Battery

Abstract

In order to solve the problems that when an existing battery is extruded, electronic components are easy to damage, and the disassembly process steps are complex, the utility model provides a battery. Comprising a battery cell, a circuit board and a supporting piece, one end of the battery cell is provided with the supporting piece, and the supporting piece is provided with a through hole; the circuit board is electrically connected with the battery cell, the circuit board comprises a substrate and an electronic component, the substrate is arranged on the side, away from the battery cell, of the supporting piece, the side, facing the battery cell, of the substrate abuts against the supporting piece, and the electronic component is arranged on one side of the substrate and located in the through hole. According to the battery provided by the invention, the electronic component is arranged in the through hole, so that the electronic component is prevented from being damaged when the battery is extruded; the base plate is arranged on the side, away from the battery cell, of the supporting piece, when the PCBA board is damaged, the PCBA board can be directly detached, the supporting piece does not need to be detached, the detaching working steps are reduced, detaching is convenient, and meanwhile the recycling cost of the battery is reduced.

Description

Technical Field

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

[0002] Regulation (EU) 2023 / 1542 of the European Parliament and of the Council on batteries and waste batteries amends Directive 2008 / 98 / EC and Regulation (EU) 2019 / 1020, and repeals Directive 2006 / 66 / EC. It will officially come into effect on August 17, 2023. In order to further achieve low-carbon goals, the new EU regulations also require that lithium batteries must be removable starting in 2027, allowing end consumers to replace batteries without using special tools.

[0003] Lithium battery is an important energy source, and has made certain contributions to sustainable development, green transportation and clean energy. Existing batteries have the following structure: the battery includes a battery cell, a PCBA board (printed circuit board) and a nickel sheet. The PCBA board is arranged at one end of the battery cell, and the PCBA board is electrically connected to the battery cell through the nickel sheet. The PCBA board includes a substrate, and electronic components are arranged on the side of the substrate close to the battery cell. Since electronic components are arranged on the substrate, the electronic components are easily damaged when the battery is squeezed; in order to protect the electronic components, some PCBA boards are placed in protective gaskets. Although this structure can protect the PCBA board, when the electronic components are damaged and need to be replaced, the protective gasket and the PCBA board need to be removed at the same time. The disassembly process is complicated, which greatly affects the recycling and reuse of the battery. Utility Model Content

[0004] The utility model aims to solve the problems that electronic components of existing batteries are easily damaged when squeezed and the disassembly process is complicated. The application provides a battery.

[0005] The present application provides a battery, comprising a battery cell, a circuit board and a support member, wherein the support member is provided at one end of the battery cell, and the support member is provided with a through hole;

[0006] The circuit board is electrically connected to the battery cell, and includes a substrate and electronic components. The substrate is arranged on a side of the support member away from the battery cell, and the side of the substrate facing the battery cell is in contact with the support member. The electronic components are arranged on one side of the substrate and located in the through hole.

[0007] Preferably, the circuit board further comprises a positive output terminal, a negative output terminal and a negative temperature coefficient thermistor;

[0008] The positive output terminal, the negative output terminal and the negative temperature coefficient thermistor are all arranged on a side of the substrate away from the battery cell.

[0009] Preferably, the negative output terminal, the positive output terminal and the negative temperature coefficient thermistor are all arranged in a ring shape, and the negative output terminal is arranged on the periphery of the positive output terminal of the negative temperature coefficient thermistor and the negative output terminal is arranged on the periphery of the negative temperature coefficient thermistor.

[0010] Preferably, the battery further includes a positive electrode connector and a negative electrode connector, the battery cell includes a positive terminal and a negative terminal, the positive electrode connector is connected between the positive electrode port of the circuit board and the positive terminal of the battery cell, and the negative electrode connector is connected between the negative electrode port of the circuit board and the negative terminal of the battery cell.

[0011] Preferably, the positive electrode port and the negative electrode port are both arranged on the side of the substrate facing the battery cell, the end of the positive electrode connector away from the battery cell is arranged between the substrate and the support member, and the end of the negative electrode connector away from the battery cell is arranged between the substrate and the support member.

[0012] Preferably, the positive electrode connector and the negative electrode connector are both nickel strips or nickel bars.

[0013] Preferably, the positive electrode connector and the negative electrode connector each include a first connecting segment, a second connecting segment and a third connecting segment, wherein the third connecting segment is connected between the first connecting segment and the second connecting segment.

[0014] The first connecting section is disposed between the substrate and the supporting member, and the second connecting section is connected to the battery core.

[0015] Preferably, the battery further comprises an insulating member, the insulating member comprises a first insulating member and a second insulating member, the first insulating member is arranged between the battery cell and the support member, and the first insulating member is arranged on a side of the positive electrode connector away from the battery cell;

[0016] The second insulating member is disposed on a side of the negative electrode connector away from the negative terminal.

[0017] Preferably, the battery further comprises a protective member, which is sleeved on the outer periphery of the battery cell and wraps the positive electrode connector, the negative electrode connector, the insulating member, the circuit board and the supporting member.

[0018] Preferably, the support member is a silicone sleeve or an EVA sleeve.

[0019] Compared with the prior art, the battery provided by the present application has electronic components arranged in the through-holes, which plays a role in protecting the electronic components, preventing the electronic components from being damaged when the battery is squeezed, avoiding the external force-bearing electronic components from directly acting on the insulating gasket, and ensuring the flatness of the structure after the battery is assembled, avoiding the different heights of different electronic components causing the PCBA output terminal P + , P - Or the NTC and the whole equipment have poor contact; the substrate is set on the side of the support away from the battery cell. When the PCBA board is damaged, the PCBA board can be directly disassembled without disassembling the support, which reduces the disassembly steps and facilitates disassembly, while also reducing the cost of battery recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded diagram of a battery provided by an embodiment of the utility model;

[0021] Figure 2 This is a top view of a battery provided by one embodiment of the utility model;

[0022] Figure 3 It is a cross-sectional view of a battery provided by one embodiment of the utility model.

[0023] 1. Battery cell; 2. Circuit board; 201. Electronic components; 202. Substrate; 203. Positive output terminal; 204. Negative output terminal; 205. Negative temperature coefficient thermistor; 3. Support member; 301. Through hole; 4. Positive connector; 5. Negative connector; 6. Insulator; 601. First insulating member; 602. Second insulating member; 7. Protective member. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] In order to illustrate the technical solution of the present utility model, specific embodiments are provided below for illustration.

[0026] like Figure 1-Figure 3 As shown, an embodiment of the present application provides a battery, comprising a battery cell 1, a circuit board 2 and a support member 3, wherein the support member 3 is disposed at one end of the battery cell 1, and the support member 3 is provided with a through hole 301;

[0027] The circuit board 2 is electrically connected to the battery cell 1, and the circuit board 2 includes a substrate 202 and an electronic component 201. The substrate 202 is arranged on a side of the support 3 away from the battery cell 1, and the side of the substrate 202 facing the battery cell 1 is abutted against the support 3. The electronic component 201 is arranged on one side of the substrate 202 and is located in the through hole 301.

[0028] Specifically, the battery cell 1 is a cylindrical lithium-ion battery cell 1, and can be made into sizes of different heights and diameters, such as 10440, 11390, 14500, 14650, 18500, 18650, 21700, 46800, etc. The battery cell 1 is a device containing lithium ions that can directly convert chemical energy into electrical energy. The device includes components such as electrodes, diaphragms, electrolytes, steel shells, caps, etc., and can be rechargeable.

[0029] Specifically, the circuit board 2 includes a PCBA board, which is also called a printed circuit board 2. The PCBA is a circuit board 2 that covers protection functions such as overcharge protection, over-discharge protection, discharge overcurrent, charge overcurrent, short circuit, etc. It is conventionally composed of a lithium-ion battery protection IC, a MOSFET tube, and resistors and capacitors used in conjunction with it. A composite IC or other device components that realize specific functions can also be directly used. The PCBA board structure in the battery provided in the present application is divided into two sides. One side has all components SMT in the through hole 301 of the support 3, and the other side is designed to be a concentric ring or other shape of output polarity P + \P - \NTC, and provide energy endurance and signal feedback to the whole device. P+ refers to the positive output terminal 203, P - refers to the negative output terminal 204; NTC refers to the negative temperature coefficient thermistor 205.

[0030] The support member 3 is provided with a through hole 301, and the electronic component 201 is arranged in the through hole 301. The through hole 301 is used to avoid the components of the PCBA, to prevent the external force electronic component 201 from directly acting on the insulating gasket, and to ensure the flatness of the structure after the battery is assembled, to avoid the different heights of different electronic components 201 causing the PCBA output terminal P + , P - Or the NTC and the whole equipment have poor contact.

[0031] The substrate 202 is arranged on the side of the support member 3 away from the battery cell 1, and the substrate 202 abuts against the side of the support member 3 away from the battery cell 1. When the PCBA board is damaged, the PCBA board can be directly disassembled without disassembling the support member 3, thereby reducing the disassembly steps, facilitating disassembly, and reducing the battery recycling cost.

[0032] The battery provided in the present application has an electronic component 201 disposed in the through hole 301, which plays a role in protecting the electronic component 201, preventing the electronic component 201 from being damaged when the battery is squeezed, avoiding the external force of the electronic component 201 directly acting on the insulating gasket, and ensuring the flatness of the structure after the battery is assembled, avoiding the different heights of different electronic components 201 resulting in the PCBA output terminal P + , P - Or the NTC and the whole equipment have poor contact; the substrate 202 is arranged on the side of the support 3 away from the battery cell 1. When the PCBA board is damaged, the PCBA board can be directly disassembled without disassembling the support 3, which reduces the disassembly steps and facilitates disassembly, while also reducing the battery recycling cost.

[0033] In some embodiments, the circuit board 2 further includes a positive output terminal 203, a negative output terminal 204 and a negative temperature coefficient thermistor 205;

[0034] The positive output terminal 203 , the negative output terminal 204 , and the negative temperature coefficient thermistor 205 are all arranged on a side of the substrate 202 away from the battery cell 1 .

[0035] Specifically, the positive output terminal 203, the negative output terminal 204, and the negative temperature coefficient thermistor 205 of the existing PCBA board are arranged on the side of the substrate 202 close to the battery cell 1, and need to be led out using a wire, which is complicated to set up and has high cost; while the PCBA board in the battery provided by the present application, the positive output terminal 203, the negative output terminal 204, and the negative temperature coefficient thermistor 205 of the PCBA board are arranged on the side of the substrate 202 away from the battery cell 1, which is convenient for connection with an external power supply; at the same time, if the positive output terminal 203, the negative output terminal 204 or the negative temperature coefficient thermistor 205 is damaged, it is convenient to disassemble and replace.

[0036] In some embodiments, the negative output terminal 204, the positive output terminal 203 and the negative temperature coefficient thermistor 205 are all arranged in a ring shape;

[0037] The negative temperature coefficient thermistor 205 is disposed at the periphery of the positive output terminal 203 , and the negative output terminal 204 is disposed at the periphery of the negative temperature coefficient thermistor 205 .

[0038] Specifically, Figure 2 As shown, the negative output terminal 204, the positive output terminal 203 and the negative temperature coefficient thermistor 205 are all arranged in a ring shape to reduce the space occupied by the substrate 202. The ring shape can be circular or elliptical.

[0039] It should be noted that the negative output terminal 204, the positive output terminal 203 and the negative temperature coefficient thermistor 205 may also be in other shapes, such as a polygonal arrangement, such as a quadrilateral, a pentagon, an octagon, etc.

[0040] In some preferred embodiments, the negative output terminal 204, the positive output terminal 203 and the negative temperature coefficient thermistor 205 are arranged in a concentric ring shape.

[0041] The concentric ring setting can reduce the length of the electrical wiring of the entire equipment, effectively reduce impedance, streamline the structure, and the output on the same side can be disassembled and replaced by the end consumer.

[0042] In some embodiments, the battery also includes a positive electrode connector 4 and a negative electrode connector 5, the battery cell 1 includes a positive terminal and a negative terminal, the positive electrode connector 4 is connected between the positive electrode port of the circuit board 2 and the positive terminal of the battery cell 1, and the negative electrode connector 5 is connected between the negative electrode port of the circuit board 2 and the negative terminal of the battery cell 1.

[0043] Specifically, the positive electrode connector 4 and the negative electrode connector 5 are mainly used to electrically connect the battery cell 1 to the PCBA board. It should be noted that the positive terminal and the negative terminal of the battery cell 1 can be arranged at the same end of the battery cell 1, or the positive terminal and the negative terminal are not arranged at the same end of the battery cell 1; for example, the positive terminal is arranged at the top of the battery cell 1, and the negative terminal is arranged at the bottom of the battery cell 1.

[0044] It should be noted that the positive electrode port and the negative electrode port are ports connected to the battery cell 1 , rather than ports connected to an external power source.

[0045] In some embodiments, the positive electrode port and the negative electrode port are both arranged on the side of the substrate 202 facing the battery cell 1, the end of the positive electrode connector 4 away from the battery cell 1 is arranged between the substrate 202 and the support 3, and the end of the negative electrode connector 5 away from the battery cell 1 is arranged between the substrate 202 and the support 3.

[0046] Specifically, Figure 1 , 3 As shown, the positive electrode port and the negative electrode port are arranged on the side of the substrate 202 facing the battery cell 1, which plays a role in protecting the positive electrode port and the negative electrode port, and also protects the positive electrode connector 4 and the negative electrode connector 5.

[0047] It can be understood that the positive port and the negative port can be set in the through hole 301 of the support member 3, and the support member 3 plays a role in protecting the positive port and the negative port; or the positive port and the negative port are not set in the through hole 301, but are set between the support member 3 and the substrate 202. The support member 3 also has a certain elastic material, and when the PCBA board is squeezed, it can also play a role in protecting the positive port and the negative port.

[0048] In some embodiments, the positive electrode connector 4 and the negative electrode connector 5 are both nickel strips or nickel bars.

[0049] Specifically, the nickel strip or nickel bar is convenient for welding and reduces the difficulty of welding. The nickel strip or nickel bar is generally composed of pure nickel strip.

[0050] It should be noted that the thickness and width of the nickel ribbon or strip can be determined according to the current used in the battery.

[0051] In some embodiments, the positive electrode connector 4 and the negative electrode connector 5 each include a first connecting segment, a second connecting segment and a third connecting segment, wherein the third connecting segment is connected between the first connecting segment and the second connecting segment.

[0052] The first connecting section is disposed between the substrate 202 and the support member 3 , and the second connecting section is connected to the battery core 1 .

[0053] Specifically, Figure 1 As shown, the positive electrode connector 4 includes a first connecting segment, a second connecting segment and a third connecting segment, and the negative electrode connector 5 includes a first connecting segment, a second connecting segment and a third connecting segment. The first connecting segment and the second connecting segment are both perpendicular to the third connecting segment. It should be noted that the specific structure of the first connecting segment, the second connecting segment and the third connecting segment is related to the structure of the battery cell 1. For example, when the battery cell 1 is a steel shell battery, the first connecting segment and the second connecting segment are both perpendicular to the third connecting segment. When the battery cell 1 is other special-shaped batteries, the positional relationship between the first connecting segment, the second connecting segment and the third connecting segment changes according to the structure of the special-shaped battery.

[0054] Taking the positive electrode connector 4 as an example, the first connection segment is defined as the positive electrode first connection segment, the second connection segment is defined as the positive electrode second connection segment, and the connection relationship thereof is specifically described. The end of the positive electrode first connection segment away from the third connection segment is connected to the positive electrode port of the PCBA board, and the end of the positive electrode second connection segment away from the third connection segment is connected to the positive terminal of the battery cell 1. Similarly, for the negative electrode connector 5, the first connection segment is defined as the negative electrode first connection segment, the second connection segment is defined as the negative electrode second connection segment, and the connection relationship thereof is specifically described. The end of the negative electrode first connection segment away from the third connection segment is connected to the negative electrode port of the PCBA board, and the end of the negative electrode second connection segment away from the third connection segment is connected to the negative terminal of the battery cell 1.

[0055] In some embodiments, the battery further includes an insulating member 6, the insulating member 6 includes a first insulating member 601 and a second insulating member 602, the first insulating member 601 is disposed between the battery cell 1 and the support member 3, and the first insulating member 601 is disposed on a side of the positive electrode connector 4 away from the battery cell 1;

[0056] The second insulating member 602 is disposed on a side of the negative electrode connector 5 away from the negative terminal.

[0057] Specifically, the insulating member 6 plays an insulating role. The first insulating member 601 is disposed between the battery cell 1 and the support member 3 to prevent the positive terminal of the battery cell 1 from contacting and short-circuiting with the negative terminal in the PCBA board.

[0058] The second insulating member 602 prevents the negative terminal of the battery cell 1 or the negative electrode connector 5 from being short-circuited with the external power source.

[0059] The insulating member 6 is a circular structure made of highland barley paper or red steel paper, which is consistent with the diameter of the battery cell 1. It mainly insulates the positive electrode cap, the positive electrode connector 4 and the electronic components 201 of the PCBA at the positive end of the battery cell 1 to prevent circuit short circuit and effectively realize electrical protection of the battery cell 1.

[0060] In some embodiments, the battery further includes a protective member 7 , which is sleeved on the outer periphery of the battery cell 1 and wraps the positive electrode connector 4 , the negative electrode connector 5 , the insulating member 6 , the circuit board 2 and the support member 3 .

[0061] Specifically, Figure 1 As shown, the protective member 7 is the outer protective cover of the battery, which has the functions of insulation and protection; the insulation mainly prevents the battery from short circuiting, and the protection mainly plays the role of protecting the positive electrode connector 4, the negative electrode connector 5, the insulating member 6, the circuit board 2 and the support member 3.

[0062] The outer protective cover effectively wraps the battery cell 1, the nickel strip, and the PCBA, so that the entire battery pack structure is organized, and the battery information, such as model, capacity, power, etc., can be marked.

[0063] The outer protective sleeve can be a heat shrink sleeve, a silk-screen sleeve or other PET film sleeve.

[0064] In some embodiments, the support member 3 is a silicone sleeve or an EVA sleeve.

[0065] Specifically, the support member 3 must have a certain structural strength to play a supporting role; the support member 3 may be a silicone sleeve or an EVA sleeve.

[0066] In some embodiments, the cross-section of the support member 3 is an annular structure or a polygonal structure.

[0067] The battery provided in the present application leads the positive terminal and the negative terminal of the battery cell 1 to the PCBA end through the positive connector 4 and the negative connector 5, and realizes the positive and negative electrodes output on the same side on the exposed side of the PCBA, in addition to realizing the protection function of the battery cell 1 to avoid overcharging and over-discharging; at the same time, the negative output terminal 204, the positive output terminal 203 and the negative temperature coefficient thermistor 205 are output on the same side in a concentric ring or specific shape output mode, which can reduce the electrical wiring length of the whole equipment, effectively reduce the impedance, and reorganize the structure. The same-side output can be disassembled and replaced by the end consumer.

[0068] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the utility model, and should be included in the protection scope of the utility model.

Claims

1. A battery, characterized in that: It comprises a battery cell (1), a circuit board (2) and a support member (3), wherein the support member (3) is arranged at one end of the battery cell (1), and the support member (3) is provided with a through hole (301); The circuit board (2) is electrically connected to the battery cell (1); the circuit board (2) comprises a substrate (202) and an electronic component (201); the substrate (202) is arranged on a side of the support member (3) away from the battery cell (1), and a side of the substrate (202) facing the battery cell (1) abuts against the support member (3); and the electronic component (201) is arranged on one side of the substrate (202) and is located in the through hole (301).

2. The battery according to claim 1, characterized in that The circuit board (2) further comprises a positive output terminal (203), a negative output terminal (204) and a negative temperature coefficient thermistor (205); The positive electrode output terminal (203), the negative electrode output terminal (204) and the negative temperature coefficient thermistor (205) are all arranged on a side of the substrate (202) away from the battery core (1).

3. The battery according to claim 2, characterized in that The negative output terminal (204), the positive output terminal (203) and the negative temperature coefficient thermistor (205) are all arranged in a ring shape; the negative temperature coefficient thermistor (205) is located at the periphery of the positive output terminal (203), and the negative output terminal (204) is located at the periphery of the negative temperature coefficient thermistor (205).

4. The battery according to claim 1, characterized in that The battery further comprises a positive electrode connector (4) and a negative electrode connector (5), the battery cell (1) comprises a positive terminal and a negative terminal, the positive electrode connector (4) is connected between the positive electrode port of the circuit board (2) and the positive terminal of the battery cell (1), and the negative electrode connector (5) is connected between the negative electrode port of the circuit board (2) and the negative terminal of the battery cell (1).

5. The battery according to claim 4, characterized in that The positive electrode port and the negative electrode port are both arranged on a side of the substrate (202) facing the battery cell (1); an end of the positive electrode connector (4) away from the battery cell (1) is arranged between the substrate (202) and the support member (3); and an end of the negative electrode connector (5) away from the battery cell (1) is arranged between the substrate (202) and the support member (3).

6. The battery according to claim 4, characterized in that The positive electrode connector (4) and the negative electrode connector (5) are both nickel strips or nickel bars.

7. The battery according to claim 4, characterized in that The positive electrode connector (4) and the negative electrode connector (5) both comprise a first connecting segment, a second connecting segment and a third connecting segment, wherein the third connecting segment is connected between the first connecting segment and the second connecting segment. The first connecting section is arranged between the substrate (202) and the support member (3), and the second connecting section is connected to the battery core (1).

8. The battery according to claim 4, characterized in that The battery further comprises an insulating member (6), the insulating member (6) comprising a first insulating member (601) and a second insulating member (602), the first insulating member (601) being arranged between the battery cell (1) and the support member (3), and the first insulating member (601) being arranged on a side of the positive electrode connector (4) facing away from the battery cell (1); The second insulating member (602) is arranged on a side of the negative electrode connector (5) facing away from the negative terminal.

9. The battery according to claim 8, characterized in that The battery further comprises a protective member (7), wherein the protective member (7) is sleeved on the outer periphery of the battery cell (1) and wraps the positive electrode connector (4), the negative electrode connector (5), the insulating member (6), the circuit board (2) and the supporting member (3).

10. The battery according to claim 1, characterized in that The support member (3) is a silicone sleeve or an EVA sleeve.

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