell can be connected with external voltage acquisition or temperature acquisition equipment through the flat cable strip. By arranging the first connecting film layer and the second connecting film layer, the plurality of flat cable strips on the panel can be fixed, and the flat cable strips can be protected. By arranging the first interface, the flat cable strip can be exposed to be connected with an external battery cell, so that the voltage or temperature of the battery cell is acquired, and the battery cell is detected and monitored. And the universality is high.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery testing device and a battery pack. Background Technology

[0002] Currently, existing battery pack voltage detection devices mainly connect the battery cells to voltage or temperature acquisition equipment via voltage acquisition lines. Voltage acquisition lines primarily include wire harnesses, FPCs (flexible printed circuit boards), and FFCs (flexible flat cables).

[0003] However, the manufacturing process of wire harnesses involves mostly manual operations, making automation virtually impossible. Furthermore, in actual use, manual operation is required almost throughout the entire process, which is highly prone to errors and results in long installation times. FPCs have complex structures and require etching processes during manufacturing, leading to lengthy processing times. Similar to wire harnesses, FFC production involves significant manual operations, making automation difficult and resulting in long installation times. Moreover, the existing voltage acquisition lines are mostly exposed and susceptible to damage. Utility Model Content

[0004] This invention provides a battery testing device and battery pack, which can simplify the structure, save processing and installation time, and protect the wiring.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a battery testing device, which includes:

[0007] panel;

[0008] Multiple line lines are provided on the panel, and the multiple line lines are arranged side by side and spaced apart;

[0009] A first connecting film layer and a second connecting film layer are sequentially stacked together;

[0010] The first connecting film layer has multiple first interfaces, each first interface corresponding to at least one of the ribbon lines; any one of the first interfaces is used to expose at least one of the ribbon lines, so that the battery cell can be connected to an external voltage or temperature acquisition device through the ribbon lines.

[0011] In an optional implementation, a plurality of the first interfaces are spaced apart along the length direction of the ribbon line.

[0012] In an optional embodiment, the battery testing device further includes a plurality of nickel plates, one end of each nickel plate being connected to a ribbon cable via the first interface, and the other end of the nickel plate being used to connect to the battery cell.

[0013] In an optional embodiment, the battery testing device further includes a plurality of NTC components, one end of each NTC component being connected to the ribbon cable via at least one of the first interfaces, and the other end of each NTC component being connected to one end of at least one of the nickel sheets.

[0014] In an optional embodiment, the battery testing device further includes a plurality of length adjustment members, each of the nickel sheet and the NTC assembly being provided with a length adjustment member, the length adjustment member being used to ensure that the ends of the nickel sheets located on the same side that are connected to the battery cell are on the same horizontal line.

[0015] In an optional implementation, the first interface is manufactured using a die-cutting process.

[0016] In an optional embodiment, the ribbon line is a straight line structure and is manufactured using a circular die-cutting process.

[0017] In an optional embodiment, the first connecting film layer has a plurality of connector interfaces, each of which corresponds one-to-one with a plurality of ribbon lines, and the plurality of connector interfaces are located at the same end of the plurality of ribbon lines; the connector interfaces are manufactured using a die-cutting process.

[0018] In an optional embodiment, the battery testing device further includes a connector that connects to the plurality of the wire strips via the connector interface.

[0019] An embodiment of this utility model also provides a battery pack, including the battery detection device described in any of the above embodiments and a plurality of battery cells, each of the battery cells being connected to at least one of the ribbon cables through the first interface.

[0020] The beneficial effects of the battery testing device and battery pack of this utility model embodiment include, for example:

[0021] This battery testing device includes a panel, multiple ribbon lines, a first connecting film layer, and a second connecting film layer. The ribbon lines are all disposed on the panel and are spaced apart. The first connecting film layer, the panel, and the second connecting film layer are stacked sequentially. The first and second connecting film layers both fix the ribbon lines on the panel and protect them. The first connecting film layer has multiple first interfaces, each corresponding to at least one ribbon line. Any one first interface exposes at least one ribbon line, allowing the battery cell to connect to an external voltage or temperature acquisition device via the ribbon lines. By providing the first interfaces, the ribbon lines can be exposed and connected to external battery cells to collect the cell's voltage or temperature for testing and monitoring. This design simplifies the structure of the battery testing device, saves processing and installation time, improves installation efficiency, and also provides some protection for the ribbon lines. Furthermore, this battery testing device is highly versatile and applicable to various battery packs of different sizes and specifications. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram from a first-view perspective of the battery detection device provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram from a second perspective of the battery detection device provided in an embodiment of the present invention;

[0025] Figure 3 This is a partially enlarged schematic diagram of point A provided in an embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram from a first-view perspective of a battery testing device including a nickel sheet and an NTC component provided in an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram from a second perspective of a battery testing device including a nickel sheet and an NTC component provided in an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of a battery detection device including a connector provided in an embodiment of the present invention.

[0029] Icons: 1000 - Battery testing device; 100 - First connecting film layer; 110 - First interface; 200 - Second connecting film layer; 300 - Panel; 400 - Linear line; 410 - Connector interface; 500 - Nickel sheet; 600 - NTC component; 700 - Length adjustment piece; 800 - Connector. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0035] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0036] Currently, existing battery pack voltage detection devices primarily connect the battery cells to voltage or temperature acquisition equipment via voltage acquisition lines. These lines mainly include wire harnesses, FPCs (flexible printed circuit boards), and FFCs (flexible flat cables). However, wire harness manufacturing involves largely manual operation, making automation virtually impossible. Furthermore, in practical use, manual operation is required almost throughout the entire process, increasing the risk of errors and resulting in long installation times. FPC manufacturing requires etching processes, which are time-consuming and environmentally polluting. Different products require separate operation, making them non-interchangeable and leading to high initial investment costs. Unless mass production is undertaken, FFCs lack competitive advantages. Similar to wire harnesses, FFC production involves significant manual operation, making automation difficult and resulting in long installation times. Moreover, none of the three voltage acquisition line manufacturing methods can be universally applied. Individual molds are needed for each battery pack size and specification, posing significant challenges to cost and timeliness.

[0037] Based on this, please refer to Figure 1 and Figure 2 The battery testing device 1000 provided in the embodiments of this utility model can effectively improve the aforementioned technical problems. The battery testing device 1000 simplifies the structure, saves processing and installation time, and provides protection for the wiring harness 400. Furthermore, the battery testing device 1000 is highly versatile and applicable to various battery packs of different sizes and specifications. The battery testing device 1000 is used in battery packs or battery modules; all devices equipped with this battery testing device 1000 have the same functions as described above, and will not be elaborated further here.

[0038] The battery pack provided in this embodiment includes a battery detection device 1000 and multiple battery cells. Each battery cell is connected to at least one ribbon cable 400 via a first interface 110. One ribbon cable 400 can connect to one battery cell, or multiple battery cells can be connected to the same ribbon cable 400; this is not limited here. To facilitate the detection and monitoring of each battery cell, in this embodiment, one ribbon cable 400 connects only one battery cell, so that detection and control are performed one-to-one, ensuring that the control between each battery cell does not affect each other. Depending on the actual use, the battery pack may also include other structural components such as liquid cooling components to achieve various functions; this is not limited here.

[0039] Figure 1 This is a schematic diagram from a first-view perspective of the battery detection device 1000 provided in an embodiment of the present invention; Figure 2 This is a schematic diagram from a second perspective of the battery detection device 1000 provided in an embodiment of the present invention; Figure 3 This is a partially enlarged schematic diagram of point A provided in an embodiment of this utility model. For example... Figure 1 , Figure 2 and Figure 3 As shown, the battery testing device 1000 provided in this embodiment includes a panel 300, multiple strip lines 400, a first connecting film layer 100, and a second connecting film layer 200. The multiple strip lines 400 are all disposed on the panel 300, and are arranged side-by-side with intervals. The first connecting film layer 100, the panel 300, and the second connecting film layer 200 are stacked sequentially. The first connecting film layer 100 has multiple first interfaces 110, each first interface 110 corresponding to at least one strip line 400. Any one first interface 110 is used to expose at least one strip line 400, allowing the battery cell to connect to an external voltage or temperature acquisition device through the strip lines 400. The length and width of the strip lines are determined according to the actual product and are not limited here. By setting the first connecting film layer 100 and the second connecting film layer 200, both the multiple strip lines 400 on the panel 300 can be fixed, and the strip lines 400 can be protected. The mounting cable 400 is used to connect the battery cell to a voltage or temperature acquisition device for real-time detection and monitoring of the battery cell's voltage or temperature to ensure normal operation. By providing a first interface 110, the mounting cable 400 can be exposed and connected to an external battery cell to acquire its voltage or temperature for detection and monitoring. This design simplifies the structure of the battery testing device 1000, saves processing and installation time, and improves installation efficiency, while also providing some protection for the mounting cable 400. Furthermore, the battery testing device 1000 is universal and suitable for various battery packs of different sizes and specifications, eliminating the need for separate molds to manufacture different testing devices for each battery pack, thus reducing production costs.

[0040] For easier connection of the 400-type cable and multiple battery cells, please refer to [link / reference]. Figure 2 and combined Figure 3 In this embodiment, multiple first interfaces 110 are spaced apart along the length of the ribbon cable 400. In this embodiment, the spacing between two adjacent first interfaces 110 is equal to the thickness of the battery cell. Of course, the spacing between two adjacent first interfaces 110 can also be other values, as long as it facilitates the connection between each battery cell and the ribbon cable 400, and is not limited here.

[0041] Figure 4 This is a first-view schematic diagram of a battery detection device 1000 including a nickel sheet 500 and an NTC component 600 provided in an embodiment of the present invention. Figure 5 for Figure 4 A diagram from another perspective. Please see below. Figure 4 and Figure 5The battery testing device 1000 in this embodiment also includes multiple nickel plates 500. For each nickel plate 500, one end is connected to a ribbon cable 400 via a first interface 110, and the other end is used to connect to the battery cell. The nickel plates 500 possess excellent conductivity, stability, and corrosion resistance, playing a crucial conductive role within the battery. Both the positive and negative electrodes inside the battery require nickel plates 500 to carry and conduct charge. The nickel plates 500 ensure stable charge transmission within the battery, preventing charge loss during transit and thus improving battery efficiency.

[0042] Please continue reading. Figure 4 and Figure 5 The battery detection device 1000 in this embodiment also includes multiple NTC components 600. One end of each NTC component 600 is connected to a ribbon cable 400 through at least one first interface 110, and the other end of each NTC component 600 is connected to one end of at least one nickel plate 500. Each NTC component 600 may cover one or more first interfaces 110 and can be connected to one or more ribbon cables 400 through one or more first interfaces 110. In this embodiment, one end of an NTC component 600 is connected to a ribbon cable 400 through a first interface 110, and the other end of the NTC component 600 is connected to a nickel plate 500. Of course, when the multiple first interfaces 110 and multiple nickel plates 500 are arranged relatively closely, one NTC component 600 can be connected to multiple different ribbon cables 400 through two, three, or four or more first interfaces 110.

[0043] NTC component 600 refers to an NTC thermistor installed in the battery pack. An NTC thermistor is a negative temperature coefficient thermistor, meaning its resistance decreases as temperature increases. Connected in series in the power circuit, NTC component 600 effectively suppresses inrush current during power-on, protecting the battery and circuitry. Furthermore, the resistance of the NTC thermistor decreases as the battery temperature rises. The battery charging control IC detects changes in voltage to determine the battery temperature, stopping charging or discharging when the temperature is too high to prevent overheating and explosion. The battery NTC component 600 plays a crucial role in battery protection due to its negative temperature coefficient characteristics, effectively suppressing inrush current and detecting battery temperature to ensure safe battery use. Of course, NTC component 600 can be replaced with a PTC component or other structural components that protect the battery from overcharging; this is not limited to these options.

[0044] Please see Figure 4The battery testing device 1000 in this embodiment also includes multiple length adjustment components 700. Each nickel sheet 500 and NTC assembly 600 is provided with a length adjustment component 700. The length adjustment component 700 is used to ensure that the ends of the nickel sheets 500 located on the same side that are connected to the battery cell are on the same horizontal line. By providing the length adjustment component 700, the same type of NTC assembly 600 and the same size nickel sheet 500 can be selected to improve versatility and save processing and installation time. Of course, the length adjustment component 700 can also be omitted, and the length of the nickel sheet 500 is determined by the straight-line distance between the first interface 110 and the battery cell.

[0045] Because existing FPCs mostly employ etching processes, these processes generate large amounts of waste liquid, exhaust gas, noise, and dust. The waste liquid contains harmful substances such as acids, alkalis, and heavy metals; direct discharge without treatment will severely pollute water bodies and soil. The exhaust gas contains smoke and harmful gases, seriously impacting air quality. Long-term exposure to etching solutions can harm health. Accidental inhalation of etching solutions can cause metal fume fever, respiratory corrosion, rhinitis, laryngitis, shortness of breath, and coughing; in severe cases, it can lead to respiratory distress and pulmonary edema. Ingestion of etching solutions can burn the mouth and digestive tract, causing hemorrhagic gastritis, damage to the liver, kidneys, central nervous system, and hemolysis. Furthermore, the noise and dust generated during etching equipment operation also harm the health of workers and the quality of life of nearby residents.

[0046] To reduce environmental pollution and ensure the health of operators, the battery testing device 1000 in this embodiment is manufactured using a die-cutting process. The ribbon lines 400 are straight structures and are manufactured using a circular die-cutting process. The first interface 110 is also manufactured using a die-cutting process. Furthermore, the first connecting film layer 100 in this embodiment has multiple connector interfaces 410, each corresponding one-to-one with a ribbon line 400, and all connector interfaces 410 are located at the same end of the ribbon lines 400; the connector interfaces 410 are also manufactured using a die-cutting process. The multiple connector interfaces 410 also serve to expose the multiple ribbon lines 400. Moreover, using die-cutting to manufacture the battery testing device 1000 can improve automation, reduce on-site production personnel, increase processing efficiency, and save processing and installation time.

[0047] To facilitate the connection of multiple line strips to voltage or temperature acquisition devices and simplify the wiring, please refer to [link / reference needed]. Figure 6 , Figure 6 This is a schematic diagram of a battery testing device 1000 including a connector 800 provided in an embodiment of the present invention. The battery testing device 1000 in this embodiment also includes a connector 800, which is connected to multiple wire strips through a connector interface 410.

[0048] The battery testing device 1000 provided in this embodiment is manufactured using the following steps:

[0049] First, a second connecting film layer 200 is laid out. Then, a copper foil raw material of the same form as the FPC, namely the panel 300, is selected and placed on top of the second connecting film layer 200. Next, a circular die is used to cut the copper foil into multiple strips 400 at certain intervals. After cutting the strips 400, the first connecting film layer 100 is connected above the panel 300. Then, a die-cutting process is used to cut multiple connector interfaces 410 on the first connecting film layer 100. The multiple connector interfaces 410 are located at the same end of the multiple strips 400, and the multiple connector interfaces 410 correspond one-to-one with the multiple strips 400 to expose the strips 400. Next, a die-cutting process is used to cut multiple first interfaces 110 on the first connecting film layer 100. Then, the NTC component 600 is pasted to the first interface 110, the nickel sheet 500 is pasted to the NTC component 600, and finally, the connector 800 is installed to the connector interface 410.

[0050] In summary, the battery testing device 1000 includes a panel 300, multiple linear guides 400, a first connecting film layer 100, and a second connecting film layer 200. The multiple linear guides 400 are all disposed on the panel 300, and are arranged side-by-side with intervals. The first connecting film layer 100, the panel 300, and the second connecting film layer 200 are stacked sequentially. The first connecting film layer 100 has multiple first interfaces 110, each corresponding to at least one linear guide 400. Any one of the first interfaces 110 exposes at least one linear guide 400, allowing the battery cell to connect to an external voltage or temperature acquisition device via the linear guide 400. The first connecting film layer 100 and the second connecting film layer 200 both fix the multiple linear guides 400 on the panel 300 and protect them. By providing the first interfaces 110, the linear guides 400 can be exposed and connected to an external battery cell to collect the battery cell's voltage or temperature for testing and monitoring. The above design simplifies the structure of the battery testing device 1000, saves processing time, and improves installation efficiency, while also providing some protection for the wiring harness 400. Furthermore, the battery testing device 1000 is universal and suitable for various battery packs of different sizes and specifications, eliminating the need for separate molds for each product and reducing production costs.

[0051] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery detection device, characterized by, include: Panel (300); Multiple line lines (400) are provided on the panel (300), and the multiple line lines (400) are arranged side by side and spaced apart; A first connecting film layer (100) and a second connecting film layer (200) are sequentially stacked. The first connecting membrane layer (100) has a plurality of first interfaces (110), each of the first interfaces (110) corresponding to at least one of the ribbon lines (400); any one of the first interfaces (110) is used to expose at least one of the ribbon lines (400), so that the battery cell can be connected to an external voltage or temperature acquisition device through the ribbon lines (400).

2. The battery detection apparatus according to claim 1, characterized by Multiple first interfaces (110) are spaced apart along the length direction of the ribbon line (400).

3. The battery detection apparatus according to claim 1, characterized by The battery testing device (1000) also includes a plurality of nickel plates (500). For each nickel plate (500), one end of the nickel plate (500) is connected to a ribbon cable (400) through the first interface (110), and the other end of the nickel plate (500) is used to connect to the battery cell.

4. The battery detection apparatus according to claim 3, characterized by The battery testing device (1000) further includes a plurality of NTC components (600), one end of each NTC component (600) being connected to the ribbon cable (400) via at least one of the first interfaces (110), and the other end of each NTC component (600) being connected to one end of at least one of the nickel sheets (500).

5. The battery detection apparatus according to claim 4, wherein The battery testing device (1000) also includes a plurality of length adjustment members (700), and each of the nickel sheet (500) and the NTC assembly (600) is provided with a length adjustment member (700), the length adjustment member (700) being used to make the end of the nickel sheet (500) located on the same side connected to the battery cell on the same horizontal line.

6. The battery detection apparatus according to any one of claims 1 to 5, characterized by The first interface (110) is made using a die-cutting process.

7. The battery detection apparatus according to any one of claims 1 to 5, characterized by The line (400) is a straight line structure and is made by circular die-cutting process.

8. The battery detection apparatus according to any one of claims 1 to 5, characterized by The first connecting membrane layer (100) has a plurality of connector interfaces (410), each of the plurality of connector interfaces (410) corresponds one-to-one with a plurality of ribbon lines (400), and the plurality of connector interfaces (410) are located at the same end of the plurality of ribbon lines (400); the connector interfaces (410) are made by die-cutting process.

9. The battery detection apparatus according to claim 8, wherein The battery testing device (1000) further includes a connector (800), which is connected to a plurality of the ribbon cables via the connector interface (410).

10. A battery pack, characterized by, The device includes the battery testing apparatus (1000) according to any one of claims 1-9 and a plurality of battery cells, each of the battery cells being connected to at least one of the ribbon cables (400) via the first interface (110).

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