CN207587809U - A new lithium-ion battery pack - Google Patents

Abstract

The utility model discloses a novel lithium ion battery pack, which comprises a battery pack shell, wherein a heat dissipation mechanism is arranged outside the battery pack shell, a top cover is arranged at the top of the battery pack shell, a fixing mechanism is arranged in the battery pack shell, and a plurality of lithium ion batteries are fixedly arranged in the fixing mechanism; fixing mechanism includes fixed frame and fixed lid, and fixed frame includes that two are installed at the support bar of group battery shell bottom, and spacing is all installed at two support bar both ends, and the retainer plate is connected through the connecting strip in two support bar upper portions, and the locked groove is installed at the retainer plate both ends, and the fixed lid includes the roof of rectangle, is equipped with the battery fixed slot on the roof, and surface mounting has the shock pad under the roof, and the roof side all is equipped with the fixed strip, is located and installs the catch on the fixed strip on left and right sides, the utility model discloses can be firm fixed inside lithium ion battery, still have good radiating effect simultaneously, improved lithium ion battery group's working.

Description

A new lithium-ion battery pack

technical field

The utility model relates to the field of lithium ion batteries, in particular to a novel lithium ion battery pack.

Background technique

Lithium-ion battery is a secondary battery (rechargeable battery) that mainly relies on lithium ions to move between positive and negative electrodes to work. During the charging and discharging process, lithium ions intercalate and deintercalate back and forth between the two electrodes: during charging, lithium ions are deintercalated from the positive electrode, inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. Lithium-based batteries are divided into lithium batteries and lithium-ion batteries. Lithium-ion batteries are used in mobile phones and laptops, commonly known as lithium batteries. Batteries generally use materials containing lithium elements as electrodes, which are representatives of modern high-performance batteries.

Lithium-ion batteries are used more and more widely, but lithium-ion batteries should also pay attention to their own defects during use. First, the discharge current of the lithium-ion battery should not be too large. Excessive current will cause the internal heat of the battery, which may cause permanent damage; second, the lithium-ion battery cannot be over-discharged. Excessive discharge will cause this chemical change to have an irreversible reaction. Therefore, lithium-ion batteries are most afraid of over-discharge. Once the discharge voltage is lower than 2.7V, the battery may be scrapped.

In the prior art, lithium ion battery packs composed of lithium ion batteries are widely used. The lithium ion battery packs are not only small in size, but also have large electric energy capacity.

For example, the application number is CN201620239588.0, and the patent name is a utility model patent for a lithium-ion battery pack:

It fixes the internal batteries through the fastening mechanism, protects the internal batteries through the buffer mechanism, and ensures the insulation and thermal stability between adjacent batteries through the bracket. This utility model increases the impact resistance of the batteries after they are grouped. And anti-seismic performance, avoiding the thermal runaway of a single cell caused by the thermal runaway of its surrounding cells.

However, existing lithium-ion battery packs have the following drawbacks:

(1) The fixing method of the lithium-ion battery pack in the prior art is relatively complicated, and at the same time, the fixing of the battery is not reliable, and the shaking and friction of the internal battery may easily cause damage to the battery;

(2) The heat dissipation effect of the lithium-ion battery pack in the prior art is poor. When the discharge current is large, the battery pack cannot dissipate heat in time, which affects the working performance of the lithium-ion battery pack.

Contents of the invention

In order to overcome the shortcomings of the existing technical solutions, the utility model provides a new type of lithium ion battery pack, the utility model can firmly fix the internal lithium ion battery, and also has a good heat dissipation effect, which improves the working performance of the lithium ion battery pack , can effectively solve the problems raised by the background technology.

The technical scheme that the utility model solves its technical problem adopts is:

A novel lithium-ion battery pack, comprising a battery pack casing, a heat dissipation mechanism is installed outside the battery pack casing, a top cover is installed on the top of the battery pack casing, a fixing mechanism is provided inside the battery pack casing, and the fixing mechanism A number of lithium-ion batteries are fixed inside; the fixing mechanism includes a fixing frame and a fixing cover, and the fixing frame includes two 'L'-shaped support bars installed on the bottom of the battery pack shell, and the two support bars Both ends are equipped with 'L'-shaped limit bars, and the upper parts of the two support bars are connected with rectangular fixed rings through connecting bars. Lock grooves are installed at both ends of the fixed rings, and the fixed cover includes a rectangular A top plate, the top plate is provided with a battery fixing groove, and a shock absorber is installed on the lower surface of the top plate, and the front, rear, left, and right sides of the top plate are all provided with fixing strips, and lock rings are installed on the fixing strips located on the left and right sides .

Further, the heat dissipation mechanism includes fins installed on the outer surface of the battery pack casing, and the gap between the fins and the outer surface of the battery pack casing is filled with heat-conducting silicone grease, and the fins are provided with a protective net cover, and the protection The net cover is fixedly installed on the outer surface of the battery pack casing.

Further, two charging and discharging columns are installed on the upper surface of the top cover, and a handle placement groove is provided on the upper surface of the top cover, and a handle is movably installed in the handle placement groove.

Further, epoxy plates are placed between several adjacent lithium-ion batteries.

Further, heat-conducting silica gel is evenly filled between the fixing mechanism and the inner surface of the battery pack casing.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The fixing mechanism of the utility model can quickly and conveniently fix the lithium-ion battery firmly. First, open the lock ring to remove the fixing cover, then place the lithium-ion battery neatly between adjacent epoxy boards, and finally put the battery The fixing groove is aligned with the upper part of the lithium-ion battery, and the fixing cover is placed so that the lithium-ion battery 13 is stuck in the battery fixing groove, and the locking ring is buckled in the locking groove to complete the fixing of the battery.

(2) The heat dissipation mechanism of the utility model can dissipate the heat generated inside the shell of the battery pack in a timely manner, ensuring that the lithium-ion battery pack works within a normal temperature range and improving the working performance of the lithium-ion battery pack.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the fixing mechanism of the present invention.

Labels in the figure:

1-battery pack shell; 2-heat dissipation mechanism; 3-top cover; 4-fixing mechanism; 5-fixed frame; 6-fixed cover; 7-thermal conductive silicone grease; 8-charge and discharge column; -handle; 11-epoxy board; 12-thermal silica gel;

201-fin; 202-protective mesh cover;

501-support bar; 502-limit bar; 503-fixed ring; 504-lock groove;

601-top plate; 602-battery fixing slot; 603-fixing bar; 604-shock pad; 605-lock ring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1, the utility model provides a novel lithium-ion battery pack, including a battery pack case 1, and a heat dissipation mechanism 2 is installed outside the battery pack case 1, and the heat dissipation mechanism 2 is used for the heat generated inside the battery pack case 1. To ensure that the internal battery works within a normal temperature range, a top cover 3 is installed on the top of the battery pack case 1, and a fixing mechanism 4 is provided inside the battery pack case 1, and a fixing mechanism 4 is fixedly installed in the fixing mechanism 4. Several lithium-ion batteries 13, the fixing mechanism 4 firmly fixes the lithium-ion batteries 13, prevents the shaking and friction between the lithium-ion batteries 13, and causes damage to the lithium-ion batteries 13, the lithium-ion batteries 13 are connected in series by wires, and several pieces Epoxy plates 11 are placed between the adjacent lithium ion batteries 13 , the epoxy plates 11 not only play the role of insulation, but also avoid the mutual friction between the lithium ion batteries 13 .

As shown in Figure 1, the heat dissipation mechanism 2 includes fins 201 installed on the outer surface of the battery pack case 1, and the gap between the fins 201 and the outer surface of the battery pack case 1 is filled with thermally conductive silicone grease 7, which has high thermal conductivity. The heat-conducting silicone grease 7 increases the contact area between the battery pack casing 1 and the fins 201, effectively improving the effect of heat dissipation. The fins 201 are provided with a protective net cover 202, and the protective net cover 202 is fixedly installed on the On the outer surface of the battery pack casing 1 , the protective mesh cover 202 not only plays the role of protecting the fins 201 , but also increases the heat dissipation space of the fins 201 .

As shown in FIG. 1 , the space between the fixing mechanism 4 and the inner surface of the battery pack case 1 is uniformly filled with thermally conductive silica gel 12 , and the thermally conductive silica gel 12 not only plays the function of heat transfer, but also plays the role of fixing the lithium-ion battery 13 . It can effectively prevent the lithium ion battery 13 from shaking in the battery pack case 1 .

As shown in Figure 2, the fixing mechanism 4 includes a fixing frame 5 and a fixing cover 6, and the fixing frame 5 includes two 'L'-shaped support bars 501 installed on the bottom of the battery case 1, on the support bars 501 Shock-absorbing pads 604 are installed on the surface to reduce the vibration of the lithium-ion battery 13 in the fixing mechanism 4. Both ends of the two support bars 501 are equipped with 'L'-shaped limit bars 502, and the two support bars The upper part of 501 is connected with a rectangular fixing ring 503 through a connecting strip, and lock grooves 504 are installed at both ends of the fixing ring 503. The fixing cover 6 includes a rectangular top plate 601, and the top plate 601 is provided with a battery fixing groove 602. A shock-absorbing pad 604 is installed on the lower surface of the top board 601 , four sides of the top board 601 are provided with fixing strips 603 , and locking rings 605 are installed on the fixing strips 603 located on the left and right sides.

The fixing method of the lithium-ion battery 13 is as follows: firstly open the locking ring 605 to remove the fixed cover, then place the lithium-ion battery 13 neatly between the adjacent epoxy boards 11, and finally align the battery fixing slot 602 with the lithium-ion battery 13 on the top, place the fixed cover 6 so that the lithium-ion battery 13 is stuck in the battery fixing groove 602, and the locking ring 605 is buckled in the locking groove 504 to complete the fixing of the battery.

As shown in Figure 1, two charging and discharging columns 8 are installed on the upper surface of the top cover 3, and the two charging and discharging columns 8 are respectively electrically connected to the positive and negative electrodes of the battery pack after being connected in series, and the upper surface of the top cover 3 is provided with The handle is placed in the groove 9, and the handle 10 is movably installed in the said handle placed groove 9, which is convenient for putting and taking the battery pack.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A new type of lithium-ion battery pack, including a battery pack case (1), characterized in that: a heat dissipation mechanism (2) is installed outside the battery pack case (1), and a top of the battery pack case (1) is installed The top cover (3), the battery pack casing (1) is provided with a fixing mechanism (4), and a plurality of lithium-ion batteries (13) are fixedly installed in the fixing mechanism (4); The fixing mechanism (4) includes a fixing frame (5) and a fixing cover (6), and the fixing frame (5) includes two 'L'-shaped support bars (501 ), both ends of the two support bars (501) are equipped with 'L'-shaped limit bars (502), and the upper parts of the two support bars (501) are connected with rectangular fixed rings (503 ), the two ends of the fixing ring (503) are equipped with locking grooves (504), the fixing cover (6) includes a rectangular top plate (601), and the top plate (601) is provided with a battery fixing groove (602), A shock absorber (604) is installed on the lower surface of the top plate (601), and fixing strips (603) are provided on the front, rear, left, and right sides of the top plate (601), and the fixing strips (603) on the left and right sides are installed With locking ring (605). 2. A new lithium-ion battery pack according to claim 1, characterized in that: the heat dissipation mechanism (2) includes fins (201) installed on the outer surface of the battery pack case (1), and the fins (201) and the outer surface of the battery pack casing (1) are filled with heat-conducting silicone grease (7), and the fins (201) are provided with a protective net cover (202), and the protective net cover (202) is fixedly installed on The outer surface of the battery pack housing (1). 3. A new type of lithium-ion battery pack according to claim 1, characterized in that two charging and discharging columns (8) are installed on the upper surface of the top cover (3), and the upper surface of the top cover (3) A handle placement groove (9) is provided, and a handle (10) is movably installed in the handle placement groove (9). 4. A new type of lithium-ion battery pack according to claim 1, characterized in that epoxy plates (11) are placed between several adjacent lithium-ion batteries (13). 5. A new type of lithium-ion battery pack according to claim 1, characterized in that: thermal conductive silica gel (12) is evenly filled between the fixing mechanism (4) and the inner surface of the battery pack shell (1).