Battery pack kit

Abstract

The utility model relates to the field of lithium ion battery discloses a battery pack kit, including battery pack, plurality of battery monomer series connection or parallel connection or series connection and parallel connection combination constitutes, and the end where the electrode is at is top end, and the top end electric connection has with the electrode electric connection of battery pack's discharge wire, and each charging voltage sampling line is electrically connected with each battery monomer respectively, protective sleeve, soft, can elastic deformation, the battery pack is covered in the protective sleeve, and the top end of the flexible elastic protective sleeve is equipped with first opening for the discharge wire, charging voltage sampling line stretches out.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more particularly to a battery pack kit. Background Technology

[0002] With the increasing application of batteries, especially lithium-ion batteries, more and more devices are using lithium-ion batteries.

[0003] During the research process of this utility model, the inventors discovered that current lithium-ion battery packs are at risk of being dropped or bumped during use, and the surface of the battery cells is very easy to be scratched, which can lead to short circuits, fires, and explosions, posing a threat to product safety. Summary of the Invention

[0004] One of the objectives of this utility model embodiment is to provide a battery pack kit that can effectively improve the product's protection and safety performance.

[0005] This utility model provides a battery pack kit, comprising:

[0006] A battery pack is composed of a plurality of individual battery cells connected in series, parallel, or a combination of both. The end containing the electrodes is designated as the top. At the top, there are discharge lines electrically connected to the electrodes of the battery pack, and charging voltage sampling lines electrically connected to each individual battery cell.

[0007] The protective sleeve is soft and elastically deformable. The battery pack is housed inside the protective sleeve. The top of the flexible and elastic protective sleeve has a first opening for the discharge line and the charging voltage sampling line to extend out.

[0008] Optionally, the first opening of the protective sleeve is narrower than the cross-section of the top of the battery pack, and the outer corners of the top of the battery pack are all enclosed within the protective sleeve.

[0009] Optionally, a second opening symmetrical to the first opening is provided at the bottom of the protective sleeve, and the outer corners of the bottom end of the battery pack are all wrapped inside the protective sleeve.

[0010] Optionally, the protective sleeve covering the battery pack is in an elastically stretched state.

[0011] Optionally, in its natural state, the height of the inner cavity of the protective sleeve is equal to or less than the height of the battery pack.

[0012] Optionally, in its natural state, the cross-section of the inner cavity of the protective sleeve is equal to or smaller than the cross-section of the battery pack.

[0013] Optionally, the protective sleeve is provided with a plurality of protective ridges in the height direction, the thickness of which is greater than the side surface between each pair of protective ridges.

[0014] Optionally, the side surface between each pair of protective ridges is a mesh with a plurality of weight-reducing holes.

[0015] Optionally, the battery pack is a lithium-ion battery pack.

[0016] Optionally, the other end of each of the discharge lines is connected to a power connector.

[0017] Optionally, the other end of each of the charging voltage sampling lines is connected to a common terminal block.

[0018] As can be seen from the above, the battery pack kit of this embodiment includes a removable protective cover made of a soft, low-density, and lightweight material. The protective cover has elastic deformation properties and possesses certain tear resistance, puncture resistance, cushioning rebound, and stretching characteristics. Placing the protective cover around the battery pack improves its protective performance, preventing damage from collisions, drops, and impacts. When the battery pack needs maintenance or other applications, the protective cover can be easily removed, making it very convenient to use. Attached Figure Description

[0019] The accompanying drawings, which are provided to further illustrate the present invention and form part of this application, do not constitute an undue limitation of the present invention.

[0020] Figure 1 A schematic diagram of the assembly structure of the battery pack and protective sleeve provided for a specific embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the structure of the battery assembled inside the protective sleeve, provided for a specific embodiment of this utility model;

[0022] Figure 3 A cross-sectional view of the protective sleeve provided for a specific embodiment of this utility model.

[0023] 1: Battery pack;

[0024] 2: Discharge wire;

[0025] 3: Charging voltage sampling line;

[0026] 4: Protective sleeve; 41: First opening; 42: Second opening; 43: Protective ridge; 44: Weight reduction hole;

[0027] 7: Power connector;

[0028] 8: Wiring terminals. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0030] See Figures 1-3 As shown.

[0031] This embodiment provides a battery pack kit structure, which includes an independent battery pack 1 and a protective sleeve 4, wherein the battery pack 1 may be, but is not limited to, a lithium-ion battery pack 1.

[0032] The battery pack 1 is composed of at least two battery cells connected in series or in parallel or a combination of series and parallel. The tabs of the battery pack 1 as the electrodes of the battery pack are used to form specific series and parallel connection schemes between battery cells, which may be, but are not limited to, those in the prior art.

[0033] Each battery cell is arranged together, and each tab is located at one end of the battery pack 1. The end where the tab is located is called the top end, the end opposite the top end is called the bottom end, and the surfaces between the top end and the bottom end are called the side ends.

[0034] For ease of assembly, multiple battery cells can be bundled together, but is not limited to this method. A discharge line 2 and a charging voltage sampling line 3 are connected to the top of the battery pack 1. Each discharge line 2 is electrically connected to the overall positive "+" and negative "-" electrodes of the battery pack 1, outputting current. Each charging voltage sampling line 3 is electrically connected to the "+" and "-" electrodes of each battery cell in the battery pack 1, enabling voltage sampling and individual charging of each cell. For example, but not limited to, a balanced charging technique can be used, i.e., real-time sampling of the voltage of each battery cell, and balanced charging of each cell based on the sampled voltage, resulting in a balanced distribution of charge among the cells. Further balanced charging techniques can be found in existing technologies. The electrical connection methods can be, but are not limited to, existing technologies such as laser welding, soldering, and ultrasonic welding.

[0035] The packaging of the battery pack 1 in this embodiment can be a hard shell packaging or, but is not limited to, a soft plastic film packaging, etc., and is not limited here.

[0036] As an illustration of this embodiment, a power connector 7 is connected to the other end of each discharge line 2 to connect with another power connector 7 of an external electric device.

[0037] Similarly, a terminal 8 is connected at the other end of the charging voltage sampling line 3 as a balanced charging connector, which is connected to the charger.

[0038] The protective sleeve 4 is made of a soft, low-density, and lightweight material. It possesses elastic deformation properties and exhibits certain tear resistance, puncture resistance, cushioning, and stretching characteristics. For example, but not limited to, it can be made of foam, polyurethane foam, etc. When it is fitted over the battery pack 1, it can effectively protect the surface of the battery cells.

[0039] An opening (referred to as the first opening 41) is made at the top of the protective sleeve 4. During assembly, the battery pack 1 is inserted through the first opening 41, so that the battery pack 1 is fitted inside the protective sleeve 4. The discharge wire and charging voltage sampling wire of the battery pack 1 extend from the first opening 41 at the top of the protective sleeve 4 for external power connection. Under the outward support of the battery pack 1, the protective sleeve 4 is in a natural state or a slightly elastic stretched state, with a rebound force. The protective sleeve 4 tightly covers the outer periphery of the battery pack 1, making it difficult to loosen or shift.

[0040] As can be seen from the above, the battery pack kit of this embodiment includes a removable protective sleeve 4, which is made of a soft, low-density, and lightweight material. The protective sleeve 4 has elastic deformation characteristics and certain tear resistance, puncture resistance, cushioning rebound, and stretching properties. The protective sleeve, when placed around the battery pack 1, improves the protective performance of the battery pack 1, preventing damage from collisions, drops, and impacts. When the battery pack needs maintenance or other applications, the protective sleeve can be easily removed, making it very convenient to use.

[0041] As an illustration of this embodiment, the diameter of the first opening 41 of the protective sleeve 4 is narrower than the cross-sectional area of ​​the top of the battery pack 1, so that after the battery pack 1 is put into the protective sleeve 4, the material outside the first opening 41 elastically rebounds. The first opening 41 is located inside the top of the battery pack 1, and each outer corner of the top of the battery pack 1 is covered inside the protective sleeve 4. The protective sleeve 4 provides all-round protection for the battery pack 1.

[0042] As an illustration of this embodiment, an opening (referred to as the second opening 42) is also provided on the bottom surface of the protective sleeve 4. In its natural state, the diameter of the second opening 42 is smaller than the cross-section of the battery pack 1, and all the outer corners of the bottom end of the battery pack 1 are enclosed within the protective sleeve 4. The shape and diameter of the second opening 42 may be, but are not limited to, the same as the first opening 41. The upper and lower openings of the protective sleeve 4 are the same, allowing the user to conveniently insert the battery pack 1 through either of the two openings, thus facilitating user operation and improving work efficiency.

[0043] As an illustration of this embodiment, the inner cavity of the protective sleeve 4 can be the same as or slightly smaller than the shape of the battery pack 1.

[0044] For example, it can be set that, in its natural state, the height of the inner cavity of the protective sleeve 4 is less than the height of the battery pack 1, or, in its natural state, the cross-section of the inner cavity of the protective sleeve 4 is equal to or less than the cross-section of the battery pack 1. When the protective sleeve 4 is placed over the battery pack 1, the protective sleeve 4 is tightly attached to the battery pack 1 or is slightly stretched, tightly wrapping the battery pack 1.

[0045] The illustration in this embodiment uses the battery pack 1 and the protective sleeve 4 as a cuboid, but it is not limited to this in practice. For example, it can be a cylinder, but the principle is the same.

[0046] As an illustration of this embodiment, at least two protective ridges 43 are provided in the height direction of the protective sleeve 4. Each protective ridge 43 is at the same height as the protective sleeve 4, and the thickness of each protective ridge 43 is greater than the wall thickness of the side between the two protective ridges 43.

[0047] As shown in the figure, the protective sleeve is a cuboid with four protective edges 43 along its height, serving as the four corner edges of the cuboid. The bottom of each protective edge 43 is located on the bottom surface, and the top of each protective edge 43 is located on the top surface. The thickness of the four protective edges 43 is greater than the wall thickness of other parts of the protective sleeve 4. The thicker protective edges 43 design can comprehensively strengthen the areas around the battery pack 1, such as the corners, which are prone to damage, drops, and impacts, providing effective protection for the battery pack 1.

[0048] As an illustration of this embodiment, weight-reducing holes 44 penetrating through the inside and outside are provided on the side between each protective ridge 43 of each protective sleeve 4. These weight-reducing holes 44 are evenly or partially distributed on each side, making each side have a mesh structure. This is beneficial for further reducing the weight of the protective sleeve 4.

[0049] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.

Claims

1. A battery pack kit, characterized in that, include: A battery pack is composed of a plurality of individual battery cells connected in series, parallel, or a combination of both. The end containing the electrodes is designated as the top. At the top, there are discharge lines electrically connected to the electrodes of the battery pack, and charging voltage sampling lines electrically connected to each individual battery cell. The protective sleeve is soft and elastically deformable. The battery pack is housed inside the protective sleeve. The top of the flexible and elastic protective sleeve has a first opening for the discharge line and the charging voltage sampling line to extend out.

2. The battery pack kit according to claim 1, characterized in that, The first opening of the protective sleeve is narrower than the cross-section of the top of the battery pack, and the outer corners of the top of the battery pack are all enclosed within the protective sleeve.

3. The battery pack kit according to claim 2, characterized in that, The bottom of the protective sleeve is also provided with a second opening symmetrical to the first opening, and the outer corners of the bottom end of the battery pack are all wrapped inside the protective sleeve.

4. The battery pack kit according to claim 1, characterized in that, The protective sleeve covering the battery pack is in an elastically stretched state.

5. The battery pack kit according to claim 4, characterized in that, In its natural state, the height of the inner cavity of the protective sleeve is equal to or less than the height of the battery pack.

6. The battery pack kit according to claim 4, characterized in that, In its natural state, the cross-section of the inner cavity of the protective sleeve is equal to or smaller than the cross-section of the battery pack.

7. The battery pack kit according to claim 5, characterized in that, The protective sleeve has a plurality of protective ridges in the height direction, the thickness of which is greater than the side surface between each pair of protective ridges.

8. The battery pack kit according to claim 7, characterized in that, The side surface between each pair of protective ridges is a mesh with a plurality of weight-reducing holes.

9. The battery pack kit according to any one of claims 1 to 7, characterized in that, The other end of each of the discharge lines is connected to a power connector.

10. The battery pack kit according to any one of claims 1 to 7, characterized in that, The other end of each of the charging voltage sampling lines is connected to a common terminal block.

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