CN218887440U - Battery device - Google Patents

Abstract

The present disclosure relates to the field of battery technology, and discloses a battery device; the battery device comprises a battery pack, an insulating end plate and an electric connecting piece; the battery pack comprises at least two single batteries which are arranged along a first direction; the insulating end plate is fixed on at least one side of the battery pack in the first direction and comprises an end plate body and an accommodating cavity protruding in the direction departing from the battery pack; the electric connecting piece is fixed in the accommodating cavity. The electric connecting piece of the battery device is simple to fix, the electric connecting piece and the battery pack cannot move relatively, and the electric connection failure of the electric connecting piece is avoided; the electric connector also need not fix on the isolation roof beam, avoids setting up the breach in order to fix electric connector on the isolation roof beam, consequently, can not exert an influence to the intensity of isolation roof beam, can not influence battery device's intensity, can not appear insulating failure moreover.

Description

Battery device

Technical Field

The present disclosure relates to the field of battery technologies, and particularly, to a battery device.

Background

At present, new energy electric vehicles are more and more concerned by society, and become the development direction of future vehicles. The battery device is an important component of the electric automobile, and the design optimization of the battery device becomes an important project for the development of the electric automobile.

However, the fixing of the electrical connector in the current battery device is complicated.

It is noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to overcome the above-mentioned disadvantage of the related art in that the fixing of the electrical connector is complicated, and to provide a battery device in which the fixing of the electrical connector is simple.

According to an aspect of the present disclosure, there is provided a battery device, characterized by comprising:

the battery pack comprises at least two single batteries which are arranged along a first direction;

the insulating end plate is fixed on at least one side of the battery pack in the first direction and comprises an end plate body and an accommodating cavity protruding in the direction departing from the battery pack;

and the electric connecting piece is fixed in the accommodating cavity.

In one aspect of the disclosed battery device, an insulating end plate is fixed on at least one side of a first direction of a battery pack, the insulating end plate comprises an end plate body and an accommodating cavity protruding in a direction away from the battery pack, and an electric connecting piece is fixed in the accommodating cavity; make insulating end plate both play the effect of fixed group battery, play the effect of fixed electric connector moreover, avoid setting up dedicated fixing support to electric connector for electric connector's fixed is comparatively simple. On the other hand, the electric connecting piece and the battery pack are indirectly fixed through the insulating end plate, and even if the battery device is vibrated in the using process, the electric connecting piece and the battery pack cannot move relatively, so that the electric connection failure of the electric connecting piece is avoided. On the other hand, the electric connecting piece also need not be fixed on the isolation roof beam, avoids setting up the breach in order to fix electric connecting piece on the isolation roof beam, consequently, can not exert an influence to the intensity of isolation roof beam, can not influence battery device's intensity, insulating inefficacy can not appear moreover.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic structural diagram of an exemplary embodiment of a battery device according to the present disclosure.

Fig. 2 is a partially enlarged schematic view of a portion indicated by H in fig. 1.

Fig. 3 is a schematic structural view of the insulating end plate of fig. 1.

FIG. 4 is a schematic view of the structure of the insulating end plate cooperating with the electrical connector, the circuit board and the stiffener.

Description of the reference numerals:

1. a battery box; 11. a base plate; 12. a side beam;

2. a battery pack; 21. a single battery; 211. a battery body; 212. a battery terminal;

3. an insulating end plate; 31. an accommodating chamber; 32. an end plate body; 33. a baffle plate; 33a, a first baffle; 33b, a second baffle; 33b1, a second plate body; 33b11, a relief portion; 33b2, a limiting plate; 33c, a third baffle; 34. a reinforcing plate; 35. a connecting plate;

4. an electrical connection; 5. a circuit board; 6. an isolation beam; 7. a BMS component; 8. a conductive sheet; 9. a bus bar;

x, a first direction; z, third direction.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The disclosed example embodiment provides a battery device, which is shown in fig. 1-4, wherein the line bars in fig. 1 and 2 are dotted lines, are shielded by devices above the dotted lines, and are indicated by dotted lines, and can include a battery pack 2, an insulating end plate 3 and an electric connector 4; the battery pack 2 may include at least two unit batteries 21, the at least two unit batteries 21 being arranged in the first direction X; the insulating end plate 3 is fixed on at least one side of the first direction X of the battery pack 2, and the insulating end plate 3 comprises an end plate body 32 and a containing cavity 31 protruding in a direction away from the battery pack 2; the electrical connector 4 is fixed in the housing chamber 31.

In the battery device of the present disclosure, on one hand, an insulating end plate 3 is fixed on at least one side of a first direction X of a battery pack 2, the insulating end plate 3 comprises an end plate body 32 and a containing cavity 31 protruding in a direction away from the battery pack 2, and an electric connecting piece 4 is fixed in the containing cavity 31; the insulating end plate 3 has the functions of fixing the battery pack 2 and fixing the electric connecting piece 4, a special fixing support is not arranged on the electric connecting piece 4, and the electric connecting piece 4 is fixed simply; moreover, the technical problem that after the fixed support is fixed on the isolation beam 6, the fixed support and the isolation beam 6 are not firmly fixed, so that the fixed support drives the electric connector 4 to move, and the electric connection of the electric connector 4 fails is solved. On the other hand, the electric connecting piece 4 and the battery pack 2 are indirectly fixed through the insulating end plate 3, and even if the battery device is subjected to vibration in the using process, the electric connecting piece 4 and the battery pack 2 cannot move relatively, so that the electric connection failure of the electric connecting piece 4 is avoided. On the other hand, the electric connecting piece 4 does not need to be fixed on the isolation beam 6, and the electric connecting piece 4 is prevented from being fixed by arranging a notch on the isolation beam 6, so that the strength of the isolation beam 6 cannot be influenced, the strength of the battery device cannot be influenced, and insulation failure cannot occur.

In the present exemplary embodiment, as shown with reference to fig. 1, the battery box 1 may include a base plate 11, a protective cover (not shown in the drawings), and side members 12, and the base plate 11 and the protective cover may be provided in a rectangular shape. The periphery of the bottom plate 11 is provided with side beams 12, the side beams 12 are connected end to form a rectangular frame, and the other opposite side of the side beams 12 is provided with a protective cover which is arranged opposite to the bottom plate 11. The bottom plate 11, the protective cover, and the side members 12 surround a housing space forming the battery box 1.

Of course, in other example embodiments of the present disclosure, the bottom plate 11 and the protective cover may be provided in a circular shape, an oval shape, a trapezoidal shape, etc., and the side frame 12 may be provided in one or more shapes and formed in a circular shape, an oval shape, a trapezoidal shape, etc., so that the battery case 1 is formed in a cylindrical shape, an oval cylindrical shape, a prismatic shape, etc. The battery box 1 may also have other shapes, which are not described herein. Further, the battery box 1 may not include a protective cover, and for example, in the case where a plurality of battery devices are stacked one on top of the other, the battery device located below may not be provided with a protective cover, only the battery device located uppermost may be provided with a protective cover, and the bottom plate 11 of the battery device located one above may serve as a protective cover for the battery device located one below.

It should be noted that the bottom plate 11 may be the bottom plate 11 only used for supporting the battery pack 2, and the bottom plate 11 may also be integrated with the liquid cooling plate, that is, the bottom plate 11 plays a role of both supporting the battery pack 2 and cooling the battery pack 2.

A battery pack 2 is provided in the battery case 1, and the battery pack 2 may include at least two unit batteries 21. In the present exemplary embodiment, a plurality of unit cells 21 are provided in the battery case 1, and the plurality of unit cells 21 are arranged in at least one row in order along the first direction X. One surface of the plurality of unit batteries 21 close to the bottom plate 11 is bonded to the bottom plate 11 by an adhesive, so that the plurality of unit batteries 21 are fixed in the battery box 1. The number of the unit batteries 21 and the number of rows formed by arranging the unit batteries 21 may be set as desired.

In the present example embodiment, the unit battery 21 may include a battery body 211 and a battery post 212, and the battery body 211 may include a battery case, a battery core, and the like.

The battery body 211 may be in the shape of a cuboid, and correspondingly, the battery case may be in the shape of a cuboid, and as shown in fig. 1, the battery case may specifically include two end faces and four side faces; the area of the end face is larger than that of the side face. The two end faces are oppositely arranged; the four side surfaces are arranged oppositely in pairs, and for convenience of description, the four side surfaces can be respectively called two oppositely arranged first side surfaces and two oppositely arranged second side surfaces; the two first side surfaces and the two second side surfaces are connected end to end and surround to form a cuboid cylinder shape; one end face is connected to one side of the two first side faces and the two second side faces, and the other end face is connected to the other opposite side of the two first side faces and the two second side faces. The two end faces, the two first side faces and the two second side faces surround to form a housing chamber 31.

It should be noted that, the two opposite end faces are large faces of the battery body 211, and the four side faces are small faces of the battery body 211, and the four side faces include two pairs of small faces, that is, two first side faces extending along the length direction of the battery case and two second side faces extending along the width direction of the battery case, and the area of the two first side faces is larger than that of the two second side faces, but is smaller than that of the large faces.

Of course, in other example embodiments of the present disclosure, the battery case may be further configured as a cylinder, a prism, a truncated cone, and other structures as needed, which is not described herein again. The material of the battery case may be aluminum, steel, or other metal and alloy materials, and of course, other materials may be used, which are not described herein.

In the present exemplary embodiment, a cell is disposed in the accommodating cavity 31 of the battery case, and the cell is provided as a rectangular parallelepiped adapted to the battery case, and includes a plurality of positive electrode sheets and negative electrode sheets (not shown in the figure) which are stacked.

The two battery posts 212 are positive posts and negative posts, respectively, and a plurality of positive electrode tabs are all connected to the positive posts and a plurality of negative electrode tabs are all connected to the negative posts.

Be provided with the electric core protection film outside electric core, the electric core protection film sets up to the cuboid tube-shape with electric core looks adaptation, is provided with the electric core layer board in the bottom of electric core, and electric core layer board makes to be insulating between electric core and the battery casing with electric core protection film.

An explosion-proof valve may also be disposed between the positive and negative posts, such that the explosion-proof valve is located on the same side of the battery body 211 as the battery post 212, i.e., the explosion-proof valve is located on the side of the battery body 211 close to the bottom plate 11. The explosion-proof valve can be a weak structure arranged on the side surface, and after the battery core is out of thermal runaway, the weak structure (the explosion-proof valve) on the battery shell can be broken by high-temperature gas, sparks and high-temperature solid particles and is sprayed out from the weak structure. The weak structure can be a scratch or a notch arranged on the side surface; the thickness of the side face at the explosion-proof valve can be smaller than the thickness of the side faces at other positions, so that high-temperature gas, sparks and high-temperature solid particles can firstly burst the explosion-proof valve to be sprayed out.

Of course, in some other exemplary embodiments of the present disclosure, the explosion-proof valve may also be disposed at a side disposed opposite to the battery post 212.

In the present exemplary embodiment, the circuit board 5, the bus bar 9, and the conductive sheet 8 are provided on the side of the battery pack 2 facing away from the bottom plate 11. The bus bars 9 may be arranged in two rows, and the bus bars 9 are connected to the battery posts 212, so that the plurality of unit batteries 21 form a desired series-parallel structure. The circuit board 5 is arranged between two rows of busbars 9, the busbars 9 are connected with the circuit board 5 through conducting strips 8, current signals or voltage signals on the busbars 9 can be collected to the circuit board 5 through the conducting strips 8, and the conducting strips 8 can be nickel sheets.

One end of the circuit board 5 is connected with an electric connecting piece 4, the collected current signal or voltage signal can be transmitted outwards through the electric connecting piece 4, the electric connecting piece 4 can be a connector, and the connector transmits current or signals; the connector may include a tab and a socket, one of the tab and the socket may be connected to the circuit board 5 by soldering, and the tab and the socket may be connected by plugging, so that the connector has a plugging direction, which is a plugging and unplugging direction of the connector. Moreover, the vibration direction of the battery device is perpendicular to the bottom plate 11 and also perpendicular to the first direction X, and the plugging direction of the connectors is parallel to the first direction X, so that the vibration direction is perpendicular to the plugging direction of the connectors, and the situation that after the connectors of the battery device are subjected to frequent vibration, the connectors of the connectors are separated from the sockets, and the connection failure is caused is avoided. Of course, the electrical connection 4 can also be another connection device for transmitting current or signals.

The battery device may further include a BMS assembly 7, commonly referred to as a battery caregiver or battery manager, for intelligently managing and maintaining the respective battery cells, preventing overcharge and overdischarge of the battery, extending the lifespan of the battery, and monitoring the state of the battery. The electrical connector 4 is electrically connected to the BMS assembly 7, and particularly, the other of the header and the socket is connected to a connection wire, which is connected to the BMS assembly 7.

Therefore, it is necessary to ensure the reliability of the fixation of the electrical connecting member 4, to avoid the relative movement of the electrical connecting member 4 with the battery pack 2 and the circuit board 5, and thereby to ensure the reliability of the electrical connection between the electrical connecting member 4 and the circuit board 5; moreover, since the electrical connector 4 is used for transferring and transmitting electrical signals, the insulation of the electrical connector 4 needs to be ensured.

In the related art, a dedicated holder for fixing the electric connecting member 4 may be provided to be fixed in the battery case 1, for example, the dedicated holder may be fixed on a support beam in the battery case 1, but this structure requires a separate processing of the dedicated holder, which increases the cost; moreover, the special support needs to be fixed on the supporting beam again, and if the special support is not fixed reliably, when the battery device is vibrated, the special support drives the electric connecting piece 4 to move, so that the circuit board 5 is easily driven to move or the electric connecting piece 4 and the circuit board 5 are easily connected and fail, and the signal cannot be transmitted.

In other related arts, a notch may be provided in the support beam to directly fix the electrical connector 4 in the notch, but such a structure may cause damage to the structure of the support beam, so that the strength of the support beam is reduced, thereby reducing the strength of the entire battery device; moreover, in order to ensure the strength of the supporting beam, the supporting beam is generally made of metal, so that the electrical connection member 4 and the supporting beam are prone to insulation failure due to the arrangement, that is, the electrical connection member 4 and the supporting beam are prone to conduction, and signals cannot be normally transmitted.

In the present exemplary embodiment, an insulating end plate 3 is provided on at least one side of the battery pack 2 in the first direction X, a housing cavity 31 is provided in the insulating end plate 3, and an electrical connector 4 is fixed in the housing cavity 31.

Specifically, as shown in fig. 3, the insulating end plate 3 may include an end plate body 32, the end plate body 32 may be configured to have a flat plate shape, an area of the end plate body 32 is substantially the same as an area of a large surface of the battery cell 21, and an adhesive is adhered between a surface of the end plate body 32 adjacent to the battery pack 2 and the large surface of the battery cell 21, thereby fixedly connecting the insulating end plate 3 and the battery pack 2. Therefore, the electric connecting piece 4 and the battery pack 2 are indirectly fixed through the insulating end plate 3, and the electric connection failure of the electric connecting piece 4 is avoided because the electric connecting piece 4 and the battery pack 2 cannot move relatively even if the battery device is vibrated in the using process. Moreover, a special fixed support does not need to be arranged on the electric connecting piece 4, so that the electric connecting piece 4 is simple to fix; the technical problem that after the fixed support is fixed on the isolation beam 6, the fixed support and the isolation beam 6 are not firmly fixed, the fixed support drives the electric connecting piece 4 to move, and the electric connection of the electric connecting piece 4 fails is solved. Furthermore, the electric connecting piece 4 does not need to be fixed on the isolation beam 6, the electric connecting piece 4 is prevented from being fixed by arranging a notch on the isolation beam 6, so that the strength of the isolation beam 6 cannot be influenced, the strength of the battery device cannot be influenced, and the insulating end plate 3 is made of an insulating material, so that the adverse effect of insulation failure cannot occur.

A plurality of baffles 33 are arranged on one side of the end plate body 32, which is far away from the battery pack 2, the baffles 33 are fixedly connected to the end plate body 32, and the baffles 33 can be integrally formed with the end plate body 32; the plurality of baffle plates 33 may be fixedly connected to the end plate body 32 by welding, screws, or the like. Moreover, a plurality of baffles 33 and end plate body 32 set up perpendicularly, a plurality of baffles 33 and first direction X parallel arrangement promptly, and a plurality of baffles 33 end to end connection forms in proper order and holds chamber 31 for hold chamber 31 and be located the one side that insulating end plate 3 deviates from group battery 2, and hold one side that chamber 31 deviates from group battery 2 and set up to the opening form, the opening direction that holds chamber 31 promptly is parallel with first direction X. Because the direction of the vibration received by the battery device is perpendicular to the bottom plate 11 and also perpendicular to the first direction X, the opening direction of the accommodating cavity 31 is parallel to the first direction X, so that the vibration direction is perpendicular to the opening direction of the accommodating cavity 31, and the electric connecting piece 4 of the battery device is prevented from being separated from the accommodating cavity 31 after being subjected to frequent vibration.

Of course, in other exemplary embodiments of the present disclosure, the accommodating cavity 31 may be disposed on a side of the end plate body 32 away from the bottom plate 11, that is, the accommodating cavity 31 may be disposed on a top of the end plate body 32, and both ends of the accommodating cavity 31 in the first direction X are both disposed in an opening shape, the opening on a side close to the battery pack 2 may be used for the insertion and extraction of the circuit board 5, and the opening on a side away from the battery pack 2 may be used for the insertion and extraction of the electrical connector 4 and the extension of the connection wires. The plurality of baffles 33 may not be provided in parallel with the first direction X, as long as the accommodating chamber 31 formed by the plurality of baffles 33 is open on the side facing away from the battery pack 2.

Referring to fig. 3, the plurality of baffles 33 may include a first baffle 33a, a second baffle 33b, and two third baffles 33c; the first baffle 33a is arranged in parallel with the bottom plate 11; the second baffle 33b is also arranged parallel to the base plate 11, and the second baffle 33b is located on a side of the first baffle 33a facing away from the base plate 11, i.e. the second baffle 33b is arranged opposite to the first baffle 33 a. Two third baffles 33c set up with bottom plate 11 is perpendicular, two third baffles 33c set up relatively, two third baffles 33c are connected between first baffle 33a and second baffle 33b for first baffle 33a, third baffle 33c, second baffle 33b and third baffle 33c end to end connection form the chamber 31 that holds of cuboid in proper order, can set up the bonding glue film between electric connector 4 and the first baffle 33a, fix electric connector 4 in holding the chamber 31 through the bonding glue film.

It should be noted that, because the electrical connector 4 is in the shape of a rectangular parallelepiped, the accommodating cavity 31 is in the shape of a rectangular parallelepiped in which the first baffle 33a, the third baffle 33c, the second baffle 33b, and the third baffle 33c are sequentially connected end to end; in the case where the electric connecting member 4 is cylindrical in shape, the accommodating chamber 31 may be provided in a cylindrical shape, and in this case, the baffle plate 33 may be provided in a cylindrical shape, and the inside of the cylinder is the accommodating chamber 31.

Furthermore, a relief portion 33b11 is provided on the second shutter 33b, and the relief portion 33b11 is used for avoiding a connection portion between the circuit board 5 and the electrical connector 4; dodge portion 33b11 can be for locating the breach that second baffle 33b deviates from the one end of end plate body 32, and the breach can set up to the rectangle, and the area of breach is greater than the area that is close to the one side of second baffle 33b of electric connector 4 moreover for electric connector 4 is connected with circuit board 5 after, can directly place electric connector 4 in holding chamber 31 through this breach.

Of course, in other exemplary embodiments of the disclosure, the relief portion 33b11 may also be a through hole provided on the second baffle 33b, and the area of the through hole is larger than the area of the side of the electrical connector 4 close to the second baffle 33b, so that the electrical connector 4 can be placed in the accommodating cavity 31 directly through the gap after the electrical connector 4 is connected with the circuit board 5.

In the present exemplary embodiment, referring to fig. 1 and 4, the battery device may further include a reinforcing plate 34, the reinforcing plate 34 is provided on a side of the circuit board 5 facing away from the electrical connector 4, the reinforcing plate 34 is disposed opposite to the relief portion 33b11, and both ends of the reinforcing plate 34 are fixed to the second blocking plate 33b. The reinforcing plate 34 is formed in a flat plate shape, and the length of the reinforcing plate 34 may be smaller than or equal to the length of the second barrier 33b, so as to prevent the reinforcing plate 34 from protruding from the second barrier 33b after being fixedly connected to the second barrier 33b. The movement of the circuit board 5 in the third direction Z can be limited through the reinforcing plate 34, so that the connection firmness of the circuit board 5 and the battery pack 2 is ensured; also, although the strength of the second barrier 33b is reduced after the relief portion 33b11 is provided on the second barrier 33b, the strength of the second barrier 33b can be increased by the reinforcing plate 34.

It should be noted that the first direction X is parallel to the bottom plate 11, and the third direction Z is perpendicular to the bottom plate 11.

In addition, as shown in fig. 1 to 3, a second baffle plate 33b is connected to a surface of the end plate body 32 facing away from the bottom plate 11, and the second baffle plate 33b may include a second plate body 33b1 and a limiting plate 33b2. The second plate 33b1 is fixedly connected to one end of the end plate body 32 away from the bottom plate 11, the second plate 33b1 extends toward one side away from the battery pack 2, and the second plate 33b1, the first baffle 33a and the two third baffles 33c form the accommodating cavity 31. The limiting plate 33b2 is connected to the second plate 33b1 and located on one side of the end plate body 32 close to the battery pack 2, that is, one end of the second blocking plate 33b close to the battery pack 2 protrudes out of the end plate body 32 to the side close to the battery pack 2; the limit plate 33b2 is arranged on one side of the battery pack 2 away from the bottom plate 11, or the limit plate 33b2 is lapped on one side of the battery pack 2 away from the bottom plate 11; can reach the spacing effect of group battery 2 on third direction Z through limiting plate 33b2, guarantee the fixed fastness between group battery 2 and the battery box 1.

Referring to fig. 3, a plurality of connecting plates 35 are further disposed on a surface of the end plate body 32 facing away from the battery pack 2, the connecting plates 35 are perpendicular to the end plate body 32, strength of the insulating end plate 3 can be increased by the connecting plates 35, and supporting capability of the insulating end plate 3 for the battery pack 2 is ensured.

Referring to fig. 1, the battery device may further include an isolation beam 6, the isolation beam 6 is disposed in the battery box 1, the isolation beam 6 is disposed on a side of the insulating end plate 3 away from the battery pack 2, and the isolation beam 6 and a surface of the insulating end plate 3 away from the battery pack 2 are bonded together by a bonding layer, so that the isolation beam 6 and the insulating end plate 3 are fixedly connected into a whole; the isolation beam 6 can be used for dividing the accommodating space of the battery box 1 to form a battery compartment for accommodating the battery pack 2 and an electrical appliance compartment for accommodating electronic components.

Hold chamber 31 and set up in isolation beam 6, specifically speaking, first baffle 33a can set up in the one side that isolation beam 6 deviates from bottom plate 11, can support first baffle 33a through isolation beam 6 to the support is located and holds electric connector 4 in chamber 31, avoids battery device in the use, because the vibration leads to first baffle 33a to drop from end plate body 32, thereby makes first baffle 33a can with end plate body 32 firm in connection, keeps the supporting role to electric connector 4.

It should be noted that two insulating end plates 3 may be disposed, and are disposed on two opposite sides of the first direction X of the battery pack 2, and the specific structure of the insulating end plates 3 is described in detail above, and therefore, will not be described herein again. The electrical connectors 4 may be provided in two, one to one, fixed in the receiving cavities 31 of the two insulating end plates 3.

The references to "parallel" and "perpendicular" in this application are not exactly parallel, perpendicular, but rather have some tolerance; for example, the included angle between the two is greater than or equal to 0 ° and less than or equal to 5 °, i.e., the two are considered to be parallel to each other; the included angle between the two is more than or equal to 85 degrees and less than or equal to 95 degrees, namely the two are considered to be mutually perpendicular.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure 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 examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (10)

1. A battery device, comprising:

the battery pack comprises at least two single batteries which are arranged along a first direction;

the insulating end plate is fixed on at least one side of the battery pack in the first direction and comprises an end plate body and an accommodating cavity protruding in the direction departing from the battery pack;

and the electric connecting piece is fixed in the accommodating cavity.

2. The battery device of claim 1, wherein the electrical connection is a connector having a mating direction parallel to the first direction.

3. The battery device according to claim 1, wherein a side of the receiving cavity facing away from the battery pack is provided in an open shape.

4. The battery device according to claim 1, further comprising:

the battery box comprises a bottom plate, and the battery pack and the insulating end plate are arranged in the battery box;

the circuit board is arranged on one side, deviating from the bottom plate, of the battery pack and extends to one side, deviating from the bottom plate, of the electric connecting piece, and the electric connecting piece is fixedly connected to one side, close to the bottom plate, of the circuit board.

5. The battery device of claim 4, wherein the insulating end plate further comprises:

a plurality of baffles, fixed connection in the end plate body, it is a plurality of the baffle is end to end connection in proper order and is formed hold the chamber.

6. The battery device of claim 5, wherein the plurality of baffles comprises:

the first baffle is arranged in parallel with the bottom plate;

the second baffle is arranged in parallel with the bottom plate and is positioned on one side, away from the bottom plate, of the first baffle, and an avoiding part is arranged on the second baffle and is used for avoiding a connecting part of the circuit board and the electric connecting piece;

and the two third baffle plates are perpendicular to the bottom plate and are connected between the first baffle plate and the second baffle plate.

7. The battery device according to claim 6, wherein the avoiding portion is a notch formed at an end of the second stopper facing away from the end plate body.

8. The battery device of claim 6, wherein the second baffle comprises:

the second plate body is fixed at one end of the end plate body, which is far away from the bottom plate;

the limiting plate is connected to the second plate body, and the limiting plate is lapped on one side, away from the bottom plate, of the battery pack.

9. The battery device according to claim 6, further comprising:

the reinforcing plate is arranged on one side, away from the electric connecting piece, of the circuit board, the reinforcing plate and the avoiding portion are arranged oppositely, and two ends of the reinforcing plate are fixed on the second baffle.

10. The battery device according to any one of claims 1 to 9, characterized in that the battery device further comprises:

the isolation beam divides apart into electric storehouse and battery compartment with the battery box, hold the chamber and set up in the isolation beam.

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