CN217788742U - Battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides a battery device which comprises a plurality of batteries, wherein the batteries are stacked along a first direction; the low-voltage signal acquisition assembly comprises an acquisition structure and a plurality of acquisition connecting sheets, wherein one ends of the acquisition connecting sheets are correspondingly electrically connected with the batteries, and the other ends of the acquisition connecting sheets are electrically connected with the acquisition structure. By providing a plurality of cells stacked in a first direction, the energy density of the battery device is increased. Through setting up the battery and gathering the connection piece and be split type structure, correspond the electricity with the one end of a plurality of collection connection pieces and connect in a plurality of batteries, guarantee the connection reliability between battery and the collection connection piece. The other ends of the plurality of acquisition connecting sheets are respectively and electrically connected with the acquisition structure, so that the acquisition structure acquires the information of the plurality of batteries, and the purpose of monitoring the performance indexes such as the electric quantity of the batteries is achieved.

Description

Battery device

Technical Field

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

Background

In the related art, when a battery device is assembled, a battery is generally placed in a battery box, and then a conductive member and the battery are welded to realize functions of electrical connection or detection. After the battery is placed in the battery box, the space between the battery and the battery box is narrow, so that sufficient space cannot be provided for connecting operation tools such as a welding gun, the problem of difficult welding exists, and the connection reliability between the battery and the conductive piece is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery device, convenient assembly uses the reliability high.

According to an aspect of the present invention, there is provided a battery device, the battery device including:

a plurality of cells stacked in a first direction;

the low-voltage signal acquisition assembly comprises an acquisition structure and a plurality of acquisition connecting sheets, wherein one ends of the acquisition connecting sheets are correspondingly and electrically connected with the batteries, and the other ends of the acquisition connecting sheets are electrically connected with the acquisition structure;

the frame is arranged around the plurality of batteries in a surrounding mode, and the connecting position of the at least one collecting connecting piece and the batteries is lower than the top face of the frame along the first direction.

The utility model discloses battery device piles up along the first direction through setting up a plurality of batteries, increases battery device's energy density. Through setting up the battery and gathering the connection piece and be split type structure, correspond the electricity with a plurality of collection connection pieces and connect in a plurality of batteries, guarantee the connection reliability between battery and the collection connection piece. The collection structure is electrically connected with the collection connection pieces respectively, so that the collection structure collects a plurality of information of the battery, and the purpose of monitoring performance indexes such as the electric quantity of the battery is achieved.

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 diagram illustrating the construction of a battery device according to an exemplary embodiment;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

FIG. 3 is a schematic diagram illustrating the configuration of a battery cell within a battery receiving compartment of a battery device according to an exemplary embodiment;

fig. 4 is a partially enlarged schematic view of fig. 3.

The reference numerals are explained below:

1. a battery case; 2. a battery cell; 3. a low voltage signal acquisition component; 4. a conductive member;

11. a base plate; 12. a frame; 13. a battery housing compartment;

21. a battery; 211. a first side surface; 212. a second side surface; 213. a pole column;

31. collecting the structure; 32. collecting connecting sheets; 33. a conductive connection member; 34. and (4) an output end.

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 should 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 the context of a connection where an element or feature is referred to as being "on," "under," or "in" or "out" of another element, it can be directly on, not only "on," "under," or "in" or "out" of the other element, but may also be indirectly on "on," "under," or "in" or "out" of the other element via intervening elements.

The embodiment also provides a battery device which is assembled by adopting a battery device assembly method, as shown in fig. 1-3, the battery device comprises a plurality of batteries 21, a low-voltage signal acquisition assembly 3 and a frame 12, wherein the plurality of batteries 21 are stacked along a first direction. The low-voltage signal acquisition assembly 3 comprises an acquisition structure 31 and a plurality of acquisition connecting sheets 32, one ends of the acquisition connecting sheets 32 are correspondingly electrically connected with the batteries 21, and the other ends of the acquisition connecting sheets 32 are electrically connected with the acquisition structure 31. The frame 12 is disposed around the plurality of batteries 21, and the connection position of the at least one collecting connection piece 32 and the batteries 21 is lower than the top surface of the frame 12 along the first direction.

By providing a plurality of cells 21 stacked in the first direction, the energy density of the battery device is increased. Through setting up battery 21 and gathering connection piece 32 for split type structure, with a plurality of one ends of gathering connection piece 32 correspond the electricity and connect in a plurality of batteries 21, guarantee the connection reliability between battery 21 and the collection connection piece 32. The other ends of the collection connecting sheets 32 are respectively and electrically connected to the collection structure 31, so that the collection structure 31 collects information of the batteries 21, and the purpose of monitoring performance indexes such as electric quantity of the batteries 21 is achieved. The frame 12 surrounds the plurality of batteries 21, the frame 12 plays a role in protecting the side faces of the batteries 21, and the connecting position of the at least one collecting connecting piece 32 and the batteries 21 is lower than the top face of the frame 12 along the first direction, so that the frame 12 plays a role in protecting the connecting position.

It should be noted that the collecting connecting plate 32 may be directly electrically connected to the pole 213 of the battery 21, and the collecting connecting plate 32 may also be indirectly electrically connected to the pole 213 of the battery 21, for example, the collecting connecting plate 32 is electrically connected to the pole 213 of the battery 21 through a conductive strip.

It should be noted that the collecting structure 31 may be a flexible wire harness or a PCB.

Among them, a battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged.

In one embodiment, the batteries 21 are stacked batteries, which not only facilitate grouping, but also allow longer batteries 21 to be manufactured.

Specifically, electric core is lamination formula electric core, and electric core has first pole piece that stacks up each other, with first pole piece opposite electric property's second pole piece and the diaphragm of setting between first pole piece and second pole piece to make many to pile up and form lamination formula electric core to first pole piece and second pole piece.

Optionally, the battery 21 may be a winding battery, that is, a first pole piece, a second pole piece opposite to the first pole piece in electrical property, and a diaphragm sheet disposed between the first pole piece and the second pole piece are wound to obtain a winding battery core.

It should be particularly noted that, the battery 21 provided in this embodiment is specifically a rectangular battery, and the height direction of the battery 21 is defined, that is, the stacking direction of the plurality of batteries 21 is a first direction, the length direction of the batteries 21 is a second direction, and the width direction of the batteries 21 is a third direction, where the first direction, the second direction, and the third direction are perpendicular to each other two by two, and the first direction, the second direction, and the third direction only represent a spatial direction, and have no substantial meaning.

In one embodiment, the battery 21 has two oppositely disposed first sides 211 and four end-to-end second sides 212, the four second sides 212 are disposed between the two first sides 211, and the surface area of the first sides 211 is greater than the surface area of the second sides 212; wherein, collection structure 31 is disposed at first side 211 of battery 21 located at the uppermost end along the first direction and is stacked along the first direction to form battery unit 2, and two adjacent battery units 2 are connected through collection structure 31.

The shape of the battery 21 is similar to a rectangular parallelepiped structure, the two first side surfaces 211 and the four second side surfaces 212 which are connected end to end are arranged oppositely, the four second side surfaces 212 are arranged between the two first side surfaces 211, the two first side surfaces 211 and the four second side surfaces 212 form six surfaces of the rectangular parallelepiped structure, the surface area of the first side surface 211 is larger than that of the second side surface 212, and the first side surface 211 can also be called as a large surface.

Set up in the first side 211 that lies in along first direction battery 21 of the uppermost end through collection structure 31, first side 211 of battery 21 provides one for collection structure 31 and places the position, guarantee the support effect to collection structure 31, because the surface area of first side 211 is bigger, first side 211 provides great arrangement space for collection structure 31, and collection structure 31 sets up on the battery 21 of the uppermost end, be equivalent to collection structure 31 and adopt the mode that the top was drawn forth, even also can make things convenient for collection structure 31's winding displacement to arrange after battery 21 is gone into the case.

Specifically, two terminals 213 are respectively disposed at two ends of the battery 21, so that the distance between the two terminals 213 is relatively large, and the terminals 213 adopt a structure with two ends led out, thereby avoiding the occurrence of interference when the terminals 213 are installed. The collecting structure 31 is electrically connected to the post 213, and the collecting structure 31 can collect various performance indexes of the battery 21 through the post 213, so as to represent the actual use condition of the battery 21.

In one embodiment, as shown in fig. 3-4, two poles 213 are disposed on opposite sides of the first side 211, or two poles 213 are disposed on opposite sides of the second side 212.

Set up in first side 211 through utmost point post 213, utmost point post 213 sets up in the great face of surface area ratio promptly, and first side 211 is great for the position scope of setting that first utmost point post 213 provided, provides great installation space for the installation between utmost point post 213 and other conductive element, the installation of utmost point post 213 of being convenient for. Meanwhile, the two pole posts 213 are respectively arranged on two opposite sides of the first side surface 211, so that the distance between the two pole posts 213 is relatively large, and the interference of the pole posts 213 during installation is avoided.

The pole 213 is disposed on the second side surface 212, that is, the pole 213 is disposed on a narrow surface with a relatively small surface area, and whether the pole 213 is disposed on a large surface or a narrow surface is not limited in this embodiment, as long as the two ends of the pole 213 can be led out within the protection range of this embodiment.

It should be noted that the projections of the two poles 213 on the reference plane may coincide with each other, or the projections of the two poles 213 on the reference plane may not coincide, wherein the reference plane is parallel to the plane in which the first direction and the third direction are located. In other words, the two poles 213 may be disposed facing each other or may be staggered from each other, and the positions of the two poles 213 are not limited and may be adjusted according to actual production conditions.

In one embodiment, two collecting structures 31 are respectively disposed on two opposite sides of the first side surface 211, and two poles 213 of the same battery 21 are respectively connected to the two collecting structures 31.

When a plurality of batteries 21 are connected in series or in parallel, two poles 213 of the same battery 21 are respectively and correspondingly connected to the two acquisition structures 31, so that the two acquisition structures 31 can respectively acquire data on two sides of the battery 21, the independence is good, and the occurrence of mutual influence and interference is avoided.

In one embodiment, as shown in fig. 3-4, the low voltage signal acquisition assembly 3 further comprises an electrically conductive connector 33, and the plurality of acquisition connection pads 32 are electrically connected to the acquisition structure 31 through the electrically conductive connector 33.

Because a plurality of batteries 21 correspond and connect in a plurality of collection connection pieces 32, if gather connection piece 32 lug connection in collection structure 31, then need battery 21 after putting into battery box 1, need connect a plurality of collection connection pieces 32 in proper order in collection structure 31, but the space between battery box 1 and the battery 21 is less, and the degree of difficulty that leads to a plurality of collection connection pieces 32 and collection structure 31 to connect is bigger. Through connecting a plurality of collection connection pieces 32 electricity in electrically conductive connecting piece 33, electrically conductive connecting piece 33 plays a plurality of collection connection piece 32 integrated effect, realizes the function of gathering a plurality of collection connection pieces 32. The acquisition connecting sheet 32 is electrically connected with the acquisition structure 31 through the conductive connecting piece 33, the conductive connecting piece 33 plays a role in intermediate connection, and the acquisition structure 31 can be connected with a plurality of acquisition connecting sheets 32 only by being connected with the conductive connecting piece 33 serving as a main support structure, so that the process is simplified, and the production cost is reduced.

In addition, because there is certain distance between utmost point post 213 and the collection structure 31, lie in between utmost point post 213 and the collection structure 31 through gathering the connection piece 32, gather the effect that connection piece 32 played intermediate junction to carry out electric connection with gathering structure 31 and utmost point post 213, guarantee the reliability of being connected between utmost point post 213 and the collection structure 31.

In one embodiment, the poles 213 of two adjacent cells 21 are connected by a pick connector 32, and the pick structure 31 is electrically connected to the pick connector 32. Wherein the collecting connecting piece 32 is a nickel piece.

After a plurality of batteries 21 accomplish to pile up along the first direction, utilize and gather connection piece 32 and realize the electric connection of utmost point post 213 among two adjacent batteries 21, realize the electric connection between a plurality of batteries 21, utilize the electricity of collection structure 31 to connect in gathering connection piece 32, accomplish the process that collection structure 31 gathered the battery 21 signal through gathering connection piece 32, gather connection piece 32 when realizing electric connection between the utmost point post 213 of a plurality of batteries 21, still be used for the electric connection with collection structure 31, it is multi-purpose to gather connection piece 32, and the functional ratio is stronger.

It should be noted that, if the terminal 213 is disposed on the edge of the second side 212 or the first side 211, the collecting connecting piece 32 is a strip structure, the collecting connecting piece 32 extends along the first direction, and the collecting connecting piece 32 can be sequentially connected to a plurality of terminals 213 stacked along the first direction for disposing the battery 21.

Because the pole 213 of the battery 21 may not protrude from the second side surface 212, but the pole 213 is disposed at the edge of the first side surface 211, which is equivalent to the pole 213 being recessed between two adjacent batteries 21, if the collecting connecting sheet 32 is connected to the pole 213 and the collecting structure 31, the two ends of the collecting connecting sheet 32 are precisely positioned relatively high, and the collecting connecting sheet 32 has a relatively long length along the first direction, which is easy to break.

For this reason, the collection connection piece 32 and the electrically conductive connecting piece 33 that this embodiment provided constitute jointly and gather the end, gather connection piece 32 and electrically conductive connecting piece 33 and be split type structure, gather connection piece 32 and electrically conductive connecting piece 33's size smaller, the control of error when being convenient for produce and process, and gather connection piece 32 and electrically conductive connecting piece 33 and can install in proper order, avoid appearing the condition of rupture because of length is longer. The collecting connecting sheet 32 is electrically connected with the pole 213 of the battery 21, the collecting connecting sheet 32 realizes that the current of the pole 213 in the battery 21 is led out, the collecting connecting sheet 32 is electrically connected with the flexible branch circuit through the conductive connecting piece 33, and the conductive connecting piece 33 plays a role in switching between the collecting connecting sheet 32 and the collecting structure 31.

In one embodiment, the number of the collection tabs 32 is plural, and one end of the plural collection tabs 32 is electrically connected to the terminal 213 of the plural batteries 21 and the other end is electrically connected to the conductive connector 33.

The quantity of gathering connection piece 32 is corresponding with the quantity of battery 21, and one end electricity through a plurality of collection connection piece 32 corresponds electric connection in the utmost point post 213 of a plurality of batteries 21, and every gathers connection piece 32 and corresponds utmost point post 213 of a battery 21, guarantees the independence of the utmost point post 213 information gathering of a plurality of batteries 21, avoids appearing signal interference's the condition, and an utmost point post 213 of every battery 21 forms a branch road rather than corresponding collection connection piece 32. The other end through a plurality of collection connection pieces 32 electricity is connected in electrically conductive connecting piece 33, is equivalent to electrically conductive connecting piece 33 and integrates a plurality of branches, plays the effect that the signal of telecommunication was summarized.

In one embodiment, the conductive connection 33 is connected to the acquisition structure 31 by a fixation structure. By utilizing the fixing structure, the fixing between the conductive connecting piece 33 and the acquisition structure 31 is realized, and the reliability of the connection between the conductive connecting piece and the acquisition structure is ensured.

It can be understood that the fixing structure may be any one of a plug-in structure, an interference structure and a welding structure, which represents different fixing manners, and the specific form of the fixing structure is not limited in this embodiment, and may be adjusted according to actual production needs.

It can be understood that the fixing structure is covered with an insulating layer, and the insulating layer plays a role of isolating the conductive connecting member 33 from the collecting structure 31, so that an insulating effect is ensured.

In one embodiment, the conductive connectors 33 corresponding to the plurality of acquisition connectors 32 are integrally formed, or the conductive connectors 33 corresponding to the plurality of acquisition connectors 32 are separately formed.

In one embodiment, the conductive connectors 33 corresponding to the plurality of acquisition connectors 32 are integrally formed, or the conductive connectors 33 corresponding to the plurality of acquisition connectors 32 are separately formed.

If the conductive connecting members 33 corresponding to the plurality of collecting connecting pieces 32 are of a split structure, the number of the conductive connecting members 33 is also multiple, one end of each collecting connecting piece 32 is correspondingly electrically connected to one pole 213 of the battery 21, and the other end of each collecting connecting piece 32 is correspondingly electrically connected to one conductive connecting member 33. At this time, the end of the conductive connecting member 33 not connected to the collecting connecting piece 32 is electrically connected to the collecting structure 31, which is equivalent to collecting signals at the position of the collecting structure 31.

If the conductive connecting members 33 corresponding to the plurality of collecting connecting pieces 32 are of an integrally formed structure, the number of the conductive connecting members 33 is one, one end of each collecting connecting piece 32 is correspondingly electrically connected to one pole 213 of the battery 21, and the other end of each collecting connecting piece 32 is correspondingly electrically connected to the same conductive connecting member 33, that is, the plurality of collecting connecting pieces 32 share the same conductive connecting member 33, which is equivalent to realizing signal summarization at the position of the conductive connecting member 33.

In one embodiment, the conductive connector 33 is any one of a PCB, an FPC, and an FFC.

If the conductive connection 33 is directly a structure resembling a monolithic PCB, which may also be called a printed circuit board or PCB, the PCB may serve as a support for the acquisition connector 32 and as a carrier for the electrical interconnection of the acquisition connector 32 and the acquisition structure 31.

If the conductive connection member 33 is FPC or FFC, a plurality of branches are merged into a structure of a main path. Specifically, FPC or FFC can be the wire, the wire includes crust and cable, the cable sets up in the crust, the crust plays the effect of protection cable, at initial state, can think that the length of cable and crust is unanimous, when needs electric connection, the both ends of cable are total end and branch end respectively, the total end direct electricity of cable is connected in collection structure 31, will be located the branch of cable and hold outside crust and peel off, make the cable branch end be in the exposed state for external environment, each branch road that the cable was held at this moment is in the dispersed state, be convenient for each branch road correspond the utmost point post 213 of electricity connection in each battery 21.

In one embodiment, the low voltage signal acquisition assembly 3 further comprises an output terminal 34, the output terminal 34 being electrically connected to the acquisition structure 31. The output end 34 serves as an output end of the acquisition structure 31, and the output end 34 may be connected to other electric devices for monitoring the index parameter, so as to transmit a signal of the battery 21.

It is understood that the output end 34 may be disposed at a position opposite to one of the battery units 2, or the output end 34 may be disposed at an outer side of the battery unit 2, that is, for one of the battery accommodating chambers 13, the output end 34 is disposed at an end of the battery accommodating chamber 13 along the third direction, so as to avoid the battery unit 2 interfering with the same.

In one embodiment, the battery device further includes a battery case 1, the battery case 1 including a bottom plate 11, a plurality of batteries 21 stacked in a first direction on the bottom plate 11; wherein the first direction is arranged perpendicular to the base plate 11.

Through a plurality of batteries 21 along first direction stack set up in bottom plate 11, bottom plate 11 plays the effect of bearing a plurality of batteries 21, and the supporting effect is good, and a plurality of batteries 21 superpose from top to bottom along first direction and set up on bottom plate 11, borrows high space, saves area.

In one embodiment, the battery device is a battery module including a plurality of batteries 21, and the battery module may further include end plates and side plates for fixing the plurality of batteries 21. A buffer pad may be disposed between the adjacent batteries 21, and a buffer pad may be disposed between the end plate and the battery 21.

In one embodiment, the battery device is a battery pack. The battery case 1 protects the battery 21 by providing the battery 21 in the battery case 1.

When the number of the cells 21 is plural, the plural cells 21 may be arranged in the stacking direction of the cells 21 to form a group of cells 21 and then the plural cells 21 may be fixed by end plates and side plates in the cell case 1. When a plurality of cells 21 are directly provided in the cell case 1, i.e., without grouping the plurality of cells 21, the end plates and the side plates may be eliminated.

An embodiment of the utility model provides a battery device assembly method, this battery device assembly method includes following step: stacking a plurality of cells 21 in a first direction; a plurality of collecting connecting sheets 32 are correspondingly and electrically connected with the plurality of batteries 21; after the plurality of batteries 21 and the plurality of collecting connecting pieces 32 are collectively placed in the battery box body 1, the plurality of collecting connecting pieces 32 are electrically connected to the collecting structure 31, respectively, so that the collecting structure 31 collects information of the plurality of batteries 21.

The battery device assembly method provided by the present embodiment increases the energy density of the battery device by arranging a plurality of cells 21 stacked in the first direction. If the battery 21 is welded to the collecting tab 32 after the battery 21 is placed in the battery case 1, the space between the battery 21 and the battery case 1 is relatively narrow, and a sufficient space cannot be provided for a connecting tool such as a welding gun, which causes a problem of difficulty in welding and affects the reliability of connection between the battery 21 and the collecting tab 32. By correspondingly and electrically connecting the plurality of collecting connecting sheets 32 to the plurality of batteries 21 before the batteries 21 are placed in the battery box body 1, the problem that an installation space cannot be provided for a welding gun between the batteries 21 and the battery box body 1 is solved, and the connection reliability between the batteries 21 and the collecting connecting sheets 32 is improved. After a plurality of batteries 21 and a plurality of acquisition connecting sheets 32 are placed in the battery box body 1 together, the acquisition connecting sheets 32 are electrically connected with the acquisition structures 31 respectively, and because the acquisition connecting sheets 32 are connected with the batteries 21 before the batteries are placed in the battery box body 1, after the batteries 21 are placed in the battery box body 1, only the acquisition connecting sheets 32 are connected with the acquisition structures 31, so that the whole process operation is performed after the batteries 21 are placed in the battery box body 1. Through connecting a plurality of collection connection pieces 32 in collection structure 31 respectively electricity, make collection structure 31 gather the information of a plurality of batteries 21 to reach the purpose to performance index monitoring such as the electric quantity of battery 21.

It is understood that the connection position of at least one collection tab 32 and battery 21 is lower than the top surface of frame 12 along the first direction, and in this case, frame 12 interferes with the connection position of collection tab 32 and battery 21 if collection tab 32 and battery 21 are not electrically connected before being placed in battery box 1, but are electrically connected with collection tab 32 only after battery 21 is placed in battery box 1.

In one embodiment, the battery device assembling method further includes: before the plurality of collecting connection pieces 32 are electrically connected to the plurality of batteries 21, the plurality of collecting connection pieces 32 are electrically connected to the conductive connecting member 33, so that the collecting connection pieces 32 are electrically connected to the collecting structure 31 through the conductive connecting member 33.

Because a plurality of batteries 21 correspond to connect in a plurality of collection connection pieces 32, if gather connection piece 32 lug connection in collection structure 31, then need battery 21 after putting into battery box 1, need connect in proper order a plurality of collection connection pieces 32 in collection structure 31, but the space between battery box 1 and the battery 21 is less, and the difficulty that leads to a plurality of collection connection pieces 32 and collection structure 31 to be connected is bigger. Through connecting a plurality of collection connection pieces 32 electricity in electrically conductive connecting piece 33, electrically conductive connecting piece 33 plays the effect integrated to a plurality of collection connection pieces 32, realizes the function of gathering a plurality of collection connection pieces 32. The acquisition connecting sheet 32 is electrically connected with the acquisition structure 31 through the conductive connecting piece 33, the conductive connecting piece 33 plays a role in intermediate connection, and the acquisition structure 31 can be connected with a plurality of acquisition connecting sheets 32 only by being connected with the conductive connecting piece 33 serving as a main support structure, so that the process is simplified, and the production cost is reduced. Meanwhile, because the connection between the plurality of collecting connecting pieces 32 and the conductive connecting pieces 33 is before the battery 21 is placed in the battery box body 1, at this time, the connection between the collecting connecting pieces 32 and the conductive connecting pieces 33 is not limited by the space of the battery box body 1, the operation is relatively easy, and the reliability of the connection between the collecting connecting pieces 32 and the conductive connecting pieces 33 is relatively good.

In one embodiment, the conductive connection 33 extends along a first direction, and the harvesting structure 31 is disposed on top of the battery 21 along the first direction.

Set up along the first direction extension through setting up electrically conductive connecting piece 33, electrically conductive connecting piece 33 is equivalent to setting up in the side of battery 21, sets up in the top of battery 21 along the first direction through setting up collection structure 31, and collection structure 31 is equivalent to ejecting structure promptly, and the top surface that directly leads to battery 21 along the side of battery 21 is convenient for electrically conductive connecting piece 33, makes things convenient for the connection between electrically conductive connecting piece 33 and the collection structure 31. Meanwhile, if collection structure 31 sets up in the bottom and the middle part of battery 21 along first direction, collection structure 31 may pass the middle beam of battery box 1 when the installation, need set up the through-hole that is used for collection structure 31 to wear to establish on the middle beam in advance this moment, when increasing production and processing cost, still can reduce the structural strength of middle beam, set up in the top surface of battery 21 along first direction through collection structure 31, collection structure 31's installation need not receive the influence of middle beam in the battery box 1, need not to reform transform the middle beam, in structure manufacturing cost, guarantee the structural strength of middle beam.

In one embodiment, the conductive connection 33 is connected to the acquisition structure 31 by a fixation structure. By utilizing the fixing structure, the fixing between the conductive connecting piece 33 and the acquisition structure 31 is realized, and the reliability of the connection between the conductive connecting piece and the acquisition structure is ensured.

It can be understood that the fixing structure may be any one of a plug-in structure, an interference structure and a welding structure, which represents different fixing manners, and the specific form of the fixing structure is not limited in this embodiment, and may be adjusted according to actual production needs.

In one embodiment, after electrically connecting a plurality of acquisition connection pads 32 to acquisition structure 31, respectively, output terminals 34 are electrically connected to acquisition structure 31; alternatively, output terminal 34 is electrically connected to acquisition structure 31 before a plurality of acquisition connecting pieces 32 are electrically connected to acquisition structure 31, respectively.

Specifically, the free end of the acquisition structure 31 and the output end 34 may be soldered after a plurality of acquisition connection pads 32 are electrically connected to the acquisition structure 31, respectively. Since the harvesting structure 31 is positioned at the top of the battery 21 in the first direction, the connection between the harvesting structure 31 and the output end 34 is not affected.

Specifically, can connect output 34 electricity in collection structure 31 before a plurality of collection connection pieces 32 electricity respectively connect in collection structure 31, when collection structure 31 connects in collection connection piece 32, be equivalent to collection structure 31 and already take output 34 certainly, reduce the connection degree of difficulty that collection structure 31 and output 34 connect.

In one embodiment, a plurality of batteries 21 are stacked in a first direction to form a battery unit 2, and after the plurality of battery units 2 are respectively placed in a battery box 1, collection structures 31 are respectively electrically connected to a plurality of collection connecting sheets 32 corresponding to the plurality of battery units 2.

If the number of the battery units 2 is one, the collecting structure 31 serves as an outlet of the battery unit 2 for collecting information of each battery 21 in the whole battery unit 2. If the quantity of battery unit 2 is a plurality of, a plurality of battery units 2 are arranged according to certain law, through with gather structure 31 electricity respectively connect in a plurality of collection connection pieces 32 that a plurality of battery units 2 correspond, utilize one to gather structure 31 and just can realize the connection of a plurality of battery units 2, be equivalent to the same collection structure 31 of a plurality of battery unit 2 sharing this moment, it is monolithic structure to gather structure 31, the time that needs interconnect between the collection structure 31 of the split type structure of saving multistage, save battery device's assembly cost.

If the quantity of battery unit 2 is a plurality of, be connected through gathering structure 31 between two adjacent battery unit 2, gather the effect that structure 31 played two adjacent battery unit 2 cross-overs, make gather structure 31 can correspond the electricity and connect in a plurality of battery unit 2 to carry out signal acquisition to the battery 21 of a plurality of battery unit 2, gather structure 31's functional ratio stronger.

It is understood that if a plurality of battery units 2 are arranged in sequence along the third direction, the collecting structure 31 extends along the third direction; if a plurality of battery cells 2 are sequentially arranged in the second direction, the collecting structure 31 extends in the second direction.

It can be understood that the collecting structures 31 may be a split structure, a plurality of collecting structures 31 are correspondingly connected to a plurality of battery units 2, and two adjacent collecting structures 31 are electrically connected to each other; the collecting structure 31 may also be an integrally formed structure, and one collecting structure 31 is correspondingly electrically connected to a plurality of battery units 2, that is, a plurality of battery units 2 share the same collecting structure 31.

It should be noted that, a frame 12 and a partition beam (as shown in fig. 1 and fig. 2) are disposed in the battery case 1 of the battery device, the frame 12 is disposed on the bottom plate 11, and the frame 12 surrounds the battery unit 2 to serve as a side protection. The partition roof beam sets up on bottom plate 11 and sets up in the inside of frame 12, and the partition roof beam separates into a plurality of batteries with battery box 1's cavity and holds storehouse 13, and every battery holds storehouse 13 and is used for holding a plurality of battery unit 2, and the collection structure 31 that every battery holds storehouse 13 and corresponds is the integrated into one piece structure, and the collection structure 31 that different batteries hold storehouse 13 and correspond is split type structure.

It can be understood that the widths of the conductive connecting members 33 along the third direction corresponding to different battery units 2 may be the same or different, and if the number of the conductive connecting members 33 electrically connected to the collecting connecting sheets 32 is smaller, the width of the conductive connecting members 33 along the third direction is smaller; if the number of the conductive connecting members 33 electrically connected to the collecting connecting pads 32 is large, the width of the conductive connecting members 33 in the third direction is large.

It can be understood that, for each battery unit 2, after the connecting plates of the plurality of batteries 21 are respectively connected to the lateral surfaces of the plurality of batteries 21 in the first direction, the connecting plates are connected to the top of the battery unit 2 by using the collecting connectors, and then the plurality of battery units 2 are connected by using the collecting structures 31 on the top of the battery unit 2, so as to realize the function of collecting in series.

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 (10)

1. A battery device, comprising:

a plurality of batteries (21), wherein the batteries (21) are stacked along a first direction;

the low-voltage signal acquisition assembly (3) comprises an acquisition structure (31) and a plurality of acquisition connecting sheets (32), one ends of the acquisition connecting sheets (32) are correspondingly and electrically connected to the batteries (21), and the other ends of the acquisition connecting sheets (32) are electrically connected to the acquisition structure (31);

the frame (12) is arranged around the batteries (21), and the connecting position of at least one collecting connecting piece (32) and the batteries (21) is lower than the top surface of the frame (12) along the first direction.

2. The battery device according to claim 1, characterized in that the low voltage signal acquisition assembly (3) further comprises an electrically conductive connection member (33), and the plurality of acquisition connection pads (32) are electrically connected to the acquisition structure (31) through the electrically conductive connection member (33).

3. The battery device according to claim 2, characterized in that the conductive connection (33) is connected to the acquisition structure (31) by a fixing structure.

4. The battery device according to claim 3, wherein the fixing structure is any one of a plug-in structure, an interference structure and a welding structure.

5. The battery device according to claim 2, wherein the conductive connecting member (33) corresponding to the plurality of collecting connection pieces (32) is of an integrally molded structure, or the conductive connecting member (33) corresponding to the plurality of collecting connection pieces (32) is of a split structure.

6. The battery device according to claim 1, wherein the battery (21) has two oppositely disposed first sides (211) and four end-to-end second sides (212), the four second sides (212) being disposed between the two first sides (211), the first sides (211) having a surface area greater than the surface area of the second sides (212);

the collecting structure (31) is arranged on the first side surface (211) of the battery (21) located at the uppermost end in the first direction, the first side surface is stacked along the first direction to form battery units (2), and every two adjacent battery units (2) are connected through the collecting structure (31).

7. Battery device according to any of claims 1 to 6, characterized in that said low voltage signal acquisition assembly (3) further comprises an output (34), said output (34) being electrically connected to said acquisition structure (31).

8. The battery device according to any one of claims 1 to 6, further comprising a battery case (1), wherein the battery case (1) comprises a bottom plate (11), and a plurality of the batteries (21) are stacked in the first direction on the bottom plate (11);

wherein the first direction is arranged perpendicular to the base plate (11).

9. The battery device according to any of claims 1-6, characterized in that the collecting structure (31) is a flexible harness or a PCB board.

10. The battery device according to claim 4, wherein an insulating layer is coated outside the fixing structure.

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