Battery charging adaptation system

Abstract

The present application specifically relates to conversion apparatuses having an interface conversion function. Disclosed is a battery charging adaptation system. In the system, by means of a conversion apparatus, a charging apparatus having separate charging / discharging ports can be used to charge a battery pack having a common charging / discharging port, and by means of another conversion apparatus, a charging apparatus having a common charging / discharging port can be used to charge a battery pack having separate charging / discharging ports. The problem of it being impossible to match interfaces of a charging apparatus and a battery pack is solved, and the transition of the battery pack from a design having a common charging / discharging port to a design having separate charging / discharging ports can be balanced by means of a conversion apparatus, thereby facilitating an improvement in the usage experience of a user.

Description

A battery charging adapter system

[0001] This application claims priority to Chinese patent application No. 202510098778.9, filed on January 21, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of charging and discharging technology of battery packs in power tools, and specifically to a battery charging adapter system. Background Technology

[0003] Most existing battery packs are configured with a single charging / discharging port, meaning the positive terminal for charging and discharging is the same. In contrast, battery packs can also be configured with different charging / discharging ports, where the positive terminals for charging and discharging are different. Due to the different charging / discharging ports, battery packs with single and different ports have different maximum allowable charging currents and require different charging port locations. Compared to the single-port configuration, the separate-port configuration allows for a larger charging current.

[0004] As battery capacity continues to increase, the charging current required by battery packs also increases, making the currently prevalent method of using the same charging and discharging port insufficient to meet the charging current demands. Therefore, it is necessary to consider the development trend of battery packs with separate charging and discharging ports to accommodate the larger charging currents.

[0005] Because battery packs with the same charging / discharging port and those with different charging / discharging ports have different maximum allowed charging currents and different charging port locations, there are compatibility issues between commonly used chargers with the same charging / discharging port and future battery packs with different charging / discharging ports, as well as between future chargers with different charging / discharging ports and commonly used battery packs with the same charging / discharging port.

[0006] This section provides background information related to this application, which is not necessarily prior art. Summary of the Invention

[0007] One object of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one object of this application is to provide a battery charging adapter system capable of solving at least one of the following problems: the compatibility problem between a charger with the same charging port and a battery pack with different charging / discharging ports, and the compatibility problem between a charger with different charging ports and a battery pack with the same charging / discharging ports.

[0008] To achieve the above objectives, this application adopts the following technical solution:

[0009] A battery charging adapter system includes: a first battery pack having a first battery terminal with a charging and discharging port; a first charging device having a first charging terminal for charging a second battery pack with a different charging and discharging port; and a first conversion device having a first conversion interface electrically connected to the first battery terminal and a second conversion interface electrically connected to the first charging terminal; wherein the first conversion device is configured to charge the first battery pack through the first conversion device when it establishes an electrical connection between the first charging terminal and the first battery terminal.

[0010] In some embodiments, the first battery terminal is configured to transmit charging energy for charging the first battery pack and discharging energy output by the first battery pack.

[0011] In some embodiments, the first battery terminal is configured to be pluggably mounted to a power tool to power the power tool.

[0012] In some embodiments, the first battery terminal is configured as an electrode plate interface, and the first battery terminal is connected to the first conversion interface in a direct plug-in manner.

[0013] In some embodiments, the second conversion interface is configured as an electrode plate interface, and the second conversion interface is connected to the first charging terminal in a direct plug-in manner.

[0014] In some embodiments, the first battery terminal includes at least a first positive terminal, a first negative terminal, and a first communication terminal, wherein the first positive terminal, the first negative terminal, and the first communication terminal are configured as discrete terminals.

[0015] In some embodiments, the second battery pack has a second battery terminal with separate charging and discharging ports, the second battery terminal including at least a charging positive terminal and a discharging positive terminal; the first charging terminal can be electrically connected to the charging positive terminal of the second battery pack.

[0016] In some embodiments, the first conversion interface and the second conversion interface are electrically connected via conductive elements.

[0017] In some embodiments, the conductive element includes a power line or a metal sheet.

[0018] In some embodiments, the conductive element is integrally formed with the first conversion interface or integrally formed with the second conversion interface.

[0019] In some embodiments, the minimum charging current that the first conversion interface, the second conversion interface, or the conductive element can withstand is greater than or equal to 5A.

[0020] A battery charging adapter system includes: a second battery pack, a second battery terminal having separate charging and discharging ports, the second battery terminal including discrete charging positive terminals and discharging positive terminals; a second charging device, having a second charging terminal for charging the first battery pack using the same charging and discharging ports; and a second conversion device, having a third conversion interface electrically connected to the second battery terminal and a fourth conversion interface electrically connected to the second charging terminal; wherein the second conversion device is configured such that when it establishes an electrical connection between the second charging terminal and the second battery terminal, the second charging device can charge the second battery pack through the second conversion device.

[0021] In some embodiments, the third conversion interface is configured to be connected to the positive charging terminal of the second battery to transmit the charging power output by the second charging device.

[0022] In some embodiments, the third conversion interface and the fourth conversion interface are electrically connected via conductive elements.

[0023] In some embodiments, the conductive element includes a power line or a metal sheet.

[0024] In some embodiments, the conductive element is integrally formed with the first conversion interface or integrally formed with the second conversion interface.

[0025] In some embodiments, the minimum charging current that the third conversion interface, the fourth conversion interface, or the conductive element can withstand is greater than or equal to 5A.

[0026] In some embodiments, the second battery terminal is configured as an electrode plate interface, and the second battery terminal is connected to the third conversion interface in a direct plug-in manner.

[0027] In some embodiments, the fourth conversion interface is configured as an electrode plate interface, and the fourth conversion interface is connected to the second charging terminal in a direct plug-in manner.

[0028] In some embodiments, the discharge-charge terminal is configured to be pluggably mounted to the power tool to power the power tool. Attached Figure Description

[0029] Figure 1 is a schematic diagram of a battery charging adapter system provided in this application;

[0030] Figure 2 is a structural schematic diagram of a second battery pack provided in this application;

[0031] Figure 3 is a schematic diagram of another battery charging adapter system provided in this application;

[0032] Figure 4 is a structural schematic diagram of another battery charging adapter system provided in this application;

[0033] Figure 5 is a structural schematic diagram of another battery charging adapter system provided in this application;

[0034] Figure 6 is a structural schematic diagram of another battery charging adapter system provided in this application;

[0035] Figure 7 is a structural schematic diagram of a first battery pack provided in this application;

[0036] Figures 8, 9 and 10 are schematic diagrams of the results of another battery charging adapter system provided in this application. Detailed Implementation

[0037] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0038] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0039] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0040] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0041] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are inclusive of values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0042] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0043] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0044] In this application, the terms "controller," "processor," "central processing unit," "CPU," and "MCU" are used interchangeably. When using the unit "controller," "processor," "central processing unit," "CPU," or "MCU" to perform a specific function, unless otherwise stated, these functions may be performed by a single or multiple of the aforementioned units.

[0045] In this application, the terms "device," "module," or "unit" are used to describe devices that can be implemented in hardware or software to perform a specific function.

[0046] In this application, the terms “calculation,” “judgment,” “control,” “determine,” “identify,” etc., refer to the operation and process of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0048] This application provides a battery charging adapter system. Figure 1 is a structural schematic diagram of one battery charging adapter system provided by this application, Figure 2 is a structural schematic diagram of one battery pack provided by this application, Figure 3 is a structural schematic diagram of another battery charging adapter system provided by this application, and Figure 4 is a structural schematic diagram of yet another battery charging adapter system provided by this application. Referring to Figures 1 to 4, the battery charging adapter system 100 includes: a first battery pack 10 with a first battery terminal 11 having a charging and discharging port; a first charging device 30 with a first charging terminal 31 having a charging port 20 having a charging port 20; and a first conversion device 40 with a first conversion interface 41 that can be electrically connected to the first battery terminal 11, and a second conversion interface 42 that can be electrically connected to the first charging terminal 31. When the second conversion interface 42 is electrically connected to the first charging terminal 31 and the first conversion interface 41 is connected to the first battery terminal 11, the first charging device 30 can charge the first battery pack 10.

[0049] Specifically, the charging and discharging port of the first battery pack 10 can be understood as the same port used for charging and discharging. In some embodiments, the first battery terminal 11 is configured to transmit charging energy for the first battery pack and discharging energy output by the first battery pack. This enables the design of the first battery pack 10 having a charging and discharging port.

[0050] In some embodiments, the charging / discharging port of the first battery pack 10 can be a discrete port with the positive and negative terminals independently configured. In other embodiments, the charging / discharging port of the first battery pack 10 can be a Type-C port with the positive and negative terminals integrated.

[0051] In some embodiments, the first battery terminal 11 includes at least a first positive terminal P1, a first negative terminal N1, and a first communication terminal D1, wherein the first positive terminal P1, the first negative terminal N1, and the first communication terminal D1 are discrete terminals. When charging the first battery pack 10, the first positive terminal P1 and the first negative terminal N1 receive a positive power signal and a negative power signal, respectively. When the first battery pack 10 is electrically connected to a load for discharging, the first positive terminal P1 and the first negative terminal N1 output a positive power signal and a negative power signal, respectively. That is, the first battery pack 10 uses the same positive terminal for both charging and discharging, making it a battery pack with a single charging and discharging port. For example, Figure 5 is a schematic diagram of another battery charging adapter system provided in this application. As shown in Figure 5, in some other embodiments, the first battery terminal 11 may also include a discretely disposed first temperature terminal T1.

[0052] The first charging device 30 is a non-port charging device, having a first charging terminal 31 for charging the second battery pack 20 with a non-port charging / discharging connection. It is understood that, unlike a device with a common charging / discharging port, a non-port charging / discharging connection refers to two different ports used for charging and discharging. The first charging terminal 31 is correspondingly configured to connect directly to the charging port of the second battery pack 20, enabling direct charging of the second battery pack 20.

[0053] In some embodiments, the second battery pack 20 has a second battery terminal 21 with a charging and discharging port, the second battery terminal 21 including at least a charging positive terminal P2 and a discharging positive terminal P3; the first charging terminal 31 can be electrically connected to the charging positive terminal P2 of the second battery pack 20.

[0054] The charging positive terminal P2 and the discharging positive terminal P3 can be discrete terminals. It is understood that, in addition to the charging positive terminal P2 and the discharging positive terminal P3, the second battery terminal 21 may also include a discretely configured second negative terminal N2, a second communication terminal D2, and a second temperature terminal T2. When charging the second battery pack 20, the charging positive terminal P2 and the second negative terminal N2 receive positive and negative power signals, respectively. When the second battery pack 20 is electrically connected to a load for discharging, the discharging positive terminal P3 and the second negative terminal N2 output positive and negative power signals, respectively. That is, the second battery pack 20 uses two different positive terminals for charging and discharging, making it a battery pack with separate charging and discharging terminals.

[0055] The second battery terminal 21 of the second battery pack 20 can be an electrode plate interface, which can be directly plugged into the first charging terminal 31 of the first charging device 30. The electrode plate interface includes multiple electrode plates, each serving as the charging positive terminal P2, discharging positive terminal P3, second negative terminal N2, second communication terminal D2, and second temperature terminal T2 of the second battery terminal 21, and can be in the form of clips or contacts. The first charging terminal 31 of the first charging device 30 can include at least a first positive interface P01 designed to cooperate with the charging positive terminal P2, a first negative interface N01 designed to cooperate with the second negative terminal N2, a first communication interface D01 designed to cooperate with the second communication terminal D2, and a first temperature interface T01 designed to cooperate with the second temperature terminal T2. The second battery pack 20 and the first charging device 30 can be directly plugged in and detached. After the second battery pack 20 and the first charging device 30 are directly plugged in and assembled, the positive charging terminal P2 is connected to the first positive interface P01, the second negative terminal N is connected to the first negative interface N01, the second communication terminal D2 is connected to the first communication interface D01, and the second temperature terminal T2 is connected to the first temperature interface T01. Thus, the second battery pack 20 can be charged by the first charging device 30, and the first charging device 30 can communicate with the second battery pack 20 and perform temperature detection on the second battery pack 20.

[0056] Referring to Figures 1-5, since the first battery pack 10 uses the same charging / discharging port while the second battery pack 20 uses a different port, the first battery terminal 11 of the first battery pack 10 has one less terminal than the second battery terminal 21 of the second battery pack 20. This results in different positions for the first positive terminal P1 of the first battery pack 10 used for charging / discharging and the second positive terminal P2 of the second battery pack used for charging. Therefore, the first positive interface P01 of the first charging terminal 31 of the first charging device (i.e., the first charging device 30) adapted to the second battery pack 20 cannot be directly electrically connected to the first battery pack 10 because the positions of the first positive terminal P1 of the first charging terminal 31 are not compatible.

[0057] To enable the first charging device 30 (using a different charging port) to charge the first battery pack 10 (using the same charging / discharging port), a first conversion device 40 can be used to convert the interfaces. Specifically, the first conversion device 40 includes a first conversion interface 41 and a second conversion interface 42. The first conversion interface 41 is electrically connected to the first battery terminal 11 of the first battery pack 10, and the second conversion interface 42 is electrically connected to the first charging terminal 31 of the first charging device 30. Thus, with the second conversion interface 42 connected to the first charging terminal 31 of the first charging device 30, and the first conversion interface 41 connected to the first battery terminal 11 of the first battery pack 10, the first battery pack 10 and the first charging device 30 can be indirectly electrically connected via the first conversion device 30. This allows the first charging device 30 to transmit electrical energy to the first battery pack 10 through the first conversion device 40, thereby charging the first battery pack 10.

[0058] For example, the first conversion interface 41 may include a first positive conversion interface Pa1, a first negative conversion interface Na1, a first communication conversion interface Da1, and a first temperature conversion interface Ta1 designed to cooperate with the first positive terminal P1, the first negative terminal N1, the first communication terminal D1, and the first temperature terminal T1 in the first battery terminal 11. This allows the first conversion interface 41 to cooperate with the first battery terminal 11 of the first battery pack 10 to achieve electrical connection. Similarly, the second conversion interface 42 may include a second positive conversion interface Pa2, a second negative conversion interface Na2, a second communication conversion interface Da2, and a second temperature conversion interface Ta2 designed to cooperate with the first positive interface P01, the first negative interface N01, the first communication interface D01, and the first temperature interface T01 in the first charging terminal 31. This allows the second conversion interface 42 to cooperate with the first charging terminal 31 of the first charging device 30 to achieve electrical connection.

[0059] The battery charging adapter system provided in this application enables a first charging device with a different charging port to charge a first battery pack with a same charging and discharging port. A first conversion device provides a conversion interface between the first charging device and the first battery pack. This first conversion device includes a first conversion interface electrically connected to the first battery terminal and a second conversion interface electrically connected to the first charging terminal. When the second conversion interface is electrically connected to the first charging terminal of the first charging device, and the first conversion interface is connected to the first battery terminal of the first battery pack, the first charging device can charge the first battery pack through the first conversion device. This solves the problem of incompatibility between the charging device with a different charging port and the battery pack with a same charging and discharging port. The first conversion device can balance the transition of the battery pack from a same charging and discharging port design to a different charging and discharging port design, thus improving the user experience.

[0060] In some embodiments, the first battery terminal 11 of the first battery pack 10 is configured as an electrode plate interface, and the first battery terminal 11 is directly connected to the first conversion interface 41. The electrode plate interface includes multiple electrode plates, each of which serves as the first positive terminal P1, the first negative terminal N1, the first communication terminal D1, and the first temperature terminal T1 of the first battery terminal 11, and can be in the form of clips or contacts. The first conversion interface 41 is designed to work in conjunction with the first battery terminal 11, so that after the first battery pack 10 and the first conversion device 40 are directly assembled, the first positive terminal P1, the first negative terminal N1, the first communication terminal D1, and the first temperature terminal T1 of the first battery terminal 11 are respectively connected to the first positive conversion interface Pa1, the first negative conversion interface Na1, the first communication conversion interface Da1, and the first temperature conversion interface Ta1 of the first conversion interface 41, thus achieving electrical connection between the first battery terminal 11 and the first conversion interface 41.

[0061] In some embodiments, the second conversion interface 42 is configured as an electrode plate type interface, and the second conversion interface 42 is directly connected to the first charging terminal 31. The electrode plate type interface includes multiple electrode plates, each of which serves as the second positive conversion interface Pa2, the second negative conversion interface Na2, the second communication conversion interface Da2, and the second temperature conversion interface Ta2 of the second conversion interface 42, and can be in the form of clips or contacts. The second conversion interface 42 is designed to cooperate with the first charging terminal 31 of the first charging device 30, such that after the second conversion interface 42 and the first charging device 30 are directly assembled, the second positive conversion interface Pa2, the second negative conversion interface Na2, the second communication conversion interface Da2, and the second temperature conversion interface Ta2 are respectively connected to the first positive interface P01, the first negative interface N01, the first communication interface D01, and the first temperature interface T01 in the first charging terminal 31, thus realizing the electrical connection between the second conversion interface 42 and the first charging terminal 31.

[0062] In some embodiments, the first conversion interface 41 and the second conversion interface 42 are electrically connected via a conductive element. This conductive element can be a power cord, a metal sheet, or a metal strip, or other low-loss or lossless conductive component. Thus, the electrical connection between the first conversion interface 41 and the second conversion interface 42 can be achieved via a power cord, allowing the electrical signal received by the second conversion interface 42 to be transmitted to the first conversion interface 41 via the conductive element. When the first conversion interface 41 is electrically connected to the first battery terminal 11 of the first battery pack 10, and the second conversion interface 42 is electrically connected to the first charging terminal 31 of the first charging device 30, the first charging device 30 can be indirectly electrically connected to the first battery pack 10 via the first conversion device 40, enabling the first charging device 30 (which charges via different ports) to charge the first battery pack 10 (which charges via the same port).

[0063] For example, the first conversion interface 41 and the second conversion interface 42 are electrically connected by a power line. Specifically, a power line can be connected between the first positive conversion interface Pa1 and the second positive conversion interface Pa2, between the first negative conversion interface Na1 and the second negative conversion interface Na2, between the first communication conversion interface Da1 and the second communication conversion interface Da2, and between the first temperature conversion interface Ta1 and the second temperature conversion interface Ta2.

[0064] In other embodiments, the first conversion interface 41 and the second conversion interface 42 can be two ends of the electrode strip, respectively. That is, the first conversion interface 41 can be integrally formed with the conductive element, or the second conversion interface 42 can be integrally formed with the conductive element, or the first conversion interface 41, the second conversion interface 42, and the conductive element can be integrally formed. Specifically, the first positive conversion interface Pa1 and the second positive conversion interface Pa2 are two terminals of one electrode strip, the first negative conversion interface Na1 and the second negative conversion interface Na2 are two terminals of one electrode strip, the first communication conversion interface Da1 and the second communication conversion interface Da2 are two terminals of one electrode strip, and the first temperature conversion interface Ta1 and the second temperature conversion interface Ta2 are two terminals of one electrode strip.

[0065] In some embodiments, the first battery terminal 11 of the first battery pack 10 is configured to be pluggably mounted to a power tool to power the power tool. The power tool includes at least one of a handheld tool, a benchtop tool, a manned work vehicle, an electric fan, and a lighting device.

[0066] In some embodiments, the minimum charging current that the conductive element of the first conversion interface 41 or the second conversion interface 42 or between the two can withstand is greater than or equal to 5A, or greater than or equal to 8A, or greater than or equal to 10A, or greater than or equal to 15A.

[0067] Based on the same inventive concept, this application also provides a battery charging adapter system that can solve the problem that charging devices with the same charging port cannot match the interfaces of battery packs with different charging ports, thus enabling charging devices with the same charging port to charge battery packs with different charging ports. Figure 6 is a structural schematic diagram of another battery charging adapter system provided in this application, Figure 7 is a structural schematic diagram of a first battery pack provided in this application, and Figures 8, 9 and 10 are schematic diagrams of the result of another battery charging adapter system provided in this application. Referring to Figures 6 to 10, the battery charging adapter system 100 includes: a second battery pack 20, a second battery terminal 21 with separate charging and discharging ports, the second battery terminal 21 including a discrete charging positive terminal P2 and a discharging positive terminal P3; a second charging device 50, a second charging terminal 51 having a charging port for charging the first battery pack 10; and a second conversion device 60, having a third conversion interface 61 that can be electrically connected to the second battery terminal 21, and a fourth conversion interface 62 that can be electrically connected to the second charging terminal 51; when the fourth conversion interface 62 is electrically connected to the second charging terminal 51 and the third conversion interface 61 is connected to the second battery terminal 21, the second charging device 50 can charge the second battery pack 20.

[0068] The design of the first battery terminal 11 of the first battery pack 10 and the second battery terminal 21 of the second battery pack 20 can be the same as in the aforementioned embodiments, and will not be described again here.

[0069] Specifically, the second charging device 50 is a same-port charging device, and its second charging terminal 51 can cooperate with the first battery terminal 11 of the first battery pack 10, and can be directly electrically connected to the first battery terminal 11 of the first battery pack 10 to charge the first battery pack 10. For example, when the first battery terminal 11 includes a first positive terminal P1, a first negative terminal P2, a first communication terminal D1 and a first temperature terminal T1, the second charging terminal 51 may include a second positive interface P02 designed to cooperate with the first positive terminal P1, a second negative interface N02 designed to cooperate with the first negative terminal P2, a second communication interface D02 designed to cooperate with the first communication terminal D1, and a second temperature interface T02 designed to cooperate with the first temperature terminal T1. The first battery pack 10 and the second charging device 50 can be directly connected and disconnected. After the first battery pack 10 and the second charging device 50 are directly connected, the first positive terminal P1 is connected to the second positive interface P02, the first negative terminal P2 is connected to the second negative interface N02, the first communication terminal D1 is connected to the second communication interface D02, and the first temperature terminal T1 is connected to the second temperature interface T02. This allows the second charging device 50 to charge the first battery pack 10, communicate with the first battery pack 10, and perform temperature detection on the first battery pack 10.

[0070] Referring to Figures 6-10, since the first battery pack 10 uses the same charging / discharging port while the second battery pack 20 uses a different port, the first battery terminal 11 of the first battery pack 10 has one less terminal than the second battery terminal 21 of the second battery pack 20. This results in different positions for the first positive terminal P1 of the first battery pack 10 used for charging / discharging and the second positive terminal P2 of the second battery pack used for charging. Therefore, the second positive interface P02 of the second charging terminal 51 of the same-port charging device (i.e., the second charging device 50) adapted to the first battery pack 10 cannot be matched with the position of the charging positive terminal P2 of the second battery pack 20, preventing the second charging device 50 from being directly electrically connected to the second battery pack 20.

[0071] To enable the second charging device 50, which uses the same charging port, to charge the second battery pack 20, which uses a different charging / discharging port, a second conversion device 60 can be used to convert the interfaces. Specifically, the second conversion device 60 includes a third conversion interface 61 and a fourth conversion interface 62. The third conversion interface 61 can be electrically connected to the second battery terminal 21 of the second battery pack 20, and the fourth conversion interface 62 can be electrically connected to the second charging terminal 51 of the second charging device 50. Thus, with the fourth conversion interface 62 electrically connected to the second charging terminal 51 and the third conversion interface 61 connected to the second battery terminal 21, the second charging device 50 and the second battery pack 20 can be indirectly electrically connected through the second conversion device 60, allowing the second charging device 50 to transfer electrical energy to the second battery pack 20 and charge it.

[0072] In some embodiments, the third conversion interface 61 is configured to connect to the charging positive terminal P2 of the second battery terminal 21 to transmit the charging energy output by the second charging device 50. In this way, the charging energy output by the second charging device 50 can be transmitted to the second battery pack 20 via the second conversion device 60, enabling the second charging device 50 to charge the second battery pack 20.

[0073] For example, the third conversion interface 61 may include a third positive conversion interface Pa3, a third negative conversion interface Na3, a third communication conversion interface Da3, and a third temperature conversion interface Ta3 designed to cooperate with the charging positive terminal P2, the second negative terminal N2, the second communication terminal D2, and the second temperature terminal T2 in the second battery terminal 21. This allows the third conversion interface 61 to cooperate with the second battery terminal 21 of the second battery pack 20 to achieve electrical connection. Similarly, the fourth conversion interface 62 may include a fourth positive conversion interface Pa4, a fourth negative conversion interface Na4, a fourth communication conversion interface Da4, and a fourth temperature conversion interface Ta4 designed to cooperate with the second positive interface P02, the second negative interface N02, the second communication interface D02, and the second temperature interface T02 in the second charging terminal 51. This allows the fourth conversion interface 62 to cooperate with the second charging terminal 51 of the second charging device 50 to achieve electrical connection.

[0074] The battery charging adapter system provided in this application enables a second charging device with the same charging port to charge a second battery pack with a different charging / discharging port. A second conversion device provides a conversion interface between the second charging device and the second battery pack. This second conversion device includes a third conversion interface electrically connected to the second battery terminal and a fourth conversion interface electrically connected to the second charging terminal. When the fourth conversion interface is electrically connected to the second charging terminal of the second charging device, and the third conversion interface is connected to the second battery terminal of the second battery pack, the second charging device can charge the second battery pack through the second conversion device. This solves the problem of incompatibility between the same-port charging device and the battery pack with different charging / discharging ports. The second conversion device can balance the transition of the charging device from a same-port charging design to a different-port charging design, thus improving the user experience.

[0075] In some embodiments, the second battery terminal 21 is configured as an electrode plate interface, and the second battery terminal 21 and the third conversion interface 61 are connected by a direct plug-in connection.

[0076] The design of the third conversion interface 61, which is an electrode plate interface, is the same as in the previous embodiment and will not be described again here. The third conversion interface 61 is designed to work in conjunction with the second battery terminal 21, so that after the second battery pack 20 and the second conversion device 60 are directly assembled, the charging positive terminal P2, the second negative terminal N2, the second communication terminal D2, and the second temperature terminal T2 in the second battery terminal 21 are respectively connected to the third positive conversion interface Pa3, the third negative conversion interface Na3, the third communication conversion interface Da3, and the third temperature conversion interface Ta3 in the third conversion interface 61, thereby realizing the electrical connection between the second battery terminal 21 and the third conversion interface 61.

[0077] In some embodiments, the fourth conversion interface 62 is configured as an electrode plate type interface, and the fourth conversion interface 62 is directly connected to the second charging terminal 51. The electrode plate type interface includes multiple electrode plates, each of which serves as the fourth positive conversion interface Pa4, fourth negative conversion interface Na4, fourth communication conversion interface Da4, and fourth temperature conversion interface Ta4 of the fourth conversion interface 62, and can be in the form of clips or contacts. The fourth conversion interface 62 is designed to cooperate with the second charging terminal 51 of the second charging device 50, such that after the fourth conversion interface 62 and the second charging device 50 are directly assembled, the fourth positive conversion interface Pa4, fourth negative conversion interface Na4, fourth communication conversion interface Da4, and fourth temperature conversion interface Ta4 are respectively connected to the second positive interface P02, second negative interface N02, second communication interface D02, and second temperature interface T02 in the second charging terminal 51, realizing the electrical connection between the fourth conversion interface 62 and the second charging terminal 51.

[0078] In some embodiments, a power cable is connected between the third conversion interface 61 and the fourth conversion interface 62. This allows for electrical connection between the third conversion interface 61 and the fourth conversion interface 62 via the power cable, enabling the electrical signals received by the fourth conversion interface 62 to be transmitted to the third conversion interface 641 via the power cable. When the third conversion interface 61 is electrically connected to the first battery terminal 21 of the second battery pack 20, and the fourth conversion interface 62 is electrically connected to the second charging terminal 51 of the second charging device 50, the second charging device 50 can be indirectly electrically connected to the second battery pack 20 via the second conversion device 60, allowing the second charging device 50 (using the same charging port) to charge the second battery pack 20 (using a different charging port).

[0079] For example, the third conversion interface 61 and the fourth conversion interface 62 are electrically connected by a power line. Specifically, a power line can be connected between the third positive conversion interface Pa3 and the fourth positive conversion interface Pa4, between the third negative conversion interface Na3 and the fourth negative conversion interface Na4, between the third communication conversion interface Da3 and the fourth communication conversion interface Da4, and between the third temperature conversion interface Ta3 and the fourth temperature conversion interface Ta4.

[0080] In other embodiments, the third conversion interface 61 and the fourth conversion interface 62 can be two ends of the electrode strip, respectively. Specifically: the third positive conversion interface Pa3 and the fourth positive conversion interface Pa4 are two terminals of an electrode strip; the third negative conversion interface Na3 and the fourth negative conversion interface Na4 are two terminals of an electrode strip; the third communication conversion interface Da3 and the fourth communication conversion interface Da4 are two terminals of an electrode strip; and the third temperature conversion interface Ta3 and the fourth temperature conversion interface Ta4 are two terminals of an electrode strip.

[0081] In some embodiments, the positive discharge terminal P3, the second negative terminal N2, the second communication terminal D2, and the second temperature terminal T2 of the second battery pack 20 are configured to be pluggably mounted to a power tool to power the power tool. The power tool includes at least one of a handheld tool, a benchtop tool, a manned work vehicle, an electric fan, and a lighting device.

[0082] In some embodiments, the minimum charging current that the conductive element of the third conversion interface 61 or the fourth conversion interface 62 or between the two can withstand is greater than or equal to 5A, or greater than or equal to 8A, or greater than or equal to 10A, or greater than or equal to 15A.

[0083] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A battery charging adapter system, comprising: The first battery pack has a first battery terminal with a charging and discharging port; The first charging device has a first charging terminal for charging a second battery pack with a charging / discharging port. The first conversion device has a first conversion interface that can be electrically connected to the first battery terminal, and a second conversion interface that can be electrically connected to the first charging terminal. The first conversion device is configured as follows: When an electrical connection is established between the first charging terminal and the first battery terminal, the first charging device can charge the first battery pack through the first conversion device.

2. The battery charging adapter system according to claim 1, wherein, The first battery terminal is configured to transmit charging energy for charging the first battery pack and discharging energy output by the first battery pack.

3. The battery charging adapter system according to claim 1, wherein, The first battery terminal is configured to be pluggably installed into the power tool to supply power to the power tool.

4. The battery charging adapter system according to claim 1, wherein, The first battery terminal is configured as an electrode plate interface, and the first battery terminal is connected to the first conversion interface in a direct plug-in manner.

5. The battery charging adaptation system of claim 1, wherein, The second conversion interface is configured as an electrode plate interface, and the second conversion interface is connected to the first charging terminal in a direct plug-in manner.

6. The battery charging adaptation system of claim 1, wherein, The first battery terminal includes at least a first positive terminal, a first negative terminal, and a first communication terminal, wherein the first positive terminal, the first negative terminal, and the first communication terminal are configured as discrete terminals.

7. The battery charging adaptation system of claim 1, wherein, The second battery pack has a second battery terminal with separate charging and discharging ports, the second battery terminal including at least a charging positive terminal and a discharging positive terminal; the first charging terminal can be electrically connected to the charging positive terminal of the second battery pack.

8. The battery charging adaptation system of claim 1, wherein, The first conversion interface and the second conversion interface are electrically connected through a conductive component.

9. The battery charging adaptation system of claim 8, wherein, The conductive component includes a power cord or a metal sheet.

10. The battery charging adaptation system of claim 8, wherein, The conductive component is integrally formed with the first conversion interface or with the second conversion interface.

11. The battery charging adaptation system of claim 8, wherein, The minimum charging current that the first conversion interface, the second conversion interface, or the conductive element can withstand is greater than or equal to 5A.

12. A battery charging adapter system, comprising: The second battery pack has a second battery terminal with separate charging and discharging ports, the second battery terminal including a discrete charging positive terminal and a discharging positive terminal; The second charging device has a second charging terminal for charging the first battery pack with a charging and discharging port. The second conversion device has a third conversion interface that can be electrically connected to the second battery terminal, and a fourth conversion interface that can be electrically connected to the second charging terminal. The second conversion device is configured as follows: When it establishes an electrical connection between the second charging terminal and the second battery terminal, the second charging device can charge the second battery pack through the second conversion device.

13. The battery charging adaptation system of claim 12, wherein, The third conversion interface is configured to connect to the positive charging terminal of the second battery to transmit the charging energy output by the second charging device.

14. The battery charging adapter system according to claim 12, wherein, The third conversion interface and the fourth conversion interface are electrically connected via conductive components.

15. The battery charging adapter system according to claim 14, wherein, The conductive component includes a power cord or a metal sheet.

16. The battery charging adapter system according to claim 14, wherein, The conductive component is integrally formed with the first conversion interface or with the second conversion interface.

17. The battery charging adapter system according to claim 15, wherein, The minimum charging current that the third conversion interface, the fourth conversion interface, or the conductive element can withstand is greater than or equal to 5A.

18. The battery charging adapter system according to claim 12, wherein, The second battery terminal is configured as an electrode plate interface, and the second battery terminal is connected to the third conversion interface in a direct plug-in manner.

19. The battery charging adapter system according to claim 12, wherein, The fourth conversion interface is configured as an electrode plate interface, and the fourth conversion interface is connected to the second charging terminal in a direct plug-in manner.

20. The battery charging adapter system according to claim 12, wherein, The discharge-charge terminal is configured to be pluggable and installed onto the power tool to supply power to the power tool.

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