Battery assembly and electronic equipment

Abstract

The utility model discloses a battery assembly and an electronic device, the battery assembly comprises a packaging piece, a conductive connecting sheet, a battery and a circuit board, the battery and the circuit board are opposite, the battery is connected with the circuit board through the conductive connecting sheet, one end of the conductive connecting sheet is provided with a first bending portion, and the circuit board is provided with an opening. One end of the conductive connecting piece is provided with a first bending part, the first bending part penetrates through the opening and abuts against the side face, away from the battery, of the circuit board, the other end of the conductive connecting piece is provided with a second bending part, the second bending part abuts against the side face, away from the circuit board, of the battery, and the packaging piece wraps the conductive connecting piece, the battery and the circuit board. According to the utility model, the first bending part and the second bending part are respectively clamped on the opposite side surfaces of the battery and the circuit board, so as to improve the tensile resistance of the conductive connecting sheet, thereby improving the connection stability of the conductive connecting sheet, and the packaging piece is encapsulated outside the battery and the circuit board, thereby improving the reliability of the battery and the circuit board. Moisture-proof and shock-proof protection is carried out on the whole battery assembly, so that the battery assembly is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the field of electronic equipment, in particular to a battery assembly and electronic equipment. Background Art

[0002] As a commonly used power supply product, batteries have a particularly wide range of applications. Currently, batteries are also used to power rotating equipment. For example, in the tire pressure monitoring system of a vehicle tire, button batteries are generally used to power the tire pressure monitoring system. In the prior art, the tire pressure monitoring system mainly includes a housing, a circuit board disposed in the housing, and a button battery. The positive and negative electrodes of the button battery are both connected to conductive connecting pieces, and the two conductive connecting pieces are respectively welded to the circuit board. However, as the vehicle is driving, the tire pressure monitoring system will rotate at high speed with the tires. The centrifugal force generated by the rotation will cause the battery to expand and squeeze the conductive connecting piece, so that the conductive connecting piece has a tendency to move in a direction away from the circuit board, which can easily cause the conductive connecting piece to fall off the circuit board, resulting in the button battery being unable to provide power. Utility Model Content

[0003] One purpose of an embodiment of the utility model is to provide a battery assembly with a simple structure and capable of improving the connection stability of a conductive connecting sheet.

[0004] Another purpose of the embodiment of the utility model is to provide an electronic device with stable power supply, good performance and long service life.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, a battery assembly is provided, comprising a packaging component, a conductive connecting sheet, and a battery and a circuit board arranged opposite to each other, wherein the battery is connected to the circuit board via the conductive connecting sheet, a first bending portion is provided at one end of the conductive connecting sheet, an opening is provided on the circuit board, the first bending portion passes through the opening and abuts against a side of the circuit board facing away from the battery, a second bending portion is provided at the other end of the conductive connecting sheet, the second bending portion abuts against the side of the battery facing away from the circuit board, and the packaging component is wrapped around the outside of the conductive connecting sheet, the battery and the circuit board.

[0007] As a preferred solution of the battery assembly, the battery and the circuit board are spaced apart and form an escape space, and the escape space is used to accommodate electrical components on the circuit board.

[0008] As a preferred solution of the battery assembly, the conductive connecting sheet further comprises a first connecting sheet and a second connecting sheet, the circuit board is provided with two openings, and the first bent portions of the first connecting sheet and the second connecting sheet respectively pass through the two openings and abut against the side of the circuit board away from the battery;

[0009] The battery has a first side facing away from the circuit board and a second side facing the circuit board, one of the first side and the second side is the positive electrode of the battery, and the other of the first side and the second side is the negative electrode of the battery, the second bent portion of the first connecting piece abuts against the first side, and the second bent portion of the second connecting piece is arranged in the avoidance space and connected to the second side.

[0010] As a preferred solution of the battery assembly, the distance H between the battery and the circuit board is 0.2 mm to 1 mm.

[0011] As a preferred solution of the battery assembly, the first connecting piece includes a main body, two ends of the main body are respectively connected with the first bending portion and the second bending portion at an angle, and the main body and the battery are spaced apart.

[0012] As a preferred solution of the battery assembly, an insulating member is provided between the main body and the battery.

[0013] As a preferred solution of the battery assembly, the first bent portion is welded to the circuit board;

[0014] The surface of the first bending portion is provided with a nickel plating layer and a tin plating layer in sequence from the inside to the outside, or the surface of the first bending portion is provided with a nickel plating layer, a copper plating layer and a tin plating layer in sequence from the inside to the outside,

[0015] A solder layer is arranged on the circuit board, and the tin-plated layer is connected to the solder layer.

[0016] As a preferred solution of the battery assembly, the first bent portion is connected, welded or bonded to the circuit board via a fastener;

[0017] And / or, the second bent portion is connected, welded or bonded to the battery via the fastener.

[0018] In a second aspect, an electronic device is provided, comprising a device body and the battery assembly described above, wherein the battery assembly is used to provide electrical energy to the device body.

[0019] As a preferred solution of the electronic device, the electronic device has a rotation center line, the battery of the battery assembly is adjacent to the rotation center line, and the circuit board of the battery assembly is far away from the rotation center line.

[0020] The beneficial effects of the present utility model are as follows: The first bending part and the second bending part at both ends of at least one conductive connecting piece are bent towards the same side to form a "C" - shaped structure, so that the first bending part and the second bending part can be respectively clamped on the opposite sides of the battery and the circuit board. When the battery assembly rotates to generate centrifugal force, the battery will squeeze and press tightly against the first bending part in the direction away from the circuit board, making it difficult for the first bending part to fall off the battery. At the same time, it can also make the second bending part more tightly attached to the side of the circuit board away from the battery, and the second bending part is also not easy to脱离 the battery. Compared with the prior art of directly welding the conductive connecting piece on the side of the circuit board facing the battery, the present utility model improves the tensile resistance of the conductive connecting piece by respectively clamping the first bending part and the second bending part on the opposite sides of the battery and the circuit board, thereby improving the connection stability of the conductive connecting piece;

[0021] Moreover, after the battery is connected to the circuit board through the conductive connecting piece to form an integral body, the integral body is further potted by a potting member to insulate and seal the integral body. It can not only play a role in waterproofing and moisture - proofing, preventing the battery from leaking due to moisture or water ingress, but also play a role in shock - proof protection, preventing other components of the conductive connecting piece or the battery assembly from loosening due to vibration and causing failures, making the battery assembly more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0023] Figure 1 It is a cross - sectional view of the battery assembly according to the embodiment of the present utility model.

[0024] Figure 2 It is a connection schematic diagram of the battery, the conductive connecting piece and the circuit board according to the embodiment of the present utility model.

[0025] Figure 3 It is a structural schematic diagram of the electronic device installed on the rotating device according to the embodiment of the present utility model.

[0026] In the figure:

[0027] 1. Battery; 101. First side; 102. Second side; 2. Circuit board; 3. Conductive connecting piece; 31. First connecting piece; 32. Second connecting piece; 301. First bending part; 302. Second bending part; 303. Main body part; 4. Potting member; 5. Avoidance space; 6. Outer shell;

[0028] 100. Battery assembly; 200. Rotating device; 300. Rotation central axis. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] It should be noted that the original text has some unclear expressions (such as "第二折弯部也不易脱离电池" where "脱离" may be an incorrect or incomplete word). The above translation is based on the best understanding of the overall context.To make the technical problems solved, the technical solutions adopted, and the achieved technical effects of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may 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.

[0031] As Figure 1 and Figure 2 shown, a battery assembly 100 provided by the present utility model includes a conductive connection piece 3 and a battery 1 and a circuit board 2 arranged oppositely. The battery 1 is connected to the circuit board 2 through the conductive connection piece 3. One end of the conductive connection piece 3 is provided with a first bending part 301. An opening is provided on the circuit board 2. The first bending part 301 passes through the opening and abuts against the side surface of the circuit board 2 facing away from the battery 1 to electrically connect the circuit board 2. The other end of the conductive connection piece 3 is provided with a second bending part 302. The second bending part 302 abuts against the side surface of the battery 1 facing away from the circuit board 2 to electrically connect the battery 1.

[0032] It can be understood that the first bending part 301 and the second bending part 302 at both ends of the conductive connection piece 3 are bent toward the same side to form a "C" - shaped structure, so that the first bending part 301 and the second bending part 302 can respectively abut against the side surfaces of the battery 1 and the circuit board 2 that are away from each other. When the battery assembly 100 expands and deforms, the battery 1 can squeeze and press tightly against the first bending part 301 in the direction away from the circuit board 2, making it difficult for the first bending part 301 to fall off the battery 1. At the same time, it can also pull the second bending part 302, making the second bending part 302 more tightly attached to the side surface of the circuit board 2 facing away from the battery 1. Compared with the prior art where the conductive connection piece 3 is directly welded to the side surface of the circuit board 2 facing the battery 1, the second bending part 302 of this design is also not easy to break away from the battery 1, improving the connection stability of the conductive connection piece 3.

[0033] Among them, the battery assembly 100 also includes a packaging member 4, which is wrapped around the outside of the conductive connecting piece 3, the battery 1 and the circuit board 2. Exemplarily, the packaging member 4 is a potting glue, which includes but is not limited to insulating silicone, resin potting glue, etc. The battery assembly 100 includes a shell 6, and the battery 1, the circuit board 2 and the conductive connecting piece 3 are connected to form a whole and installed in the shell 6, and then the potting glue is poured in the shell 6. This design can pot the whole in the shell 6 by potting glue, which can not only play a waterproof and moisture-proof role, but also insulate and seal the whole to prevent the battery 1 from leaking due to moisture or water ingress, and at the same time, it can also play a shockproof protection role to prevent the conductive connecting piece 3 or other parts of the battery assembly from loosening due to vibration and causing failure. Therefore, the battery assembly 100 of the utility model is not easily affected by external factors and is more stable and reliable.

[0034] Since a plurality of electrical components are arranged on the circuit board 2, and in order to adapt to the trend of miniaturization design of the battery assembly 100, the circuit board 2 is generally small in size, and after the electrical components are installed, there is not enough space to install the battery 1. Specifically, in order to avoid damage to the electrical components when connecting the circuit board 2 and the battery 1, the battery 1 and the circuit board 2 are spaced apart and form an avoidance space 5, and the avoidance space 5 is used to accommodate the electrical components on the circuit board 2.

[0035] If the distance between the battery 1 and the circuit board 2 is too large, the overall size of the battery assembly will increase, which is not conducive to miniaturization design, while if the distance between the battery 1 and the circuit board 2 is too small, the electrical components on the circuit board 2 will be damaged. Preferably, the distance H between the battery 1 and the circuit board 2 is 0.2mm to 1mm. Optionally, the distance H between the battery 1 and the circuit board 2 is 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc. This design can minimize the distance between the battery 1 and the circuit board 2 as much as possible while ensuring that enough space is reserved to avoid electrical components, so as to minimize the excess space in the avoidance space 5, thereby reducing the overall size of the battery assembly.

[0036] Optionally, the battery 1 is parallel to and spaced from the circuit board 2 .

[0037] Specifically, the conductive connecting piece 3 includes a first connecting piece 31 and a second connecting piece 32, and the first connecting piece 31 and the second connecting piece 32 are respectively connected to the positive electrode and the negative electrode of the battery 1 to form a circuit. The circuit board 2 has two openings, and the first bending portions 301 of the first connecting piece 31 and the second connecting piece 32 pass through the two openings and abut against the side of the circuit board 2 away from the battery 1, so that the first connecting piece 31 and the second connecting piece 32 are firmly connected to the circuit board 2.

[0038] In an optional embodiment, the positive electrode and the negative electrode of the battery 1 are arranged on different sides of the battery 1, and the second bent portions 302 of the first connecting piece 31 and the second connecting piece 32 are respectively connected to different sides of the battery 1. Specifically, the battery 1 has a first side 101 away from the circuit board 2 and a second side 102 facing the circuit board 2, one of the first side 101 and the second side 102 is the positive electrode of the battery 1, and the other of the first side 101 and the second side 102 is the negative electrode of the battery 1, the second bent portion 302 of the first connecting piece 31 abuts against the first side 101, and the second bent portion 302 of the second connecting piece 32 is arranged in the avoidance space 5 and connected to the second side 102. The second bent portions 302 of the first connecting piece 31 and the second connecting piece 32 can be clamped on the opposite sides of the battery 1 respectively to more stably connect the battery 1. Moreover, this design can be supported between the battery 1 and the circuit board 2 through the second bending portion 302 of the second connecting plate 32 to form a stable avoidance space 5. At the same time, the distance between the battery 1 and the circuit board 2 can be accurately controlled through the second bending portion 302 to ensure that the distance between the battery 1 and the circuit board 2 is within a preset range.

[0039] Exemplarily, the battery 1 may be a button battery, which includes a shell 6 and a battery cell disposed in the shell 6, the shell 6 includes a casing and a shell cover, the casing and the shell cover are sealed and connected by an insulating sealing rubber ring, the casing is connected to the positive electrode of the battery cell, the casing can serve as the positive electrode of the button battery 1, the shell cover is connected to the negative electrode of the battery cell, the shell cover can serve as the negative electrode of the button battery 1, so that the positive electrode and the negative electrode of the battery 1 can be on different sides of the battery 1. Specifically, one of the two opposite side surfaces of the casing and the shell cover faces the circuit board 2, and the other of the two opposite side surfaces of the casing and the shell cover faces away from the circuit board 2, the first connecting piece 31 is connected to one of the side surfaces, and the second connecting piece 32 is connected to the other side surface to form a power supply circuit.

[0040] Of course, in other optional embodiments, the side of the battery 1 facing away from the circuit board 2 is respectively provided with a positive electrode and a negative electrode, and the second bent portions 302 of the two conductive connecting pieces 3 are respectively clamped on the side of the battery 1 facing away from the circuit board 2 and are respectively connected to the positive electrode and the negative electrode. The two conductive connecting pieces 3 of this design jointly support and clamp the battery 1, so that the connection between the battery 1 and the conductive connecting pieces 3 is more stable.

[0041] Furthermore, after the first bent portion 301 abuts against the circuit board 2 , the first bent portion 301 is further connected, welded or bonded to the circuit board 2 via a fastener, so that the connection between the first bent portion 301 and the circuit board 2 is more stable.

[0042] And / or, after the second bent portion 302 abuts against the battery 1 , the second bent portion 302 is connected to the battery 1 via a fastener or welded or bonded to the battery 1 , so that the connection between the first bent portion 301 and the battery 1 is more stable.

[0043] In this embodiment, the first bent portion 301 is welded to the circuit board 2 by soldering, for example, and the second bent portion 302 is welded to the battery 1 by spot welding, for example.

[0044] Exemplarily, a solder layer is provided on the circuit board 2, and a nickel-plated layer and a tin-plated layer are provided on the surface of the first bending portion 301 from the inside to the outside, and the tin-plated layer is connected to the solder layer. In other words, after welding, the tin-plated layer and the solder layer are combined together to achieve welding of the circuit board 2 and the first bending portion 301. The nickel-plated layer has both excellent corrosion resistance and oxidation resistance, and can protect the first bending portion 301 from oxidation corrosion. In addition, the nickel-plated layer can also provide better adhesion, so that the tin-plated layer is better attached to the first bending portion 301, so that the tin-plated layer is not easy to fall off, which helps to improve the welding effect.

[0045] Optionally, the first bending portion 301 may be formed with a nickel-plated layer or a tin-plated layer by electroplating or chemical plating.

[0046] Furthermore, in order to improve the adhesion of the nickel-plated layer, the nickel-plated layer contains a stress agent, which may include phosphorus, and the stress agent can reduce the internal stress of the nickel-plated layer. Exemplarily, the first bent portion 301 can be nickel-plated at room temperature first, and then nickel metal containing phosphorus is plated under high temperature conditions to form a nickel-plated layer. The nickel-plated layer containing phosphorus has a small internal stress, which can further improve the bonding strength between the nickel-plated layer and the first bent portion 301, and between the nickel-plated layer and the tin-plated layer.

[0047] Optionally, the conductive connecting sheet 3 can be made of steel. For example, the conductive connecting sheet 3 can be made of stainless steel such as SUS304, SUS430, SUS316, etc. Stainless steel has conductive properties, good corrosion resistance, high strength, and long service life, making the conductive connecting sheet 3 more stable and reliable, which helps to improve the stability of the battery assembly 100.

[0048] Since the conductive connecting sheet 3 made of stainless steel has poor conductivity, based on this, preferably, a copper plating layer is further provided between the nickel plating layer and the tin plating layer, that is, the surface of the first bending portion 301 is provided with a nickel plating layer, a copper plating layer and a tin plating layer in sequence from the inside to the outside. The copper plating layer can reduce the resistivity of the first bending portion 301, improve the conductivity of the first bending portion 301, and thus improve the conductive performance of the conductive connecting sheet 3.

[0049] Specifically, as in the above scheme, when the first bent portion 301 of the conductive connecting piece 3 passes through the opening and is clamped on a side of the circuit board 2 away from the battery 1, and the second bent portion 302 of the conductive connecting piece 3 is clamped on the side of the battery 1 away from the circuit board 2, the first connecting piece 31 also includes a main body 303, and the two ends of the main body 303 are respectively connected with the first bent portion 301 and the second bent portion 302 at an angle. The main body 303 and the battery 1 are spaced apart to avoid the main body 303 contacting the battery 1 and causing a short circuit.

[0050] Optionally, an insulating member is provided between the main body 303 and the battery 1. Exemplarily, when the package 4 is potted, the potting glue will be filled between the main body 303 and the battery 1 to form the insulating member, and the insulating member can insulate and isolate the main body 303 and the battery 1 to ensure that the main body 303 and the battery 1 do not contact.

[0051] like Figure 3 As shown, the utility model also provides an electronic device, including a device body and a battery assembly 100 described in any of the above embodiments, the battery assembly 100 is used to provide power to the device body. The utility model uses the battery assembly 100 described in any of the above embodiments as a power source, which can work more stably, is not likely to cause the entire electronic device to fail to work due to power failure, has better performance and a long service life.

[0052] Optionally, the electronic device may be a rotating device that needs to rotate frequently or may be applied to a rotating device that needs to rotate frequently. Figure 3 , wherein the electronic device has a rotation center axis 300, the electronic device rotates around the rotation center axis 300, the battery 1 of the battery assembly 100 is adjacent to the rotation center axis 300, and the circuit board 2 of the battery assembly 100 is away from the rotation center axis 300. Exemplarily, the electronic device is a tire pressure monitor, the rotating device 200 is a vehicle tire, and the tire pressure monitor is installed on the tire to detect the tire pressure of the tire. The tire pressure monitor can rotate synchronously with the tire, that is, the rotation center axis of the tire pressure monitor overlaps with the rotation center of the tire, the battery 1 of the battery assembly 100 of the tire pressure monitor is closer to the rotation center of the tire, the circuit board 2 of the battery assembly 100 is arranged on the side of the battery away from the rotation center of the tire, and the circuit board 2 is closer to the outer periphery of the tire, so that the centrifugal force on the battery 1 is smaller, and the heat generated by friction when the tire rotates is less transferred to the battery 1, which helps to reduce the expansion and deformation of the battery 1, thereby reducing the force on the conductive connecting piece 3, so that the conductive connecting piece 3 is more stably connected.

[0053] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, 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 therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0054] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0055] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0056] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A battery assembly, characterized in that: It includes a packaging component, a conductive connecting sheet, and a battery and a circuit board arranged oppositely. The battery is connected to the circuit board through the conductive connecting sheet. A first bending portion is arranged at one end of the conductive connecting sheet. An opening is arranged on the circuit board. The first bending portion passes through the opening and abuts against the side of the circuit board away from the battery. A second bending portion is arranged at the other end of the conductive connecting sheet. The second bending portion abuts against the side of the battery away from the circuit board. The packaging component is wrapped around the outside of the conductive connecting sheet, the battery and the circuit board.

2. The battery assembly according to claim 1, characterized in that: The battery and the circuit board are spaced apart to form an escape space, and the escape space is used to accommodate electrical components on the circuit board.

3. The battery assembly according to claim 2, characterized in that: The conductive connecting sheet further comprises a first connecting sheet and a second connecting sheet, the circuit board is provided with two openings, and the first bent portions of the first connecting sheet and the second connecting sheet respectively pass through the two openings and abut against the side of the circuit board away from the battery; The battery has a first side facing away from the circuit board and a second side facing the circuit board, one of the first side and the second side is the positive electrode of the battery, and the other of the first side and the second side is the negative electrode of the battery, the second bent portion of the first connecting piece abuts against the first side, and the second bent portion of the second connecting piece is arranged in the avoidance space and connected to the second side.

4. The battery assembly according to claim 2, characterized in that: The distance H between the battery and the circuit board is 0.2 mm to 1 mm.

5. The battery assembly according to claim 3, characterized in that: The first connecting piece includes a main body, and the first bending portion and the second bending portion are connected at two ends of the main body at an angle, respectively. The main body and the battery are spaced apart.

6. The battery assembly according to claim 5, characterized in that: An insulating member is provided between the main body and the battery.

7. The battery assembly according to any one of claims 1 to 6, characterized in that: The first bending portion is welded to the circuit board; The surface of the first bending portion is provided with a nickel plating layer and a tin plating layer in sequence from the inside to the outside, or the surface of the first bending portion is provided with a nickel plating layer, a copper plating layer and a tin plating layer in sequence from the inside to the outside, a solder layer is provided on the circuit board, and the tin plating layer is connected to the solder layer.

8. The battery assembly according to any one of claims 1 to 6, characterized in that: The first bending portion is connected, welded or bonded to the circuit board via a fastener; And / or, the second bent portion is connected, welded or bonded to the battery via the fastener.

9. An electronic device, characterized in that: It comprises a device body and a battery assembly as described in any one of claims 1 to 8, wherein the battery assembly is used to provide electrical energy to the device body.

10. The electronic device according to claim 9, characterized in that: The electronic device has a rotation center axis, the battery of the battery assembly is adjacent to the rotation center axis, and the circuit board of the battery assembly is far away from the rotation center axis.

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