A 1.5V rechargeable AA or AAA battery

Abstract

This application relates to a 1.5V rechargeable AA or AAA battery, belonging to the technical field of lithium batteries. The rechargeable AA or AAA battery includes a cell assembly with a positive electrode tab at the upper end and a negative electrode tab at the lower end; an electronic control assembly including a PCB board, which is spaced above the cell assembly, with its lower end face connected to the positive electrode tab; a metal casing, which is axially arranged vertically, with the cell assembly and PCB board disposed inside the metal casing, and the metal casing connected to the negative electrode tab; the upper end of the metal casing is bent inward to form a spin ring, which abuts against the upper end face of the PCB board; and an insulating outer film, which is fitted over the outside of the metal casing. This application optimizes the structure of the rechargeable battery, thereby reducing the number of parts, thus reducing the material cost of the rechargeable battery, and consequently reducing the production cost of the rechargeable battery.

Description

Technical Field

[0001] This application relates to the technical field of lithium batteries, and in particular to a 1.5V rechargeable AA or AAA battery. Background Technology

[0002] In the field of new energy technology, rechargeable battery technology has made significant progress in recent years. With continuous technological advancements, electronic devices are becoming increasingly widespread and powerful. As the energy source for these devices, the performance and quality of rechargeable batteries directly impact the user experience and battery life. In particular, 1.5V rechargeable batteries are widely used in many small electronic devices such as remote controls and flashlights, and their market demand continues to grow. Good rechargeable battery technology not only provides stable power support for electronic devices but also reduces the use of disposable batteries, lowering environmental pollution and possessing significant economic and environmental benefits.

[0003] Currently, common rechargeable batteries generally include a casing, a top cap, a battery body, and a PCB board. The battery body and the PCB board are located inside the casing, and the positive and negative terminals of the battery body are connected to the PCB board respectively. A charging / discharging unit is set on the PCB board, and the top cap is connected to the charging / discharging unit for charging / discharging the battery body.

[0004] Regarding the aforementioned technologies, existing rechargeable batteries essentially involve adding an outer casing with charging and discharging capabilities to the battery body through the cooperation of the outer casing and the PCB board. Therefore, existing rechargeable batteries consist of two independent parts: the outer casing and the battery body, which simplifies the assembly process. However, the need to add an extra outer casing increases the material cost of the rechargeable battery, thereby raising the overall production cost. Summary of the Invention

[0005] This application provides a 1.5V rechargeable AA or AAA battery, the purpose of which is to optimize the structure of the rechargeable battery, thereby reducing the production cost of the rechargeable battery.

[0006] The 1.5V rechargeable AA or AAA battery provided in this application adopts the following technical solution:

[0007] A 1.5V rechargeable AA or AAA battery includes a cell assembly with a positive electrode tab at the upper end and a negative electrode tab at the lower end; an electronic control assembly including a PCB board spaced above the cell assembly, the lower end of the PCB board being connected to the positive electrode tab; a metal casing axially arranged in a vertical direction, the cell assembly and the PCB board being disposed within the metal casing, the metal casing being connected to the negative electrode tab, the upper end of the metal casing being bent inward to form a spinning ring, the spinning ring abutting against the upper end of the PCB board; and an insulating outer film covering the outside of the metal casing.

[0008] By adopting the above technical solution, the metal casing serves as the outer shell for both the battery cell assembly and the electronic control assembly. Under the action of the spinning ring, the metal casing connects the negative electrode tab of the battery cell assembly to the PCB board of the electronic control assembly. Since the positive electrode tab is connected to the PCB board, the electronic control assembly is connected to the battery cell assembly, thereby enabling the control of the battery cell assembly's discharge and charging, and thus realizing the basic functions of a rechargeable battery. The insulating outer film protects the metal casing and prevents leakage from the rechargeable battery.

[0009] Based on this, since the metal casing serves as both the casing for the battery cell assembly and the electronic control assembly, and through the setting of the spinning ring, the metal casing acts as a conductor connecting the negative electrode tab of the battery cell assembly and the PCB board, the metal casing of this application can replace multiple parts, thereby reducing the number of internal parts of the rechargeable battery. Furthermore, the metal casing of this application essentially improves upon the casing of the battery cell assembly, allowing the casing of the battery cell assembly to simultaneously serve as the casing for the electronic control assembly and as a conductor. Therefore, the metal casing of this application can replace the functions of the casing of the battery cell body and the outer shell on the battery cell body in the prior art, thus the rechargeable battery of this application requires one less outer shell than rechargeable batteries in the prior art.

[0010] Therefore, by optimizing the structure of the rechargeable battery, this application can reduce the number of parts in the rechargeable battery, thereby reducing the material cost of the rechargeable battery and thus reducing the production cost of the rechargeable battery.

[0011] Optionally, the sidewall of the metal casing is recessed inward to form a concave ring, which is located between the PCB board and the battery cell assembly. The lower end face of the PCB board and the upper end face of the battery cell assembly both abut against the concave ring. The concave ring and the spinning ring are coaxially spaced apart, and the PCB board is located between the concave ring and the spinning ring.

[0012] By adopting the above technical solution, the concave ring on the metal casing divides the internal space of the metal casing. Since the PCB board and the battery cell assembly are spaced apart inside the metal casing, and the concave ring is located between the PCB board and the battery cell assembly, the concave ring can provide stable support for the PCB board and the battery cell assembly.

[0013] The space between the concave ring and the spinning ring enables the installation of the PCB board. Since the spinning ring abuts against the upper surface of the PCB board, it can press the upper surface of the PCB board tightly, thereby enabling the concave ring to provide stable support for the bottom of the PCB board and ensuring the stability of the PCB board installation.

[0014] The space between the concave ring and the bottom wall of the metal casing allows for the installation of the battery cell assembly. Since the concave ring abuts against the upper surface of the battery cell assembly, the stability of the battery cell assembly is improved.

[0015] Therefore, by directly machining a concave ring on the metal casing, the PCB board and cell assembly can be stably installed without the need for additional parts. This reduces the material cost of the rechargeable battery while ensuring its structural stability, thereby reducing the production cost of the rechargeable battery.

[0016] Optionally, a solder layer ring is provided on the upper surface of the PCB board, and the spinning ring abuts against the solder layer ring.

[0017] By adopting the above technical solution, because the tin ring material is relatively soft, the spinning ring can embed itself into the tin ring when it comes into contact with the tin ring, which improves the stability of the electrical connection between the metal casing and the PCB board. Furthermore, tin has good conductivity and solderability, which further improves the electrical connection performance. In addition, the tin ring also prevents the spinning ring from directly pressing on the PCB board, thus providing a buffering effect and reducing pressure damage to the PCB board caused by the spinning ring.

[0018] Optionally, the electronic control component further includes a positive electrode cap, which is located above the PCB board and connected to the upper surface of the PCB board. The positive electrode cap is located inside the spinning ring and is spaced apart from the spinning ring.

[0019] By adopting the above technical solution, since the positive electrode cap is located above the PCB board and connected to the upper surface of the PCB board, and the positive electrode cap and the spinning ring are spaced apart, the positive electrode cap can serve as a positive output terminal for the rechargeable battery, making it convenient for the rechargeable battery to connect to external devices.

[0020] Optionally, the positive electrode cap and the spinning ring are coaxially spaced apart, forming an isolation space between the positive electrode cap and the spinning ring; the electronic control assembly further includes positive and negative electrode isolation rings, which are coaxially sleeved on the outside of the positive electrode cap, and the positive and negative electrode isolation rings close the isolation space; the lower end face of the positive and negative electrode isolation rings abuts against the spinning ring, and the upper end face of the positive and negative electrode isolation rings abuts against the insulating outer film.

[0021] By adopting the above technical solution, the positive electrode cap and the spinning ring are spaced apart to form an isolation space, which makes it easy for dust and other debris to fall into the isolation space. This could lead to a short circuit between the positive electrode cap and the spinning ring due to the presence of dust and other debris. Therefore, the positive and negative electrode isolation rings seal the isolation space between the positive electrode cap and the spinning ring, thus preventing dust and other debris from entering the isolation space and avoiding a short circuit. In addition, under the action of the insulating outer film, the positive and negative electrode isolation rings are stably pressed against the spinning ring, which improves the stability of the contact between the spinning ring and the PCB board, thereby improving the stability of the electrical connection between the negative electrode tab of the battery cell assembly and the PCB board.

[0022] Optionally, the electronic control component further includes a plastic retaining ring, which is sleeved on the outside of the PCB board, and the metal housing is sleeved on the outside of the plastic retaining ring, with the plastic retaining ring and the metal housing being inserted into each other.

[0023] By adopting the above technical solution, the plastic retaining ring is sleeved on the outside of the PCB board and is inserted into the metal shell, so the plastic retaining ring can achieve stable installation of the PCB board; at the same time, the plastic retaining ring can also achieve electrical isolation between the PCB board and the metal shell to prevent short circuits; in addition, the plastic retaining ring can also seal the upper end of the metal shell to prevent electrolyte leakage from the rechargeable battery.

[0024] Optionally, a connecting aluminum cap is provided below the PCB board, the connecting aluminum cap is connected to the PCB board, and the positive electrode tab is connected to the connecting aluminum cap.

[0025] By adopting the above technical solution, the connecting aluminum cap is used to connect the PCB board and the positive electrode tab, ensuring the electrical connection stability between the positive electrode tab and the PCB board, so that the current on the cell assembly can be smoothly transmitted to the PCB board through the positive electrode tab and the connecting aluminum cap, ensuring the normal realization of the charging and discharging function of the rechargeable battery.

[0026] Optionally, the upper end of the plastic retaining ring is coaxially provided with a slot, and the PCB board and the connecting aluminum cap are both inserted into the slot, and the PCB board and the connecting aluminum cap are engaged with the slot.

[0027] By adopting the above technical solution, the slots opened on the plastic retaining ring engage with the PCB board and the connecting aluminum cap, enabling the PCB board and the connecting aluminum cap to be stably installed on the plastic retaining ring, ensuring the connection stability between the PCB board and the connecting aluminum cap, and thus ensuring the electrical connection stability between the positive electrode tab and the PCB board.

[0028] Meanwhile, the electronic control component, through its structural design that connects the aluminum cap, positive electrode cap, and PCB board, can be produced as an independent component. After the metal casing and battery cell assembly are completed, the finished electronic control component can be directly installed into the metal casing, allowing the production and assembly of the metal casing and battery cell assembly to be carried out simultaneously with the production of the electronic control component, thus improving battery production efficiency.

[0029] Optionally, a positive electrode contact ring is sleeved on the outside of the connecting aluminum cap, and the positive electrode contact ring is fixedly connected to the connecting aluminum cap; the positive electrode contact ring is inserted into the slot, the upper end face of the positive electrode contact ring abuts against the lower end face of the PCB board, and the lower end face of the positive electrode contact ring abuts against the bottom of the slot.

[0030] By adopting the above technical solution, the positive electrode contact ring is fixedly connected to the connecting aluminum cap, and the positive electrode contact ring is inserted into the slot. The upper end face of the positive electrode contact ring abuts against the lower end face of the PCB board, and the lower end face of the positive electrode contact ring abuts against the bottom of the slot. This allows the PCB board and the connecting aluminum cap to be connected by contact, which facilitates the assembly of the PCB board and the connecting aluminum cap, and also facilitates the production and assembly of the electronic control components, thereby improving the production efficiency of the electronic control components.

[0031] Optionally, the battery cell assembly includes a wound battery cell, a positive electrode separator, and a negative electrode separator. The metal casing is coaxially sleeved on the outside of the wound battery cell. The positive electrode separator is disposed at the upper end of the wound battery cell, and the negative electrode separator is disposed at the lower end of the wound battery cell. The positive electrode tab is disposed on the positive electrode separator, and the negative electrode tab is disposed on the negative electrode separator.

[0032] By adopting the above technical solution, the wound cell, positive electrode separator, negative electrode separator, negative electrode tab, positive electrode tab, and metal casing constitute the battery body of the rechargeable battery. Filling the wound cell with electrolyte enables the battery body to function. Furthermore, the metal casing also serves as the negative electrode of the cell assembly, thanks to the negative electrode tab. Simultaneously, the metal casing is coaxially sleeved on the outside of the wound cell, with the positive electrode separator located at the upper end and the negative electrode separator at the lower end. This layout ensures the structural stability of the cell assembly, guaranteeing the stable and reliable performance of the rechargeable battery.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. This application optimizes the structure of the rechargeable battery, thereby reducing the number of parts in the rechargeable battery, thus reducing the material cost of the rechargeable battery and consequently reducing the production cost of the rechargeable battery.

[0035] 2. The spin ring and concave ring on the metal casing of this application enable the metal casing to stably fix the cell assembly and electronic control assembly without additional parts. This can reduce the material cost of the rechargeable battery while ensuring the structural stability of the rechargeable battery, thereby reducing the production cost of the rechargeable battery.

[0036] 3. The tin layer ring on the PCB board of this application can improve the stability of the electrical connection between the metal casing and the PCB board, and can also reduce the pressure damage to the PCB board caused by the spinning ring. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the rechargeable AA or AAA battery of Embodiment 1 of this application.

[0038] Figure 2 This is a cross-sectional view of the rechargeable AA or AAA battery according to Embodiment 1 of this application.

[0039] Figure 3 This is a partial cross-sectional view of the rechargeable AA or AAA battery of Embodiment 1 of this application.

[0040] Figure 4 This is a schematic diagram of the overall structure of the battery cell assembly according to Embodiment 1 of this application.

[0041] Figure 5 This is a cross-sectional structural diagram of the electronic control component of Embodiment 1 of this application.

[0042] Figure 6 This is a partial cross-sectional view of the rechargeable AA or AAA battery according to Embodiment 2 of this application.

[0043] Figure 7 This is a partial cross-sectional view of the rechargeable AA or AAA battery of Embodiment 3 of this application.

[0044] In the diagram, 1. Battery cell assembly; 11. Positive electrode tab; 12. Negative electrode tab; 13. Winded battery cell; 14. Positive electrode separator; 15. Negative electrode separator; 16. Battery cell seal; 161. Plastic ring; 162. Conductive circular plate; 163. Conductive spring; 2. Electronic control assembly; 21. PCB board; 211. Positive electrode copper ring; 212. Negative electrode copper ring; 213. Positive electrode pad; 214. Solder ring; 215. Isolation space; 22. Positive electrode cap; 221. Positive electrode connector. 23. Connecting aluminum cap; 231. Positive electrode contact ring; 232. Fixing screw; 24. Plastic fixing ring; 241. Slot; 242. Snap ring; 25. Positive and negative electrode isolation ring; 3. Metal shell; 31. Spinning ring; 32. Concave ring; 321. First short tube; 322. Second short tube; 323. Internally threaded tube; 324. Externally threaded tube; 34. First housing; 35. Second housing; 4. Insulating outer film; 100. Battery cell module; 200. Electronic control module. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail below.

[0046] Example 1: A 1.5V rechargeable AA or AAA battery, refer to Figure 1 and Figure 2 It includes a battery cell assembly 1, an electronic control assembly 2, a metal casing 3, and an insulating outer film 4. The metal casing 3 is tubular and vertically arranged. Both the battery cell assembly 1 and the electronic control assembly 2 are located inside the metal casing 3, with the electronic control assembly 2 located above the battery cell assembly 1. The insulating outer film 4 is fitted on the outside of the metal casing 3.

[0047] Reference Figure 2 and Figure 3 The battery cell assembly 1 is coaxially inserted into the metal casing 3. A positive electrode tab 11 is located at the upper end of the battery cell assembly 1, and a negative electrode tab 12 is located at the lower end. The metal casing 3 is connected to the negative electrode tab 12. The control assembly 2 is coaxially inserted into the metal casing 3, and is spaced above the battery cell assembly 1. The lower end of the control assembly 2 is connected to the positive electrode tab 11. The upper end of the metal casing 3 is bent inward to form a spinning ring 31, which abuts against the upper end surface of the control assembly 2.

[0048] Based on the cooperation of the cell assembly 1 and the electronic control assembly 2, the cell assembly 1 can discharge to the outside, and at the same time, the electronic control assembly 2 can charge the cell assembly 1, which can meet the basic functions of a rechargeable battery.

[0049] Reference Figure 2 and Figure 3Furthermore, since the metal casing 3 serves as the casing of the cell assembly 1, and also as the casing of the electronic control assembly 2, and further as a conductor connecting the negative electrode tab 12 and the electronic control assembly 2, the metal casing 3 can replace multiple components. Moreover, compared to existing technologies, the rechargeable battery of this application has one less outer casing. Therefore, the structural design of the rechargeable battery of this application can reduce the component costs of the rechargeable battery, thereby reducing the production cost of the rechargeable battery.

[0050] Reference Figure 2 and Figure 3 In this embodiment, the outer wall of the metal shell 3 is recessed towards the central axis, thereby forming a concave ring 32 inside the metal shell 3. The concave ring 32 is located between the electronic control component 2 and the battery cell component 1 along the axial direction of the metal shell 3, and the concave ring 32 and the spinning ring 31 are coaxially spaced apart. The electronic control component 2 is located between the concave ring 32 and the spinning ring 31. The upper side of the concave ring 32 abuts against the electronic control component 2, and the lower side abuts against the battery cell component 1.

[0051] Based on the concave ring 32, the internal space of the metal casing 3 can be separated, thereby separating the battery cell assembly 1 and the electronic control assembly 2, while improving the stability of the installation of the battery cell assembly 1 and the electronic control assembly 2 inside the metal casing 3.

[0052] In this embodiment, both the spun ring 31 and the concave ring 32 are formed by spinning the metal shell 3. Therefore, the formation of the spun ring 31 and the concave ring 32 does not require additional parts, which can reduce the material cost of the rechargeable battery.

[0053] Reference Figure 4 The battery cell assembly 1 includes a wound battery cell 13, a positive electrode separator 14, and a negative electrode separator 15. The wound battery cell 13 is formed by winding several layers of separators and is cylindrical. The positive electrode separator 14 is disposed at the upper end of the wound battery cell 13, and one end of the positive electrode tab 11 extends into the wound battery cell 13, while the other end protrudes from the central hole on the positive electrode separator 14. The negative electrode separator 15 is disposed at the lower end of the wound battery cell 13, and one end of the negative electrode tab 12 is connected to the negative electrode separator 15, while the other end extends to the outside of the wound battery cell 13.

[0054] Reference Figure 2 and Figure 4 The negative electrode tab 12 is welded to the bottom wall of the metal casing 3. In this embodiment, both the positive electrode tab 11 and the negative electrode tab 12 are made of long strip-shaped flexible conductive material.

[0055] The wound cell 13, positive electrode separator 14, negative electrode separator 15, negative electrode tab 12, positive electrode tab 11, and metal casing 3 constitute the battery body of the rechargeable battery. Filling the wound cell 13 with electrolyte enables the battery body to function. Furthermore, due to the negative electrode tab 12, the metal casing 3 also serves as the negative electrode of the cell assembly 1.

[0056] Reference Figure 2 and Figure 4 In this embodiment, the battery cell assembly 1 is coaxially inserted into the metal casing 3. The wound battery cell 13, the positive electrode separator 14, and the negative electrode separator 15 are all coaxially inserted into the metal casing 3, and the lower side of the concave ring 32 abuts against the upper surface of the positive electrode separator 14. Thus, after the battery cell assembly 1 is installed into the metal casing 3, the concave ring 32 is machined into the metal casing 3, which fixes the position of the battery cell assembly 1 and ensures the stability of the battery cell assembly 1 installation.

[0057] Reference Figure 3 and Figure 5 The electronic control component 2 includes a PCB board 21 and a plastic retaining ring 24. The plastic retaining ring 24 is sleeved on the outside of the PCB board 21 and is coaxially inserted into the metal housing 3. The upper end face of the plastic retaining ring 24 abuts against the spinning ring 31 and the lower end face abuts against the concave ring 32.

[0058] Thus, the plastic retaining ring 24 ensures stable installation of the PCB board 21 and provides electrical isolation between the PCB board 21 and the metal casing 3, preventing short circuits. Simultaneously, the plastic retaining ring 24 also seals the upper part of the metal casing 3.

[0059] Reference Figure 3 and Figure 5 The PCB board 21 is coaxially disposed inside the metal housing 3. A positive copper ring 211 and a negative copper ring 212 are coaxially disposed on the upper end face of the PCB board 21, and the positive copper ring 211 is located inside the negative copper ring 212. The inner side wall of the negative copper ring 212 is spaced apart from the outer side wall of the positive copper ring 211. A positive solder pad 213 is disposed on the lower end face of the PCB board 21.

[0060] Reference Figure 3 and Figure 5 The electronic control assembly 2 also includes a positive electrode cap 22 and a connecting aluminum cap 23. The positive electrode cap 22 is located above the PCB board 21 and is coaxially welded to the positive electrode copper ring 211. The spinning ring 31 abuts against the negative electrode copper ring 212 and is spaced apart from the positive electrode cap 22. The connecting aluminum cap 23 is located below the PCB board 21 and is coaxially arranged with the PCB board 21. The connecting aluminum cap 23 is connected to the positive electrode pad 213, and the positive electrode tab 11 is welded to the lower end face of the connecting aluminum cap 23.

[0061] In this embodiment, the electrical components on the PCB board 21 are all located inside the positive electrode cap 22 and the connecting aluminum cap 23.

[0062] Reference Figure 3 and Figure 5 Therefore, the specific connection principle of the internal circuit of the rechargeable battery in this application is as follows: the positive electrode tab 11 on the cell assembly 1 is connected to the PCB board 21 in sequence through the connecting aluminum cap 23 and the positive electrode pad 213; the negative electrode tab 12 of the cell assembly 1 is connected to the PCB board 21 through the metal shell 3, the spinning ring 31, and the negative electrode copper ring 212. Therefore, under the action of the electronic control component 2, the electronic control component 2 can regulate the voltage of the output current of the cell assembly 1, and can also control the current input to the cell assembly 1, thereby realizing the charging and discharging function of the rechargeable battery.

[0063] Reference Figure 3 and Figure 5 In this embodiment, the upper surface of the negative electrode copper ring 212 is covered with a tin layer, thereby forming a tin layer ring 214 on the negative electrode copper ring 212, and the spinning ring 31 abuts against the tin layer ring 214.

[0064] Because the tin ring 214 is relatively soft, when the spinning ring 31 contacts the tin ring 214, the inner side of the spinning ring 31 can embed into the tin ring 214, which improves the stability of the electrical connection between the metal casing 3 and the PCB board 21. Furthermore, since tin has good conductivity and soldering properties, this further improves the electrical connection performance between the spinning ring 31 and the PCB board 21. In addition, the tin ring 214 can also act as a buffer, reducing pressure damage to the PCB board 21 caused by the spinning ring 31.

[0065] Reference Figure 3 In this embodiment, positive and negative electrode isolation rings 25 are spaced apart on the upper surface of the PCB board 21. The positive and negative electrode isolation rings 25 are coaxially sleeved on the outside of the positive electrode cap 22, and the inner sidewall of the positive and negative electrode isolation rings 25 is spaced apart from the outer sidewall of the positive electrode cap 22. The lower end face of the positive and negative electrode isolation rings 25 abuts against the spinning ring 31, and the upper end face of the positive and negative electrode isolation rings 25 abuts against the insulating outer film 4.

[0066] Reference Figure 3 and Figure 5 In this embodiment, a positive electrode connecting ring 221 is coaxially disposed on the outer side of the positive electrode cap 22. The positive electrode connecting ring 221 is fixedly connected to the positive electrode cap 22, and is located at the lower end of the positive electrode cap 22. The positive electrode connecting ring 221 is welded to the positive electrode copper ring 211. Furthermore, the outer wall of the positive electrode connecting ring 221 and the inner wall of the negative electrode copper ring 212 form an isolation space 215, which is closed by the positive and negative electrode isolation rings 25.

[0067] The positive and negative electrode isolation rings 25 prevent dust and other debris from entering the isolation space 215 between the spinning ring 31 and the positive electrode cap 22, thereby avoiding a short circuit between the positive electrode copper ring 211 and the negative electrode copper ring 212 on the PCB board 21. In addition, with the help of the insulating outer film 4, the positive and negative electrode isolation rings 25 can also increase the stability of the contact between the spinning ring 31 and the negative electrode copper ring 212.

[0068] Reference Figure 3 and Figure 5 In this embodiment, a slot 241 is coaxially formed on the upper surface of the plastic retaining ring 24. The PCB board 21 and the connecting aluminum cap 23 are coaxially inserted into the slot 241, and the bottom of the slot 241 abuts against the connecting aluminum cap 23. A retaining ring 242 is provided on the inner side wall of the slot 241. The retaining ring 242 is coaxially arranged with the slot 241, and the outer side wall of the retaining ring 242 is fixedly connected to the inner side wall of the slot 241. The upper surface of the retaining ring 242 is flush with the upper surface of the plastic retaining ring 24, the lower surface of the retaining ring 242 is spaced apart from the bottom of the slot 241, the lower surface of the retaining ring 242 abuts against the upper surface of the PCB board 21, and the inner side wall of the retaining ring 242 is spaced apart from the outer side wall of the negative copper ring 212.

[0069] The cooperative arrangement of the slot 241 and the retaining ring 242 allows the PCB board 21 and the connecting aluminum cap 23 to be stably mounted onto the plastic retaining ring 24. Furthermore, the contact between the PCB board 21 and the connecting aluminum cap 23 ensures the connection stability between the positive electrode pad 213 and the connecting aluminum cap 23, thereby guaranteeing the electrical connection stability between the positive electrode tab 11 and the PCB board 21. Simultaneously, the structure of the plastic retaining ring 24 allows the electronic control component 2 to be manufactured as an independent part. After the metal casing 3 and the cell assembly 1 are assembled, the finished electronic control component 2 is directly installed into the metal casing 3. This allows the production and assembly of the metal casing 3 and the cell assembly 1 to be carried out simultaneously with the production of the electronic control component 2, thereby improving battery production efficiency.

[0070] Reference Figure 3 and Figure 5 In this embodiment, a positive electrode contact ring 231 is coaxially sleeved on the outside of the connecting aluminum cap 23. The positive electrode contact ring 231 is fixedly connected to the connecting aluminum cap 23. The positive electrode contact ring 231 is located at the upper end of the connecting aluminum cap 23. The connecting aluminum cap 23 is coaxially inserted with the plastic fixing ring 24. The positive electrode contact ring 231 is coaxially inserted with the slot 241. The upper end face of the positive electrode contact ring 231 abuts against the positive electrode pad 213, and the lower end face abuts against the bottom of the slot 241.

[0071] Thus, the setting of the positive electrode contact ring 231 realizes the connection between the aluminum cap 23 and the PCB board 21, and at the same time realizes the connection between the aluminum cap 23 and the plastic fixing ring 24.

[0072] The implementation principle of this embodiment is as follows: when charging or discharging a rechargeable battery, current flows through the electronic control component 2, and the electronic control component 2 adjusts the current to the corresponding voltage level, thereby achieving constant voltage discharge or charging.

[0073] Because the rechargeable battery of this application uses a metal casing 3 as the casing of the cell assembly 1, and also as the casing of the electronic control assembly 2, and further as a conductor connecting the cell assembly 1 and the electronic control assembly 2, and because the metal casing 3 has a concave ring 32 machined on itself to achieve stable installation of the electronic control assembly 2 and the cell assembly 1, the rechargeable battery of this application can achieve multiple functions through a single-layer metal casing 3, thereby replacing multiple components in the rechargeable battery of the prior art, reducing the number of components in the rechargeable battery, reducing the component cost of the battery, and thus reducing the production cost of the battery.

[0074] Example 2: A 1.5V rechargeable AA or AAA battery, refer to Figure 6 The difference between this embodiment and embodiment 1 is that one end of the positive electrode tab 11 is rotatably connected to the connecting aluminum cap 23, and the positive electrode tab 11 and the connecting aluminum cap 23 are detachably connected.

[0075] Reference Figure 6 In this embodiment, a fixing screw 232 is screwed to the lower end of the connecting aluminum cap 23. The fixing screw 232 passes through the positive electrode tab 11, and the positive electrode tab 11 is in contact with the lower end face of the connecting aluminum cap 23. The positive electrode tab 11 is rotatably connected to the fixing screw 232.

[0076] Reference Figure 6 The metal casing 3 includes a first casing 34 and a second casing 35. The first casing 34 is vertically arranged and the first casing 34 and the second casing 35 are coaxially spaced apart. The electronic control component 2 is coaxially arranged inside the first casing 34 and the battery cell component 1 is coaxially arranged inside the second casing 35.

[0077] Reference Figure 6 A first short tube 321 is coaxially disposed at the lower end of the first housing 34, and the first short tube 321 is fixedly connected to the first housing 34 and integrally formed; a second short tube 322 is coaxially disposed at the upper end of the second housing 35, and the second short tube 322 is coaxially fixedly connected to the second housing 35 and integrally formed. The first short tube 321 and the second short tube 322 are coaxially and detachably connected, and the connection between the first short tube 321 and the second short tube 322 forms the concave ring 32 in Embodiment 1.

[0078] Reference Figure 6In this embodiment, the electronic control component 2, the first housing 34 and the first short tube 321 constitute the electronic control module 200, and the battery cell component 1, the second housing 35 and the second short tube 322 constitute the battery cell module 100. This makes the electronic control module 200 and the battery cell module 100 form a complete rechargeable battery after assembly.

[0079] Reference Figure 6 In this embodiment, the processing method of the first short tube 321 and the second short tube 322 is the same as that of the concave ring 32 in embodiment 1, and both are spin forming.

[0080] Based on the structural design of the metal casing 3, the control module 200 and the cell module 100 can be manufactured independently. Then, the control module 200 and the cell module 100 are assembled and wrapped with an insulating outer film 4, thus producing a complete rechargeable battery. Since the production of the control module 200 and the cell module 100 can be carried out simultaneously, the production time of the rechargeable battery can be shortened, and the production efficiency can be improved. Simultaneously, during the rechargeable battery testing process, when a defective rechargeable battery is detected, the faulty control module 200 or cell module 100 can be removed, while the normal cell module 100 or control module 200 can be retained and recycled. Therefore, in the mass production of rechargeable batteries, recycling the normal control module 200 or cell module 100 from defective rechargeable batteries can effectively reduce material waste and lower production costs.

[0081] Reference Figure 6 In this embodiment, an internally threaded tube 323 is coaxially sleeved on the outside of the first short tube 321, and an externally threaded tube 324 is coaxially sleeved on the outside of the second short tube 322. The internally threaded tube 323 is coaxially sleeved on the outside of the externally threaded tube 324, and the internally threaded tube 323 and the externally threaded tube 324 are connected by threads.

[0082] Reference Figure 6 In this embodiment, the first short pipe 321 is detachably connected to the internally threaded pipe 323, and the second short pipe 322 is detachably connected to the externally threaded pipe 324. Specifically, the first short pipe 321 and the internally threaded pipe 323, as well as the second short pipe 322 and the externally threaded pipe 324, are bonded or snapped together with adhesive.

[0083] The implementation principle of this embodiment is as follows: When assembling a rechargeable battery, the first housing 34 and the electronic control component 2 can be pre-assembled into an electronic control module 200, while the second housing 35 and the cell component 1 are assembled into a cell module 100. Through the threaded connection between the first short tube 321 and the second short tube 322, the electronic control module 200 and the cell module 100 can be quickly assembled, thereby significantly shortening the production assembly time of the rechargeable battery. This modular design allows the production lines of the cell module 100 and the electronic control module 200 to operate in parallel, improving overall production efficiency and thus reducing the unit time and labor costs of rechargeable battery production.

[0084] In the rechargeable battery manufacturing process, during the post-production testing phase, if a rechargeable battery is found to be defective due to a malfunction in a single control module 200 or cell module 100, the faulty control module 200 or cell module 100 can be removed, while the functional control module 200 or cell module 100 can be retained and recycled. This design avoids the problem of a partial fault causing the entire rechargeable battery to be scrapped. In mass production of rechargeable batteries, this design can significantly reduce raw material waste.

[0085] Furthermore, both the first short tube 321 and the second short tube 322 are formed by partial spinning, which reduces the requirements for the axial machining accuracy of the metal shell 3 compared to the integral machining of the concave ring 32 on the metal shell 3 in Embodiment 1, and reduces material loss in the spinning process. Moreover, since the electronic control module 200 and the battery module 100 are separately pressure-bearing components, the first shell 34 and the second shell 35 can use thinner-walled metal materials, further reducing the raw material cost of the shell.

[0086] Example 3: A 1.5V rechargeable AA or AAA battery, refer to Figure 7 The difference between this embodiment and embodiment 2 is that a battery cell seal 16 is provided inside the second short tube 322.

[0087] Reference Figure 7 The battery cell sealing component 16 includes a plastic ring 161, a conductive circular plate 162, and a conductive spring 163. The axial direction of the conductive circular plate 162 is vertical. The plastic ring 161 is coaxially sleeved on the outer side of the conductive circular plate 162, and the inner sidewall of the plastic ring 161 is fixedly connected to the outer sidewall of the conductive circular plate 162. The conductive spring 163 is coaxially arranged with the conductive circular plate 162, and the conductive spring 163 is located above the conductive circular plate 162. The lower end of the conductive spring 163 is connected to the upper end face of the conductive circular plate 162.

[0088] Reference Figure 7In this embodiment, the plastic ring 161 is located inside the second short tube 322, and the plastic ring 161 is coaxially inserted into the second short tube 322, and the plastic ring 161 seals the second short tube 322. The positive electrode tab 11 is located inside the plastic ring 161, and the lower end of the conductive circular plate 162 is welded to the positive electrode tab 11.

[0089] Reference Figure 7 In this embodiment, after the first housing 34 and the corresponding second housing 35 are installed, the upper end of the conductive spring 163 abuts against the connecting aluminum cap 23.

[0090] The implementation principle of this embodiment is as follows: During the rechargeable battery assembly process, when the cell module 100 and the electronic control module 200 are connected, the conductive spring 163 is compressed by the connecting aluminum cap 23 and undergoes elastic deformation, automatically adapting to the axial assembly tolerance between the cell module 100 and the electronic control module 200, thus eliminating the need to rely on precision machining to control the height of the cell assembly 1. This design reduces the precision requirements of the rechargeable battery production equipment, reduces the dimensional calibration requirements and maintenance costs during the rechargeable battery production process, and also reduces the yield loss caused by dimensional deviations in rechargeable batteries, reduces material waste, and thereby reduces production costs.

[0091] Furthermore, based on the design of the cell seal 16 in the cell module 100, the cell seal 16 can prevent the electrolyte in the cell assembly 1 from entering the electronic control module 200. This isolates the electronic control module 200 from the influence of the electrolyte, improves its service life and reduces the possibility of damage, thereby reducing the after-sales cost of the rechargeable battery. Simultaneously, during rechargeable battery recycling, it can increase the pass rate of the recycled electronic control modules 200, enabling more electronic control modules 200 to be recycled and reused, thus reducing the production cost of the rechargeable battery.

[0092] In addition, when disassembling and assembling the rechargeable battery, the cell seal 16 can prevent electrolyte leakage inside the cell module 100, which reduces the difficulty of disassembling and assembling the cell module 100 and the electronic control module 200, while reducing the impact on the quality of the rechargeable battery and reducing the recycling cost of the rechargeable battery.

[0093] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A 1.5V rechargeable AA or AAA battery, characterized in that, include: A battery cell assembly (1) is provided with a positive electrode tab (11) at the upper end and a negative electrode tab (12) at the lower end. The electronic control assembly (2) includes a PCB board (21), which is spaced above the battery cell assembly (1). A connecting aluminum cap (23) is provided below the PCB board (21), and the connecting aluminum cap (23) is connected to the PCB board (21). A metal casing (3) is arranged axially in the vertical direction. The battery cell assembly (1) and the PCB board (21) are arranged inside the metal casing (3). The metal casing (3) is connected to the negative electrode tab (12). The upper end of the metal casing (3) is bent inward to form a spinning ring (31). The spinning ring (31) abuts against the upper surface of the PCB board (21). The metal casing (3) includes a first casing (34) and a second casing (35). The first casing (34) is vertically arranged. The electronic control component (2) is coaxially arranged inside the first casing (34). The battery cell component (1) is coaxially arranged inside the second casing (35). A first short tube (321) is coaxially arranged at the lower end of the first casing (34). A second short tube (322) is coaxially arranged at the upper end of the second casing (35). The first short tube (321) and the second short tube (322) are coaxially and detachably connected. The first short tube (321) and the second short tube (322) are connected to form a concave ring (32). The concave ring (32) is located between the PCB board (21) and the battery cell assembly (1). The concave ring (32) and the spinning ring (31) are coaxially spaced. The PCB board (21) is located between the concave ring (32) and the spinning ring (31). The second short tube (322) is provided with a battery cell seal (16), which includes a plastic ring (161), a conductive disc (162), and a conductive spring (163). The plastic ring (161) is coaxially inserted with the second short tube (322) and seals the second short tube (322). The axial direction of the conductive disc (162) is arranged in the vertical direction. The plastic ring (161) is coaxially sleeved on the outside of the conductive disc (162) and fixedly connected. The positive electrode tab (11) is located inside the plastic ring (161). The lower end of the conductive disc (162) is welded to the positive electrode tab (11). The conductive spring (163) is located above the conductive disc (162). The lower end of the conductive spring (163) is connected to the upper end face of the conductive disc (162). The upper end of the conductive spring (163) abuts against the connecting aluminum cap (23). An insulating outer film (4) is fitted over the outside of the metal outer shell (3).

2. A 1.5V rechargeable AA or AAA battery according to claim 1, characterized in that, A tin layer ring (214) is provided on the upper surface of the PCB board (21), and the spinning ring (31) abuts against the tin layer ring (214).

3. A 1.5V rechargeable AA or AAA battery according to claim 1, characterized in that, The electronic control component (2) also includes a positive electrode cap (22), which is located above the PCB board (21) and is connected to the upper surface of the PCB board (21). The positive electrode cap (22) is spaced apart from the spinning ring (31).

4. A 1.5V rechargeable AA or AAA battery according to claim 3, characterized in that, The positive electrode cap (22) and the spinning ring (31) are coaxially spaced apart, and an isolation space (215) is formed between the positive electrode cap (22) and the spinning ring (31). The electronic control component (2) also includes a positive and negative electrode isolation ring (25), which is coaxially sleeved on the outside of the positive electrode cap (22) and closes the isolation space (215). The lower end face of the positive and negative electrode isolation ring (25) abuts against the spinning ring (31), and the upper end face of the positive and negative electrode isolation ring (25) abuts against the insulating outer film (4).

5. A 1.5V rechargeable AA or AAA battery according to claim 3, characterized in that, The electronic control component (2) also includes a plastic retaining ring (24), which is sleeved on the outside of the PCB board (21), and the metal shell (3) is sleeved on the outside of the plastic retaining ring (24). The plastic retaining ring (24) and the metal shell (3) are inserted into each other.

6. A 1.5V rechargeable AA or AAA battery according to claim 5, characterized in that, The upper end of the plastic retaining ring (24) is coaxially provided with a slot (241). The PCB board (21) and the connecting aluminum cap (23) are both inserted into the slot (241). The PCB board (21) and the connecting aluminum cap (23) are both engaged with the slot (241).

7. A 1.5V rechargeable AA or AAA battery according to claim 6, characterized in that, A positive electrode contact ring (231) is sleeved on the outside of the connecting aluminum cap (23), and the positive electrode contact ring (231) is fixedly connected to the connecting aluminum cap (23); The positive electrode contact ring (231) is inserted into the slot (241), the upper end face of the positive electrode contact ring (231) abuts against the lower end face of the PCB board (21), and the lower end face of the positive electrode contact ring (231) abuts against the bottom of the slot (241).

8. A 1.5V rechargeable AA or AAA battery according to claim 1, characterized in that, The battery cell assembly (1) includes a wound battery cell (13), a positive electrode isolation plate (14) and a negative electrode isolation plate (15). The metal shell (3) is coaxially sleeved on the outside of the wound battery cell (13). The positive electrode isolation plate (14) is disposed at the upper end of the wound battery cell (13), and the negative electrode isolation plate (15) is disposed at the lower end of the wound battery cell (13). The positive electrode tab (11) is disposed on the positive electrode isolation plate (14), and the negative electrode tab (12) is disposed on the negative electrode isolation plate (15).

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