Lithium battery integrated module device

Abstract

The utility model discloses a lithium battery integrated module device, which solves the problems of poor reusability, short service life and low energy density of the lithium battery module device in the prior art, and consists of a circuit integrated component and a battery cell integrated component, a signal contact end is tightly attached to each piece, a temperature sensing nickel piece and an acquisition nickel piece are arranged on the signal contact end, the temperature sensing nickel piece is integrated with the NTC thermistor on the basis of the acquisition nickel piece, the plurality of signal contact ends are located on the FPC, and the cell integrated assembly is provided with a plurality of cells connected with the pieces. According to the utility model, the reusability is enhanced, the ultrahigh energy density is realized, and the service life is prolonged to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, specifically providing a lithium battery integrated module device. Background Technology

[0002] With the rapid advancement of new energy power battery technology in the off-road sector, the variety of batteries on the market has increased significantly to meet the growing and diversified demands. Because different application scenarios have varying requirements for the voltage and capacity of power batteries, this differentiated demand has directly driven the substantial expansion and refinement of lithium battery pack product lines. From low-capacity, high-voltage battery packs suitable for light off-road equipment to high-capacity, high-power versions supporting the continuous high-intensity operation of heavy machinery, a wide array of lithium battery pack designs are designed to precisely adapt to the specific performance requirements of various new energy equipment, thereby propelling the entire industry towards greater efficiency and environmental friendliness.

[0003] Existing lithium battery modules mainly use cable ties to constrain the end plates, side plates, and battery pack, or structural adhesives to ensure fixation. For example, a "battery module" disclosed in Chinese patent literature, publication number CN108878702A, uses metal materials for the end plates, which reduces the safety performance of the lithium battery module, affects the range performance in low-temperature environments, and thus reduces the lifespan of the battery cells. The positioning, installation, and disassembly of each structure are difficult, increasing the difficulty of later maintenance and reducing the reusability of the battery module. Furthermore, the lithium battery module has poor plasticity, and the temperature measuring device occupies a large space, further affecting the energy density of the lithium battery module. Utility Model Content

[0004] To address the issues of poor reusability, low lifespan, and low energy density in existing lithium battery module devices, this invention provides a lithium battery integrated module device. Through optimized design, it enhances reusability, achieves ultra-high energy density, and extends lifespan to a certain extent.

[0005] The specific solution of this utility model is as follows.

[0006] A lithium battery integrated module device comprises a circuit integrated assembly and a cell integrated assembly. The circuit integrated assembly has several pads, each pad having a signal contact terminal attached to it. The signal contact terminal has a temperature-sensing nickel plate and a data acquisition nickel plate. The temperature-sensing nickel plate is integrated with an NTC thermistor based on the data acquisition nickel plate. The several signal contacts are located on an FPC. The cell integrated assembly has several cells connected to the pads.

[0007] This utility model discloses a lithium battery integrated module device, which is mainly composed of two simple parts: a cell integrated assembly and a circuit integrated assembly. The circuit integrated assembly connects to the cells using several tabs, accommodating the series and parallel connection requirements between cells. Furthermore, several signal contacts on the FPC (Flexible Printed Circuit) unify the output of electrical signals from each cell. The structural design of the signal contacts not only meets the temperature acquisition requirements of the cells but also saves space occupied by the temperature acquisition structure, facilitating subsequent installation and welding processes. This lithium battery integrated module device achieves ultra-high energy density.

[0008] Furthermore, the plurality of battery cells are arranged in a single row and are surrounded by an insulating shell. The insulating shell consists of a top cover, two end plates, and two side plates. Insulating sheets are glued between the end plates and the battery cells, and between the side plates and the battery cells. Insulating sheets are also glued to the bottom of the battery cells and between adjacent battery cells. The insulating sheets effectively prevent safety hazards caused by battery cell leakage, and the insulating shell further prevents safety hazards caused by battery cell leakage, ensuring the safety performance of the lithium battery integrated module device.

[0009] Furthermore, a heating film is provided on the inner side of the side panel, which is made of PI film and heating chip, and PI film and double-sided adhesive layered sequentially. Through the structural design of the heating film, the battery life performance of the lithium battery integrated module device is guaranteed under low temperature conditions.

[0010] Furthermore, the top of both end plates is provided with mounting holes for assembling positive and negative electrode brackets. The bottom of the positive and negative electrode brackets is provided with tapered buckles adapted to the mounting holes, and the top of the positive and negative electrode brackets is provided with buckle grooves for assembling positive and negative electrode sheaths. A threaded copper post is provided at the center of the positive and negative electrode brackets. The positive and negative electrode brackets are assembled on the top of the end plates by engaging the tapered buckles with the mounting holes.

[0011] Furthermore, the side plate is provided with a slot, and the two sides of the top cover are provided with two pairs of buckles that are adapted to the slot. Both the side plate and the end plate are provided with reinforcing ribs. The reinforcing ribs on the end plate are crisscrossed. The side plate is provided with rivet assembly holes on both sides in the length direction. The side plate is assembled with the end plate by rivets.

[0012] The reinforcing ribs on the side and end plates enhance the overall strength of the integrated battery cell assembly, effectively reducing deformation that may be caused by internal cell expansion. The top cover is secured to the side plates with snaps, and the end plates are secured to the side plates with rivets, ensuring sufficient structural stability for the lithium battery integrated module and facilitating installation, thus significantly improving assembly efficiency. The insulating outer shell, secured with rivets and snaps, clamps the internal battery cells, allowing multiple cells to be fixed together without the need for cable ties.

[0013] Furthermore, the FPC has a blister-formed cover and a blister tray on its upper and lower sides, respectively. The plurality of battery strips are arranged according to the series-parallel connection relationship between the battery cells and assembled on the blister tray. Each battery strip has a circular through-hole for welding to the battery cell terminal. The circular through-hole on the battery strip facilitates the subsequent welding process and prevents uneven contact between the battery strip and the battery cell terminal.

[0014] Furthermore, the battery pack includes a first end battery pack, a middle battery pack, and a second end battery pack. The second end battery pack and the first end battery pack are the negative and positive electrodes of the device, respectively, and are located at both ends of the blister tray. The middle battery pack connects the battery cells in series. The blister tray has the above three different specifications of battery packs arranged according to the series and parallel connections between the battery cells. By changing the number and arrangement of different battery cells, the lithium battery integrated module device can be compatible with various capacity and voltage configurations.

[0015] Furthermore, both the second end plate and the first end plate are provided with threaded through holes, and the threaded copper pillar is provided with threaded holes that are adapted to the threaded through holes.

[0016] Furthermore, the surface of the blister tray is provided with several cylindrical protrusions, and the blister sheet and the blister cover are provided with positioning and mounting holes that are adapted to the cylindrical protrusions. The blister tray and the blister cover are also provided with protrusions on the same side.

[0017] After the several tabs on the blister tray are soldered to the battery cell terminals, align the cylindrical protrusions on the blister tray with the cylindrical mounting holes on the blister cover, and then put on the blister cover to complete the production of the circuit integration component. The protrusions on the sides of the blister tray and the blister cover have a certain foolproof effect during the installation process.

[0018] The multiple positioning and mounting structures between the various components facilitate the positioning, installation, and disassembly of the lithium battery integrated module, which in turn facilitates the subsequent repair and maintenance of the battery module. This alleviates the technical problems of welding and riveting battery modules in existing technologies, which make subsequent modification and repair inconvenient, and simplifies the assembly process.

[0019] Furthermore, the FPC is internally wired according to the circuit relationships between the various battery cells. A connector is installed on the FPC, serving as the integrated output terminal of the device. An FR4 is positioned between the connector and the blister tray. The connector integrates signals collected from several signal contacts to meet the data acquisition requirements of the electronic control system. The FR4 installed between the connector and the blister tray is commonly used as a PCB substrate and possesses excellent flame retardancy.

[0020] Therefore, this utility model has the following beneficial effects:

[0021] (1) The battery cell integration module and the circuit integration module complement each other. By changing the number and arrangement of different battery cells inside the battery cell integration module, and using the battery cell connection to the battery cell to meet the series and parallel connection requirements between the battery cells, it can be compatible with a variety of capacity and voltage configurations, which improves the plasticity of the lithium battery integrated module device and paves the way for customized solutions for different needs.

[0022] (2) The structural design of the signal contact terminal on the FPC not only meets the temperature acquisition requirements of the battery cell but also saves space, facilitates subsequent installation and welding processes, and improves the energy density of the lithium battery integrated module device.

[0023] (3) The lithium battery integrated module device made by combining cell integrated components and circuit integrated components has improved the structure, making it compact and equipped with voltage and cell temperature acquisition and heating functions. This improves the energy density of the device, enhances safety performance and endurance in low temperature environments, thereby extending its service life. It is also easy to position, install and disassemble, which facilitates subsequent maintenance and improves reusability. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is an assembly diagram of a lithium battery integrated module device according to the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of a lithium battery integrated module device according to the present invention.

[0027] Figure 3 This is an exploded view of the battery cell integrated assembly of this utility model.

[0028] Figure 4 This is an assembly diagram of the battery cell integrated assembly of this utility model.

[0029] Figure 5 This is an exploded view of the circuit integration component of this utility model.

[0030] Figure 6 This is a schematic diagram of the structure of the FPC of this utility model.

[0031] Figure 7 This is a schematic diagram of the signal contact terminal of this utility model.

[0032] Figure 8This is an assembly drawing of the blister tray and blister cover of this utility model.

[0033] Figure 9 This is an exploded view of a lithium battery integrated module device according to the present invention.

[0034] In the diagram: 1. Circuit integrated component; 11. FPC; 111. Signal contact terminal; 1111. Acquisition nickel strip; 1112. Temperature sensing nickel strip; 112. Connector; 12. Bar; 121. Middle bar; 122. First end bar; 123. Second end bar; 124. Circular through hole; 125. Threaded through hole; 13. Blister tray; 131. Cylindrical protrusion; 14. Blister cover; 15. Positioning mounting hole; 16. Protrusion; 17. F R4, 2, Battery cell integrated assembly, 21, Battery cell, 211, Battery cell terminal, 22, Side plate, 221, Slot, 222, Rivet assembly hole, 223, Heating film, 224, Rivet, 23, End plate, 231, Mounting hole, 24, Top cover, 241, Buckle, 25, Insulating sheet, 26, Positive and negative electrode bracket, 261, Conical buckle, 262, Threaded copper pillar, 263, Buckle groove, 27, Positive and negative electrode sheath, 28, Reinforcing rib, 29, Glue. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] like Figure 1 The diagram shown is an assembly drawing of a lithium battery integrated module device according to this utility model. The lithium battery integrated module adopts a hexagonal square design, and the main body is composed of a cell integration component 2 and a circuit integration component 1. Figure 2 The diagram shows a structural schematic of a lithium battery integrated module device according to this utility model. The cell integration assembly 2 has a rectangular parallelepiped structure and houses several cells 21 arranged in a single row. The circuit integration assembly 1 is located above the cell integration assembly 2, has a plate-like structure, and is attached to the upper surface of the cell integration assembly 2.

[0037] like Figure 3The diagram shown is an exploded view of the battery cell integration assembly of this invention. The battery cell integration assembly 2 includes several battery cells 21 arranged in a single row, each battery cell 21 covered by an insulating shell. The insulating shell includes a top cover 24, two side plates 22, and two end plates 23. The end plates 23, side plates 22, and top cover 24 form a cuboid structure, tightly clamping the internal battery cells 21. The length of the top cover 24 can be set to any length. The number and arrangement of the battery cells 21 in the battery cell integration assembly 2 can be changed. By changing the number and arrangement of different battery cells 21 inside the battery cell integration assembly 2, and using a connector 12 to connect to the battery cells 21 to meet the series and parallel connection requirements between the cells, it can accommodate various capacity and voltage configurations, improving the flexibility of the lithium battery integration module and paving the way for customized solutions for different needs.

[0038] In a series of closely arranged cells 21 in a single row, an insulating sheet 25 is provided between adjacent cells 21. Figure 8 In this assembly, each battery cell 21 has adhesive applied to both sides in a "Z" shape, using the adhesive to fix the insulating sheet 25 between adjacent cells 21. Insulating sheets 25 are also provided on the inner sides of the end plate 23 and side plate 22; that is, insulating sheets 25 are also fixed between the end plate 23 and the battery cell 21, and between the side plate 22 and the battery cell 21, using adhesive. Additionally, insulating sheets 25 are also fixed to the bottom of several battery cells 21 using adhesive; that is, insulating sheets 25 are adhered to the bottom of the battery cell integrated assembly 2. The use of these multiple insulating sheets 25 effectively prevents safety hazards caused by leakage from the battery cells 21, thereby ensuring the safety performance of the lithium battery integrated module.

[0039] Because the performance of lithium batteries is significantly affected by temperature, especially at low temperatures, the electrochemical reaction rate inside the cell decreases, leading to problems such as reduced battery capacity, decreased output power, and reduced charging efficiency. Therefore, a heating film 223 is also provided on the side plate 22 of the lithium battery integrated module. The heating film 223 is made of PI film and heating chip, and PI film and double-sided adhesive are stacked sequentially. Two conspicuous white heating film lines extend from the heating film 223 to facilitate the installation of the control terminal wiring harness. When the lithium battery integrated module is under low temperature conditions, the heating film 223 provides the necessary heat to the lithium battery integrated module, thereby achieving a more suitable operating temperature range. Through the structural design of the heating film 223, the battery life and normal operation performance of the lithium battery integrated module are guaranteed under low temperature conditions.

[0040] The top of each of the two end plates 23 is provided with mounting holes 231 for positive and negative electrode supports 26. Below each positive and negative electrode support 26 is a tapered buckle 261 that mates with the mounting holes 231. By engaging the tapered buckles 261 below each positive and negative electrode support 26 with the mounting holes 231 on the top of the two end plates 23, the two positive and negative electrode supports 26 are fixed to the top of the two end plates 23. The center of each positive and negative electrode support 26 has a threaded copper post 262 with a threaded hole. The first end plate 122 and the second end plate 123 in the circuit integration assembly 1 are each provided with a threaded through hole 125 that mates with the threaded hole of the threaded copper post 262. Screws are sequentially inserted into the threaded through hole 125 and the threaded hole to fix the first end plate 122 to the threaded copper post 262 in the positive electrode support, and to fix the second end plate 123 to the threaded copper post 262 in the negative electrode support. Above the positive and negative pole bracket 26, there is also a snap-fit ​​groove 263 for installing the positive and negative pole sheath 27. The positive and negative pole sheath 27 is fixed to the positive and negative pole bracket 26 through the snap-fit ​​groove 263.

[0041] In a preferred embodiment, the positive electrode sheath is red and the negative electrode sheath is black. The positive electrode sheath is engraved with a "+" symbol, and the negative electrode sheath is engraved with a "-" symbol, making them easily distinguishable.

[0042] like Figure 4 The diagram shows the assembly of the battery cell integrated assembly of this utility model. The top cover 24 has two pairs of snap fasteners 241 on both sides. The top of each of the two side plates 22 has a slot 221 that mates with the snap fasteners 241 at both ends of the top cover 24. By snapping the snap fasteners 241 of the top cover 24 into the slots 221 of the two side plates 22, the top cover 24 is fixedly connected to the two side plates 22. Five rivet assembly holes 222 are evenly distributed at both ends of the side plates 22 along their length. Five rivet holes 222 that mate with the rivet assembly holes 222 are also evenly distributed at both ends of the end plates 23. The end plates 23 and the side plates 22 are fixedly connected by rivets 224, achieving precise assembly between the two side plates and the two end plates 23. The top cover 24 is fixed to the two side plates 22 by clips 241, and the two end plates 23 are fixed to the two side plates 22 by rivets 224. This ensures sufficient structural stability of the lithium battery integrated module and facilitates installation, effectively improving assembly efficiency. It also makes disassembly of the lithium battery integrated module easier, facilitating repair and maintenance, thereby enhancing its reusability. The insulating outer shell, secured by rivets 224 and clips 241, clamps the internal battery cells 21, allowing multiple cells 21 to be fixed without the need for cable ties. Three reinforcing ribs 28 are evenly distributed on the side plates 22, and crisscrossing reinforcing ribs 28 are provided on the end plates 23. The design of the reinforcing ribs 28 on the side plates 22 and end plates 23 enhances the overall strength of the battery cell integrated assembly 2 and effectively reduces deformation that may be caused by the expansion of the internal battery cells.

[0043] like Figure 5The diagram shown is an exploded view of the circuit integration assembly of this utility model. The circuit integration assembly 1 includes a blister tray 13 and a blister cover 14. The blister cover 14 is located above the blister tray 13, and the lower surface of the blister tray 13 is in close contact with the upper surface of the battery cell 21 in the battery cell integration assembly 2. Several pads 12 are installed on the blister tray 13, and the blister tray 13 has several receiving grooves for the pads 12, which facilitates the positioning and installation of the pads 12 and reduces the vibration or movement of the pads 12 to a certain extent. The several pads 12 are arranged according to the series and parallel relationship between the battery cells 21. The upper surface of each battery cell 21 has two battery cell terminals 211, which are the positive and negative terminals of the battery cell 21, respectively. Each pad 12 has a circular through hole 124, which is used to weld the pad 12 to the battery cell terminal 211 below it, preventing uneven contact between the pad 12 and the battery cell terminal 211. Figure 3 The medium-sized bus plates 12 are arranged in two rows, corresponding to the positions of the battery cells 21 below.

[0044] The circuit integration assembly 1 also includes an FPC 11, which is a single-sided board located between two rows of pads 12, with its lower surface in close contact with the upper surface of the blister tray 13. The FPC 11 has several signal contact terminals 111 resting on the surface of the pads 12, and the internal wiring of the FPC 11 is arranged according to the circuit relationship between the battery cells 21.

[0045] The battery pack 12 includes three different specifications: a middle battery pack 121, a first end battery pack 122, and a second end battery pack 123, with only one first end battery pack 122 and one second end battery pack 123. The battery cells 21 are connected in series via the middle battery pack 121, meaning that one middle battery pack 121 connects to the positive terminal of one battery cell and the negative terminal of another. The first end battery pack 122 and the second end battery pack 123 are respectively located at both ends of the blister tray 13. The first end battery pack 122 is the positive terminal of the lithium battery integrated module, and the second end battery pack 123 is the negative terminal of the lithium battery integrated module; that is, the first end battery pack 122 connects to the positive terminal of the battery cell, and the second end battery pack 123 connects to the negative terminal of the battery cell. In the above structure, the battery cells 21 in the battery cell integrated assembly 2 are arranged in series, with the positive terminal of each battery cell connected to the negative terminal of the next battery cell. Several battery strips 12 are arranged according to the series-parallel relationship between the battery cells 21 as described above. The FPC 11 is wired according to the circuit relationship between the battery cells 21 as described above, and the battery strips are soldered to the battery cell terminals. This arrangement can increase the total voltage of the lithium battery integrated module while keeping the total capacity unchanged, making it suitable for scenarios that require higher operating voltage.

[0046] In a preferred embodiment, several cells 21 in the cell integration assembly 2 are arranged in parallel, with the positive terminals of all cells connected together and the negative terminals of all cells connected together. Several electrode pads 12 are placed according to the aforementioned series-parallel relationship between the cells 21. Wiring is performed internally within the FPC 11 according to the aforementioned circuit relationship between the cells 21, and the electrode pads are soldered to the cell terminals. This arrangement can increase the total capacity of the lithium battery integration module while maintaining a constant total voltage, making it suitable for devices requiring high current output or long-term operation.

[0047] In another preferred embodiment, the cells 21 in the cell integration assembly 2 are arranged in a series-parallel combination. This arrangement combines the advantages of series and parallel connections. The cells are first connected in parallel to increase capacity, and then these parallel groups are connected in series to increase voltage; or vice versa, the cells are first connected in series to increase voltage, and then the series groups are connected in parallel to increase capacity. Several electrode pads 12 are placed according to the aforementioned series-parallel relationship between the cells 21. Wiring is performed inside the FPC 11 according to the aforementioned circuit relationship between the cells 21, and the electrode pads are soldered to the cell terminals. This arrangement is very flexible, allowing for customization of the lithium battery integration module according to the required voltage and capacity, and the customization process is extremely simple. By changing the number and arrangement of different cells 21, the lithium battery integration module can be compatible with various capacity and voltage configurations.

[0048] The upper surface of the blister tray 13 has several cylindrical protrusions 131, with two cylindrical protrusions 131 located within the receiving groove of each blister pack. Both the blister pack 12 and the blister cover 14 have positioning mounting holes 15, with two positioning mounting holes 15 on each blister pack 12. Through the cooperation of the positioning mounting holes 15 and the cylindrical protrusions 131, the blister pack 12 and the blister cover 14 are assembled onto the blister tray 13.

[0049] In a preferred embodiment, the upper surface of the blister cover 14 of the circuit integration component 1 is marked with the model number of the lithium battery integration module and the positive and negative terminals, wherein the positive terminal of the blister cover 14 is engraved with a "+" symbol and the negative terminal is engraved with a "-" symbol.

[0050] like Figure 6 The diagram shown is a structural schematic of the FPC of this utility model. Figure 7The diagram shows the structure of the signal contact terminal of this utility model. Several signal contact terminals 111 on the FPC11 rest on the surface of the plate 12. Each signal contact terminal 111 includes a data acquisition nickel plate 1111 and a temperature-sensing nickel plate 1112. The temperature-sensing nickel plate 1112 is integrated with an NTC thermistor based on the data acquisition nickel plate 1111. The FPC11 also has a connector 112, which is the integrated output terminal of the module, integrating the signals acquired by the several signal contact terminals 111 to meet the data acquisition requirements of the electronic control system. An FR417 is installed between the connector 112 and the blister tray 13. FR417 is commonly used as a PCB substrate and has excellent flame retardancy.

[0051] like Figure 8 The diagram shows the assembly of the blister tray and blister cover of this utility model. After the several tabs 12 on the blister tray 13 are welded to the battery cell terminals 211, the cylindrical protrusions 131 on the blister tray 13 are aligned with the cylindrical mounting holes on the blister cover 14, and then the blister cover 14 is placed on top to complete the fabrication of the circuit integration component 1. A protrusion 16 is provided on the same side of the blister tray 13 and the blister cover 14. During the installation of the blister tray 13 and the blister cover 14, the side protrusion 16 provides a certain degree of error prevention.

[0052] like Figure 9The image shown is an exploded view of a lithium battery integrated module device according to this utility model. The lithium battery integrated module is mainly composed of two parts: a cell integrated assembly 2 and a circuit integrated assembly 1, simply assembled together. The circuit integrated assembly 1 is located above the cells in the cell integrated assembly 2 and below the upper cover 24 of the cell integrated assembly 2. The upper cover 24 provides a more stable connection between the circuit integrated assembly 1 and the cell integrated assembly 2, reducing the possibility of damage to the lithium battery integrated module. Furthermore, the relatively short length of the upper cover 24 reduces its impact on heat dissipation of the lithium battery integrated module. The insulating shell and insulating sheet 25 in the cell integrated assembly 2 prevent the safety hazard of cell leakage to a certain extent, improving the safety performance of the lithium battery integrated module. The cell integration assembly 2 can accommodate various capacity and voltage configurations by changing the number and arrangement of different internal cells. The circuit integration assembly 1 can accommodate the series and parallel connection requirements between cells by using several pads 12 connected to the cells. The electrical signals of each cell are uniformly led out through several signal contact terminals 111 provided on the FPC 11. The structural design of the signal contact terminals 111 not only meets the temperature acquisition requirements of the cells but also saves space occupied by the temperature acquisition structure, facilitating subsequent installation and welding processes. When assembling the lithium battery integrated module, the cells are first arranged reasonably according to the voltage and capacity requirements of the lithium battery integrated module, and then the cell integration assembly 2 is assembled. The lithium battery integrated module in this solution has excellent flexibility, is backward compatible with various capacity and voltage configurations, and achieves ultra-high energy density. The multiple positioning and mounting structures between the various components facilitate the positioning, installation, and disassembly of the lithium battery integrated module, which in turn facilitates the subsequent repair and maintenance of the battery module. This alleviates the technical problems of welding and riveting battery modules in existing technologies, which make subsequent modification and repair inconvenient, and simplifies the assembly process.

[0053] The lithium battery integrated module device of this utility model has the following advantages. It employs a cell integrated assembly 2 and a circuit integrated assembly 1 that complement each other. By changing the number and arrangement of different cells within the cell integrated assembly 2, and using a connector 12 to connect to the cells to accommodate series and parallel connections, it can accommodate various capacity and voltage configurations, improving the versatility of the lithium battery integrated module device and paving the way for customized solutions for different needs. The structural design of the signal contact terminal 111 on the FPC 11 not only meets the temperature acquisition requirements of the cells but also saves space, facilitating subsequent installation and welding processes, while also improving the energy density of the device. The lithium battery integrated module device made by combining the cell integrated assembly 2 and the circuit integrated assembly 1 has an improved structure, making it compact and capable of acquiring voltage and cell temperature as well as heating functions. This improves the energy density of the device, enhances safety performance and endurance in low-temperature environments, thereby extending its service life. Furthermore, it facilitates positioning, installation, and disassembly, simplifying subsequent maintenance and improving reusability.

[0054] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A lithium battery integrated module device, characterized in that, It consists of a circuit integration component and a battery cell integration component. The circuit integration component has several pads, each pad has a signal contact terminal attached to it, and the signal contact terminal has a temperature sensing nickel plate and a data acquisition nickel plate. The temperature sensing nickel plate is integrated with an NTC thermistor based on the data acquisition nickel plate. Several signal contact terminals are located on the FPC. The battery cell integration component has several battery cells connected to the pads.

2. The lithium battery integrated module device according to claim 1, characterized in that, The plurality of battery cells are arranged in a single row and are covered by an insulating shell. The insulating shell consists of a top cover, two end plates, and two side plates. Insulating sheets are glued between the end plates and the battery cells, and between the side plates and the battery cells. Insulating sheets are also glued to the bottom of the battery cells and between adjacent battery cells.

3. The lithium battery integrated module device according to claim 2, characterized in that, The inner side of the side panel is provided with a heating film made of PI film, heating chip and PI film and double-sided adhesive layered in sequence.

4. A lithium battery integrated module device according to claim 2, characterized in that, The top of the two end plates is provided with mounting holes for mounting positive and negative electrode brackets. The bottom of the positive and negative electrode brackets is provided with tapered buckles that fit the mounting holes. The top of the positive and negative electrode brackets is provided with buckle grooves for mounting positive and negative electrode sheaths. The center of the positive and negative electrode brackets is provided with threaded copper pillars.

5. A lithium battery integrated module device according to any one of claims 2-4, characterized in that, The side plate is provided with a slot, and the two sides of the top cover are provided with two pairs of buckles that are adapted to the slot. The side plate and the end plate are provided with reinforcing ribs. The reinforcing ribs on the end plate are crisscrossed. The side plate is provided with rivet assembly holes on both sides in the length direction. The side plate is assembled with the end plate by rivets.

6. A lithium battery integrated module device according to claim 4, characterized in that, The FPC has a blister cover and a blister tray on its upper and lower sides, respectively. The plurality of pads are arranged according to the series and parallel relationship between the battery cells and assembled on the blister tray. Each pad is provided with a circular through hole for welding to the battery cell terminal.

7. A lithium battery integrated module device according to claim 6, characterized in that, The battery pack includes a first end battery pack, a middle battery pack, and a second end battery pack. The second end battery pack and the first end battery pack are the negative and positive electrodes of the device, respectively, and are located at both ends of the blister tray. The middle battery pack connects the battery cells in series.

8. A lithium battery integrated module device according to claim 7, characterized in that, Both the second end plate and the first end plate are provided with threaded through holes, and the threaded copper pillar is provided with threaded holes that are adapted to the threaded through holes.

9. A lithium battery integrated module device according to claim 6, characterized in that, The surface of the blister tray is provided with several cylindrical protrusions, and the blister sheet and the blister cover are provided with positioning and mounting holes that are adapted to the cylindrical protrusions. The blister tray and the blister cover are also provided with protrusions on the same side.

10. A lithium battery integrated module device according to any one of claims 7-9, characterized in that, The FPC is internally wired according to the circuit relationship between the several cells. The FPC is equipped with a connector, which is the integrated output terminal of the device. An FR4 is provided between the connector and the blister tray.

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