CN220527142U

CN220527142U - Connection assembly, battery and electricity utilization device

Info

Publication number: CN220527142U
Application number: CN202323229578.8U
Authority: CN
Inventors: 王峰; 刘逸飞; 房文丽; 潘鑫
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-02-23
Anticipated expiration: 2033-11-28

Abstract

The application discloses a coupling assembling, battery and power consumption device. The connecting assembly comprises an output electrode busbar and a fixing assembly, the fixing assembly comprises a mounting box and an insulating part, the output electrode busbar is fixed in the mounting box, the mounting box is provided with a glue filling opening, the insulating part is filled in the mounting box, and the insulating part covers the part of the output electrode busbar, which is located in the mounting box. The insulation performance of the connecting component is improved, and therefore the reliability of the battery is improved.

Description

Connection assembly, battery and electricity utilization device

Technical Field

The application relates to the technical field of batteries, in particular to a connecting component, a battery and an electric device.

Background

Battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like. The battery cells may include cadmium-nickel battery cells, hydrogen-nickel battery cells, lithium ion battery cells, secondary alkaline zinc-manganese battery cells, and the like.

In the development of battery technology, the insulating performance of a connection assembly in a battery is poor, and the reliability of the battery is reduced.

Disclosure of Invention

The embodiment of the application provides a connecting assembly, a battery and an electric device, which can improve the reliability of the battery.

In a first aspect, embodiments of the present application provide a coupling assembling, coupling assembling includes output electrode busbar and fixed subassembly, and fixed subassembly includes mounting box and insulating part, and output electrode busbar is fixed in the mounting box, and the mounting box has the encapsulating mouth, and insulating part fills in the mounting box, and covers the part that output electrode busbar is located the mounting box.

In the above scheme, output electrode busbar one end is connected with the battery monomer, and the other end is used for being connected with outside connector. Because the output electrode busbar is fixed in the mounting box, the insulating part is filled in the mounting box, and the insulating part formed by glue filling of the glue filling opening of the mounting box covers the part positioned on the output electrode busbar, so that the output electrode busbar is further fixed, the output electrode busbar is insulated and protected, the insulating performance of the connecting component is improved, and the reliability of the battery is enhanced.

In some embodiments, the mounting box includes a bottom plate and a side wall disposed circumferentially around the bottom plate, the side wall facing away from the bottom plate being a glue-pouring opening.

In the above-mentioned scheme, through the cooperation of bottom plate and side wall, can protect the busbar subassembly that is located the mounting box better, the side wall deviates from the bottom plate in addition one side is whole for the encapsulating mouth, has increased the area of encapsulating mouth, and the encapsulating of insulating part forms.

In some embodiments, the side wall is provided with a first via hole and a second via hole which are oppositely arranged, and the first via hole and the second via hole are used for the output electrode busbar to pass through.

In the scheme, the output electrode busbar sequentially passes through the first via hole and the second via hole and then is connected with an external connector, and the first via hole and the second via hole have initial positioning function on the output electrode busbar, so that the insulating part is conveniently prepared by the glue filling process.

In some embodiments, the connection assembly further comprises a positioning column, a third via hole for the positioning column to pass through is formed in the bottom plate, and a fourth via hole for the positioning column to pass through is formed in the output electrode busbar.

In the above scheme, the positioning column respectively penetrates through the third through hole of the bottom plate and the fourth through hole of the output electrode busbar, so that the output electrode busbar can be further positioned, and the output electrode busbar is fixed relative to the bottom plate of the mounting box before the glue filling process step.

In some embodiments, the connection assembly further includes a fastener threadably coupled to the positioning post, the fastener disposed on a side of the output pole buss bar facing away from the base plate.

In the scheme, one side of the side wall, which is deviated from the side wall, of the bottom plate can be used for sequentially penetrating the positioning column through the third through hole and the fourth through hole during assembly, and then the fastener is locked and attached to one end of the positioning column, which is deviated from the bottom plate. The structure of this application embodiment is convenient for assemble, can improve assembly efficiency.

In some embodiments, the output electrode buss bar includes positive electrode buss portion and negative electrode buss portion, and positive electrode buss portion and negative electrode buss portion all are fixed in the mounting box, need not to prepare the mounting box for positive electrode buss portion and negative electrode buss portion alone respectively, have simplified the structure, the cost is reduced.

In some embodiments, the mounting box includes an insulating plate for dividing an interior of the mounting box into a first subchamber and a second subchamber, the positive electrode bussing portion being located in the first subchamber and the negative electrode bussing portion being located in the second subchamber. The insulating plate further improves the insulating effect between the positive electrode confluence part and the negative electrode confluence part.

In some embodiments, the mounting box is an insulator, further improving the insulating properties of the connection assembly.

In some embodiments, the output electrode busses are spaced from the base plate such that insulation can be filled between the output electrode busses and the base plate to further improve the insulation performance of the connection assembly.

In a second aspect, an embodiment of the present application provides a battery, including a battery cell and a connection assembly of any one of the foregoing embodiments, where the output electrode bus is connected to the battery cell.

In a third aspect, an embodiment of the present application provides an electrical device, including the above battery, where the battery is configured to provide electrical energy.

The foregoing description is merely an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the features and advantages of the present application more comprehensible, the following detailed description of the present application is given.

Drawings

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

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

fig. 2 is a schematic structural view of a battery according to some embodiments of the present application;

fig. 3 is a schematic structural view of a battery module;

FIG. 4 is a schematic structural view of a connection assembly according to some embodiments of the present application;

FIG. 5 is a schematic view of a portion of a connection assembly according to some embodiments of the present application;

FIG. 6 is a partial top view of a connection assembly according to some embodiments of the present application;

FIG. 7 is a schematic view of a connection assembly according to other embodiments of the present application;

fig. 8 is a partial top view of a connection assembly according to further embodiments of the present application.

The reference numerals are as follows:

a vehicle 1000; a battery 100; a controller 200; a motor 300; an upper cover 10; a battery cell 20; a lower cover 30; a connection assembly 400; an output electrode bus 40; a positive electrode confluence portion 41; a negative electrode confluence portion 42; a fixing assembly 50; a mounting box 51; a glue filling port 51a; a bottom plate 511; side wall 512; a first via 51b; a second via hole 51c; a first side plate 513; a second side plate 514; a first subchamber 515; a second subchamber 516; an insulating plate 517; an insulating portion 52; a positioning column 53; and a fastener 54.

Detailed Description

Embodiments of the present application 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 present application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.

In the description of the present application, 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 indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being 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 application. 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 application. 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 understand that the embodiments described herein may be combined with other embodiments.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the present application. In the description of the present application, 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 terms in the present application can be understood as appropriate by one of ordinary skill in the art.

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited by the embodiment of the present application. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. 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 thereto.

Reference to a battery in embodiments of the present application 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 application 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 wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

The battery cell disclosed by the embodiment of the application 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 application 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 application provides an electricity utilization device using a battery as a power supply, wherein the electricity utilization 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. The electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, and 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 application 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 present application. 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 application, 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 application. 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 lower cover 30, the upper cover 10 and the lower cover 30 being covered with each other, the upper cover 10 and the lower cover 30 together defining a receiving space for receiving the battery cell 20. The lower cover 30 may have a hollow structure with one end opened, the upper cover 10 may have a plate-shaped structure, and the upper cover 10 covers the opening side of the lower cover 30, so that the upper cover 10 and the lower cover 30 together define an accommodating space; the upper cover 10 and the lower cover 30 may be hollow structures each having one side opened, and the opening side of the upper cover 10 is closed to the opening side of the lower cover 30. Of course, the case formed by the upper cover 10 and the lower cover 30 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

Fig. 3 is a schematic structural view of a battery module. 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.

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

The plurality of single units form a battery module, and the battery module is connected with an external conductive piece arranged on an external load through a busbar arranged at an output pole so as to realize electric connection with the external load. The connector can be arranged on the box body of the battery box, the output electrode busbar is connected with the connector, and then the external load is electrically connected with the battery through the connector. If the vehicle wades, the water seepage phenomenon easily occurs at the position where some parts of the battery box are locked through the screws penetrating through the holes, and the water seepage phenomenon easily occurs at the interfaces, explosion-proof valves and the like of the pipelines of the cooling system, which are led to the outside of the battery box. As long as the battery has slight water seepage, the airtight battery environment can generate steam in the high-temperature environment, the steam can influence the output electrode busbar, and the battery management system can detect insulation faults such as electric leakage, abnormal battery information acquisition and the like, so that the reliability of the battery is reduced.

In view of this, this application provides a technical scheme, in this technical scheme, coupling assembling includes output utmost point busbar and fixed subassembly, and fixed subassembly includes mounting box and insulating part, and output utmost point busbar is fixed in the mounting box, and the mounting box has the encapsulating mouth, and insulating part fills in the mounting box, and covers the part that output utmost point busbar is located the mounting box.

FIG. 4 is a schematic structural view of a connection assembly according to some embodiments of the present application; fig. 5 is a schematic view of a portion of a connection assembly according to some embodiments of the present application.

Referring to fig. 4 and 5 in combination, in a first aspect, the present embodiment provides a connection assembly 400, where the connection assembly 400 includes an output electrode bus bar 40 and a fixing assembly 50, the fixing assembly 50 includes a mounting box 51 and an insulating portion 52, the output electrode bus bar 40 is fixed on the mounting box 51, the mounting box 51 has a glue filling opening 51a, the insulating portion 52 is filled in the mounting box 51, and covers a portion of the output electrode bus bar 40 located in the mounting box 51.

A harness isolation plate may be disposed above the battery 100 module, and a bus bar is positioned through the harness isolation plate, and is connected with electrode terminals of the battery cells 20, and the plurality of battery cells 20 are connected in series or in parallel with each other through the bus bar. Wherein the output electrode busses 40 are provided at the output electrodes of the battery 100 for outputting the electric power of the entire battery 100 module to an external load. For example, a connector may be provided in the case of the battery 100, and the output electrode buss 40 is connected to the connector, and is electrically connected to an external load through the connector.

The mounting case 51 may be fixed to a case of the battery 100, a connector, or a battery 100 module. The mounting box 51 may be rectangular, square or cylindrical, and the glue filling port 51a may be rectangular, square or circular. The output pole buss bar 40 may be secured to the mounting box 51 by bolts, snaps, or the like. The output electrode busbar 40 includes a positive electrode busbar portion 41 and a negative electrode busbar portion 42, and the positive electrode busbar portion 41 and the negative electrode busbar portion 42 may share one mounting case 51, or may be provided with two mounting cases 51, respectively, and the positive electrode busbar portion 41 and the negative electrode busbar portion 42 are fixed to the two mounting cases 51 in one-to-one correspondence, respectively.

When the insulating part 52 is prepared, the output electrode bus 40 can be fixed in the mounting box 51, then the fluid insulating material is poured into the mounting box 51 through the glue filling opening 51a, the insulating material covers the output electrode bus 40 in the mounting box 51, and the insulating part 52 is formed after the insulating material is solidified. The insulating material may be insulating glue, such as epoxy resin, silicone rubber, polyurethane, acrylate, polyether sulfone, etc. The insulating part 52 can also be prepared by flame-retardant and fire-resistant sealing glue, for example, the flame-retardant and fire-resistant glue formed by preparing 107 glue (alpha, omega-hydroxy-terminated polydimethylsiloxane), zinc borate, aluminum hydroxide, calcium carbonate and simethicone is adopted, and the insulating part 52 formed by curing has good insulating performance, can also be flame-retardant, and further improves the reliability of the battery 100.

In the above-described scheme, the output electrode buss 40 has one end connected to the battery cell 20 and the other end connected to an external connector. Since the output electrode buss 40 is fixed to the mounting box 51, the insulating portion 52 is filled in the mounting box 51, and the portion of the insulating portion 52 located at the output electrode buss 40 is covered by the glue filling opening 51a of the mounting box 51, not only is the output electrode buss 40 further fixed, but also the output electrode buss 40 is insulated and protected, and the insulating performance of the connection assembly 400 is improved, so that the reliability of the battery 100 is enhanced.

In some embodiments, the mounting box 51 includes a bottom plate 511 and a side wall 512, wherein the side wall 512 is circumferentially disposed along the bottom plate 511, and a glue filling opening 51a is formed on a side of the side wall 512 facing away from the bottom plate 511.

The bottom plate 511 may be rectangular, square, circular, or other polygonal shape, and the side walls 512 are circumferentially arranged along the periphery of the bottom plate 511 and form a containing cavity together with the bottom plate 511. The output electrode busbar 40 can pass through the mounting box 51 to be positioned in the accommodating cavity, and when the insulating part 52 is prepared, a heated insulating material can be injected into the accommodating cavity from the glue filling opening 51a and covers the busbar positioned in the accommodating cavity, and the insulating part 52 positioned in the accommodating cavity is obtained after the insulating material is solidified.

In the above scheme, through the cooperation of bottom plate 511 and side wall 512, can protect the busbar subassembly that is located in mounting box 51 better, and side wall 512 deviates from the bottom plate 511 one side in addition is whole to be the glue filling mouth 51a, has increased the area of glue filling mouth 51a, and the glue filling of insulating part 52 forms.

FIG. 5 is a schematic view of a portion of a connection assembly according to some embodiments of the present application; fig. 6 is a partial top view of a connection assembly according to some embodiments of the present application.

Referring to fig. 5 and fig. 6 in combination, in some embodiments, the side wall 512 is provided with a first via 51b and a second via 51c disposed opposite to each other, and the first via 51b and the second via 51c are used for the output electrode bus 40 to pass through.

The side wall 512 is a cuboid, and includes a first side plate 513 and a second side plate 514 disposed opposite to each other, the first via 51b is disposed on the first side plate 513, and the second via 51c is disposed on the second side plate 514. The first and second vias 51b and 51c are arranged along the length direction of the output electrode buss bar 40, and the shapes and sizes of the first and second vias 51b and 51c are matched with those of the output electrode buss bar 40, so that the output electrode buss bar 40 can pass through the first and second vias 51b and 51c respectively and be exposed outside the mounting box 51.

In the above scheme, the output electrode busbar 40 sequentially passes through the first via hole 51b and the second via hole 51c and then is connected with an external connector, and the first via hole 51b and the second via hole 51c have an initial positioning function on the output electrode busbar 40, so that the insulating part 52 is prepared by a glue filling process.

In some embodiments, the connection assembly 400 further includes a positioning post 53, a third via (not shown) through which the positioning post 53 passes is formed on the bottom plate 511, and a fourth via (not shown) through which the positioning post 53 passes is formed on the output electrode busbar 40.

The positioning column 53 may be a bolt, a stud, or the like. When the output electrode bus bar 40 is fixed, the positioning posts 53 can pass through the third via hole and the fourth via hole from the lower side of the bottom plate 511 respectively, or pass through the fourth via hole and the third via hole from the upper side of the bottom plate 511 respectively.

In the above-mentioned solution, the positioning post 53 passes through the third via hole of the bottom plate 511 and the fourth via hole of the output electrode busbar 40, so that the output electrode busbar 40 is further positioned, and before the glue filling process step, the output electrode busbar 40 is fixed relative to the bottom plate 511 of the mounting box 51.

In some embodiments, the connection assembly 400 further includes a fastener 54 threadably coupled to the positioning post 53, the fastener 54 being disposed on a side of the output pole buss 40 facing away from the base plate 511.

Illustratively, the locating posts 53 are bolts and the fasteners 54 are nuts. The positioning post 53 can be first inserted through the third via hole and the fourth via hole from the lower side of the bottom plate 511, and then the fastener 54 can be locked on the upper side of the output electrode busbar 40.

In the above scheme, during assembly, the side of the bottom plate 511 away from the side wall 512 can be used to pass the positioning column 53 through the third via hole and the fourth via hole in sequence, and then the fastener 54 is locked at the end of the positioning column 53 away from the bottom plate 511. The structure of this application embodiment is convenient for assemble, can improve assembly efficiency.

In some embodiments, the output electrode buss bar 40 includes the positive electrode buss portion 41 and the negative electrode buss portion 42, and the positive electrode buss portion 41 and the negative electrode buss portion 42 are both fixed to the mounting box 51, and the mounting box 51 does not need to be separately prepared for the positive electrode buss portion 41 and the negative electrode buss portion 42, so that the structure is simplified, and the cost is reduced.

FIG. 7 is a schematic view of a connection assembly according to other embodiments of the present application; fig. 8 is a partial top view of a connection assembly according to further embodiments of the present application.

Referring to fig. 7 and 8 in combination, in some embodiments, the mounting box 51 includes an insulating plate 517 for dividing the interior of the mounting box 51 into a first subchamber 515 and a second subchamber 516, the positive bus bar 41 being located in the first subchamber 515 and the negative bus bar 42 being located in the second subchamber 516.

The mounting box 51 is a rectangular parallelepiped, and includes a first side plate 513 and a second side plate 514 disposed opposite to each other, and both ends of the insulating plate 517 are connected to the first side plate 513 and the second side plate 514, respectively. The volumes of the first sub-chamber 515 and the second sub-chamber 516 may be the same, i.e. the insulating plate 517 uniformly separates the accommodation chambers of the mounting box 51; or the volumes of the first subchamber 515 and the second subchamber 516 may also be different.

A first via hole 51b and a second via hole 51c are respectively formed in the mounting box 51 corresponding to the first subchamber 515, so that the positive electrode confluence part 41 passes through, and the positive electrode confluence part 41 is located in the first subchamber 515. The mounting box 51 is provided with a first via hole 51b and a second via hole 51c corresponding to the second subchamber 516, so that the negative electrode confluence part 42 passes through, and the negative electrode confluence part 42 is positioned in the second subchamber 516.

The insulating plate 517 is configured such that the second subchambers 516 of the first subchamber 515 of the mounting box 51 are provided with glue filling openings 51a, and insulating materials are respectively injected into the first subchamber 515 and the second subchamber 516 through two different glue filling openings 51a during glue filling, so that insulating parts 52 are formed in the first subchamber 515 and the second subchamber 516.

The insulating plate 517 of the present embodiment further improves the insulating effect between the positive electrode bus bar portion 41 and the negative electrode bus bar portion 42.

In some embodiments, the mounting box 51 is an insulator. The insulating member may be made of epoxy resin, silicone rubber, polyurethane, acrylic ester, polyether sulfone, etc., further improving the insulating performance of the connection assembly 400.

In some embodiments, the output electrode busses 40 are spaced from the bottom plate 511, i.e., there is no direct contact between the output electrode busses 40 and the bottom plate 511, but a gap therebetween, such that the insulation 52 can be filled between the output electrode busses 40 and the bottom plate 511, thereby further improving the insulation performance of the connection assembly 400.

In a second aspect, the present embodiment provides a battery 100, including a battery cell 20 and a connection assembly 400 according to any of the foregoing embodiments, where the output electrode buss 40 is connected to the battery cell 20.

In a third aspect, an embodiment of the present application provides an electrical device, including the battery 100 described above, where the battery 100 is configured to provide electrical energy.

According to some embodiments of the present application, there is provided a connection assembly 400, the connection assembly 400 including an output electrode buss bar 40 and a fixing assembly 50, the fixing assembly 50 including a mounting case 51 and an insulating portion 52, the output electrode buss bar 40 being fixed to the mounting case 51, the mounting case 51 having a glue-pouring opening 51a, the insulating portion 52 being filled in the mounting case 51 and covering a portion of the output electrode buss bar 40 located in the mounting case 51. The mounting box 51 comprises a bottom plate 511 and a side wall 512, the side wall 512 is circumferentially arranged around the bottom plate 511, and a glue filling opening 51a is formed in one side, away from the bottom plate 511, of the side wall 512.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 embodiments, and are intended to be included within the scope of the 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 application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A connection assembly, comprising:

an output electrode bus;

the fixed subassembly, including mounting box and insulating part, the output utmost point busbar is fixed in the mounting box, the mounting box has the encapsulating mouth, insulating part fill in the mounting box, and cover the output utmost point busbar is located the part of mounting box.

2. The connection assembly of claim 1, wherein the mounting box comprises:

a bottom plate;

and a side wall is arranged along the circumferential direction of the bottom plate in a surrounding manner, and one side of the side wall, which is away from the bottom plate, is the glue filling opening.

3. The connection assembly of claim 2, wherein the side wall is provided with a first via hole and a second via hole disposed opposite to each other, the first via hole and the second via hole being used for the output electrode bus bar to pass through.

4. The connection assembly of claim 2, further comprising a positioning post, wherein the bottom plate is provided with a third via through which the positioning post passes, and wherein the output electrode buss bar is provided with a fourth via through which the positioning post passes.

5. The connection assembly of claim 4, further comprising a fastener threadably coupled to the locating post, the fastener disposed on a side of the output pole buss bar facing away from the base plate.

6. The connection assembly of claim 1, wherein the output pole buss bar includes a positive pole buss portion and a negative pole buss portion, both secured to the mounting box.

7. The connection assembly of claim 6, wherein the mounting box includes an insulating plate for dividing an interior of the mounting box into a first subchamber and a second subchamber, the positive bus bar being located in the first subchamber and the negative bus bar being located in the second subchamber.

8. The connection assembly of any one of claims 1-7, wherein the mounting box is an insulator.

9. The connection assembly of any one of claims 2-5, wherein the output pole buss is spaced apart from the base plate.

10. A battery, comprising:

a battery cell; the method comprises the steps of,

the connection assembly of any one of claims 1-9, the output pole buss being connected with the battery cell.

11. An electrical device comprising a battery as claimed in claim 10, said battery being arranged to provide electrical energy.