CN212907963U

CN212907963U - Non-modular battery pack and power supply device

Info

Publication number: CN212907963U
Application number: CN202021746519.1U
Authority: CN
Inventors: 李响; 李德连; 汪浩
Original assignee: Sinoev Hefei Technologies Co Ltd
Current assignee: Sinoev Hefei Technologies Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-04-06
Anticipated expiration: 2030-08-19

Abstract

The application provides a no modularization battery package and power supply unit, including the casing, set up in the inside electric core group of casing and be fixed in the reinforcing plate on the shells inner wall, be provided with on this reinforcing plate and hang and establish the structure. In addition, the battery pack further comprises a fixing band, the two ends of the fixing band are provided with hanging holes, the fixing band surrounds the cell group, and the hanging holes are hung on the reinforcing plate to form a hanging structure for fixing the cell group. In this application, establish the reinforcing plate of structure and offer to hang the fixed band of establishing the hole through being provided with to hang, realize on the fixed basis of the packing of electric core group, adaptable in the fixed of the electric core group of different shapes, size, avoided needing to design different modules correspondingly among the prior art and realized the fixed problem that increases the research and development cost that exists.

Description

Non-modular battery pack and power supply device

Technical Field

The utility model relates to a power battery technical field particularly, relates to a no modularization battery package and power supply unit.

Background

The battery pack is one of the core parts of the electric automobile, and a reliable battery pack has important significance for the electric automobile. At present, a battery pack is generally assembled by a battery module including a plurality of battery cells. Since the different types of electric vehicles have large differences in body structures and sizes, the shapes and sizes of the cases for carrying the battery packs are greatly different. Therefore, the battery module of a single shape structure is generally not compatible with the battery cases of different shapes and sizes, which in turn results in the need to develop battery modules of different shapes and sizes according to the cases of different shapes and sizes, such that a great deal of research and development expenses and research and development time are required to develop a new battery module.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a no modularization battery package and power supply unit, it can realize the fixed of electric core, and reduces the design cost when being adapted to different battery case.

The embodiment of the utility model is realized like this:

in a first aspect, an embodiment of the present invention provides a non-modular battery pack, including:

a housing;

the electric core group is arranged inside the shell;

the reinforcing plate is arranged on the inner wall of the shell and provided with a hanging structure;

the fixed band, the both ends of fixed band have been seted up and have been hung and establish the hole, the fixed band encloses to be located behind the cell group, through hang and establish the hole and hang and establish and locate hanging on the reinforcing plate establishes the structure in order to fix the cell group.

In an alternative embodiment, the fixing band is any one of a steel band, a cloth band or a plastic band.

In an alternative embodiment, the battery pack comprises a plurality of rows of battery cells;

the battery pack further comprises a heating plate arranged in the shell, the heating plate is arranged between two adjacent rows of battery cores, and heating wires are arranged on the outer wall of the heating plate.

In an optional embodiment, the heating plate is provided with a plurality of preformed holes arranged at intervals, and the plurality of preformed holes are arranged along the arrangement direction of the plurality of battery cells in the single row of battery cells.

In an alternative embodiment, an insulating part is further disposed between the heating plate and the electric core assembly, and the insulating part is coated with a structural adhesive.

In an optional embodiment, an accommodating groove is formed in the outer wall of the heating plate, and the heating wire is accommodated in the accommodating groove;

and tin foil paper is arranged at the opening of the accommodating groove.

In an optional embodiment, a plurality of buckling structures are arranged on the heating plate and used for buckling the heating wire so as to fix the heating wire on the outer wall of the heating plate.

In an optional embodiment, one end of the heating plate, which is far away from the bottom of the shell, is provided with a plurality of fixing holes, the battery pack further comprises a bracket covered on the battery core group, and a plurality of buckles are arranged at positions on the bracket corresponding to the fixing holes.

In an optional embodiment, the battery pack further comprises foam and buffer cotton;

the foam is arranged at the position of the bottom of the shell corresponding to the electric core group;

the buffer cotton is arranged between the reinforcing plate and the electric core group and between the electric core group and the bottom of the shell.

In a second aspect, an embodiment of the present invention provides a power supply device, including a bus bar, an electrode plate and any one of the foregoing embodiments, the battery pack is provided with a plurality of battery cells, and the bus bar is disposed on one side of the battery cell set away from the bottom of the housing.

The embodiment of the utility model provides a beneficial effect is:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a non-modular battery pack according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a fixing band according to an embodiment of the present invention;

FIG. 3 is a partial structural view of a portion A in FIG. 1;

fig. 4 is a schematic structural diagram of a reinforcing plate according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a heating plate and a housing according to an embodiment of the present invention;

fig. 6 is another schematic structural diagram of a non-modular battery pack according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a heating plate according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a fastening structure according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a housing and an insulating structure according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a bracket according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a power supply device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of another view angle of the power supply device according to the embodiment of the present invention.

Icon: 00-a power supply device; 10-a housing; 20-electric core group; 30-a reinforcing plate; 31-hanging structure; 32-buffer cotton; 40-fixing the belt; 41-hanging holes; 50-heating plate; 51-a heating wire; 52-a receiving groove; 53-preformed hole; 54-a fixation hole; 55-buckling structure; 60-side plate; 70-an end plate; 80-an insulating member; 90-a scaffold; 91-buckling.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Referring to fig. 1 to 4, an embodiment of the present application provides a non-modular battery pack, which includes a housing 10, a battery cell assembly 20 disposed inside the housing 10, and a reinforcing plate 30 disposed on an inner wall of the housing 10, wherein the reinforcing plate 30 is provided with a hanging structure 31. In addition, the non-modular battery pack further comprises a fixing strap 40, and hanging holes 41 are formed at two ends of the fixing strap 40. After the fixing band 40 is disposed around the electric core assembly 20, the hanging structure 31 disposed on the reinforcing plate 30 can be hung through the hanging hole 41 to fix the electric core assembly 20.

In the present embodiment, the shape and size of the housing 10 are not limited, and may be, for example, a rectangular parallelepiped shape, a square shape, or another shape. The shape and size of the housing 10 may be designed according to the body structure and size of the electric vehicle to which the housing is applied.

In the modular battery pack adopted in the prior art, the battery pack is assembled by assembling the monomer cells into a module, and then fixedly assembling the module into the battery pack by bolts and the like after the module is assembled into the shell 10. As can be seen from the above, the different body structures and sizes of different electric vehicles result in large differences in the shapes and sizes of the battery cases 10 for carrying the battery packs, and in order to adapt to the shapes of the battery cases 10, a battery module with a single shape and size cannot be compatible with the battery cases 10 with different shapes and sizes. Therefore, a battery generally includes one or more battery modules having different shapes and sizes, and thus it is necessary to develop the battery modules having different shapes and sizes, resulting in an increase in development costs.

In the embodiment, the fixing band 40 and the reinforcing plate 30 are adopted, the electric core assembly 20 is packed and fixed by the fixing band 40, and the hanging hole 41 on the fixing band 40 and the hanging structure 31 on the reinforcing plate 30 are used, so that the electric core assembly is stably fixed. The non-modular battery pack can avoid the problem of high cost of designing different modules to accommodate different battery cases 10.

In this embodiment, the fixing band 40 may be any one of a steel band, a cloth band, and a plastic band. The fixing band 40 may have a deformation characteristic, so that it may be suitable for packing and fixing the electric core pack 20 of different shapes. And, can also be according to the difference of the size of electric core group 20, correspondingly design the fixed band 40 of different length to through the length of adjustment fixed band 40, with at fixed band 40 after enclosing to locate electric core group 20 and hang the structure 31 of establishing of hanging on reinforcing plate 30, can pack fixed electric core group 20 with tightening.

The number of the fixing bands 40 is not limited to one, two or three, for example, in the vertical direction of the electric core assembly 20, the electric core assembly 20 can be enclosed and fixed from the upper part and the lower part, respectively.

In this embodiment, the reinforcing plate 30 may be provided with through holes, and the hanging structure 31 may be disposed on one side of the reinforcing plate 30 away from the electric core assembly 20, so that two ends of the fixing band 40 can respectively pass through the through holes on the reinforcing plate 30, and the hanging holes 41 are hung on the hanging structure 31. The hanging structure 31 may be, for example, an L-shaped structure, or a structure similar to a button, and the embodiment is not limited to this, and after the hanging hole 41 is hung on the hanging structure 31, it is ensured that the fixing strap 40 will not fall off from the hanging structure 31.

Considering that the electric core pack 20 is directly placed inside the casing 10 and then packed and fixed, and the phenomenon such as displacement is easy to occur, please refer to fig. 5, in this embodiment, the non-modular battery pack further includes a heating plate 50 disposed inside the casing 10, and the heating plate 50 may be integrally formed with the casing 10, or may be formed separately and then the heating plate 50 is fixed inside the casing 10. The number of the heating plates 50 may be two, three, etc. without limitation.

The battery pack 20 generally includes a plurality of battery cells arranged in a plurality of rows, and the heating plate 50 may be disposed between two adjacent rows of battery cells. So, because hot plate 50 fixed connection is in casing 10, and electric core sets up in the both sides of hot plate 50, when fixed band 40 encloses to locate electric core group 20 periphery and packs fixedly, because hot plate 50 is fixed in casing 10, then electric core group 20 after the packing can be fixed for casing 10, plays the effect of avoiding shifting to a certain extent.

Further, referring to fig. 1, the battery pack may further include a side plate 60, the side plate 60 may be disposed on the periphery of the electric core assembly 20, that is, may be disposed on both sides of the electric core assembly 20, and the fixing band 40 is further disposed on the side plate 60 to pack and fix the electric core assembly 20.

Referring to fig. 6, an end plate 70 is further disposed at one end of the electric core assembly 20 away from the reinforcing plate 30, so that the electric core assembly 20 can be stabilized from the periphery by the end plates 70 at the two ends, the reinforcing plate 30 and the side plates 60 at the two sides.

In addition, considering the influence of the ambient temperature, in some places, the ambient temperature is low in winter, and the use of the battery is influenced. For example, when the ambient temperature is below zero degrees centigrade, the battery will not allow charging. Therefore, for a vehicle that needs to be used in a low-temperature environment, enabling heating of the battery has become a necessary configuration for the battery pack. The conventional heating methods generally adopt heating film heating, fan heating, liquid heating and the like, and these methods have the problem of high cost or have the problem of poor heating effect.

Referring to fig. 5 again, in the present embodiment, based on the above consideration, a heating wire 51 is disposed on an outer wall of the heating plate 50 for heating the battery cell. Can all set up heater strip 51 on the outer wall of the both sides of hot plate 50, heater strip 51 can be the roundabout setting of making a round trip of many circles on the outer wall of hot plate 50 to can set up and be covered with hot plate 50, improve the heating effect to electric core. Wherein, the number of turns of the heating wire 51 can be determined according to the heating efficiency requirement.

In this embodiment, the heating mode of the heating wire 51 is adopted to realize the heating of the battery core, so that the problem of cost reduction can be solved, and the battery core is arranged on two sides of the heating plate 50, so that the heating wire 51 on the heating plate 50 can be used for realizing the short-distance heating of the battery core, and the heating effect is improved.

In this embodiment, in order to firmly dispose the heating wire 51 on the outer wall of the reinforcing plate 30, as a possible implementation manner, please refer to fig. 7, a containing groove 52 may be formed on the outer wall of the heating plate 50, and the heating wire 51 may be contained in the containing groove 52. The receiving groove 52 may be formed on the outer wall of the heating plate 50 in a plurality of turns.

In addition, in order to avoid contact between the heating wire 51 and the battery cell, tinfoil paper is further arranged at the opening of the accommodating groove 52, so that the purpose of avoiding leakage of the heating wire 51 is achieved.

In another possible implementation, referring to fig. 8, in order to fix the heating wire 51 on the heating plate 50, a plurality of fastening structures 55 are provided on the heating plate 50, and the fastening structures 55 can be used for fastening the heating wire 51 to fix the heating wire 51 on the outer wall of the heating plate 50.

In this embodiment, in order to avoid the cell from directly contacting the heating plate 50 and further contacting the casing 10, and an insulation fault occurs in the vibration process, please refer to fig. 9, insulation members 80, such as insulation paper, insulation plates (e.g., epoxy plates), and the like, are further disposed between the heating plate 50 and the cell, and between the cell and the bottom of the casing 10.

In order to further realize stable fixation of the battery cell, a through hole, such as a waist hole, may be opened on the insulating member 80, and a structural adhesive may be disposed at the through hole, so that the structural adhesive disposed at the through hole may adhere the battery cell and the heating plate 50 at both sides, thereby stably fixing the battery cell to the heating plate 50.

Wherein, the through-hole of seting up on insulating part 80 can be a plurality of, and the mode of arranging can set up according to arranging of electric core, for example, can set up the interval between two adjacent through-holes correspondingly according to the interval between two adjacent electric cores to make each electric core all can pass through the structural adhesive and glue and connect in hot plate 50, guarantee effective fixed of electric core.

In this embodiment, considering that some of the electric core groups 20 may have a smaller number of integral electric cores and a smaller overall size, in order to also pack and fix the electric core group 20 with a smaller overall size, please refer to fig. 7, a plurality of preformed holes 53 arranged at intervals are formed on the heating plate 50, and the plurality of preformed holes 53 are arranged along the arrangement direction of the plurality of electric cores in the single row of electric cores.

Thus, for example, when the number of cells in the cell pack 20 is small and not enough to be fully arranged in the casing 10, the effective fixing can be realized by adjusting the length of the fixing band 40, and after the cell pack 20 is arranged along both sides of the heating plate 50, the fixing band 40 passes through the preformed hole 53 nearest to the edge position of the cell pack 20, and after being arranged around the periphery of the cell pack 20, is hung on the hanging structure 31.

In this embodiment, the plurality of preformed holes 53 formed in the heating plate 50 may be arranged in a single row or in multiple rows, for example, when the number of the fixing bands 40 surrounding the electric core assembly 20 is two, the preformed holes 53 may be arranged in two rows correspondingly, so that the fixing bands 40 on the upper and lower sides can pass through the corresponding preformed holes 53.

In this embodiment, the heating plate 50 is provided with a plurality of preformed holes 53, and the length of the fixing band 40 is adjusted, so that the fixing device is suitable for effectively fixing the electric core groups 20 with different overall sizes.

In addition, in order to avoid collision between components in the event of sloshing, a buffer cotton 32 is further disposed between the reinforcing plate 30 and the electric core assembly 20, please refer to fig. 3.

In the present embodiment, it is considered that there may be unevenness at the bottom of the casing 10, or there may be slight difference in height of each battery cell, so as to cause unevenness at the top of the battery cell group 20, and cause welding and contact effects to be affected when subsequently performing welding of the tab and the like.

Therefore, in this embodiment, the battery pack further includes the foam, and this foam sets up in the position department that casing 10 bottom corresponds with electric core group 20 to can compensate electric core size error in the direction of height, the uniformity of height when the guarantee utmost point ear welds. Wherein, the specific position of the foam and the specific quantity of the foam can be correspondingly set according to the specific condition of each battery cell in the battery cell group 20.

Referring to fig. 7 and 10, in the present embodiment, a plurality of fixing holes 54 are further formed at one end of the heating plate 50 away from the bottom of the casing 10, the battery pack further includes a bracket 90 covering the electric core assembly 20, and a plurality of fasteners 91 are disposed on the bracket 90 at positions corresponding to the fixing holes 54. So, when locating support 90 lid on electric core group 20, accessible buckle 91 lock in fixed orifices 54 to can prevent effectively that support 90 from warping and leading to the ascending dimensional deviation of Z direction, and influence welded problem such as follow-up pole piece.

The non-modular battery pack provided by the embodiment packs and fixes the electric core pack 20 through the fixing band 40. The battery pack structure is simple in structure, few in types of parts, capable of simplifying production process, capable of shortening product development period, suitable for battery cell non-modular battery pack structures of shells 10 in different shapes, and provided with the heating wires 51 to achieve a heating function. In addition, this battery pack dismantles conveniently, and when local electric core damaged, only need to establish structure 31 with fixed band 40 from hanging and take off, cut the pole piece, can take out the electric core that damages, change for new electric core can.

On the basis, please refer to fig. 11 and 12 in combination, an embodiment of the present application further provides a power supply device 00, where the power supply device 00 includes a bus bar, electrode plates, and a module-free battery pack in any of the above implementations. Wherein, the collecting board is arranged on one side of the cell group 20 far away from the bottom of the casing 10, and the electrode plates are arranged on the collecting board and connected with each cell contained in the cell group 20.

In addition, the power supply apparatus 00 further includes a plurality of detection parts, such as a voltage collecting part, a temperature collecting part, a humidity collecting part, and the like, provided in the housing 10. Each detection section may be connected to an external processing device so as to transmit information on the power supply apparatus 00 to a processing device for analysis processing.

For other details of the power supply apparatus 00 provided in this embodiment, reference may be made to the above description of the non-modular battery pack, and details of this embodiment are not described herein.

To sum up, the non-modular battery pack and the power supply device 00 provided by the present application include the housing 10, the electric core assembly 20 disposed inside the housing 10 and the reinforcing plate 30 fixed on the inner wall of the housing 10, and the hanging structure 31 is disposed on the reinforcing plate 30. In addition, the battery pack further comprises a fixing strap 40, wherein two ends of the fixing strap 40 are provided with hanging holes 41, the fixing strap 40 is arranged around the electric core assembly 20, and the hanging holes 41 are used for hanging the hanging structure 31 arranged on the reinforcing plate 30 so as to fix the electric core assembly 20. In this application, through being provided with the reinforcing plate 30 of hanging establishing structure 31 and offering and hanging the fixed band 40 of establishing hole 41, realize on the fixed basis of the packing of electric core group 20, adaptable in the electric core group 20 of different shapes, size fixed, avoided needing to design different modules correspondingly among the prior art and realized the fixed problem that increases the research and development cost that exists.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An modularly constructed battery pack, comprising:

a housing;

the electric core group is arranged inside the shell;

2. The non-modular battery pack according to claim 1, wherein the fixing tape is any one of a steel tape, a cloth tape, or a plastic tape.

3. The modular battery pack of claim 1, wherein the battery pack comprises a plurality of rows of cells;

4. The non-modular battery pack according to claim 3, wherein the heating plate is provided with a plurality of preformed holes arranged at intervals, and the plurality of preformed holes are arranged along the arrangement direction of the plurality of battery cells in the single row of battery cells.

5. The non-modular battery pack according to claim 3, wherein an insulating member is further disposed between the heating plate and the electric core pack, and the insulating member is coated with a structural adhesive.

6. The modular battery pack as claimed in claim 3, wherein the heating plate has a receiving groove formed on an outer wall thereof, and the heating wire is received in the receiving groove;

and tin foil paper is arranged at the opening of the accommodating groove.

7. The modularized battery pack as claimed in claim 3, wherein the heating plate is provided with a plurality of fastening structures for fastening the heating wire to the outer wall of the heating plate.

8. The battery pack without the module as claimed in claim 3, wherein a plurality of fixing holes are formed at one end of the heating plate away from the bottom of the case, the battery pack further comprises a bracket covering the battery pack, and a plurality of fasteners are disposed at positions of the bracket corresponding to the fixing holes.

9. The modular battery pack of any of claims 1-8, wherein the battery pack further comprises foam and cushioning;

10. A power supply device, comprising a bus bar disposed on a side of a cell core pack away from a bottom of a case, electrode tabs disposed on the bus bar and connected to respective cells contained in the cell core pack, and the modularised battery pack of any one of claims 1 to 9.