Modularized lithium battery energy storage device

Abstract

The utility model discloses a modularized lithium battery energy storage device, and relates to the technical field of batteries. The energy storage device comprises a shell, a battery cell and a cap, the shell is a cylindrical shell made of a transparent material, the inner side wall of the upper end of the shell is fixedly connected with a limiting ring in a surrounding manner in the circumferential direction, the limiting ring is provided with a plurality of groups of quick insertion structures, the lower part of the limiting ring is fixedly connected with an insulating protection plate, and the upper end surface of the insulating protection plate is fixedly connected with a positive plate and a negative plate which are exposed from a center hole of the limiting ring; the battery cell is inserted into the accommodating cavity of the shell, the positive electrode end of the battery cell is electrically connected with the positive plate, and the negative electrode end is electrically connected with the negative plate; the cap is detachably connected to the lower end of the shell and is made of a conductive material, and the inner bottom face of the cap is provided with a protruding part used for abutting against the negative electrode end of the battery cell. The energy storage device can be used as an external battery to realize quick connection with a power utilization module, and can also be used as a traditional built-in battery, and functional parts are modularly designed.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a modular lithium battery energy storage device. Background Technology

[0002] Lithium-ion batteries are a type of rechargeable battery that primarily functions by the movement of lithium ions between the positive and negative electrodes. Common lithium-ion battery shapes include cylindrical ones, where the positive and negative electrodes are located at opposite ends. The positive electrode is a protruding cap at the top, and the negative electrode is the flat bottom of the casing. In use, they are typically connected in series to power a power module, or connected in parallel with a suitable battery housing, thus limiting their application.

[0003] In order to solve the problem of the positive and negative electrodes of lithium-ion batteries being led out in opposite directions, lithium-ion batteries with the positive and negative electrodes at the same end have appeared in the existing technology. However, lithium-ion batteries with the positive and negative electrodes at the same end still have the following shortcomings: (1) Lithium-ion batteries lack a structure for quick connection with power modules, which is not conducive to being used as external batteries connected to power modules; (2) The related functional components of lithium-ion batteries are not modularly designed, and the degree of replacement is low, which is not conducive to building lithium-ion batteries with various specifications and functions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a modular lithium battery energy storage device that can be used as an external battery to achieve quick connection with the power module, and can also be used as a traditional built-in battery, with modular design of functional components.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A modular lithium battery energy storage device includes a casing, a battery cell, and a cap. The casing is a transparent cylindrical shell with a limiting ring fixedly connected circumferentially around its upper inner wall. The limiting ring has multiple quick-connect structures. An insulating protective plate is fixedly connected below the limiting ring, and a positive electrode and a negative electrode are fixedly connected to the upper end of the insulating protective plate, which are exposed through the central hole of the limiting ring. The battery cell is inserted into the cavity of the casing, with its positive terminal electrically connected to the positive electrode and its negative terminal electrically connected to the negative electrode. The cap is detachably connected to the lower end of the casing. The cap is made of conductive material and has a protrusion on its inner bottom surface for abutting against the negative terminal of the battery cell.

[0007] As a further improvement to the above technical solution:

[0008] Multiple quick-connect structures are spaced apart on the limiting ring. The quick-connect structure is an L-shaped channel, which includes a vertical channel and a horizontal channel that are connected. The vertical channel runs vertically through the limiting ring, and the horizontal channel is arranged along the circumference of the limiting ring and is located at the bottom of the limiting ring.

[0009] Furthermore, a positioning groove is provided at the end of the horizontal channel, which is located at the bottom of the limiting ring and communicates with the horizontal channel.

[0010] The lower outer wall of the outer shell is surrounded by a number of inverted L-shaped insertion grooves at intervals. The insertion grooves include a vertical section, an angled transition section and a horizontal section connected in sequence. The vertical section extends to the lower end face of the outer shell, the angled transition section is located between the vertical section and the horizontal section, and a positioning blind hole is provided on the horizontal section on the outer wall of the outer shell. The cap is fitted onto the lower end of the outer shell, and the inner wall of the cap is surrounded by a number of positioning protrusions that match the positioning blind holes at intervals.

[0011] Furthermore, the lower end of the vertical section is set as an opening with a chamfer to facilitate the positioning protrusion entering the insertion groove.

[0012] The positive electrode is a circular thin sheet, and the negative electrode is a circular thin sheet. The positive and negative electrode sheets are concentrically arranged, with the negative electrode sheet located outside the positive electrode sheet. An insulating connecting plate is fixedly connected to the bottom of the insulating protection plate. An elastic contact is provided at the bottom of the insulating connecting plate. One end of the elastic contact is fixedly connected to the insulating connecting plate and electrically connected to the positive electrode sheet, while the other end is used to abut against the positive terminal of the battery cell. A metal connecting strip is provided at the bottom of the insulating protection plate. One end of the metal connecting strip is fixedly connected to the insulating protection plate and electrically connected to the negative electrode sheet, while the other end extends to the lower part of the outer casing and is electrically connected to the negative terminal of the battery cell.

[0013] Furthermore, the elastic contact element is a spring.

[0014] Furthermore, the insulating connecting plate is provided with clearance openings for the passage of metal connecting strips.

[0015] An NFC sticker is affixed to the bottom of the cap. The back of the NFC sticker has an NFC antenna and an NFC chip, enabling NFC functionality and allowing for product traceability and other operations.

[0016] The outer wall of the shell has anti-slip texture to increase friction when gripping and make it easy to carry.

[0017] The beneficial effects of this utility model are:

[0018] The energy storage device can be used as an external battery handle, with the positive and negative electrodes positioned at the same end (top). A quick-connect mechanism is provided on the upper limit ring, allowing the upper end of the energy storage device to connect to the power module. The power module's connector has a matching connection block, enabling rapid connection between the energy storage device and the power module. Alternatively, the energy storage device can be used as an internal battery. The lower cap of the energy storage device is electrically connected to the negative terminal of the battery cell via a protrusion, providing negative power extraction. The upper positive electrode provides positive power extraction, enabling internal use. The outer shell is made of transparent material and supports… Consumers can create their own illustrations on the outside of the battery cell. The cap and the outer shell are detachable, making it easy for consumers to replace the internal battery cell and the illustrations on the cell. All functional components of this energy storage device are modularly designed. Each functional component is designed as an independent, detachable, and replaceable standardized module. By combining these modules, energy storage devices of different specifications and functions can be constructed, which can be easily replaced during subsequent maintenance. The insulation protection board can be designed as a simple protection board structure, a protection board structure with a light-emitting module, or a protection board structure with a charging module, depending on the functional requirements. The cavity size of the outer shell can be set according to the size of the battery cell. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 for Figure 2 A magnified view of region A in the diagram;

[0022] Figure 4 for Figure 2 A magnified view of region B in the diagram;

[0023] Figure 5 This is a schematic diagram of the connection structure between the positive electrode, negative electrode and the battery cell of this utility model;

[0024] Figure 6 This is a schematic diagram of the connection structure between the positive electrode, negative electrode and battery cell of this utility model from another perspective;

[0025] Figure 7 This is a schematic diagram of the structure of the cap of this utility model.

[0026] The following are the labels in the diagram: 1. Outer shell; 11. Insertion groove; 111. Vertical section; 1111. Chamfer; 112. Angled transition section; 113. Horizontal section; 12. Positioning blind hole; 13. Anti-slip texture; 2. Battery cell; 21. Positive terminal; 22. Negative terminal; 3. Cap; 31. Protrusion; 32. Positioning protrusion; 4. Limiting ring; 41. Quick-connect structure; 411. Vertical channel; 412. Horizontal channel; 42. Positioning groove; 5. Insulating protection plate; 6. Positive electrode plate; 7. Negative electrode plate; 8. Insulating connecting plate; 81. Clearance opening; 9. Elastic contact; 10. Metal connecting strip. Detailed Implementation

[0027] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of this application more complete and to fully convey the concept of the present application to those skilled in the art.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 of this application. 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "several" or "more than" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly 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 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 according to the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. Moreover, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] like Figures 1-2As shown in the figure, the modular lithium battery energy storage device provided by this utility model embodiment includes a shell 1, a battery cell 2, and a cap 3. The shell 1 is a transparent cylindrical shell, with a limiting ring 4 fixedly connected circumferentially around its upper inner wall. The limiting ring 4 has multiple quick-connect structures 41. An insulating protective plate 5 is fixedly connected below the limiting ring 4. A positive electrode 6 and a negative electrode 7, exposed through the central hole of the limiting ring 4, are fixedly connected to the upper surface of the insulating protective plate 5. The positive electrode 6 is connected to the positive terminal of an external device, and the negative electrode 7 is connected to the negative terminal of the external device. The battery cell 2 is inserted into the cavity of the shell 1. Cell 2 is a cylindrical lithium battery, and the cavity size of the outer casing 1 is set to be compatible with cylindrical lithium batteries of models such as 18650 to 21700. The positive and negative electrodes of cell 2 are located at both ends of cell 2, respectively. The positive electrode 21 of cell 2 is electrically connected to the positive electrode plate 6, and the negative electrode 22 is electrically connected to the negative electrode plate 7. The cap 3 is detachably connected to the lower end of the outer casing 1. The cap 3 is made of conductive material and its inner bottom surface is provided with a protrusion 31 for abutting against the negative electrode 22 of cell 2.

[0030] In this embodiment, the energy storage device can be used as an external battery handle. The positive electrode 6 and the negative electrode 7 are positioned at the same end (upper end) of the energy storage device, and the upper end of the limiting ring 4 is provided with a quick-connect structure 41. The upper end of the energy storage device is connected to the power module. The connector of the power module is provided with a connecting block that matches the quick-connect structure 41, which enables quick connection between the energy storage device and the power module. The positive electrode 6 and the negative electrode 7 at the upper end of the energy storage device also support magnetic connection. When connected with the matching magnetic connector, operations such as charging the battery cell 2 can be performed. The energy storage device can also be used as an internal battery. The cap 3 at the lower end of the energy storage device is electrically connected to the negative terminal 22 of the battery cell 2 through the protrusion 31. The cap 3 has a negative terminal power extraction function. The positive electrode plate 6 at the top of the energy storage device has a positive electrode power extraction function and can be used as a built-in battery; the outer shell 1 is made of transparent material, allowing consumers to create their own illustrations on the outside of the battery cell 2; the cap 3 is detachably connected to the outer shell 1, making it easy for consumers to replace the internal battery cell 2 and the illustrations on the battery cell 2; all functional components of the energy storage device are modularly designed, that is, each functional component is designed as an independent, detachable, and replaceable standardized module. By combining these modules, energy storage devices of different specifications and functions can be constructed, which can be easily replaced during subsequent maintenance; optionally, the insulating protection plate 5 can be designed as a simple protection plate structure, a protection plate structure with a light-emitting module, or a protection plate structure with a charging module, depending on the functional requirements.

[0031] refer to Figure 3Multiple quick-connect structures 41 are spaced apart on the limiting ring 4. Each quick-connect structure 41 is an L-shaped channel, including a vertical channel 411 and a horizontal channel 412. The vertical channel 411 runs vertically through the limiting ring 4, and the horizontal channel 412 is arranged circumferentially along the limiting ring 4 and located at the bottom of the limiting ring 4. The connector of the power module is provided with multiple connecting blocks that match the quick-connect structures 41. When the connector is plugged into the upper end of the energy storage device, the connecting block is first inserted from the vertical channel 411. Then, the power module is rotated at a certain angle, and the connecting block moves along the horizontal channel 412 until the end of the horizontal channel 412. Due to the limiting effect of the limiting ring 4 on the connecting block, the power module and the energy storage device are locked together. To unlock, the power module needs to be rotated back at a certain angle.

[0032] Optionally, a positioning groove 42 is provided at the end of the horizontal channel 412. The positioning groove 42 is located at the bottom of the limiting ring 4 and communicates with the horizontal channel 412. When the connecting block moves to the end of the horizontal channel 412, it can connect with the positioning groove 42 to further improve the connection stability.

[0033] refer to Figure 4 and Figure 7 The outer wall of the lower end of the outer casing 1 is provided with a plurality of inverted L-shaped insertion grooves 11 arranged around and spaced apart. The insertion grooves 11 include a vertical section 111, an angled transition section 112 and a horizontal section 113 connected in sequence. The vertical section 111 extends to the lower end face of the outer casing 1. The angled transition section 112 is located between the vertical section 111 and the horizontal section 113. The horizontal section 113 is provided with a positioning blind hole 12 on the outer wall of the outer casing 1. The inner wall of the cap 3 is provided with a plurality of positioning protrusions 32 that match the positioning blind holes 12. When the cap 3 is fitted onto the lower end of the outer casing 1, its positioning protrusions 32 can move along the vertical section 111 and the angled transition section 112. When the cap 3 is rotated by a certain angle, the positioning protrusions 32 move along the horizontal section 113 until the positioning protrusions 32 are just engaged with the positioning blind holes 12, thus realizing the locking connection between the cap 3 and the outer casing 1.

[0034] Optionally, the lower end of the vertical section 111 is provided as an opening with a chamfer 1111 to facilitate the positioning protrusion 32 entering the insertion groove 11.

[0035] Optionally, an NFC sticker (not shown in the picture) is affixed to the bottom of the cap 3. The back of the NFC sticker has an NFC antenna and an NFC chip. The NFC component is used to realize product traceability and to carry out more creative NFC applications.

[0036] refer to Figures 5-6The positive electrode 6 is a circular thin sheet, and the negative electrode 7 is a circular thin sheet. The positive electrode 6 and the negative electrode 7 are arranged concentrically, and the negative electrode 7 is located outside the positive electrode 6. An insulating connecting plate 8 is fixedly connected to the bottom of the insulating protection plate 5. An elastic contact 9 is provided at the bottom of the insulating connecting plate 8. One end of the elastic contact 9 is fixedly connected to the insulating connecting plate 8 and electrically connected to the positive electrode 6. The other end is used to abut against the positive terminal 21 of the battery cell 2. A metal connecting strip 10 is provided at the bottom of the insulating protection plate 5. One end of the metal connecting strip 10 is fixedly connected to the insulating protection plate 5 and electrically connected to the negative electrode 7. The other end extends to the lower part of the outer shell 1 and is electrically connected to the negative terminal 22 of the battery cell 2.

[0037] Optionally, the elastic contact 9 is a spring.

[0038] Optionally, the insulating connecting plate 8 is provided with a clearance opening 81 for the metal connecting strip 10 to pass through.

[0039] refer to Figures 1-2 The outer wall of the outer shell 1 is provided with anti-slip texture 13.

[0040] It should be understood that all the above embodiments are exemplary and not restrictive. Any modifications, equivalent changes and alterations made by those skilled in the art to the specific embodiments described above under the concept of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A modular lithium battery energy storage device, characterized in that: The device includes a housing, a battery cell, and a cap. The housing is a transparent cylindrical shell with a limiting ring fixedly connected circumferentially around its upper inner wall. The limiting ring has multiple quick-connect structures, and an insulating protective plate is fixedly connected below the limiting ring. The upper end of the insulating protective plate has a positive electrode and a negative electrode exposed through the central hole of the limiting ring. The battery cell is inserted into the cavity of the housing, with its positive terminal electrically connected to the positive electrode and its negative terminal electrically connected to the negative electrode. The cap is detachably connected to the lower end of the housing and is made of conductive material. Its inner bottom surface has a protrusion for abutting against the negative terminal of the battery cell.

2. The modular lithium battery energy storage device according to claim 1, characterized in that: Multiple quick-connect structures are spaced apart on the limiting ring. Each quick-connect structure is an L-shaped channel, which includes a vertical channel and a horizontal channel. The vertical channel runs vertically through the limiting ring, and the horizontal channel is arranged circumferentially along the limiting ring and located at the bottom of the limiting ring.

3. The modular lithium battery energy storage device according to claim 2, characterized in that: A positioning groove is provided at the end of the horizontal channel. The positioning groove is located at the bottom of the limiting ring and communicates with the horizontal channel.

4. The modular lithium battery energy storage device according to claim 1, characterized in that: The lower outer wall of the housing is provided with a plurality of inverted L-shaped insertion grooves at intervals. The insertion grooves include a vertical section, an oblique transition section and a horizontal section connected in sequence. The vertical section extends to the lower end face of the housing. The oblique transition section is located between the vertical section and the horizontal section. The horizontal section is provided with a positioning blind hole on the outer wall of the housing. The cap is fitted onto the lower end of the housing. The inner wall of the cap is provided with a plurality of positioning protrusions at intervals that match the positioning blind holes.

5. The modular lithium battery energy storage device according to claim 4, characterized in that: The lower end of the vertical section is provided with an opening, and the opening is chamfered.

6. The modular lithium battery energy storage device according to claim 1, characterized in that: The positive electrode is a circular thin sheet, and the negative electrode is a circular thin sheet. The positive and negative electrode are concentrically arranged, with the negative electrode located outside the positive electrode. An insulating connecting plate is fixedly connected to the bottom of the insulating protection plate. An elastic contact is provided at the bottom of the insulating connecting plate. One end of the elastic contact is fixedly connected to the insulating connecting plate and electrically connected to the positive electrode, while the other end is used to abut against the positive terminal of the battery cell. A metal connecting strip is provided at the bottom of the insulating protection plate. One end of the metal connecting strip is fixedly connected to the insulating protection plate and electrically connected to the negative electrode, while the other end extends to the lower part of the outer casing and is electrically connected to the negative terminal of the battery cell.

7. The modular lithium battery energy storage device according to claim 6, characterized in that: The elastic contact element is a spring.

8. The modular lithium battery energy storage device according to claim 6, characterized in that: The insulating connecting plate is provided with a clearance opening for the metal connecting strip to pass through.

9. The modular lithium battery energy storage device according to claim 1, characterized in that: An NFC sticker is affixed to the bottom of the cap, and an NFC antenna and NFC chip are located on the back of the NFC sticker.

10. The modular lithium battery energy storage device according to claim 1, characterized in that: The outer wall of the outer casing is provided with anti-slip texture.

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