CN215816028U - Stackable shell, battery module and soft-package battery module - Google Patents

Abstract

The utility model relates to the technical field of batteries and discloses a stackable shell. The stackable shell comprises a plurality of shells, each shell comprises two heat dissipation pieces with concave structures and an enclosing frame, fixing protrusions are arranged on the inner sides of two opposite side walls of each heat dissipation piece, fixing grooves are formed in the enclosing frames, and when the fixing protrusions are clamped in the fixing grooves, the heat dissipation pieces and the enclosing frames can be fixedly connected to form the shell with an accommodating cavity. And enclose still be provided with along the assembly hasp and the assembly spout that same direction extension set up on the frame, through the cooperation of the assembly hasp of a frame and the assembly spout of another frame of enclosing to this realizes a plurality of relatively fixed of enclosing frame or casing. The utility model also provides a battery module which comprises the battery and the stackable shell, wherein the battery is placed in the accommodating cavity, and then the shell is stacked, so that the assembly of the battery module can be completed, and the battery module is efficient and convenient. The utility model further provides a soft package battery module which is stable in installation and reliable in connection.

Description

Stackable shell, battery module and soft-package battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a stackable shell, a battery module and a soft-package battery module.

Background

The pouch battery is widely used in the field of new energy electric vehicles in recent years due to advantages of high safety, light weight, large capacity, small internal resistance, and the like, but since the pouch battery is mounted in a vehicle, if the vehicle jolts violently during operation, external vibration easily causes unstable operation.

And adopt the naked mode of piling up of battery in the battery of current laminate polymer power battery module piles up the process, easily causes the battery to pile up the plane degree and the eccentric tolerance of battery utmost point ear is big partially, further can cause the perforation difficulty of battery utmost point ear, finally leads to laminate polymer power battery module to be in groups inefficiency. Meanwhile, the battery stacking mode adopted by the current soft package power battery module is poor in heat dissipation effect, the power battery module is forced to work in a high-temperature environment for a long time, and then the battery is caused to have corresponding faults, namely the stability of the electrical performance of the module and the safety of the module can not be guaranteed, and the normal running of a vehicle is finally influenced.

Therefore, a stackable casing, a battery module and a pouch battery module are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stackable shell, which can realize the stacking arrangement among a plurality of shells without other mechanical connecting pieces, and has simple assembly, convenience and high efficiency.

Another object of the present invention is to provide a battery module, which can be used for assembling a pouch battery to improve the assembly efficiency and accuracy thereof, and ensure good heat dissipation performance.

Another object of the present invention is to provide a pouch battery module, which improves the assembly efficiency and the heat dissipation, and further improves the safety and the service life of the pouch battery module.

As the conception, the technical scheme adopted by the utility model is as follows:

a stackable housing comprising a plurality of housings, each of the housings comprising:

two heat dissipation pieces are arranged, each heat dissipation piece is of a concave structure, and fixing protrusions are arranged on the inner sides of two opposite side walls of each concave structure;

the heat dissipation device comprises an enclosure frame, a heat dissipation piece and a heat dissipation piece, wherein a plurality of fixing grooves are formed in the enclosure frame, and fixing protrusions can be clamped in the fixing grooves, so that the enclosure frame and the two heat dissipation pieces are connected to form a shell with an accommodating cavity, and the accommodating cavity can accommodate a battery;

enclose still be provided with a plurality of assembly portions on the frame, every assembly portion all includes along the assembly lock that same direction extension set up colludes and assembly spout, one enclose the frame assembly lock colludes can through another enclose the frame assembly spout is fixed in another enclose the frame, so that it is a plurality of enclose the frame or the casing piles up the setting.

Furthermore, the assembly lock hook and the assembly sliding groove are arranged at the corner of the enclosing frame and extend along the plane where the enclosing frame is perpendicular to.

Furthermore, the enclosure frame is also provided with a heat dissipation groove and a reinforcing rib.

Further, the enclosing frame comprises two frames and two bus pieces, the frames and the bus pieces are sequentially connected at intervals, when the accommodating cavity is used for accommodating a battery, the frames are configured to be connected with a battery core of the battery, and the bus pieces are configured to be electrically connected with tabs of the battery.

Furthermore, a positioning hole is formed in the confluence sheet, a positioning column is arranged on the frame, and the confluence sheet and the frame are connected with the positioning column through the positioning hole.

A battery module comprising a battery and the stackable housing as described in any one of the above, the battery disposed within the receiving cavity, the battery module being provided in plurality, the plurality of battery modules being stacked.

Further, the battery module still includes the bolster, every the battery module includes two the battery, the bolster clamp is located two between the battery and be located in the casing.

Further, the battery comprises a battery core and a tab, the surrounding frame comprises a frame and a confluence sheet, the battery core is bonded and fixed on the frame, and the tab is welded and fixed on the confluence sheet.

Further, a limiting protrusion is arranged on the heat dissipation part and configured to abut against the side edge of the battery core.

A laminate polymer battery module comprises the battery module.

The utility model has the beneficial effects that:

the stackable shell comprises a plurality of shells, and each shell comprises two heat dissipation pieces and a surrounding frame. The heat dissipation piece is a concave structure, the two concave structures are oppositely arranged on two sides of the enclosing frame to form a shell with an accommodating cavity, and the shell can be used for accommodating a battery. The heat dissipation part and the surrounding frame are fixedly connected by mainly utilizing the fixing protrusions arranged on the inner sides of two opposite side walls of the concave structure and the plurality of fixing grooves arranged on the surrounding frame, and during assembly, the fixing protrusions can be clamped in the fixing grooves and are in interference fit with each other, so that the heat dissipation part and the surrounding frame are tightly connected. Further, enclose still to be provided with assembly portion on the frame, and assembly portion's effect then lets a plurality of frames or a plurality of casings of enclosing can pile together, specifically relies on assembly trip and the assembly spout that sets up of extending along same direction in the assembly portion, during the equipment, need enclose the assembly trip of frame through another assembly spout that encloses the frame with another and enclose the frame fixed to this realizes a plurality of relatively fixed of enclosing frame or casing.

The battery module provided by the utility model comprises the battery and the stackable shell, wherein the battery is arranged in the accommodating cavity of the shell, and the shell can facilitate the assembly of the battery module, so that the stable work of the battery is ensured, and meanwhile, the assembly efficiency and the assembly precision are improved.

According to the soft package battery module, the battery module is adopted, so that the installation stability of the soft package battery module can be improved, the heat dissipation efficiency of the soft package battery module can be improved, and the safety and the service life of the soft package battery module are improved.

Drawings

FIG. 1 is an exploded view of a stackable housing provided by an embodiment of the present invention;

fig. 2 is an assembly view of a battery module according to an embodiment of the present invention;

fig. 3 is an exploded view of a battery module according to an embodiment of the present invention.

In the figure:

1. a heat sink; 11. a fixed protrusion;

2. enclosing a frame; 21. a frame; 211. fixing the groove; 212. assembling a lock hook; 213. assembling a chute; 214. a heat sink; 215. reinforcing ribs; 22. a confluence sheet;

3. a battery;

4. a buffer.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment provides a stackable casing, which comprises a plurality of casings, wherein the plurality of casings can be stacked without other mechanical connecting pieces. Wherein, each casing all includes two radiating pieces 1 and one and encloses frame 2, and two radiating pieces 1 are located the both sides of enclosing frame 2 thickness direction respectively and set up relatively to enclose frame 2 fixed connection to form the casing that has the chamber of holding, and this casing can be used for holding battery 3 etc. and have the product that the setting of piling up required.

As shown in fig. 1, the heat sink 1 is a concave structure, and the inner sides of two opposite side walls of the concave structure are both provided with fixing protrusions 11, and a fixing groove 211 is provided on the surrounding frame 2 at a position corresponding to the fixing protrusions 11, so that when the heat sink 1 is connected with the surrounding frame 2, the fixing protrusions 11 of the heat sink 1 need to be clamped in the fixing grooves 211 of the surrounding frame 2. In addition, in order to ensure the stable connection of the heat sink 1 and the surrounding frame 2, the fixing grooves 211 oppositely arranged on the heat sink 1 may be provided with a plurality of pairs, and because two heat sinks 1 are required to surround one shell, it can be known that the fixing grooves 211 should also be provided with at least two parallel rows.

In addition to the above arrangement, stacking between a plurality of cases is achieved. As shown in fig. 1, the enclosure frame 2 is further provided with a plurality of assembling portions, each of which includes an assembling locking hook 212 and an assembling sliding groove 213 extending in the same direction, and during assembling, it is necessary that the assembling portion of one enclosure frame 2 is matched with the assembling portion of another enclosure frame 2. Specifically, the assembly lock hook 212 of one enclosure frame 2 slides through the assembly sliding groove 213 of the other enclosure frame 2, and the assembly lock hook 212 is clamped on the assembly sliding groove 213 by interference fit, and the clamping end of the assembly lock hook 212 of one enclosure frame 2 is located in the gap between the assembly lock hook 212 of the other enclosure frame 2 and the assembly sliding groove 213.

As can be seen from fig. 1, since the heat sink 1 needs to be covered on the surrounding frame 2, in order to avoid further processing of the heat sink 1, for example, an avoiding hole is formed on the heat sink 1 to avoid the assembly lock hook 212. In this embodiment, the assembly lock hook 212 and the assembly sliding groove 213 are disposed at the corner of the enclosure frame 2, and for the convenience of assembly, the assembly lock hook 212 and the assembly sliding groove 213 are disposed along the plane perpendicular to the enclosure frame 2. It can be known that the stacking direction of the surrounding frame 2 should be the direction perpendicular to the plane of the surrounding frame 2, so that the assembling part is extended along the direction, which is more convenient for the assembling of the staff.

In addition, the enclosure frame 2 is further provided with a heat dissipation groove 214, which not only ensures the heat dissipation of the product in the casing, but also ensures the installation of the assembly lock hook 212. Optionally, the heat dissipation groove 214 extends along a plane parallel to the surrounding frame 2, and is partially disposed between the assembly lock hook 212 and the assembly sliding groove 213, so that when the assembly lock hook 212 and the assembly sliding groove 213 are engaged, the hook end of the assembly lock hook 212 can be located in the heat dissipation groove 214. Certainly, in order to avoid the influence of the heat dissipation grooves 214 on the stability of the enclosure frame 2, the enclosure frame 2 is further provided with reinforcing ribs 215.

In this embodiment, enclose frame 2 and include two frames 21 and two conflux pieces 22, wherein frame 21 and conflux piece 22 are connected at interval in proper order, can know, laminate polymer battery 3's electric core is the rectangle, consequently when holding the chamber and being used for holding this battery 3, then enclose frame 2 should be for the rectangle frame with battery 3 size assorted, and battery 3 is provided with the both ends of utmost point ear respectively the butt in conflux piece 22, in order to realize holding battery 3 and the outside electricity of intracavity and be connected, and frame 21 is then used for being connected with battery 3's electric core, specifically, can adopt the mode of bonding in order to fix electric core.

Optionally, a positioning hole is formed in the bus sheet 22, a positioning column is arranged on the frame 21, and the bus sheet 22 and the frame 21 are connected with the positioning column through the positioning hole, so that the mounting precision is improved. Optionally, the bus bar 22 is connected with the frame 21 in an injection molding mode, so that the processing is convenient, and the connection is reliable.

The present embodiment also provides a battery module including a battery 3 and a stackable housing as described above, wherein the battery 3 is disposed within the receiving cavity. As shown in fig. 2, when there are a plurality of battery modules, the stackable housings may be used to stack the plurality of battery modules, and the stacking method of the plurality of battery modules is the same as the stacking method of the plurality of housings, which is not described herein again.

As shown in fig. 3, two batteries 3 are placed in each case, and thus the battery module further includes a buffer member 4 interposed between the two batteries 3. Optionally, the buffer member 4 is made of foam, and is used for buffering between two adjacent batteries 3 to avoid mutual collision, and the battery core of two adjacent batteries 3 is bonded to the buffer member 4, so that the installation stability and the connection reliability between two adjacent batteries 3 can be further improved.

Optionally, for guaranteeing the firm setting of battery 3 in holding the intracavity, be provided with spacing arch on the radiating piece 1, wherein spacing arch sets up in the bottom of concave type structure and is close to one side of inside wall, and this spacing arch extends the setting in the length direction of radiating piece, cooperatees with the side of electric core, can restrict the removal of electric core on the width direction of radiating piece, makes things convenient for electric core to set up on predetermineeing the mounted position.

Specifically, can be connected with two electric cores respectively with radiating piece 1 earlier when the assembly, then connect through bolster 4 and form combination electric core, later with this combination electric core with enclose frame 2 assembly again, wherein the structure is glued can be paintd to the side of electric core or the inboard of frame 21 to make electric core and frame 21 bond fixedly, and the inside wall of radiating piece 1 and the lateral wall joint of frame 21, utmost point ear and busbar 22 welded fastening.

The embodiment also provides a laminate polymer battery module, including as above battery module. Through adopting foretell battery module, can improve the steadiness of laminate polymer battery module installation, can also improve the radiating efficiency of laminate polymer battery module, improve the security and the life of laminate polymer battery module then.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. A stackable housing comprising a plurality of housings, each of the housings comprising:

two heat dissipation pieces (1) are arranged, each heat dissipation piece (1) is of a concave structure, and fixing protrusions (11) are arranged on the inner sides of two opposite side walls of each concave structure;

the heat dissipation device comprises an enclosing frame (2), wherein a plurality of fixing grooves (211) are formed in the enclosing frame (2), and fixing protrusions (11) can be clamped in the fixing grooves (211), so that the enclosing frame (2) is connected with two heat dissipation members (1) to form a shell with an accommodating cavity, and the accommodating cavity can accommodate a battery (3);

enclose still be provided with a plurality of assembly portions on frame (2), every assembly portion all includes along same direction extension assembly hasp (212) and assembly spout (213) that set up, one enclose frame (2) assembly hasp (212) can pass through another enclose frame (2) assembly spout (213) are fixed in another enclose frame (2), so that it is a plurality of enclose frame (2) or the casing piles up the setting.

2. Stackable housing according to claim 1, characterized in that the assembly catches (212) and the assembly runners (213) are provided at the corners of the surrounding frame (2) and extend in a plane perpendicular to the plane of the surrounding frame (2).

3. Stackable casing according to claim 1, characterized in that the surrounding frame (2) is further provided with heat dissipation slots (214) and reinforcing ribs (215).

4. Stackable casing according to claim 1, characterized in that the enclosure (2) comprises two rims (21) and two bus bars (22), the rims (21) and the bus bars (22) being connected in series at a distance, the rims (21) being configured to connect the cells of the battery (3) when the housing cavity is used to house a battery (3), the bus bars (22) being configured to electrically connect the tabs of the battery (3).

5. Stackable casing according to claim 4, wherein the bus bar (22) is provided with positioning holes and the rim (21) is provided with positioning posts, the bus bar (22) and the rim (21) being connected to the positioning posts through the positioning holes.

6. A battery module comprising a battery (3) and a stackable casing as defined in any one of claims 1 to 5, said battery (3) being arranged in said housing cavity, said battery module being provided in plurality, a plurality of said battery modules being arranged in a stack.

7. The battery module according to claim 6, further comprising a buffer member (4), wherein each battery module comprises two batteries (3), and the buffer member (4) is sandwiched between the two batteries (3) and located in the housing.

8. The battery module according to claim 6, wherein the battery (3) comprises a cell and a tab, the enclosure frame (2) comprises a frame (21) and a bus bar (22), the cell is adhesively fixed to the frame (21), and the tab is welded to the bus bar (22).

9. The battery module according to claim 8, wherein the heat sink (1) is provided with a limiting protrusion configured to abut against a side edge of the battery cell.

10. A pouch battery module, comprising the battery module according to any one of claims 6 to 9.

Images