Removable battery pack

Abstract

The application provides a detachable battery pack and relates to the technical field of energy storage batteries. The detachable battery pack comprises a shell, a battery cell arranged in the shell, and a locking piece and an electric quantity display assembly arranged on the shell. The locking piece comprises a button, a connecting part and a locking part. The connecting part is connected with the button and the locking part respectively. The shell is provided with a first through hole and a second through hole. The button moves in a preset direction in the first through hole. The locking part moves in a preset direction in the second through hole. The electric quantity display assembly comprises at least two electric quantity display lamps electrically connected with the battery cell. A light shielding plate is arranged between two adjacent electric quantity display lamps. The light shielding plate extends into the first through hole. A guide channel is formed between the side wall of the light shielding plate and the inner wall of the first through hole. Part of the button is movably arranged in the guide channel. The guide channel is used for guiding the button to move in the preset direction. The battery pack can improve the stability of the movement of the locking piece, thereby improving the reliability of the locking and unlocking operation.

Description

Technical Field

[0001] This application relates to the field of energy storage battery technology, and more specifically, to a detachable battery pack. Background Technology

[0002] Removable battery packs are widely used because they can be separated from power tools. Multiple battery packs can be used in rotation to power the power tools during use. When charging, you only need to remove the battery pack and connect it to the charger to charge. This will not interfere with the continued use of the power tools.

[0003] Removable battery packs typically feature a locking mechanism on the housing, consisting of a button and a locking element that mates with the power tool. Pressing the button retracts the locking element into the housing. A reset mechanism is located below the locking element; releasing the button causes the locking element to extend out of the housing and engage with the power tool, thus securing the battery pack to the tool. However, existing removable battery packs typically use a through-hole in the housing to guide the locking element's movement. This method is not stable enough and can lead to the locking element wobbling. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of the prior art by providing a detachable battery pack that utilizes a light-blocking plate inside the housing to cooperate with the housing and limit the locking mechanism, thereby improving the movement stability of the locking mechanism and thus enhancing the reliability of locking and unlocking operations.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] This application provides a detachable battery pack, including: a housing, battery cells disposed within the housing, and a locking member and a power display assembly disposed on the housing; the locking member includes: a button, a connecting part, and a locking part, the connecting part being connected to the button and the locking part respectively, the housing having a first through hole and a second through hole, the button moving in a preset direction within the first through hole, and the locking part moving in a preset direction within the second through hole; the power display assembly includes: at least two power indicator lights electrically connected to the battery cells, a light-blocking plate being disposed between two adjacent power indicator lights, the light-blocking plate extending into the first through hole, a guide channel being formed between the side wall of the light-blocking plate and the inner wall of the first through hole, a portion of the button being movably disposed within the guide channel, the guide channel being used to guide the button to move in a preset direction.

[0007] Optionally, the side wall of the light shield facing the button is divided into a first area and a second area connected to the first area. The first area is parallel to a preset direction, and the second area is set at an angle to the preset direction. The second area is used to increase the entrance of the guide channel.

[0008] Optionally, the power display component further includes: a power display window, which is disposed on the housing, and a light shield abuts against the power display window to divide the power display window into at least two windows, the at least two windows corresponding one-to-one with the positions of at least two power display lights.

[0009] Optionally, the light-blocking plate includes: a first light-blocking part, a second light-blocking part, and a guide part. The first light-blocking part and the guide part are respectively connected to the second light-blocking part. The first light-blocking part is located inside the power display window. The second light-blocking part is located between two adjacent power display lamps and abuts against the power display window. The guide part is opposite to the inner wall of the first through hole. The vertical distance between the side wall of the guide part and the inner wall of the first through hole is greater than the vertical distance between the side wall of the second light-blocking part and the inner wall of the first through hole.

[0010] Optionally, the housing includes a first half-housing and a second half-housing, and the dividing line between the second light-blocking part and the guide part along a preset direction is flush with the mating surface of the first half-housing and the second half-housing.

[0011] Optionally, it also includes a reset member disposed within the housing, the reset member abutting against the locking member, the reset member being used to drive the locking member to reset when the press is released.

[0012] Optionally, a bracket is provided inside the housing, and the bracket and the inner wall of the housing enclose a space for accommodating the battery cell. One side of the reset member abuts against the locking member, and the other side abuts against the bracket.

[0013] Optionally, the button includes: a pressing part and a mating part disposed on the side of the pressing part, the side of the mating part mating with the inner wall of the first through hole, and the dimension of the mating part in a preset direction is larger than the dimension of the pressing part in the preset direction.

[0014] Optionally, the side wall of the button and / or the inner wall of the first through hole are provided with a first rib, the first rib extending in a preset direction, the first rib being used to limit the button and provide resistance to the movement of the button.

[0015] Optionally, the side wall of the locking part and / or the inner wall of the second through hole are provided with a second rib. The second rib extends in a preset direction and is used to limit the locking part and provide a resisting force for the movement of the locking part.

[0016] The beneficial effects of this application include:

[0017] This application provides a detachable battery pack, including: a housing, battery cells disposed within the housing, and a locking member and a power display assembly disposed on the housing; the locking member includes: a button, a connecting part, and a locking part, the connecting part being connected to the button and the locking part respectively, the housing having a first through hole and a second through hole, the button moving in a preset direction within the first through hole, and the locking part moving in a preset direction within the second through hole; the power display assembly includes: at least two power indicator lights electrically connected to the battery cells, a light-blocking plate being disposed between two adjacent power indicator lights, the light-blocking plate extending into the first through hole, a guide channel forming between the side wall of the light-blocking plate and the inner wall of the first through hole, a portion of the button being movably disposed within the guide channel, the guide channel being used to guide the button to move in the preset direction. This battery pack utilizes the cooperation between the light-blocking plate inside the housing and the inner wall of the first through hole on the housing to limit the locking member, thereby improving the stability of the locking member's movement and thus enhancing the reliability of locking and unlocking operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the battery pack structure provided in an embodiment of this application;

[0020] Figure 2 One of the cross-sectional views of the battery pack provided in the embodiments of this application;

[0021] Figure 3 A second cross-sectional view of the battery pack provided in an embodiment of this application;

[0022] Figure 4 This is a partial structural diagram of the battery pack provided in an embodiment of this application;

[0023] Figure 5 for Figure 2 A magnified view of a portion of point A in the middle. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Please refer to Figure 1 and Figure 2 This application provides a detachable battery pack 10, which can be detachably connected to a power tool and supply power to the power tool when connected. The power tool can be an electric drill, electric screwdriver, electric hammer, etc.

[0030] Specifically, the detachable battery pack 10 includes: a housing 11, battery cells 12 disposed within the housing 11, and a locking member 13 and a power display component disposed on the housing 11. The battery cells 12 supply power to the power tool. The locking member 13, when protruding from the housing 11, can be inserted into the power tool to connect the battery pack 10 to the power tool; when retracted from the housing 11, it can be detached from the power tool. The power display component displays the remaining power of the battery cells 12. The locking member 13 includes: a button 131, a connecting portion 132, and a locking portion 133. The button 131 is pressed by the user, the locking portion 133 is engaged with the power tool, and the connecting portion 132 is connected to both the button 131 and the locking portion 133, thereby enabling the button 131 and the locking portion 133 to work together.

[0031] To achieve automatic reset of the locking element 13, the battery pack 10 also includes a reset element 18 disposed within the housing 11, which abuts against the locking element 13. When the user presses down the button 131, the reset element 18 deforms to store energy; after the user releases the button 131, the reset element 18 returns to its original state and releases energy, driving the locking element 13 to automatically reset.

[0032] The battery pack 10 may also include a bracket 19 disposed within the housing 11. The bracket 19 and the inner wall of the housing 11 enclose a space for accommodating the battery cell 12. The bracket 19 can protect the battery cell 12, and its outer surface can also serve as a mounting plane for mounting other parts within the housing 11. The reset member 18 can be configured to abut against the locking member 13 on one side and against the bracket 19 on the other side. The bracket 19 is used effectively, demonstrating a reasonable design.

[0033] The housing 11 has a first through hole 111 and a second through hole 112. The first through hole 111 is used to accommodate the button 131, and the second through hole 112 is used to accommodate the locking part 133. The connecting part 132 is completely located inside the housing 11. The button 131 can move in a preset direction Z within the first through hole 111, and the locking part 133 can move in the preset direction Z within the second through hole 112. Preferably, the preset direction Z is a straight line, in which case the button 131 and the locking part 133 move in the same direction. When driving the locking part 133, the user presses the button 131 preferably in the preset direction Z to ensure that the locking part 13 can slide smoothly relative to the housing 11. The preset direction Z can also be clockwise or counterclockwise. In this case, if the button 131 moves in the counterclockwise direction, the locking part 133 moves in the clockwise direction.

[0034] Please refer to the reference. Figure 3 and Figure 4A first rib 151 may be provided on the side wall of button 131 and / or the inner wall of the first through hole 111. The first rib 151 extends along a preset direction Z. The first rib 151 is used to limit the button 131 and provide a certain resistance force for the movement of button 131, providing tactile feedback to the user and making the user feel better when pressing button 131. Similarly, a second rib 152 may be provided on the side wall of locking part 133 and / or the inner wall of second through hole 112. The second rib 152 extends along a preset direction Z. The second rib 152 is used to limit the locking part 133 and provide a certain resistance force for the movement of locking part 133. The resistance force is transmitted to button 131, which can also provide tactile feedback to the user and make the user feel better when pressing button 131.

[0035] In this preferred embodiment, the button 131 includes a pressing portion 1311 and a mating portion 1312 disposed on the side of the pressing portion 1311. The side of the mating portion 1312 mates with the inner wall of the first through hole 111. The dimension H1 of the mating portion in a preset direction is larger than the dimension H2 of the pressing portion in the preset direction. This arrangement can increase the mating area between the button 131 and the first through hole 111, thereby improving the guiding effect; it can also reduce the weight of the button 131.

[0036] Preferably, the first rib 151 is disposed on the outer wall of the mating part 1312 facing the first through hole 111. The extension length of the first rib 151 can be selected as needed (for example, different materials have different friction and the extension length needs to be different), and can be short or long, which can better improve the user's feel when pressing the button 131.

[0037] Please refer to Figure 1 , Figure 2 and Figure 5 The power display component includes at least two power indicator lights 141 electrically connected to the battery cell 12. The number of lit power indicator lights 141 indicates the remaining power of the battery pack 10 to the user. For example, if there are four power indicator lights 141, when all four power indicator lights 141 are lit, it indicates that the remaining power of the battery pack 10 is approximately 100%. When only two of the four power indicator lights 141 are lit, the remaining power of the battery pack 10 is approximately 50%.

[0038] In this embodiment, the power indicator lamp 141 is directly mounted on the power indicator circuit board. After the power indicator circuit board is installed, the position of the power indicator lamp 141 can be fixed, making installation very convenient. The power indicator circuit board is housed within the housing 11, and the power indicator lamp 141 is spaced apart from the inner wall of the housing 11. When at least two power indicator lamps are lit, their light within the housing 11 will blend together.

[0039] To prevent interference between adjacent power indicator lights 141, which could affect the user's judgment of remaining power from outside the housing 11, a light shield 16 is provided between adjacent power indicator lights 141 to isolate their light. The light shield 16 extends into the first through hole 111 in the direction of the button 131. A guide channel 17 is formed between the side wall of the light shield 16 and the inner wall of the first through hole 111 to guide the button 131 to move in a preset direction Z. A portion of the button 131 is movably disposed within the guide channel 17. By utilizing the cooperation between the light shield 16 inside the housing 11 and the inner wall of the first through hole 111 on the housing 11, the locking member 13 is limited, which improves the stability of the movement of the locking member 13 and thus enhances the reliability of locking and unlocking operations.

[0040] To facilitate the movement of button 131 in and out of guide channel 17, optionally, the side wall of light shield 16 facing button 131 is divided into a first region 16a and a second region 16b connected to the first region 16a. The first region 16a is parallel to a preset direction Z to guide the movement of button 131; the second region 16b is set at an angle to the preset direction Z to increase the entrance of guide channel 17.

[0041] It can be understood that the entrance of the guide channel 17 refers to the opening on the guide channel 17 for the button 131 to enter and exit.

[0042] As mentioned above, the sidewall of button 131 mates with the inner wall of the first through hole 111, and the movement of button 131 is guided by the first through hole 111; the sidewall of locking part 133 mates with the inner wall of the second through hole 112, and the movement of locking part 133 is guided by the second through hole 112. In addition, the guide channel 17 guides button 131. Thus, the housing 11 has three guiding structures (first through hole 111, second through hole 112, and guide channel 17) to guide the movement of locking member 13, thereby making the movement of locking member 13 more stable and the locking and unlocking operations more reliable.

[0043] In the locking member 13, the button 131 is the active member relative to the locking part 133. In this application, two guide mechanisms guide the button 131 of the locking member 13, which can make the movement of the button 131 more stable, thereby making the movement of the entire locking member 13 more stable and the locking and unlocking operations more reliable.

[0044] The power indicator 141 is typically located inside the housing 11. To allow the user to observe the on / off state of the power indicator 141, the power display assembly may further include a power display window 142 disposed on the housing 11. The power display window 142 may be integrally formed onto the housing 11 or may be a separate component embedded in the housing 11. A light shield 16 abuts against the power display window 142 to divide the power display window 142 into at least two windows 143. The number of windows 143 is equal to the number of power indicator lights 141, and the positions of the windows 143 and power indicator lights 141 correspond one-to-one. The user can observe the on / off state of the corresponding power indicator light 141 through the window 143. The light shield 16 abutting against the power display window 142 ensures that the light from two adjacent power indicator lights 141 is always isolated during propagation.

[0045] As mentioned above, the light-blocking plate 16 serves both to block light and to guide the light. To prevent the button 131 from interfering with the power indicator light 141 during movement, the two corresponding areas of the light-blocking plate 16 can be divided into sections, with stepped surfaces provided at the division points. That is, the light-blocking plate 16 includes: a light-blocking part and a guiding part 161 connected to each other. The light-blocking part is located between two adjacent power indicator lights 141 and abuts against the power indicator window 142 to achieve the light-blocking function of the light-blocking plate 16; the guiding part 161 is opposite to the inner wall of the first through hole 111 to achieve the guiding function of the light-blocking plate 16.

[0046] Furthermore, the light-blocking portion includes a first light-blocking portion 162 and a second light-blocking portion 163 connected to each other. The first light-blocking portion 162 is located inside the power display window 142, used to divide the power display window 142 into a window 143. The second light-blocking portion 163 is located inside the housing 11, abutting against the inner side of the power display window 142, used to separate two adjacent power display lamps 141. In this embodiment, the power display window 142 is integrally formed in the housing 11, or in other words, the through hole penetrating the housing 11 constitutes the power display window 142. The first light-blocking portion 162 is located within the area of ​​the power display window 142 and abuts against the circumferential inner wall of the power display window 142. The second light-blocking portion 163 abuts against the inner side of the power display window 142 that is flush with the inner wall of the housing 11.

[0047] The vertical distance D1 between the side wall of the guide portion 161 and the inner wall of the first through hole 111 is greater than the vertical distance D2 between the side wall of the second light-blocking portion 163 and the inner wall of the first through hole 111. Therefore, a stepped surface is formed at the partition between the second light-blocking portion 163 and the guide portion 161 (hereinafter, the dividing line 164). By setting a larger vertical distance D1 between the side wall of the guide portion and the inner wall of the first through hole, a wider guide channel 17 can be formed for the movement of the button 131. By setting a smaller vertical distance D2 between the side wall of the second light-blocking portion and the inner wall of the first through hole, the portion of the second light-blocking portion 163 that is wider than the guide portion 161 can limit the travel of the button 131, preventing excessive pressing by the user.

[0048] As mentioned above, the light-blocking plate 16 includes an interconnected light-blocking portion and a guide portion 161. The light-blocking portion includes an interconnected first light-blocking portion 162 and a second light-blocking portion 163. It should be noted that this division is a functional partitioning of the light-blocking plate 16 and does not mean that each part needs to be separately installed. Preferably, in this embodiment, each part of the light-blocking plate 16 (guide portion 161, first light-blocking portion 162 and second light-blocking portion 163) is integrally formed, requiring no installation and resulting in a more compact structure.

[0049] Optionally, the housing 11 includes a first half-housing 11a and a second half-housing 11b. The dividing line 164 of the second light-blocking portion 163 and the guide portion 161 along the preset direction Z is flush with the mating surface 11c of the first half-housing 11a and the second half-housing 11b, so as to facilitate the assembly of the battery pack 10 and the movement of the locking member 13. It should be noted that "flush" includes completely flush and nearly flush. Nearly flush means that there is a certain distance between the two, but the distance is not large, for example, the distance is less than or equal to 3mm.

[0050] Please see Figure 1 and Figure 5 The second half-shell 11b has a step 11d on its mating surface 11c. The boundary line 164 between the second light-blocking part 163 and the guide part 161 along the preset direction Z is flush with the surface of the step 11d. At this time, the boundary line 164 between the second light-blocking part 163 and the guide part 161 along the preset direction Z is nearly flush with the mating surface 11c of the first half-shell 11a and the second half-shell 11b. This arrangement allows the step 11d to provide a limit for the mating of the first half-shell 11a and the second half-shell 11b, making installation more convenient. The fact that the boundary line 164 between the second light-blocking part 163 and the guide part 161 along the preset direction Z is flush with the surface of the step 11d allows for a wider plane to provide a lower limit for the button 131.

[0051] As mentioned above, all parts of the light-shielding plate 16 are integrally formed. Preferably, in this embodiment, the light-shielding plate 16 is integrally formed with the second half-shell 11b, eliminating the need for installation and resulting in a more compact structure. The power display window 142 is formed on the second half-shell 11b. The first light-shielding portion 162 and the second light-shielding portion 163 of the light-shielding plate 16 are formed on the second half-shell 11b and located within its spatial range. The guide portion 161 of the light-shielding plate 16 is formed on the second half-shell 11b but extends into the range of the first half-shell 11a. The guide portion 161 cooperates with the inner wall of the first half-shell 11a to form a guide channel 17. When installing the battery pack 10, the guide channel 17 is formed after the first half-shell 11a and the second half-shell 11b are aligned. The design is very reasonable and installation is very convenient.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. This application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A detachable battery pack, characterized by, include: A housing, a battery cell disposed within the housing, and a locking element and a power display assembly disposed on the housing; The locking component includes: a button, a connecting part, and a locking part. The connecting part is connected to the button and the locking part respectively. The housing is provided with a first through hole and a second through hole. The button moves in a preset direction within the first through hole, and the locking part moves in the preset direction within the second through hole. The power display component includes: at least two power indicator lights electrically connected to the battery cell, a light shield is provided between two adjacent power indicator lights, the light shield extends into the first through hole, a guide channel is formed between the side wall of the light shield and the inner wall of the first through hole, a portion of the button is movably disposed in the guide channel, and the guide channel is used to guide the button to move along the preset direction.

2. The detachable battery pack of claim 1, wherein, The light-blocking plate has a first region and a second region connected to the first region on its side wall facing the button. The first region is parallel to the preset direction, and the second region is set at an angle to the preset direction. The second region is used to increase the entrance of the guide channel.

3. The detachable battery pack of claim 1, wherein, The power display component further includes: a power display window, which is disposed on the housing, and a light shield abuts against the power display window to divide the power display window into at least two windows, the at least two windows corresponding one-to-one with the positions of at least two power display lamps.

4. The detachable battery pack of claim 3, wherein, The light-blocking plate includes a first light-blocking part, a second light-blocking part, and a guide part. The first light-blocking part and the guide part are respectively connected to the second light-blocking part. The first light-blocking part is located inside the power display window. The second light-blocking part is located between two adjacent power display lamps and abuts against the power display window. The guide part is opposite to the inner wall of the first through hole. The vertical distance between the side wall of the guide part and the inner wall of the first through hole is greater than the vertical distance between the side wall of the second light-blocking part and the inner wall of the first through hole.

5. The detachable battery pack of claim 4, wherein, The housing includes a first half-shell and a second half-shell, and the dividing line between the second light-blocking part and the guide part along the preset direction is flush with the mating surface of the first half-shell and the second half-shell.

6. The detachable battery pack of claim 1, wherein, It also includes a reset member disposed within the housing, the reset member abutting against the locking member, the reset member being used to drive the locking member to reset when the pressure is released.

7. The detachable battery pack of claim 6, wherein, The housing is provided with a bracket, which, together with the inner wall of the housing, forms a space for accommodating the battery cell. One side of the reset member abuts against the locking member, and the other side abuts against the bracket.

8. The detachable battery pack of claim 1, wherein, The button includes a pressing part and a mating part disposed on the side of the pressing part. The side of the mating part mates with the inner wall of the first through hole. The dimension of the mating part in the preset direction is larger than the dimension of the pressing part in the preset direction.

9. The detachable battery pack of claim 1, wherein, The side wall of the button and / or the inner wall of the first through hole are provided with a first rib, the first rib extending along the preset direction, the first rib being used to limit the button and provide resistance to the movement of the button.

10. The detachable battery pack of claim 1, wherein, The side wall of the locking part and / or the inner wall of the second through hole is provided with a second rib, the second rib extends along the preset direction, and the second rib is used for limiting the locking part and providing a resistance force for movement of the locking part.

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