CN219779153U - Separator assembly, battery and electricity utilization device - Google Patents

Abstract

The utility model discloses a separator assembly, a battery and an electric device. The isolation plate assembly comprises a first bracket, an isolation plate, a second bracket and a busbar, wherein the first bracket is provided with a first positioning hole for the electrode terminal of the battery cell to pass through; the isolation plate is arranged on one side of the first bracket, which is away from the battery cell, and is matched with the first bracket in a positioning way; the second bracket is arranged on one side of the isolation plate, which is away from the first bracket, and the second bracket and the first bracket are mutually matched in a positioning way; the busbar is arranged on one side of the second bracket, which is away from the isolation plate, and is used for being electrically connected with the electrode terminal; at least a portion of the second bracket is covered by the bus bar. The utility model improves the positioning precision between the isolating plate and the battery monomer, thereby improving the connection strength between the busbar and the battery monomer and enhancing the stability and reliability of the battery.

Description

Separator assembly, battery and electricity utilization device

Technical Field

The utility model relates to the technical field of batteries, in particular to a separator assembly, a battery and an electric device.

Background

In recent years, with the rapid development of new energy technology, new energy automobiles are increasingly widely applied and gradually replace traditional fuel automobiles, and become one of the mainstream transportation means. The power battery is used as a power source of the new energy automobile and is one of core equipment of the new energy automobile.

At present, a plurality of battery monomers of battery realize the electricity through a plurality of busbar of division board subassembly and connect, appear electric connection performance poor easily between busbar and the battery monomer, reduced the steady reliability of battery.

Disclosure of Invention

The embodiment of the utility model provides a separator assembly, a battery and an electric device, which can improve the stability and reliability of the battery.

In a first aspect, an embodiment of the present utility model provides a separator assembly, including a first bracket, a separator, a second bracket, and a busbar, where the first bracket is provided with a first positioning hole through which an electrode terminal of a battery cell passes; the isolation plate is arranged on one side of the first bracket, which is away from the battery cell, and is matched with the first bracket in a positioning way; the second bracket is arranged on one side of the isolation plate, which is away from the first bracket, and the second bracket and the first bracket are mutually matched in a positioning way; the bus bar is arranged on one side of the second bracket, which is away from the isolation plate, and is used for being electrically connected with the electrode terminal, and at least part of the second bracket is covered by the bus bar.

In the above scheme, the first bracket and the battery cell can be positioned through the first positioning hole, and the electrode terminal can be exposed, so that the bus bar is electrically connected with the electrode terminal. Through the location cooperation between first support and the division board, can improve the positioning accuracy between division board and the battery monomer to improve the joint strength between busbar and the battery monomer, strengthen the steady reliability of battery. Through the location cooperation of second support and first support, can further fix a position the division board, further improve the positioning accuracy between division board and the battery monomer, when placing the busbar on the division board moreover, can accomplish the step of placing more accurately fast according to the position of second support, improve assembly efficiency.

In some embodiments, the first bracket is provided with a first positioning column, and the isolation plate is provided with a second positioning hole for the first positioning column to pass through.

In the above scheme, when placing the division board, only need aim at second locating hole and first locating column for first locating column passes the second locating hole, can realize the location between division board and the first support, simple structure, and can improve assembly efficiency.

In some embodiments, the first bracket is provided with a first positioning column, and the second bracket is provided with a third positioning hole for the first positioning column to pass through.

In the above scheme, when placing the second support, only need to aim at third locating hole and first locating column for first locating column passes the third locating hole, can realize the location between first support and the second support, simple structure, and can improve assembly efficiency.

In some embodiments, the spacer is provided with a positioning groove recessed in the direction of the first bracket, and at least part of the second bracket is embedded in the positioning groove.

In the scheme, at least part of the second bracket is embedded in the positioning groove of the isolation plate, so that the second bracket can be limited to move in the horizontal direction of the isolation plate, and the positioning accuracy is further improved.

In some embodiments, the second bracket includes a bracket body and an extension portion interconnected, the extension portion being covered by the bus bar, a thickness of the extension portion along the first direction being less than a thickness of the bracket body along the first direction; wherein the first direction is the thickness direction of the isolation plate.

In the above scheme, because the thickness of extension is less than the thickness of support body, the busbar compresses tightly the extension back, and the busbar can be closer to the battery monomer, that is to say, has reduced the clearance between busbar and the battery monomer, is convenient for busbar and the welding of battery monomer's electrode terminal.

In some embodiments, the extension includes first and second extension segments disposed on opposite sides of the bracket body in a second direction, respectively, the first and second extension segments being covered by different bus bars, respectively; wherein the second direction is disposed to intersect the first direction.

In the scheme, as the first extension section and the second extension section are covered by different bus bars, the different bus bars can be positioned more accurately through the second support, and the positioning precision between the bus bars and the electrode terminals is further improved.

In some embodiments, the first bracket is provided with a first through hole exposing the explosion-proof valve of the power supply unit, and the second bracket is provided with a second through hole, and the orthographic projection of the second through hole on the isolation plate at least partially overlaps with the orthographic projection of the first through hole on the isolation plate.

In the above-mentioned scheme, the orthographic projection of second through-hole at the division board overlaps with the orthographic projection of first through-hole at the division board at least partially, and the inside atmospheric pressure of battery monomer of being convenient for is great, discharges gas through first through-hole and second through-hole, improves the security of battery.

In some embodiments, the spacer is provided with a second positioning post and the busbar is provided with a fourth positioning hole through which the second positioning post passes.

In the above-mentioned scheme, through the location cooperation between second reference column and the fourth locating hole, can be fixed in the division board with the busbar, further improve the stability of battery. And the second positioning column and the fourth positioning hole have simple structures and are convenient to assemble.

In a second aspect, an embodiment of the present utility model provides a battery, including a battery unit and a separator assembly according to any one of the foregoing embodiments, where a plurality of battery units are sequentially disposed, and the plurality of battery units are electrically connected through a plurality of bus bars.

In a third aspect, an embodiment of the present utility model provides an electrical device, including a battery according to any one of the foregoing embodiments, where the battery is configured to provide electrical energy.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the utility model;

fig. 2 is an exploded view of a battery according to some embodiments of the present utility model;

fig. 3 is a schematic view illustrating a structure of a battery module according to some embodiments of the present utility model;

fig. 4 is a schematic exploded view of a battery cell according to some embodiments of the present utility model;

fig. 5 is an exploded view of a separator assembly and a battery module provided in some embodiments of the present utility model;

fig. 6 is a schematic view illustrating an assembly of a first bracket and a battery module according to some embodiments of the present utility model;

FIG. 7 is an enlarged schematic view of portion A of FIG. 6;

FIG. 8 is a schematic view of a first bracket according to some embodiments of the present utility model;

fig. 9 is an assembled schematic view of a separator assembly and a battery module provided in some embodiments of the present utility model;

FIG. 10 is an enlarged schematic view of portion B of FIG. 5;

FIG. 11 is a schematic view of a second bracket according to some embodiments of the present utility model;

FIG. 12 is a partial schematic view of FIG. 5;

fig. 13 is an enlarged schematic view of a portion D of fig. 9.

The reference numerals are as follows:

1000. a vehicle; 100. a battery; 200. a controller; 300. a motor; 10. an upper cover; 30. a case; 400. a battery module; 20. a battery cell; 22. a housing; 21. an end cap; 26. an electrode terminal; 23. an electrode assembly; 50. a separator assembly; 51. a first bracket; 511. a first positioning hole; 512. a first positioning column; 513. a first through hole; 52. a partition plate; 521. a second positioning hole; 522. a positioning groove; 523. a second positioning column; 53. a busbar; 531. a fourth positioning hole; 54. a second bracket; 541. a third positioning hole; 542. a bracket body; 543. a positioning part; 544. an extension; 545. a first extension; 546. a second extension; 547. a second through hole; x, a first direction; y, second direction.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the utility model and are not intended to limit the scope of the utility model, i.e., the utility model is not limited to the embodiments described.

In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like are merely used for convenience in describing the present utility model and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the utility model may be combined with other embodiments.

The directional terms appearing in the following description are those directions shown in the drawings and do not limit the specific structure of the utility model. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

In the present utility model, the battery cells may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, which is not limited in the embodiment of the present utility model. The battery cell may be in a cylindrical shape, a flat shape, a rectangular parallelepiped shape, or other shapes, which is not limited in this embodiment of the utility model. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft package battery cell are not limited in this embodiment.

Reference to a battery in accordance with an embodiment of the present utility model refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present utility model may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separation membrane. The battery cell mainly relies on metal ions to move between the positive and negative electrode plates to operate. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes out of the current collector coated with the positive electrode active material layer, and the current collector without the positive electrode active material layer is laminated to serve as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes out of the current collector coated with the negative electrode active material layer, and the current collector without the negative electrode active material layer is laminated to serve as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a roll-to-roll structure or a lamination structure, and embodiments of the present utility model are not limited thereto.

The battery cell disclosed by the embodiment of the utility model can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices. The power supply system with the battery cells, batteries and the like disclosed by the utility model can be used for forming the power utilization device, so that the stability of the battery performance and the service life of the battery are improved.

The battery comprises battery cells and a separator assembly, wherein the separator assembly comprises a separator and a busbar, and a plurality of battery cells are electrically connected in series, parallel or series-parallel mode through a plurality of busbars so as to realize the design voltage of the battery. When the isolation board assembly is produced in an assembly factory, production workers or automatic equipment are required to arrange the isolation boards in a swaying way, and the bus bars are sequentially placed and formed through a hot pressing process. At present, the relative position of the isolation plate assembly and the battery monomer is easy to generate errors, so that the electric connection performance between the bus bar and the battery monomer is poor, and the stability and the reliability of the battery are reduced.

In order to solve the technical problems, the utility model provides a separator assembly, which comprises a first bracket, a separator and a busbar, wherein the first bracket is provided with a first positioning hole for an electrode terminal of a battery cell to pass through; the isolation plate is arranged on one side of the first bracket, which is away from the battery cell, and is matched with the first bracket in a positioning way; the busbar is arranged on one side of the isolation plate, which is away from the first bracket, and the busbar is used for being electrically connected with the electrode terminal. In the above scheme, the first bracket and the battery cell can be positioned through the first positioning hole, and the electrode terminal can be exposed, so that the bus bar is electrically connected with the electrode terminal. Through the location cooperation between first support and the division board, can improve the positioning accuracy between division board and the battery monomer to improve the joint strength between busbar and the battery monomer, strengthen the steady reliability of battery.

The battery cell disclosed by the embodiment of the utility model can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices. The power supply system with the battery cells, batteries and the like disclosed by the utility model can be used for forming the power utilization device, so that the stability of the battery performance and the service life of the battery are improved.

The embodiment of the utility model provides an electric device using a battery as a power supply, wherein the electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present utility model as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the utility model. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present utility model, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present utility model. The battery 100 includes a battery case and a battery cell 20. In some embodiments, the battery case may include an upper cover 10 and a case 30, the upper cover 10 and the case 30 being covered with each other, the upper cover 10 and the case 30 together defining a receiving chamber for receiving the battery cell 20. The case 30 may have a hollow structure with one end opened, and the upper cover 10 may have a plate-shaped structure, and the upper cover 10 covers the opening side of the case 30, so that the upper cover 10 and the case 30 together define a receiving cavity; the upper cover 10 and the case 30 may be hollow structures with one side open, and the open side of the upper cover 10 may be closed to the open side of the case 30. Of course, the battery case formed by the upper cover 10 and the case 30 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

Fig. 3 is a schematic structural view of the battery module 400 shown in fig. 2. In the battery 100, the plurality of battery cells 20 may be connected in series, parallel or a series-parallel connection, wherein the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the box body; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 20 in series or parallel or series-parallel connection, and a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in a case. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery cell or a primary battery cell; but not limited to, lithium sulfur battery cells, sodium ion battery cells, or magnesium ion battery cells. The battery cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 4, fig. 4 is an exploded view of a battery cell 20 according to some embodiments of the present utility model. The battery cell 20 refers to the smallest unit constituting the battery. As shown in fig. 3, the battery cell 20 includes an end cap 21, a case 22, an electrode assembly 23, and other functional components.

The end cap 21 refers to a member that is covered at the opening of the case 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 may be adapted to the shape of the housing 22 to fit the housing 22. Optionally, the end cover 21 may be made of a material (such as an aluminum alloy) with a certain hardness and strength, so that the end cover 21 is not easy to deform when being extruded and collided, so that the battery cell 20 can have higher structural strength, and the safety performance can be improved. The end cap 21 may be provided with functional parts such as electrode terminals 26. The electrode terminals 26 may be used to be electrically connected with the electrode assembly 23 for outputting or inputting electric power of the battery cell 20. In some embodiments, the end cap 21 may also be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 21 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present utility model. In some embodiments, insulation may also be provided on the inside of the end cap 21, which may be used to isolate electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

The case 22 is an assembly for cooperating with the end cap 21 to form an internal environment of the battery cell 20, which may be used to house the electrode assembly 23, electrolyte, and other components. The case 22 and the end cap 21 may be separate members, and an opening may be provided in the case 22, and the interior of the battery cell 20 may be formed by covering the opening with the end cap 21 at the opening. In some examples, the housing 22 is a hollow structure with one side open, and the end cap 21 is one and covers the opening of the housing 22. In other examples, the housing 22 is a hollow structure with two openings on two sides, and two end caps 21 are respectively covered on the two openings of the housing 22. It is also possible to integrate the end cap 21 and the housing 22, but specifically, the end cap 21 and the housing 22 may form a common connection surface before other components are put into the housing, and when it is necessary to encapsulate the inside of the housing 22, the end cap 21 is then put into place with the housing 22. The housing 22 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 22 may be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present utility model.

The electrode assembly 23 is a component in which electrochemical reactions occur in the battery cell 20. One or more electrode assemblies 23 may be contained within the housing 22. The electrode assembly 23 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode sheets having active material constitute the main body of the electrode assembly 23, and the portions of the positive and negative electrode sheets having no active material constitute the tabs, respectively. The positive electrode tab and the negative electrode tab can be located at one end of the main body together or located at two ends of the main body respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected to the electrode terminal 26 to form a current loop.

Fig. 5 is an exploded view of a separator assembly and a battery module provided in some embodiments of the present utility model; fig. 6 is a schematic view illustrating an assembly of a first bracket and a battery module according to some embodiments of the present utility model; FIG. 7 is an enlarged schematic view of portion A of FIG. 6; FIG. 8 is a schematic view of a first bracket according to some embodiments of the present utility model; fig. 9 is an assembled schematic view of a separator assembly and a battery module according to some embodiments of the present utility model.

Referring to fig. 5-9 in combination, in a first aspect, an embodiment of the present utility model provides a separator assembly 50, which includes a first bracket 51, a separator 52, a second bracket 54, and a bus bar 53, wherein the first bracket 51 is provided with a first positioning hole 511 for passing through an electrode terminal 26 of a battery cell 20; the isolation plate 52 is arranged on one side of the first bracket 51 away from the battery cell 20 and is matched with the first bracket 51 in a positioning way; the second bracket 54 is arranged on one side of the isolation plate 52 away from the first bracket 51, and the second bracket 54 is matched with the first bracket 51 in a positioning way; the bus bar 53 is disposed at a side of the second holder 54 facing away from the separator 52, and the bus bar 53 is used for electrical connection with the electrode terminal 26. At least a portion of the second bracket 54 is covered by the bus bar 53.

The number of the bus bars 53 is plural, and constitutes a bus member, which is connected with electrode terminals of the plurality of battery cells to achieve electrical connection between the plurality of battery cells through the bus member, so that the plurality of battery cells can be connected in series or in parallel or in series-parallel. Specifically, each battery cell includes a positive electrode terminal and a negative electrode terminal. In the battery module, adjacent battery cells are connected by a bus bar 53. For example, when the battery cells are connected in series, the positive electrode terminal of one battery cell and the negative electrode terminal of the other battery cell are connected by the bus bar 53; alternatively, when the battery cells are connected in parallel, the positive electrode terminal of one battery cell and the negative electrode terminal of the other battery cell are connected by the bus bar 53.

The separator 52 may be disposed at a side of the battery module 400 having the bus bar 53, the separator 52 serves as a carrier for the bus bar 53, the bus bar 53 may be provided with a welding portion, and the separator 52 is provided with a via hole exposing the welding portion so that the welding portion of the bus bar 53 can be welded with the electrode terminal 26 of the battery cell.

The first positioning hole 511 provided on the first support 51 may have a size that matches the size of the electrode terminal 26, i.e., the size of the first positioning hole 511 is slightly larger than the size of the electrode terminal 26, so that the electrode terminal 26 just passes through the first positioning hole 511. The first holder 51 and the battery cell 20 can be positioned by the cooperation of the electrode terminal 26 and the first positioning hole 511, and the first holder 51 is restricted from moving in the horizontal direction.

"the spacer plate 52 is in positioning engagement with the first bracket 51" means that: the partition plate 52 is fixed to the first bracket 51. Illustratively, the first bracket 51 is provided with a positioning column, the isolation plate 52 is provided with a positioning hole through which the positioning column can pass, and the isolation plate 52 is fixed with the first bracket 51 by positioning fit of the positioning column and the positioning hole, so that the isolation plate 52 is prevented from moving in the horizontal direction. Alternatively, a positioning hole may be provided on the first bracket 51, and a positioning column matched with the positioning hole may be provided on the isolation plate 52; or the first bracket 51 and the isolation plate 52 are respectively provided with a clamping hook, and the positioning and the matching are realized through the mutual clamping of the clamping hooks of the first bracket and the isolation plate.

The separator 52 may be provided with an insulating film covering the entire battery module 400 to insulate and protect the battery module 400.

The battery 100 according to the embodiment of the utility model may further include a circuit board, where the circuit board is used to collect signals such as temperature and voltage in the working process of the battery unit, and the collected signals are output through a connector, and the circuit board is electrically connected with the bus bar 53, so that collection of information of the battery unit can be achieved through the bus bar 53.

When the separator assembly 50 is assembled to one side of the battery module 400, the first bracket 51, the separator 52, the second bracket 54, and the bus bar 53 are sequentially placed on the battery cells 20. "the second bracket 54 is in positioning engagement with the first bracket 51" means that: the second bracket 54 is fixed in position with the first bracket 51. Illustratively, the first bracket 51 is provided with a positioning column, the second bracket 54 is provided with a positioning hole through which the positioning column can pass, and the positioning column is matched with the positioning hole to fix the second bracket 54 and the first bracket 51 and prevent the second bracket 54 from moving in the horizontal direction. Alternatively, a positioning hole may be provided on the first bracket 51, and a positioning post matched with the positioning hole may be provided on the second bracket 54; or the first bracket 51 and the second bracket 54 are respectively provided with a clamping hook, and the positioning and the matching are realized through the mutual clamping connection of the clamping hooks of the first bracket and the second bracket.

At least part of the second bracket 54 is covered by the bus bar 53, that is, at least part of the upper side of the second bracket 54 is covered and pressed by the bus bar 53, preventing the second bracket 54 from moving in the first direction X, which is the thickness direction of the partition plate 52.

In the above-described embodiments, the positioning between the first holder 51 and the battery cell 20 can be achieved through the first positioning hole 511, and the electrode terminal 26 can be exposed, so that the bus bar 53 and the electrode terminal 26 can be electrically connected. By the positioning fit between the first bracket 51 and the isolation plate 52, the positioning accuracy between the isolation plate 52 and the battery cell 20 can be improved, so that the connection strength between the bus bar 53 and the battery cell 20 is improved, and the stability and reliability of the battery 100 are enhanced. Through the locating cooperation of second support 54 and first support 51, can further fix a position division board 52, further improve the positioning accuracy between division board 52 and the battery monomer 20, when placing busbar 53 on division board 52 moreover, can accomplish the step of placing more accurately fast according to the position of second support 54, improve assembly efficiency.

Fig. 10 is an enlarged schematic view of a portion B of fig. 5.

Referring to fig. 8 and 10 in combination, in some embodiments, the first bracket 51 is provided with a first positioning column 512, and the isolation plate 52 is provided with a second positioning hole 521 through which the first positioning column 512 passes.

The size of the first positioning post 512 may be matched to the size of the second positioning hole 521, i.e., the size of the second positioning hole 521 is slightly larger than the size of the first positioning post 512, so that the first positioning post 512 just passes through the second positioning hole 521.

In the above scheme, when the isolation plate 52 is placed, the second positioning hole 521 is aligned with the first positioning column 512, so that the first positioning column 512 passes through the second positioning hole 521, and the positioning between the isolation plate 52 and the first bracket 51 can be realized, so that the structure is simple, and the assembly efficiency can be improved.

Fig. 11 is a schematic structural diagram of a second bracket according to some embodiments of the present utility model, as shown in fig. 11, in some embodiments, the first bracket 51 is provided with a first positioning column 512, and the second bracket 54 is provided with a third positioning hole 541 through which the first positioning column 512 passes.

The size of the first positioning column 512 may be matched with the size of the third positioning hole 541, i.e., the size of the third positioning hole 541 is slightly larger than the size of the first positioning column 512, so that the first positioning column 512 just passes through the third positioning hole 541.

In the above-mentioned scheme, when the second bracket 54 is placed, only the third positioning hole 541 is aligned with the first positioning column 512, so that the first positioning column 512 passes through the third positioning hole 541, and the positioning between the first bracket 51 and the second bracket 54 can be realized, so that the structure is simple, and the assembly efficiency can be improved.

FIG. 11 is a schematic view of a second bracket according to some embodiments of the present utility model; fig. 12 is a partial schematic view of fig. 5. Referring to fig. 11 and 12 in combination, in some embodiments, the isolation plate 52 is provided with a positioning groove 522 recessed toward the first bracket 51, and at least a portion of the second bracket 54 is embedded in the positioning groove 522.

The positioning groove 522 is an anti-groove matching with at least part of the second bracket 54 in shape and size, so that at least part of the second bracket 54 is clamped in the positioning groove 522. For example, the partition plate 52 includes a bracket body 542 and a positioning portion 543 connected to each other, the positioning portion 543 extends outwardly with respect to the bracket body 542, the positioning groove 522 is designed according to the shape and size of the bracket body 542, the bracket body 542 is embedded in the positioning groove 522, and the third positioning hole 541 is provided in the positioning portion 543.

In the above-described aspect, by embedding at least part of the second bracket 54 in the positioning groove 522 of the partition plate 52, the second bracket 54 can be restricted from moving in the horizontal direction of the partition plate 52, and positioning accuracy can be further improved.

FIG. 11 is a schematic view of a second bracket according to some embodiments of the present utility model; FIG. 12 is a partial schematic view of FIG. 5; fig. 13 is an enlarged schematic view of a portion D of fig. 9.

Referring to fig. 11-13 in combination, in some embodiments, the second bracket 54 includes a bracket body 542 and an extension 544 connected to each other, the extension 544 is covered by the bus bar 53, and a thickness of the extension 544 along the first direction X is smaller than a thickness of the bracket body 542 along the first direction X; the first direction X is the thickness direction of the spacer 52.

That is, the extension portion 544 is recessed toward the partition plate 52 with respect to the bracket body 542, and the upper surface of the extension portion 544 is lower than the upper surface of the bracket body 542. After the bus bar 53 is blanket-pressed against the upper side of the extension 544, the upper surface of the bus bar 53 may be substantially flush with the upper surface of the bracket body 542.

In the above-mentioned scheme, because the thickness of the extension portion 544 is smaller than the thickness of the bracket body 542, after the extension portion 544 is pressed by the bus bar 53, the bus bar 53 can be closer to the battery cell, that is, the gap between the bus bar 53 and the battery cell is reduced, so that the bus bar 53 and the electrode terminal of the battery cell can be welded conveniently.

In some embodiments, the extension 544 includes a first extension 545 and a second extension 546 disposed on opposite sides of the bracket body 542, respectively, along the second direction Y, the first extension 545 and the second extension 546 being covered by different bus bars 53, respectively; wherein the second direction Y is disposed intersecting the first direction X.

The second direction Y is a longitudinal direction of the battery cell, and the second direction Y is perpendicular to the first direction X. The first extension 545 is covered with the bus bar 53 on the upper side of the positive electrode terminal, and the second extension 546 is covered with the bus bar 53 on the upper side of the negative electrode terminal.

In the above-mentioned scheme, since the first extension segment 545 and the second extension segment 546 are covered by different bus bars 53, the different bus bars 53 can be positioned more precisely by the second bracket 54, and the positioning accuracy between the bus bars 53 and the electrode terminals is further improved.

In some embodiments, the first bracket 51 is provided with a first through hole 513 exposing the explosion-proof valve of the power supply unit, and the second bracket 54 is provided with a second through hole 547, and the orthographic projection of the second through hole 547 on the partition plate 52 at least partially overlaps with the orthographic projection of the first through hole 513 on the partition plate 52.

The explosion-proof valve of the battery cell 20 is a pressure relief member provided at one side of the electrode assembly 23. When the internal pressure of the battery cell 20 exceeds a safety range, excessive gas or pressure is released through the explosion-proof valve to maintain safe operation of the battery 100, due to overheating of the battery 100, abnormality in charging, battery damage or internal failure, etc. Specifically, when the internal pressure of the battery cell 20 increases, the explosion-proof valve opens or releases gas to relieve the internal pressure. This prevents the battery cell 20 from being excessively expanded or exploded.

The first bracket 51 is disposed at a side of the battery cell having the explosion-proof valve, and the arrangement of the first and second through holes 513 and 547 can expose the explosion-proof valve without affecting the release of gas.

In the above scheme, the orthographic projection of the second through hole 547 on the isolation plate 52 and the orthographic projection of the first through hole 513 on the isolation plate 52 are at least partially overlapped, so that when the air pressure inside the battery cell is large, the air is discharged through the first through hole 513 and the second through hole 547, and the safety of the battery is improved.

Fig. 13 is an enlarged schematic view of a portion D of fig. 9. As shown in fig. 13, in some embodiments, the partition plate 52 is provided with a second positioning post 523, and the bus bar 53 is provided with a fourth positioning hole 531 through which the second positioning post 523 passes.

The size of the second positioning post 523 may be matched with the size of the fourth positioning hole 531, i.e., the size of the fourth positioning hole 531 is slightly larger than the size of the second positioning post 523, so that the second positioning post 523 just passes through the fourth positioning hole 531.

In the above-described aspect, the bus bar 53 may be fixed to the partition plate 52 by the positioning engagement between the second positioning post 523 and the fourth positioning hole 531, further improving the stability of the battery 100. And the second positioning post 523 and the fourth positioning hole 531 are simple in structure and convenient to assemble.

Alternatively, the number of the second positioning posts 523 and the number of the fourth positioning holes 531 may be plural, respectively, and the plurality of second positioning posts 523 and the plurality of fourth positioning holes 531 may be in one-to-one correspondence, so that the positioning accuracy between the bus bar 53 and the partition plate 52 may be further improved by increasing the number of the second positioning posts 523 and the number of the fourth positioning holes 531.

In a second aspect, an embodiment of the present utility model provides a battery 100, including a battery cell 20 and a separator assembly 50 according to any of the foregoing embodiments, where a plurality of battery cells are disposed in sequence, and the plurality of battery cells are electrically connected by a plurality of bus bars 53.

In a third aspect, an embodiment of the present utility model provides an electrical device, including a battery according to any one of the foregoing embodiments, where the battery is configured to provide electrical energy.

According to some embodiments of the present utility model, there is provided a separator assembly 50 including a first bracket 51, a separator 52, and a bus bar 53, the first bracket 51 being provided with a first positioning hole 511 through which an electrode terminal 26 of a battery cell 20 passes; the isolation plate 52 is arranged on one side of the first bracket 51 away from the battery cell 20 and is matched with the first bracket 51 in a positioning way; a bus bar 53 is provided at a side of the separator 52 facing away from the first holder 51, the bus bar 53 being for electrical connection with the electrode terminal 26. The first bracket 51 is provided with a first positioning column 512, and the isolation plate 52 is provided with a second positioning hole 521 for the first positioning column 512 to pass through.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A separator plate assembly, comprising:

a first bracket provided with a first positioning hole for the electrode terminal of the battery cell to pass through;

the isolation plate is arranged on one side of the first bracket, which is away from the battery cell, and is matched with the first bracket in a positioning way;

the second bracket is arranged on one side of the isolation plate, which is away from the first bracket, and the second bracket and the first bracket are mutually matched in a positioning way;

and a bus bar disposed at a side of the second support facing away from the separator, the bus bar being for electrical connection with the electrode terminals, at least a portion of the second support being covered by the bus bar.

2. The separator plate assembly of claim 1, wherein the first bracket is provided with a first locating post and the separator plate is provided with a second locating hole through which the first locating post passes.

3. The separator plate assembly of claim 1, wherein the first bracket is provided with a first positioning post and the second bracket is provided with a third positioning hole through which the first positioning post passes.

4. The separator plate assembly according to claim 1, wherein the separator plate is provided with a positioning groove recessed in a direction of the first bracket, and at least part of the second bracket is embedded in the positioning groove.

5. The separator plate assembly of claim 1, wherein the second bracket comprises a bracket body and an extension connected to each other, the extension being covered by the busbar, the extension having a thickness in a first direction that is less than a thickness of the bracket body in the first direction; wherein the first direction is the thickness direction of the isolation plate.

6. The separator plate assembly of claim 5, wherein the extension includes first and second extension sections disposed on opposite sides of the bracket body in a second direction, respectively, the first and second extension sections being covered by different ones of the bus bars, respectively; wherein the second direction is arranged to intersect the first direction.

7. The separator assembly of claim 1, wherein the first bracket is provided with a first through hole for exposing the explosion-proof valve of the battery cell, and the second bracket is provided with a second through hole, and an orthographic projection of the second through hole on the separator at least partially overlaps an orthographic projection of the first through hole on the separator.

8. The separator plate assembly of claim 1, wherein the separator plate is provided with a second locating post and the buss bar is provided with a fourth locating hole through which the second locating post passes.

9. A battery, comprising:

the battery cells are sequentially arranged;

the separator assembly according to any one of claims 1 to 8, wherein a plurality of the battery cells are electrically connected through a plurality of the bus bars.

10. An electrical device comprising a battery according to claim 9 for providing electrical energy.