CN218274821U - Lithium battery pack assembly with protective structure - Google Patents

Abstract

The utility model discloses a lithium battery pack assembly with a protective structure, comprising: a protective shell, the protective shell includes an inner cavity for accommodating the protective assembly; the protective assembly includes a positioning part, a heat dissipation part and a control part, and the positioning part, the heat dissipation The part and the control part together form a cavity for accommodating the battery pack part, and the heat dissipation part is used to reduce the temperature in the cavity; the heat dissipation part is arranged at both ends of the positioning part, and the control part is arranged at the top of the positioning part; the battery pack part It includes a main body of the lithium battery pack and an additional lithium battery arranged at one end of the main body of the lithium battery pack. The additional lithium battery is electrically connected with the protection component to provide power for the protection component. The charging protection structure of the lithium battery pack, through the cooperation of the heat dissipation part and the control board, dissipates heat away from the main body of the lithium battery pack, so that the charging process of the lithium battery pack will not be interrupted due to its own overheating, ensuring that the lithium battery pack The main body can complete charging smoothly.

Description

Lithium battery pack assembly with protective structure

technical field

The utility model relates to the technical field of battery charging, in particular to a lithium battery pack assembly with a protective structure.

Background technique

Lithium batteries are a type of batteries that use lithium metal or lithium alloys as positive/negative electrode materials and use non-aqueous electrolyte solutions. Lithium battery packs are generally used as a power source for new energy vehicles.

During the charging process of the lithium battery charging pack, its own temperature will rise accordingly, which has little effect on the lithium battery pack within a certain range, but in the case of superposition of other high temperature factors, it will cause damage to the lithium battery pack, because it is resistant to high temperature. There are certain limitations in the ability to withstand, such as charging in high ambient temperature conditions, such as charging in summer, or charging outdoors for convenience, and charging takes at least several hours. During this process, sunlight may directly irradiate lithium batteries during charging. Batteries (this usually occurs unintentionally by the user).

As we all know, the existing lithium battery packs usually only have a protective shell. When encountering the above situation, it is difficult to effectively dissipate heat to reduce the temperature of the lithium battery. Nowadays, lithium batteries are more and more widely used, and the safety issue of lithium batteries has become a It is a technical problem that must be solved, therefore, the applicant proposes corresponding improvements.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a lithium battery pack assembly with a protective structure.

In order to achieve the above object, the utility model adopts the following technical solutions:

Lithium battery pack assembly with protective structure, including:

a protective casing, the protective casing includes an inner cavity for accommodating a protective component;

The protection assembly includes a positioning part, a heat dissipation part and a control part, and a cavity for accommodating the battery pack is formed around the positioning part, the heat dissipation part and the control part, and the heat dissipation part is used to lower the temperature in the cavity. temperature;

The heat dissipation part is arranged at both ends of the positioning part, and the control part is arranged at the top end of the positioning part;

The battery pack part includes a main body of the lithium battery pack and an additional lithium battery disposed at one end of the main body of the lithium battery pack. The additional lithium battery is electrically connected with the protection component to provide power to the protection component.

In the above technical solution, preferably, a top cover is installed on the top of the protective case, and a charging socket is arranged on the front of the protective case.

In the above technical solution, preferably, both ends of the protective shell are provided with heat dissipation windows, and the positions of the two heat dissipation windows correspond to the positions of the two heat dissipation parts.

In the above technical solution, preferably, the control part includes a protective cover, and a control main board is installed on the upper surface of the protective cover.

In the above technical solution, preferably, the heat dissipation part includes a mounting frame and a plurality of cooling fans arranged on the mounting frame.

In the above technical solution, preferably, a ceramic splitter plate is arranged on one side of the installation frame.

In the above technical solution, preferably, a protective mesh plate 1 is installed on one side of the ceramic distribution plate, and a plurality of temperature sensors 2 are installed on one side of the protective mesh plate 1.

In the above technical solution, preferably, the positioning part includes a positioning frame, and a charging interface corresponding to the position of the charging jack is installed on the front of the positioning frame.

In the above technical solution, preferably, a positioning grid is connected inside the positioning frame.

In the above technical solution, preferably, the inner wall of the positioning frame is equidistantly provided with a plurality of ventilation slots, and the inner walls of both sides of the positioning grid are equipped with a plurality of temperature sensors one.

Compared with the prior art, the utility model provides a lithium battery pack assembly with a protective structure, which has the following beneficial effects:

The utility model dissipates heat to the main body of the lithium battery pack through the cooperation of the heat dissipation part and the control main board, so that the lithium battery pack will not cause damage to the lithium battery or cause safety accidents due to its own overheating during the charging process;

Through the cooperation of the positioning grid, the first protective grid and the second protective grid, the air that absorbs the temperature of the main body of the lithium battery pack can flow smoothly, and cooperate with the cooling fan to ensure its heat dissipation efficiency; at the same time, the structure of the grid and the grid has a certain Buffer capacity, better protection for the main body of the lithium battery pack.

Description of drawings

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

Fig. 2 is a structural schematic diagram of a cross-section of the protective shell of the present invention;

Fig. 3 is a schematic diagram of the exploded structure of the protection component and the battery pack of the utility model.

In the figure: 1. Protective shell; 2. Top cover installation; 3. Heat dissipation window; 4. Charging jack; 5. Positioning part; 51. Positioning frame; 52. Charging interface; 53. Positioning grid; 54. Ventilation slot ;55, temperature sensor one; 6, heat dissipation part; 61, mounting frame; 62, heat dissipation fan; 63, ceramic splitter plate; 64, protection net plate one; 71, protective cover plate; 72, control main board; 73, protection net plate two; 8, battery pack part; 81, lithium battery pack main body; 82, electrode group; 83, additional lithium battery.

detailed description

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.

See Figure 1-Figure 3, lithium battery pack assembly with protective structure, including:

The protective shell 1 is used to protect the overall device and improve the ability of the overall device to resist external impacts; the top of the protective shell 1 is fixed with a top cover 2 by bolts, and the top cover 2 can be removed to directly observe each component inside the protective shell 1.

Both ends of the protective shell 1 are provided with heat dissipation windows 3, and the heat dissipation windows 3 are set to be inclined downward. Referring to FIG. There is a charging jack 4 on the front for plugging in the charger. The charger is provided with an overcharge protection circuit (to avoid overcharging of the lithium battery pack), and a rubber plug can be installed inside the charging jack 4 according to the actual usage.

The inside of the protective shell 1 is provided with a protection assembly, and the inside of the protection assembly is equipped with a battery pack 8 , and the protection assembly dissipates heat to the battery pack 8 during the charging process of the lithium battery pack 8 .

The battery pack part 8 includes a lithium battery pack main body 81, and an electrode group 82 is arranged on the front of the lithium battery pack main body 81 for connecting a charging and discharging circuit. One end of the lithium battery pack main body 81 is fixedly connected with an additional lithium battery 83 through a Lothar mix.

The additional lithium battery 83 provides power to the protection components to ensure that the protection components can continue to operate; the additional lithium battery 83 is connected in series with the charging circuit of the lithium battery pack main body 81, and the two perform charging work synchronously. The capacity of the additional lithium battery 83 is much smaller than that of the lithium battery pack For the main body 81, during the charging process, the additional lithium battery 83 completes charging first, and then supplies power to the protection component, and the protection component performs accelerated heat dissipation treatment on the main body 81 of the lithium battery pack.

The protection assembly includes a positioning part 5, and the battery pack part 8 is installed inside the positioning part 5. Both ends of the positioning part 5 are provided with heat dissipation parts 6, and the two heat dissipation windows 3 correspond to the two heat dissipation parts 6, so as to facilitate the flow of heat dissipation. Flow, and the top end of the positioning part 5 is provided with a control part 7, the control part 7 is used to control the work of the heat dissipation part 6.

The positioning part 5 includes a positioning frame 51. The positioning frame 51 is arranged in a U shape. The front of the positioning frame 51 is fixedly equipped with a charging interface 52. The charging interface 52 is electrically connected to the electrode group 82 of the lithium battery pack main body 81, and is connected to the charging jack. 4 through, and the inside of the positioning frame 51 is welded with a positioning grid 53, the positioning grid 53 is the same shape as the positioning frame 51.

The inner wall of the positioning frame 51 is equidistantly provided with a plurality of ventilation grooves 54, and the airflow flowing inside the ventilation grooves 54 can directly pass through the positioning grid frame 53, and contact with the battery pack part 8 inside the positioning grid frame 53, and the two sides of the positioning grid frame 53 A plurality of temperature sensors 55 are fixedly mounted on the side inner walls, and the temperature sensors 55 are used to detect the temperature of the main body 81 of the lithium battery pack and are electrically connected to the control unit 7 .

The heat dissipation part 6 includes a mounting frame 61, and a plurality of heat dissipation fans 62 are fixedly installed inside the mounting frame 61, and one side of the mounting frame 61 is bonded with a ceramic splitter plate 63, and the inside of the ceramic splitter plate 63 is provided with a plurality of holes for convenience. The cooling fan 62 guides the air flow.

One side of the ceramic splitter plate 63 is bonded with a protective mesh plate-64, and the protective mesh plate-64 is directly attached to the battery pack part 8, and the airflow guided by the cooling fan 62 can directly contact the battery pack part 8, and the protective mesh plate-1 A plurality of temperature sensors 2 66 are fixedly installed on one side of 64 , and the temperature sensors 2 66 are used to detect the temperature of the lithium battery pack main body 81 and are electrically connected to the control unit 7 .

The ceramic splitter plate 63 includes two parts, one part is directly bonded to the mounting bracket 61, and the other part is equidistantly provided with a plurality of ventilation holes 65 corresponding to the ventilation slots 54 to facilitate air flow.

Referring to FIG. 3 , there are two cooling parts 6 , one draws low-temperature air from the outside and introduces it into the protective case 1 , and the other draws high-temperature air from the inside of the protective case 1 and leads it out, so that the battery pack part 8 can be charged during the charging process by the flow of air. Rapid heat dissipation in.

The control part 7 includes a protective cover plate 71, the protective cover plate 71 is made of heat insulating material, the upper surface of the protective cover plate 71 is fixedly installed with a control main board 72, and the lower surface of the protective cover plate 71 is bonded with a protective mesh plate 2 73. The second protective net 73 is attached to the top of the battery pack part 8 .

working principle:

Please refer to Figure 1 to Figure 3, and assemble the device as shown in Figure 1;

When charging the lithium battery pack main body 81, the control board 72 monitors the temperature of the lithium battery pack main body 81 through temperature sensor one 55 and temperature sensor two 66. When the temperature of the lithium battery pack main body 81 is greater than forty-five degrees Celsius, the control The main board 72 starts the cooling fans 62 of the two cooling parts 6;

One of the cooling fans 62 draws low-temperature air from the outside through the corresponding cooling window 3 (this low temperature is actually normal temperature air in a natural state compared to the high temperature emitted by the lithium battery pack body 81 itself during the charging process);

The low-temperature air is shunted through the ceramic splitter plate 63, and one part is blown directly to the main body 81 of the lithium battery pack, and the other part enters the interior of the ventilation slot 54 through the ventilation hole 65, and then blows to the main body 81 of the lithium battery pack through the positioning grid 53;

Another group of cooling fans 62 draws away the high-temperature air that absorbs the temperature of the lithium battery pack main body 81 and discharges it through the corresponding cooling windows 3 .

Note: the above-mentioned connection mode between the additional lithium battery 83 and the main body 81 of the lithium battery pack, the electrical connection mode between the control board 72 and the temperature sensor one 55, the temperature sensor two 66 and the cooling fan 62 are all prior art means. I won't go into details.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (10)

1. Lithium battery pack subassembly with protective structure, its characterized in that includes:

the protective shell (1), the said protective shell (1) includes the cavity used for holding the protective assembly;

the protection assembly comprises a positioning part (5), a heat dissipation part (6) and a control part (7), a cavity for accommodating a battery pack part (8) is formed by the positioning part (5), the heat dissipation part (6) and the control part (7) in a surrounding mode, and the heat dissipation part (6) is used for reducing the temperature in the cavity;

the heat dissipation parts (6) are arranged at both ends of the positioning part (5), and the control part (7) is arranged at the top end of the positioning part (5);

the battery pack part (8) comprises a lithium battery pack main body (81) and an additional lithium battery (83) arranged at one end of the lithium battery pack main body (81), and the additional lithium battery (83) is electrically connected with the protection component to provide power for the protection component.

2. The lithium battery pack assembly with protective structure of claim 1, wherein: installation top cap (2) are installed on the top of protecting sheathing (1), just the front of protecting sheathing (1) disposes jack (4) that charges.

3. The lithium battery pack assembly with protective structure of claim 1, wherein: the heat dissipation window (3) have all been seted up at the both ends of protecting sheathing (1), two heat dissipation window (3) correspond with the position of two heat dissipation parts (6).

4. The lithium battery pack assembly with protective structure of claim 1, wherein: the control part (7) comprises a protective cover plate (71), and a control main plate (72) is arranged on the upper surface of the protective cover plate (71).

5. The lithium battery pack assembly with protective structure of claim 1, wherein: the heat dissipation portion (6) includes a mounting bracket (61) and a plurality of heat dissipation fans (62) arranged on the mounting bracket (61).

6. The lithium battery pack assembly with protective structure of claim 5, wherein: one side of the mounting frame (61) is provided with a ceramic shunt plate (63).

7. The lithium battery pack assembly with protective structure of claim 6, wherein: one side of the ceramic shunt plate (63) is provided with a first protection screen plate (64), and one side of the first protection screen plate (64) is provided with a plurality of second temperature sensors (66).

8. The lithium battery pack assembly with protective structure of claim 2, wherein: the positioning portion (5) comprises a positioning frame (51), and a charging interface (52) corresponding to the position of the charging jack (4) is installed on the front face of the positioning frame (51).

9. The lithium battery pack assembly with protective structure of claim 8, wherein: the positioning rack (51) is internally connected with a positioning net rack (53).

10. The lithium battery pack assembly with protective structure of claim 9, wherein: a plurality of ventilation grooves (54) have been seted up to the inner wall equidistance of locating rack (51), a plurality of temperature sensor (55) are all installed to the both sides inner wall of location rack (53).

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