Rechargeable battery

Abstract

Disclosed in the present application is a rechargeable battery, comprising: a lithium battery, which comprises a casing, a jelly roll, a first circuit board, a protective cover and a positive electrode body, wherein the first circuit board has a component side and a polarity side that are arranged opposite each other, the casing has an accommodating groove, the jelly roll is disposed in the accommodating groove, the first circuit board is disposed at an opening of the accommodating groove, with the component side facing the jelly roll, the protective cover is disposed on the component side, and the positive electrode body is disposed on the polarity side; and a charging shell, which has a charging port, a second circuit board and a terminal post. The charging shell is fixedly sleeved at one end of the lithium battery and serves as a positive terminal of the lithium battery; an external power supply is inserted into the charging port and achieves conductive connection with the lithium battery by means of the second circuit board, thereby enabling charging of the lithium battery; during use, the charging shell and the lithium battery together constitute an integrated rechargeable battery, so that not only are conventional performances of the lithium battery retained, but the problem of the lithium battery being unable to be provided with a charging port due to insufficient space is also solved; moreover, the first circuit board is arranged facing inward, which is conducive to reducing the volume of the rechargeable battery.

Description

rechargeable batteries Technical Field

[0001] This application relates to the field of energy storage product technology, and more specifically, to a rechargeable battery. Background Technology

[0002] To reduce the cost of using rechargeable batteries, they were developed. Early rechargeable batteries required an additional charging dock, which was inconvenient. To facilitate charging, the Type-C charging port, the same as that used in mobile phones, is now the more popular method. Consumers can simply use a phone charging cable to charge the battery. While this method makes charging more convenient, it requires space within the battery itself to accommodate the charging port, increasing the battery's size. Furthermore, for batteries with limited space, it's difficult to find room for such a port.

[0003] Application content

[0004] In view of the shortcomings of the prior art, this application provides a rechargeable battery.

[0005] This application discloses a rechargeable battery, comprising:

[0006] A lithium battery includes a casing, a winding core, a first circuit board, a protective cover, and a positive electrode. The first circuit board has an element side and a polarity side that are disposed opposite to each other. The casing has a receiving groove. The winding core is disposed in the receiving groove. The first circuit board is disposed at the opening of the receiving groove with the element side facing the winding core. The protective cover is disposed on the element side, and the positive electrode is disposed on the polarity side.

[0007] The negative terminal of the core is electrically connected to the polarity side through the shell, and the positive terminal of the core is electrically connected to the positive electrode through the protective cover.

[0008] A charging case is disposed at the end of a housing. The charging case has a charging port, a second circuit board, and a terminal post. The second circuit board is disposed inside the charging port, and the terminal post is located at the end of the charging case away from the housing. The second circuit board is electrically connected to the positive electrode and the terminal post, and the second circuit board is also electrically connected to the housing and / or the polarity side.

[0009] According to one embodiment of this application, the charging case further includes a first conductive element and a second conductive element. The first conductive element is connected to the positive electrode, the second circuit board and the terminal post, respectively, and the second conductive element is connected to the second circuit board and the housing and / or the polarity side, respectively.

[0010] According to one embodiment of this application, the charging case further has a receiving groove, in which the charging port, the second circuit board, the first conductive element and the second conductive element are all disposed, and one end of the case is located in the receiving groove.

[0011] According to an embodiment of the present application, the charging shell is made of insulating material.

[0012] According to an embodiment of the present application, the polar side is provided with a negative electrode body, the shell is electrically connected with the negative electrode body, and the second circuit board is electrically connected with the shell and / or the negative electrode body.

[0013] According to an embodiment of the present application, the lithium battery further comprises a first sealing body arranged between the protective cover and the wall surface of the accommodating groove.

[0014] According to an embodiment of the present application, the lithium battery further comprises a protective body arranged between the protective cover and the element side.

[0015] According to an embodiment of the present application, the lithium battery further comprises an explosion-proof body, the protective cover is provided with an exhaust hole, and the explosion-proof body is connected with the wall surface of the exhaust hole and the positive electrode end of the winding core.

[0016] According to an embodiment of the present application, the lithium battery further comprises a second sealing body arranged between the explosion-proof body and the protective cover, and one end of the explosion-proof body penetrates through the second sealing body and is connected with the wall surface of the exhaust hole.

[0017] According to an embodiment of the present application, the shell is provided with a groove inwardly.

[0018] The present application has the beneficial effect that the charging shell is fixedly sleeved at one end of the lithium battery and serves as the positive electrode end of the lithium battery, an external power source is inserted into the charging port and is electrically connected with the lithium battery through the second circuit board, the lithium battery can be charged, and the charging shell and the lithium battery serve as a complete charging battery during use; in this way, not only the conventional performance of the lithium battery is retained, but also the problem of insufficient space of the lithium battery to open the charging port is solved; at the same time, the inward arrangement of the first circuit board is conducive to reducing the volume of the charging battery. BRIEF DESCRIPTION OF DRAWINGS

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

[0020] Fig. 1 is a schematic view of the charging battery in perspective;

[0021] Fig. 2 is a schematic view of the charging battery in cross section;

[0022] Fig. 3 is another schematic view of the charging battery in perspective;

[0023] Fig. 4 is a schematic view of the lithium battery in perspective;

[0024] Fig. 5 is a schematic view of the lithium battery in cross section;

[0025] Fig. 6 is a partial enlarged view of Fig. 5.

[0026] Reference numerals

[0027] 10, lithium battery; 101, housing; 1011, accommodating groove; 1012, recess; 102, roll core; 103, first circuit board; 1031, component side; 1032, polarity side; 1033, negative electrode body; 104, protective cover; 1041, exhaust hole; 105, positive electrode body; 106, first sealing body; 107, protective body; 108, explosion-proof body; 109, second sealing body;

[0028] 20, charging housing; 201, charging port; 202, second circuit board; 203, pole; 204, first conductive member; 205, second conductive member; 206, accommodating groove. DETAILED DESCRIPTION

[0029] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, a number of practical details will be described in the following description. However, it should be appreciated that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0030] In addition, in the present application, the description such as "first", "second", etc. is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application. It is merely for the purpose of distinguishing components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0031] As shown in Figs. 1-6, Fig. 1 is a schematic view of the structure of a charging battery; Fig. 2 is a schematic view of the cross section of the charging battery; Fig. 3 is another schematic view of the structure of the charging battery; Fig. 4 is a schematic view of the structure of a lithium battery; Fig. 5 is a schematic view of the cross section of the lithium battery; and Fig. 6 is a partial enlarged view of Fig. 5. The charging battery of the present application includes a lithium battery 10 and a charging housing 20, which is arranged at one end of the lithium battery 10. Specifically, the charging housing 20 is fixedly connected with the lithium battery 10, i.e. cannot be detached, for example, the two are connected as a whole by using glue.

[0032] The lithium battery 10 comprises a shell 101, a winding core 102, a first circuit board 103, a protective cover 104 and a positive electrode body 105. The charging shell 20 is arranged at one end of the shell 101. The winding core 102 and electrolyte are 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 with the first circuit board 103 and the winding core 102. The first circuit board 103 is protected by the protective cover 104, so as to prevent the electrolyte from penetrating into and contacting with the electronic components on the first circuit board 103. The first circuit board 103 is connected with the winding core 102 through the protective cover 104. The positive electrode body 105 is arranged outside the shell 101. The positive electrode body 105 is connected with the first circuit board 103. The positive electrode body 105 is exposed as the positive electrode of the whole lithium battery 10.

[0033] The shell 101 has a containing groove 1011. The containing groove 1011 is axially arranged in the shell 101. The winding core 102, the first circuit board 103 and the protective cover 104 are arranged in the containing groove 1011. The electrolyte injected later is also arranged in the containing groove 1011. Further, the outer surface of the shell 101 is inwardly provided with a groove 1012. Due to the arrangement of the groove 1012, the inner wall of the containing groove 1011 corresponding to the groove 1012 forms an inner convex structure. The inner convex structure can fix the winding core 102 and also can be used as the bearing point of the first circuit board 103 and the protective cover 104. The inner convex structure is axially divided into an upper side and a lower side. The lower side is close to the winding core 102. The protective cover 104 is arranged on the upper side.

[0034] In a specific application, the first circuit board 103 has an element side 1031 and a polarity side 1032, which are opposite to each other. In this embodiment, the side of the first circuit board 103 facing the winding core 102 is the element side 1031, and the side of the first circuit board 103 away from the winding core 102 is the polarity side 1032. Specifically, the electronic components are integrated on the element side 1031, and the protective cover 104 is arranged on the element side 1031 and covers the electronic components to protect the electronic components. In addition, the element side 1031 of the first circuit board 103 also integrates a protection circuit. Compared with the conventional method of connecting the protection circuit to the lithium battery 10 after independent processing, the present embodiment can simplify the process and improve the efficiency. In a specific use, the first circuit board 103 can adjust the output voltage, for example, output a voltage value of 1.5V, 3.7V or 7.4V. Of course, the circuit of the first circuit board 103 in this embodiment is a prior art, and only needs to be increased or decreased according to the needs. Similarly, the electronic components are also a prior art, and therefore, the specific distribution of electronic components and the composition of the circuit of the first circuit board 103 will not be described in detail. The positive body 105 is arranged on the polarity side 1032 as the positive output end of the lithium battery 10. Further, the polarity side 1032 is also provided with a negative body 1033, and the shell 101 is connected with the negative body 1033. Specifically, the negative body 1033 is arranged along the contour of the polarity side 1032, and the slot opening of the accommodating groove 1011 on the shell 101 is in contact with the negative body 1033 through inner folding.

[0035] It can be understood that the positive end of the winding core 102 is a positive tab, which is conductively connected with the positive body 105 through the protective cover 104 and the first circuit board 103. At this time, the positive body 105 can serve as the positive output end of the lithium battery 10. The negative end of the winding core 102 is a negative tab, which is conductively connected with the first circuit board 103 through the shell 101 and the negative body 1033. That is, the shell 101 serves as the negative output end of the lithium battery 10, so that the positive and negative electrodes of the lithium battery 10 form a complete loop.

[0036] Preferably, the lithium battery 10 further comprises a first sealing body 106, which is arranged between the protective cover 104 and the inner wall surface of the accommodating groove 1011. In a specific application, the first sealing body 106 is located on the upper side of the groove 1012 of the shell 101, that is, the first sealing body 106 is supported by the upper side of the groove 1012. The protective cover 104 is arranged on the first sealing body 106 and is supported by the first sealing body 106. Through the arrangement of the first sealing body 106, not only the sealing effect of the lithium battery 10 is achieved to prevent the electrolyte in the accommodating groove 1011 from flowing out, but also the contact between the protective cover 104 and the first circuit board 103 and the shell 101 is blocked, achieving the insulation effect. Specifically, the first sealing body 106 is made of a soft insulating material, for example, plastic or silicone.

[0037] Further, the lithium battery 10 further comprises a protection body 107, which is arranged between the protection cover 104 and the first circuit board 103, and is in conductive connection with the protection cover 104 and the first circuit board 103. Specifically, the protection body 107 is a PTC thermistor. By arranging the protection body 107, the lithium battery 10 is protected. For example, when the temperature is too high, the resistance of the protection body 107 increases, thereby blocking the conduction between the protection cover 104 and the first circuit board 103, i.e., blocking the output of the positive terminal of the winding core 102. After the temperature decreases, the resistance of the protection body 107 decreases, and the positive terminal of the winding core 102, the protection cover 104, the first circuit board 103 and the positive body 105 can remain in a conductive state.

[0038] Further, the lithium battery 10 further comprises an explosion-proof body 108, which is connected to the positive terminal of the winding core 102. In addition, the protection cover 104 is provided with an exhaust hole 1041, and the internal space of the accommodating groove 1011 and the internal space of the protection cover 104 can communicate through the exhaust hole 1041. The side of the explosion-proof body 108 away from the positive terminal of the winding core 102 is connected to the wall surface of the exhaust hole 1041. It can be understood that, due to the connection between the explosion-proof body 108 and the exhaust hole 1041, at this time, the exhaust hole 1041 is blocked, and the electrolyte in the accommodating groove 1011 will not flow into the protection cover 104 through the exhaust hole 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 excess gas in the accommodating groove 1011, the gas pressure generated thereby will force the explosion-proof body 108 to separate from the exhaust hole 1041. At this time, the internal space of the accommodating groove 1011 and the internal space of the protection cover 104 are communicated, and 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, so as to realize pressure relief processing, thereby preventing the lithium battery 10 from exploding due to excessive pressure inside, and improving the safety performance of the lithium battery 10.

[0039] Further, the lithium battery 10 further comprises a second sealing body 109, which is arranged between the explosion-proof body 108 and the protection cover 104. One side of the explosion-proof body 108 penetrates through the second sealing body 109 and is located in the exhaust hole 1041. By arranging the second sealing body 109, the connection stability of the explosion-proof body 108 and the protection cover 104 is enhanced, and the exhaust hole 1041 can also be sealed to prevent the electrolyte from flowing into the exhaust hole 1041. It can be understood that, when the gas pressure in the accommodating groove 1011 exceeds a limited value, the explosion-proof body 108 not only separates from the exhaust hole 1041, but also partially or completely separates from the second sealing body 109, and the gas is discharged through the gap formed by the separation of the explosion-proof body 108.

[0040] It should be noted that the above-mentioned "conductive connection" is a connection mode that can conduct current, such as the connection between metal and metal, which can conduct current.

[0041] It can be seen that the electronic components are concentrated on the component side 1031 of the first circuit board 103, the component side 1031 faces the winding 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 terminal of the winding core 102 is connected to the first circuit board 103 through the protective cover 104, and the positive body 105 is used as a positive electrode for output, and the shell 101 is connected to the negative terminal of the winding core 102 as a negative electrode; The component side 1031 of the first circuit board 103 is arranged inward, which can make full use of the space in the accommodation groove 1011, solve the problem of large volume caused by the outward electronic components, and reduce the volume of the lithium battery 10, which is conducive to meeting the current product demand.

[0042] The charging shell 20 has a charging port 201, a second circuit board 202, and a pole 203. The charging port 201 is provided at the end or side of the charging shell 20, the second circuit board 202 is located in the charging port 201, and the pole 203 is located at the end of the charging shell 20 away from the lithium battery core. The second circuit board 202 is in conductive connection with the positive body 105 and the pole 203, and the second circuit board 202 is also in contact with the shell 101 and / or the negative body 1033. Specifically, the second circuit board 202 connects the positive body 105 and the pole 203 in conduction, and the pole 203 serves as the positive electrode of the charging battery, and the negative electrode of the second circuit board 202 is in conduction with the shell or the negative body. In use, the external power supply is inserted into the charging port 201 and is in conduction with the second circuit board 202, at which time the charging state of the charging battery.

[0043] The shape of the charging port 201 in the embodiment can be adapted to the external power supply, for example, the shape of the charging port 201 is adapted to the type-C connector, that is, the common type-C connector can be inserted into the charging port 201 and connected to the circuit board for conduction. Of course, other connectors can also be selected for the charging port 201, and it is not limited to the type-C connector. Further, the second circuit board 202 is selected from the existing products used for charging ports, which will not be described here.

[0044] In a specific application, the charging shell 20 further comprises a first conductive member 204 and a second conductive member 205. The first conductive member 204 connects the second circuit board 202, the positive electrode body 105 and the pole 203. The second conductive member 205 connects the second circuit board 202 and the shell 101. The first conductive member 204 and the second conductive member 205 realize the conduction between the second circuit board 202 and the positive electrode body 105, the pole 203 and the shell 101. Specifically, the first conductive member 204 and the second conductive member 205 are existing conductive products, such as metal wires or cables. Further, the charging shell 20 further comprises a receiving groove 206. The charging port 201 extends into the receiving groove 206, that is, the charging port 201 is located in the receiving groove 206. Meanwhile, the second circuit board 202, the first conductive member 204 and the second conductive member 205 are all located in the receiving groove 206. One end of the shell 101 provided with the positive electrode body 105 is located in the receiving groove 206.

[0045] Specifically, the charging shell 20 is made of an insulating material, such as a plastic material.

[0046] In summary, the charging shell 20 is fixedly sleeved on one end of the lithium battery 10 and serves as a positive electrode end of the lithium battery 10. An external power source is inserted into the charging port 201 and realizes the conductive connection with the lithium battery 10 through the second circuit board 202, so as to charge the lithium battery 10. In use, the charging shell 20 and the lithium battery 10 serve as a complete charging battery. In this way, not only the conventional performance of the lithium battery 10 is retained, but also the problem that the lithium battery 10 cannot be provided with the charging port 201 due to insufficient space is solved. Meanwhile, the first circuit board is arranged inward, which is conducive to reducing the size of the charging battery.

[0047] The above only describes the embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A rechargeable battery, characterized by The lithium battery (10) comprises a shell (101), a roll core (102), a first circuit board (103), a protective cover (104) and a positive electrode body (105), the first circuit board (103) has an element side (1031) and a polarity side (1032) arranged oppositely, the shell (101) has a containing groove (1011), the roll core (102) is arranged in the containing groove (1011), the first circuit board (103) is arranged at the opening of the containing groove (1011), and the element side (1031) faces the roll core (102), the protective cover (104) is arranged on the element side (1031), and the positive electrode body (105) is arranged on the polarity side (1032). The negative electrode end of the roll core (102) is electrically connected with the polarity side (1032) through the shell (101), and the positive electrode end of the roll core (102) is electrically connected with the positive electrode body (105) through the protective cover (104). A charging shell (20) is arranged at one end of the shell (101), the charging shell (20) has a charging port (201), a second circuit board (202) and a pole (203), the second circuit board (202) is arranged in the charging port (201), and the pole (203) is located at the end of the charging shell (20) away from the shell (101); the second circuit board (202) is electrically connected with the positive electrode body (105) and the pole (203), and the second circuit board (202) is also electrically connected with the shell (101) and / or the polarity side (1032). The charging shell (20) also has a first conductive part (204) and a second conductive part (205), the first conductive part (204) is connected with the positive electrode body (105), the second circuit board (202) and the pole (203) respectively, and the second conductive part (205) is connected with the second circuit board (202) and the shell (101) and / or the polarity side (1032) respectively.

2. The rechargeable battery of claim 1, wherein The charging shell (20) also has a containing groove (206), the charging port (201), the second circuit board (202), the first conductive part (204) and the second conductive part (205) are arranged in the containing groove (206), and one end of the shell (101) is located in the containing groove (206).

3. The rechargeable battery of claim 2, wherein The charging shell (20) is made of an insulating material.

4. The rechargeable battery of claim 1, wherein The polarity side (1032) is provided with a negative electrode body (1033), the shell (101) is electrically connected with the negative electrode body (1033), and the second circuit board (202) is electrically connected with the shell (101) and / or the negative electrode body (1033).

5. The rechargeable battery of any of claims 1-4, wherein The lithium battery (10) also comprises a first sealing body (106), the first sealing body (106) is arranged between the protective cover (104) and the wall surface of the containing groove (1011).

6. The rechargeable battery of any one of claims 1-4, wherein, ​ 7. The rechargeable battery of any of claims 1-4, wherein The lithium battery (10) further comprises a protection body (107) arranged between the protection cover (104) and the element side (1031).

8. The rechargeable battery of any one of claims 1-4, wherein The lithium battery (10) further comprises an explosion-proof body (108), the protection cover (104) is provided with an exhaust hole (1041), and the explosion-proof body (108) is connected with the wall surface of the exhaust hole (1041) and the positive electrode end of the roll core (102) respectively.

9. The rechargeable battery of any of claims 1-4, wherein The lithium battery (10) further comprises a second sealing body (109) located between the explosion-proof body (108) and the protection cover (104), one end of the explosion-proof body (108) penetrates through the second sealing body (109) and is connected with the wall surface of the exhaust hole (1041).

10. The rechargeable battery of any one of claims 1-4, wherein The shell (101) is provided with a recess (1012) inwardly.

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