A rechargeable battery pack

Abstract

The utility model discloses a kind of rechargeable battery package, including shell and the electric core and charging circuit board being arranged in the shell, Type-C interface is equipped on the charging circuit board, the Type-C interface is set out the shell, current control board is also equipped in the shell, the charging circuit board with the current control board electrical interconnection, the current control board is equipped with the connecting contact of the multiple-gear switch for connecting flashlight, for according to the gear position switch signal control of flashlight the output current of electric core.The utility model, flashlight no longer needs to set control panel, rechargeable battery package is put into flashlight and can be realized multiple-grade dimming, can be directly applied to any model flashlight, reduce the development and production cost of flashlight, and facilitate supply chain management.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a rechargeable battery pack. Background Technology

[0002] Rechargeable battery packs are widely used in flashlight products. Among them, high-end flashlights such as tactical flashlights usually support multiple brightness levels. Their basic structure and implementation principle are as follows: the flashlight has a built-in control board, and different brightness levels are controlled by the control board to control the battery pack to output different currents (e.g., 2A for high brightness and 200mA for low brightness).

[0003] Because different flashlight models require different control boards, research and development and production costs are high, and supply chain management becomes more difficult. Utility Model Content

[0004] To address the aforementioned shortcomings, the technical problem to be solved by this utility model is to provide a rechargeable battery pack, thereby solving the problem that different models of flashlights in the prior art require different control boards, resulting in high R&D and production costs and increased difficulty in supply chain management.

[0005] Therefore, this application provides a rechargeable battery pack, including a housing and a battery cell and a charging circuit board disposed within the housing. The charging circuit board is provided with a Type-C interface, which extends out of the housing. A current control board is also provided inside the housing. The charging circuit board and the current control board are electrically interconnected. The current control board is provided with connection contacts for connecting a multi-speed switch of a flashlight, for controlling the output current of the battery cell according to the speed switch signal of the flashlight.

[0006] Based on the above technical solutions, the rechargeable battery pack also has a current control board inside its casing, which can be directly applied to any type of flashlight, reducing the R&D and production costs of flashlights and facilitating supply chain management.

[0007] In the above technical solution, preferably, the middle part of the housing is provided with a cell compartment, the current control board is composed of a first control board and a second control board, which are respectively arranged on both sides of the cell compartment along the axial direction of the cell, and the charging circuit board is arranged between the first control board and the cell compartment, and is electrically interconnected with the first control board.

[0008] In the above technical solution, preferably, the outer end faces of the first control board and the second control board are respectively provided with concentrically arranged metal rings, which are used to form the positive and negative terminals of the rechargeable battery pack and the connecting contact points, thus simplifying the design.

[0009] In the above technical solution, preferably, the first control board and the second control board are connected by a cable.

[0010] In the above technical solution, preferably, the housing is composed of a first half and a second half combined with each other. The inner walls of the first half and the second half are respectively provided with a first slot, a second slot and a third slot. The first control board, the second control board and the charging circuit board are respectively inserted into the first slot, the second slot and the third slot for fixation, which makes assembly quick and convenient.

[0011] As can be seen from the above technical solution, the rechargeable battery pack provided by this utility model solves the problem that different models of flashlights require different control boards, resulting in high R&D and production costs and increased difficulty in supply chain management. Compared with the prior art, this utility model has the following beneficial effects:

[0012] The rechargeable battery pack contains a charging circuit board and a current control board. The current control board has connection contacts for connecting to the multi-level switch of the flashlight, and can control the output current of the battery cells according to the flashlight's level switch signal. The flashlight no longer needs a separate control board; simply placing the rechargeable battery pack inside the flashlight enables multi-level dimming. It can be directly applied to any model of flashlight, reducing the R&D and production costs of flashlights and facilitating supply chain management. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced and explained below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the rechargeable battery pack provided by this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram showing the rechargeable battery pack from a low angle;

[0016] Figure 3 for Figure 1 The diagram shows an exploded view of the rechargeable battery pack.

[0017] Figure 4 This is a schematic diagram of the second half of the present invention;

[0018] Figure 5 This is the circuit schematic of the current control board.

[0019] Figures 1-5 The correspondence between the parts is as follows:

[0020] 10 housing, 20 battery cell, 30 current control board, 40 charging circuit board;

[0021] First half 11, second half 12, first slot 13, second slot 14, third slot 15;

[0022] First control board 31, second control board 32, cable 33;

[0023] Type-C interface 41. Detailed Implementation

[0024] Existing high-end flashlights support multiple dimming levels, controlled by an internal control panel. However, different flashlight models require dedicated control panels (with customized output current), which has the following drawbacks:

[0025] (1) High research and development and production costs.

[0026] Repetitive circuit design: Each flashlight requires a separate development of the driver circuit, which increases the R&D cycle and manpower costs (such as reselecting ICs and re-laying out PCBs).

[0027] Component procurement is complex: different current requirements lead to a variety of component specifications (such as MOSFETs, inductors, and sampling resistors), making it difficult to purchase in bulk to reduce costs.

[0028] (2) Supply chain management becomes more difficult.

[0029] Inventory pressure: Multiple control boards need to be stocked for different models, which ties up capital and storage space.

[0030] Compatibility risk: If a certain model is discontinued, it may result in a waste of dedicated control board inventory.

[0031] In this application, the battery pack has a built-in charging circuit board and current control board, which can be directly installed in a flashlight. The current output of the battery pack is controlled by the PWM signal output from the multi-speed switch on the flashlight. Therefore, the flashlight does not need to have a control board. The battery pack can be directly used in any model of flashlight, which reduces the R&D and production costs of flashlights and facilitates supply chain management.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] To provide a clearer explanation and description of the technical solution and implementation method of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0034] It should be noted that the directional terms such as "inner" and "outer", "front" and "back" and "left" and "right" in this article are based on the product's usage status. Obviously, the use of these directional terms does not limit the scope of protection of this solution.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the present invention provides a rechargeable battery pack, including a housing 10 and battery cells 20, a current control board 30, and a charging circuit board 40 disposed within the housing 10. The current control board 30 and the charging circuit board 40 are electrically interconnected.

[0036] The housing 10 is composed of a first half 11 and a second half 12 assembled together. A cell compartment is provided in the middle of the housing 10, and the cell 20 is disposed in the cell compartment.

[0037] The current control board 30 is provided with connection contacts for connecting the multi-position switch of the flashlight, and for controlling the output current of the battery cell 20 according to the position switch signal of the flashlight.

[0038] In this invention, the current control board 30 consists of a first control board 31 and a second control board 32, which are connected by a cable 33. The first control board 31 and the second control board 32 are respectively arranged on both sides of the battery cell compartment along the axial direction of the battery cell 20. The outer end faces of the first control board 31 and the second control board 32 are respectively provided with concentrically arranged metal rings, which are used to form the positive and negative terminals of the rechargeable battery pack and the connection contacts for connecting the multi-position switch of the flashlight.

[0039] The charging circuit board 40 is equipped with a Type-C interface 41, which extends out of the first half-body 11. The charging circuit board 40 is located between the first control board 31 and the cell compartment, and is electrically interconnected with the first control board 31 for controlling the charging of the cell 20. The charging circuit board 40 adopts existing technology and will not be described in detail here.

[0040] The inner walls of the first half 11 and the second half 12 are respectively provided with a first slot 13, a second slot 14 and a third slot 15. The first control board 31, the second control board 32 and the charging circuit board 40 are respectively inserted into the first slot 13, the second slot 14 and the third slot 15 for fixation. Since screws are not required for fixation, the assembly process is simplified.

[0041] like Figure 5 As shown, the Figure 5 This is the circuit schematic of the current control board.

[0042] The current control board includes an MCU microprocessor U3 and a field-effect transistor U2 (MOSEFT). For example, U3 may be an ATtiny4 / 5 / 9 / 10SOT-23. The PA1 pin of microprocessor U3 is connected to the multi-speed switch of the flashlight. The PA0 pin of microprocessor U3 is connected to the positive terminal BAT+ of battery cell 20 via resistors R1 and R2. The positive terminal of battery cell 20 is also connected to the source (S) terminal of field-effect transistor U2. The drain (D) terminal of field-effect transistor U2 is connected to the positive terminal of the rechargeable battery pack. The PA5 pin of microprocessor U3 is connected to the negative terminal of the rechargeable battery pack and includes a voltage acquisition circuit composed of resistors R4 and R5. The GND pin of microprocessor U3 is grounded and includes a filter capacitor C3. The VDD pin of microprocessor U3 is connected to the positive terminal of battery cell 20 to power microprocessor U3.

[0043] The working principle of the current control board is as follows:

[0044] U3 is the main control MCU, and PA1 is the external control signal, which can be connected to the multi-speed switch of a flashlight or an external MCU. U3 receives external control signals (level signals or protocol-containing industrial data streams) through PA1 and outputs corresponding control signals from PA0 to control the drain of U2 (MOSEFT) to output the final drive signal to drive the LED board. PA5 is connected to the feedback sampling signal. U3 obtains the current in the load circuit by sampling the voltage across R5 and R4, and further adjusts the output of PA0 to control the circuit.

[0045] Based on the above description of specific embodiments, the rechargeable battery pack provided by this utility model has the following advantages compared with the prior art:

[0046] First, the rechargeable battery pack integrates a current control board, which can be directly installed in the flashlight. The PWM signal output of the battery pack is used to control the current output of the flashlight by using the multi-speed switch on the flashlight. Therefore, the flashlight does not need to set up a control board. The battery pack can be directly used in any model of flashlight, which reduces the research and development and production costs of flashlights and facilitates supply chain management.

[0047] Secondly, the first control board, the second control board, and the charging circuit board are respectively inserted into the first slot, the second slot, and the third slot inside the housing and fixed, without the need for screws, which simplifies the assembly process and facilitates maintenance.

[0048] Third, the positive and negative output terminals of the rechargeable battery pack, as well as the connection terminals for connecting control signals, are all integrated on the first and second control boards, simplifying the design and assembly process.

[0049] Finally, it should be noted that the terms "comprising," "including," or any other variations thereof as used herein 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 a…" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] This utility model is not limited to the above-described preferred embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model.

Claims

1. A rechargeable battery pack, comprising a housing and battery cells and a charging circuit board disposed within the housing, wherein the charging circuit board has a Type-C interface extending through the housing, characterized in that, The housing also contains a current control board, and the charging circuit board is electrically interconnected with the current control board. The current control board is provided with connection contacts for connecting the multi-position switch of the flashlight, and is used to control the output current of the battery cell according to the position switch signal of the flashlight.

2. The rechargeable battery pack according to claim 1, characterized in that, The housing has a cell compartment in the middle. The current control board consists of a first control board and a second control board, which are respectively arranged on both sides of the cell compartment along the axial direction of the cell. The charging circuit board is arranged between the first control board and the cell compartment and is electrically interconnected with the first control board.

3. The rechargeable battery pack according to claim 2, characterized in that, The outer end faces of the first control board and the second control board are respectively provided with concentric metal rings, which are used to form the positive and negative terminals of the rechargeable battery pack and the connection contact points.

4. The rechargeable battery pack according to claim 2, characterized in that, The first control board and the second control board are connected by a cable.

5. The rechargeable battery pack according to claim 2, characterized in that, The housing is composed of a first half and a second half. The inner walls of the first half and the second half are respectively provided with a first slot, a second slot and a third slot. The first control board, the second control board and the charging circuit board are respectively inserted into the first slot, the second slot and the third slot and fixed.

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