Battery cover plate, battery and electric equipment

Abstract

The utility model discloses a battery cover plate, a battery and electric equipment, the battery cover plate comprises a cover plate body, a protective cover and at least one accommodating bin, and the cover plate body is provided with a through hole; the protective cover is connected to the side, away from the shell, of the cover plate body and provided with a containing cavity communicating with the through hole. The containing bin is arranged in the containing cavity, contents are stored in the containing bin, and the bin wall of the containing bin is provided with a weak part used for releasing the contents. According to the battery cover plate disclosed by the utility model, the protective cover is arranged on the outer side of the cover plate body, the protective cover does not occupy the space in the shell and does not influence the energy capacity of the battery cell, the at least one accommodating bin is arranged in the protective cover, and the contents are stored in the accommodating bin, so that when the battery is used in the later period, the contents can be stored in the accommodating bin; the containing bin releases the same or different contents into the shell through the weak part to supplement a lithium material for the battery or reduce the temperature of the battery, so that the service life of the battery can be prolonged and the safety of the battery can be improved on the basis of improving the electricity storage capacity of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery cover, a battery and an electrical device. Background Art

[0002] In the related art, secondary batteries are also called rechargeable batteries or storage batteries, which refer to batteries that can be recharged to activate the active materials and continue to be used after the battery is discharged. During the long-term use of the battery, the lithium ions inside it will be lost to a certain extent, and its capacity will decrease after the lithium ions are lost; moreover, when the battery is used, heat will be generated inside the battery, which will have a certain impact on the battery life in the long run. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a battery cover, wherein a protective cover is arranged on the outer side of the cover body, and at least one storage compartment is arranged inside the protective cover, and contents are stored in the storage compartment. When the battery is used later, the storage compartment releases the same or different contents into the shell through a weak part to replenish lithium materials for the battery or reduce the temperature of the battery, thereby increasing the battery's service life and safety on the basis of improving the battery's power storage capacity.

[0004] The utility model also provides a battery with the battery cover plate.

[0005] According to the battery cover of the first aspect of the utility model, the cover includes: a cover body, the cover body has a through hole; a protective cover, the protective cover is connected to the side of the cover body away from the shell, the protective cover has a accommodating cavity connected to the through hole; at least one accommodating bin, the accommodating bin is arranged in the accommodating cavity, the accommodating bin stores contents, and the bin wall of the accommodating bin has a weak portion for releasing the contents.

[0006] According to the battery cover plate of the embodiment of the utility model, a protective cover is arranged on the outer side of the cover plate body, the protective cover does not occupy the space in the shell body, and will not affect the energy density of the battery cell. At least one storage bin is arranged in the protective cover, and contents are stored in the storage bin. When the battery is used in the later stage, the storage bin releases the same or different contents into the shell body through the weak part to replenish lithium material for the battery or reduce the temperature of the battery. On the basis of improving the battery storage capacity, the service life and safety of the battery can also be increased.

[0007] According to some embodiments of the present invention, a valve body is provided on the weak portion, and the valve body is used to open or close the accommodating bin; and / or a notch is provided on the weak portion.

[0008] According to some embodiments of the present utility model, the accommodating bin is disposed adjacent to the through hole.

[0009] According to some embodiments of the present utility model, the accommodating bin is a cuboid extending along the length direction of the protection cover, the accommodating bin has a first bin wall facing the through hole, and the weak part is disposed on the first bin wall.

[0010] According to some embodiments of the present utility model, the accommodating bin is welded in the accommodating cavity, or the accommodating bin is detachably mounted in the accommodating cavity through a snap structure.

[0011] According to some embodiments of the present utility model, a first positioning part is disposed on the cover plate body, and a second positioning part that is in positioning cooperation with the first positioning part is disposed on the protection cover.

[0012] According to some embodiments of the present utility model, the first positioning part includes an annular groove surrounding the through hole, and the second positioning part includes a flange on the circumferential side wall of the protection cover.

[0013] According to some embodiments of the present utility model, the battery cover plate further includes a pole column and a lead-out piece, the pole column is mounted on the cover plate body and is spaced apart from the protection cover, and the lead-out piece is connected between the pole column and the pole ear, wherein a part of the lead-out piece is located in the accommodating cavity.

[0014] According to some embodiments of the present utility model, the battery cover plate further includes an insulating member, the insulating member is disposed on the cover plate body, and the insulating member is used to prevent the lead-out piece from moving towards the cover plate body.

[0015] According to some embodiments of the present utility model, the insulating member is located on a side of the cover plate body away from the protection cover, the insulating member has a communication hole opposite to the through hole, and the lead-out piece passes through the communication hole and the through hole, wherein the inner side surface of the through hole is located outside the inner side surface of the communication hole.

[0016] The battery according to the second aspect embodiment of the present utility model includes: a housing having an opening; the battery cover plate according to the first aspect embodiment above of the present utility model, the battery cover plate is connected to the housing for closing the opening.

[0017] According to the battery of the embodiment of the present utility model, by providing the above battery cover plate, the space outside the cover plate body is reasonably utilized, a protective cover is provided outside the cover plate body, and part of the lead-out piece is located inside the protective cover, so that the space of the housing occupied by the lead-out piece can be saved, and the energy density of the battery cell can be improved; at the same time, a receiving chamber is provided inside the protective cover, the space of the protective cover is reasonably utilized, and the receiving chamber stores contents. During the later use of the battery, the receiving chamber releases the same or different contents into the housing through the weak part, so as to supplement lithium materials for the battery or reduce the temperature of the battery. On the basis of improving the battery's power storage capacity, the service life and safety of the battery can also be increased.

[0018] According to some embodiments of the present utility model, the battery includes a battery cell, a lead-out piece, and a pole ear at the end of the battery cell. Part of the pole ear is located inside the accommodating cavity. The battery cover plate includes a pole column. The lead-out piece includes a lead-out piece body and an extension piece arranged at an angle. The extension piece is located inside the accommodating cavity and is connected to the pole ear, and the lead-out piece body is connected to the pole column.

[0019] According to some embodiments of the present utility model, a circular recess is provided on one side of the outer peripheral edge of the cover plate body facing the housing, and the side wall of the housing is installed inside the circular recess.

[0020] The electrical equipment according to the third aspect embodiment of the present utility model includes: the battery according to the second aspect embodiment of the present utility model above.

[0021] According to the electrical equipment of the embodiment of the present utility model, by providing the above battery, while improving the space of the housing, a receiving chamber can also be provided inside the protective cover. The receiving chamber stores contents. During the later use of the battery, the receiving chamber releases the same or different contents into the housing through the weak part, so as to supplement lithium materials for the battery or reduce the temperature of the battery. On the basis of improving the battery's power storage capacity, the service life and safety of the battery can also be increased.

[0022] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0023] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is an exploded view of a battery according to some embodiments of the present utility model;

[0025] Figure 2 is a cross-sectional view of a battery according to some embodiments of the present utility model;

[0026] Figure 3 Schematic diagram of a protective cover according to some embodiments of the present utility model.

[0027] Reference numerals:

[0028] 100, battery; 101, battery cell; 102, tab; 103, housing;

[0029] 10, battery cover plate;

[0030] 1, cover plate body; 11, through hole; 12, mounting hole;

[0031] 2, protective cover; 21, receiving cavity; 22, flanging;

[0032] 3, lead-out piece; 31, lead-out piece body; 32, extension piece;

[0033] 4, accommodating bin; 41, first bin wall; 42, weak part; 5, pole column; 6, insulating part; 61, communication hole; 62, avoidance hole. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Reference is made below to Figures 1 - 3 describe the battery cover 10 according to an embodiment of the present utility model.

[0038] The battery cover 10 according to the first aspect embodiment of the present utility model, the battery cover 10 includes a cover body 1 and a protective cover 2. The cover body 1 has a through hole 11, and the through hole 11 penetrates the cover body 1 along the thickness direction of the cover body 1. The protective cover 2 is connected to the side of the cover body 1 facing away from the housing 103, that is, the protective cover 2 is connected to the outside of the cover body 1. The protective cover 2 has a receiving cavity 21, and the receiving cavity 21 communicates with the through hole 11. There is an electric core 101 in the housing 103, and the receiving cavity 21 can communicate with the electric core 101 through the through hole 11. At least one accommodating bin 4 is provided in the receiving cavity 21. It can be that one accommodating bin 4 is provided in the receiving cavity 21, or multiple accommodating bins 4 are provided in the receiving cavity 21. Contents are stored in the accommodating bin 4, and the bin wall of the accommodating bin 4 has a weak part 42, and the weak part 42 is used to release the contents towards the inside of the housing 103.

[0039] For example, the accommodating bin 4 can be a complete bin structure connected to the protective cover 2; the accommodating bin 4 can also be a bin structure jointly defined by the bin wall and the protective cover 2, and the side wall of the protective cover 2 is the bin wall of the accommodating bin 4.

[0040] The protective cover 2 is arranged on the outside of the battery cover 10, does not occupy the space inside the housing 103, does not affect the capacity of the electric core 101 of the battery 100, and at least one accommodating bin 4 is provided in the protective cover 2. Contents are filled in the accommodating bin 4. After the battery 100 is used for a period of time, the accommodating bin 4 releases the contents to the battery 100 through the weak part 42, which can improve the cycle life of the battery 100.

[0041] After the battery 100 is used for a period of time, gas will be generated inside the battery 100. The more gas there is, the greater the pressure inside the battery 100. A pressure difference is formed between the internal pressure of the accommodating bin 4 and the internal pressure of the housing 103. The internal pressure of the housing 103 is greater than the internal pressure of the accommodating bin 4, and the pressure difference can force the weak part 42 to open, and the contents in the accommodating bin 4 can be released towards the inside of the housing 103.

[0042] During the discharge process of the battery 100, a chemical reaction occurs inside the battery 100, generating heat energy, which causes the internal temperature of the battery 100 to rise. The high temperature causes the weak part 42 to melt, and the weak part 42 opens the accommodation chamber 4, and the contents in the accommodation chamber 4 can be released towards the inside of the housing 103; or after the internal temperature of the battery 100 rises, the weak part 42 is deformed, and the weak part 42 opens the accommodation chamber 4, and the contents in the accommodation chamber 4 can be released towards the inside of the housing 103.

[0043] For example, the contents can be lithium supplement materials, acid and water removal additives, or temperature reduction agents, etc. The lithium supplement materials can provide lithium elements for the battery 100, the temperature reduction agents can reduce the temperature of the battery 100, and the acid and water removal additives can remove the acid or water in the battery 100. The addition of lithium supplement materials can increase the capacitance of the battery 100, and the addition of temperature reduction agents and acid and water removal additives can improve the safety of the battery 100 during use, thereby extending the service life of the battery 100.

[0044] There can be one accommodation chamber 4, and one accommodation chamber 4 can selectively store lithium supplement materials, temperature reduction agents, or acid and water removal additives.

[0045] There can be multiple accommodation chambers 4. One accommodation chamber 4 can store lithium supplement materials, another accommodation chamber 4 can store temperature reduction agents, and another accommodation chamber 4 can store acid and water removal additives; all the accommodation chambers 4 can store lithium supplement materials; all the accommodation chambers 4 can store temperature reduction agents; or all the accommodation chambers 4 can store acid and water removal additives. Different numbers of accommodation chambers 4 are set according to the actual use of the battery 100, and the same or different contents are stored in multiple accommodation chambers 4 respectively to supplement lithium materials for the battery 100 or reduce the temperature of the battery 100, which can increase the service life and safety of the battery 100 on the basis of increasing the capacitance of the battery 100.

[0046] During the use of the battery 100, some lithium ions will be consumed, affecting the cycle life. After the battery 100 is used for a period of time, it is necessary to supplement lithium ions for the battery 100. The contents can be lithium supplement materials, such as lithium metal, Li 2 O, LiF, LiOH, Li 3 N, and Li 2 CO 3 and other lithium-rich compounds, or nanocomposites based on conversion reactions, binary lithium compounds, etc. After the battery 100 is used for a period of time, a pressure difference is formed between the internal pressure of the accommodation chamber 4 and the internal pressure of the housing 103. The internal pressure of the housing 103 is greater than the internal pressure of the accommodation chamber 4, and the pressure difference can force the weak part 42 to open, and the lithium supplement materials in the accommodation chamber 4 can be released into the housing 103 through the weak part 42 to provide lithium supplement materials for the battery cell 101.

[0047] During the use of the battery 100, hydrolysis reactions occur between the lithium salt and the moisture and acidic impurities in the electrolyte solution, generating strong acid substances. These strong acid substances react with the electrode active material and corrode the solid electrolyte interface, catalyzing the metal dissolution of metal-containing compounds such as lithium iron phosphate or lithium manganate, resulting in significant damage to the positive electrode. The dissolved metal elements will deposit on the negative electrode, further damaging the negative electrode and causing the SEI film on the surface of the negative electrode to be damaged, resulting in a decline in the cycling performance of the lithium-ion battery 100. The content can be an acid and water removal additive. For example, it can be p-toluenesulfonyl isocyanate (PTSI), dimethyldimethoxysilane (DODSi), N,N-dimethylformamide (DMF), nitrogen-containing compounds (such as triazine), metal-organic frameworks (MOF), etc. The acid and water removal additive can inhibit or remove strong acids and water, reduce the capacity attenuation of the battery 100, and thus improve the lifespan of the battery 100. After the battery 100 has been used for some time, a pressure difference is formed between the internal pressure of the accommodation chamber 4 and the internal pressure of the housing 103. The internal pressure of the housing 103 is greater than the internal pressure of the accommodation chamber 4, and the pressure difference can force the weak part 42 to open. The acid and water removal additive in the accommodation chamber 4 can be released into the housing 103 through the weak part 42, and the acid and water removal additive can inhibit or remove strong acids and water.

[0048] According to the battery cover 10 of the embodiment of the present utility model, a protective cover 2 is provided on the outer side of the cover body 1. The protective cover 2 does not occupy the space inside the housing 103 and will not affect the energy density of the battery cell 101. At least one accommodation chamber 4 is provided inside the protective cover 2, and the accommodation chamber 4 stores contents. During the later use of the battery 100, the accommodation chamber 4 releases the same or different contents into the housing 103 through the weak part 42. On the basis of improving the power storage capacity of the battery 100, the service life and safety of the battery 100 can also be increased.

[0049] According to some embodiments of the present utility model, referring to Figures 1 - 2 , a valve body is provided on the weak part 42. The valve body is used to open or close the accommodation chamber 4, and the valve body can control the closing or opening of the accommodation chamber 4. After the battery 100 has been used for some time, gases will be generated inside the battery 100. The more gases there are, the greater the pressure inside the battery 100. A pressure difference is formed between the accommodation chamber 4 and the housing 103, and the pressure difference can force the valve body to open. The contents in the accommodation chamber 4 can be released into the housing 103 through the valve body. For example, the valve body can be an explosion-proof valve, and the opening pressure of the explosion-proof valve is less than the opening pressure of the explosion-proof valve of the battery 100, and the internal pressure ≤ 0.1 Mpa.

[0050] Alternatively, a notch is provided on the weak part 42. Similarly, after the battery 100 is used for a period of time, a pressure difference is formed between the accommodation chamber 4 and the housing 103. The pressure difference can force the accommodation chamber 4 to crack at the notch, and the content in the accommodation chamber 4 can be released into the housing 103 through the crack.

[0051] By providing a valve body or a notch on the weak part 42, it is convenient for the weak part 42 to open the accommodation chamber 4.

[0052] According to some embodiments of the present invention, referring to Figures 1 - 2 , the accommodation chamber 4 is arranged adjacent to the through hole 11. After the weak part 42 opens the accommodation chamber 4, the path for the content to be released into the housing 103 can be shortened, and the content can be quickly released into the housing 103.

[0053] According to some embodiments of the present invention, referring to Figures 1 - 2 , the accommodation chamber 4 is a cuboid extending along the length direction of the protective cover 2, which can not only facilitate the processing and manufacturing of the protective cover 2, but also facilitate the assembly of the accommodation chamber 4 into the protective cover 2.

[0054] The accommodation chamber 4 has a first chamber wall 41 facing the through hole 11, and a weak part 42 is provided on the first chamber wall 41, so that the path for the content in the accommodation chamber 4 to be released into the housing 103 is the shortest.

[0055] According to some embodiments of the present invention, referring to Figures 1 - 2 , the accommodation chamber 4 is welded in the accommodation cavity 21, and the accommodation chamber 4 is welded to the protective cover 2, which can increase the stability of the accommodation chamber 4 fixed in the accommodation cavity 21. Alternatively, the accommodation chamber 4 is detachably installed in the accommodation cavity 21 through a snap structure, which can make the way of fixing the accommodation chamber 4 to the installation cavity simple and easy to operate. The snap structure can be a hook provided on the protective cover 2 and a convex provided on the accommodation chamber 4. For example, the accommodation chamber 4 can be fixedly connected to the side wall or the top wall of the protective cover 2.

[0056] According to some embodiments of the present invention, referring to Figures 1 - 2 , a first positioning part is provided on the cover body 1, and a second positioning part is provided on the protective cover 2. The second positioning part is in positioning cooperation with the first positioning part. When the protective cover 2 is installed on the cover body 1, the position of the protective cover 2 installed on the cover body 1 can be pre-determined through the positioning of the first positioning part and the second positioning part, which can improve the accuracy of the protective cover 2 installed on the cover body 1.

[0057] For example, the first positioning portion can be a positioning groove, and the second positioning portion can be a positioning protrusion that is positioned and cooperates with the positioning groove; or, the first positioning portion can be a positioning protrusion, and the second positioning portion can be a positioning groove that is positioned and cooperates with the positioning protrusion. For another example, the first positioning portion can be a first positioning hole, and the second positioning portion can be a second positioning hole that is positioned and cooperates with the first positioning hole.

[0058] According to some embodiments of the present invention, referring to Figures 1 - 2 , the first positioning portion includes an annular groove provided around the through hole 11, and the second positioning portion includes a flanging 22 on the circumferential side wall of the protective cover 2, and the flanging 22 extends in a direction away from the center of the protective cover 2. The flanging 22 is located in the annular groove, which can not only improve the accuracy of installing the protective cover 2 onto the cover body 1, but also increase the connection strength between the protective cover 2 and the cover body 1. For example, the flanging 22 can be fixedly welded to the cover body 1.

[0059] When the flanging 22 is located in the annular groove, the surface of the flanging 22 facing away from the housing 103 is flush with the surface of the cover body 1 facing away from the housing 103, preventing the flanging 22 from protruding from the annular groove, which can not only improve the aesthetics of the appearance of the battery 100, but also avoid the flanging 22 from scraping other components.

[0060] According to some embodiments of the present invention, referring to Figures 1 - 2 , the battery cover 10 further includes a pole post 5 and a lead-out piece 3. The pole post 5 is installed on the cover body 1, and the pole post 5 is spaced apart from the protective cover 2, and the pole post 5 is located outside the protective cover 2. The lead-out piece 3 is connected between the pole post 5 and the pole ear 102 for electrically connecting the pole post 5 and the pole ear 102. Among them, a part of the lead-out piece 3 is located in the accommodation cavity 21, which can save the space occupied by the lead-out piece 3 in the housing 103 and can improve the energy density of the battery cell 101 in the housing 103.

[0061] A part of the pole post 5 is located outside the cover body 1 for electrically connecting the pole ear 102 with other components. The pole post 5 occupies the space in the height direction outside the battery cover 10. Utilizing this part of the space, a protective cover 2 is provided outside the cover body 1, and the protective cover 2 does not additionally occupy the space in the height direction, and the space outside the battery cover 10 can be fully utilized.

[0062] According to some embodiments of the present invention, referring to Figures 1 - 2, the battery cover plate 10 further includes an insulating member 6. The insulating member 6 is disposed on the cover plate body 1. The insulating member 6 is used to prevent the lead-out piece 3 from moving towards the cover plate body 1. When the battery 100 shakes, the lead-out piece 3 will also shake. When the lead-out piece 3 shakes, the insulating member 6 will prevent the lead-out piece 3 from moving towards the cover plate body 1, avoiding contact between the lead-out piece 3 and the cover plate body 1. The insulating member 6 can insulate the lead-out piece 3 from the cover plate body 1, preventing the lead-out piece 3 from contacting the cover plate body 1 and causing a short circuit of the battery 100.

[0063] According to some embodiments of the present invention, referring to Figures 1 - 2 , the insulating member 6 is located on the side of the cover plate body 1 away from the protective cover 2. The insulating member 6 has a communication hole 61 disposed opposite to the through hole 11. The lead-out piece 3 passes through the communication hole 61 and the through hole 11. Among them, the inner side surface of the through hole 11 is located outside the inner side surface of the communication hole 61. When the lead-out piece 3 moves in the communication hole 61 and the through hole 11, the lead-out piece 3 faces the cover plate body 1, and the lead-out piece 3 will first contact the insulating member 6, avoiding the lead-out piece 3 contacting the cover plate body 1 and causing a short circuit of the battery 100.

[0064] The battery 100 according to the second aspect embodiment of the present invention includes a housing 103. The housing 103 has an opening. The battery cover plate 10 according to the first aspect embodiment of the present invention above. The battery cover plate 10 is connected to the housing 103 for closing the opening. The battery cover plate 10 can be welded to the opening of the housing 103.

[0065] The battery 100 according to the embodiment of the present invention, by providing the above battery cover plate 10, reasonably utilizes the space outside the cover plate body 1. A protective cover 2 is provided outside the cover plate body 1. Part of the lead-out piece 3 is located inside the protective cover 2, which can save the space of the housing 103 occupied by the lead-out piece 3 and can improve the energy density of the battery cell 101; at the same time, a storage bin 4 is provided inside the protective cover 2, reasonably utilizing the space of the protective cover 2. The storage bin 4 stores contents. During the later use of the battery 100, the storage bin 4 releases the same or different contents into the housing 103 through the weak part 42 to supplement lithium materials for the battery 100 or reduce the temperature of the battery 100. On the basis of improving the power storage capacity of the battery 100, the service life and safety of the battery 100 can also be increased.

[0066] According to some embodiments of the present invention, referring to Figures 1 - 2, the battery 100 includes a battery cell 101 and an electrode tab 102. The electrode tab 102 is located at the end of the battery cell 101, and a part of the electrode tab 102 is located within the receiving cavity 21, that is, a part of the electrode tab 102 extends into the receiving cavity 21 through the through hole 11. The battery cover plate 10 includes a terminal post 5 and a lead-out piece 3. The lead-out piece 3 includes a lead-out piece body 31 and an extension piece 32 arranged at an angle. The extension piece 32 is located within the receiving cavity 21 and is connected to the electrode tab 102, which can save the space within the housing 103 occupied when the electrode tab 102 is connected to the extension piece 32, can improve the energy density of the battery 100, and can avoid the problem of bending of the electrode tab 102 at the same time. The lead-out piece body 31 is connected to the terminal post 5. An installation hole 12 spaced apart from the protective cover 2 is further provided on the cover plate body 1, and the terminal post 5 passes through the installation hole 12 and is connected to the lead-out piece body 31. For example, the angle between the lead-out piece body 31 and the extension piece 32 is a right angle.

[0067] An insulating member 6 is further provided between the cover plate body 1 and the lead-out piece 3. The insulating member 6 is provided with an avoidance hole 62 communicating with the installation hole 12, and the terminal post 5 also passes through the avoidance hole 62. A sealing ring is further provided between the cover plate body 1 and the terminal post 5, and the sealing ring is made of plastic material, which can not only play a role in sealing the terminal post 5, but also insulate the terminal post 5 from the cover plate body 1.

[0068] According to some embodiments of the present invention, referring to Figures 1 - 2 , a circular recessed portion is provided on one side of the outer peripheral edge of the cover plate body 1 facing the housing 103, and the side wall of the housing 103 is installed within the circular recessed portion. By providing the circular recessed portion on the outer peripheral edge of the cover plate body 1, it not only plays a role in pre-positioning the installation positions of the cover plate body 1 and the housing 103, but also can increase the connection area between the cover plate body 1 and the housing 103, and further can increase the firmness of the cover plate body 1 installed on the housing 103.

[0069] For example, the circular recessed portion penetrates through the outer peripheral edge of the cover plate body 1, and in the circumferential direction of the battery 100, the outer side surface of the cover plate body 1 is flush with the outer side surface of the housing 103, avoiding the protrusion of the outer edge of the cover plate body 1, which can make the appearance of the battery 100 more beautiful and avoid scratching other components by the outer edge of the cover plate body 1 at the same time.

[0070] An electrical equipment according to the third aspect embodiment of the present invention includes: the battery 100 according to the second aspect embodiment of the present invention as described above.

[0071] According to the electrical equipment of the embodiment of the present utility model, by arranging the above-mentioned battery 100, while improving the space of the housing 103, a storage bin 4 can also be arranged in the protective cover 2, and the storage bin 4 stores contents. During the later use of the battery 100, the storage bin 4 releases the same or different contents into the housing 103 through the weak part 42 to supplement lithium materials for the battery 100 or reduce the temperature of the battery 100. On the basis of improving the power storage capacity of the battery 100, the service life and safety of the battery 100 can also be increased.

[0072] In the description of this specification, the description with reference to terms such as "some embodiments", "optionally", "further" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0073] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery cover, characterized in that: include: A cover plate body, wherein the cover plate body has a through hole; A protective cover, the protective cover is connected to a side of the cover body facing away from the shell, and the protective cover has an accommodating cavity communicated with the through hole; At least one accommodating bin is disposed in the accommodating cavity, the accommodating bin is suitable for storing contents, and a bin wall of the accommodating bin has a weak portion for releasing the contents.

2. The battery cover according to claim 1, characterized in that: A valve body is provided on the weak portion, and the valve body is used to open or close the accommodating chamber; and / or a notch is provided on the weak portion.

3. The battery cover according to claim 1, characterized in that: The accommodating bin is disposed adjacent to the through hole.

4. The battery cover according to claim 1, characterized in that: The accommodating bin is a cuboid extending along the length direction of the protective cover. The accommodating bin has a first bin wall disposed toward the through hole, and the weak portion is disposed on the first bin wall.

5. The battery cover according to claim 1, characterized in that: The accommodating bin is welded in the accommodating cavity, or the accommodating bin is detachably installed in the accommodating cavity via a snap-fit ​​structure.

6. The battery cover according to claim 1, characterized in that: The cover plate body is provided with a first positioning portion, and the protection cover is provided with a second positioning portion that is positioned and matched with the first positioning portion.

7. The battery cover according to claim 6, characterized in that: The first positioning portion includes an annular groove arranged around the through hole, and the second positioning portion includes a flange on the circumferential side wall of the protective cover.

8. The battery cover according to claim 1, characterized in that: It also includes a pole and a lead-out piece, wherein the pole is mounted on the cover body and is spaced apart from the protective cover, and the lead-out piece is connected between the pole and the pole ear, wherein a portion of the lead-out piece is located in the accommodating cavity.

9. The battery cover according to claim 8, characterized in that: The battery cover plate further comprises an insulating member, which is disposed on the cover plate body and is used to prevent the lead-out piece from moving toward the cover plate body.

10. The battery cover according to claim 9, characterized in that: The insulating member is located on a side of the cover plate body away from the protective cover, and the insulating member has a connecting hole arranged opposite to the through hole, and the lead-out piece is passed through the connecting hole and the through hole, wherein the inner side surface of the through hole is located outside the inner side surface of the connecting hole.

11. A battery, characterized in that: include: a housing having an opening; The battery cover according to any one of claims 1 to 10, wherein the battery cover is connected to the shell and is used to close the opening.

12. The battery according to claim 11, characterized in that The battery includes a battery cell, a lead-out plate and a pole ear located at the end of the battery cell, wherein a portion of the pole ear is located in the accommodating cavity, the battery cover includes a pole, the lead-out plate includes a lead-out plate body and an extension plate arranged at an angle, the extension plate is located in the accommodating cavity and connected to the pole ear, and the lead-out plate body is connected to the pole.

13. The battery according to claim 11, characterized in that An annular recessed portion is provided on a side of the outer periphery of the cover body facing the shell, and the side wall of the shell is installed in the annular recessed portion.

14. An electrical device, characterized in that: include: The battery according to any one of claims 11 to 13.

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