Battery and electronic equipment

Abstract

The utility model relates to a battery and electronic equipment. The battery comprises a battery protection plate, a connector, a shunting structure and a single battery, the soft board of the battery protection board is provided with a first access end, a second access end and a third access end which are arranged along a first direction, the third access end is electrically connected with the hard board, and the shunting structure is provided with a first shunting outlet end, a second shunting outlet end and a first shunting access end; the first shunt outlet end and the second shunt outlet end are electrically connected with the first access end and the second access end respectively, the first tab and the second tab of the single battery are electrically connected with the first shunt access end and the third access end respectively, and a current path between the first access end and the first connector is a first path. The current path between the second access end and the second connector is a second path, and the length of the first path is equal to the length of the second path, so that the current impedance between the first access end and the first connector is equal to the current impedance between the second access end and the second connector.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery and electronic equipment. BACKGROUND

[0002] With the progress of technology, more and more mobile phones and tablets are pursuing faster charging time, and the charging power is getting larger and larger, and the current that the battery protection plate needs to withstand is also getting larger and larger. In addition to the voltage and current resistance of the protection device, the overall temperature rise of the battery is more tested. For the temperature rise of the battery, the temperature rise of the battery protection plate is often greater than that of the single battery, which is the current that the battery protection plate needs to withstand is getting larger and larger, resulting in the temperature rise of the FPC which is already narrow and slender. At present, most designs reduce the overall impedance of the battery protection plate by thickening and widening the battery protection plate, thereby reducing the temperature rise of the battery protection plate and the overall temperature rise of the battery. However, the current overall external structure of the battery is relatively fixed, and the space for the battery protection plate to play in the structure is very small, and the thickness requirement of the battery protection plate is high, and the copper skin cannot be thickened for heat dissipation without limit.

[0003] The number of current collectors of the current single battery is limited, and generally a single single battery has only two current collectors. In the design of the common double-current collector single battery, because the positive input end and the negative input end in the battery protection plate are left and right, the impedance balance of the left and right connectors is often poor, causing the current difference between the left and right connectors to be too large when outputting, resulting in the problem of single-side temperature rise being particularly high. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a battery and electronic equipment which can solve the technical problems that the current of the existing battery protection plate is large, the temperature rise is high, the impedance balance of the two connectors on the battery protection plate is poor, the current difference between the left and right connectors is too large, and the single-side temperature rise is particularly high.

[0005] To solve the above problems, the utility model provides a kind of battery, battery has first direction, battery includes: battery protection plate, it includes mutually electric connection soft board and hard board, soft board extends along first direction, first access end, second access end and third access end are equipped along first direction arrangement on soft board, third access end is electrically connected with hard board;Connector, it includes first connector and second connector, first connector is electrically connected on the soft board of the side of first access end away from second access end, second connector is electrically connected on the soft board of the side of second access end away from first access end;Shunt structure, it is equipped with first shunt outlet, second shunt outlet and first shunt access end, first shunt outlet and second shunt outlet are electrically connected with first access end and second access end respectively;Single battery, it has polarity opposite first lug and second lug, first lug and second lug are electrically connected with first shunt access end and third access end respectively;Wherein, the current path between first access end and first connector is first path, the current path between second access end and second connector is second path, the length of first path is equal to the length of second path, so that the current impedance between first access end and first connector is equal to the current impedance between second access end and second connector.

[0006] In some embodiments, hard board extends along first direction, both ends of hard board in first direction are electrically connected to soft board respectively, third access end is electrically connected to the middle part of hard board, third access end is between first access end and second access end, the current path between third access end and first connector is third path, the current path between third access end and second connector is fourth path;The current path between first shunt access end and first shunt outlet is fifth path, the current path between first shunt access end and second shunt outlet is sixth path.

[0007] In some embodiments, the length of fifth path is equal to the length of sixth path, the length of third path is not equal to the length of fourth path, so that the current impedance between first shunt access end and first shunt outlet is equal to the current impedance between first shunt access end and second shunt outlet.

[0008] In some embodiments, the length of third path is equal to the length of fourth path, the length of fifth path is not equal to the length of sixth path, so that the current impedance between third access end and first connector is equal to the current impedance between third access end and second connector.

[0009] In some embodiments, the length of the fifth path is less than the length of the sixth path, and the length of the third path is greater than the length of the fourth path, such that the sum of the current impedance between the first shunt access end and the first shunt exit end and the current impedance between the third access end and the first connector is equal to the sum of the current impedance between the first shunt access end and the second shunt exit end and the current impedance between the third access end and the second connector.

[0010] In some embodiments, the length of the fifth path is greater than the length of the sixth path, and the length of the third path is less than the length of the fourth path, such that the sum of the current impedance between the first shunt access end and the first shunt exit end and the current impedance between the third access end and the first connector is equal to the sum of the current impedance between the first shunt access end and the second shunt exit end and the current impedance between the third access end and the second connector.

[0011] In some embodiments, the battery has a second direction intersecting the first direction, and the shunt structure includes: a main body portion and two extension portions protruding from both sides of the main body portion in the first direction, the two extension portions being located on one side of the main body portion in the second direction; the first shunt access end is provided on the main body portion, and the first shunt exit end and the second shunt exit end are respectively provided on the two extension portions.

[0012] In some embodiments, the main body portion and the two extension portions are integrally formed.

[0013] In some embodiments, the shunt structure has an area of a cross section perpendicular to the first direction greater than an area of a cross section of the soft plate perpendicular to the first direction.

[0014] In some embodiments, the first tab and the second tab are one of a positive electrode tab and a negative electrode tab, respectively.

[0015] To solve the above problems, the utility model also provides an electronic device, electronic device includes mainboard and the battery of application, mainboard is electrically connected to connector.

[0016] The utility model discloses the advantages are: the application utilizes the shunt structure to the current on the soft plate between the first access end and the second access end shunt, make the current between the first access end and the second access end transmission through the shunt structure, and then can increase the through -current capacity of battery protection board under the condition of not increasing the width of soft plate, reduce the temperature rise of battery protection board, reduce the overall temperature rise of battery, increase the reliability of battery.

[0017] Because the shunt structure has low impedance, the shunt structure can improve the impedance imbalance between the first connector and the second connector when shunting, better balance the output current of the first connector and the second connector, and improve the large temperature rise difference between the first connector and the second connector.

[0018] The length of the first path is equal to the length of the second path, so that the current impedance between the first access end and the first connector is equal to the current impedance between the second access end and the second connector, thereby further improving the impedance imbalance between the first connector and the second connector, better balancing the output current of the first connector and the second connector, and improving the large temperature rise difference between the first connector and the second connector. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application;

[0021] Figure 2 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application;

[0022] Figure 3 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application; Figure 1 ;

[0023] Figure 4 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application; Figure 2 ;

[0024] Figure 5 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application;

[0025] Figure 6 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application;

[0026] Figure 7 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application;

[0027] Figure 8 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application;

[0028] Figure 9 is a schematic diagram of a battery protection plate and a shunt structure of the battery of the embodiment 1 of the present application;

[0029] Figure 10 is a schematic view of a battery protection plate and a shunt structure according to Embodiment 4 of the present application.

[0030] Explanation of Reference Numerals:

[0031] 100, battery;

[0032] 1, battery protection plate; 2, connector; 3, shunt structure; 4, single battery;

[0033] 11, soft plate; 12, hard plate; 111, first access end; 112, second access end; 113, third access end; 1101, first surface; 1102, second surface;

[0034] 21, first connector; 22, second connector;

[0035] 31, first shunt access end; 32, second shunt access end; 33, first shunt access end; 301, main body portion; 302, extension portion;

[0036] 41, first tab; 42, second tab. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present application are described in detail below with reference to the accompanying drawings, to give a complete understanding of the technical content of the present application to those skilled in the art, to prove by example that the present application can be implemented, to make the technical content disclosed by the present application more clear, and to make it easier for those skilled in the art to understand how to implement the present application. However, the present application can be embodied in many different forms of embodiments, and the protection scope of the present application is not limited to the embodiments mentioned herein, and the description of the embodiments below is not intended to limit the scope of the present application.

[0038] The direction terms mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only the directions in the drawings, and the direction terms used herein are used to explain and describe the present application, and are not intended to limit the protection scope of the present application.

[0039] In the drawings, components with the same structure are denoted by the same reference numerals, and components with similar structure or function are denoted by similar reference numerals. In addition, in order to facilitate understanding and description, the size and thickness of each component shown in the drawings are arbitrarily shown, and the present application does not limit the size and thickness of each component.

[0040] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the embodiment provides a battery 100. The battery 100 comprises a first direction M, a second direction N and a third direction P which intersect with each other. In the embodiment, the first direction M, the second direction N and the third direction P are perpendicular to each other.

[0041] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the battery 100 comprises a battery protection plate 1, a connector 2, a shunt structure 3 and a single battery 4.

[0042] As shown in Figures 1-4 , the battery protection plate 1 comprises a flexible printed circuit (FPC) 11 and a printed circuit board (PCB) 12 which are electrically connected to each other.

[0043] The FPC 11 extends along the first direction M. The FPC 11 has a first surface 1101 and a second surface 1102 in the third direction P. The FPC 11 is provided with a first access end 111, a second access end 112 and a third access end 113 arranged along the first direction M, and the third access end 113 is located between the first access end 111 and the second access end 112. Specifically, the first access end 111, the second access end 112 and the third access end 113 are arranged on the first surface 1101.

[0044] The PCB 12 extends along the first direction M. The PCB 12 is arranged on the second surface 1102 of the FPC 11. The two ends of the PCB 12 in the first direction M are electrically connected to the FPC 11 respectively. The third access end 113 is electrically connected to the PCB 12, specifically, the third access end 113 is electrically connected to the middle part of the PCB 12. In this way, the current enters the middle part of the PCB 12 from the third access end 113, and then is transmitted to the two ends of the PCB 12 in the first direction M inside the PCB 12, and then is transmitted to the first connector and the second connector on the FPC 11 through the FPC 11. It should be noted that the third access end 113 is electrically connected to the middle part of the PCB 12, and the middle part here is not limited to the midpoint position of the PCB 12 in the first direction M, and it should be understood that the positions between the two end parts of the PCB 12 in the first direction M are all middle parts.

[0045] As shown in Figure 4 , the connector 2 comprises a first connector 21 and a second connector 22. The first connector 21 is electrically connected to the FPC 11 on the side of the first access end 111 away from the second access end 112, and the second connector 22 is electrically connected to the FPC 11 on the side of the second access end 112 away from the first access end 111.

[0046] As shown in Figure 1 and Figure 2As shown, the shunt structure 3 is provided with a first shunt outlet end 31, a second shunt outlet end 32 and a first shunt inlet end 33, and the first shunt outlet end 31 and the second shunt outlet end 32 are respectively electrically connected with the first inlet end 111 and the second inlet end 112. In this way, the current enters from the first shunt inlet end 33, is transmitted to the first shunt outlet end 31 and the second shunt outlet end 32, enters the soft board 11 through the first shunt outlet end 31 and the first inlet end 111, and is then transmitted to the first connector 21, and enters the soft board 11 through the second shunt outlet end 32 and the second inlet end 112, and is then transmitted to the second connector 22.

[0047] As shown in Figure 1 and Figure 2 , the shunt structure 3 includes a main body part 301 and two extension parts 302 protruding from both sides of the main body part 301 in the first direction M, and the two extension parts 302 are located on one side of the main body part 301 in the second direction N. In this embodiment, the main body part 301 and the two extension parts 302 are integrally formed. In other embodiments, the main body part 301 and the two extension parts 302 can also be electrically connected and fixed by welding or other processes.

[0048] As shown in Figure 1 and Figure 2 , the first shunt inlet end 33 is arranged on the main body part 301, and the first shunt outlet end 31 and the second shunt outlet end 32 are respectively arranged on the two extension parts 302.

[0049] Among them, the area of the shunt structure 3 in the cross section perpendicular to the first direction M is greater than the area of the soft board 11 in the cross section perpendicular to the first direction M. In this way, the impedance of the shunt structure 3 can be greatly reduced compared to the impedance of the soft board 11, so that the shunt structure 3 can not only shunt the positive current on the soft board 11 between the first inlet end 111 and the second inlet end 112, but also improve the impedance imbalance between the first connector 21 and the second connector 22, better balance the output current of the first connector 21 and the second connector 22, and improve the phenomenon that the temperature rise of the first connector 21 and the second connector 22 is greatly different.

[0050] As shown in Figure 1 and Figure 2 , the single battery 4 has a first tab 41 and a second tab 42 with opposite polarities, and the first tab 41 and the second tab 42 are respectively electrically connected with the first shunt inlet end 33 and the third inlet end 113. The first tab 41 and the second tab 42 are one of the positive tab and the negative tab. When the protection circuit in the hard board 12 is protected by the negative low-voltage circuit, the first tab 41 is the positive tab and the second tab is the negative tab; when the protection circuit in the hard board 12 is protected by the positive low-voltage circuit, the first tab is the negative tab and the second tab is the positive tab.

[0051] In this embodiment, the first tab 41 is a positive electrode tab, and the second tab 42 is a negative electrode tab. In this way, the negative electrode current enters the middle of the hard plate 12 from the third access end 113, and then is transmitted inside the hard plate 12 to both ends of the hard plate 12 in the first direction M, and then is transmitted to the first connector and the second connector on the soft plate 11 through the soft plate 11. The positive electrode current enters from the first shunt access end 33, is transmitted to the first shunt exit end 31 and the second shunt exit end 32, enters the soft plate 11 through the first shunt exit end 31 and the first access end 111, and is then transmitted to the first connector 21, and enters the soft plate 11 through the second shunt exit end 32 and the second access end 112, and is then transmitted to the second connector 22.

[0052] In summary, the negative electrode current passes through the hard plate 12, which is a 6-layer, 8-layer or even higher-layer PCB plate, and the thickness of the hard plate 12 is relatively thick, so the impedance is relatively small. The positive electrode current passes through the soft plate 11, which has relatively less copper skin and a relatively thin thickness, so the impedance of the soft plate 11 is relatively large. The present application uses the shunt structure 3 to shunt the positive electrode current on the soft plate 11 between the first access end 111 and the second access end 112, so that the positive electrode current between the first access end 111 and the second access end 112 is transmitted through the shunt structure 3, thereby increasing the current-carrying capacity of the battery protection plate 1 without increasing the width of the soft plate 11, reducing the temperature rise of the battery protection plate 1, reducing the overall temperature rise of the battery 100, and increasing the reliability of the battery 100. The present application can also use the shunt structure 3 to increase the heat dissipation area of the battery 100 and reduce the overall temperature rise of the battery 100.

[0053] In this embodiment, the length L1 of the current path between the first access end 111 and the first connector 21 is equal to the length L2 of the current path between the second access end 112 and the second connector 22. In this way, the impedance between the first connector 21 and the second connector 22 can be further improved, and the output current of the first connector 21 and the second connector 22 can be better balanced, and the temperature rise difference between the first connector 21 and the second connector 22 can be improved. It is worth noting that the length L1 of the first path refers to the unfolded length of the first path, i.e. L1 = a + g, and the length L2 of the second path refers to the unfolded length of the second path, i.e. L2 = b + h. In this embodiment, a = b and g = h.

[0054] The current path between the third access end 113 and the first connector 21 is a third path, and the length of the third path is L3. The current path between the third access end 113 and the second connector 22 is a fourth path, and the length of the fourth path is L4. The current path between the first shunt access end 33 and the first shunt exit end 31 is a fifth path, and the length of the fifth path is L5. The current path between the first shunt access end 33 and the second shunt exit end 32 is a sixth path, and the length of the sixth path is L6. It is worth noting that the length L3 of the third path refers to the unfolded length of the third path, that is, L3 = c + g. The length L4 of the fourth path refers to the unfolded length of the fourth path, that is, L4 = d + h. The length L5 of the fifth path refers to the unfolded length of the fifth path, that is, L5 = e + j. The length L6 of the sixth path refers to the unfolded length of the sixth path, that is, L6 = f + k. In this embodiment, j = k.

[0055] As shown in Figure 1 and Figure 2 , the length L5 of the fifth path is equal to the length L6 of the sixth path, that is, e = f, and the length L3 of the third path is not equal to the length L4 of the fourth path. In this embodiment, the length L3 of the third path is less than the length L4 of the fourth path, that is, c < d. In other embodiments, the length L3 of the third path can also be greater than the length L4 of the fourth path, that is, c > d. In this way, the current impedance between the first shunt access end 33 and the first shunt exit end 31 can be equal to the current impedance between the first shunt access end 33 and the second shunt exit end 32, further improving the impedance imbalance between the first connector 21 and the second connector 22, better balancing the output currents of the first connector 21 and the second connector 22, and improving the phenomenon of large temperature rise difference between the first connector 21 and the second connector 22.

[0056] Embodiment 2

[0057] As shown in Figures 5-6As shown in the figure, the embodiment includes most of the technical features of the embodiment 1. The difference between the embodiment and the embodiment 1 is that, in the embodiment, the length L3 of the third path is equal to the length L4 of the fourth path, i.e. c=d, and the length L5 of the fifth path is not equal to the length L6 of the sixth path. In the embodiment, the length L5 of the fifth path is smaller than the length L6 of the sixth path, i.e. e

[0058] Embodiment 3

[0059] As shown in the figure, the embodiment includes most of the technical features of the embodiment 1. The difference between the embodiment and the embodiment 1 is that, in the embodiment, the length L5 of the fifth path is smaller than the length L6 of the sixth path, i.e. e Figures 7-8

[0060] Embodiment 4

[0061] As shown in the figure, the embodiment includes most of the technical features of the embodiment 1. The difference between the embodiment and the embodiment 1 is that, in the embodiment, the length L5 of the fifth path is greater than the length L6 of the sixth path, i.e. e Figures 9-10

[0062] ​​The application also provides an electronic device (not shown in the figure). The electronic device comprises a mainboard (not shown in the figure) and the battery of the above embodiment. The mainboard is electrically connected to the connector 2 of the battery 100.

[0063] The above describes in detail the battery and the electronic device provided by the application. The principles and implementation manners of the application are described by using specific examples. The above description of the embodiments is only used to help understand the core idea of the application. Meanwhile, for those skilled in the art, the specific implementation manners and application ranges can be changed according to the idea of the application. In conclusion, the content of the description should not be understood as a limitation of the application.

Claims

1. A battery, characterized by, The battery has a first direction (M), and the battery comprises: a battery protection plate (1) comprising a soft plate (11) and a hard plate (12) that are electrically connected to each other, the soft plate (11) extending along the first direction (M), the soft plate (11) being provided with a first access end (111), a second access end (112), and a third access end (113) arranged along the first direction (M), the third access end (113) being electrically connected to the hard plate (12); a connector (2) comprising a first connector (21) and a second connector (22), the first connector (21) being electrically connected to the soft plate (11) on a side of the first access end (111) away from the second access end (112), and the second connector (22) being electrically connected to the soft plate (11) on a side of the second access end (112) away from the first access end (111); a shunt structure (3) provided with a first shunt access end and a second shunt access end (32) and a first shunt exit end (33) (31), the first shunt exit end (33) (31) and the second shunt exit end (32) being electrically connected to the first access end (111) and the second access end (112), respectively; a single battery (4) having a first tab (41) and a second tab (42) with opposite polarities, the first tab (41) and the second tab (42) being electrically connected to the first shunt access end and the third access end (113), respectively; wherein a current path between the first access end (111) and the first connector (21) is a first path, a current path between the second access end (112) and the second connector (22) is a second path, a length of the first path is equal to a length of the second path, so that a current impedance between the first access end (111) and the first connector (21) is equal to a current impedance between the second access end (112) and the second connector (22).

2. The battery of claim 1, wherein, The hard plate (12) extends along the first direction (M), both ends of the hard plate (12) in the first direction (M) are electrically connected to the soft plate (11), the third access end (113) is electrically connected to a middle part of the hard plate (12), the third access end (113) is located between the first access end (111) and the second access end (112), a current path between the third access end (113) and the first connector (21) is a third path, and a current path between the third access end (113) and the second connector (22) is a fourth path; a current path between the first shunt access end and the first shunt exit end (33) (31) is a fifth path, and a current path between the first shunt access end and the second shunt exit end (32) is a sixth path.

3. The battery of claim 2, wherein, The length of the fifth path is equal to the length of the sixth path, and the length of the third path is not equal to the length of the fourth path, so that the current impedance between the first shunt access end and the first shunt exit end (33) (31) is equal to the current impedance between the first shunt access end and the second shunt exit end (32).

4. The battery of claim 2, wherein, The length of the third path is equal to the length of the fourth path, and the length of the fifth path is not equal to the length of the sixth path, so that the current impedance between the third access end (113) and the first connector (21) is equal to the current impedance between the third access end (113) and the second connector (22).

5. The battery of claim 2, wherein, The length of the fifth path is less than the length of the sixth path, and the length of the third path is greater than the length of the fourth path, so that the sum of the current impedance between the first shunt access end and the first shunt exit end (33) (31) and the current impedance between the third access end (113) and the first connector (21) is equal to the sum of the current impedance between the first shunt access end and the second shunt exit end (32) and the current impedance between the third access end (113) and the second connector (22).

6. The battery of claim 2, wherein, The length of the fifth path is greater than the length of the sixth path, and the length of the third path is less than the length of the fourth path, so that the sum of the current impedance between the first shunt access end and the first shunt exit end (33) (31) and the current impedance between the third access end (113) and the first connector (21) is equal to the sum of the current impedance between the first shunt access end and the second shunt exit end (32) and the current impedance between the third access end (113) and the second connector (22).

7. The battery of claim 1, wherein, The battery has a second direction (N) intersecting the first direction (M), and the shunt structure (3) comprises a main body portion (301) and two extension portions (302) protruding from both sides of the main body portion (301) in the first direction (M), and the two extension portions (302) are located on one side of the main body portion (301) in the second direction (N). The first shunt access end is arranged on the main body portion (301), and the first shunt exit end (33) (31) and the second shunt exit end (32) are arranged on the two extension portions (302) respectively.

8. The battery of claim 7, wherein, The main body portion (301) and the two extension portions (302) are integrally formed.

9. The battery of claim 1, wherein, The area of the shunt structure (3) in the cross section perpendicular to the first direction (M) is greater than the area of the soft plate (11) in the cross section perpendicular to the first direction (M).

10. The battery of claim 1, wherein, The first tab (41) and the second tab (42) are one of a positive electrode tab and a negative electrode tab respectively.

11. An electronic device, comprising: The electronic device comprises a mainboard and the battery of any one of claims 1-10, and the mainboard is electrically connected to the connector (2).

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