Battery nesting structure and rechargeable battery adopting same

Abstract

The invention relates to the technical field of batteries, in particular to a battery nesting structure and a rechargeable battery adopting the same, and the battery nesting structure comprises a battery cell, a battery pack, a battery pack and a battery pack, the occupying shell comprises a first shell and a second shell; the first shell is detachably connected to one end of the outer part of the battery cell in a sleeving manner. According to the rechargeable battery, the occupying shell is arranged outside the battery cell of the rechargeable battery, and the limiting assembly is arranged on the battery cell, so that when the occupying shell is used as a protective shell to sleeve the battery cell, a wire in the occupying shell is in a disconnected state, accidental short circuit of the positive electrode and the negative electrode of the battery cell is avoided, and the battery cell can be used as a single high-voltage battery; the occupying shell can be separated from the battery cell and independently connected to form a wire, when the occupying shell is used as the wire to be electrically connected with the battery cell, the occupying shell can be adaptively installed in a battery bin supporting two dry batteries connected in series to form a complete conductive path, the battery cell can be circularly charged, the batteries do not need to be frequently replaced, and resource waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a battery nesting structure and a rechargeable battery using the structure. Background Technology

[0002] Currently, many electronic devices use multiple dry cell batteries connected in series for power, such as two AA or AAA batteries connected in series. However, dry cell batteries are not recyclable and may swell or leak after long-term storage, causing corrosion of the battery compartment terminals and damaging the equipment.

[0003] With the development of rechargeable battery technology, environmentally friendly and economical rechargeable cells are gradually being used in household devices. Common examples include lithium-ion or sodium-ion cells, where the voltage of a single cell is equivalent to the output voltage of two series-connected dry cell batteries. However, the battery compartment structure of existing devices is usually a structure of multiple parallel or coaxially connected battery slots. Individual cells are not compatible with the existing battery compartment structure, which means that users need to purchase adapters or modify their devices to use rechargeable cells, increasing the cost and complexity of use. In addition, the electrode contact in traditional battery compartments mostly relies on the elastic compression of metal springs. After long-term use, the springs are prone to fatigue, leading to poor contact and affecting the stable power supply of the device. Summary of the Invention

[0004] The purpose of this invention is to provide a battery nesting structure and a rechargeable battery using the structure, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery nesting structure and a rechargeable battery using the structure, comprising:

[0007] The battery cell has a positive terminal at its axial top and a negative terminal at its axial bottom.

[0008] The spacer housing includes a first housing and a second housing;

[0009] The first housing is detachably fitted and connected to one end of the battery cell, and a first wire is provided inside the first housing.

[0010] The second housing is detachably sleeved and connected to the other end of the battery cell relative to the first housing, and a second wire is provided in the second housing;

[0011] The first housing is provided with a connection end, and the second housing is provided with a connection component corresponding to the connection end, so that the first housing and the second housing can be connected to each other without the battery cell.

[0012] A limiting component is disposed on the battery cell and located between the end faces where the first housing and the second housing are connected. When the first housing and the second housing are sleeved on the battery cell, the limiting component enables the first housing and the second housing to form a unique first connection state. In the first connection state, the first wire and the second wire are staggered.

[0013] When the first housing and the second housing are disconnected from the battery cell and connected to each other, the first housing and the second housing also have a second connection state. In the second connection state, the first wire and the second wire are in contact and connected to transmit charge.

[0014] Preferably, the limiting component includes a protrusion fixed to the sidewall of the battery cell;

[0015] The first housing sidewall is provided with a first fitting groove that matches the shape of one end of the protrusion;

[0016] The second housing sidewall is provided with a second fitting groove that matches the shape of the other end of the protrusion.

[0017] Preferably, the connecting end includes a first connecting groove and a second connecting groove disposed on the first housing, wherein the first connecting groove and the second connecting groove have the same structure and are disposed opposite to each other;

[0018] The connecting component includes a first tenon and a second tenon connected to the second housing, wherein the first tenon and the second tenon have the same structure and are opposite to each other;

[0019] The first connection state is that the first connecting groove is connected to the first latch, and the second connecting groove is connected to the second latch.

[0020] The second connection state is that the first connecting groove is connected to the second latch, and the second connecting groove is connected to the first latch.

[0021] Preferably, the first housing is a first sleeve with an opening at the top axially, the first sleeve is detachably sleeved on the bottom end of the battery cell in the axial direction, and the first connecting groove and the second connecting groove are symmetrically arranged on the two side walls of the opening end of the first sleeve in the radial direction.

[0022] The second housing is a second sleeve with an opening at the bottom end along the axis. The second sleeve is detachably sleeved and connected to the top end of the battery cell. The first tenon and the second tenon are both connected to the bottom wall of the opening end of the second sleeve and are arranged opposite to each other.

[0023] Preferably, the first wire includes a first terminal, which is disposed on the bottom wall of the first sleeve;

[0024] The first terminal is connected to a first electrode plate, and the other end of the first electrode plate is disposed in the second connecting groove.

[0025] Preferably, the second wire includes a second terminal, which is disposed on the bottom wall of the second sleeve;

[0026] The second terminal is connected to a second electrode plate, and the other end of the second electrode plate is disposed in the first latch.

[0027] Preferably, the first housing is a first half-shell with a radial opening, and the first connecting groove and the second connecting groove are disposed opposite to each other on the two end sidewalls of the opening of the first half-shell, and are located in the middle of the axial direction of the first half-shell;

[0028] The second housing is a radially open second half-shell disposed opposite to the first half-shell. The first tenon and the second tenon are disposed opposite to each other on both sides of the opening of the second half-shell and are located in the middle of the axial direction of the second half-shell.

[0029] Preferably, the first wire includes a third terminal and a fourth terminal respectively disposed on the axial end walls of the second half-shell;

[0030] The third terminal is connected to a third electrode plate, and the other end of the third electrode plate is disposed in the second connecting groove;

[0031] The fourth terminal is connected to a fourth electrode plate, and the other end of the fourth electrode plate is disposed in the second connecting groove at the end opposite to the third electrode plate;

[0032] The third electrode plate and the fourth electrode plate are electrically isolated from each other.

[0033] Preferably, the second wire includes a fifth electrode piece, which is disposed in the first latch;

[0034] In the second connection state, the first latch is connected to the second connection groove, so that the two ends of the fifth electrode plate are connected to the third electrode plate and the fourth electrode plate respectively.

[0035] A rechargeable battery comprising the battery nesting structure as described in any one of claims 1-9.

[0036] Compared with the prior art, the present invention provides a battery nesting structure and a rechargeable battery using the structure, which has the following beneficial effects:

[0037] This invention provides a spacer shell around the rechargeable battery cell and a limiting component on the cell to ensure that the internal wires of the spacer shell are disconnected when it is used as a protective outer shell. This prevents accidental short circuits between the positive and negative terminals of the cell, allowing the cell to be used as a single high-voltage battery. The spacer shell can be detached from the cell and connected independently to form a wire. When the spacer shell is electrically connected to the cell as a wire, it can be fitted into a battery compartment that supports two series-connected dry cell batteries to form a complete conductive path. The cell can be recharged repeatedly, eliminating the need for frequent battery replacements and reducing resource waste. Attached Figure Description

[0038] Figure 1 This is an isometric structural schematic diagram of Embodiment 1 of the present invention;

[0039] Figure 2 This is a schematic diagram of the isometric exploded structure of Embodiment 1 of the present invention;

[0040] Figure 3 This is a schematic diagram of a partial isometric cross-section of an embodiment of the present invention.

[0041] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of a local structure at point A;

[0042] Figure 5 This is a top view of the connection structure between Embodiment 1 of the present invention and the parallel battery compartment;

[0043] Figure 6 This is a top view of the connection structure between Embodiment 1 of the present invention and the series battery compartment;

[0044] Figure 7 This is a schematic diagram of the isometric structure of Embodiment 2 of the present invention;

[0045] Figure 8 This is a schematic diagram of the isometric exploded structure of Embodiment 2 of the present invention;

[0046] Figure 9 This is a schematic diagram of the isometric exploded structure of Embodiment 2 of the present invention (second perspective).

[0047] Figure 10 This is a schematic diagram of a partial isometric cross-section of Embodiment 2 of the present invention;

[0048] Figure 11 This is an isometric exploded view of the connection structure between the first half-shell and the first wire in Embodiment 2 of the present invention;

[0049] Figure 12 This is an isometric schematic diagram of the connection structure between the second half-shell and the fifth electrode sheet in Embodiment 2 of the present invention;

[0050] Figure 13For the present invention Figure 8 Enlarged schematic diagram of the local structure at point B;

[0051] Figure 14 This is a top view of the parallel battery compartment connection structure of Embodiment 2 of the present invention;

[0052] Figure 15 This is a top view of the connection structure between Embodiment 2 of the present invention and the series battery compartment;

[0053] Figure 16 This is a schematic diagram of the isometric structure of Embodiment 3 of the present invention;

[0054] Figure 17 This is a schematic diagram of the isometric structure of the third conductor in Embodiment 3 of the present invention;

[0055] Figure 18 This is a top view of the connection structure between Embodiment 3 of the present invention and the parallel battery compartment;

[0056] Figure 19 This is a top view of the connection structure between Embodiment 3 of the present invention and the series battery compartment.

[0057] In the diagram: 1. Battery cell; 2. Restriction component; 201. Protrusion; 3. Placeholder shell; 4. First housing; 401. First sleeve; 402. First half-shell; 403. First fitting groove; 5. Second housing; 501. Second sleeve; 502. Second half-shell; 503. Second fitting groove; 6. First wire; 601. First terminal; 602. First electrode plate; 603. Third terminal; 604. Third electrode plate; 605. Fourth terminal; 606. Fourth electrode plate; 7. Second wire; 701. Second terminal; 702. Second electrode plate; 703. Fifth electrode plate; 8. Connecting end; 801. First connecting groove; 802. Second connecting groove; 9. Connecting component; 901. First latch; 902. Second latch; 10. Third wire; 1001. Fifth terminal; 1002. Sixth electrode plate. Detailed Implementation

[0058] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0059] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0060] Example 1, as Figure 1 - Figure 6 As shown, a battery nesting structure and a rechargeable battery using the structure include:

[0061] The battery cell 1 has a positive terminal at its axial top end and a negative terminal at its axial bottom end. The battery cell 1 is a reusable rechargeable battery cell 1.

[0062] In some embodiments, the diameter of a common AA dry cell is 14mm and the height is 50mm, while the diameter of a AAA dry cell is 10mm and the height is 45mm. A commonly used rechargeable cell 1 has dimensions comparable to either an AA or AAA dry cell, specifically either a diameter of 13mm and a height of 50mm or a diameter of 9mm and a height of 45mm. Its structure includes a hard carbon negative electrode and a layered oxide positive electrode, making it resistant to long-term storage. Even when not in use for extended periods, it remains internally stable and does not swell or leak like a dry cell battery after prolonged periods of inactivity.

[0063] The spacer shell 3 includes a first shell 4 and a second shell 5, wherein the wall thickness of the first shell 4 and the second shell 5 is preferably in the range of 0.5 mm to 1 mm;

[0064] The first housing 4 is detachably sleeved and connected to one end of the outside of the battery cell 1. The first housing 4 is provided with a first wire 6. When the first housing 4 is sleeved on the battery cell 1, the first wire 6 is electrically connected to the negative electrode of the battery cell 1.

[0065] The second housing 5 is disposed relative to the first housing 4 and is detachably sleeved and connected to the other end of the battery cell 1. The second housing 5 is provided with a second wire 7. When the second housing 5 is sleeved on the battery cell 1, the second wire 7 is electrically connected to the positive electrode of the battery cell 1.

[0066] The first housing 4 and the second housing 5 are fitted onto the outside of the battery cell 1, which can protect the battery cell 1. At the same time, the first wire 6 and the second wire 7 are respectively fixed to the outside of the battery cell 1 to prevent loss.

[0067] In use, the first housing 4 and the second housing 5 are combined to form a second connection state, so that the first wire 6 and the second wire 7 are connected to form a circuit. The first housing 4 and the second housing 5 are connected to form a placeholder housing 3 to occupy one empty space in the series battery compartment and connect with the contacts set on the battery compartment, replacing two series dry batteries installed in the battery compartment for use.

[0068] The first housing 4 is provided with a connecting end 8, and the second housing 5 is provided with a connecting component 9 that is connected to the connecting end 8, so that the first housing 4 and the second housing 5 can be connected to each other without the battery cell 1.

[0069] The limiting component 2 is disposed on the battery cell 1 and is located between the end faces where the first housing 4 and the second housing 5 are connected. When the first housing 4 and the second housing 5 are fitted onto the battery cell 1, the limiting component 2 enables the first housing 4 and the second housing 5 to form a unique first connection state. In the first connection state, the first wire 6 and the second wire 7 are staggered.

[0070] When the first housing 4 and the second housing 5 are disconnected from the battery cell 1 and connected to each other, the first housing 4 and the second housing 5 also have a second connection state. In the second connection state, the first wire 6 and the second wire 7 are in contact and connected to transmit charge, so that the first housing 4 and the second housing 5 in the second connection state form a wire for electrically connecting the battery cell 1 to the battery compartment.

[0071] Furthermore, the limiting component 2 includes a protrusion 201, which is fixed to the side wall of the battery cell 1;

[0072] The side wall of the first housing 4 is provided with a first fitting groove 403 that matches the shape of one end of the protrusion 201. When the first housing 4 is fitted onto the battery cell 1, one end of the protrusion 201 can be matched and fitted with the corresponding first fitting groove 403 to realize the positioning of the first housing 4 on the battery cell 1 and restrict the rotation of the first housing 4 relative to the battery cell 1.

[0073] The second housing 5 has a second fitting groove 503 on its side wall that matches the shape of the other end of the protrusion 201. When the second housing 5 is fitted onto the battery cell 1, the other end of the protrusion 201 is fitted into the second fitting groove 503 to position the second housing 5 and restrict the rotation of the second housing 5 relative to the battery cell 1. Thus, when the first housing 4 and the second housing 5 are fitted onto the battery cell 1, the connecting end 8 and the connecting component 9 are in the first connection state. The first wire 6 and the second wire 7 are staggered to avoid accidental short circuit of the positive and negative poles of the battery cell 1.

[0074] Furthermore, the connecting end 8 includes a first connecting groove 801 and a second connecting groove 802 disposed on the first housing 4. The first connecting groove 801 and the second connecting groove 802 have the same structure and are disposed opposite to each other.

[0075] The connecting component 9 includes a first latch 901 and a second latch 902 connected to the second housing 5. The first latch 901 and the second latch 902 have the same structure and are opposite to each other.

[0076] The first connection state is that the first connecting groove 801 is connected to the first tenon 901, and the second connecting groove 802 is connected to the second tenon 902.

[0077] The second connection state is that the first connecting groove 801 is connected to the second latch 902, and the second connecting groove 802 is connected to the first latch 901. The first latch 901 and the second latch 902 are arranged opposite to each other on the second housing 5, and their dimensions are adapted to the size of the opening of the first connecting groove 801 and the second connecting groove 802, so that the first housing 4 and the second housing 5 can maintain a stable engagement connection in both connection states.

[0078] In the first connected state, due to the precise correspondence between the first latch 901 and the first connecting groove 801, and the second latch 902 and the second connecting groove 802, the first housing 4 and the second housing 5 can be firmly connected when they are fitted onto the battery cell 1, thereby serving as a protective shell for the battery cell 1, while preventing the first wire 6 from contacting the second wire 7 and short-circuiting the battery cell 1.

[0079] When the first housing 4 and the second housing 5 are independently connected to the battery cell 1, in the second connected state, by rotating the first housing 4 or the second housing 5 along the axial direction, the first connecting groove 801 is connected to the second latch 902, and the second connecting groove 802 is connected to the first latch 901, so that the first wire 6 and the second wire 7 come into contact with each other to form a complete wire for connecting the battery cell 1 and the battery compartment.

[0080] Furthermore, the first housing 4 is a first sleeve 401 with an opening at the top of the axial direction. The first sleeve 401 is detachably sleeved on the bottom end of the battery cell 1 in the axial direction. The first connecting groove 801 and the second connecting groove 802 are symmetrically arranged on the two side walls of the opening end of the first sleeve 401 in the radial direction.

[0081] The second housing 5 is a second sleeve 501 with an opening at the bottom of the axial direction. The second sleeve 501 is detachably sleeved and connected to the top of the battery cell 1. The first tenon 901 and the second tenon 902 are both connected to the bottom wall of the opening end of the second sleeve 501 and are arranged opposite to each other. In the first embodiment, the first housing 4 and the second housing 5 are sleeve-type structures sleeved on the outside of the battery cell 1, which not only facilitates installation and disassembly, but also wraps the battery cell 1 and provides insulation and protection for the battery cell 1.

[0082] Furthermore, the first conductor 6 includes a first terminal 601, which is disposed on the bottom wall of the first sleeve 401. The two axial ends of the first terminal 601 protrude from the two ends of the bottom wall of the first sleeve 401, so that when the first sleeve 401 is sleeved on the battery cell 1, the first terminal 601 contacts the negative electrode of the battery cell 1 and conducts electricity, that is, the external circuit can be electrically connected to the negative electrode of the battery cell 1 through the first terminal 601.

[0083] Furthermore, the second conductor 7 includes a second terminal 701, which is disposed on the bottom wall of the second sleeve 501. The second terminal 701 has an annular structure, and the inner ring of the annular structure is also provided with an elastic sheet, so as to facilitate engagement with the positive terminal of the battery cell 1 and conduction with the positive terminal. That is, the external circuit can be electrically connected to the positive terminal of the battery cell 1 through the second terminal 701. This allows the positive and negative terminals of the battery cell 1 to still be electrically connected to the external circuit through the second terminal 701 and the first terminal 601 respectively when the first sleeve 401 and the second sleeve 501 are connected to the outside of the battery cell 1, without affecting the normal use of a single battery cell 1.

[0084] A first electrode plate 602 is connected to a first terminal 601, and the other end of the first electrode plate 602 is disposed in a second connecting groove 802, so that the first electrode plate 602 is electrically connected to the negative electrode of the battery cell 1 through the first terminal 601. A second electrode plate 702 is connected to a second terminal 701, and the other end of the second electrode plate 702 is disposed in a first latch 901, so that the second electrode plate 702 is connected to the positive electrode of the battery cell 1 through the second terminal 701.

[0085] When in the first connection state, the first latch 901 is inserted into the first connection groove 801, and the second latch 902 is inserted into the second connection groove 802, so that the first electrode piece 602 in the second connection groove 802 is misaligned with the second electrode piece 702 on the second latch 902, thereby preventing the positive and negative terminals of the battery cell 1 from being short-circuited by the occupant shell 3.

[0086] When the first sleeve 401 and the second sleeve 501 are detached from the outside of the battery cell 1 and are in the second connection state, the second latch 902 is connected to the first connection groove 801, and the first electrode plate 602 and the second electrode plate 702 are connected, so that the first wire 6 and the second wire 7 are connected and used as wires.

[0087] Example 2, as Figure 7 - Figure 15 As shown, the difference is that the first housing 4 is a first half-shell 402 with a radial opening, and the first connecting groove 801 and the second connecting groove 802 are disposed opposite to each other on the two end side walls of the opening of the first half-shell 402, and are located in the middle of the axial direction of the first half-shell 402.

[0088] The second housing 5 is a radially open second half housing 502 that is disposed opposite to the first half housing 402. The first tenon 901 and the second tenon 902 are disposed opposite to each other on both sides of the opening of the second half housing 502 and are located in the middle of the axial direction of the second half housing 502.

[0089] In Embodiment 2, the first shell 4 and the second shell 5 are two half-shell structures that are interlocked together along the radial direction of the battery cell 1.

[0090] Furthermore, the first conductor 6 includes a third terminal 603 and a fourth terminal 605 respectively disposed on the axial end walls of the second half-shell 502. The first half-shell 402 has a fixing ring structure at both ends in the axial direction, which is used to snap the third terminal 603 and the fourth terminal 605 respectively. The second half-shell 502 has semi-annular grooves at both ends in the axial direction that fit into the fixing ring structure, so that the first half-shell 402 and the second half-shell 502 can be fitted into each other on both sides of the cell 1 in the radial direction.

[0091] Both the axial end faces of the third terminal 603 and the fourth terminal 605 protrude from the corresponding axial end faces of the fixing ring, so that when the first half-shell 402 is sleeved and connected to the battery cell 1, the end faces of the third terminal 603 and the fourth terminal 605 located on the inner side of the first half-shell 402 are electrically connected to the positive and negative terminals of the battery cell 1, respectively. The third terminal 603 has a ring structure and its inner ring is provided with a spring piece, which better connects to the positive terminal of the battery cell 1. This allows the external circuit to be connected to the positive and negative terminals of the battery cell 1 through the third terminal 603 and the fourth terminal 605, respectively, without affecting the independent use of the battery cell 1.

[0092] The third terminal 603 is connected to a third electrode plate 604, and the other end of the third electrode plate 604 is disposed in the second connecting groove 802;

[0093] The fourth terminal 605 is connected to the fourth electrode plate 606. The other end of the fourth electrode plate 606 is located in the second connecting groove 802 at the end opposite to the third electrode plate 604. The third electrode plate 604 and the fourth electrode plate 606 are electrically isolated from each other to form an open circuit, so as to avoid short-circuiting the battery cell 1 when the first half shell 402 is sleeved outside the battery cell 1.

[0094] Furthermore, the second conductor 7 includes a fifth electrode piece 703, which is disposed in the first latch 901 and is disposed only on the inner surface of the first latch 901.

[0095] In the second connection state, the second connection groove 802 of the first half shell 402 is connected to the first latch 901 of the second half shell 502, so that the two ends of the fifth electrode plate 703 are connected to the third electrode plate 604 and the fourth electrode plate 606 respectively to form a wire and then connected to the battery cell 1, and placed in the battery compartment to replace two series-connected dry batteries.

[0096] Example 3, as Figure 16 - Figure 19As shown, the difference lies in that: the occupant shell 3 is a third conductor 10 sleeved on the outside of the battery cell 1. The third conductor 10 has a U-shaped structure and includes a fifth terminal 1001 and a sixth electrode 1002. Specifically, the fifth terminal 1001 is in contact with the negative electrode at the bottom of the battery cell 1 in the axial direction. There are two sets of sixth electrode 1002. The bottom ends of the two sets of sixth electrode 1002 are elastically connected to the fifth terminal 1001 and are arranged opposite to each other at the radial ends of the fifth terminal 1001. The other end of the two sets of sixth electrode 1002 extends upward perpendicularly to the fifth terminal 1001 to be flush with the top surface of the battery cell 1. The sixth electrode 1002 is arc-shaped. The two sets of sixth electrode 1002 cooperate with each other to be detachably clamped and sleeved on the outside of the battery cell 1.

[0097] like Figure 18 , Figure 19 As shown, when the spacer shell 3 is used as a wire, the spacer shell 3 is removed so that the fifth terminal 1001 is electrically connected to the battery cell 1. The two sets of sixth electrode plates 1002 are pinched together towards the center of symmetry so that they can be connected to one pole of the battery cell 1 or to the battery compartment contacts, thereby making the battery cell 1 and the battery compartment contacts connected and conducting.

[0098] A rechargeable battery includes a battery nesting structure. The rechargeable battery achieves flexible combination of cell 1 and external spacer shell 3 through the battery nesting structure. When cell 1 is used alone, the first shell 4 and the second shell 5 are restricted by the limiting component 2 to be fitted outside cell 1 in a first connected state, forming a protective shell structure for cell 1. In the first connected state, the first wire 6 and the second wire 7 are misaligned to avoid short-circuiting the positive and negative terminals of cell 1.

[0099] When used to replace two dry cell batteries connected in series, the first housing 4 and the second housing 5 are disconnected from the cell 1 and switched to the second connection state, so that the first wire 6 and the second wire 7 are connected to form a wire, which is installed in the two battery slots in the battery compartment along with the cell 1. Specifically, one pole of the cell 1 is electrically connected to one connection contact point of the battery compartment, the other pole of the cell 1 is electrically connected to one end of the spacer housing 3, and the other end of the spacer housing 3 is electrically connected to another connection contact point of the battery compartment, thereby adapting to the battery compartment structure and being able to output the working voltage equivalent to that of two dry cell batteries connected in series.

[0100] In some embodiments, the battery cell 1 is a sodium-ion battery cell 1, and the voltage range of a single sodium-ion battery cell 1 is between 3.0V and 3.2V, while the voltage range of two dry batteries connected in series is between 3V and 3.5V. When the battery cell 1 is connected to the first wire 6 and the second wire 7 to form a circuit to replace two dry batteries, the first wire 6 and the second wire 7 have a certain voltage division effect due to their own resistance. Therefore, the actual output voltage range of the battery cell 1 is less than 3.0V to 3.5V, and the device will not be damaged due to excessive voltage.

[0101] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A battery nest structure, characterized by, The utility model relates to a battery cell, including: an electric core (1) which is provided with a positive electrode at an axial top end and a negative electrode at an axial bottom end; a placeholder shell (3) including a first shell (4) and a second shell (5); the first shell (4) is detachably sleeved and connected to one end of the electric core (1) outside, and a first wire (6) is arranged in the first shell (4), the second shell (5) is detachably sleeved and connected to the other end of the electric core (1) outside relative to the first shell (4), and a second wire (7) is arranged in the second shell (5); wherein, a connecting end (8) is arranged on the first shell (4), and a connecting assembly (9) corresponding to the connecting end (8) is arranged on the second shell (5), so that the first shell (4) and the second shell (5) can be connected to each other away from the electric core (1); a limiting assembly (2) is arranged on the electric core (1) and located between the end faces connected by the first shell (4) and the second shell (5), when the first shell (4) and the second shell (5) are sleeved on the electric core (1), the first shell (4) and the second shell (5) form a unique first connection state through the limiting assembly (2), in the first connection state, the first wire (6) and the second wire (7) are staggered; when the first shell (4) and the second shell (5) are connected to each other away from the electric core (1), the first shell (4) and the second shell (5) also have a second connection state, in the second connection state, the first wire (6) and the second wire (7) are in contact and communication to transmit electric charge.

2. The battery nest structure of claim 1, wherein, The limiting assembly (2) includes a protruding block (201) fixed to the side wall of the electric core (1); a first embedding groove (403) matching the shape of one end of the protruding block (201) is arranged on the side wall of the first shell (4); a second embedding groove (503) matching the shape of the other end of the protruding block (201) is arranged on the side wall of the second shell (5).

3. The battery nest structure of claim 2, wherein, The connecting end (8) includes a first connecting groove (801) and a second connecting groove (802) arranged on the first shell (4), and the first connecting groove (801) and the second connecting groove (802) are the same in structure and are oppositely arranged; the connecting assembly (9) includes a first clamping tenon (901) and a second clamping tenon (902) connected to the second shell (5), and the first clamping tenon (901) and the second clamping tenon (902) are the same in structure and are opposite to each other; the first connection state is that the first connecting groove (801) and the first clamping tenon (901) are correspondingly connected, and the second connecting groove (802) and the second clamping tenon (902) are correspondingly connected; the second connection state is that the first connecting groove (801) and the second clamping tenon (902) are correspondingly connected, and the second connecting groove (802) and the first clamping tenon (901) are correspondingly connected.

4. The battery nest structure of claim 3, wherein, The first shell (4) is a first sleeve (401) with an opening at an axial top end, the first sleeve (401) is detachably sleeved at an axial bottom end of the battery cell (1), the first connecting slot (801) and the second connecting slot (802) are symmetrically arranged on two end side walls of the opening end of the first sleeve (401) in a radial direction; The second shell (5) is a second sleeve (501) with an opening at an axial bottom end, the second sleeve (501) is detachably connected to a top end of the battery cell (1), the first tenon (901) and the second tenon (902) are both connected to a bottom wall of the opening end of the second sleeve (501) and are oppositely arranged.

5. The battery nest structure of claim 4, wherein, The first lead wire (6) comprises a first terminal (601), the first terminal (601) is arranged on the bottom wall of the first sleeve (401); The first terminal (601) is connected with a first electrode sheet (602), the other end of the first electrode sheet (602) is arranged in the second connecting slot (802).

6. The battery nest structure of claim 5, wherein, The second lead wire (7) comprises a second terminal (701), the second terminal (701) is arranged on the bottom wall of the second sleeve (501); The second terminal (701) is connected with a second electrode sheet (702), the other end of the second electrode sheet (702) is arranged in the first tenon (901).

7. The battery nest structure of claim 3, wherein, The first shell (4) is a first half shell (402) with an opening in a radial direction, the first connecting slot (801) and the second connecting slot (802) are oppositely arranged on two end side walls of the opening of the first half shell (402) and are located in a middle part of the first half shell (402) in an axial direction; The second shell (5) is a second half shell (502) with an opening in a radial direction and oppositely arranged with the first half shell (402), the first tenon (901) and the second tenon (902) are oppositely arranged on two sides of the opening of the second half shell (502) and are located in a middle part of the second half shell (502) in an axial direction.

8. The battery nest structure of claim 7, wherein, The first lead wire (6) comprises a third terminal (603) and a fourth terminal (605) which are respectively arranged on two end side walls of the second half shell (502) in an axial direction; The third terminal (603) is connected with a third electrode sheet (604), the other end of the third electrode sheet (604) is arranged in the second connecting slot (802); The fourth terminal (605) is connected with a fourth electrode sheet (606), the other end of the fourth electrode sheet (606) is arranged in one end of the second connecting slot (802) which is opposite to the third electrode sheet (604); The third electrode sheet (604) and the fourth electrode sheet (606) are electrically isolated from each other.

9. The battery nest structure of claim 8, wherein, The second lead wire (7) comprises a fifth electrode sheet (703), the fifth electrode sheet (703) is arranged in the first tenon (901); In the second connecting state, the two ends of the fifth electrode sheet (703) are respectively connected with the third electrode sheet (604) and the fourth electrode sheet (606).

10. A rechargeable battery, characterized by The rechargeable battery comprises the battery nesting structure according to any one of claims 1-9.

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