Battery connection structure and battery device

Abstract

The application discloses a battery connection structure and a battery device, which comprise a first battery, a connection terminal for connecting any of the following objects: an external load, an external power supply, a circuit board connected with the first battery and the connection terminal, and used for managing discharging of the first battery to the external load or charging of the first battery by the external power supply, wherein electrical conduction is realized between the first battery and the circuit board and / or between the connection terminal and the circuit board through a direct electrical connection mode. Thus, the application replaces a traditional wire connection structure through the direct electrical connection mode between the first battery and the circuit board and / or between the connection terminal and the circuit board, effectively reduces the number of wires, reduces the complexity of manual operation, improves the production and assembly efficiency, reduces additional energy loss caused by the wire connection, and improves the overall performance of the battery connection structure.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery connection structure and a battery device. Background Technology

[0002] Currently, commercially available batteries, especially those for lead-acid converted to lithium-ion motorcycles, all use wires welded to components internally. For example... Figure 1 As shown, in the related technology, the positive electrode of battery 3 is soldered to the positive electrode pad of circuit board 2 via solder wire C1, and the negative electrode of battery 3 is soldered to the negative electrode pad of circuit board 2 via solder wire C2. The connection terminals are divided into positive terminal 101 and negative terminal 102. Positive terminal 101 is soldered to the positive electrode pad of circuit board 2 via solder wire C3, and negative terminal 102 is soldered to the negative electrode pad of circuit board 2 via solder wire C4. This results in a large number of solder wires and numerous soldering operations, leading to low efficiency in manual assembly and preventing fully automated production. Furthermore, the soldering of these wires results in additional energy loss.

[0003] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] This application provides a battery connection structure and a battery device to solve the efficiency problem and energy loss problem caused by excessive bonding wires in related technologies.

[0005] The technical solution adopted in this application is as follows.

[0006] In a first aspect, this application provides a battery connection structure, including:

[0007] First battery;

[0008] Connection terminals are used to connect to any of the following: external load or external power supply;

[0009] A circuit board, connecting the first battery and the connection terminal, is used to manage the discharge of the first battery to an external load, or the charging of the first battery by an external power source.

[0010] Electrical connection between the first battery and the circuit board and / or between the connecting terminal and the circuit board is achieved through direct electrical connection.

[0011] Thus, this application replaces the traditional wire bonding structure with a direct electrical connection between the first battery and the circuit board and / or between the connection terminal and the circuit board, effectively reducing the number of wires, reducing the complexity of manual operation, improving production and assembly efficiency, and reducing the additional energy loss caused by wire bonding, thereby improving the overall performance of the battery connection structure.

[0012] In conjunction with the first aspect, in one possible implementation, the direct electrical connection method is implemented by any of the following connection methods or any combination of the following connection methods:

[0013] Fixed connection via conductive medium;

[0014] The connection is fixed or detachable through a conductive structure integrated into the connected object, wherein the connected object includes a circuit board, a first battery, and / or connection terminals.

[0015] Thus, the implementation of the battery connection structure in this application is more diversified, applicable to various different production processes and assembly requirements, expanding the scope of application and flexibility of this application.

[0016] In conjunction with the first aspect, in one possible implementation, the conductive structure is a welded structure, and the objects being connected are welded together by the welded structure.

[0017] In this way, by using welding instead of wire bonding, the additional resistance and energy loss caused by wire bonding are reduced, the reliability and stability of the structure are improved, and the manufacturing process is made simple and convenient.

[0018] For example, the welding structure includes a first pad located on the circuit board, and the electrodes of the first battery are welded and fixed to the first pad;

[0019] And / or, the welding structure includes a second pad located on the circuit board, and the connecting terminal is welded to the second pad.

[0020] In this way, the pads are placed on the circuit board and directly soldered to the battery electrodes or connection terminals. The structure is simple, reliable, and easy to automate, which further improves assembly efficiency and electrical connection stability.

[0021] In conjunction with the first aspect, in one possible implementation, the conductive structure is a plug-in structure, through which the connected objects are detachably plugged in.

[0022] Thus, the use of a plug-in structure to achieve detachable connection further simplifies the assembly, disassembly and maintenance process, and enables quick installation and replacement without welding, significantly improving the convenience of subsequent maintenance.

[0023] For example, the plug-in structure includes a first conductive slot formed on a circuit board, into which the electrodes of the first battery are inserted;

[0024] And / or, the plug-in structure includes a second conductive slot formed on the circuit board, into which a connection terminal is inserted.

[0025] In this way, by setting conductive slots on the circuit board, the battery electrodes or connecting terminals can be inserted into the conductive slots to achieve connection, which increases the robustness and stability of the connection structure, while facilitating automated assembly production and subsequent maintenance and replacement.

[0026] In conjunction with the first aspect, in one possible implementation, the conductive structure includes a magnetic structure, through which the connected objects are detachably magnetically connected.

[0027] Thus, the magnetic structure is used to achieve connection. This solution can achieve quick connection and disconnection without mechanical plugging or welding, which further improves assembly efficiency and maintenance convenience, while avoiding mechanical wear caused by repeated plugging and unplugging.

[0028] For example, the magnetic attraction structure includes a first conductive sheet and a first magnet disposed on the circuit board. The first magnet is embedded in the circuit board and located below the first conductive sheet, and the electrodes of the first battery are attracted to the first conductive sheet.

[0029] And / or, the magnetic attraction structure includes a second conductive sheet and a second magnet disposed on the circuit board, the second magnet being embedded in the circuit board and located below the second conductive sheet, and the connecting terminal being attracted to the second conductive sheet.

[0030] In this way, by embedding magnets and conductive sheets inside the circuit board, electrodes or terminals can be connected quickly and reliably by magnetic attraction, further improving the stability and convenience of the connection, making it suitable for automated assembly and rapid maintenance operations.

[0031] In conjunction with the first aspect, in one possible implementation, the conductive structure includes a resilient connection mechanism through which the connected objects are detachably and resiliently connected.

[0032] Thus, by adopting a flexible connection mechanism, quick connection and reliable conduction are achieved through elastic contact, which not only facilitates automated production but also makes it easier for later maintenance and replacement, thereby improving the practicality and assembly efficiency of the battery connection structure.

[0033] For example, the elastic connection mechanism includes a first spring conductive probe embedded in the circuit board and a first conductive spring piece integrated at the corresponding position of the electrode of the first battery, wherein the first spring conductive probe and the first conductive spring piece are in elastic contact.

[0034] And / or, the elastic connection mechanism includes a second spring conductive probe embedded in the circuit board and a second conductive spring integrated at the corresponding position on the bottom of the connection terminal, wherein the second spring conductive probe and the second conductive spring are in elastic contact.

[0035] In this way, a reliable electrical connection is achieved through the elastic contact between the spring conductive probe and the conductive spring sheet. The structure is simple and reliable, which facilitates automated production and assembly and improves the stability of the electrical connection.

[0036] In conjunction with the first aspect, in one possible implementation, the conductive medium is conductive adhesive, wherein: the electrodes of the first battery are fixedly bonded to the circuit board by conductive adhesive, and / or, the connecting terminals are fixedly bonded to the circuit board by conductive adhesive.

[0037] Thus, using conductive adhesive to achieve a fixed connection is more convenient for automated production compared to the traditional wire bonding method. It can also effectively reduce connection resistance, reduce energy loss, and improve connection stability.

[0038] For example, the first battery includes at least one of a lithium battery, a sodium battery, or a lead-acid battery.

[0039] Thus, the first battery type covers a variety of types such as lithium batteries, sodium batteries, or lead-acid batteries, which improves the versatility and applicability of this application and better meets the market demand for different battery types.

[0040] For example, direct electrical connection does not include wire connection. This explicitly excludes wire connection, effectively avoiding the energy loss and low assembly efficiency problems associated with traditional wire bonding, further highlighting the technical features and advantages of this application.

[0041] Secondly, this application also provides a battery device including the battery connection structure of the first aspect, thereby enabling the battery device to have more efficient production and assembly capabilities, lower connection losses and better maintenance convenience, thus improving the overall performance of the battery device.

[0042] In conjunction with the second aspect, in one possible implementation, the battery device further includes a battery casing. The first battery and the circuit board are assembled inside the battery casing, while the connection terminals are exposed outside the battery casing and penetrate the casing to connect to the circuit board. Thus, the battery device is encapsulated by the battery casing, with the connection terminals exposed outside, making the battery device structure compact and ensuring its reliability and safety in practical applications.

[0043] In conjunction with the second aspect, in one possible implementation, the battery device is a modified battery, and the battery casing is a casing designed for a second battery. That is, this application is also applicable to modified batteries and casings designed for second batteries, enabling direct replacement assembly, facilitating market promotion and application, reducing modification costs, and improving the market adaptability of the battery device.

[0044] In conjunction with the second aspect, one possible implementation involves using a lithium battery as the first battery and a lead-acid battery as the second. This replaces traditional lead-acid batteries with lithium batteries, significantly improving battery performance and lifespan, better meeting market demand for high-performance battery products, and possessing considerable market value and application prospects.

[0045] For more detailed implementation information regarding the battery device, please refer to the description of any of the implementation methods in the first aspect above, as well as the content of the specific implementation methods below, which will not be repeated here.

[0046] The beneficial effects of the second aspect described above can be referred to in the first aspect or any possible implementation of the first aspect, and will not be elaborated here. Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations.

[0047] Other advantages, objectives and features of this application will be partly apparent from the description below, and partly understood by those skilled in the art through study and practice of this application. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the battery device in related technologies;

[0050] Figure 2 This is a schematic diagram of the battery connection structure provided in this application;

[0051] Figure 3 This is a schematic diagram of the first type of direct electrical connection between the connector and the circuit board.

[0052] Figure 4 This is a schematic diagram of the first direct electrical connection method between the first battery and the circuit board;

[0053] Figure 5 This is a schematic diagram of the second type of direct electrical connection between the connector and the circuit board;

[0054] Figure 6 This is a schematic diagram of a second direct electrical connection method between the first battery and the circuit board;

[0055] Figure 7 This is a schematic diagram of the third direct electrical connection method between the connector and the circuit board;

[0056] Figure 8 This is a schematic diagram of the third direct electrical connection method between the first battery and the circuit board;

[0057] Figure 9 This is a schematic diagram of the fourth type of direct electrical connection between the connector and the circuit board;

[0058] Figure 10 This is a schematic diagram of the fourth direct electrical connection method between the first battery and the circuit board;

[0059] Figure 11 This is a schematic diagram of the fifth type of direct electrical connection between the connector and the circuit board;

[0060] Figure 12 This is a schematic diagram of the fifth direct electrical connection method between the first battery and the circuit board;

[0061] Figure 13 This is one of the structural diagrams showing that the first battery and the circuit board, as well as the connection terminal and the circuit board, are all directly electrically connected.

[0062] Figure 14 This is the second structural diagram showing that the first battery and the circuit board, as well as the connection terminal and the circuit board, are all directly electrically connected.

[0063] Figure 15 This is a schematic diagram of the structure where the first battery is soldered to the circuit board with wires and the connection terminal is directly electrically connected to the circuit board.

[0064] Explanation of icon numbers:

[0065] 101. Positive terminal; 102. Negative terminal; 2. Circuit board; 3. Battery; 301. Positive electrode; 401. Second positive pad; 402. Solder; 403. First positive pad; 404. Solder; 501. Second positive slot; 502. First positive slot; 601. Second magnet; 602. Second positive conductive sheet; 603. First magnet; 604. First positive conductive sheet; 701. Second positive conductive probe; 702. Second conductive spring; 703. First positive conductive probe; 704. First conductive spring; 801. Conductive adhesive; 802. Conductive adhesive. Detailed Implementation

[0066] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0067] The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. The terms "first," "second," and other ordinal terms used in this application may be used to describe various constituent elements, but these constituent elements are not limited by these terms. The purpose of using these terms is solely to distinguish one constituent element from others and should not be construed as indicating or implying relative importance. For example, without departing from the scope of this application, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element.

[0068] The technical solutions of this application are described below through multiple embodiments. It should be understood that these embodiments can be implemented in many different forms and should not be construed as being limited to the embodiments described herein. It should also be noted that the order in which the embodiments are described in this application is not intended to limit the priority of the embodiments.

[0069] To address the efficiency and energy loss issues caused by excessive wire bonding in related technologies, this application provides a battery connection structure. (Reference) Figure 2 The battery connection structure of this application includes: a first battery 3, a connection terminal and a circuit board 2.

[0070] In this application, the first battery 3 and the circuit board 2 and / or the connecting terminal and the circuit board 2 are electrically connected by a direct electrical connection.

[0071] As is understandable, direct electrical connection refers to a conductive path being established between two entities through physical contact, rather than through independent intermediate connectors. Independent intermediate connectors include wires, resistors, adapters, and other independently existing components. Because direct electrical connection does not involve wire connections, it effectively avoids the energy loss and low assembly efficiency problems associated with traditional wire bonding.

[0072] The connection terminals are used to connect to either an external load or an external power source. The connection terminals are divided into positive terminal 101 and negative terminal 102. Positive terminal 101 and negative terminal 102 are used to connect to the positive and negative terminals of the external load, respectively. Similarly, positive terminal 101 and negative terminal 102 are also used to connect to the positive and negative terminals of the external power source, respectively.

[0073] When the first battery 3 needs charging, it receives energy through an external power source connected to the connection terminal; when the first battery 3 discharges, it transfers energy to an external load connected to the connection terminal. Taking an electric motorcycle as an example, when the first battery 3 needs charging, it receives energy through mains power connected to the connection terminal; when the first battery 3 discharges, it transfers energy to the motorcycle's motor drive system connected to the connection terminal.

[0074] It should be noted that the connection mentioned above only requires a connection between the external load, external power supply, and the connection terminal; it does not restrict whether the connection method is fixed or detachable, nor does it limit it to direct or indirect connection. For example, the connection terminal and the external load can be fixedly connected or detachably connected, and a switch can be configured in the connection path to control whether the current path between them is conductive; furthermore, the connection terminal and the external load can be directly connected or indirectly connected through other intermediate circuits.

[0075] Circuit board 2 connects the first battery 3 and the connecting terminal. It is understood that circuit board 2 has positive and negative terminals. Theoretically, the positive electrode and positive terminal 101 of the first battery 3 can be connected to the same positive terminal on the circuit board, and the negative electrode and negative terminal 102 of the first battery 3 can be connected to the same negative terminal on the circuit board. However, considering assembly issues, circuit board 2 generally has two positive terminals and two negative terminals. The first positive terminal of circuit board 2 is connected to the positive electrode of the first battery 3, the first negative terminal of circuit board 2 is connected to the negative electrode of the first battery 3, the second positive terminal of circuit board 2 is connected to the positive terminal 101, and the second negative terminal of circuit board 2 is connected to the negative terminal 102.

[0076] Circuit board 2 is used to manage the discharge of the first battery 3 to an external load, or the charging of the first battery 3 by an external power source. That is, circuit board 2 has two functions at the same time: managing the discharge of the first battery 3 to an external load and managing the charging of the first battery 3 by an external power source. Circuit board 2 can perform one of these functions at any time.

[0077] In some embodiments, such as Figure 2 As shown in (a), the positive terminal 101 and negative terminal 102 are electrically connected to the second positive and negative terminals of the circuit board 2 via direct electrical connection. The connection method between the positive and negative electrodes of the first battery 3 and the first positive and negative terminals of the circuit board 2 is not limited; for example, it can be a traditional wire bonding connection, such as... Figure 15 As shown, the first battery 3 and the circuit board 2 are specifically connected by wire welding, and the connection terminal is directly electrically connected to the circuit board 2. This is different from the previous method. Figure 1 The solution shown can save two solder wires, C3 and C4.

[0078] In some embodiments, such as Figure 2 As shown in (b), the positive and negative electrodes of the first battery 3 are electrically connected to the first positive and negative terminals of the circuit board 2 via direct electrical connection; the connection method between the positive terminal 101, the negative terminal 102, and the second positive and negative terminals of the circuit board 2 is not limited, and can be, for example, a traditional wire bonding connection. Thus, compared to this application… Figure 1 The solution shown can save two solder wires, C1 and C2.

[0079] In some embodiments, such as Figure 2 As shown in (c), the positive and negative electrodes of the first battery 3 are electrically connected to the first positive and negative terminals of the circuit board 2 via direct electrical connection; the positive terminal 101 and negative terminal 102 are also electrically connected to the second positive and negative terminals of the circuit board 2 via direct electrical connection. Thus, compared to this application… Figure 1 The solution shown can save four solder wires: C1, C2, C3, and C4. For example... Figure 13 , 14 As shown, the first battery 3 and the circuit board 2, as well as the connection terminal and the circuit board 2, are all directly electrically connected.

[0080] Understandably, if the following is adopted... Figure 2 In scheme (a), the positions of the second positive and negative terminals and the connecting terminals (positive terminal 101, negative terminal 102) of circuit board 2 can be pre-set in practical applications, so that the second positive and negative terminals of circuit board 2 and the positive terminal 101 and negative terminal 102 can be aligned. If the following is adopted... Figure 2 In scheme (b), the positions of the first positive and negative terminals of circuit board 2 and the positive and negative terminals of the first battery 3 can be pre-set to correspond, so that the first positive and negative terminals of circuit board 2 and the positive and negative terminals of the first battery 3 can be aligned. Similarly, if the following is adopted... Figure 2 In scheme (c), in specific applications, the positions of the first positive and negative terminals of the circuit board 2 and the positive and negative electrodes of the first battery 3 are pre-set to correspond, so that the first positive and negative terminals of the circuit board 2 and the positive and negative electrodes of the first battery 3 can be aligned. In addition, the positions of the second positive and negative terminals of the circuit board 2 and the connecting terminals (positive terminal 101, negative terminal 102) are pre-set to correspond, so that the second positive and negative terminals of the circuit board 2 and the positive terminal 101, negative terminal 102 can be aligned.

[0081] Thus, this application replaces the traditional wire bonding structure with a direct electrical connection between the first battery 3 and the circuit board 2 and / or between the connection terminal and the circuit board 2, effectively reducing the number of wires, reducing the complexity of manual operation, improving production and assembly efficiency, and reducing the additional energy loss caused by wire bonding, thereby improving the overall performance of the battery connection structure.

[0082] In one possible implementation, the direct electrical connection is achieved by any of the following connection methods or any combination of the following connection methods:

[0083] (A) Fixed connection via a conductive medium;

[0084] (B) A fixed or detachable connection is made by means of a conductive structure integrated into the connected object, wherein the connected object includes a circuit board 2, a first battery 3 and / or a connection terminal.

[0085] Taking the positive terminal 101 as an example, the direct electrical connection between the positive terminal 101 and the positive terminal of the circuit board 2 can be selected as connection method (A), connection method (B), or both connection method (A) and connection method (B) can be selected simultaneously.

[0086] Thus, the implementation of the battery connection structure in this application is more diversified, applicable to various different production processes and assembly requirements, expanding the scope of application and flexibility of this application.

[0087] It is understandable that the direct electrical connection between the first battery 3 and the circuit board 2 can be the same as or different from the direct electrical connection between the connection terminal and the circuit board 2. Similarly, the direct electrical connection between the positive electrode of the first battery 3 and the positive electrode of the circuit board 2 can be the same as or different from the direct electrical connection between the negative electrode of the first battery 3 and the negative electrode of the circuit board 2. Likewise, the direct electrical connections between the positive terminal 101, the negative terminal 102, and the circuit board 2 can be the same as or different.

[0088] The following section uses the connection method between the positive terminal 101 and the circuit board 2, and the connection method between the positive terminal of the battery and the first positive terminal of the circuit board 2 as examples to introduce several direct electrical connection methods.

[0089] refer to Figure 3 , 4 In one possible implementation, the conductive structure in connection method (B) is a welded structure, and the objects being connected are fixed together by welding. Thus, using welding instead of wire bonding reduces the additional resistance and energy loss associated with wire bonding, improves the reliability and stability of the structure, and simplifies the manufacturing process.

[0090] For example, refer to Figure 3 , 13 14. The welding structure includes two first solder pads located on the circuit board 2. One first solder pad is a first positive solder pad 403, and the other is a first negative solder pad. The first positive solder pad 403 and the first negative solder pad correspond to the first positive electrode and the first negative electrode of the circuit board 2, respectively. The positive electrode and the negative electrode of the first battery 3 are welded and fixed to the corresponding first positive solder pad 403 and first negative solder pad, respectively. Figure 13 , 14 Two first pads can be set at the top of the circuit board 2 near the same long edge as the first positive pad 403 and the first negative pad respectively. The positive and negative electrodes of the first battery 3 are bent and soldered to the first positive pad 403 and the first negative pad respectively. Figure 4 The image shows the first positive pad 403 and the positive electrode 301 of the first battery 3 being fixed together by solder 404.

[0091] For example, continue to refer to Figure 3 , 13 14. The welding structure includes two second pads located on circuit board 2, one second pad being a second positive pad 401 and the other a second negative pad. The second positive pad 401 and the second negative pad correspond to the second positive and second negative terminals of circuit board 2, respectively. Two connecting terminals (positive terminal 101 and negative terminal 102) are welded and fixed to the two second pads (second positive pad 401 and second negative pad). Figure 13 , 14 Two second pads can be set at the top of the circuit board 2 near the two short edges, respectively serving as the second positive pad 401 and the second negative pad. Figure 3 The image shows the positive terminal 101 and the second positive pad 401 being fixed together by solder 402.

[0092] Thus, the pads are set on the circuit board 2, and the battery electrodes or connection terminals are directly soldered to the pads. The structure is simple, reliable, and easy to automate, which further improves assembly efficiency and electrical connection stability.

[0093] refer to Figure 5 , 6 In one possible implementation, the conductive structure in connection method (B) is a plug-in structure, through which the connected objects are detachably plugged in. Thus, using a plug-in structure to achieve a detachable connection further simplifies the assembly, disassembly, and maintenance process, enabling rapid installation and replacement without welding, significantly improving the convenience of subsequent maintenance.

[0094] For example, refer to Figure 6 The insertion structure includes two first conductive slots formed on the circuit board 2. One first conductive slot is a first positive slot 502, and the other is a first negative slot. The first positive slot 502 and the first negative slot are respectively equivalent to the first positive electrode and the first negative electrode of the circuit board 2. The positive electrode and the negative electrode of the first battery 3 are respectively inserted into the corresponding first positive slot 502 and the first negative slot. Figure 6 The image shows the positive electrode 301 of the first battery 3 inserted into the first positive slot 502.

[0095] For example, refer to Figure 5The insertion structure includes two second conductive slots on the circuit board 2. One second conductive slot is a second positive slot 501, and the other is a second negative slot. The second positive slot 501 and the second negative slot correspond to the second positive and second negative terminals of the circuit board 2, respectively. Two connecting terminals (positive terminal 101 and negative terminal 102) are inserted into the two second conductive slots. Figure 5 The image shows the positive terminal 101 being inserted into the second positive slot 501.

[0096] Thus, by setting conductive slots on circuit board 2, battery electrodes or connecting terminals can be inserted into the conductive slots to achieve connection, which increases the robustness and stability of the connection structure, while facilitating automated assembly production as well as subsequent maintenance and replacement.

[0097] refer to Figure 7 , 8 In one possible implementation, the conductive structure in connection method (B) includes a magnetic attraction structure, through which the connected objects are detachably magnetically connected. Thus, using a magnetic attraction structure for connection allows for quick connection and disconnection without mechanical plugging or soldering, further improving assembly efficiency and maintenance convenience, while avoiding mechanical wear caused by repeated plugging and unplugging.

[0098] For example, refer to Figure 8 The magnetic attraction structure includes two first conductive sheets and two corresponding first magnets disposed on the circuit board 2. The first magnets are embedded in the circuit board 2 and located below the corresponding first conductive sheets. One first conductive sheet is a first positive conductive sheet 604, and the other is a first negative conductive sheet. The first positive conductive sheet 604 and the first negative conductive sheet are respectively equivalent to the first positive electrode and the first negative electrode of the circuit board 2. The positive electrode 301 of the first battery 3 is attracted to the first positive conductive sheet 604, and the negative electrode of the first battery 3 is attracted to the first negative conductive sheet. Figure 8 The image shows the first positive conductive sheet 604. A first magnet 603 is embedded directly below the first positive conductive sheet 604. Therefore, when the positive electrode of the first battery 3 is placed on the first positive conductive sheet 604, it will be attracted to the first positive conductive sheet 604 due to the magnetic attraction of the first magnet 603.

[0099] For example, refer to Figure 7 The magnetic attraction structure includes two second conductive sheets and two corresponding second magnets disposed on the circuit board 2. The second magnets are embedded in the circuit board 2 and located below the corresponding second conductive sheets. One second conductive sheet is a second positive conductive sheet 602, and the other is a second negative conductive sheet. The second positive conductive sheet 602 and the second negative conductive sheet are respectively equivalent to the second positive terminal and the second negative terminal of the circuit board 2. The positive terminal 101 is attracted to the second positive conductive sheet 602, and the negative terminal 102 is attracted to the second negative conductive sheet. Figure 7The image shows the second positive conductive sheet 602. A second magnet 601 is embedded directly below the second positive conductive sheet 602. Therefore, when the positive terminal 101 is placed on the second positive conductive sheet 602, it will be attracted to the second positive conductive sheet 602 due to the magnetic attraction of the second magnet 601.

[0100] Thus, by embedding magnets and conductive sheets within circuit board 2, electrodes or terminals can be connected quickly and reliably using magnetic attraction, further improving the stability and convenience of the connection, making it suitable for automated assembly and rapid maintenance operations.

[0101] refer to Figure 9 , 10 In one possible implementation, the conductive structure in connection method (B) includes a resilient connection mechanism, through which the connected objects are detachably and resiliently connected. Thus, by employing a resilient connection mechanism, rapid connection and reliable conduction are achieved through elastic contact, which not only facilitates automated production but also makes subsequent maintenance and replacement easier, improving the practicality and assembly efficiency of the battery connection structure.

[0102] For example, refer to Figure 10 The elastic connection mechanism includes two first spring conductive probes embedded in the circuit board 2 and two first conductive contacts integrated into the corresponding positions of the positive and negative electrodes of the first battery 3. The first spring conductive probes are in elastic contact with the corresponding first conductive contacts. One first spring conductive probe is a first positive conductive probe 703, and the other is a first negative conductive probe. The first positive conductive probe 703 and the first negative conductive probe correspond to the first positive electrode and the first negative electrode of the circuit board 2, respectively. Figure 10 The image shows the first positive conductive probe 703 in elastic contact with the first conductive spring 704 integrated at the end of the positive electrode 301 of the first battery 3.

[0103] For example, refer to Figure 9 The elastic connection mechanism includes two second spring conductive probes embedded in the circuit board 2, and two second conductive spring contacts integrated at corresponding positions of the positive terminal 101 and the negative terminal 102. The second spring conductive probes are in elastic contact with their corresponding second conductive spring contacts. One second spring conductive probe is a second positive conductive probe 701, and the other is a second negative conductive probe. The second positive conductive probe 701 and the second negative conductive probe are respectively equivalent to the second positive electrode and the second negative electrode of the circuit board 2. Figure 9 The image shows the second positive conductive probe 701 and the second conductive spring 702 integrated at the end of the positive terminal 101 in elastic contact.

[0104] In this way, a reliable electrical connection is achieved through the elastic contact between the spring conductive probe and the conductive spring sheet. The structure is simple and reliable, which facilitates automated production and assembly and improves the stability of the electrical connection.

[0105] refer to Figure 11 , 12 In one possible implementation, the conductive medium in connection method (A) is conductive adhesive. For example... Figure 12 This demonstrates how the positive electrode 301 of the first battery 3 is fixedly bonded to the first positive electrode of the circuit board 2 using conductive adhesive 802. For example... Figure 11 The demonstration shows the positive terminal 101 being fixedly bonded to the second positive terminal of the circuit board 2 using conductive adhesive 801. This method of using conductive adhesive for fixing the connection is more convenient for automated production compared to traditional wire bonding, and it effectively reduces connection resistance, minimizes energy loss, and improves connection stability.

[0106] For example, the first battery 3 includes at least one of a lithium battery, a sodium battery, or a lead-acid battery. Thus, the first battery 3 covers multiple types such as lithium batteries, sodium batteries, or lead-acid batteries, improving the versatility and applicability of this application and better meeting the market demands for different battery types.

[0107] Secondly, this application also provides a battery device that can be applied to electric motorcycles, electric bicycles, balance scooters, and other similar applications. The battery device of this application includes the battery connection structure of the first aspect, thereby enabling the battery device to have more efficient production and assembly capabilities, lower connection losses, and better maintenance convenience, thus improving the overall performance of the battery device.

[0108] In one possible implementation, the battery device further includes a battery casing, which comprises a housing and a top cover for sealing the housing. The first battery 3 and the circuit board 2 are assembled inside the housing of the battery casing, with the circuit board 2 positioned above the first battery 3. Connection terminals are exposed outside the battery casing and penetrate the top cover of the battery casing before connecting to the circuit board 2. Thus, the battery device is encapsulated by the battery casing, with the connection terminals exposed outside the casing, resulting in a compact battery device structure and ensuring the reliability and safety of the battery device in practical applications.

[0109] When assembling the battery assembly, the connecting terminals can be assembled with circuit board 2 first (e.g., soldering, adhesive bonding), and then the connecting terminals can be passed from the inside of the top cover to the outside of the top cover before locking the top cover and the housing. Alternatively, the connecting terminals can be fixed by penetrating the top cover first, and then the electrical connection between the connecting terminals and circuit board 2 can be completed while locking the top cover and the housing (e.g., plug-in, flexible connection, magnetic connection).

[0110] In one possible implementation, the battery device is a modified battery, and the battery casing is a casing designed for a second battery. That is, this application is also applicable to modified batteries and casings designed for second batteries, enabling direct replacement assembly, facilitating market promotion and application, reducing modification costs, and improving the market adaptability of the battery device.

[0111] In one possible implementation, the first battery 3 is a lithium battery, and the second battery is a lead-acid battery. This replaces the traditional lead-acid battery with a lithium battery, achieving a lead-to-lithium battery conversion, significantly improving battery performance and lifespan, better meeting market demand for high-performance battery products, and possessing significant market value and application prospects. The conversion from lead-acid to lithium batteries is generally used in the modification of electric vehicles. Because the lifespan of lead-acid batteries in electric vehicles is relatively short, typically only one or two years, the cost of converting the original lead-acid battery to a lithium battery is much lower than the cost of buying a new electric vehicle. If the lead-acid battery in an electric vehicle is converted to a lithium battery, it is necessary to replace the lead-acid battery inside the battery casing with a lithium battery, and also to configure the lithium battery-specific circuit board 2 described in this application. It is understood that the lead-to-lithium battery conversion can be implemented using any of the aforementioned methods (a), (b), and (c) depending on the specific circumstances. For example, for batteries that are easy to solder, method (c) should be considered, where the circuit board 2 is directly soldered to the terminals on the top cover of the battery casing, and simultaneously soldered directly to the battery 3, eliminating all the original cables C1, C2, C3, and C4. For batteries that are inconvenient to solder, consider method (a): solder circuit board 2 directly to the wiring terminals on the top cover of the battery case, eliminating the original cables C3 and C4, while retaining C1 and C2. For connection terminals that are inconvenient to solder, consider method (b): solder circuit board 2 directly to battery 3, eliminating the original cables C1 and C2, while retaining C3 and C4.

[0112] For more detailed implementation information regarding the battery device, please refer to the description of any of the implementation methods in the first aspect above, as well as the content of the specific implementation methods below, which will not be repeated here.

[0113] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0114] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intervening component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intervening component.

[0115] It should be noted that, unless otherwise specified, the term "connected" or "linked" in this application includes not only directly connecting two entities, but also indirectly connecting them through other entities that have beneficial improvement effects.

[0116] It should be noted that all directional indicators (such as vertical, horizontal, up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0117] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0118] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many forms under the guidance of this application without departing from the spirit and scope of protection of the claims. All equivalent structural transformations made under the concept of this application and using the content of this application's specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of this application.

Claims

1. A battery connection structure, characterized in that, include: First battery; Connection terminals are used to connect to any of the following: external load or external power supply; A circuit board, connecting the first battery and a connection terminal, is used to manage the discharge of the first battery to the external load, or the charging of the first battery by the external power source; Wherein: the first battery and the circuit board and / or the connection terminal and the circuit board are electrically connected by a direct electrical connection.

2. The battery connection structure according to claim 1, characterized in that, The direct electrical connection method is implemented by any one or any combination of the following connection methods: Fixed connection via conductive medium; The connection is fixed or detachable through a conductive structure integrated into the connected object, wherein the connected object includes the circuit board, the first battery, and / or the connection terminal.

3. The battery connection structure according to claim 2, characterized in that, The conductive structure is a welded structure, and the objects being connected are welded together through the welded structure.

4. The battery connection structure according to claim 3, characterized in that, The welding structure includes a first pad located on the circuit board, and the electrodes of the first battery are welded and fixed to the first pad; And / or, the welding structure includes a second pad located on the circuit board, and the connection terminal is welded to the second pad.

5. The battery connection structure according to claim 2, characterized in that, The conductive structure is a plug-in structure, and the connected object is detachably plugged in through the plug-in structure.

6. The battery connection structure according to claim 5, characterized in that, The plug-in structure includes a first conductive slot formed on the circuit board, and the electrodes of the first battery are inserted into the first conductive slot; And / or, the plug-in structure includes a second conductive slot formed in the circuit board, and the connection terminal is inserted into the second conductive slot.

7. The battery connection structure according to claim 2, characterized in that, The conductive structure includes a magnetic attraction structure, through which the connected objects are detachably magnetically connected.

8. The battery connection structure according to claim 7, characterized in that, The magnetic attraction structure includes a first conductive sheet and a first magnet disposed on the circuit board. The first magnet is embedded in the circuit board and located below the first conductive sheet. The electrodes of the first battery are attracted to the first conductive sheet. And / or, the magnetic attraction structure includes a second conductive sheet and a second magnet disposed on the circuit board, the second magnet being embedded in the circuit board and located below the second conductive sheet, and the connection terminal being attracted to the second conductive sheet.

9. The battery connection structure according to claim 2, characterized in that, The conductive structure includes an elastic connection mechanism through which the connected objects are detachably and elastically connected.

10. The battery connection structure according to claim 9, characterized in that, The elastic connection mechanism includes a first spring conductive probe embedded in the circuit board and a first conductive spring piece integrated at the electrode corresponding position of the first battery, wherein the first spring conductive probe and the first conductive spring piece are in elastic contact. And / or, the elastic connection mechanism includes a second spring conductive probe embedded in the circuit board and a second conductive spring integrated at the bottom corresponding position of the connection terminal, wherein the second spring conductive probe and the second conductive spring are in elastic contact.

11. The battery connection structure according to claim 2, characterized in that, The conductive medium is a conductive adhesive, wherein: the electrodes of the first battery are fixedly bonded to the circuit board via the conductive adhesive, and / or the connection terminals are fixedly bonded to the circuit board via the conductive adhesive.

12. The battery connection structure according to claim 1, characterized in that, The first battery includes at least one of a lithium battery, a sodium battery, or a lead-acid battery.

13. The battery connection structure according to claim 1, characterized in that, The direct electrical connection method does not include wire connection.

14. A battery device, characterized in that, Includes the battery connection structure as described in any one of claims 1-13.

15. The battery device according to claim 14, characterized in that, The battery device also includes a battery casing, in which the first battery and the circuit board are assembled inside the battery casing, and the connection terminals are exposed outside the battery casing and penetrate the battery casing to connect to the circuit board.

16. The battery device according to claim 14, characterized in that, The battery device is a modified battery, and the battery casing is a casing designed for a second battery.

17. The battery device according to claim 16, characterized in that, The first battery is a lithium battery, and the second battery is a lead-acid battery.

Images