Single cell and battery pack

Abstract

The utility model discloses a single battery and battery pack, single battery has mutually perpendicular first direction, second direction, and single battery includes casing, electrode assembly and acquisition module, and the casing is square casing, and the casing has the first side wall in first direction and the second side wall in second direction, and the size of second side wall in first direction is less than the size of first side wall in second direction, electrode assembly is located in the casing, acquisition module is electrically connected with electrode assembly, and acquisition module sets up in the side of second side wall away from electrode assembly. The design of the application makes full use of the space of the side of the battery cell, avoids the space congestion caused by the acquisition module setting in the area such as the top of the casing, is favorable to the compact design of the overall structure of the battery cell, can reserve more reasonable layout space for other components (such as cooling system, connecting circuit etc.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a single cell battery and a battery pack. Background Technology

[0002] To monitor batteries (e.g., temperature sampling, voltage sampling, overcurrent protection, etc.), engineers designed a Battery Management System (BMS). With technological advancements, wireless BMS technology has become increasingly mature. Wireless BMS primarily transmits battery information via wireless communication technology, which not only improves communication convenience but also significantly reduces the cost of wiring harnesses.

[0003] In related wireless BMS technologies, the wireless BMS module is installed on top of the battery cell, which leads to crowded space on top of the battery cell, limiting the flexibility of the overall spatial layout of the battery cell. Moreover, the top installation method will interfere with the layout of other components (such as cooling systems, safety devices, etc.), affecting the realization of the entire battery cell function. Utility Model Content

[0004] The main purpose of this utility model is to propose a single battery cell and battery pack, which aims to solve the technical problems of space congestion and interference with other components caused by the installation of the existing wireless BMS module on the top of the battery cell.

[0005] To achieve the above objectives, this utility model proposes a single-cell battery having a first direction and a second direction that are perpendicular to each other, comprising:

[0006] The housing is a square housing, and the housing has a first sidewall located in the first direction and a second sidewall located in the second direction, wherein the dimension of the second sidewall in the first direction is smaller than the dimension of the first sidewall in the second direction;

[0007] An electrode assembly, wherein the electrode assembly is disposed within the housing;

[0008] A data acquisition module is electrically connected to the electrode assembly and is disposed on the side of the second sidewall away from the electrode assembly.

[0009] In some embodiments, the single battery cell further has a third direction perpendicular to both the first direction and the second direction, and the housing has a top wall located in the third direction;

[0010] The single cell also includes an electrode assembly, which includes a first electrode and a second electrode. The first electrode and the second electrode have opposite polarities and are electrically connected to the acquisition module. At least one of the first electrode and the second electrode is insulated from the top wall.

[0011] In some embodiments, the first electrode post and the second electrode post are both disposed through the top wall and partially located on the side of the housing away from the electrode assembly. The acquisition module includes an acquisition unit, a first acquisition line and a second acquisition line. The acquisition unit is disposed on the second side wall. One end of the first acquisition line is electrically connected to the acquisition unit, and the other end of the first acquisition line is electrically connected to the first electrode post. One end of the second acquisition line is electrically connected to the acquisition unit, and the other end of the second acquisition line is electrically connected to the second electrode post.

[0012] In some embodiments, the acquisition module further includes a first adhesive layer disposed between the first acquisition line and the second sidewall and / or the top wall; and / or,

[0013] The acquisition module further includes a second adhesive layer, which is disposed between the second acquisition line and the second sidewall and / or the top wall; and / or

[0014] The first electrode and the second electrode are spaced apart along the second direction. The second acquisition line is located on one side of the first electrode or the second electrode in the first direction and is on the top wall. The second acquisition line and the first acquisition line are spaced apart in the first direction.

[0015] In some embodiments, the single cell further includes a cell substrate disposed on the second sidewall, and the acquisition unit is disposed on the cell substrate.

[0016] In some embodiments, the acquisition module further includes a wireless transceiver unit disposed on the second side wall, and the wireless transceiver unit is communicatively connected to the acquisition unit.

[0017] This utility model also provides a battery pack, including:

[0018] Box;

[0019] Multiple individual battery cells are disposed within the housing.

[0020] In some embodiments, the battery pack further includes an integrated substrate, the integrated substrate being connected to the second sidewalls of a plurality of individual cells, and the acquisition module of each individual cell being disposed on the integrated substrate;

[0021] Each of the individual battery cells has a wireless transceiver unit in its acquisition module, and the wireless transceiver unit is located on the integrated substrate; or, the battery pack further includes a wireless transceiver unit located on the integrated substrate, and the wireless transceiver unit is communicatively connected to the acquisition modules of all the individual battery cells.

[0022] In some embodiments, the battery pack further includes a plurality of unit substrates, each unit substrate being disposed on the second sidewall of the corresponding single cell, and the acquisition module of each single cell being disposed on the corresponding unit substrate;

[0023] Each of the acquisition modules is equipped with a wireless transceiver unit, which is located on the corresponding unit substrate.

[0024] In some embodiments, the individual cells are arranged along the first direction, the integrated substrate is connected to a plurality of individual cells arranged in rows along the first direction, the integrated substrate has a plurality of cells spaced apart along the second direction, and the individual cells have at least two rows along the second direction.

[0025] This application utilizes the external side space of the individual battery cells by placing the acquisition module on the side of the second sidewall away from the electrode assembly, i.e. outside the housing, and the dimension of the second sidewall in the first direction is smaller than the dimension of the first sidewall in the second direction. This does not affect the stacking of individual battery cells in the first direction, avoids the space congestion caused by placing it in the top area inside the housing, and is conducive to the compact design of the overall structure of the individual battery cells. It can reserve more reasonable layout space for other components (such as cooling systems, connecting lines, etc.), and improve the energy density and space utilization of the individual battery cells. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a single-cell battery according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of an embodiment of the battery pack of this utility model.

[0028] Explanation of icon numbers:

[0029]

[0030]

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The solutions in 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 a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] Please refer to Figure 1 One embodiment of this application proposes a single-cell battery 100 having a first direction X and a second direction Y that are perpendicular to each other. The single-cell battery 100 includes a housing 10, an electrode assembly, and a data acquisition module 30. The housing 10 is a square housing 10, and the housing 10 has a first sidewall 11 located in the first direction X and a second sidewall 12 located in the second direction Y. The size of the second sidewall 12 in the first direction X is smaller than the size of the first sidewall 11 in the second direction Y. The electrode assembly is disposed inside the housing 10. The data acquisition module 30 is electrically connected to the electrode assembly, and the data acquisition module 30 is disposed on the side of the second sidewall 12 away from the electrode assembly.

[0037] The housing 10 serves as the physical carrier of the single battery cell 100, accommodating and protecting internal components such as electrode assemblies. The square structure of the housing 10 facilitates the stacking and assembly of batteries to form a battery module. Its accommodating cavity provides installation space for the electrode assemblies, while also helping to fix and protect the internal structure, preventing external factors from interfering with or damaging the electrode assemblies.

[0038] The electrode assembly is the core component of a battery that enables energy storage and release. It stores and transfers charge through internal chemical reactions, thus enabling the battery's charging and discharging functions. During charging, the electrode assembly converts externally input electrical energy into chemical energy for storage; during discharging, it converts chemical energy back into electrical energy for output, powering external devices.

[0039] The main function of the data acquisition module 30 is to collect relevant parameters of the individual battery cells 100, such as voltage and current, in order to monitor the battery status in real time. By analyzing these parameters, it is possible to determine whether the battery is in normal working condition, promptly identify potential battery problems such as overvoltage and overcurrent, provide accurate data support for the battery management system, and ensure the safe operation and performance optimization of the battery.

[0040] In this embodiment, the acquisition module 30 is installed on the side of the second sidewall 12 away from the electrode assembly, i.e., outside the housing 10, without occupying the internal space of the housing 10. This allows for a more rational arrangement of the electrode assembly within the housing 10's accommodating cavity, improving the integration of the electrode assembly and thus increasing the battery capacity. Furthermore, compared to the space congestion caused by traditional top-mounted acquisition module 30 installations, this application moves the acquisition module 30 to the second sidewall 12 of the cell, freeing up top space and providing more space and flexibility for the layout of other components such as cooling system pipes and safety devices. This helps optimize the overall cell structure design and improves the energy density and space utilization of the single battery cell 100.

[0041] Since the size of the second sidewall 12 in the first direction X is smaller than the size of the first sidewall 11 in the second direction Y, the second sidewall 12 is the width side of a single battery cell, or the small side, while the first sidewall 11 is the length side, or the large side. When multiple single batteries are grouped and assembled into a battery pack in the box, the single batteries are usually stacked and arranged in rows and groups along the first direction X. Placing the acquisition module 30 on the second sidewall 12 will not affect the grouping of the single batteries.

[0042] In some embodiments, the single cell 100 further has a third direction Z that is perpendicular to both the first direction X and the second direction Y, and the housing 10 has a top wall 13 located on the third direction Z;

[0043] The single cell 100 also includes a terminal assembly 40, which includes a first terminal 41 and a second terminal 42. The first terminal 41 and the second terminal 42 have opposite polarities and are electrically connected to the acquisition module 30. At least one of the first terminal 41 and the second terminal 42 is insulated from the top wall 13.

[0044] The third direction Z is perpendicular to the first direction X and the second direction Y, establishing a complete three-dimensional spatial coordinate system for the single cell 100 and clarifying the positional relationships of the components of the single cell 100 in space. The top wall 13, as the boundary in the third direction Z, not only provides physical enclosure and protection for the top of the single cell 100 but also provides a fixed foundation for the installation of components such as the electrode assembly 40. Furthermore, the presence of the top wall 13 helps maintain the overall structural stability of the single cell 100, dispersing stress and protecting the internal electrode assembly when subjected to external pressure or impact.

[0045] The first electrode 41 and the second electrode 42 are key components connecting the battery to the external circuit, and they function as both input and output of electrical energy. During discharge, the electrical energy converted from the chemical energy generated by the electrode assembly is transferred to the external load; during charging, electrical energy from the external power source is introduced into the electrode assembly for storage. Their opposite polarities create a potential difference, driving the current flow.

[0046] In the design of the single cell 100 in this embodiment, at least one of the first terminal 41 and the second terminal 42 is insulated from the top wall 13. The top wall 13 can be made of conductive or non-conductive material as needed. When the top wall 13 is non-conductive, the insulated terminal can improve signal purity and prevent accidental conduction. When the top wall 13 is conductive, the non-insulated terminal can serve as an electrical connection node to achieve grounding or current conduction.

[0047] The first electrode 41 and the second electrode 42 are electrically connected to the acquisition module 30 to conduct and output the electrical energy generated by the electrode assembly and to feed back the voltage status information of the battery. The acquisition module 30 can accurately determine the charging and discharging process, state of charge or health status of the battery by monitoring parameters such as the voltage difference and current between the first electrode 41 and the second electrode 42 and combining them with the status data of the electrode assembly, thus providing more comprehensive data support for the battery management system.

[0048] Optionally, both the first pole post 41 and the second pole post 42 include a pole body and a coating. The coating is arranged around the outer periphery of the pole body. The pole body passes through the top wall 13 and the coating is located between the pole body and the top wall 13. The acquisition module 30 is electrically connected to the pole body, which will not be described in detail here.

[0049] In some embodiments, the first electrode post 41 and the second electrode post 42 are both disposed through the top wall 13 and partially located on the side of the housing 10 away from the electrode assembly. The acquisition module 30 includes an acquisition unit, a first acquisition line 32 and a second acquisition line 33. The acquisition unit is disposed on the second side wall 12. One end of the first acquisition line 32 is electrically connected to the acquisition unit, and the other end of the first acquisition line 32 is electrically connected to the first electrode post 41. One end of the second acquisition line 33 is electrically connected to the acquisition unit, and the other end of the second acquisition line 33 is electrically connected to the second electrode post 42.

[0050] The design of the first terminal 41 and the second terminal 42 penetrating the top wall 13 makes them direct interfaces for connecting the battery to external circuits. In series or parallel battery pack applications, the terminals can quickly establish electrical connections between batteries, forming a stable current transmission path. The top wall 13 supports and fixes the penetrating portions of the terminals, ensuring reliable electrical connections even under frequent insertion / removal and vibration environments. It also helps prevent the terminals from shifting or being damaged by external forces, maintaining the overall stability of the battery structure.

[0051] The acquisition unit is connected to the first terminal 41 and the second terminal 42 via the first acquisition line 32 and the second acquisition line 33, respectively, to acquire electrical signal data such as voltage and current at the first terminal 41 and the second terminal 42 in real time. When the single battery 100 is working, the electrical energy generated by the electrode assembly is transmitted to an external load or receives external charging through the terminals. During this process, the acquisition lines transmit the changes in electrical signals on the terminals to the acquisition unit. After processing and analyzing the signals, the acquisition unit provides accurate battery operating status data to the battery management system, so as to achieve effective monitoring and management of the single battery 100 and ensure the safety and stability of the single battery 100 during charging and discharging.

[0052] In this embodiment, the design of the first terminal 41 and the second terminal 42 penetrating the top wall 13 and the acquisition module 30 partially located outside the housing 10 allows operators to more easily access the first terminal 41, the second terminal 42, and the acquisition module 30 during installation and maintenance. This eliminates the need to disassemble the main components inside the battery to perform operations such as connecting the first terminal 41 and the second terminal 42, inspecting the first acquisition line 32 and the second acquisition line 33, and replacing the acquisition unit, significantly reducing the difficulty and cost of installation and maintenance. Furthermore, the direct connection of the first acquisition line 32 to the first terminal 41 and the direct connection of the second acquisition line 33 to the second terminal 42 enables more direct and accurate acquisition of electrical signals, avoiding signal attenuation and interference caused by too many intermediate links.

[0053] In some embodiments, the acquisition module 30 further includes a first adhesive layer disposed between the first acquisition line 32 and the second sidewall 12 and / or the top wall 13; and / or,

[0054] The acquisition module 30 also includes a second adhesive layer, which is disposed between the second acquisition line 33 and the second side wall 12 and / or the top wall 13; and / or,

[0055] The first electrode post 41 and the second electrode post 42 are spaced apart along the second direction Y. The second acquisition line 33 is located on one side of the first electrode post 41 or the second electrode post 42 in the first direction X and on the top wall 13. The second acquisition line 33 and the first acquisition line 32 are spaced apart along the first direction X.

[0056] The first adhesive layer and the second adhesive layer can be made of materials with high adhesion and good weather resistance (such as acrylic adhesive, silicone, etc.), which can firmly adhere the first acquisition line 32 and the second acquisition line 33 to the surface of the second side wall 12 and / or the top wall 13, preventing the first acquisition line 32 and the second acquisition line 33 from shifting due to factors such as vibration and temperature changes during long-term use of the single cell 100, and ensuring a reliable connection between the acquisition line and the terminal post and the acquisition unit.

[0057] The first pole 41 and the second pole 42 are spaced apart along the second direction Y. The second acquisition line 33 is distributed on the top wall 13 at intervals with the first acquisition line 32 along the first direction X. This spatially staggered layout effectively increases the distance between the second acquisition line 33 and the first acquisition line 32, making the wiring more regular, reducing the electromagnetic coupling effect between them, reducing mutual electromagnetic interference, making the electrical signals transmitted by the acquisition lines purer and more accurate, and improving the data acquisition accuracy of the acquisition module 30.

[0058] In some embodiments, the single cell 100 further includes a unit substrate 50, which is disposed on the second sidewall 12, and the acquisition unit is disposed on the unit substrate 50.

[0059] The unit substrate 50 serves as the mounting carrier for the acquisition unit, fixed to the second sidewall 12 of the single cell 100, thus forming a stable architecture for the acquisition module 30. The acquisition unit is mounted on the unit substrate 50 and connected to the first electrode 41 and the second electrode 42 penetrating the top wall 13 via the first acquisition line 32 and the second acquisition line 33, thereby acquiring electrical signals such as voltage and current at the electrode in real time.

[0060] In this embodiment, the unit substrate 50 provides a standard mounting plane for the acquisition unit, ensuring accurate positioning of the acquisition unit and making the connection of the acquisition lines more stable and reliable. This ensures that the acquisition module 30 can continuously and accurately acquire the operating status data of the individual battery 100 and transmit it to the battery management system. Simultaneously, the combination of the first adhesive layer, the second adhesive layer for fixing the acquisition lines, and the optimized acquisition line layout further reduces interference from external factors on signal transmission, ensuring that the battery management system can efficiently manage the battery based on accurate data and maintain the safety and stability of the battery charging and discharging process.

[0061] As an integrated mounting carrier, the unit substrate 50 allows for the pre-installation of the acquisition unit and related components during battery production, forming a standardized sub-module. This module is then installed onto the second sidewall 12 of the battery, significantly simplifying the installation process and improving production efficiency. During later maintenance, if the acquisition unit malfunctions, the unit substrate 50 can be directly disassembled for inspection and replacement, eliminating the need for complex disassembly of the entire acquisition module 30 and reducing maintenance difficulty and cost.

[0062] Furthermore, the unit substrate 50 can be made of a high-strength, well-insulated material (such as a glass fiber reinforced epoxy resin board) to provide a stable mounting platform for the acquisition unit. It can be firmly installed on the second side wall 12 by welding, screw fixing or bonding, etc., to stably position the acquisition unit and prevent the acquisition unit from shifting or loosening during battery vibration and shaking, ensuring that the connection between the acquisition unit and the acquisition line is always in the best condition and maintaining the normal operation of the acquisition module 30.

[0063] In some embodiments, the acquisition module 30 further includes a wireless transceiver unit, which is disposed on the second side wall 12 and is communicatively connected to the acquisition unit.

[0064] The wireless transceiver unit can be equipped with a built-in wireless communication chip and antenna, and has the ability to transmit and receive high-frequency signals. It can quickly and stably send the battery status data (such as voltage, current and other information) processed by the acquisition unit to the target device in the form of wireless signals, and at the same time receive control commands from the outside to realize two-way data communication.

[0065] In this embodiment, the wireless transceiver unit eliminates the constraints of traditional wired connections, freeing the individual battery 100 from limitations imposed by cable length, routing, and layout in data transmission. This enables free data transmission and interaction, both within the complex internal space of the battery pack 200 and during subsequent expansion and reconfiguration of the battery pack 200.

[0066] Optionally, the wireless transceiver unit is disposed on the unit substrate 50.

[0067] Please refer to Figure 2 This application also provides a battery pack 200, including a housing and a plurality of individual batteries 100, wherein the individual batteries 100 are disposed within the housing. Since the battery pack 200 adopts all the technical solutions of all the embodiments of the individual batteries 100 described above, the battery pack 200 of this utility model also has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0068] In some embodiments, the battery pack 200 further includes an integrated substrate 201, which connects to the second sidewalls 12 of a plurality of individual cells 100, and the acquisition module 30 of each individual cell 100 is disposed on the integrated substrate 201.

[0069] Each individual battery cell 100 has a data acquisition module 30 equipped with a wireless transceiver unit, which is located on the integrated substrate 201; or, the battery pack 200 also includes a wireless transceiver unit located on the integrated substrate 201, which is communicatively connected to the data acquisition modules 30 of all individual batteries 100.

[0070] In the battery pack 200 system, the integrated substrate 201 serves as the core connection carrier, firmly connecting the second sidewalls 12 of multiple individual battery cells 100. This integrates the acquisition modules 30 and wireless transceiver units of multiple individual battery cells 100, replacing the traditional distributed layout. This significantly reduces the internal space occupied by the battery pack 200, making the battery pack 200 structure more compact. Simultaneously, it reduces unnecessary connecting cables, optimizes the internal wiring of the battery pack 200, and improves overall integration. This contributes to the miniaturization and lightweight design of the battery pack 200, meeting the space- and weight-sensitive requirements of electric vehicles, portable energy storage devices, and other applications.

[0071] When each individual battery cell 100 has a wireless transceiver unit (distributed mode) in its acquisition module 30, the acquisition unit of each individual battery cell 100 first completes the acquisition and processing of battery status data on the unit substrate 50, and then transmits the data to the corresponding wireless transceiver unit on the integrated substrate 201. These wireless transceiver units transmit the data to the battery management system based on wireless communication protocols, using independent channels or time-division multiplexing.

[0072] In this embodiment, each wireless transceiver unit is only responsible for the data transmission of its corresponding single battery cell 100. The communication parameters can be flexibly adjusted according to the specific needs of the single battery cell 100 (such as data volume and transmission priority) to achieve refined data management. At the same time, each unit is independent of the others. If one unit fails, it will not affect the data transmission of other single batteries cell 100, thus improving the system's fault tolerance.

[0073] When the wireless transceiver unit is located on the integrated substrate 201 and communicates with the acquisition module 30 of all individual batteries 100 (centralized mode), the data processed by the acquisition unit of each individual battery 100 is transmitted to the unified wireless transceiver unit on the integrated substrate 201 through the acquisition line or internal bus. After integrating all the data, the unit encodes and modulates it and sends it to the battery management system in the form of a wireless signal.

[0074] In this embodiment, a single wireless transceiver unit integrates data from all individual battery cells 100. Through multi-channel data processing technologies (such as frequency division multiplexing and code division multiplexing), it efficiently distinguishes and transmits data from different batteries, reducing wireless communication resource consumption and lowering system complexity and power consumption. Simultaneously, it facilitates unified management and control of the entire battery pack 200 by the battery management system.

[0075] In summary, the distributed wireless transceiver unit mode offers strong fault isolation, as the failure of a single wireless transceiver unit does not affect the overall operation, facilitating rapid location and replacement of faulty components; in the centralized mode, the unified wireless transceiver unit reduces the number of faulty nodes and lowers the system failure rate.

[0076] In some embodiments, the battery pack 200 further includes a plurality of unit substrates 50, each unit substrate 50 being disposed on the second sidewall 12 of the corresponding single cell 100, and the acquisition module 30 of each single cell 100 being disposed on the corresponding unit substrate 50.

[0077] Each acquisition module 30 is equipped with a wireless transceiver unit, which is located on the corresponding unit substrate 50.

[0078] In the battery pack 200 system, multiple unit substrates 50 are respectively mounted on the second sidewall 12 of the corresponding individual battery cells 100, forming independent data acquisition sub-modules. After completing the acquisition and processing of data such as voltage and current on the unit substrate 50, the acquisition unit of each individual battery cell 100 transmits the signal to the wireless transceiver unit on the same substrate. Each wireless transceiver unit synchronously sends the data to the battery management system based on protocols such as Bluetooth and ZigBee.

[0079] In this embodiment, the distributed unit substrate 50 design makes the acquisition and communication systems of each individual battery cell 100 independent, so that the failure of a single module does not affect the operation of other batteries. Moreover, the wireless transceiver unit is integrated into the second sidewall 12, which communicates with the acquisition unit nearby, shortening the signal transmission path and reducing power consumption.

[0080] Furthermore, each unit substrate 50 may also be disposed on the unit substrate 50 of the corresponding single cell 100.

[0081] In some embodiments, individual battery cells 100 are arranged along a first direction X, and an integrated substrate 201 is connected to a plurality of individual battery cells 100 arranged in a row along the first direction X. The integrated substrate 201 has a plurality of cells spaced apart along a second direction Y, and the individual battery cells 100 have at least two rows along the second direction Y.

[0082] The integrated substrate 201, made of high-strength composite material, connects multiple rows of individual cells 100 in an array, providing stable physical support for each row of cells 100 and enhancing the overall structural strength and deformation resistance of the battery pack 200. When subjected to external impact or vibration, the integrated substrate 201 can evenly distribute stress to each row of cells 100, reducing the risk of damage caused by uneven stress on individual cells 100. Simultaneously, its standardized connection method makes the battery pack 200 easier to assemble and disassemble, improving production and maintenance efficiency.

[0083] The orderly arrangement of individual battery cells 100 in two directions, combined with the array connection of the integrated substrate 201, makes full use of the internal space of the battery pack 200, resulting in a more compact structure. Compared with traditional layouts, this reduces unnecessary space waste, increases the volumetric energy density of the battery pack 200, and meets the miniaturization and high-capacity requirements of electric vehicles, energy storage power stations, and other applications. At the same time, the orderly layout facilitates the integration and installation of the battery pack 200 with other equipment, improving the overall system's adaptability.

[0084] Furthermore, the integrated substrate 201 in this embodiment can also be made of heat-insulating and insulating materials, such as vacuum insulation panels or aerogel and other low thermal conductivity materials, dividing the battery pack 200 into multiple independent thermal zones. When each row of batteries generates a large amount of heat under high load, the integrated substrate 201 can significantly reduce the heat conduction efficiency, making it difficult for heat to spread to adjacent rows, effectively preventing the risk of thermal runaway from spreading between battery packs 200, creating a stable thermal environment for each row of batteries, and improving the overall thermal safety and reliability of the battery pack 200. At the same time, the insulating properties of the integrated substrate 201 block the electrical path between adjacent rows of batteries, preventing short circuit accidents caused by battery pack vibration, wiring aging, etc.

[0085] The above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all possible implementations here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A single-cell battery having a first direction and a second direction perpendicular to each other, characterized in that, include: The housing is a square housing, and the housing has a first sidewall located in the first direction and a second sidewall located in the second direction, wherein the dimension of the second sidewall in the first direction is smaller than the dimension of the first sidewall in the second direction; An electrode assembly, wherein the electrode assembly is disposed within the housing; A data acquisition module is electrically connected to the electrode assembly and is disposed on the side of the second sidewall away from the electrode assembly.

2. The single-cell battery according to claim 1, characterized in that, The single battery cell also has a third direction perpendicular to both the first direction and the second direction, and the housing has a top wall located in the third direction; The single cell also includes an electrode assembly, which includes a first electrode and a second electrode. The first electrode and the second electrode have opposite polarities and are electrically connected to the acquisition module. At least one of the first electrode and the second electrode is insulated from the top wall.

3. The single-cell battery according to claim 2, characterized in that, Both the first electrode post and the second electrode post are inserted through the top wall and partially located on the side of the housing away from the electrode assembly. The acquisition module includes an acquisition unit, a first acquisition line, and a second acquisition line. The acquisition unit is located on the second side wall. One end of the first acquisition line is electrically connected to the acquisition unit, and the other end of the first acquisition line is electrically connected to the first electrode post. One end of the second acquisition line is electrically connected to the acquisition unit, and the other end of the second acquisition line is electrically connected to the second electrode post.

4. The single-cell battery according to claim 3, characterized in that, The acquisition module further includes a first adhesive layer, which is disposed between the first acquisition line and the second sidewall and / or the top wall; and / or The acquisition module further includes a second adhesive layer, which is disposed between the second acquisition line and the second sidewall and / or the top wall; and / or The first electrode and the second electrode are spaced apart along the second direction. The second acquisition line is located on one side of the first electrode or the second electrode in the first direction and is on the top wall. The second acquisition line and the first acquisition line are spaced apart in the first direction.

5. The single-cell battery according to claim 3, characterized in that, The single cell also includes a unit substrate, which is disposed on the second sidewall, and the acquisition unit is disposed on the unit substrate.

6. The single-cell battery according to claim 3, characterized in that, The acquisition module also includes a wireless transceiver unit, which is located on the second side wall and is communicatively connected to the acquisition unit.

7. A battery pack, characterized in that, include: Box; Multiple individual cells as described in any one of claims 1 to 4, wherein the individual cells are disposed within the housing.

8. The battery pack according to claim 7, characterized in that, The battery pack also includes an integrated substrate, which connects to the second sidewalls of the plurality of individual cells, and the acquisition module of each individual cell is disposed on the integrated substrate; Each of the individual battery cells has a wireless transceiver unit in its acquisition module, and the wireless transceiver unit is located on the integrated substrate; or, the battery pack further includes a wireless transceiver unit located on the integrated substrate, and the wireless transceiver unit is communicatively connected to the acquisition modules of all the individual battery cells.

9. The battery pack according to claim 7, characterized in that, The battery pack also includes multiple unit substrates, each of which is disposed on the second sidewall of the corresponding single cell, and the acquisition module of each single cell is disposed on the corresponding unit substrate; Each of the acquisition modules is equipped with a wireless transceiver unit, which is located on the corresponding unit substrate.

10. The battery pack according to claim 8, characterized in that, The individual cells are arranged along the first direction, and the integrated substrate is connected to a plurality of individual cells arranged in rows along the first direction. The integrated substrate has a plurality of cells spaced apart along the second direction, and the individual cells have at least two rows along the second direction.

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