Battery box with replaceable battery cell

Abstract

A battery box with a replaceable battery cell comprises a steel shell, an insulation cover and an integrated circuit board, the insulation cover is detachably installed on the steel shell, a cavity is defined by the insulation cover and the steel shell, the cavity is used for installing the battery cell, the integrated circuit board is installed on the insulation cover and located in the cavity, and the integrated circuit board is provided with a positive electrode conductive end and a negative electrode conductive end electrically connected with the steel shell. The integrated circuit board is provided with a connecting piece electrically connected with the positive electrode conductive end, the connecting piece is used for abutting against the positive electrode of the battery cell, the integrated circuit board is provided with a charging interface exposed out of the insulating cover, the insulating cover is provided with a cover cap, the cover cap is electrically connected with the positive electrode conductive end, and the steel shell is provided with at least one elastic clamping piece in the cavity. The elastic clamping piece is used for stabilizing the battery cell, an elastic piece is arranged on the inner bottom wall of the steel shell, and the elastic piece is used for abutting against the negative electrode of the battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box with replaceable battery cores. Background Art

[0002] At present, there are more and more rechargeable batteries with USB interfaces on the market, including batteries of various sizes, such as AAA batteries, AA batteries, C batteries, D batteries, etc.

[0003] Existing rechargeable batteries generally use lithium cells. Compared with traditional nickel-metal hydride or nickel-cadmium batteries, lithium cells have higher energy density, which means that rechargeable batteries can achieve the same capacity by using smaller cells than traditional batteries. Therefore, rechargeable batteries can achieve a larger capacity by using cells of the same volume as traditional batteries.

[0004] For rechargeable batteries of the same size, cells of different capacities can be used to meet different needs. Currently, for such rechargeable batteries, many manufacturers need to produce a variety of shells for fixing different cells according to the specifications of the cells, and cannot use the same shell to accommodate different cells, which increases production costs and reduces production efficiency. Utility Model Content

[0005] The utility model aims to provide a battery box with replaceable battery cells, so as to solve the problem that the shell of the same rechargeable battery cannot accommodate battery cells of different specifications.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery box with replaceable battery cells comprises a steel shell, an insulating cover and an integrated circuit board. The insulating cover is detachably mounted on the steel shell. The insulating cover and the steel shell form a cavity for mounting the battery cell. The integrated circuit board is mounted on the insulating cover and is located in the cavity. The integrated circuit board has a positive conductive end and a negative conductive end electrically connected to the steel shell. A connector electrically connected to the positive conductive end is provided on the integrated circuit board. The connector is used to abut against the positive electrode of the battery cell. The integrated circuit board has a charging interface exposed from the insulating cover. A cap is mounted on the insulating cover. The cap is electrically connected to the positive conductive end. The steel shell is provided with at least one elastic clamp in the cavity. The elastic clamp is used to stabilize the battery cell. An elastic member is provided on the inner bottom wall of the steel shell. The elastic member is used to abut against the negative electrode of the battery cell.

[0008] Furthermore, the elastic clamp includes a fixing ring and a clamping sheet, the clamping sheet is arranged on the inner circumference of the fixing ring and extends radially inwardly along the fixing ring, the outer circumference of the fixing ring is arranged on the inner side wall of the steel shell, and the clamping sheet is used to abut the side wall of the battery cell.

[0009] Furthermore, the elastic clamping member includes a fixing sleeve, a reset spring and a clamping block. The outer circumference of the fixing sleeve is arranged on the inner side wall of the steel shell. The inner circumference of the fixing sleeve is radially provided with a movable hole. The reset spring is arranged in the movable hole. The clamping block is movably arranged in the movable hole. The two ends of the reset spring respectively abut the fixing sleeve and the clamping block. The clamping block can be displaced along the extension direction of the movable hole under the elastic force of the reset spring. The clamping block is used to abut the side wall of the battery cell.

[0010] Furthermore, the clamping block has an abutting inclined surface, and the abutting inclined surface is used to abut against the battery core.

[0011] Furthermore, a buckle portion is provided on the insulating cover extending along the side wall toward the steel shell, and a clamping portion cooperating with the buckle portion is convexly provided on the inner side wall of the steel shell, and the buckle portion has an opening, and the opening is used to detach the clamping portion from the buckle portion.

[0012] Furthermore, the insulating cover is provided with a positioning column extending toward the steel shell, the positioning column is used to position the integrated circuit board, and the integrated circuit board is provided with a positioning hole matched with the positioning column.

[0013] Furthermore, the inner side wall of the insulating cover is provided with a clamping portion, and the clamping portion is used to install the integrated circuit board on the insulating cover.

[0014] Furthermore, the cap has a protruding portion and a plug pin connected to the protruding portion, the protruding portion protrudes out of the upper surface of the insulating cover, and the plug pin passes through the insulating cover and is electrically connected to the positive conductive end of the integrated circuit board.

[0015] Furthermore, a pin sleeve is provided corresponding to the plug pin of the integrated circuit board, the pin sleeve is electrically connected to the positive conductive end, and the plug pin is inserted into the pin sleeve.

[0016] Furthermore, the cap also has a clamping portion connected to the protruding portion, the clamping portion is arranged opposite to the plug pin, and the clamping portion passes through the insulating cover and abuts against the lower surface of the insulating cover.

[0017] The utility model has the beneficial effects of a battery box with replaceable cells: the insulating cover can be removed from the steel shell by the cooperation between the insulating cover and the steel shell, so as to realize the function of replacing the cells; the battery box with replaceable cells can be installed with cells of different specifications by the cooperation between the elastic clamp and the elastic member; the battery box with replaceable cells supports the function of charging the cells by setting a charging interface on the integrated circuit board. The battery box with replaceable cells is not only simple in structure, reduces the difficulty of battery assembly, and improves production efficiency, but also is suitable for cells of different specifications, thus reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a battery box with replaceable battery cells according to Example 1 of the present utility model.

[0019] Figure 2 for Figure 1 A three-dimensional exploded view of a battery box with replaceable batteries is shown.

[0020] Figure 3 for Figure 2 A three-dimensional view of the elastic clamp shown.

[0021] Figure 4 for Figure 2 A perspective view of the integrated circuit board shown.

[0022] Figure 5 for Figure 2 A perspective view of the cap is shown.

[0023] Figure 6 for Figure 2 A perspective view of the insulating cover is shown.

[0024] Figure 7 for Figure 2 A perspective view of the steel shell is shown.

[0025] Figure 8 for Figure 1 A cross-sectional view of a battery box with replaceable cells is shown.

[0026] Fig. 9 for Figure 8 Enlarged cross-sectional view at point A in the middle.

[0027] Fig.10 for Figure 8 Enlarged cross-sectional view at point B.

[0028] Fig.11 for Figure 8 A cross-sectional view of a battery box with replaceable cells is shown with the cells installed.

[0029] Fig.12 This is a cross-sectional view of a battery box with replaceable battery cells according to embodiment 2 of the present invention.

[0030] Fig.13 for Fig.12 Enlarged cross-sectional view at point C in the middle.

[0031] Fig.14 for Fig.12 A cross-sectional view of a battery box with replaceable cells is shown with the cells installed. DETAILED DESCRIPTION

[0032] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc. in the specification and claims of the utility model indicate directions or position relationships based on the directions or position relationships shown in the drawings, and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore cannot be understood as limitations on the present application.

[0034] Embodiment 1:

[0035] See also Figure 1 , Figure 2 , Figure 8 and Fig. 9 A battery box with replaceable battery cells includes a steel shell 60, an insulating cover 20, and an integrated circuit board 30. The insulating cover 20 is detachably mounted on the steel shell 60. The insulating cover 20 and the steel shell 60 form a cavity 100. The cavity 100 is used to install the battery cell 200. The integrated circuit board 30 is mounted on the insulating cover 20 and is located in the cavity 100.

[0036] The integrated circuit board 30 has a positive conductive end and a negative conductive end electrically connected to the steel shell 60. The integrated circuit board 30 is provided with a connector 31 electrically connected to the positive conductive end, and the connector 31 is used to abut against the positive electrode of the battery cell 200. The integrated circuit board 30 has a charging interface 32 exposed from the insulating cover 20.

[0037] A cap 10 is mounted on the insulating cover 20 , and the cap 10 is electrically connected to the positive conductive end.

[0038] The steel shell 60 is provided with at least one elastic clamping member 40 in the cavity 100 , and the elastic clamping member 40 is used to stabilize the battery cell 200 ; an elastic member 50 is provided on the inner bottom wall of the steel shell 60 , and the elastic member 50 is used to abut against the negative electrode of the battery cell 200 .

[0039] As described above, the battery box with replaceable cells proposed by the utility model can be removed from the steel shell 60 through the cooperation between the insulating cover 20 and the steel shell 60, so as to realize the function of replacing the cell 200; through the cooperation between the elastic clamp 40 and the elastic member 50, the battery box with replaceable cells can be installed with cells 200 of different specifications; and by setting the charging interface 32 on the integrated circuit board 30, the battery box with replaceable cells can support the charging of the cell 200. The battery box with replaceable cells is not only simple in structure, reduces the difficulty of battery assembly, and improves production efficiency, but also is suitable for cells 200 of different specifications, reducing production costs.

[0040] See also Figure 6-Figure 8The insulating cover 20 is provided with a buckle portion 21 extending along the side wall toward the steel shell 60, and the inner side wall of the steel shell 60 is provided with a clamping portion 61 that cooperates with the buckle portion 21. The buckle portion 21 has an opening 211, and the opening 211 is used to detach the clamping portion 61 from the buckle portion 21.

[0041] Furthermore, the clamping portion 61 has a clamping slope 611 that is inclined downward. When the insulation cover 20 needs to be installed on the steel shell 60, the buckling portion 21 of the insulation cover 20 is pressed against the clamping slope 611 and moved downward until the buckling portion 21 is buckled with the clamping portion 61, and the installation is completed; the clamping slope 611 makes the installation of the insulation cover 20 more convenient.

[0042] When the insulating cover 20 needs to be removed, the buckling portion 21 of the insulating cover 20 is buckled to the clamping portion 61 of the steel shell 60. The insulating cover 20 only needs to be rotated to disengage the buckling portion 21 from the clamping portion 61 along the opening 211 to complete the removal.

[0043] See also Figure 8 and Fig.11 , the elastic member 50 is welded to the inner bottom wall of the steel shell 60 and is electrically connected to the steel shell 60. When the battery box with replaceable battery cells is installed with the battery cell 200, the negative electrode of the battery cell 200 is electrically connected to the steel shell 60 through the elastic member 50. The elastic member 50 can be a spring, a spring, etc. In this embodiment, the elastic member 50 is a conical spring, and the end of the elastic member 50 with a larger diameter abuts against the inner bottom wall of the steel shell 60, and the end of the elastic member 50 with a smaller diameter is used to abut against the negative electrode of the battery cell 200; the use of a conical spring for the elastic member 50 can make the support of the battery cell 200 by the elastic member 50 more stable.

[0044] See also Figure 3 , Figure 8 , Fig.10 and Fig.11 In this embodiment, the elastic clamping member 40 includes a fixing ring 41 and a clamping sheet 42 .

[0045] The clamping piece 42 is disposed on the inner circumference of the fixing ring 41 and extends radially inwardly of the fixing ring 41 . The outer circumference of the fixing ring 41 is disposed on the inner side wall of the steel shell 60 . The clamping piece 42 is used to abut against the side wall of the battery cell 200 .

[0046] The clamping sheet 42 can be made of materials such as silicone, rubber, TPU, etc., which are not limited here. Such materials have good elasticity and flexibility, so that the clamping sheet 42 can stabilize the battery cells 200 of different specifications without causing damage to the battery cells 200.

[0047] More specifically, the clamping piece 42 has a fixed end 421 and a movable portion 422 connected to the fixed end 421, and the connection between the clamping piece 42 and the fixing ring 41 is the fixed end 421. When the battery box with replaceable battery cells is installed with the battery cell 200, the upper end surface 4221 of the movable portion 422 abuts against the side wall of the battery cell 200 to achieve the purpose of clamping the battery cell 200.

[0048] See also Figure 4 , Figure 8 and Fig. 9 The insulating cover 20 is provided with a positioning post 22 extending toward the steel shell 60. The positioning post 22 is used to position the integrated circuit board 30. The integrated circuit board 30 is provided with a positioning hole 36 that matches the positioning post 22. The positioning post 22 matches the positioning hole 36 to position the integrated circuit board 30 on the insulating cover 20.

[0049] The inner side wall of the insulating cover 20 is provided with a clamping portion 23, and the clamping portion 23 is used to mount the integrated circuit board 30 on the insulating cover 20. The clamping portion 23 prevents the integrated circuit board 30 from falling off from the insulating cover 20.

[0050] See also Figure 5 , Figure 6 and Fig. 9 The cap 10 has a protruding portion 11 and a plug 12 connected to the protruding portion 11, the protruding portion 11 protrudes out of the upper surface of the insulating cover 20, and the insulating cover 20 is provided with a supporting portion 24 corresponding to the protruding portion 11, and the supporting portion 24 is used to support the cap 10. The plug 12 passes through the insulating cover 20 and is electrically connected to the positive conductive end of the integrated circuit board 30.

[0051] More specifically, the integrated circuit board 30 is provided with a needle sleeve 33 corresponding to the pin 12, the needle sleeve 33 is electrically connected to the positive conductive end, the pin 12 is inserted into the needle sleeve 33, and through the cooperation between the pin 12 and the needle sleeve 33, the cap 10 is electrically connected to the positive conductive end of the integrated circuit board 30.

[0052] The cap 10 also has a holding portion 13 connected to the protruding portion 11, and the holding portion 13 is arranged opposite to the pin 12. The holding portion 13 passes through the insulating cover 20 and abuts against the lower surface of the insulating cover 20 to prevent the cap 10 from being separated from the insulating cover 20.

[0053] See also Fig. 9The connector 31 is fixed on the lower surface of the integrated circuit board 30 , and the connector 31 is electrically connected to the positive conductive end of the integrated circuit board 30 , thereby realizing electrical connection between the connector 31 and the cap 10 .

[0054] The connecting member 31 may be a conductive sheet, a spring, a spring, etc. In the present embodiment, the connecting member 31 is a spring. The connecting member 31 using a spring can make the connection between the connecting sheet and the positive electrode of the battery cell 200 more stable.

[0055] See also Figure 6 and Fig. 9 , the charging interface 32 can be a Micro USB interface or a Type-C interface. Considering that the Type-C interface is more common at present, in this embodiment, the charging interface 32 adopts the Type-C interface. More specifically, the insulating cover 20 is provided with an avoidance hole 25 corresponding to the charging interface 32, and the charging interface 32 is exposed to the insulating cover 20 through the avoidance hole 25 to facilitate charging.

[0056] See also Figure 4 The integrated circuit board 30 is also provided with an indicator light 34 and a negative electrode connecting piece 35. The indicator light 34 lights up in different ways to indicate the state of the battery box with replaceable cells when the cells 200 are installed and charged or discharged. The negative electrode connecting piece 35 is electrically connected to the negative conductive end of the integrated circuit board 30. The negative electrode connecting piece 35 has a certain elasticity. When the insulating cover 20 is installed on the steel shell 60, the negative electrode connecting piece 35 always abuts against the inner wall of the steel shell 60 to achieve electrical connection between the negative electrode connecting piece 35 and the steel shell 60.

[0057] When the battery box of the replaceable battery cell is installed with the battery cell 200, the positive electrode of the battery cell 200, the connecting member 31, the positive conductive end, and the cap 10 are electrically connected, and the negative electrode of the battery cell 200, the elastic member 50, the steel shell 60, the negative connecting piece 35, and the negative conductive end are electrically connected.

[0058] In addition, the cap 10 and the steel shell 60 are respectively nickel-plated, and nickel plating can improve the corrosion resistance and wear resistance of the cap 10 and the steel shell 60, thereby effectively extending the service life of the battery box of the replaceable battery cell.

[0059] Embodiment 2:

[0060] A battery box with replaceable battery cells, whose structure is similar to that of the battery box with replaceable battery cells in Embodiment 1, except that:

[0061] See also Figure 12-14The elastic clamping member 40 includes a fixing sleeve 43 , a return spring 44 and a clamping block 45 .

[0062] The outer circumference of the fixing sleeve 43 is arranged on the inner side wall of the steel shell 60 , and the inner circumference of the fixing sleeve 43 is radially provided with a movable hole 431 . The reset spring 44 is arranged in the movable hole 431 , and the clamping block 45 is movably arranged in the movable hole 431 .

[0063] The two ends of the return spring 44 respectively abut against the fixing sleeve 43 and the clamping block 45 . The clamping block 45 can be displaced along the extension direction of the movable hole 431 under the elastic force of the return spring 44 . The clamping block 45 is used to abut against the side wall of the battery cell 200 .

[0064] The clamping block 45 has a contact inclined surface 451 , and the contact inclined surface 451 is used to contact the battery cell 200 .

[0065] When the battery box with replaceable battery cells is used to install the battery cell 200, the battery cell 200 is placed in the steel shell 60, and the bottom of the battery cell 200 abuts against the abutting slope 451. The battery cell 200 pushes the clamping block 45 through the abutting slope 451 to squeeze the return spring 44, so that the clamping block 45 moves toward the movable hole 431. The battery cell 200 can be smoothly placed in the steel shell 60 and the bottom of the battery cell 200 abuts against the elastic member 50. At this time, the clamping block 45 abuts against the side wall of the battery cell 200 under the elastic force of the return spring 44, thereby stabilizing the battery cell 200.

[0066] Through the cooperation between the return spring 44 and the clamping block 45 , the elastic clamping member 40 can stabilize the battery cells 200 of different specifications.

[0067] The utility model has the beneficial effects of a battery box with replaceable battery cells: not only is the structure simple, the difficulty of assembling the battery is reduced, the production efficiency is improved, but also it is suitable for battery cells of different specifications, thus reducing the production cost.

[0068] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A battery box with replaceable battery cells, characterized in that: It includes a steel shell, an insulating cover, and an integrated circuit board. The insulating cover is detachably mounted on the steel shell. The insulating cover and the steel shell form a cavity, and the cavity is used to install a battery cell. The integrated circuit board is mounted on the insulating cover and is located in the cavity. The integrated circuit board has a positive conductive end and a negative conductive end electrically connected to the steel shell. A connector electrically connected to the positive conductive end is provided on the integrated circuit board, and the connector is used to abut against the positive electrode of the battery cell. The integrated circuit board has a charging interface exposed from the insulating cover. A cap is installed on the insulating cover, and the cap is electrically connected to the positive conductive end. The steel shell is provided with at least one elastic clamp in the cavity, and the elastic clamp is used to stabilize the battery cell. An elastic member is provided on the inner bottom wall of the steel shell, and the elastic member is used to abut against the negative electrode of the battery cell.

2. The battery box with replaceable battery cells as claimed in claim 1, characterized in that: The elastic clamping member includes a fixing ring and a clamping sheet, wherein the clamping sheet is arranged on the inner circumference of the fixing ring and extends radially inwardly along the fixing ring, the outer circumference of the fixing ring is arranged on the inner side wall of the steel shell, and the clamping sheet is used to abut against the side wall of the battery cell.

3. The battery box with replaceable battery cells as claimed in claim 1, characterized in that: The elastic clamping member includes a fixing sleeve, a reset spring and a clamping block. The outer circumference of the fixing sleeve is arranged on the inner side wall of the steel shell. The inner circumference of the fixing sleeve is radially provided with a movable hole. The reset spring is arranged in the movable hole. The clamping block is movably arranged in the movable hole. The two ends of the reset spring respectively abut the fixing sleeve and the clamping block. The clamping block can be displaced along the extension direction of the movable hole under the elastic force of the reset spring. The clamping block is used to abut the side wall of the battery cell.

4. The battery box with replaceable battery cells as claimed in claim 3, characterized in that: The clamping block has a contact slope, and the contact slope is used for contacting the battery core.

5. The battery box with replaceable battery cells as claimed in claim 1, characterized in that: The insulating cover is provided with a buckle portion extending along the side wall toward the steel shell, and the inner side wall of the steel shell is provided with a clamping portion cooperating with the buckle portion. The buckle portion has an opening, and the opening is used to detach the clamping portion from the buckle portion.

6. The battery box with replaceable battery cells as claimed in claim 1, characterized in that: The insulating cover is provided with a positioning column extending toward the steel shell, the positioning column is used to position the integrated circuit board, and the integrated circuit board is provided with a positioning hole matched with the positioning column.

7. The battery box with replaceable battery cells as claimed in claim 1, characterized in that: The inner side wall of the insulation cover is provided with a clamping portion, and the clamping portion is used to mount the integrated circuit board on the insulation cover.

8. The battery box with replaceable battery cells as claimed in claim 1, characterized in that: The cap has a protruding portion and a plug pin connected to the protruding portion, the protruding portion protrudes out of the upper surface of the insulating cover, and the plug pin passes through the insulating cover and is electrically connected to the positive conductive end of the integrated circuit board.

9. The battery box with replaceable cells as claimed in claim 8, characterized in that: The integrated circuit board is provided with a needle sleeve corresponding to the plug pin, the needle sleeve is electrically connected to the positive conductive end, and the plug pin is inserted into the needle sleeve.

10. The battery box with replaceable battery cells as claimed in claim 8, characterized in that: The cap also has a clamping portion connected to the protruding portion, the clamping portion is arranged opposite to the plug pin, and the clamping portion passes through the insulating cover and abuts against the lower surface of the insulating cover.

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