rechargeable batteries

Abstract

The present invention discloses a rechargeable battery, comprising: a lithium battery, which includes a shell, a winding core, a first circuit board, a protective cover and a positive electrode body, the first circuit board has a component side and a polarity side arranged oppositely, the shell has a receiving groove, and the component side faces the winding core. A charging sleeve, which includes a sleeve body, the sleeve body has a mounting groove, a charging port and a second circuit board. When the lithium battery needs to be charged, one end of the lithium battery is inserted into the mounting groove, the positive electrode member is connected to the positive electrode body of the lithium battery, the negative electrode member is connected to the shell of the lithium battery, an external power supply is inserted into the charging port, and the second circuit board, the positive electrode member, the negative electrode member, the positive electrode body and the first circuit board cooperate to charge the lithium battery; after charging is completed, the lithium battery can be taken out from the mounting groove. In this way, the demand for charging the lithium battery is met without increasing the volume of the lithium battery, and the problem that the lithium battery cannot have a charging port due to insufficient space is solved. It is suitable for most lithium batteries.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage products, and in particular to a rechargeable battery. Background Art

[0002] To reduce the cost of using batteries, rechargeable batteries were invented. Earlier, charging required an additional charging station, which was inconvenient. To facilitate battery charging, the Type-C charging port, which is the same as the mobile phone interface, is now a popular method. Consumers only need to use the mobile phone charging cable to charge the battery. Although this method makes charging more convenient, it requires the battery's own space to set up a charging port, which not only increases the battery's size, but also makes it difficult to make room for an additional charging port for batteries with limited space. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a rechargeable battery.

[0004] The present invention discloses a rechargeable battery, comprising:

[0005] A lithium battery comprising a housing, a winding core, a first circuit board, a protective cover, and a positive electrode body, wherein the first circuit board has an element side and a polarity side disposed opposite each other, the housing having a receiving slot, the winding core disposed in the receiving slot, the first circuit board disposed in a notch of the receiving slot with the element side facing the winding core, the protective cover disposed on the element side, and the positive electrode body disposed on the polarity side;

[0006] The negative end of the winding core is conductively connected to the polarity side through the shell, and the positive end of the winding core is conductively connected to the positive electrode body through the protective cover;

[0007] A charging sleeve, comprising a sleeve body having a mounting groove, a charging port, and a second circuit board, wherein the second circuit board is disposed in the charging port and has a positive electrode member and a negative electrode member, wherein the positive electrode member and the negative electrode member both extend into the mounting groove;

[0008] Charging state: The shell can be removably arranged in the installation groove, the positive electrode body contacts and conducts with the positive electrode member, the shell contacts and conducts with the negative electrode member, and the external power supply charges the lithium battery through the second circuit board.

[0009] According to one embodiment of the present invention, the lithium battery further includes a first sealing body, which is disposed between the protective cover and the wall surface of the receiving groove.

[0010] According to one embodiment of the present invention, the lithium battery further includes a protection body, which is disposed between the protection cover and the component side.

[0011] According to one embodiment of the present invention, the lithium battery further includes an explosion-proof body, the protective cover is provided with an exhaust hole, and the explosion-proof body is respectively connected to the wall surface of the exhaust hole and the positive terminal of the winding core.

[0012] According to one embodiment of the present invention, the lithium battery further includes a second sealing body, which is located between the explosion-proof body and the protective cover. One end of the explosion-proof body passes through the second sealing body and is connected to the wall of the exhaust hole.

[0013] According to one embodiment of the present invention, the sleeve further has a positive electrode channel and a negative electrode channel distributed at intervals, both the positive electrode channel and the negative electrode channel are connected to the mounting groove and the charging port, the positive electrode member is located in the positive electrode channel, and the negative electrode member is located in the negative electrode channel.

[0014] According to one embodiment of the present invention, the sleeve further has a clamping groove, the clamping groove is communicated with the mounting groove, and the positive electrode member extends to the clamping groove or the mounting groove.

[0015] According to one embodiment of the present invention, a clamping slope is provided at one end of the clamping groove close to the mounting groove.

[0016] According to one embodiment of the present invention, the sleeve further comprises a magnetic component, the magnetic component is clamped in the clamping groove, and the positive electrode component is conductively connected to the magnetic component.

[0017] According to one embodiment of the present invention, a buffer is provided on the inner wall surface of the installation groove.

[0018] The beneficial effects of the present invention are as follows: when the lithium battery needs to be charged, one end of the lithium battery is inserted into the mounting slot, the positive electrode member is connected to the positive electrode body of the lithium battery, the negative electrode member is connected to the housing of the lithium battery, an external power supply is plugged into the charging port, and the lithium battery is charged through the cooperation of the second circuit board, the positive electrode member, the negative electrode member, the positive electrode body, and the first circuit board; after charging is completed, the lithium battery can be removed from the mounting slot. This not only meets the charging requirements of the lithium battery but also does not increase the size of the lithium battery, solving the problem of not being able to provide a charging port for the lithium battery due to insufficient space, but is also applicable to most lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 Schematic diagram of the three-dimensional structure of a rechargeable battery;

[0021] Figure 2 This is a disassembled state diagram of a rechargeable battery;

[0022] Figure 3 is a cross-sectional schematic diagram of a rechargeable battery;

[0023] Figure 4 Schematic diagram of the three-dimensional structure of a lithium battery;

[0024] Figure 5 is a cross-sectional schematic diagram of a lithium battery;

[0025] Figure 6 for Figure 5 A partial enlarged view of

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the charging case;

[0027] Figure 8 is another schematic diagram of the three-dimensional structure of the charging case;

[0028] Figure 9 is a cross-sectional schematic diagram of the charging case;

[0029] Figure 10 A partial schematic diagram of the interior of the charging case.

[0030] Description of Reference Numerals

[0031] 10. Lithium battery; 101. Housing; 1011. Receiving slot; 1012. Groove; 102. Winding core; 103. First circuit board; 1031. Component side; 1032. Polarity side; 1033. Cathode; 104. Protective cover; 1041. Exhaust hole; 105. Cathode; 106. First sealing body; 107. Protective body; 108. Explosion-proof body; 109. Second sealing body

[0032] 20. Charging sleeve; 201. Sleeve body; 2011. Mounting groove; 20111. Buffer member; 2012. Charging port; 2013. Second circuit board; 20131. Positive electrode member; 20132. Negative electrode member; 2014. Positive electrode channel; 2015. Negative electrode channel; 2016. Clamping groove; 20161. Clamping slope; 2017. Magnetic member. DETAILED DESCRIPTION

[0033] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details are included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0034] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] like Figure 1-Figure 3 As shown, Figure 1 Schematic diagram of the three-dimensional structure of a rechargeable battery; Figure 2 This is a disassembled state diagram of a rechargeable battery; Figure 3 The cross-sectional view of the rechargeable battery is shown in Figure 2. The rechargeable battery of the present application includes a lithium battery 10 and a charging sleeve 20. The lithium battery 10 and the charging sleeve 20 are detachably connected. Specifically, during charging, one end of the lithium battery 10 is clamped onto the charging sleeve 20, and the lithium battery 10 and the charging sleeve 20 are electrically connected. An external power source is connected to the charging sleeve 20 to charge the lithium battery 10. After charging is complete, the lithium battery 10 is separated from the charging sleeve 20, and the lithium battery 10 can be used alone.

[0036] Refer to it again Figure 4-Figure 6 As stated, Figure 4 is a schematic diagram of the three-dimensional structure of the lithium battery 10; Figure 5 is a schematic cross-sectional view of a lithium battery 10; Figure 6 for Figure 5 A partial enlarged view. The lithium battery 10 of the present application includes a shell 101, a winding core 102, a first circuit board 103, a protective cover 104 and a positive electrode body 105. The winding core 102 and the electrolyte are both arranged in the shell 101. The first circuit board 103 and the protective cover 104 are also arranged in the shell 101. The protective cover 104 is connected to the first circuit board 103 and the winding core 102. The first circuit board 103 is protected by the protective cover 104 to prevent the electrolyte from penetrating and contacting the electronic components on the first circuit board 103. The first circuit board 103 is connected to the winding core 102 through the protective cover 104. The positive electrode body 105 is located outside the shell 101, the positive electrode body 105 is connected to the first circuit board 103, and the positive electrode body 105 is exposed as the positive electrode of the entire lithium battery 10.

[0037] The shell 101 has a receiving groove 1011, which is opened along the axial direction of the shell 101. The core 102, the first circuit board 103 and the protective cover 104 are all located in the receiving groove 1011. The electrolyte injected later is also located in the receiving groove 1011. Furthermore, a groove 1012 is opened inward on the outer surface of the shell 101. Due to the setting of the groove 1012, the inner wall corresponding to the receiving groove 1011 forms an inward convex structure. This inward convex structure can not only fix the core 102, but also serve as a supporting point for the first circuit board 103 and the protective cover 104. That is, the inward convex structure is divided into an upper side and a lower side along the axial direction. The lower side is close to the core 102, and the protective cover 104 is located on the upper side.

[0038] In specific applications, the first circuit board 103 has a component side 1031 and a polarity side 1032, and the component side 1031 and the polarity side 1032 are opposite sides. In this embodiment, the side of the first circuit board 103 facing the winding core 102 is the component side 1031, and the side of the first circuit board 103 away from the winding core 102 is the polarity side 1032. Specifically, electronic components are integrated on the component side 1031, and the protective cover 104 is provided on the component side 1031, and the protective cover 104 is provided on the electronic components to protect the electronic components. In addition, the components of the first circuit board 103 Side 1031 also integrates a protection circuit. Compared with the traditional method of processing the protection circuit independently and then connecting it to the lithium battery 10, this embodiment can simplify the process and improve efficiency. In specific use, the first circuit board 103 can adjust the output voltage, for example, outputting a voltage value of 1.5V, 3.7V or 7.4V. Of course, the circuit supporting the first circuit board 103 in this embodiment is existing technology and only needs to be increased or decreased according to needs. Similarly, the electronic components are also existing technology. Therefore, the specific electronic component distribution and circuit composition of the first circuit board 103 will not be elaborated. The positive electrode body 105 is arranged on the polarity side 1032 and serves as the positive output terminal of the lithium battery 10. Furthermore, the polarity side 1032 is also provided with a negative electrode body 1033. The shell 101 is connected to the negative electrode body 1033. Specifically, the negative electrode body 1033 is arranged along the contour of the polarity side 1032, and the notch of the receiving groove 1011 on the shell 101 contacts the negative electrode body 1033 by folding inward.

[0039] It can be understood that the positive terminal of the winding core 102 is the positive electrode ear, which is conductively connected to the positive electrode body 105 through the protective cover 104 and the first circuit board 103. At this time, the positive electrode body 105 can serve as the positive electrode output terminal of the lithium battery 10; the negative terminal of the winding core 102 is the negative electrode ear, which is conductively connected to the first circuit board 103 through the shell 101 and the negative electrode body 1033. That is to say, the shell 101 will serve as the negative electrode output terminal of the lithium battery 10, so that the positive and negative electrodes of the lithium battery 10 form a complete circuit.

[0040] Preferably, the lithium battery 10 further includes a first sealing body 106, which is disposed between the protective cover 104 and the inner wall of the receiving groove 1011. In specific applications, the first sealing body 106 is located on the upper side of the groove 1012 of the housing 101, that is, the first sealing body 106 is supported by the upper side of the groove 1012. The protective cover 104 is disposed on the first sealing body 106 and supported by the first sealing body 106. The provision of the first sealing body 106 not only seals the lithium battery 10 to prevent the electrolyte in the receiving groove 1011 from flowing out, but also blocks contact between the protective cover 104 and the first circuit board 103 and the housing 101, thereby providing insulation. Specifically, the first sealing body 106 is made of a soft insulating material, such as plastic or silicone.

[0041] Furthermore, the lithium battery 10 also includes a protective body 107, which is disposed between the protective cover 104 and the first circuit board 103. The protective body 107 is electrically connected to the protective cover 104 and the first circuit board 103. Specifically, the protective body 107 is a PTC thermistor. The provision of the protective body 107 protects the lithium battery 10. For example, when the temperature is too high, the resistance of the protective body 107 increases, thereby blocking the conduction between the protective cover 104 and the first circuit board 103, that is, blocking the output of the positive terminal of the winding core 102. When the temperature drops, the resistance of the protective body 107 decreases, and the positive terminal of the winding core 102, the protective cover 104, the first circuit board 103, and the positive electrode body 105 can remain in a conductive state.

[0042] Furthermore, the lithium battery 10 also includes an explosion-proof body 108, which is connected to the positive terminal of the winding core 102. At the same time, the protective cover 104 has a vent 1041. The internal space of the receiving tank 1011 and the internal space of the protective cover 104 can be connected through the vent 1041. The side of the explosion-proof body 108 away from the positive terminal of the winding core 102 is connected to the wall of the vent 1041. It can be understood that due to the connection between the explosion-proof body 108 and the vent 1041, the vent 1041 is blocked at this time, and the electrolyte in the receiving tank 1011 will not flow into the protective cover 104 through the vent 1041, and will not cause damage to the first circuit board 103. Specifically, the explosion-proof body 108 is a CID explosion-proof valve. When there is excessive gas in the receiving tank 1011, the air pressure generated will force the explosion-proof body 108 to detach from the exhaust hole 1041. At this time, the internal space of the receiving tank 1011 is connected to the internal space of the protective cover 104. The gas can be discharged to the outside of the lithium battery 10 through the exhaust hole 1041 and the holes on the first circuit board 103, thereby achieving pressure relief. This prevents the lithium battery 10 from exploding due to excessive pressure inside, thereby improving the safety performance of the lithium battery 10.

[0043] Furthermore, the lithium battery 10 further includes a second sealing body 109, which is disposed between the explosion-proof body 108 and the protective cover 104. One side of the explosion-proof body 108 passes through the second sealing body 109 and is located in the exhaust hole 1041. The provision of the second sealing body 109 not only enhances the connection stability between the explosion-proof body 108 and the protective cover 104, but also seals the exhaust hole 1041 to prevent the electrolyte from flowing into the exhaust hole 1041. It is understandable that when the air pressure in the receiving tank 1011 exceeds a specified value, the explosion-proof body 108 not only detaches from the exhaust hole 1041, but also partially or completely detaches from the second sealing body 109, and the gas is discharged through the gap formed by the detachment of the explosion-proof body 108.

[0044] It should also be noted that the “conductive connection” referred to above is a connection mode in which current can be conducted, such as a connection between metals, which can conduct current.

[0045] It can be seen that the electronic components are concentrated on the component side 1031 of the first circuit board 103, and the component side 1031 faces the core 102. The protective cover 104 protects the component side 1031 to prevent the electrolyte from seeping in and damaging the electronic components. The positive end of the core 102 is connected to the first circuit board 103 through the protective cover 104, and then the positive electrode body 105 is used as the positive electrode. The shell 101 is connected to the negative end of the core 102 as the negative electrode; the component side 1031 of the first circuit board 103 is set inward, which can make full use of the space in the accommodating groove 1011, solve the problem of large volume caused by traditional electronic components facing outward, and reduce the volume of the lithium battery 10 to meet the needs of current products.

[0046] Refer to it again Figure 7-10 As shown, Figure 7 Schematic diagram of the three-dimensional structure of the charging sleeve 20; Figure 8 is another schematic diagram of the three-dimensional structure of the charging sleeve 20; Figure 9 is a cross-sectional schematic diagram of the charging sleeve 20; Figure 10 Schematic diagram of a portion of the interior of the charging sleeve 20. The charging sleeve 20 of the present application includes a sleeve body 201, which is sleeved on one end of the lithium battery 10 and charged by an external power source.

[0047] The sleeve 201 has a mounting groove 2011, a charging port 2012, and a second circuit board 2013. One end of the positive electrode 105 of the lithium battery 10 is fixed in the mounting groove 2011, and the second circuit board 2013 is arranged in the charging port 2012. The second circuit board 2013 is electrically connected to the lithium battery 10 in the mounting groove 2011. In a specific application, the sleeve 201 is cylindrical, and the mounting groove 2011 is opened along the axis of the sleeve 201. The charging port 2012 is located at the end of the sleeve 201 away from the mounting groove 2011, or the charging port 2012 is opened on the outer surface of the sleeve 201. Furthermore, the lithium battery 10 and the mounting groove 2011 are detachably connected. When the lithium battery 10 needs to be charged, the lithium battery 10 is inserted into the mounting groove 2011 of the sleeve 201; after the lithium battery 10 is fully charged, the lithium battery 10 is removed from the mounting groove 2011.

[0048] Preferably, a buffer member 20111 is further provided in the mounting groove 2011. The buffer member 20111 is disposed along the inner wall of the mounting groove 2011. When the lithium battery 10 is inserted into the mounting groove 2011, the buffer member 20111 is located between the inner wall of the mounting groove 2011 and the outer surface of the housing 101 of the lithium battery 10. The buffer member 20111 protects the outer surface of the housing 101 and prevents the inner wall of the mounting groove 2011 from causing wear on the outer surface of the housing 101. Specifically, the buffer member 20111 is made of a soft material, such as plastic or silicone.

[0049] In this embodiment, the shape of the charging port 2012 can be adapted to the external power source. For example, the shape of the charging port 2012 can be adapted to a Type-C connector, meaning that a common Type-C connector can be inserted into the charging port 2012 and electrically connected to the second circuit board 2013. Of course, the charging port 2012 can also be adapted to other connectors, not just the Type-C connector.

[0050] The second circuit board 2013 includes a positive electrode member 20131 and a negative electrode member 20132. One end of the positive electrode member 20131 is connected to the second circuit board 2013, and the other end thereof extends into the mounting slot 2011. One end of the negative electrode member 20132 is connected to the second circuit board 2013, and the other end thereof extends into the mounting slot 2011. When the lithium battery 10 is inserted, the positive electrode member 20131 is electrically connected to the positive electrode body 105 of the lithium battery 10, and the negative electrode member 20132 is electrically connected to the housing 101 or the negative electrode body 1033 of the lithium battery 10, thereby establishing electrical communication between the second circuit board 2013 and the lithium battery 10. Specifically, the positive electrode member 20131 and the negative electrode member 20132 are both conductive wires, such as cables, or copper wire or other metal wires. Furthermore, the charging sleeve 20 also has a positive electrode channel 2014, which connects to the charging port 2012 and the mounting slot 2011, respectively. The positive electrode member 20131 is located within the positive electrode channel 2014. The provision of the positive electrode channel 2014 facilitates the rapid extension of the positive electrode member 20131 to the mounting slot 2011 and also protects the positive electrode member 20131. Similarly, the charging sleeve 20 also has a negative electrode channel 2015, which is spaced apart from the positive electrode channel 2014 and connects to the charging port 2012 and the mounting slot 2011, respectively. The negative electrode member 20132 is located within the negative electrode channel 2015.

[0051] Furthermore, the charging sleeve 20 also has a clamping groove 2016, which is connected to the mounting groove 2011. When the lithium battery 10 is inserted into the mounting groove 2011, the positive electrode 105 of the lithium battery 10 is inserted into the clamping groove 2016, thereby improving the stability of the connection between the sleeve 201 and the lithium battery 10. In specific applications, the clamping groove 2016 is connected to the positive electrode channel 2014, that is, one end of the positive electrode member 20131 passes through the positive electrode channel 2014 and the clamping groove 2016 and then extends into the mounting groove 2011. Preferably, a clamping slope 20161 is provided on the outer surface of one end of the clamping groove 2016 close to the mounting groove 2011, and the cross-section of the clamping slope 20161 is in the shape of an inverted "eight", or can be understood as a trumpet shape, wherein the diameter of the clamping slope 20161 gradually decreases in the direction close to the mounting groove 2011 to enhance the clamping effect of the clamping groove 2016 on the positive electrode 105 of the lithium battery 10.

[0052] In another embodiment, the charging sleeve 20 further includes a magnetic member 2017, which is located within the clamping groove 2016. The positive electrode member 20131 is connected to the magnetic member 2017 and is electrically conductive. When the positive electrode 105 of the lithium battery 10 is inserted into the clamping groove 2016, the magnetic member 2017 is attracted to and connected to the positive electrode 105 of the lithium battery 10. The provision of the magnetic member 2017 not only allows the positive electrode member 20131 to quickly connect to the positive electrode 105 of the lithium battery 10, but also reduces the risk of the positive electrode member 20131 not being in contact with the positive electrode 105 of the lithium battery 10. Specifically, the magnetic member 2017 is a magnet.

[0053] When the lithium battery 10 needs to be charged, one end of the lithium battery 10 is inserted into the mounting slot 2011. At the same time, the positive electrode 105 at that end is snapped into the clamping slot 2016. The magnetic member 2017 is attracted to the positive electrode 105 of the lithium battery 10, while the negative electrode 20132 contacts and conducts with the housing 101 or the negative electrode 1033 of the lithium battery 10. An external power source is then plugged into the charging port 2012 and connected to the second circuit board 2013. At this point, the lithium battery 10 can be charged. After charging is complete, the sleeve 201 is removed from one end of the lithium battery 10.

[0054] To further illustrate, the second circuit board 2013 is a product used in existing charging ports, which will not be elaborated here.

[0055] In summary, when the lithium battery 10 needs to be charged, one end of the lithium battery 10 is inserted into the mounting slot 2011, the positive electrode member 20131 is connected to the positive electrode body 105 of the lithium battery 10, the negative electrode member 20132 is connected to the housing 101 of the lithium battery 10, and an external power supply is plugged into the charging port 2012. The second circuit board 2013, the positive electrode member 20131, the negative electrode member 20132, the positive electrode body 105, and the first circuit board 106 cooperate to charge the lithium battery 10. After charging is complete, the lithium battery 10 can be removed from the mounting slot 2011. This not only meets the charging requirements of the lithium battery 10, but also does not increase the size of the lithium battery 10, solving the problem of not being able to provide a charging port 2012 due to insufficient space in the lithium battery 10, and is suitable for most lithium batteries 10.

[0056] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A rechargeable battery, characterized in that: include: A lithium battery (10) comprising a housing (101), a winding core (102), a first circuit board (103), a protective cover (104), and a positive electrode body (105); the first circuit board (103) having an element side (1031) and a polarity side (1032) arranged opposite to each other; the housing (101) having a receiving groove (1011); the winding core (102) being arranged in the receiving groove (1011); the first circuit board (103) being arranged in a notch of the receiving groove (1011); and the element side (1031) facing the winding core (102); the protective cover (104) being arranged on the element side (1031); and the positive electrode body (105) being arranged on the polarity side (1032); The negative terminal of the winding core (102) is conductively connected to the polarity side (1032) through the shell (101), and the positive terminal of the winding core (102) is conductively connected to the positive electrode body (105) through the protective cover (104); A charging sleeve (20), comprising a sleeve body (201), the sleeve body (201) having a mounting groove (2011), a charging port (2012), and a second circuit board (2013), the second circuit board (2013) being arranged in the charging port (2012), the second circuit board (2013) having a positive electrode member (20131) and a negative electrode member (20132), the positive electrode member (20131) and the negative electrode member (20132) both extending into the mounting groove (2011); Charging state: the housing (101) is detachably disposed in the mounting groove (2011), the positive electrode body (105) is in contact with and conductive to the positive electrode member (20131), the housing (101) is in contact with and conductive to the negative electrode member (20132), and an external power source charges the lithium battery (10) via the second circuit board (2013); After charging is completed, the lithium battery (10) is separated from the charging sleeve (20), and the lithium battery (10) can be used alone; The lithium battery (10) further comprises a first sealing body (106), wherein the first sealing body (106) is arranged between the protective cover (104) and the wall surface of the accommodating groove (1011).

2. The rechargeable battery according to claim 1, wherein The lithium battery (10) further includes a protective body (107), wherein the protective body (107) is arranged between the protective cover (104) and the element side (1031).

3. The rechargeable battery according to claim 1, wherein The lithium battery (10) further comprises an explosion-proof body (108), the protective cover (104) is provided with an exhaust hole (1041), and the explosion-proof body (108) is respectively connected to the wall surface of the exhaust hole (1041) and the positive terminal of the winding core (102).

4. The rechargeable battery according to claim 3, characterized in that The lithium battery (10) further comprises a second sealing body (109), the second sealing body (109) being located between the explosion-proof body (108) and the protective cover (104), and one end of the explosion-proof body (108) passing through the second sealing body (109) and connected to the wall surface of the exhaust hole (1041).

5. The rechargeable battery according to any one of claims 1 to 4, characterized in that: The sleeve (201) further comprises a positive electrode channel (2014) and a negative electrode channel (2015) that are spaced apart from each other. The positive electrode channel (2014) and the negative electrode channel (2015) are both connected to the mounting groove (2011) and the charging port (2012). The positive electrode member (20131) is located in the positive electrode channel (2014), and the negative electrode member (20132) is located in the negative electrode channel (2015).

6. The rechargeable battery according to any one of claims 1 to 4, characterized in that: The sleeve (201) further comprises a clamping groove (2016), the clamping groove (2016) being in communication with the mounting groove (2011), and the positive electrode member (20131) extending to the clamping groove (2016) or the mounting groove (2011).

7. The rechargeable battery according to claim 6, characterized in that A clamping slope (20161) is provided at one end of the clamping groove (2016) close to the mounting groove (2011).

8. The rechargeable battery according to claim 6, characterized in that The sleeve (201) further comprises a magnetic part (2017), the magnetic part (2017) being clamped in the clamping groove (2016), and the positive electrode part (20131) being conductively connected to the magnetic part (2017).

9. The rechargeable battery according to any one of claims 1 to 4, characterized in that: A buffer member (20111) is provided on the inner wall surface of the installation groove (2011).

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