Charger signal switching device of lithium battery pack

Abstract

The utility model relates to the technical field of lithium battery packs, in particular to a charger signal switching device of a lithium battery pack, which comprises a shell, and the shell is composed of an upper shell and a lower shell and is used for protecting a circuit board assembly; a convex edge is arranged on one side of the lower shell and is matched with a guide groove formed in the battery pack to be combined with the battery pack; the circuit board assembly is arranged between the upper shell and the lower shell; and the copper conducting sheet is welded on the circuit board assembly and is used for electrically connecting the battery packs. Compared with the prior art, the circuit board assembly has the advantages that the copper conducting sheets are matched with the battery pack slots, so that the copper conducting sheets are in contact with the copper sheets in the slots, electrical connection between the circuit board assembly and the battery pack is completed, a DC charger is inserted into the charging interface, the battery pack is charged, and a general conventional DC charger is used in a matched mode, so that the cost is reduced; and more special chargers do not need to be carried during outdoor work, so that the use is more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery packs, and in particular to a charger signal adapter for a lithium battery pack. Background Art

[0002] With the development of science and technology and the improvement of environmental protection requirements, power tools are becoming more and more popular and most of them use rechargeable lithium battery packs as power sources. However, due to the large number of power tool brands on the market, the specifications, charging interfaces and communication protocols of lithium battery packs of different brands are different, which leads to users often needing to equip themselves with multiple dedicated chargers or charging bases during use. This not only increases the economic burden of users, but also brings inconvenience to actual operations, especially when working outdoors or traveling, it is extremely inconvenient to carry multiple dedicated chargers.

[0003] In this regard, the present application proposes a charger signal adapter for a lithium battery pack to solve this problem. Summary of the invention

[0004] The purpose of this application is to solve at least one of the technical deficiencies.

[0005] To this end, one purpose of the present application is to propose a charger signal adapter for a lithium battery pack to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the present application provides a charger signal adapter device for a lithium battery pack, including a shell, wherein the shell is composed of an upper shell and a lower shell, and is used to protect the circuit board assembly; a convex edge is provided on one side of the lower shell, which cooperates with a guide groove provided on the battery pack to combine it with the battery pack; a circuit board assembly is installed in the middle of the upper shell and the lower shell; a copper guide plate is welded on the circuit board assembly, and is used to electrically connect the battery packs; a charging interface is welded on the circuit board assembly, and the charging interface is a DC interface, which is used to adapt to a conventional DC charger.

[0007] Preferably, in any of the above schemes, the lower shell is detachably connected to one end of the upper shell by screws.

[0008] Preferably, any of the above schemes is that a protrusion is fixedly provided on one side of the lower shell, one side of the protrusion is arranged at one end of the charging interface, and a through hole is opened on the protrusion for connecting to the charging interface.

[0009] Preferably, any of the above schemes is that a groove is provided at one end of the upper shell, the inside of the groove is snap-fitted to one side of the protrusion, a through groove is provided on one side of the upper shell, one side of the through groove is a slope, the through groove is used to facilitate the combination between the battery pack and the outer shell, and a locking groove is provided on one side of the upper shell.

[0010] Preferably, any of the above schemes is that a mounting groove is provided on one side of the lower shell, and the interior of the mounting groove is plugged into one side of the copper guide plate.

[0011] Preferably, any of the above schemes is that a battery pack is provided on one side of the shell, a guide groove is opened on one side of the battery pack, and the inside of the guide groove is clamped to one side of the convex edge.

[0012] Preferably, any of the above schemes is that a slot is provided on one side of the battery pack, a copper sheet is installed inside the slot, the inside of the slot is plugged into one side of the copper guide sheet so that the copper guide sheet contacts the copper sheet to charge the battery pack, a lock is installed on one side of the battery pack, a button is installed on one side of the battery pack, and the button and the lock are connected by connecting ribs.

[0013] Compared with the prior art, the advantages and beneficial effects of this application are:

[0014] In the present application, the copper guide is matched with the battery pack slot to make the copper guide contact with the copper sheet in the slot to complete the electrical connection between the circuit board assembly and the battery pack. The battery pack is charged by inserting the DC charger into the charging interface. A universal conventional DC charger is used in conjunction to reduce costs and alleviate the user's financial burden. There is no need to carry a large number of special chargers when working outdoors, and it is more convenient to use.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a three-dimensional schematic diagram according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the upper shell connection according to an embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of the connection of a circuit board assembly according to an embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of charging interface connection according to an embodiment of the present application;

[0021] Figure 5 It is a schematic diagram of the lock connection according to an embodiment of the present application.

[0022] In the figure: 1. outer shell, 101. upper shell, 102. lower shell, 103. flange, 104. bump, 2. circuit board assembly, 3. copper guide, 4. charging port, 5. battery pack, 6. lock, 7. button. DETAILED DESCRIPTION

[0023] like Figures 1 to 5 As shown, a charger signal adapter device for a lithium battery pack comprises a shell 1, wherein the shell 1 is composed of an upper shell 101 and a lower shell 102, a convex edge 103 is provided on one side of the lower shell 102, the lower shell 102 is detachably connected to one end of the upper shell 101 by screws, a protrusion 104 is fixedly provided on one side of the lower shell 102, one side of the protrusion 104 is arranged at one end of a charging interface 4, a through hole is provided on the protrusion 104, a groove is provided at one end of the upper shell 101, the inside of the groove is snapped to one side of the protrusion 104, a through groove is provided on one side of the upper shell 101, one side of the through groove is an inclined surface, the through groove is used to facilitate the combination between the battery pack 5 and the shell 1, and a locking groove is provided on one side of the upper shell 101.

[0024] One side of the through groove is an inclined surface, which is adapted to one side of the battery pack 5, so as to limit the combination between the housing 1 and the battery pack 5 and make them fit more closely.

[0025] Furthermore, a circuit board assembly 2 is provided on one side of the housing 1, and the circuit board assembly 2 is used for power conversion, voltage and current control, protection functions, intelligent management, and compatibility processing.

[0026] Furthermore, in order to make an electrical connection with the battery pack, a copper guide 3 is welded on the circuit board assembly 2, and one side of the copper guide 3 is plugged into the interior of the mounting groove.

[0027] Furthermore, in order to adapt to a conventional DC charger, a charging interface 4 is welded on the circuit board assembly 2, and the charging interface 4 is connected to the through hole, and the charging interface 4 is a DC interface.

[0028] Furthermore, a battery pack 5 is provided on one side of the shell 1, and a guide groove is opened on one side of the battery pack 5, and the interior of the guide groove is clamped on one side of the convex edge 103; a slot is opened on one side of the battery pack 5, and a copper sheet is installed inside the slot, and the interior of the slot is plugged into one side of the copper guide sheet 3, so that the copper guide sheet 3 contacts the copper sheet to charge the battery pack 5; a lock buckle 6 is installed on one side of the battery pack 5, and a button 7 is installed on one side of the battery pack, and the button 7 is connected to the lock buckle 6 by a connecting rib.

[0029] Note: The slot, installation indicator light, power switch and guide slot on the battery pack are all conventional technical means on the battery pack. The slot and the copper sheet inside the slot are a way to make electrical connections between power tools. The guide slot is a conventional technical method for quick disassembly and assembly between the battery pack and the power tool.

[0030] Among them, the connection relationship between the lock and the button belongs to the existing public technology. For details, please refer to the specific structure and operation method of the lock and button proposed in an electric tool battery pack with publication number CN219759821U.

[0031] A charger signal adapter for a lithium battery pack, the working principle is as follows:

[0032] When in use, first combine the shell 1 and the battery pack 5, align the through groove on one side of the upper shell 101 with one side of the battery pack 5, and align the convex edge 103 with the position of the guide groove, and push the shell 1 to make the convex edge 103 on the lower shell 102 move under the limit of the guide groove, so that the lock buckle 6 and the lock groove are locked, and the combination between the shell 1 and the battery pack 5 is completed. During this process, the copper guide plate 3 on the circuit board is inserted into the inside of the slot, and then the DC charger is inserted into the inside of the charging interface 4 and connected to the power supply, so that the battery pack 5 can be charged. Different brands of battery packs 5 can be adapted. After charging is completed, press the button 7 to make the lock buckle disengage from the inside of the lock groove, and the battery board 5 can be separated from the shell.

Claims

1. A charger signal adapter for a lithium battery pack, characterized in that: The housing comprises an upper housing and a lower housing, and is used to protect the circuit board assembly; One side of the lower shell is provided with a convex edge, which cooperates with the guide groove provided on the battery pack to combine it with the battery pack; A circuit board assembly is installed between the upper shell and the lower shell; Copper conductors, welded on the circuit board assembly, used to make electrical connections between battery packs; The charging interface is welded on the circuit board assembly, and the charging interface is a DC interface for adapting to a conventional DC charger.

2. The charger signal adapter device for a lithium battery pack according to claim 1, characterized in that: The lower shell is detachably connected to one end of the upper shell by screws.

3. The charger signal adapter device for a lithium battery pack according to claim 1, characterized in that: A protrusion is fixedly provided on one side of the lower shell, one side of the protrusion is arranged at one end of the charging interface, and a through hole is opened on the protrusion for connecting to the charging interface.

4. The charger signal adapter device for a lithium battery pack according to claim 3, characterized in that: A groove is provided at one end of the upper shell, the inside of the groove is snapped onto one side of the protrusion, a through groove is provided on one side of the upper shell, one side of the through groove is an inclined surface, the through groove is used to facilitate the combination between the battery pack and the outer shell, and a lock groove is provided on one side of the upper shell.

5. The charger signal adapter device for a lithium battery pack according to claim 1, characterized in that: A mounting groove is provided on one side of the lower shell, and the interior of the mounting groove is plugged into one side of the copper guide piece.

6. The charger signal adapter device for a lithium battery pack according to claim 1, characterized in that: A battery pack is arranged on one side of the shell, a guide groove is opened on one side of the battery pack, and the inside of the guide groove is clamped on one side of the convex edge.

7. The charger signal adapter device for a lithium battery pack according to claim 6, characterized in that: A slot is provided on one side of the battery pack, a copper sheet is installed inside the slot, the inside of the slot is plugged into one side of the copper guide sheet so that the copper guide sheet contacts the copper sheet to charge the battery pack, a lock is installed on one side of the battery pack, a button is installed on one side of the battery pack, and the button and the lock are connected by connecting ribs.

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