CN217387478U - Battery device and fixing plate - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery device and fixed plate. The battery device includes: a battery cell having first and second electrode terminals opposite in polarity; a bus bar including a first bus portion and a second bus portion, the first bus portion being connected to the first electrode terminal, the second bus portion being connected to the second electrode terminal; the fixing plate comprises a body part and a separator, wherein the separator is arranged on the body part and protrudes out of the surface so as to insulate and separate a first bus bar part of one bus bar and a second bus bar part of the other bus bar in two adjacent bus bars of the same battery unit; the separator is provided with an accommodating groove. Among this battery device, the holding tank on the separator can hold the condensation that produces because of temperature variation in the use to avoid the condensation as conductive medium to switch on, take place the short circuit with the first portion of converging that same battery unit links to each other with the second portion of converging, in order to promote battery device's security performance and life.

Description

Battery device and fixing plate

Technical Field

The utility model relates to a battery technology field especially relates to a battery device and fixed plate.

Background

In the process of placing the battery device, under the influence of temperature change, condensation may be generated on the surfaces of the bus bar, the box cover and the like, and the condensation can be used as a conductive medium to cause short circuit.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery device and fixed plate to promote battery device's security performance, avoid the inside short circuit that takes place of battery device.

In order to achieve the above purpose, the utility model provides the following technical scheme:

according to a first aspect of the present invention, there is provided a battery device, comprising:

a battery unit including at least one battery having first and second electrode terminals of opposite polarities;

a bus bar located at a side of the battery cell where the first and second electrode terminals are provided; the bus bar includes a first bus portion connecting the first electrode terminal of one of the adjacent two battery cells and a second bus portion connecting the second electrode terminal of the other of the adjacent two battery cells;

a fixing plate for fixing the bus bar; the fixing plate comprises a body part and a separator, wherein the separator is arranged on the body part and protrudes out of the surface of the body part so as to insulate and separate a first bus part of one bus bar and a second bus part of the other bus bar in two adjacent bus bars of the same battery unit; the separator is provided with an accommodating groove for accommodating condensation.

In the battery device provided by the application, two busbars are connected to each battery unit, specifically, a first electrode terminal of each battery unit is connected with a first busbar part of one busbar, a second electrode terminal of each battery unit is connected with a second busbar part of the other busbar, batteries in each battery unit are connected in parallel through the busbars, and adjacent battery units are connected in series through the busbars; the bus bars are mounted on the fixing plate, and the spacers on the fixing plate can insulate the first bus bar portion of one bus bar and the second bus bar portion of the other bus bar in two adjacent bus bars connecting the same battery unit, so as to prevent the first bus bar portion and the second bus bar portion connecting the same battery unit from short-circuiting. Simultaneously, every separator is equipped with the holding tank, and this holding tank can hold the condensation that battery device produced because of temperature variation in the use to avoid the condensation as conductive medium to switch on, take place the short circuit with the first portion of converging that links to each other with same battery unit with the second portion of converging, thereby can promote battery device's security performance and life.

According to a second aspect of the present application, there is provided a fixing plate for fixing bus bars, comprising a body portion and a partition, the partition being provided on the body portion and protruding from a surface of the body portion to insulate and separate a first bus bar portion of one bus bar and a second bus bar portion of another bus bar, which are connected to two adjacent bus bars of the same battery cell and have opposite polarities; the separator is provided with an accommodating groove for accommodating condensation.

In the fixing plate provided by the application, the fixing plate is used for fixing the busbars, and the separating piece on the fixing plate can insulate the first busbar part of one busbar and the second busbar part of the other busbar in two adjacent busbars of the same battery unit so as to avoid short circuit between the first busbar part and the second busbar part which are connected with the same battery unit. Simultaneously, every separator is equipped with the holding tank, and this holding tank can hold the condensation that battery device produced because of temperature variation in the use to avoid the condensation as conductive medium to switch on, take place the short circuit with the first portion of converging that links to each other with same battery unit with the second portion of converging, thereby can promote battery device's security performance and life.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic structural diagram of a battery device provided in an embodiment of the present application;

FIG. 2 is an exploded view of a portion of the structure of FIG. 1;

fig. 3 is a schematic structural diagram of a fixing plate in a battery device according to an embodiment of the present disclosure;

FIG. 4 is an enlarged view of a portion of the stationary plate of FIG. 2;

fig. 5 is a partial cross-sectional view of the fixation plate of fig. 4;

fig. 6 is a schematic structural diagram of a fixing plate in a battery device according to an embodiment of the present disclosure;

FIG. 7 is a further enlarged partial view of the stationary plate of FIG. 2;

fig. 8 is a third partially enlarged view of the fixing plate of fig. 2.

The reference numerals are explained below:

100. a battery cell; 110. a first electrode terminal; 120. a second electrode terminal; 200. a bus bar; 210. a first bus portion; 220. a second bus portion; 300. a fixing plate; 310. a body portion; 311. a first hollow-out section; 312. a second hollowed-out portion; 313. flanging; 320. a separator; 330. accommodating grooves; 340. a boss portion; 350. an opening; 360. an arc-shaped transition portion; A. a placement space.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

The embodiment of the application provides a battery device. Fig. 1 is a schematic structural diagram of a battery device provided in an embodiment of the present application; fig. 2 is an exploded view of a portion of the structure of fig. 1. As shown in fig. 1 and 2, the battery device includes:

a battery cell 100, the battery cell 100 including at least one battery having a first electrode terminal 110 and a second electrode terminal 120 opposite in polarity;

a bus bar 200, the bus bar 200 being located at a side of the battery cell 100 where the first electrode terminal 110 and the second electrode terminal 120 are provided; the bus bar 200 includes a first bus part 210 and a second bus part 220, the first bus part 210 connecting the first electrode terminal 110 of one battery cell 100 of the adjacent two battery cells 100, the second bus part 220 connecting the second electrode terminal 120 of the other battery cell 100 of the adjacent two battery cells 100;

a fixing plate 300, the fixing plate 300 being used to fix the bus bar 200; the fixing plate 300 includes a body 310 and a spacer 320, the spacer 320 is disposed on the body 310 and protrudes from a surface of the body 310 to insulate and separate the first bus 210 of one bus 200 and the second bus 220 of another bus 200 of two adjacent buses 200 of the same battery cell 100; the partition member 320 is provided with a receiving groove 330 for receiving the condensation.

It should be noted that, in the battery device provided in the embodiment of the present application, two bus bars 200 are connected to each battery unit 100, specifically, the first electrode terminal 110 of each battery unit 100 is connected to the first bus portion 210 of one bus bar 200, the second electrode terminal 120 of each battery unit 100 is connected to the second bus portion 220 of the other bus bar 200, the batteries in each battery unit 100 are connected in parallel through the bus bars 200, and the adjacent battery units 100 are connected in series through the bus bars 200; the bus bars 200 are mounted to the fixing plate 300, and the spacers 320 on the fixing plate 300 may insulate the first bus bar portion 210 of one bus bar 200 and the second bus bar portion 220 of the other bus bar 200, which connect adjacent two bus bars 200 of the same battery cell 100, to prevent the first bus bar portion 210 and the second bus bar portion 220, which connect the same battery cell 100, from being short-circuited. Meanwhile, each of the separators 320 is provided with an accommodating groove 330, and the accommodating groove 330 can accommodate condensation generated by temperature change during the use of the battery device, so as to prevent the condensation from conducting the first bus bar portion 210 and the second bus bar portion 220 connected to the same battery unit 100 as a conductive medium, and to prevent short circuit, thereby improving the safety performance and the service life of the battery device.

In one embodiment, the top of the separator 320 is provided with a receiving groove 330.

It should be noted that, as shown in fig. 3, the receiving groove 330 is disposed on the top of the partition 320, when the bus bar 200 or the box cover generates condensation, the condensation can flow into the receiving groove 330, so as to prevent the condensation as a conductive medium from conducting the first bus bar portion 210 and the second bus bar portion 220 connected to the same battery unit 100 and causing short circuit, thereby improving the safety performance and the service life of the battery device.

In one embodiment, referring to fig. 4 and 5, the partition 320 divides the body portion 310 into at least two placing spaces a, each placing space a placing at least one busbar 200 therein;

the accommodating groove 330 communicates with one of the two placing spaces a, and the groove bottom of the accommodating groove 330 does not exceed the bottom surface of the placing space a.

It should be noted that, when the accommodating groove 330 is disposed on the partition 320, a line of defense can be formed at the partition 320, so that the condensation can be placed into the accommodating groove 330 as much as possible, and the condensation can be prevented from spreading over the partition 320 to cause short circuit of the adjacent bus bars 200, thereby improving the safety performance of the battery device.

It should be understood that the manner of communicating the accommodating groove 330 with the placing space a is not limited to the structure shown in fig. 5, and a through hole structure may be adopted to achieve the communication. Of course, in order to prevent the condensation from flowing back to the placing space a, the bottom of the accommodating groove 330 is not beyond the bottom of the placing space a.

In addition, the battery device provided by the embodiment of the application divides the body portion 310 into at least two placing spaces a through the partition 320, so that the fixing plate 300 has a simple overall structure, and thus, the preparation process can be simplified and the preparation efficiency can be improved.

In one embodiment, the accommodating groove 330 is formed in the placing space a.

It should be noted that, the accommodating groove 330 is disposed in the accommodating space a, so as to assist in accommodating condensation, and to better prevent condensation from serving as a conductive medium to conduct the first bus bar portion 210 and the second bus bar portion 220 connected to the same battery unit 100, and to cause short circuit, so that the safety performance and the service life of the battery device can be improved.

When the accommodating grooves 330 in the accommodating space a are provided, the number of the accommodating grooves 330 in each accommodating space a may be one or more, and the length of each accommodating groove 330 may be set as required.

In a specific embodiment, the accommodating grooves 330 in each accommodating space a are arranged at intervals, each accommodating groove 330 can be arranged at different positions according to requirements, and the shape and size of each accommodating groove 330 can be independently arranged.

In one embodiment, as shown in fig. 1, 2, 4 and 5, the battery unit 100 includes a plurality of batteries, and the bus bar 200 is used to realize parallel connection of the plurality of batteries in each battery unit 100;

the accommodating groove 330 extends in the parallel direction of the batteries and extends to at least one side of the fixing plate 300, and the accommodating groove 330 in each accommodating space A is arranged in a penetrating manner, so that the protection effect can be better exerted.

It should be noted that each receiving groove 330 is disposed through, so as to better receive the condensation, and facilitate the condensation in the receiving groove 330 to be guided out of the fixing plate 300.

In one embodiment, the groove walls of the receiving groove 330 are provided with flow directing surfaces.

It should be noted that the flow guiding surface disposed on the wall of the accommodating groove 330 is convenient for the condensation to be guided into the accommodating groove 330, so that the accommodating groove 330 can exert a better protection effect.

In a specific embodiment, as shown in fig. 6, when the receiving groove 330 is provided at the top of the partitioning member 320, the flow guide surface is a slope formed by the top surface of the partitioning member 320 downward.

In another specific embodiment, when the receiving groove 330 communicates with the placing space a, the flow guiding surface is a slope (not shown) formed downward from the bottom surface of the placing space a.

In an embodiment, please refer to the structure shown in fig. 5 in combination with fig. 1 and fig. 2, a protrusion 340 is disposed on a side of the main body 310 facing the battery unit 100, and a vertical projection of the protrusion 340 on the main body 310 covers at least a portion of a vertical projection of the receiving groove 330 on the main body 310;

the receiving groove 330 extends partially to the protrusion 340 along the depth direction of the receiving groove 330.

It should be noted that, the protrusion 340 is formed on the side of the main body 310 facing the battery unit 100, so as to increase the depth of the receiving groove 330 and improve the protection effect of the receiving groove 330.

Specifically, since it is necessary to secure the structural strength of the fixing plate 300, the receiving groove 330 has a certain limit in the depth of the body part 310. The protrusion 340 is provided at a side of the body part 310 facing the battery cell 100, so that the receiving groove 330 may partially extend to the protrusion 340 to increase a depth, thereby enhancing a protection effect of the receiving groove 330.

Of course, the vertical projection of the protrusion 340 on the body portion 310 may be set to completely cover the vertical projection of the receiving groove 330 on the body portion 310, so as to increase the volume of the receiving groove 330.

In a specific embodiment, there may be provided: the vertical projection of the protrusion 340 on the body 310 covers the vertical projection of the spacer 320 on the body 310, as shown in fig. 5 for example.

It should be noted that, when the size of the protruding portion 340 is increased to avoid the accommodating groove 330 being opened, the accommodating groove 330 has a leakage point, so that the safety performance of the battery device provided in the embodiment of the present application can be improved.

In addition, increasing the size of the protrusion 340 can improve the structural strength of the fixing plate 300, and prevent the fixing plate 300 from being broken during use, and further prevent the connection relationship between the bus bar 200 and the battery unit 100 from being failed due to the breakage of the fixing plate 300, so as to improve the service life of the battery device.

In one embodiment, the protrusions 340 abut against the battery cell 100 to improve stability of the relative position between the fixing plate 300 and the battery cell 100.

In one embodiment, referring to the structure shown in fig. 7, an opening 350 is formed at the edge of the fixing plate 300, and the receiving groove 330 is connected to the opening 350.

It should be noted that the opening 350 is convenient for the condensation to be guided out of the accommodating groove 330, so as to prevent the condensation from being accumulated too much in the accommodating groove 330 and spreading over the separating member 320, thereby preventing a short circuit from occurring between adjacent busbars 200, and improving the protection effect.

In a specific embodiment, as shown in fig. 7, in the fixing plate 300, the edge of the body portion 310 is provided with a flange 313 protruding away from the battery unit 100, and the flange 313 is provided with an opening 350; the receiving groove 330 is connected to the opening 350 and communicates with the opening 350.

It should be noted that the flange 313 may be matched with the partition 320 to fix the busbar 200, and meanwhile, the flange 313 may prevent the condensation in the placing space a from flowing at will, so that the safety performance of the battery device provided in the embodiment of the present application may be improved.

In another specific embodiment, as shown in fig. 8, in the fixing plate 300, the side of the body portion 310 facing away from the battery cell 100 is a plane;

the receiving groove 330 extends to the edge of the fixing plate 300, and an opening 350 is formed at a position of the edge of the fixing plate 300 to which the receiving groove 330 extends.

It should be noted that the above-mentioned structure can simplify the structure of the fixing plate 300, and the condensation can be led out of the fixing plate 300 through the opening 350.

In one embodiment, with continued reference to the structure shown in fig. 8, the fixing plate 300 further includes an arc-shaped transition portion 360, the arc-shaped transition portion 360 is connected to the edge of the body portion 310 along the arrangement direction of the plurality of batteries, and the arc-shaped transition portion 360 is provided with an opening 350.

The arc-shaped transition portion 360 may guide the condensation led out from the opening 350 to the side surface of the battery unit 100, so as to protect the connection between the battery unit 100 and the bus bar 200, and prevent the condensation from splashing from the opening 350 to the connection between the battery unit 100 and the bus bar 200, thereby causing a short circuit.

The fixation plate 300 may also be provided with an extension that connects the arc-shaped transition 360 to further direct the flow of condensation. Of course, the extension portion may also be used to fix other structures, and details are not described again.

It is noted that the spacer 320 of the fixing plate 300 needs to insulate the adjacent bus bars 200.

In one embodiment, the surface of the partition 320 of the fixing plate 300 is provided with an insulating structure, which may be one or more of an insulating coating, an insulating film, or an insulating tape.

It should be noted that, an insulating structure may be further disposed on the surface of the bus bar 200 and the inner wall of the placing space a for auxiliary insulation, so as to further improve the insulating effect.

In another embodiment, the spacer 320 of the fixing plate 300 is made of an insulating material, and even the fixing plate 300 is entirely made of an insulating material.

Illustratively, the insulating material may be selected from one or more of PC (polycarbonate), PP (polypropylene), or a composite of PC and ABS (acrylonitrile butadiene styrene).

It should be noted that, when the entire fixing plate 300 is made of an insulating material, the insulating effect between the adjacent bus bars 200 can be better ensured, so that the short circuit phenomenon can be prevented, and the safety performance of the battery device can be improved. Meanwhile, the fixing plate 300 may also serve as an insulating plate to insulate the battery from other structures.

It should be noted that the accommodating groove 330 may not be covered by the bus bar 200, so that the condensed water can better flow into the accommodating groove 330, and the protection effect can be better exerted. Of course, the bus bar 200 may be further disposed to cover a portion of the accommodating groove 330, so as to improve the integration of the fixing plate 300, provide space utilization, and facilitate the miniaturization of the battery device.

In an embodiment, with continued reference to the structure shown in fig. 1 and fig. 4, a first hollow portion 311 and a second hollow portion 312 are disposed in the placing space a; in two adjacent busbars 200 corresponding to each battery cell 100, the first busbar 210 of one busbar 200 is connected to the first electrode terminal 110 of the battery cell 100 through the first hollow 311, and the second busbar 220 of the other busbar 200 is connected to the second electrode terminal 120 of the battery cell 100 through the second hollow 312.

It should be noted that the fixing plate 300 provided in the embodiment of the present application may pre-fix the position of the bus bar 200 through the first hollow portion 311 and the second hollow portion 312, so as to improve the connection and alignment accuracy between the bus bar 200 and the battery unit 100.

Illustratively, as shown in fig. 1 and 2, each battery cell 100 includes 4 batteries. It is noted that, as shown in fig. 2, each cell has a first electrode terminal 110 and a second electrode terminal 120 having opposite polarities.

It is to be understood that the first electrode terminal 110 and the second electrode terminal 120 in each cell have opposite polarities and are disposed with insulation therebetween. Specifically, when the first electrode terminal 110 is a positive polarity terminal, the second electrode terminal 120 is a negative polarity terminal, whereas when the first electrode terminal 110 is a negative polarity terminal, the second electrode terminal 120 is a positive polarity terminal. Specifically, the positive polarity configuration of one cell 100 is connected to the negative polarity configuration of another cell 100 by a bus bar 200, and adjacent cells 100 are connected in series by a bus bar 200. It should be understood that, at this time, the batteries are connected in parallel in each battery unit 100.

In one embodiment, the battery is a cylindrical battery, and the battery cylinder includes a battery case as the first electrode terminal 110 and a pole as the second electrode terminal 120, the pole being disposed to protrude from the surface of the battery case;

the first hollow-out portion 311 leaks out of at least part of the pole, and the second hollow-out portion 312 leaks out of at least part of the battery case, so that the bus bar 200 is connected with the cylindrical battery in the battery unit 100.

Specifically, with continuing reference to the structure shown in fig. 2, each battery includes a housing and a terminal post protruding from the housing, wherein the terminal post of the battery is used as the first electrode terminal 110, and the terminal post protrudes from the housing, and an end surface of the terminal post far from the battery is used as a leading-out surface of the first electrode terminal 110; the case of the battery serves as the second electrode terminal 120, and the end surface of the case corresponding to the post protruding case serves as the lead-out surface of the second electrode terminal 120. It should be understood that two exit faces are used to connect the bus bar 200.

In one embodiment, the bus bars 200 are located at one side of the cylindrical battery disposition pole, and two adjacent bus bars 200 connect the same battery unit 100, wherein,

the first bus portion 210 of one bus bar 200 is connected to the battery case, the second bus portion 220 of the other bus bar 200 is connected to the pole, and a separator 320 is provided between the adjacent bus bars 200.

It should be noted that the spacer 320 on the fixing plate 300 may insulate the first bus bar portion 210 of one bus bar 200 and the second bus bar portion 220 of the other bus bar 200 connected to two adjacent bus bars 200 of the same battery unit 100, so as to prevent the first bus bar portion 210 and the second bus bar portion 220 connected to the same battery unit 100 from being short-circuited. Meanwhile, each of the separators 320 is provided with an accommodating groove 330, and the accommodating groove 330 can accommodate condensation generated by temperature change during use of the battery device, so as to prevent the condensation from conducting and shorting the first bus bar portion 210 and the second bus bar portion 220 connected to the same battery unit 100 as a conductive medium, thereby improving safety performance and service life of the battery device.

In one embodiment, with continued reference to the structure shown in fig. 1 and 4, in the first bus bar portion 210 corresponding to each battery unit 100, the first bus bar portion 210 is provided with a first connecting portion at a position corresponding to each battery in the battery unit 100. Illustratively, the first bus bar portion 210 is provided with a first connecting portion at a position corresponding to the pole.

Similarly, in the second bus bar portion 220 corresponding to each battery unit 100, the second bus bar portion 220 is provided with a second connecting portion at a position corresponding to each battery in the battery unit 100. Illustratively, the second bus bar part 220 is provided with a second connecting part at a position corresponding to an end surface of the housing.

In one embodiment, the projection abuts against a case end face of the battery.

It should be noted that, since the first connecting portion and the second connecting portion are connected to the battery unit 100 through the hollow structure, the supporting effect can be improved by the abutting relationship, so that the stability of the bus bar 200 connected to the battery unit 100 is better, and the connection accuracy of the bus bar 200 to the battery unit 100 is ensured.

It is noted that when the battery is a cylindrical battery, the battery case is cylindrical. Because the second connecting part is connected with the leading-out surface of the battery shell, the second connecting part can be arranged to surround at least part of the pole so as to avoid the pole. Illustratively, the second connecting part is an arc, and the axis line of the arc is collinear with the center line of the pole.

In one embodiment, the side of the end surface of the battery case facing the second connecting portion is provided with a protruding structure to facilitate the connection of the second connecting portion with the end surface of the battery case.

It should be noted that the protruding structure may make the first bus bar portion 210 and the second bus bar portion 220 located at almost the same height on the sides facing away from the battery. It should be understood that the protruding dimension of the protruding structure may need to be adjusted according to the height of the pole, and is not described herein; the "same layer arrangement" may be a complete layer or an approximate layer.

In one embodiment, the protrusion structure is also arc-shaped, and the center line of the arc is collinear with the center line of the terminal post, so as to ensure the connection area between the second current collecting part 220 and the end surface of the battery case.

In addition, when first connecting portion connect utmost point post, the shape that can set up first connecting portion is similar with the shape of utmost point post to guarantee the connection area of first connecting portion and utmost point post, thereby guarantee the area of overflowing, promote the ability of overflowing.

Illustratively, the first connection portion is a quasi-circular shape similar to a circular end surface of the pole. It should be understood that the first connecting portion may have a substantially circular structure, and in particular, since the first bus bar portion 210 needs to be connected to the main body portion, the first bus bar portion 210 may have a slightly deformed shape at the connection portion, forming a quasi-circular shape.

It should be noted that the first connecting portion and the terminal may be connected by laser welding. In a specific embodiment, a positioning hole can be formed in the first connecting portion, so that the laser device can be accurately positioned, and the welding accuracy is improved.

The embodiment of the present application also provides a fixing plate 300. Please continue to refer to the structure shown in fig. 1 to 8. The fixing plate 300 is used for fixing the bus bars 200, and includes a body portion 310 and a partition 320, the partition 320 is disposed on the body portion 310 and protrudes out of the surface of the body portion 310 to insulate and separate the first bus bar portion 210 of one bus bar 200 and the second bus bar portion 220 of another bus bar 200, which are connected with opposite polarities, in two adjacent bus bars 200 of the same battery unit 100; the partition member 320 is provided with a receiving groove 330 for receiving the condensation.

It should be noted that, in the fixing plate 300 provided in the embodiment of the present application, the fixing plate 300 is used to fix the bus bars 200, and the spacers 320 on the fixing plate 300 can insulate the first bus bar portion 210 of one bus bar 200 and the second bus bar portion 220 of another bus bar 200 connected to two adjacent bus bars 200 of the same battery unit 100, so as to prevent the first bus bar portion 210 and the second bus bar portion 220 connected to the same battery unit 100 from being short-circuited. Meanwhile, each of the separators 320 is provided with an accommodating groove 330, and the accommodating groove 330 can accommodate condensation generated by temperature change during use of the battery device, so as to prevent the condensation from conducting and shorting the first bus bar portion 210 and the second bus bar portion 220 connected to the same battery unit 100 as a conductive medium, thereby improving safety performance and service life of the battery device.

It should be understood that the fixing plate 300 provided in the embodiment of the present application may be configured in any structure of the fixing plate 300 in the battery device, and details are not repeated.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (14)

1. A battery device, comprising:

a battery unit (100), the battery unit (100) comprising at least one battery having a first electrode terminal (110) and a second electrode terminal (120) of opposite polarity;

a bus bar (200), the bus bar (200) being located on a side of the battery cell (100) where the first electrode terminal (110) and the second electrode terminal (120) are provided; the bus bar (200) includes a first bus portion (210) and a second bus portion (220), the first bus portion (210) connecting the first electrode terminals (110) of one battery cell (100) of the adjacent two battery cells (100), the second bus portion (220) connecting the second electrode terminals (120) of the other battery cell (100) of the adjacent two battery cells (100);

a fixing plate (300), the fixing plate (300) being used to fix the bus bar (200); the fixing plate (300) comprises a body part (310) and a partition (320), wherein the partition (320) is arranged on the body part (310) and protrudes out of the surface of the body part (310) so as to insulate and separate a first bus part (210) of one bus bar (200) and a second bus part (220) of the other bus bar (200) in two adjacent bus bars (200) of the same battery unit (100); the partitioning member (320) is provided with a receiving groove (330) for receiving condensation.

2. The battery device according to claim 1, wherein the top of the separator (320) is provided with the receiving groove (330).

3. The battery device according to claim 2, wherein the partition (320) partitions the body portion (310) into at least two placing spaces, each placing space having at least one of the bus bars (200) placed therein;

the accommodating groove (330) is communicated with one of the two placing spaces, and the groove bottom of the accommodating groove (330) does not exceed the bottom surface of the placing space.

4. The battery device according to claim 3, wherein the accommodating groove (330) is provided in the accommodating space to assist in accommodating condensation.

5. The battery device according to any one of claims 1 to 4, wherein the battery unit (100) comprises a plurality of batteries, and the bus bar (200) is used for connecting the plurality of batteries in parallel in each battery unit (100);

the receiving groove (330) extends in a parallel direction of the plurality of batteries and extends to at least one side of the fixing plate (300).

6. The battery device according to claim 5, wherein the edge of the fixing plate (300) is provided with an opening (350), and the receiving groove (330) is connected to the opening (350).

7. The battery device according to claim 6, wherein the fixing plate (300) further comprises an arc-shaped transition portion (360), the arc-shaped transition portion (360) is connected to an edge of the body portion (310) in an arrangement direction of the plurality of batteries, and the arc-shaped transition portion (360) is provided with the opening (350).

8. The battery device according to any one of claims 1 to 4, wherein a side of the body portion (310) facing the battery unit (100) is provided with a protrusion (340), and a vertical projection of the protrusion (340) on the body portion (310) covers a vertical projection of the receiving groove (330) on the body portion (310);

the receiving groove (330) extends partially to the protrusion (340) in a depth direction of the receiving groove (330).

9. The battery device according to claim 8, wherein a vertical projection of the protrusion (340) on the body portion (310) covers a vertical projection of the partition (320) on the body portion (310).

10. The battery device according to claim 9, wherein the protrusion (340) abuts against the battery cell (100).

11. The battery device according to any one of claims 1 to 4, wherein the body portion (310) is provided with a first hollowed-out portion (311) and a second hollowed-out portion (312);

in two adjacent busbars (200) corresponding to each battery unit (100), a first busbar portion (210) of one busbar (200) is connected with a first electrode terminal (110) of the battery unit (100) through the first hollow portion (311), and a second busbar portion (220) of the other busbar (200) is connected with a second electrode terminal (120) of the battery unit (100) through the second hollow portion (312).

12. The battery device according to claim 11, wherein the battery is a cylindrical battery comprising a battery case as a first electrode terminal (110) and a terminal post as a second electrode terminal (120), the terminal post being disposed protruding from a surface of the battery case;

the first hollow-out part (311) leaks out of at least part of the pole, and the second hollow-out part (312) leaks out of at least part of the battery shell, so that the bus bar (200) is connected with the cylindrical battery.

13. The battery device according to claim 12, wherein the bus bars (200) are located on the side of the cylindrical battery where the pole is located, and two adjacent bus bars (200) are connected to the same battery unit (100), wherein,

the first bus-bar part (210) of one bus-bar (200) is connected with the battery shell, the second bus-bar part (220) of the other bus-bar (200) is connected with the pole, and the separator (320) is arranged between the adjacent bus-bars (200).

14. A fixing plate (300) for fixing bus bars (200) is characterized by comprising a body part (310) and a separating piece (320), wherein the separating piece (320) is arranged on the body part (310) and protrudes out of the surface of the body part (310) so as to insulate and separate a first bus bar part (210) of one bus bar (200) and a second bus bar part (220) of the other bus bar (200) which are connected with opposite polarities in two adjacent bus bars (200) of the same battery unit (100); the partitioning member (320) is provided with a receiving groove (330) for receiving condensation.

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