TW201944632A - Battery pack stacking structure capable of freely combining multiple battery packs as a whole to meet requirement for large electric capacity - Google Patents

Abstract

The present invention relates to a battery pack stacking structure, which comprises: a frame body, at least one battery cell, and a shell. Particularly, the frame body has a rectangular shape, and each of the opposite positions of each corner on the peripheries of two opposite surfaces is configured with a symmetric combined structure. The combined structure includes a conical convex portion on one side and a conical concave portion on the opposite side, wherein the convex portion and the concave portion are engaged with each other and provided as a combined form. Thus, with the convex portion on one side engaged with the concave portion on the opposite side, a plurality of frame bodies may be freely combined and extended.

Description

   Battery pack stack structure   

The invention relates to the design of a battery pack, especially to a stack structure of battery packs.

According to the common high-power demand products such as wireless hand tools, remote control aircraft, automobiles and portable appliances, nickel-cadmium batteries or lead-acid batteries have long been used. In order to implement environmental protection, in recent years, European regulations prohibit the entry of metals containing mercury, lead, and cadmium. As the pollution of lead and cadmium generated by these battery reactions cannot be ignored, the demand for alternative batteries is urgent, and some can be replaced by nickel-metal hydride Instead, but the first choice is still a high energy density lithium-ion battery. In the past, the applications of lithium batteries were mostly in low current and low power. At present, the high-power research and application of lithium batteries have become a hot field, especially requiring thinness and safety considerations.

At present, most of the existing batteries are fixed size and volume, that is, they are tailor-made for specific objects. The power is fixed and cannot be changed. Once the demand for power increases, there is no other way to make it; The parallel method is temporarily resolved, but it is not always the appropriate method.

In addition, due to the greatly improved performance of various types of electric vehicles, under the current crisis of energy exhaustion that may be faced, the industry has no way to develop and provide rechargeable lithium batteries or secondary batteries with high energy density and high output. Lithium batteries, therefore, it is urgent for the industry to provide a modular solid-state battery that greatly improves battery life and has a long life span.

In view of the problems encountered in the above industry, an object of the present invention is to provide a battery pack stacking structure, which can freely assemble and extend multiple battery packs into one body with a fixed capacity of a single battery pack, so as to meet the demand for large power.

In order to achieve the above object, the battery pack stacking structure designed by the present inventor includes a frame, at least one or more battery cells, and a case; in particular, the frame is rectangular and is formed on two opposite surfaces. A symmetrical combined structure is provided at the relative position of each corner of the surrounding. The combined structure includes a convex portion on the same surface and a concave portion on the other side, and the convex portion and the concave portion provide mutual fitting. In the combination mode, the plurality of frames can be combined and extended by using the fitting of the convex portion on the same side surface and the recessed portion on the other side surface.

The above-mentioned frame body may allow at least one or more battery cells to be combined. The battery cell includes a positive electrode, a negative electrode, and a separator, and has positive and negative ears, respectively.

The above-mentioned frame body further includes two opposite shells covering the outside of the battery cell, and combined with the frame body to form a completely closed and hollow space, so that the battery cell can be embedded and positioned and hidden inside.

The above-mentioned shells can be integrated or separated into two shells with mutually matching cross-sections facing each other.

The upper peripheral surface of the above frame is provided with two sets of terminals representing positive and negative polarity with a separation distance.

The positive and negative ear types of the above-mentioned battery cells are terminals that correspond to the relative positions of the frame body, including a combination of open round holes and closed round holes.

The convex portion and the concave portion in the combined structure of the above-mentioned shells may be matched conical shapes.

(1) ‧‧‧Battery pack

(2) ‧‧‧Frame

(21) ‧‧‧ convex

(22) ‧‧‧Concave

(23) ‧‧‧Terminal

(231) ‧‧‧Spacer

(232) ‧‧‧Groove

(233) ‧‧‧ Bolt

(3) ‧‧‧Battery

(31) ‧‧‧Positive

(32) ‧‧‧Negative

(33) ‧‧‧ diaphragm

(34) ‧‧‧Positive Ear

(35) ‧‧‧Negative ear

(4) ‧‧‧shell

FIG. 1 is an exploded view of a battery pack structure according to a preferred embodiment of the present invention.

FIG. 2 is a combination diagram of a battery pack according to a preferred embodiment of the present invention.

FIG. 3 is a partial exploded view of a frame of a preferred embodiment of the present invention.

FIG. 4 is another perspective view of a frame of a preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of an extended combination of a plurality of battery packs according to a preferred embodiment of the present invention.

Please refer to FIG. 1, which is a schematic diagram of a stack structure of a battery pack according to a preferred embodiment. As shown in the figure, the composition of the battery pack (1) includes: a frame (2), at least one or more battery cells (3), and a casing (4).

Please refer to FIG. 2 to FIG. 4 together. The frame body (2) is rectangular. A symmetrical combination structure is provided at each corner of the frame body (2) at opposite positions around the two opposite surfaces. Conical convex portions (21) at each corner of the same surface on the same side and conical concave portions (22) at each corner of the other surface; the convex portion (21) and the concave portion (22) provide mutual fitting In this combination, the plurality of frames (2) can use the fitting of the convex portion (21) on the same side surface and the recessed portion (22) on the other side surface to make the plurality of frames (2) ) As an axial combination extension; and the upper peripheral surface of the frame (2) (explained only in the direction shown in the figure, not as a limitation). The two groups with a separation distance are positive and negative. The terminal (23), the terminal (23) is designed on a joint end with two spacer plates (2 31), and the joint end of the terminal (23) is embedded in the frame (2) correspondingly When the groove (232) is used, two bolts (233) penetrating from the outside are penetrated between the spacer plates (231), and the binding can be completed to achieve the limiting effect, thereby obtaining extremely convenient effects of installation and disassembly.

The battery core (3) is no different from a user, and includes a positive electrode (31), a negative electrode (32), and a separator (33), and it is above the surroundings (only illustrated in the direction shown in the figure, not for This is limited) having positive and negative ears (34, 35).

The casing (4) can be made of metal material, covering the outside of the battery core (3), and combined with the frame (2) to form a closed hollow space, so that more than one of the battery cores (3) can be embedded. It is hidden inside to achieve protection and heat dissipation. The casing (4) can be made integrally or separately in implementation. In this embodiment, the casing (4) is separated and includes two casings (4) opposed to each other in a cross-section.

With the combination of the above units, in this embodiment, the frame (2) is thick enough to accommodate two cells (3), and the two cells (3) are separated by the frame (2). The two opposite sides are placed side by side, and when combined, the positive and negative ears (34, 35) of the two battery cells (3) can be separately connected to the frame according to the various needs of the user for the function of the battery. The relative positions of the body (2), each of the positive and negative terminals (23), are free to decide whether they are to be positioned in series or parallel to complete the electrical connection, and then the two cross-section shells are opposite to each other. The body (4) is respectively combined with the opposite sides of the frame (2), so that the two battery cells (3) can be covered and combined by the casing (4) and the frame to form a series battery pack or a parallel connection. Battery pack.

Please refer to FIG. 2, FIG. 4 and FIG. 5 again, the main design features of the present invention: a plurality of battery packs (1) can be provided to extend in a side-by-side combination, and form an integrated large-capacity battery structure. In particular, the plurality of battery packs (1) use the convex portions (21) formed at the corners around the same side surface in the own frame (2), and the corners around the opposite side surface in the adjacent frame (2). The corresponding recesses (22) are fitted to each other to form a combined body.

The above is extended in quantity through the combination of at least two battery packs through the cooperation between the opposite and matching convex portions (21) and concave portions (22) between the frame (1). Actual needs can be easily met.

In addition, the types of the positive and negative ears (34, 35) of the battery cell (3) are matched and combined with the terminals (23) corresponding to the relative positions of the frame (2), thereby making the positive and negative ears (34, 35) A convenient and rapid combining effect can be achieved. In a preferred embodiment, a combined structure including an open round hole and a closed round hole can be adopted.

Those who need to know, the descriptions and drawings disclosed in the above preferred embodiments are for the convenience of clarifying the technical content and technical means of the present invention, and do not therefore limit its scope. All modifications and changes to the structural details of the present invention, or equivalent substitutions and replacements of the components, should be within the scope of the present invention when the functional effects produced by them do not exceed the spirit covered by the description and drawings. Chen Ming.

Claims (7)

    A battery pack stacking structure includes a frame body, at least one or more battery cells, and a case. The battery pack is characterized in that the frame body is rectangular and is located at a relative position at each corner of two opposite surfaces. A symmetrical structure is provided. The combined structure includes a convex portion on the same surface and a concave portion on the other side, and the convex portion and the concave portion provide a combined type of mutual fitting, so that a large number of The frame body uses the fitting of the convex portion on the same side surface and the concave portion on the opposite side surface to achieve a combined extension effect.         The battery pack stacking structure described in item 1 of the scope of the patent application, wherein the frame body can allow at least one or more cells to be combined. The cell includes a positive electrode, a negative electrode, and a separator, and each has a positive electrode and a negative electrode. ear.         The stack structure of the battery pack according to item 1 of the scope of patent application, wherein the frame further includes two opposite shells covering the outer side of the battery cell, and combined with the frame to form a completely closed and hollow space, so that The battery can be embedded and hidden inside.         According to the battery pack stacking structure described in item 1 of the scope of the patent application, the case can be made as a single body or separated into two cases with mutually matching cross-sections facing each other in a ㄈ shape.         The stack structure of the battery pack according to item 1 of the scope of the patent application, wherein the upper peripheral surface of the frame is provided with two sets of terminals representing positive and negative polarity at a distance.         The stack structure of the battery pack according to item 2 of the scope of the patent application, wherein the positive and negative ears of the battery cell are terminals that correspond to the relative positions of the frame, including open round holes and closed round holes. Combined with construction style.         According to the battery pack stacking structure described in item 1 of the scope of the patent application, the convex portion and the concave portion of the combined structure may be matched conical shapes.