Battery pack and electric equipment

Abstract

The utility model relates to the field of lithium ion batteries, and discloses a battery pack and electric equipment. A shell of the battery pack comprises a lower shell and an upper shell which are oppositely buckled, shell openings of the upper shell and the lower shell are opposite, shell tops and shell bottoms are opposite, upper side walls and lower side walls are connected in a buckled mode through buckle parts, and an identification area is further arranged on the outer surface of the shell. The periphery of the identification area is provided with a positioning rib part protruding out of the outer surface and / or a positioning groove recessed into the outer surface, the outer surface of the identification area is covered with an identification layer, and the battery pack body is packaged in the shell. By applying the technical scheme, the assembly efficiency of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery pack especially relates to a battery pack and electric equipment. BACKGROUND

[0002] With the more and more widely used battery, especially the application of lithium ion battery, the equipment using lithium ion battery is also more and more, and the use environment is also more and more complex. The appearance and size space requirement of lithium ion battery pack in the process of use is more and more strict, and the assembly convenience and production efficiency requirement is improved. SUMMARY

[0003] One of the purposes of the utility model embodiment is to provide a battery pack and electric equipment, and the technical scheme is beneficial to improve the efficiency of battery assembly.

[0004] In the first aspect, the utility model provides a battery pack, which comprises,

[0005] The shell comprises a lower shell and an upper shell that are relatively buckled, the shell mouths of the upper shell and the lower shell are opposite, the shell top is opposite to the shell bottom, the upper side wall and the lower side wall are buckled and connected through the buckle part, the outer surface of the shell is also provided with an identification area, the outer periphery of the identification area is provided with a positioning rib part protruding from the outer surface and / or a positioning groove recessed in the outer surface, and the outer surface of the identification area is covered with an identification layer,

[0006] The battery pack body is packaged in the shell.

[0007] Optionally, the shell top or the shell bottom is also provided with an electrode socket for external plugging, an electrode insertion tube is arranged in the electrode socket, and each electrode insertion tube is electrically connected with the electrode of the battery pack body.

[0008] Optionally, the shell top or the shell bottom is also provided with a voltage sampling socket for external plugging, a voltage sampling insertion tube is arranged in the voltage sampling socket, and the voltage sampling insertion tube is electrically connected with the electrical node between the two single bodies in the battery pack body.

[0009] Optionally, a plurality of protective sleeves are fixed to the inner surfaces of the shell bottom and / or the shell top, and each electrode insertion tube and voltage sampling insertion tube is also tightly sleeved in each protective sleeve.

[0010] Optionally, each electrode insertion tube and / or voltage sampling insertion tube is a copper tube.

[0011] Optionally, one of the end surfaces of the upper side wall and the lower side wall is provided with a groove, and the other end surface is provided with a convex rib matched with the groove.

[0012] When the upper shell and the lower shell are buckled, the convex rib extends into the recess, and the end faces of the upper side wall and the lower side wall on the inner side and the outer side of the convex rib and the recess are attached.

[0013] Optionally, a plurality of through holes or recesses are arranged on one of the groove wall of the recess and the convex rib, and a protrusion is arranged on the other as a buckle part,

[0014] The upper side wall and the lower side wall are buckled and connected through the buckle part, specifically, the protrusions are respectively buckled and positioned in the through holes or recesses.

[0015] Optionally, two sticker pieces are further included, and are respectively attached to opposite sides of the shell,

[0016] The outer surfaces of the upper side wall and the lower side wall of the middle part of each sticker piece, the upper edge extending from the bottom edge of the upper side wall and being attached to the top surface of the shell top, and the lower edge extending from the bottom edge of the lower side wall and being attached to the bottom surface of the shell bottom.

[0017] Optionally, a silk screen layer is further arranged on the surface of the positioning rib part and / or the positioning recess.

[0018] In a second aspect, the utility model provides a kind of electric equipment, comprising:

[0019] Drive circuit, the power input end of the drive circuit is electrically connected with the electrode interface of any above-mentioned battery pack.

[0020] As can be seen from the above, in the embodiment, the battery cell box is used to assemble the battery cells in order, a plurality of battery cell boxes are connected by a support module, and the plurality of battery cells are connected in series and parallel by the pole lug slot and the busbar on the support module.The battery pack module has high assembly order, high consistency, and is convenient to assemble and disassemble, which is beneficial to improve work efficiency.

[0021] In addition, the first support buckle part and the second support buckle part are respectively arranged on the left and right opposite sides of the support module at the front end of each battery pack module, and the first support buckle part and the second support buckle part are opposite each other.The first support buckle part of the first battery pack module is buckled and matched with the second support buckle part of the second battery pack module adjacent to the first battery pack module, and the two battery pack modules are connected together to form a battery pack with large capacity.The connection of the electrodes between the battery pack modules can be realized by wires.

[0022] As can be seen from the above, the battery pack module of the embodiment has high assembly order, high consistency, and is convenient to assemble and disassemble, which is beneficial to improve work efficiency and save cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings described herein are intended to provide further understanding of the present application, form a part of the application, and do not constitute an improper limitation of the present application.

[0024] Figure 1 A decomposition structure schematic view of a battery pack provided by the present application;

[0025] Figure 2 , 3 A three-dimensional structure schematic view of an upper shell provided by the present application;

[0026] Figure 4 , 5 A three-dimensional structure schematic view of a lower shell provided by the present application;

[0027] Figure 6 An assembly structure schematic view of a battery pack body and a lower shell provided by the present application;

[0028] Figure 7 A three-dimensional structure schematic view of a battery pack body provided by the present application;

[0029] Figure 8 A three-dimensional structure schematic view of a battery pack body provided by the present application.

[0030] 1: single body; 11: electrode insertion tube; 12: voltage sampling insertion tube;

[0031] 21: lower shell; 22: upper shell; 23: electrode insertion port; 24: voltage sampling insertion port;

[0032] 25: concave table; 26: first protective sleeve; 27 second protective sleeve;

[0033] 3: positioning rib part; 4: label piece; 5: groove; 6: convex rib; 7: protrusion;

[0034] 8: through hole or recess. DETAILED DESCRIPTION

[0035] The present application will be described in detail below with reference to the drawings and specific embodiments, and the schematic embodiments and descriptions of the present application are used to explain the present application, but do not constitute a limitation of the present application.

[0036] Examples of embodiments of the present application are described in detail below, which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout.

[0037] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, but should not be construed as limiting the invention. In the description of the invention, it should be understood that terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the invention 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 limiting the invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] See Figures 1-8 Show.

[0041] This embodiment provides a battery pack, which mainly includes a housing and a battery pack body encapsulated within the housing.

[0042] The battery pack consists of multiple individual battery cells 1 (each cell 1 can be a single cell or a combination of multiple cells) connected in series, parallel, or a combination of both. The electrical connections between the individual battery cells 1 can be made via a circuit board or adapter plate, or via wires such as copper wires. The overall positive "+" and overall negative "-" terminals of the battery pack serve as the discharge output terminals, outputting current to the outside.

[0043] The housing in this embodiment includes a lower shell 21 and an upper shell 22 with their openings interlocking. The upper shell 22 includes a shell top and an upper sidewall surrounding the shell top, with the open shell opening opposite the shell top. The lower shell 21 includes a shell bottom and a lower sidewall surrounding the shell bottom, with the open shell opening opposite the shell bottom.

[0044] The shell opening of the upper shell 22 and the lower shell 21 are opposite, the shell top and the shell bottom are opposite, and the end faces of the upper side wall and the lower side wall located on the shell opening side are connected oppositely to form a closed shell body, and the battery pack body is packaged in the shell body.

[0045] In the upper side wall of the embodiment, a plurality of buckle parts are provided, and a plurality of buckle parts are provided on the lower side wall. When the upper shell 22 and the lower shell 21 are connected oppositely, the buckle parts are buckled to fix the upper shell 22 and the lower shell 21 together without the need for screw or glue connection, which is beneficial to improve the assembly convenience of the battery pack and improve the production efficiency of the battery pack.

[0046] In addition, the shell structure of the upper shell 22 and the lower shell 21 matched in the embodiment can use one of them as a universal shell, such as but not limited to selecting the lower shell 21 as the universal shell, and introducing battery pack structure series products on this basis. By sharing the lower shell 21, different thicknesses of the upper shell 22 can be matched to assemble battery packs of different thicknesses to obtain battery pack shells of different specifications. It can be seen that the use of this scheme is beneficial to effectively reduce the mold cost, reduce the cost of products, and enhance the competitiveness of products.

[0047] The outer surface of the shell body of the embodiment is also provided with an identification area, and the outer surface of the identification area is covered with an identification layer. The use of this design is beneficial to improve the protection of the shell body and increase the distinctness and aesthetics of the appearance of the battery pack. The outer periphery of the identification area is also provided with a positioning rib part 3 (preferably) protruding from the outer surface and / or a positioning groove 5 recessed in the outer surface, which is beneficial to the accurate positioning of the label and the protrusion or recess is beneficial to the user's convenient grabbing and carrying of the battery pack, and enhances the rigidity of the shell body.

[0048] As an example of the embodiment, the identification area and the positioning rib part 3 or the positioning groove 5 described above can be provided on the outer surface of the shell top and / or the shell bottom. The identification area and the positioning rib part 3 or the positioning groove 5 can also be further provided on the side wall to integrate the identification areas on both sides with the identification area on the shell top and / or the shell bottom, thereby improving the overall consistency of the product appearance and improving the visual impact effect.

[0049] As an example of the embodiment, two pieces of label sheet 4 (such as but not limited to film) with good toughness can be used to be attached oppositely to the opposite sides of the shell body. The middle part of each label sheet 4 is attached to the outer surface of the upper side wall and the lower side wall. The upper edge of the label sheet 4 extends from the top of the upper side wall and closely adheres to the top surface of the shell top. The lower edge of the label sheet 4 extends from the bottom of the lower side wall and closely adheres to the bottom surface of the shell bottom. The use of this design is beneficial to further improve the fastening degree and reliability of the connection between the upper shell 22 and the lower shell 21, and on the other hand, it improves the overall degree of the product appearance and improves the visual effect. For example, but not limited to, the product or manufacturer's logo or other patterns or colors can be provided on the label sheet 4 to improve the appearance of the battery.

[0050] As an example of the present embodiment, further silk printing treatment can be performed on the surface of the positioning rib 3 and / or the surface of the positioning groove 5 of the shell body using pigments to form a silk printing layer with color and / or patterns thereon, thereby further improving the appearance of the product.

[0051] As an example of the present embodiment, a groove 5 is further arranged on the end surface of the upper side wall of the upper shell 22 at the shell opening, and a ridge 6 with a height corresponding to that of the groove 5 is arranged on the end surface of the lower side wall of the lower shell 21 at the shell opening. When the upper shell 22 and the lower shell 21 are oppositely buckled at the shell opening, the ridge 6 on the end surface oppositely faces the groove 5, and the end surfaces on the inner side and the outer side of the ridge 6 and the groove 5 face each other. The upper shell 22 and the lower shell 21 are tightly buckled and connected together, thereby improving the moisture-proof and dust-proof capability of the shell body.

[0052] In addition, a plurality of through holes or recesses 8 (or protrusions) can be further arranged on the groove wall of the groove 5 as buckling parts, and a plurality of protrusions 7 (or a plurality of through holes or recesses 8 matched with the protrusions 7) can be arranged on the ridge 6 as buckling parts. When the upper shell 22 and the lower shell 21 are oppositely buckled at the shell opening, and the ridge 6 is inserted into the groove 5, each protrusion 7 between the ridge 6 and the groove 5 is elastically deformed and inserted into each through hole or recess 8, thereby achieving buckling and limiting.

[0053] As an example of the present embodiment, a plurality of sockets are further arranged on one of the upper shell 22 or the lower shell 21 of the shell body, and two electrode insertion tubes 11, such as but not limited to copper tubes, are arranged in the two sockets, respectively. The two electrode insertion tubes 11 are electrically connected to the positive “+” and the negative “-” of the battery body through copper wires capable of passing large current, so that the two copper tubes are used as discharge sockets and charging sockets to be connected with external electrical equipment or charging power supply.

[0054] As an example of the present embodiment, in order to improve the prominence of the electrodes, identification parts “+” and “-” are further arranged beside the electrode insertion tubes 11 on the surface of the shell body. The identification parts can be stickers, but are not limited to laser silk printing, and can also be protrusions or recesses formed during the injection molding of the upper shell or the lower shell.

[0055] It should be noted that the present embodiment takes the arrangement of the electrode insertion tubes 11 on the shell body as an example, and is not limited thereto. In fact, a lead wire can also be arranged, and a power plug or socket is connected to the end of the lead wire.

[0056] The battery pack of the present embodiment can be applied to electric model cars, electric racing cars, etc., and the power supply interface of the driving circuit of the electric equipment is electrically connected with the electrode interface of the battery pack of the present embodiment.

[0057] Similarly, as an example of the present embodiment, a voltage sampling socket 24 is also provided on the shell. A copper tube with a smaller diameter than the electrode insertion tube 11 can be used as the voltage sampling tube 12 to save material costs and facilitate identification. The voltage sampling socket 24 facilitates charging control based on the voltage in the battery pack body during charging, achieving balanced charging and avoiding overcharging, thereby improving charging safety. For example, the voltage sampling socket 24 can be provided between the two electrode sockets 23.

[0058] As an example of the present embodiment, the electrode socket 23 and the voltage sampling socket 24 can be provided on one end of the shell top near the head. A recess 25 can be provided on one end of the shell top below the fixed surface of the shell top, and the electrode socket 23 and the voltage sampling socket 24 can be provided on the recess 25. This arrangement facilitates user insertion and removal, and ensures that the electrode socket 23 does not come into contact with the placement surface when the battery is placed flat, thereby ensuring the electrical safety of the electrode socket 23 and improving moisture resistance.

[0059] As an example of the present embodiment, a protective sleeve 26 is provided on the inner wall of the shell bottom of the upper shell 22 perpendicular to the shell bottom. The protective sleeve 26 supports and insulates the copper tube serving as the electrode insertion tube 11 and the voltage sampling tube 12, and the lower end of the copper tube is tightly limited within the protective sleeve 26.

[0060] A plurality of protective sleeves 27 are also provided on the inner wall of the shell top of the upper shell 22 perpendicular to the shell top. Each protective sleeve 27 surrounds each socket, and the upper end of each copper tube is tightly fitted within each protective sleeve 27 and extends into each socket for external connection.

[0061] The above-described embodiments do not constitute a limitation on the scope of protection of the technical solutions. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the above-described embodiments should be included in the scope of protection of the technical solutions.

Claims

1. A battery pack characterized by, Comprising, a housing, comprising a lower shell and an upper shell which are relatively buckled, the shell mouths of the upper shell and the lower shell are opposite, the shell top and the shell bottom are opposite, the upper side wall and the lower side wall are buckled and connected through the buckle part, the outer surface of the housing is further provided with an identification area, the outer periphery of the identification area is provided with a positioning rib part protruding from the outer surface and / or a positioning groove recessed in the outer surface, and the outer surface of the identification area is covered with an identification layer, a battery body encapsulated in the housing.

2. The battery according to claim 1, characterized in that an electrode socket for external connection is further provided on the shell top or the shell bottom, an electrode insertion tube is provided in the electrode socket, and each electrode insertion tube is electrically connected with an electrode of the battery body.

3. The battery according to claim 2, characterized in that a voltage sampling socket for external connection is further provided on the shell top or the shell bottom, a voltage sampling insertion tube is provided in the voltage sampling socket, and the voltage sampling insertion tube is electrically connected with an electrical node between two single cells in the battery body.

4. The battery according to claim 3, characterized in that a plurality of protective sleeves are fixed to the inner surface of the shell bottom and / or the shell top, and each electrode insertion tube and voltage sampling insertion tube is further tightly sleeved in each protective sleeve.

5. The battery according to claim 3, characterized in that each electrode insertion tube and / or voltage sampling insertion tube is a copper tube.

6. The battery according to claim 1 or 2, characterized in that a groove is provided on the end surface of one of the upper side wall and the lower side wall, and a matching convex rib is provided on the end surface of the other, when the upper shell and the lower shell are buckled, the convex rib extends into the groove, and the end surfaces of the upper side wall and the lower side wall on the inner side and the outer side of the convex rib and the groove are attached.

7. The battery according to claim 6, characterized in that a plurality of through holes or recesses are provided on one of the groove wall of the groove and the convex rib, and a protrusion is provided on the other as a buckle part, the upper side wall and the lower side wall are buckled and connected through the buckle part, specifically, each protrusion is buckled and positioned in each through hole or recess.

8. The battery according to claim 1 or 2, characterized in that two label pieces are further provided on the opposite sides of the housing, the outer surface of the middle upper side wall and the lower side wall of each label piece, the upper edge extending from the bottom edge of the upper side wall and being attached to the top surface of the shell top, and the lower edge extending from the bottom edge of the lower side wall and being attached to the bottom surface of the shell bottom.

9. The battery according to claim 1 or 2, characterized in that a silk screen layer is further provided on the surface of the positioning rib part and / or the positioning groove.

10. An electrically powered device, characterized by Comprising: a driving circuit, a power input end of the driving circuit is electrically connected with the electrode interface of the battery according to any one of claims 1 to 9.

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