Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, the battery pack comprises a signal acquisition board, the signal acquisition board comprises a board body, a voltage acquisition circuit, a temperature acquisition circuit and a connector, and the board body has a width direction and comprises a first wiring part and a second wiring part which are arranged at an interval along the width direction; the voltage acquisition circuit is at least partially embedded in the first wiring part, the temperature acquisition circuit is at least partially embedded in the second wiring part, the connector is connected with the board body, the connector comprises a first interface and a second interface, and the first interface and the second interface are arranged at an interval along the width direction; wherein the first interface is configured to be connected with a voltage acquisition line, and the second interface is configured to be connected with a temperature acquisition line. According to the application, the first wiring part and the second wiring part are arranged at an interval, so that the temperature acquisition circuit and the voltage acquisition circuit are independently wired in different regions and the interval is increased, the voltage difference interference is effectively reduced, and the accuracy of signal acquisition is improved.

Description

Technical Field

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

[0002] Power batteries usually use FPC (Flexible Printed Circuit) to collect the voltage and temperature data of the power battery's single cells to obtain the working status of the power battery. Among them, FPC connects different battery cells through voltage acquisition lines to collect voltage signals, and connects temperature acquisition elements through temperature acquisition lines to collect temperature signals. The temperature acquisition line and the adjacent voltage acquisition line are routed in sequence and routed side by side to the connector interface of the FPC, resulting in a high voltage difference between the temperature acquisition line and the adjacent voltage sampling line, affecting the sampling accuracy. Utility Model Content

[0003] Purpose of the utility model: An embodiment of the present application provides a battery pack, aiming to solve the problem that the voltage difference between the existing temperature acquisition line and the adjacent voltage sampling line is high, affecting the sampling accuracy; 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 includes: a signal acquisition board, wherein the signal acquisition board includes:

[0005] The plate body has a width direction, and the plate body includes a first routing portion and a second routing portion spaced apart along the width direction;

[0006] A voltage collection circuit is at least partially embedded in the first wiring portion;

[0007] A temperature collection circuit is at least partially embedded in the second wiring portion;

[0008] A connector connected to the board; the connector includes a first interface and a second interface, the first interface and the second interface are arranged at intervals along the width direction; wherein the first interface is configured to be connected to the voltage acquisition circuit, and the second interface is configured to be connected to the temperature acquisition circuit.

[0009] In some embodiments, the board body also includes at least one terminal connecting portion, which is connected to the first routing portion along the width direction; one of the terminal connecting portions is arranged between the first routing portion and the second routing portion, and is respectively connected to the first routing portion and the second routing portion.

[0010] In some embodiments, the signal acquisition board further includes:

[0011] A voltage collection terminal connected to the terminal connection portion, wherein the voltage collection terminal is electrically connected to an end of the voltage collection circuit away from the connector;

[0012] A temperature collection element is connected to the board; the temperature collection element is electrically connected to an end of the temperature collection circuit away from the connector, and the temperature collection element is spaced apart from the voltage collection terminal; along the width direction, the temperature collection element is spaced apart from the first routing portion.

[0013] In some embodiments, the signal acquisition board includes a plurality of the voltage acquisition terminals, a plurality of the temperature acquisition elements, a plurality of the voltage acquisition lines and a plurality of the temperature acquisition lines, the board body has a length direction intersecting with the width direction, a plurality of the voltage acquisition terminals are arranged at intervals along the length direction, at least one temperature acquisition element is arranged between two adjacent voltage acquisition terminals, each of the voltage acquisition lines is electrically connected to one of the voltage acquisition terminals, and every two of the temperature acquisition lines are electrically connected to one of the temperature acquisition elements.

[0014] In some embodiments, the connector includes a plurality of the first interfaces and a plurality of the second interfaces, each of the first interfaces is connected to a voltage acquisition circuit; the second interface includes a first sub-interface and a second sub-interface adjacently arranged along the width direction; two temperature acquisition circuits are connected to a temperature acquisition element, one temperature acquisition circuit is connected to the first sub-interface, and the other temperature acquisition circuit is connected to the second sub-interface; the plurality of the first interfaces include a reference interface, and the reference interface is adjacently arranged to at least one of the second interfaces.

[0015] In some embodiments,

[0016] The first sub-interface is a negative electrode interface, and the second sub-interface is a positive electrode interface; the voltage of the reference interface is a V, the voltage of the first sub-interface of the second interface adjacent to the reference interface is b V, and the voltage of the second sub-interface of the second interface adjacent to the reference interface is c V;

[0017] When a=b, the first sub-interface is arranged adjacent to the reference interface;

[0018] When a≠b and |ab|<|ac|, the first sub-interface is arranged adjacent to the reference interface;

[0019] When a≠b and |ac|<|ab|, the second sub-interface is arranged adjacent to the reference interface.

[0020] In some embodiments, a plurality of the second interfaces are arranged at intervals in a direction away from the reference interface, and a plurality of the first interfaces other than the reference interface are arranged at intervals in a direction away from the reference interface from the second interfaces.

[0021] In some embodiments, the signal acquisition board also includes a flexible third routing portion, which is arranged on a side of the second routing portion away from the first routing portion, and has a first connection end and a second connection end, the first connection end is connected to the second routing portion, and the second connection end is connected to one of the multiple temperature acquisition elements; at least parts of two of the multiple temperature acquisition lines are embedded in the third routing portion and connected to the temperature acquisition element connected to the third routing portion.

[0022] In some embodiments, the first wiring portion and the terminal connecting portion, the terminal connecting portion and the second wiring portion, and the second wiring portion and the third wiring portion are all connected in an integrated manner.

[0023] 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.

[0024] Beneficial effect: Compared with the prior art, a battery pack according to an embodiment of the present application includes a signal acquisition board, the signal acquisition board includes a board body, a voltage acquisition circuit, a temperature acquisition circuit and a connector, the board body has a width direction, the board body includes a first routing portion and a second routing portion spaced apart along the width direction; the voltage acquisition circuit is at least partially embedded in the first routing portion, the temperature acquisition circuit is at least partially embedded in the second routing portion, and the connector is connected to the board body. The connector includes a first interface and a second interface, the first interface and the second interface are spaced apart along the width direction; wherein the first interface is configured to be connected to the voltage acquisition circuit, and the second interface is configured to be connected to the temperature acquisition circuit. The present application realizes independent routing of the temperature acquisition line and the voltage acquisition line in different regions by setting the first routing portion and the second routing portion, effectively increases the interval between the temperature acquisition line and the voltage acquisition line, avoids the temperature acquisition line and the voltage difference acquisition line from being sequentially joined and wired, thereby effectively reducing the voltage difference interference and improving the accuracy of signal acquisition.

[0025] Compared with the prior art, an electric device in an 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 in an embodiment of the present application includes all the technical features and technical effects of the battery pack in the above embodiments, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 1 is a schematic diagram of the overall structure of the signal acquisition board of an embodiment of the present application;

[0028] Figure 2 It is a structural schematic diagram of an embodiment of a signal acquisition board of an embodiment of the present application;

[0029] Figure 3 yes Figure 2 A schematic diagram of the structure of a signal acquisition board in an embodiment of the present invention applied in a battery pack;

[0030] Figure 4 It is a structural schematic diagram of another embodiment of the signal acquisition board of the embodiment of the present application;

[0031] Figure 5 yes Figure 4 A schematic diagram of the structure of a signal acquisition board in an embodiment of the present invention applied in a battery pack;

[0032] Figure 6 This is a schematic diagram of an interface definition of a connector according to an embodiment of the present application;

[0033] Figure 7 This is another interface definition diagram of the connector according to an embodiment of the present application.

[0034] Figure numerals: 1, signal acquisition board; 11, board body; 111, first routing portion; 112, second routing portion; 113, terminal connection portion; 12, voltage acquisition circuit; 13, temperature acquisition circuit; 14, connector; 141, first interface; 1411, reference interface; 142, second interface; 1421, first sub-interface; 1422, second sub-interface; 15, voltage acquisition terminal; 16, temperature acquisition element; 17, third routing portion; X, length direction; Y, width direction. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] In the field of power batteries, it is necessary to use acquisition lines to collect the voltage and temperature signals of the battery cells in the battery pack. Different acquisition lines connect different battery cells, and the acquisition lines are connected to the connector and collect the voltage signals of all battery cells. In addition, N (generally 2 to 4) temperature acquisition components need to be arranged in the battery pack, such as NTC thermistors (NTC: Negative Temperature Coefficient, negative temperature coefficient, refers to an abnormal temperature coefficient material whose resistance value decreases with increasing temperature), or other NTC modules. The end of the acquisition line away from the battery cell needs to be connected to a connector that can be interconnected with the BMS (Battery Management System) control unit. At present, the temperature acquisition line and the adjacent voltage acquisition line are routed in sequence, the temperature acquisition line and the adjacent voltage acquisition line are routed in sequence, and the temperature acquisition line and the adjacent voltage acquisition line are routed side by side to the connector port. The corresponding problem is that when the position of the temperature acquisition element changes, the interface definition of the corresponding connector will be affected, and the interface definition needs to be modified synchronously so that the order of the interface definition corresponds to the arrangement order of the temperature acquisition circuit and the voltage acquisition circuit; in addition, the voltage difference between the temperature acquisition circuit and the adjacent voltage acquisition circuit is high, which affects the accuracy of signal acquisition.

[0038] In view of this, an embodiment of the present application provides a battery pack, aiming to solve at least one of the above problems.

[0039] Please refer to Figure 1-Figure 5 The embodiment of the present application provides a battery pack, including a signal acquisition board 1, the signal acquisition board 1 includes a board body 11, a voltage acquisition circuit 12, a temperature acquisition circuit 13 and a connector 14, the board body 11 has a width direction Y, and the board body 11 includes a first wiring portion 111 and a second wiring portion 112 arranged at intervals along the width direction Y. The voltage acquisition circuit 12 is at least partially embedded in the first wiring portion 111, the temperature acquisition circuit 13 is at least partially embedded in the second wiring portion 112, and the connector 14 is connected to the board body 11. The connector 14 includes a first interface 141 and a second interface 142, and the first interface 141 and the second interface 142 are arranged at intervals along the width direction Y; wherein the first interface 141 is configured to be connected to the voltage acquisition circuit 12, and the second interface 142 is configured to be connected to the temperature acquisition circuit 13.

[0040] In the embodiment of the present application, by setting the first routing part 111 and the second routing part 112, the temperature acquisition line and the voltage acquisition line are independently routed in different regions, effectively increasing the interval between the temperature acquisition line and the voltage acquisition line, avoiding the temperature acquisition line 13 and the voltage difference acquisition line from being routed in sequence, thereby effectively reducing the voltage difference interference and improving the accuracy of signal acquisition. At the same time, the position of the routing part is determined, and the interface position of the connector 14 can be determined accordingly, and the interface definition does not need to be modified later, which can effectively improve production efficiency.

[0041] Specifically, in the embodiment of the present application, the first routing portion 111 and the second routing portion 112 are arranged at intervals along the width direction Y, so it can be understood without doubt that there is an interval between the first routing portion 111 and the second routing portion 112. At the same time, the voltage acquisition circuit 12 is embedded in the first routing portion 111, and the temperature acquisition circuit 13 is embedded in the second routing portion 112. Usually, the voltage acquisition circuit 12 is embedded in the middle of the first routing portion 111, and there is a certain distance from the edge of the first routing portion 111, and the distance is at least greater than or equal to the arrangement interval between two adjacent voltage acquisition circuits 12; similarly, the temperature acquisition circuit 13 is also at a certain distance from the edge of the second routing portion 112, and the distance is at least greater than or equal to the arrangement interval between two adjacent acquisition circuits. Therefore, it can be understood that, in the embodiment of the present application, there is an interval between the voltage acquisition circuit 12 and the temperature acquisition circuit 13, and the interval is at least greater than or equal to twice the wiring spacing of the adjacent wirings, so it can reduce the interference of the voltage difference of the adjacent sampling circuits and improve the accuracy of signal acquisition.

[0042] Furthermore, the present application separates and independently routes the temperature acquisition circuit 13 and the voltage acquisition circuit 12, and at the same time, the routing area is determined and unique. After the corresponding temperature acquisition unit changes position, the temperature acquisition circuit 13 is still wired in the second routing portion 112. Therefore, the first interface 141 and the second interface 142 on the corresponding connector 14 can define the interface of the connector 14 in advance according to the setting of the routing portion. After the temperature acquisition unit changes position, there is no need to change the interface definition, which effectively improves production efficiency.

[0043] In some embodiments, the board body 11 also includes at least one terminal connecting portion 113, and the terminal connecting portion 113 is connected to the first wiring portion 111 along the width direction Y; one of the terminal connecting portions 113 is arranged between the first wiring portion 111 and the second wiring portion 112, and is respectively connected to the first wiring portion 111 and the second wiring portion 112.

[0044] In the embodiment of the present application, the terminal connection part 113 is used to connect the voltage collection terminal 15, and the voltage collection terminal 15 is used to connect to the battery cell to collect the voltage information on the battery cell. One or two terminal connection parts 113 can be provided. When there is only one terminal connection part 113, the terminal connection part 113 is preferably arranged between the first wiring part 111 and the second wiring part 112, which can play the role of spacing the first wiring part 111 and the second wiring part 112, ensuring that there is a large spacing between the first wiring part 111 and the second wiring part 112, so as to further reduce the interference of the voltage difference between the voltage collection circuit 12 and the temperature collection circuit 13, and effectively improve the accuracy of signal collection. When there are two terminal connection parts 113, at this time, the two terminal connection parts 113 are arranged on both sides of the plate body 11 along the width direction Y and connected to the plate body 11, so that the voltage signals of more battery cells can be collected.

[0045] In some embodiments, the signal acquisition board 1 further includes: a voltage acquisition terminal 15 and a temperature acquisition element 16, the voltage acquisition terminal 15 is connected to the terminal connection portion 113, and the voltage acquisition terminal 15 is electrically connected to an end of the voltage acquisition circuit 12 away from the connector 14; the temperature acquisition element 16 is connected to the board body 11, and the temperature acquisition element 16 is electrically connected to an end of the temperature acquisition circuit 13 away from the connector 14, and the temperature acquisition element 16 is spaced apart from the voltage acquisition terminal 15; along the width direction Y, the temperature acquisition element 16 is spaced apart from the first routing portion 111.

[0046] In the embodiment of the present application, the voltage acquisition terminal 15 is connected to the terminal connection portion 113 and is conductively connected to the voltage acquisition circuit 12, and is used to connect to the battery cell to collect the voltage signal of the battery cell. The temperature acquisition element 16 is used to be set at a corresponding position according to the demand for temperature acquisition, thereby collecting temperature information in the battery pack and monitoring the temperature of the battery pack in real time.

[0047] It should be noted that the temperature collection element 16 and the voltage collection terminal 15 are arranged at a distance, so that the information collected by the two elements do not interfere with each other.

[0048] It should also be noted that the temperature acquisition element 16 is spaced apart from the first wiring portion 111 along the width direction Y. At this time, it can be understood that the temperature acquisition element 16 can be set on the side of the second wiring portion 112 away from the first wiring portion 111; or a notch is set in the terminal connecting portion 113, and the notch is set between two adjacent voltage acquisition terminals 15 along the length direction X. At this time, the size of the signal acquisition board 1 in the width direction Y can be reduced; the setting of the position of the temperature acquisition element 16 in the present application can achieve direct and effective contact between the temperature acquisition element 16 and the sampling point, thereby effectively ensuring the accuracy of the sampled temperature.

[0049] In some embodiments, the signal acquisition board 1 includes a plurality of voltage acquisition terminals 15, a plurality of temperature acquisition elements 16, a plurality of voltage acquisition lines 12, and a plurality of temperature acquisition lines 13. The board body 11 has a length direction X intersecting with the width direction Y. The plurality of voltage acquisition terminals 15 are arranged at intervals along the length direction X. At least one temperature acquisition element 16 is arranged between two adjacent voltage acquisition terminals 15. Each voltage acquisition line 12 is electrically connected to one voltage acquisition terminal 15, and every two temperature acquisition lines 13 are electrically connected to one temperature acquisition element 16.

[0050] In the embodiment of the present application, multiple voltage acquisition terminals 15 are used to connect to multiple battery cells to collect voltage signals of multiple battery cells, and multiple temperature acquisition elements 16 are arranged according to needs to realize the acquisition and monitoring of multiple temperature points in the battery pack. Multiple voltage acquisition lines 12 are electrically connected to multiple voltage acquisition terminals 15 in a one-to-one correspondence, and multiple temperature acquisition lines 13 are electrically connected to temperature acquisition elements 16 in a one-to-one correspondence, thereby realizing the effective transmission of voltage signals and temperature signals.

[0051] In some embodiments, the connector 14 includes multiple first interfaces 141 and multiple second interfaces 142, each of the first interfaces 141 is connected to one of the voltage acquisition lines 12; the second interface 142 includes a first sub-interface 1421 and a second sub-interface 1422 that are adjacently arranged along the width direction Y; two of the temperature acquisition lines 13 connected to one of the temperature acquisition elements 16, one temperature acquisition line 13 is connected to the first sub-interface 1421, and the other temperature acquisition line 13 is connected to the second sub-interface 1422; multiple first interfaces 141 include a reference interface 1411, and the reference interface 1411 is adjacently arranged to at least one of the second interfaces 142.

[0052] In the embodiment of the present application, the first interface 141 is used to connect the voltage acquisition circuit 12, and the second interface 142 is used to connect the temperature acquisition circuit 13. The reference interface 1411 is used to connect the voltage acquisition circuit 12 with the smallest voltage in a group of battery cells. At this time, the corresponding second interface 142, that is, the interface connected to the temperature acquisition circuit 13, is set adjacent to the reference interface 1411, so that the voltage difference between the two interfaces can be minimized. Since the voltages of the remaining first interfaces 141 are all greater than the voltage of the reference interface 1411, the voltage difference between the reference interface 1411 and the second interface 142 is minimized. At this time, the interference of the voltage difference at the interface of the connector 14 on signal acquisition can be reduced.

[0053] In some embodiments, the first sub-interface 1421 is a negative interface, and the second sub-interface 1422 is a positive interface; the voltage of the reference interface 1411 is a V, the voltage of the first sub-interface 1421 of the second interface 142 adjacent to the reference interface 1411 is b V, and the voltage of the second sub-interface 1422 of the second interface 142 adjacent to the reference interface 1411 is c V; when a=b, the first sub-interface 1421 is adjacent to the reference interface 1411; when a≠b and |ab|<|ac|, the first sub-interface 1421 is adjacent to the reference interface 1411; when a≠b and |ac|<|ab|, the second sub-interface 1422 is adjacent to the reference interface 1411.

[0054] In the embodiment of the present application, through the above wiring logic, the temperature acquisition circuit 13 whose voltage difference between the two circuits of the temperature acquisition element 16 and the voltage of the voltage acquisition circuit 12 corresponding to the reference interface 1411 is the smallest is routed adjacent to the voltage acquisition circuit 12 connected to the reference interface 1411, and the interface of the corresponding connector 14 is defined as the corresponding position. In this way, the voltage difference between the temperature acquisition circuit 13 and the adjacent voltage acquisition circuit 12 can be controlled to be low, thereby reducing the interference of the voltage difference during signal acquisition, and effectively improving the accuracy of signal acquisition.

[0055] Specifically, each temperature acquisition element 16 leads to two adjacent temperature acquisition lines 13, the two temperature acquisition lines 13 are respectively a positive line and a negative line, and the corresponding two temperature acquisition lines 13 (positive line and negative line) are respectively connected to the connector 14 through the first sub-interface 1421 and the second sub-interface 1422. Among them, the positive line is connected to the positive interface, and the negative line is connected to the negative interface. In this process, by judging the voltage difference between the voltage of the positive interface, the negative interface and the reference interface 1411, the specific defined positions of the first sub-interface 1421 and the second sub-interface 1422 on the connector 14 are determined, and correspondingly, it is determined whether the positive line or the negative line is adjacent to the reference voltage acquisition line 12. The specific judgment logic is: when the voltage connected to the first sub-interface 1421 (negative interface) is equal to the voltage connected to the reference interface 1411, along the width direction Y, the first sub-interface 1421 is arranged on one side of the reference interface 1411 and adjacent to the reference interface 1411, and the second sub-interface 1422 (positive interface) is arranged on the side of the first sub-interface 1421 away from the reference interface 1411; correspondingly, the negative line is arranged on one side of the reference voltage acquisition line 12, and the positive line is arranged on the side of the negative line away from the reference voltage acquisition line 12. When the voltage connected to the first sub-interface 1421 is not equal to the voltage connected to the reference interface 1411, the voltage difference between the first sub-interface 1421 and the reference interface 1411, and the voltage difference between the second sub-interface 1422 and the reference interface 1411 are determined respectively, and the two voltage differences are compared, wherein the sub-interface with a smaller voltage difference with the reference interface 1411 is set on one side of the reference interface 1411 and adjacent to the reference interface 1411. For example, when the voltage difference between the first sub-interface 1421 and the reference interface 1411 is smaller than the voltage difference between the second sub-interface 1422 and the reference interface 1411, the first sub-interface 1421 and the reference interface 1411 are arranged adjacent to each other; when the voltage difference between the first sub-interface 1421 and the reference interface 1411 is larger than the voltage difference between the second sub-interface 1422 and the reference interface 1411, the second sub-interface 1422 and the reference interface 1411 are arranged adjacent to each other. The above interface settings correspond to the circuit arrangement, which can reduce the voltage difference between the adjacent temperature acquisition circuit 13 and the voltage acquisition circuit 12, thereby reducing the voltage difference interference and improving the signal acquisition accuracy.

[0056] In some embodiments, a plurality of the second interfaces 142 are arranged at intervals in a direction away from the reference interface 1411 , and a plurality of the first interfaces 141 other than the reference interface 1411 are arranged at intervals in a direction away from the reference interface 1411 and away from the second interfaces 142 .

[0057] In the embodiment of the present application, since the first routing portion 111 and the second routing portion 112 are arranged at intervals, and the positions of the first routing portion 111 and the second routing portion 112 are fixed, the corresponding positions of the temperature acquisition circuit 13 and the voltage acquisition circuit 12 are also fixed. At this time, by setting the reference interface 1411 between the first interface 141 and the remaining second interface 142, and the first interface 141 corresponds to the position of the second routing portion 112, and the second interface 142 corresponds to the position of the first routing portion 111, the wiring of the temperature acquisition circuit 13 and the voltage acquisition circuit 12 is facilitated.

[0058] In some embodiments, the signal acquisition board 1 also includes a flexible third routing portion 17, and the third routing portion 17 is arranged on a side of the second routing portion 112 away from the first routing portion 111, and the third routing portion 17 has a first connection end and a second connection end, the first connection end is connected to the second routing portion 112, and the second connection end is connected to one of the multiple temperature acquisition elements 16; at least two of the multiple temperature acquisition lines 13 are partially embedded in the third routing portion 17 and connected to the temperature acquisition element 16 connected to the third routing portion 17.

[0059] In the embodiment of the present application, by providing a flexible third routing portion 17, the position of the third routing portion 17 connected to the temperature collection element 16 can be adjusted accordingly according to different temperature collection points, and then the third routing portion 17 is bent and folded, so that the position of the temperature collection element 16 can be flexibly adjusted, and at this time, the interface definition on the connector 14 can be unaffected. Therefore, there is no need to synchronously modify the interface definition of the connector 14, which effectively improves production efficiency.

[0060] like Figure 1 As shown, in some embodiments, along the length direction X, the size of the third routing portion 17 is L mm; along the width direction Y, the size of the board body 11 is D mm, and the size of the third routing portion 17 is F mm, satisfying: L≥D+F.

[0061] In the embodiment of the present application, the size of the third wiring portion 17 is set so as to ensure that the temperature collection element 16 connected to the third wiring portion 17 can be moved from one side of the board 11 to the other side along the width direction Y according to the sampling requirements, and the third wiring portion 17 has a sufficient length to be folded and cross the board 11. For a specific folding method, please refer to Figure 1 The dashed line in the middle, or Figure 4 and Figure 5 Of course, the third wiring portion 17 can also be folded along the length direction X to adjust the position of the temperature collection element 16 connected to the third wiring portion 17 .

[0062] In some embodiments, the first wiring portion 111 and the terminal connecting portion 113 , the terminal connecting portion 113 and the second wiring portion 112 , and the second wiring portion 112 and the third wiring portion 17 are all connected in an integrated manner.

[0063] In the embodiment of the present application, the integrated connection method can realize that the signal acquisition board 1 is made by directly corresponding cutting of the same FPC raw material, and can realize that the surface of the signal acquisition board 1 is flat and the structural strength is high.

[0064] 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.

[0065] It can be understood that the electric device of the embodiment of the present application includes all the technical features and technical effects of the battery pack of the aforementioned embodiment, which will not be repeated here.

[0066] 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, computers, large batteries, etc.

[0067] 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.

[0068] 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: include: A signal acquisition board (1), the signal acquisition board (1) comprising: A plate body (11) has a width direction (Y), and the plate body (11) comprises a first routing portion (111) and a second routing portion (112) arranged at intervals along the width direction (Y); A voltage collection circuit (12) is at least partially embedded in the first wiring portion (111); A temperature collection circuit (13) is at least partially embedded in the second wiring portion (112); A connector (14) connected to the board body (11); the connector (14) comprises a first interface (141) and a second interface (142), the first interface (141) and the second interface (142) being arranged at intervals along the width direction (Y); wherein the first interface (141) is configured to be connected to the voltage acquisition circuit (12), and the second interface (142) is configured to be connected to the temperature acquisition circuit (13).

2. The battery pack according to claim 1, characterized in that: The board body (11) further comprises at least one terminal connection portion (113), wherein the terminal connection portion (113) is connected to the first wiring portion (111) along the width direction (Y); one of the terminal connection portions (113) is arranged between the first wiring portion (111) and the second wiring portion (112), and is respectively connected to the first wiring portion (111) and the second wiring portion (112).

3. The battery pack according to claim 2, characterized in that: The signal acquisition board (1) further comprises: A voltage collection terminal (15) connected to the terminal connection portion (113), the voltage collection terminal (15) being electrically connected to an end of the voltage collection circuit (12) away from the connector (14); A temperature collection element (16) is connected to the plate body (11); the temperature collection element (16) is electrically connected to an end of the temperature collection circuit (13) away from the connector (14); the temperature collection element (16) and the voltage collection terminal (15) are arranged at intervals; along the width direction (Y), the temperature collection element (16) and the first wiring portion (111) are arranged at intervals.

4. The battery pack according to claim 3, characterized in that: The signal acquisition board (1) comprises a plurality of voltage acquisition terminals (15), a plurality of temperature acquisition elements (16), a plurality of voltage acquisition lines (12) and a plurality of temperature acquisition lines (13); the board body (11) has a length direction (X) intersecting with the width direction (Y); the plurality of voltage acquisition terminals (15) are arranged at intervals along the length direction (X); at least one temperature acquisition element (16) is arranged between two adjacent voltage acquisition terminals (15); each voltage acquisition line (12) is electrically connected to one voltage acquisition terminal (15); and every two temperature acquisition lines (13) are electrically connected to one temperature acquisition element (16).

5. The battery pack according to claim 4, characterized in that: The connector (14) comprises a plurality of the first interfaces (141) and a plurality of the second interfaces (142), each of the first interfaces (141) being connected to one of the voltage acquisition circuits (12); the second interface (142) comprising a first sub-interface (1421) and a second sub-interface (1422) being adjacently arranged along the width direction (Y); two of the temperature acquisition circuits (13) being connected to one of the temperature acquisition elements (16), one of the temperature acquisition circuits (13) being connected to the first sub-interface (1421) and the other of the temperature acquisition circuits (13) being connected to the second sub-interface (1422); and the plurality of the first interfaces (141) comprising a reference interface (1411), the reference interface (1411) being adjacently arranged to at least one of the second interfaces (142).

6. The battery pack according to claim 5, characterized in that: The first sub-interface (1421) is a negative electrode interface, and the second sub-interface (1422) is a positive electrode interface; the voltage of the reference interface (1411) is a V, the voltage of the first sub-interface (1421) of the second interface (142) adjacent to the reference interface (1411) is b V, and the voltage of the second sub-interface (1422) of the second interface (142) adjacent to the reference interface (1411) is c V; When a=b, the first sub-interface (1421) is arranged adjacent to the reference interface (1411); When a≠b and |ab|<|ac|, the first sub-interface (1421) is arranged adjacent to the reference interface (1411); When a≠b and |ac|<|ab|, the second sub-interface (1422) is arranged adjacent to the reference interface (1411).

7. The battery pack according to claim 6, characterized in that: A plurality of the second interfaces (142) are arranged at intervals in a direction away from the reference interface (1411), and a plurality of the first interfaces (141) other than the reference interface (1411) are arranged at intervals in a direction away from the reference interface (1411) in a direction away from the second interfaces (142).

8. The battery pack according to claim 4, characterized in that: The signal acquisition board (1) further comprises a flexible third wiring portion (17), the third wiring portion (17) being arranged on a side of the second wiring portion (112) away from the first wiring portion (111), the third wiring portion (17) having a first connection end and a second connection end, the first connection end being connected to the second wiring portion (112), and the second connection end being connected to one of the plurality of temperature acquisition elements (16); at least a portion of two of the plurality of temperature acquisition lines (13) are embedded in the third wiring portion (17) and connected to the temperature acquisition element (16) connected to the third wiring portion (17).

9. The battery pack according to claim 8, characterized in that: The first wiring portion (111) and the terminal connecting portion (113), the terminal connecting portion (113) and the second wiring portion (112), and the second wiring portion (112) and the third wiring portion (17) are all connected in an integrated manner.

10. An electrical device, characterized in that: Comprising a battery pack as described in any one of claims 1-9.

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