Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, the battery pack has a first direction and a second direction which are intersected, the battery pack comprises a signal acquisition board, the signal acquisition board comprises a first board body, a first acquisition terminal, a second acquisition terminal, a second board body and a signal transmission assembly, the first acquisition terminal is connected with the first board body, and the second acquisition terminal is connected with the second board body; the second acquisition terminal is adjacent to the first acquisition terminal in the second direction, is arranged at an interval and is connected with the first plate body, the second plate body is at least partially arranged at an interval with the first plate body in the first direction, the signal transmission assembly comprises a first wiring part and a second wiring part which are adjacent to each other in the first direction and are arranged at an interval, and the first wiring part is connected with the first plate body; the first wiring part is conductively connected with the first acquisition terminal; and the second wiring part is connected with the second plate body, and the second wiring part is conductively connected with the second acquisition terminal. The utility model is mainly used for reducing the voltage difference between the first wiring part and the second wiring part which are arranged at an interval along the first direction.

Description

Technical Field

[0001] The present application belongs to the technical field of power batteries, and specifically relates to a battery pack and an electrical device. Background Art

[0002] With the continuous advancement of power battery grouping technology, CTP (Cell to Pack) battery pack structure has become the mainstream grouping method in the industry. Among them, FPC (FPC, Flexible Printed Circuit, signal acquisition board) is usually used to collect the voltage and temperature data of the single battery of the power battery to obtain the working status of the power battery. For a single-layer signal acquisition board, when its acquisition line is connected to the connector, it is limited by the routing of the acquisition line, and there is a problem that the acquisition terminals corresponding to adjacent pins are not set adjacently, resulting in a large voltage difference between adjacent pins. Utility Model Content

[0003] Purpose of the utility model: An embodiment of the present application provides a battery pack, aiming to solve the problem of large voltage difference between adjacent pins when the acquisition line of the existing single-layer signal acquisition board is connected to the connector; another purpose of the embodiment of the present application is to provide an electrical device.

[0004] Technical solution: A battery pack according to an embodiment of the present application has a first direction and a second direction intersecting each other, and includes a signal acquisition board, wherein the signal acquisition board includes:

[0005] A first plate body;

[0006] A first collection terminal connected to the first board;

[0007] a second collecting terminal, the second collecting terminal being adjacent to and spaced from the first collecting terminal along the second direction, and the second collecting terminal being connected to the first plate;

[0008] A second plate body, at least partially spaced apart from the first plate body along the first direction;

[0009] The signal transmission component includes a first wiring portion and a second wiring portion which are adjacent and spaced apart along the first direction; the first wiring portion is connected to the first board body, and the first wiring portion is conductively connected to the first collection terminal; the second wiring portion is connected to the second board body, and the second wiring portion is conductively connected to the second collection terminal.

[0010] In some embodiments, the first acquisition circuit is embedded in the first board and is conductively connected to the first acquisition terminal and the first wiring portion respectively;

[0011] A part of the second acquisition circuit is embedded in the first board body, and another part is embedded in the second board body; the second acquisition circuit is conductively connected to the second acquisition terminal and the second wiring portion respectively.

[0012] In some embodiments, the second plate comprises:

[0013] A body, spaced apart from the first plate along the first direction and connected to the second wiring portion, wherein a portion of the second acquisition circuit is embedded in the body and conductively connected to the second wiring portion;

[0014] The first adapter is connected to the body and bent along the first direction toward the body toward the first plate. The first adapter is connected to the first plate at a side away from the body, and part of the second acquisition circuit is embedded in the first adapter.

[0015] In some embodiments, the second plate comprises:

[0016] A body, spaced apart from the first plate along the first direction and connected to the second wiring portion, wherein a portion of the second acquisition circuit is embedded in the body and conductively connected to the second wiring portion;

[0017] A first adapter portion is connected to the body and is bent along the first direction toward one side of the body toward the first plate; a portion of the second acquisition circuit is embedded in the first adapter portion;

[0018] The second adapter is connected to the first plate along the second direction and spaced apart from the main body along the first direction. The side of the first adapter away from the main body is connected to the second adapter. Part of the second acquisition line is embedded in the second adapter.

[0019] In some embodiments, the first transfer portion is spaced apart from the signal transmission component along the second direction.

[0020] In some embodiments, there is a third direction intersecting the first direction and the second direction, the first acquisition circuit includes a first connection segment, the first connection segment extends along the third direction and is conductively connected to the first wiring portion; the second acquisition circuit includes a second connection segment, the second connection segment extends along the third direction and is conductively connected to the second wiring portion.

[0021] In some embodiments,

[0022] The signal acquisition board comprises a plurality of first acquisition circuits, a plurality of second acquisition circuits, a plurality of first acquisition terminals and a second acquisition terminal, the plurality of first acquisition circuits are arranged at intervals along the second direction, the plurality of second acquisition circuits are arranged at intervals, the plurality of first acquisition terminals are arranged at intervals along the third direction, and the second acquisition terminals are arranged at intervals along the third direction;

[0023] The signal transmission component comprises a plurality of first wiring portions and a plurality of second wiring portions, wherein the plurality of first wiring portions are arranged at intervals along the second direction, and the plurality of second wiring portions are arranged at intervals along the second direction;

[0024] Two first connection portions conductively connected to two adjacent first acquisition lines are arranged adjacent to each other along the second direction, and two first acquisition terminals conductively connected to two adjacent first acquisition lines are arranged adjacent to each other along the third direction;

[0025] Two second wiring portions conductively connected to two adjacent second acquisition lines are arranged adjacent to each other along the second direction, and two second acquisition terminals conductively connected to two adjacent second acquisition lines are arranged adjacent to each other along the third direction;

[0026] The first wiring portion and the second wiring portion, which are conductively connected to the first collecting terminal and the second collecting terminal adjacent to each other along the second direction, are adjacently arranged along the first direction.

[0027] In some embodiments, along the first direction, the first board is connected to a side of the first wiring portion away from the second wiring portion, and the second board is connected to a side of the second wiring portion away from the first wiring portion.

[0028] In some embodiments, the signal acquisition board also includes a first insulating layer, which is arranged between the first wiring portion and the second wiring portion along the first direction and is connected to the first wiring portion and the second wiring portion respectively; along the first direction, the orthographic projection of the first wiring portion on the first insulating layer is located within the surface of the first insulating layer facing the first wiring portion, and the orthographic projection of the second wiring portion on the first insulating layer is located within the surface of the first insulating layer facing the second wiring portion.

[0029] In some embodiments, the signal acquisition board further includes:

[0030] a second insulating layer connected to a side of the first plate away from the first wiring portion along the first direction;

[0031] The third insulating layer is connected to a side of the second plate away from the second wiring portion along the first direction.

[0032] Accordingly, an electrical device described in an embodiment of the present application includes a battery pack as described in any one of the aforementioned embodiments.

[0033] Beneficial effects: Compared with the prior art, a battery pack according to an embodiment of the present application has a first direction and a second direction intersecting each other, and includes a signal acquisition board, which includes a first board, a first acquisition terminal, a second acquisition terminal, a second board, and a signal transmission component. The first acquisition terminal is connected to the first board, the second acquisition terminal is adjacent to and spaced apart from the first acquisition terminal along the second direction, the second acquisition terminal is connected to the first board, and the second board is at least partially spaced apart from the first board along the first direction. The signal transmission component includes a first wiring portion and a second wiring portion spaced apart along the first direction, the first wiring portion is connected to the first board, and the first wiring portion is conductively connected to the first acquisition terminal; the second wiring portion is connected to the second board, and the second wiring portion is conductively connected to the second acquisition terminal through the first board and the second board. The present application arranges the second plate body at least partially spaced apart from the first plate body along the first direction, so that the first collection terminal and the second collection terminal spaced apart along the second direction are respectively conductively connected to the first wiring portion and the second wiring portion spaced apart along the first direction, so that the voltage difference between the first wiring portion and the second wiring portion spaced apart along the first direction is the voltage difference between the first collection terminal and the second collection terminal spaced apart along the second direction, thereby effectively reducing the voltage difference between the first wiring portion and the second wiring portion adjacent to each other along the first direction.

[0034] Compared with the prior art, the electric device of the embodiment of the present application includes a battery pack as described in any one of the above embodiments. It is understandable that the electric device of the embodiment of the present application can have all the technical features and corresponding beneficial effects of the above battery pack, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 is a schematic diagram of the overall structure of a battery pack according to an embodiment of the present application;

[0037] Figure 2 is a top view of a battery pack according to an embodiment of the present application;

[0038] Figure 3 is a top view of a signal acquisition board according to an embodiment of the present application;

[0039] Figure 4 A front view of a signal acquisition board according to an embodiment of the present application;

[0040] Figure 5 yes Figure 4 A magnified view of part A;

[0041] Figure 6 It is a left view of a signal acquisition board according to an embodiment of the present application;

[0042] Figure 7 is a three-dimensional diagram of a signal acquisition board according to an embodiment of the present application;

[0043] Figure 8 yes Figure 7 A magnified view of part B;

[0044] Fig. 9 This is an exploded diagram of a signal acquisition board after it is unfolded according to an embodiment of the present application;

[0045] Fig.10 yes Fig. 9 Enlarged view of part C;

[0046] Fig.11 is a schematic diagram of a second embodiment of the present application after the first plate and the second plate are unfolded;

[0047] Fig.12 is a schematic diagram of a third embodiment of the present application in which the first plate and the second plate are unfolded;

[0048] Fig.13 It is a schematic diagram of the structure of a single cell according to an embodiment of the present application.

[0049] Figure numerals: 1, signal acquisition board; 10, first acquisition terminal; 11, first board body; 12, second board body; 121, main body; 122, first adapter; 123, second adapter; 13, first acquisition circuit; 131, first connecting section; 14, second acquisition circuit; 141, second connecting section; 15, signal transmission component; 151, first wiring section; 152, second wiring section; 16, first insulating layer; 17, second insulating layer; 18, third insulating layer; 19, second acquisition terminal; 2, single cell; 21, first electrode; 22, second electrode; 3, bus; Z, first direction; Y, second direction; X, third direction. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0051] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.

[0052] It should also be noted that in the drawings of the present application, the arrow marked X indicates the third direction X, the arrow marked Y indicates the second direction Y, and the arrow marked Z indicates the first direction Z; wherein the first direction Z may be the thickness direction of the signal acquisition board. The second direction Y may be the width direction of the signal acquisition board, and the third direction X may be the length direction of the signal acquisition board. In the embodiment of the present application, the first direction Z, the second direction Y, and the third direction X are introduced to facilitate the description of the structural positional relationship of the various components of the signal acquisition board of the battery pack, thereby facilitating the understanding of its structure. In the embodiment of the present application, the first direction Z, the second direction Y, and the third direction X are preferably perpendicular to each other.

[0053] FPC is usually provided with a connector to connect with external management components. Since there are usually multiple single cells 2 arranged along the third direction X in the battery pack, the FPC often uses a connection acquisition line corresponding to a double-row connector to collect the voltage signal and temperature signal of each single cell 2. At this time, for a single-layer FPC, the PIN needles of the connector are usually designed to be staggered. For example, among the multiple acquisition terminals arranged in sequence along the third direction X, the multiple acquisition terminals are connected to two rows of PIN needles arranged along the first direction Z, and each row of PIN needles includes multiple PIN needles arranged at intervals along the second direction Y, wherein the first acquisition terminal is connected to the first PIN needle of the first row of PIN needles, the second acquisition terminal is connected to the first PIN needle of the second row of PIN needles, the third acquisition terminal is connected to the second PIN needle of the first row of PIN needles, and the fourth acquisition terminal is connected to the second PIN needle of the second row of PIN needles, and so on. At this time, the voltage difference between adjacent PIN needles along the first direction Z is two single cell 2 voltages, and the voltage difference between adjacent PIN needles along the second direction Y is four single cell 2 voltages. And the FPC board needs to be bent 90 degrees to connect when connecting the connector of the two rows of PIN needles. And because of the staggered setting of the PIN pins, the gap between the corresponding two adjacent PIN pins is also larger, which is equivalent to increasing the safe creepage distance in theory. However, since the two adjacent voltage collection points are located at the two ends of the FPC along the second direction Y, the voltage difference between the adjacent PIN pins of the FPC connector is large, which leads to an increase in the reserved safe creepage distance between the adjacent PIN pins, which further increases the size of the connector, wasting space and increasing design costs. Therefore, reducing the voltage difference between adjacent PIN pins is a technical problem that needs to be solved urgently.

[0054] In view of this, an embodiment of the present application provides a battery pack to solve the above-mentioned technical problems.

[0055] Please refer to Figure 1-Figure 5 , Figure 8 and Fig.10The embodiment of the present application provides a battery pack having a first direction Z and a second direction Y intersecting each other, and includes a signal acquisition board 1, the signal acquisition board 1 including a first board 11, a first acquisition terminal 10, a second acquisition terminal 19, a second board 12 and a signal transmission component 15. The first acquisition terminal 10 is connected to the first board 11, the second acquisition terminal 19 is adjacent to and spaced from the first acquisition terminal 10 along the second direction Y, and the second acquisition terminal 19 is connected to the first board 11. The second board 12 is connected to the first board 11, and the second board 12 is at least partially spaced from the first board 11 along the first direction Z. The signal transmission component 15 includes a first wiring portion 151 and a second wiring portion 152 adjacent to and spaced from each other along the first direction Z, the first wiring portion 151 is connected to the first board 11, and the first wiring portion 151 is conductively connected to the first acquisition terminal 10; the second wiring portion 152 is connected to the second board 12, and the second wiring portion 152 is conductively connected to the second acquisition terminal 19.

[0056] In the embodiment of the present application, by arranging the second plate body 12 to be spaced apart from the first plate body 11 at least partially along the first direction Z, the voltage difference between the first acquisition terminal 10 and the second acquisition terminal 19 spaced apart along the second direction Y and correspondingly conductively connected to the first wiring portion 151 and the second wiring portion 152 is achieved to be the voltage difference between the first acquisition terminal 10 and the second acquisition terminal 19 spaced apart and adjacently arranged along the second direction Y, and the voltage difference between the first acquisition terminal 10 and the second acquisition terminal 19 spaced apart along the second direction Y is the voltage difference of a single battery. Compared with the voltage difference of two single batteries 2 in the conventional technology, the voltage difference between the first wiring portion 151 and the second wiring portion 152 adjacently arranged along the first direction Z is effectively reduced.

[0057] In some embodiments, the signal acquisition board 1 also includes a first acquisition circuit 13 and a second acquisition circuit 14. The first acquisition circuit 13 is embedded in the first board body 11 and is conductively connected to the first acquisition terminal 10 and the first wiring portion 151 respectively; a part of the second acquisition circuit 14 is embedded in the first board body 11, and the other part is embedded in the second board body 12; the second acquisition circuit 14 is conductively connected to the second acquisition terminal 19 and the second wiring portion 152 respectively.

[0058] In the embodiment of the present application, a part of the second collection circuit 14 is embedded in the first plate 11, and another part is embedded in the second plate 12. The second plate 12 is bent relative to the first plate 11 so that a part of the second plate 12 is spaced apart from the first plate 11 along the first direction Z. At this time, the second collection circuit 14 is bent along with the bending of the second plate 12. Thus, the first collection circuit 13 and the second collection circuit 14 are spaced apart along the first direction Z.

[0059] It should be noted that in the embodiment of the present application, it is preferred that at least part of the first acquisition circuit 13 and the second acquisition circuit 14 correspondingly connected to the first acquisition terminal 10 and the second acquisition terminal 19 adjacent to each other along the second direction Y are arranged at intervals along the first direction Z. At this time, the first wiring portion 151 and the second wiring portion 152 correspondingly connected to the first acquisition circuit 13 and the second acquisition circuit 14 are arranged at intervals along the first direction Z. In this way, the voltage difference between the first wiring portion 151 and the second wiring portion 152 arranged at intervals along the first direction Z can be effectively reduced compared with the prior art.

[0060] Specifically, the battery pack includes a plurality of single cells 2 arranged along the third direction X, each single cell 2 includes a first electrode 21 and a second electrode 22 arranged at intervals along the second direction Y, and the first electrodes 21 of two adjacent single cells 2 are conductively connected through the bus 3, or the second electrodes 22 of two adjacent single cells 2 are conductively connected through the bus 3. At this time, for one single cell 2, the first acquisition terminal 10 is conductively connected to the first electrode 21 through the bus 3, the second acquisition terminal 19 is conductively connected to the second electrode 22 through the bus 3, a first acquisition line 13 is conductively connected to the first acquisition terminal 10, a second acquisition line 14 is conductively connected to the second acquisition terminal 19, an end of the first acquisition line 13 away from the first acquisition terminal 10 is conductively connected to the first wiring portion 151, and an end of the second acquisition line 14 away from the second acquisition terminal 19 is conductively connected to the second wiring portion 152. The first acquisition terminal 10 and the second acquisition terminal 19 of the embodiment of the present application are arranged at intervals along the second direction Y. Therefore, it can be equivalent to that the first acquisition terminal 10 and the second acquisition terminal 19 are connected to the first electrode 21 and the second electrode 22 of the single battery 2 respectively. The first wiring portion 151 is arranged at intervals along the first direction Z with the second wiring portion 152, that is, the first wiring portion 151 and the second wiring portion 152 are arranged adjacent to each other along the first direction Z. At this time, it is equivalent to that the first wiring portion 151 is conductively connected to the first electrode 21 of the battery through the first acquisition line 13, the first acquisition terminal 10 and the bus 3, and the second wiring portion 152 is conductively connected to the second electrode 22 of the battery through the second acquisition line 14, the second acquisition terminal 19 and the bus 3. Therefore, the voltage difference between the first wiring portion 151 and the second wiring portion 152 is equivalent to the voltage difference between the first electrode 21 and the second electrode 22, that is, equivalent to the voltage difference of a single battery 2. Therefore, compared with the prior art, the present application effectively reduces the voltage difference between two adjacent wiring parts along the first direction Z, thereby facilitating the improvement of the accuracy of signal acquisition. At the same time, when the signal transmission component 15 is set, the distance between the first wiring part 151 and the second wiring part 152 can be correspondingly reduced to ensure the safe creepage distance between the two. Therefore, it is also beneficial to reduce the volume of the signal transmission component 15.

[0061] It should be noted that, in the embodiment of the present application, the signal acquisition board 1 may be a flexible circuit board, the first board body 11 may be a main board body, the first acquisition circuit 13 and the second acquisition circuit 14 correspond to the signal acquisition lines embedded in the flexible circuit board, and the first acquisition terminal 10 and the second acquisition terminal 19 may be nickel sheets.

[0062] In some embodiments, the second board 12 includes a main body 121 and a first adapter portion 122. The main body 121 is spaced apart from the first board 11 along the first direction Z and is connected to the second wiring portion 152. Part of the second acquisition circuit 14 is embedded in the main body 121 and is conductively connected to the second wiring portion 152. The first adapter portion 122 is connected to the main body 121 and is bent along the first direction Z toward one side of the main body 121 toward the first board 11. The first adapter portion 122 is connected to the first board 11 at a side away from the main body 121, and part of the second acquisition circuit 14 is embedded in the first adapter portion 122.

[0063] In the embodiment of the present application, by setting a first adapter portion 122 to connect the main body 121 and the first plate body 11, a gap can be achieved between the main body 121 and the first plate body 11. At this time, by bending the first adapter portion 122, the first plate body 11 and the main body 121 can be set at a gap along the first direction Z.

[0064] It should be noted that, since the FPC is a flexible circuit board, part of the second acquisition circuit 14 is embedded in the first adapter 122 and bends with the first adapter 122, and does not cause problems such as the breakage of the second acquisition circuit 14. At the same time, the present application is mainly to achieve the connection between the first board body 11 and the first wiring part 151, and the connection between the main body 121 of the second board body 12 and the second wiring part 152. Therefore, when the signal acquisition board 1 is flattened, the size of the first adapter 122 along the third direction X is greater than or equal to the distance between the first wiring part 151 and the second wiring part 152, which facilitates the smooth connection of the main body 121 with the second adapter 123 after the first adapter 122 is bent.

[0065] It should be noted that, in some embodiments, the first adapter portion 122 may be connected to one side of the first plate body 11 along the second direction Y, such as Fig.11 As shown, at this time, the main body 121 is folded toward the first plate body 11 along the second direction Y and drives the first adapter portion 122 to bend, so that the main body 121 can be arranged at intervals along the first adapter portion 122 .

[0066] It should also be noted that in some embodiments, the first adapter portion 122 can be connected to one side of the first plate body 11 along the third direction X, such as Fig.12 As shown, at this time, the main body 121 is folded toward the first plate body 11 along the third direction X and drives the first adapter portion 122 to bend, so that the main body 121 can be arranged at intervals along the first adapter portion 122 .

[0067] Please refer to Figure 6-Figure 10 In some embodiments, the second board 12 includes a body 121, a first adapter portion 122, and a second adapter portion 123. The body 121 is spaced apart from the first board 11 along the first direction Z and connected to the second wiring portion 152. Part of the second collection circuit 14 is embedded in the body 121 and conductively connected to the second wiring portion 152. The first adapter portion 122 is connected to the body 121 and is bent along the first direction Z toward one side of the body 121 toward the first board 11. Part of the second collection circuit 14 is embedded in the first adapter portion 122. The second adapter portion 123 is connected to the first board 11 along the second direction Y and spaced apart from the body 121 along the first direction Z. The first adapter portion 122 is connected to the second adapter portion 123 on a side away from the body 121. Part of the second collection circuit 14 is embedded in the second adapter portion 123.

[0068] In the embodiment of the present application, the second transfer portion 123 is connected to one side of the first plate 11 along the second direction Y, so that the second collection line 14 can be bent at the second transfer portion 123. At this time, the interval between the second collection line 14 and the first collection line 13 can be increased, providing a larger bending space for the second collection line 14. Fig.12 For the embodiments, the use of FPC raw materials can be effectively reduced, material utilization rate can be improved, and cost can be reduced.

[0069] It should be noted that, in the embodiment of the present application, the first adapter portion 122 is arranged on the side of the second adapter portion 123 away from the second collection terminal 19 along the third direction X, and the body 121 is connected to the side of the first adapter portion 122 away from the second adapter portion 123 along the third direction X. On the one hand, it is convenient to realize that the body 121 is bent by the first adapter portion 122 and is spaced apart from the first plate body 11 in the first direction Z. On the other hand, it can further reduce the use of FPC raw materials along the second direction Y, thereby effectively improving the utilization rate of FPC raw materials and reducing costs.

[0070] Please refer to Figure 5-Figure 8 In some embodiments, the first adapter portion 122 is spaced apart from the signal transmission component 15 along the second direction Y.

[0071] In the embodiment of the present application, the signal transmission component 15 and the first board 11 are arranged along the third direction X, and the first adapter 122 is spaced apart from the signal transmission component 15 along the second direction Y, so as to avoid the first adapter 122 interfering with the connection between the signal transmission component 15 and the first board 11 and the main body 121. At the same time, in the present embodiment, the ends of the first acquisition circuit 13 and the second acquisition circuit 14 connected to the signal acquisition component are both arranged on one side of the first adapter 122 along the second direction Y, so as to ensure that all signals collected by the first signal acquisition circuit and the second acquisition circuit 14 can be effectively transmitted to the signal transmission component 15.

[0072] like Figure 10-12 As shown, in some embodiments, there is a third direction X intersecting the first direction Z and the second direction Y, the first acquisition circuit 13 includes a first connection segment 131, the first connection segment 131 extends along the third direction X and is conductively connected to the first wiring portion 151; the second acquisition circuit 14 includes a second connection segment 141, the second connection segment 141 extends along the third direction X and is conductively connected to the second wiring portion 152.

[0073] As shown in the accompanying drawings, in the embodiment of the present application, the first connecting section 131 is arranged on a side of the first plate body 11 away from the first adapter portion 122 along the second direction Y, the second connecting section 141 is arranged on a side of the body 121 away from the first adapter portion 122 along the second direction Y, and the first connecting section 131 is arranged on a side of the first plate body 11 along the third direction X, and the second connecting section 141 is arranged on a side of the body 121 along the third direction X and is arranged opposite to the first connecting section 131. The first connecting section 131 is used to be conductively connected to the first wiring portion 151 to transmit the signal collected by the first collection circuit 13 to the outside through the first wiring portion 151, and the second connecting section 141 is used to be conductively connected to the second wiring portion 152 to transmit the signal collected by the second collection circuit 14 to the outside through the second wiring portion 152.

[0074] In some embodiments, the signal acquisition board 1 includes a plurality of first acquisition lines 13, a plurality of second acquisition lines 14, a plurality of first acquisition terminals 10 and a second acquisition terminal 19, the plurality of first acquisition lines 13 are arranged at intervals along the second direction Y, the plurality of second acquisition lines 14 are arranged at intervals, the plurality of first acquisition terminals 10 are arranged at intervals along the third direction X, and the second acquisition terminals 19 are arranged at intervals along the third direction X; the signal transmission component 15 includes a plurality of first wiring portions 151 and a plurality of second wiring portions 152, the plurality of first wiring portions 151 are arranged at intervals along the second direction Y, and the plurality of second wiring portions 152 are arranged at intervals along the second direction Y. The first connection portions 151 conductively connected to two adjacent first acquisition lines 13 are arranged adjacent to each other along the second direction Y, and the first acquisition terminals 10 conductively connected to two adjacent first acquisition lines 13 are arranged adjacent to each other along the third direction X; the second connection portions 152 conductively connected to two adjacent second acquisition lines 14 are arranged adjacent to each other along the second direction Y, and the second acquisition terminals 19 conductively connected to two adjacent second acquisition lines 14 are arranged adjacent to each other along the third direction X; the first connection portions 151 and the second connection portions 152 conductively connected to the first acquisition terminals 10 and the second acquisition terminals 19 adjacent to each other along the second direction Y are arranged adjacent to each other along the first direction Z.

[0075] In one embodiment of the present application, the signal acquisition board 1 is used for a battery pack, and the battery pack includes a plurality of single cells 2. Therefore, a plurality of first acquisition lines 13, a plurality of second acquisition lines 14, a plurality of first acquisition terminals 10 and a second acquisition terminal 19 are required. Among them, there are n single cells 2 arranged along the third direction X, and 3n+1 buses are required accordingly; when n is an odd number, the number of the first acquisition lines 13, the second acquisition lines 14, the first acquisition terminals 10 and the second acquisition terminals 19 are all (n+1) / 2; when n is an even number, the number of the first acquisition lines 13 and the first acquisition terminals 10 are all n / 2+1, and the number of the second acquisition lines 14 and the second acquisition terminals 19 are all n / 2. The first connection sections 131 of the plurality of first acquisition lines 13 are arranged at intervals along the second direction Y, and are connected to the plurality of first wiring portions 151 in a one-to-one correspondence; the second connection sections 141 of the plurality of second acquisition lines 14 are arranged at intervals along the second direction Y, and are connected to the plurality of second wiring portions 152 in a one-to-one correspondence. Among them, along the second direction Y, the adjacent first acquisition terminal 10 and the second acquisition terminal 19 correspond to the first wiring portion 151 and the second wiring portion 152 which are conductively connected through the acquisition line and are arranged at intervals along the first direction Z. At this time, the voltage difference between the first wiring portion 151 and the second wiring portion 152 which are arranged at intervals along the first direction Z can be minimized.

[0076] like Figure 5As shown, in some embodiments, along the first direction Z, the first board 11 is connected to a side of the first wiring portion 151 away from the second wiring portion 152 , and the second board 12 is connected to a side of the second wiring portion 152 away from the first wiring portion 151 .

[0077] In the embodiment of the present application, since the main body 121 is arranged with a gap from the first plate body 11 along the first direction Z only after being reversed, during the production process, the first plate body 11 and the main body 121 are initially located in the same plane, and the corresponding portion of the first connecting segment 131 is exposed from the first plate body 11, and the portion of the second connecting segment 141 is exposed from the main body 121. For the convenience of production, the first connecting segment 131 and the second connecting segment 141 are exposed on the same side of the first plate body 11 and the main body 121 in the unfolded state. Therefore, when the main body 121 is folded and opposite to the first plate body 11, in the first case, the exposed portions of the first connecting segment 131 and the second connecting segment 141 are either arranged opposite to each other; in the second case, the exposed portion of the first connecting segment 131 is located on the side of the first plate body 11 away from the main body 121, and the exposed portion of the second connecting segment 141 is located on the side of the main body 121 away from the first plate body 11. In the first case, the first plate 11 and the body 121 sandwich the first wiring portion 151 and the second wiring portion 152 for easy welding; in the second case, the first plate 11 and the body 121 are sandwiched between the first wiring portion 151 and the second wiring portion 152. In comparison, the first case and the case shown in the embodiment of the present application have better insulation.

[0078] In some embodiments, the signal acquisition board 1 also includes a first insulating layer 16, which is arranged between the first wiring portion 151 and the second wiring portion 152 along the first direction Z, and is respectively connected to the first wiring portion 151 and the second wiring portion 152; along the first direction Z, the orthographic projection of the first wiring portion 151 on the first insulating layer 16 is located on the surface of the first insulating layer 16 facing the first wiring portion 151, and the orthographic projection of the second wiring portion 152 on the first insulating layer 16 is located on the surface of the first insulating layer 16 facing the second wiring portion 152.

[0079] In the embodiment of the present application, the first insulating layer 16 is provided to be spaced between the first wiring portion 151 and the second wiring portion 152, thereby achieving effective insulation between the first wiring portion 151 and the second wiring portion 152, and at the same time increasing the creepage distance between the first wiring portion 151 and the second wiring portion 152 to prevent short circuit. In addition, the first insulating layer 16 also plays a reinforcing role, effectively spacing between the first wiring portion 151 and the second wiring portion 152, and preventing the first wiring portion 151 and the second wiring portion 152 from bending toward each other.

[0080] Please refer to Figure 5 , Figure 7-10In some embodiments, the signal acquisition board 1 further includes a second insulating layer 17 and a third insulating layer 18, the second insulating layer 17 is connected to a side of the first board body 11 away from the first wiring portion 151 along the first direction Z, and the third insulating layer 18 is connected to a side of the second board body 12 away from the second wiring portion 152 along the first direction Z.

[0081] In the embodiment of the present application, by providing the second insulating layer 17 and the third insulating layer 18, which are effectively attached to the side of the first plate 11 and the main body 121 that are opposite to each other, the insulation of the connection between the first wiring portion 151 and the first plate 11 and the insulation of the connection between the second wiring portion 152 and the second plate 12 can be further improved.

[0082] Accordingly, an electrical device according to an embodiment of the present application includes a battery pack as described in any one of the aforementioned embodiments.

[0083] It can be understood that the electric device of the embodiment of the present application can have all the technical features and corresponding beneficial effects of the above-mentioned battery pack, which will not be elaborated here.

[0084] It should be noted that the electrical devices referred to in this application may include but are not limited to backup power supplies, electrodes, electric vehicles, electric bicycles, electric motorcycles, large batteries, etc.

[0085] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0086] The above is a detailed introduction to a battery pack and an electrical device provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A battery pack, characterized in that: The device has a first direction and a second direction intersecting each other, and includes a signal acquisition board, wherein the signal acquisition board includes: A first plate body; A first collection terminal connected to the first board; A second collecting terminal connected to the first plate, the second collecting terminal being adjacent to and spaced from the first collecting terminal along the second direction; A second plate body connected to the first plate body, wherein at least a portion of the second plate body is spaced apart from the first plate body along the first direction; The signal transmission component includes a first wiring portion and a second wiring portion arranged at intervals along the first direction; the first wiring portion is connected to the first board body, and the first wiring portion is conductively connected to the first collection terminal; the second wiring portion is connected to the second board body, and the second wiring portion is conductively connected to the second collection terminal.

2. The battery pack according to claim 1, characterized in that: The signal acquisition board also includes: A first acquisition circuit is embedded in the first board and is conductively connected to the first acquisition terminal and the first wiring portion respectively; A part of the second acquisition circuit is embedded in the first board body, and another part is embedded in the second board body; the second acquisition circuit is conductively connected to the second acquisition terminal and the second wiring portion respectively.

3. The battery pack according to claim 2, characterized in that: The second plate body comprises: A body, spaced apart from the first plate along the first direction and connected to the second wiring portion, wherein a portion of the second acquisition circuit is embedded in the body and conductively connected to the second wiring portion; The first adapter is connected to the body and bent along the first direction toward the body toward the first plate. The first adapter is connected to the first plate at a side away from the body, and part of the second acquisition circuit is embedded in the first adapter.

4. The battery pack according to claim 2, characterized in that: The second plate body comprises: A body, spaced apart from the first plate along the first direction and connected to the second wiring portion, wherein a portion of the second acquisition circuit is embedded in the body and conductively connected to the second wiring portion; A first adapter portion is connected to the body and is bent along the first direction toward one side of the body toward the first plate; a portion of the second acquisition circuit is embedded in the first adapter portion; The second adapter is connected to the first plate along the second direction and spaced apart from the main body along the first direction. The side of the first adapter away from the main body is connected to the second adapter. Part of the second acquisition line is embedded in the second adapter.

5. The battery pack according to claim 4, characterized in that: The first adapter portion is spaced apart from the signal transmission component along the second direction.

6. The battery pack according to claim 5, characterized in that: The battery pack has a third direction intersecting the first direction and the second direction. The first acquisition circuit includes a first connection segment, which extends along the third direction and is conductively connected to the first wiring portion. The second acquisition circuit includes a second connection segment, which extends along the third direction and is conductively connected to the second wiring portion.

7. The battery pack according to claim 6, characterized in that: The signal acquisition board comprises a plurality of first acquisition circuits, a plurality of second acquisition circuits, a plurality of first acquisition terminals and a second acquisition terminal, the plurality of first acquisition circuits are arranged at intervals along the second direction, the plurality of second acquisition circuits are arranged at intervals, the plurality of first acquisition terminals are arranged at intervals along the third direction, and the second acquisition terminals are arranged at intervals along the third direction; The signal transmission component comprises a plurality of first wiring portions and a plurality of second wiring portions, wherein the plurality of first wiring portions are arranged at intervals along the second direction, and the plurality of second wiring portions are arranged at intervals along the second direction; Two first connection portions connected to two adjacent first acquisition lines are adjacently arranged along the second direction, and two first acquisition terminals connected to two adjacent first acquisition lines are adjacently arranged along the third direction; Two second wiring portions connected to two adjacent second acquisition lines are adjacently arranged along the second direction, and two second acquisition terminals connected to two adjacent second acquisition lines are adjacently arranged along the third direction; The first wiring portion and the second wiring portion, which are conductively connected to the first collecting terminal and the second collecting terminal adjacent to each other along the second direction, are adjacently arranged along the first direction.

8. The battery pack according to any one of claims 1 to 7, characterized in that: Along the first direction, the first board is connected to a side of the first wiring portion away from the second wiring portion, and the second board is connected to a side of the second wiring portion away from the first wiring portion.

9. The battery pack according to claim 8, characterized in that: The signal acquisition board also includes a first insulating layer, which is arranged between the first wiring portion and the second wiring portion along the first direction and is connected to the first wiring portion and the second wiring portion respectively; along the first direction, the orthographic projection of the first wiring portion on the first insulating layer is located within the surface of the first insulating layer facing the first wiring portion, and the orthographic projection of the second wiring portion on the first insulating layer is located within the surface of the first insulating layer facing the second wiring portion.

10. The battery pack according to claim 9, characterized in that: The signal acquisition board also includes: a second insulating layer connected to a side of the first plate away from the first wiring portion along the first direction; The third insulating layer is connected to a side of the second plate away from the second wiring portion along the first direction.

11. An electrical device, characterized in that: Comprising a battery pack as described in any one of claims 1-10.

Images