CN217655979U - Sampling structure and battery pack - Google Patents

Abstract

The present application discloses a sampling structure and a battery pack. The sampling structure is used for a battery pack. The battery pack includes a first battery module and a second battery module. The sampling structure includes a battery management system and a sampling connection strip. The battery management system is arranged between the first battery module and the second battery module. During the time, the sampling connecting strip is connected to the battery management system, and the sampling connecting strip is located on the first battery module and the second battery module, and is connected with the electrodes of the first battery module and the second battery module. In this way, the sampling connecting strips are collected from two sides to the middle and connected to the battery management system, so that the length of the sampling structure loop is short and the sampling cost is reduced.

Description

Sampling structure and battery pack

technical field

The present application relates to the technical field of battery packs, and in particular, to a sampling structure and a battery pack.

Background technique

At present, in order to reduce costs and reduce the number of components, battery packs usually use large modules or no-module designs. Most sampling battery management systems for battery packs are centrally arranged or placed at one end of the module. The sampling loop of the sampling battery management system is longer and the cost is higher.

Utility model content

In view of this, the present application provides a sampling structure and a battery pack, which solve the problems of long sampling loop and high cost of the existing sampling structure.

The application provides a sampling structure for a battery pack, the battery pack includes a first battery module and a second battery module arranged in sequence, and the sampling structure includes:

a battery management system, disposed between the first battery module and the second battery module;

Connect the sampling connecting strip of the battery management system, the sampling connecting strip is arranged on the top of the first battery module and the second battery module to connect with the first battery module and the second battery module Electrode connections at the top of the group.

In the sampling structure of the embodiment of the present application, the battery pack includes a first battery module and a second battery module, the sampling structure includes a battery management system and a sampling connecting strip, and the battery management system is arranged on the first battery module and the second battery module. Between the groups, the sampling connecting strip is connected to the battery management system, and the sampling connecting strip is located on the top of the first battery module and the second battery module, and is connected with the electrodes of the first battery module and the second battery module. In this way, the sampling connecting strip is collected from two sides to the middle and connected to the battery management system, the length of the sampling loop is short, and the sampling cost is reduced.

In some embodiments, the sampling structure includes a sampling connector, the sampling connector is disposed at the lower part of the sampling connecting bar and connected with the battery management system.

In some embodiments, the battery management system includes:

circuit board;

A sampling interface, the sampling interface is arranged on the long side of the circuit board near the sampling connecting strip.

In some embodiments, the sampling connecting strips include a plurality of sampling connecting strips, the sampling connecting strips are arranged at intervals along the vertical direction of the length of the sampling connecting strips, and each sampling connecting strip is connected by one of the sampling connectors A corresponding setting of the sampling interface.

In some embodiments, the sampling connection strips include 4, the first interval between the first sampling connection strip and the second sampling connection strip is equal to the second interval between the third sampling connection strip and the fourth sampling connection strip, and the The third interval between the second sampling connection bar and the third sampling connection bar is greater than the first interval.

In certain embodiments, the battery management system further includes:

A communication interface, the communication interface is arranged on the short side of the circuit board.

The present application provides a battery pack, the battery pack includes a first battery module, a second battery module and the sampling structure described in any one of the above, wherein the sampling structure is arranged on the first battery module and the sampling structure. between the second battery modules.

In certain embodiments, the battery pack further includes:

A metal casing, the metal casing is located between the first battery module and the second battery module, and the battery management system is located in the metal casing.

In certain embodiments, the metal housing includes:

a plurality of first surfaces, wherein the plurality of first surfaces are respectively attached to the first battery module and the second battery module;

a plurality of second surfaces, wherein one of the second surfaces is provided with a plurality of first through holes, a plurality of the first surfaces and a plurality of the second surfaces enclose a receiving space, and the battery management system is located in the receiving space inside and the sampling interface of the battery management system is aligned with the first through hole;

A plurality of third surfaces, the third surfaces are provided with a plurality of second through holes, and the communication interface of the battery management system faces the third surfaces.

In certain embodiments, the metal housing further comprises:

A horizontal plate, the horizontal plate is located in the accommodating space and divided into a plurality of the accommodating spaces, and the battery management system is located in one of the accommodating spaces.

Additional aspects and advantages of the present application will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a sampling structure according to an embodiment of the present application;

2 is a schematic structural diagram of a battery management system according to an embodiment of the present application;

3 is a schematic structural diagram of a battery pack according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a metal case according to an embodiment of the present application.

Description of main component symbols:

Battery pack 1000, sampling structure 100, battery management system 110, circuit board 111, sampling interface 112, communication interface 113, sampling connecting strip 120, sampling connector 130, first battery module 200, second battery module 300, metal The casing 400 , the first surface 410 , the horizontal plate 420 , the second surface 430 , the first through hole 431 , the third surface 440 , and the second through hole 441 .

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present application, and should not be construed as a limitation on the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the application. Furthermore, this application may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Please refer to FIGS. 1-4 together. The embodiment of the present application provides a sampling structure 100. The sampling structure 100 is used for a battery pack 1000. The battery pack 1000 includes a first battery module 200 and a second battery module 300 arranged in sequence. , the sampling structure 100 includes a battery management system 110 and a sampling connection bar 120 . The battery management system 110 is arranged between the first battery module 200 and the second battery module 300 , the sampling connection bar 120 is connected to the battery management system 110 , and the sampling connection bar 120 is arranged between the first battery module 200 and the second battery module 300, and connected to the electrodes on the tops of the first battery module 200 and the second battery module 300.

In the sampling structure 100 of the embodiment of the present application, by disposing the sampling connecting bar 120 on top of the first battery module 200 and the second battery module 300 , the sampling connecting bar 120 can connect the first battery module 200 and the second battery Signals such as voltage or temperature sampled on the module 300 are aggregated to the battery management system 110 . By arranging the battery management system 110 between the first battery module 200 and the second battery module 300, and connecting the battery management system 110 to the sampling connecting bar 120, the sampling connecting bar 120 is collected from both sides to the middle to the battery The management system 110 is connected, so that the loop length of the sampling structure 100 is short and the cost is low.

Specifically, the battery management system 110 is located between the first battery module 200 and the second battery module 300 , the battery management system 110 may be a rectangle, and the battery management system 110 is used to collect the sampling connection strips 120 into data about the battery modules. Sampling information is passed to other modules.

The sampling connection bar 120 may be made of a conductive metal material such as a flexible printed circuit (Flexible Printed Circuit, FPC) or a flexible flat cable (Flexible Flat Cable, FFC). The sampling connection bar 120 is located on the first battery module 200 and the second battery module On the top of the group 300, the sampling connection bar 120 is used to connect the electrodes on the top of the first battery module 200 and the second battery module 300, so that the voltage or temperature of the battery module can be collected. Further, the sampling connection bar 120 will collect The received signal is passed to the battery management system 110 . The number of sampling connection bars 120 may be one or more, which is not limited herein.

In this way, the sampling connecting bars 120 are collected from both sides to the middle and connected to the battery management system 110 , so that the loop length of the sampling structure 100 is short and the sampling cost is reduced.

Referring to FIG. 1 , in some embodiments, the sampling structure 100 includes a sampling connector 130 , and the sampling connector 130 is disposed at the lower part of the sampling connecting bar 120 and connected to the battery management system 110 .

Specifically, the sampling connector 130 is disposed at the lower part of the sampling connecting bar 120, and there may be multiple sampling connectors 130, which are used to transmit the battery module signal collected by the sampling connecting bar 120 to the battery management system 110, compared with a single sampling connector 130 The connector 130 , a plurality of sampling connectors 130 can transmit more battery module signals to the battery management system 110 . It should be understood that the number of sampling connectors 130 is consistent with the number of sampling connecting bars 120, and the specific number is not limited herein.

In this way, the sampling connector 130 is used to transmit the battery module signal collected by the sampling connection bar 120 , so that the battery module signal can be transmitted to the battery management system 110 .

Referring to FIG. 2 , in some embodiments, the battery management system 110 includes a circuit board 111 and a sampling interface 112 . The sampling interface 112 is disposed on the long side of the circuit board 111 near the sampling connecting bar 120 .

Specifically, the circuit board 111 may be a flexible printed circuit (FPC), which has the characteristics of high wiring density, light weight, and thin thickness. The circuit board 111 can provide a circuit for the battery management system 110 to transmit signals. . The sampling interface 112 is located on the long side of the circuit board 111 near the sampling connecting strip 120 , and the sampling interface 112 is used for connecting with the sampling connector 130 to realize signal transmission. It should be understood that the number and location of sampling interfaces 112 correspond to sampling connectors 130 .

In this way, the signal of the battery module is collected by the sampling connection bar 120 , enters the sampling interface 112 through the sampling connector 130 , and reaches the battery management system 110 to realize signal transmission.

Referring to FIG. 1 , in some embodiments, the sampling connecting bars 120 include a plurality of sampling connecting bars 120 arranged at intervals along the vertical direction of the length of the sampling connecting bars 120 , and each sampling connecting bar 120 is connected by a sampling connector 130 A correspondingly configured sampling interface 112 .

Specifically, there may be multiple sampling connecting bars 120, and the multiple sampling connecting bars 120 are arranged at intervals along the vertical direction of the length of the sampling connecting bars 120, and are distributed on the battery module. For example, there may be four sampling connecting bars 120. The first interval between the connection bar 120 and the second sampling connection bar 120 is equal to the second interval between the third sampling connection bar 120 and the fourth sampling connection bar 120 , and the third interval between the second sampling connection bar 120 and the third sampling connection bar 120 greater than the first interval. It should be understood that the number and interval of the sampling connecting strips 120 can be configured according to the actual situation, which is not limited here. Each sampling connection bar 120 has a sampling connector 130 , and the sampling connection bar 120 is connected to the corresponding sampling interface 112 through the sampling connector 130 , thereby realizing signal transmission.

In this way, by arranging a plurality of sampling connecting bars 120 , a larger number of battery modules can be sampled at the same time, thereby improving the sampling efficiency of the sampling structure 100 .

Referring to FIG. 2 , in some embodiments, the battery management system 110 further includes a communication interface 113 , and the communication interface 113 is located on the short side of the circuit board 111 .

Specifically, the communication interface 113 disposed on the short side of the circuit board 111 is used to communicate with other electronic components on the battery pack 1000 , and there may be one or more communication interfaces 113 . For example, when there are two communication interfaces 113 and four sampling connection strips 120, the two communication interfaces 113 are located on the two short sides of the circuit board 111, and the signals collected by the first sampling connection strip 120 and the second sampling connection strip 120 Passed to the first communication interface 113 . The signals collected by the third sampling connection bar 120 and the fourth sampling connection bar 120 are transmitted to the second communication interface 113 , and the signal transmission is split on the circuit board 111 , thereby shortening the sampling loop.

In this way, the battery management system 110 can transmit the collected signals to other electronic components through the communication interface 113 , so as to realize the transmission of the sampling information of the battery pack 1000 . Multiple communication interfaces 113 can shorten the sampling loop of sampling structure 100 .

Referring to FIG. 3 , an embodiment of the present application further provides a battery pack 1000 . The battery pack 1000 includes a first battery module 200 , a second battery module 300 and the above-mentioned sampling structure 100 . The sampling structure 100 is disposed between the first battery module 200 and the second battery module 300 .

Specifically, the sampling structure 100 is located between the first battery module 200 and the second battery module 300, and the sampling structure 100 can collect and transmit signals such as voltage or temperature of the battery module.

In this way, the sampling structure 100 is disposed between the first battery module 200 and the second battery module 300, and can simultaneously collect the first battery module 200 and the second battery module 300. Further, the sampling information is from two sides to the middle. The collection makes the loop length of the sampling structure 100 short and reduces the sampling cost.

Referring to FIG. 3 , the battery pack 1000 further includes a metal casing 400 , the metal casing 400 is located between the first battery module 200 and the second battery module 300 , and the battery management system 110 is located in the metal casing 400 .

Specifically, the metal shell 400 can be made of metal aluminum by extrusion molding process, the metal shell 400 can be a rectangular parallelepiped, the length and height of the metal shell 400 are the same as the length and height of the battery module, the metal shell 400 The width of the battery management system 110 is adapted to the battery management system 110 , and the battery management system 110 is arranged in the metal casing 400 , and the metal casing 400 is located between the first battery module 200 and the second battery module 300 .

In this way, the length and height of the metal casing 400 are the same as those of the battery module, so that the first battery module 200 , the second battery module 300 and the metal casing 400 are combined into a larger cuboid for stability Internal structure of battery pack 1000. The metal casing 400 can protect the battery management system 110 disposed inside the metal casing 400 , maintain the integrity of the battery management system 110 , so that the sampling structure 100 can operate normally.

Please refer to FIG. 4 , the metal case 400 includes a plurality of first surfaces 410 , a plurality of second surfaces 430 and a plurality of third surfaces 440 , and the plurality of first surfaces 410 are respectively attached to the first battery module 200 and the second battery In the module 300, a plurality of first through holes 431 are formed on one of the second surfaces 430, the plurality of first surfaces 410 and the plurality of second surfaces 430 are enclosed to form a receiving space, the battery management system 110 is located in the receiving space, and the battery management system The sampling interface 112 of 110 is aligned with the first through holes 431 , the plurality of third surfaces 440 are provided with a plurality of second through holes 441 , and the plurality of communication interfaces 113 face the plurality of third surfaces 440 .

Specifically, the metal casing 400 includes two first surfaces 410 , two second surfaces 430 and two third surfaces 440 , and the two first surfaces 410 are respectively attached to the first battery module 200 and the second battery module 300, a plurality of first through holes 431 for avoiding the sampling interface 112 are opened on a second surface 430, and the size of the first through holes 431 is adapted to the sampling connector 130, so that the sampling connector 130 can pass through the first through holes 431. The battery management system 110 is located in the accommodating space enclosed by the two first surfaces 410 and the two second surfaces 430 . The two third surfaces 440 are provided with two second through holes 441 , and the second through holes 441 are the communication interface 113 A channel is provided for connection with other modules. For example, when there are two communication interfaces 113, the two communication interfaces 113 face the two second through holes 441 respectively, and the two communication interfaces 113 can be connected with each other through the two second through holes 441 respectively. Other mods are connected.

In this way, the sampling connector 130 is connected to the sampling interface 112 inside the metal casing 400 through the first through hole 431 , and the communication interface 113 can be connected to other modules through the second through hole 441 , thereby realizing sampling information transmission. The accommodating space can protect the battery management system 110 and maintain the integrity of the battery management system 110, so that the sampling structure 100 can operate normally.

Referring to FIG. 4 , the metal casing 400 further includes a horizontal plate 420 , the horizontal plate 420 is located in the accommodating space, and divides the accommodating space into a plurality of accommodating spaces, and the battery management system 110 is located in one of the accommodating spaces.

Specifically, at least one horizontal plate 420 is disposed inside the metal casing 400 , the horizontal plate 420 can support the battery management system 110 inside the metal casing 400 and restrict the movement of the battery management system 110 inside the metal casing 400 , and the horizontal plate 420 accommodates a battery management system 110 inside the metal casing 400 The space is divided into two or more accommodating spaces, and the horizontal plate 420 can divide a single second through hole 441 into two or more second through holes 441 , and the battery management system 110 is located close to the first through hole 431 in a holding space.

In this way, the battery management system 110 is restricted by the horizontal plate 420 to prevent the battery management system 110 from moving inside the metal casing 400 , and the battery management system 110 located in the accommodating space can be connected to the sampling connection bar 120 outside the accommodating space through the first through hole 431 connection to realize the sampling loop.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc. A particular feature, structure, material, or characteristic described in this embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a sampling structure for the battery package, its characterized in that, the battery package is including the first battery module and the second battery module that arrange in proper order, sampling structure includes:

the battery management system is arranged between the first battery module and the second battery module;

connect battery management system's sampling connecting strip, the sampling connecting strip set up in first battery module with second battery module top with first battery module with the electrode connection at second battery module top.

2. The sampling structure of claim 1, wherein the sampling structure comprises a sampling connector disposed on a lower portion of the sampling connection strip and connected to the battery management system.

3. The sampling structure of claim 2, wherein the battery management system comprises:

a circuit board;

the sampling interface is arranged on the long edge of one side, close to the sampling connecting strip, of the circuit board.

4. The sampling structure of claim 3, wherein the sampling connecting strip comprises a plurality of sampling connecting strips, the plurality of sampling connecting strips are arranged at intervals along the length direction of the sampling connecting strip, and each sampling connecting strip is connected with a corresponding sampling interface through one sampling connector.

5. The sampling structure according to claim 4, wherein the sampling connection bars comprise 4 sampling connection bars, a first spacing of a first sampling connection bar from a second sampling connection bar being equal to a second spacing of a third sampling connection bar from a fourth sampling connection bar, the third spacing of the second sampling connection bar from the third sampling connection bar being greater than the first spacing.

6. The sampling structure of claim 3, wherein the battery management system further comprises:

and the communication interface is arranged on the short side of the circuit board.

7. A battery pack, comprising a first battery module, a second battery module, and the sampling structure of any one of claims 1-6, wherein the sampling structure is disposed between the first battery module and the second battery module.

8. The battery pack according to claim 7, further comprising:

the metal shell is positioned between the first battery module and the second battery module, and the battery management system is positioned in the metal shell.

9. The battery pack of claim 8, wherein the metal housing comprises:

the first surfaces are respectively attached to the first battery module and the second battery module;

the battery management system comprises a plurality of second surfaces, a plurality of first through holes are formed in one of the second surfaces, the first surfaces and the second surfaces surround to form an accommodating space, the battery management system is located in the accommodating space, and a sampling interface of the battery management system is aligned to the first through holes;

and the third surface is provided with a plurality of second through holes, and the communication interface of the battery management system faces the third surface.

10. The battery pack of claim 9, wherein the metal case further comprises:

the transverse plate is located in the accommodating space and divides the accommodating space into a plurality of parts, and the battery management system is located in one of the accommodating spaces.

Images