CN218274821U

CN218274821U - Lithium battery pack assembly with protection structure

Info

Publication number: CN218274821U
Application number: CN202222854865.7U
Authority: CN
Inventors: 刘朋儒
Original assignee: Yongkang Pengcheng Electronic Technology Co ltd
Current assignee: Yongkang Pengcheng Electronic Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-01-10
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a lithium cell package subassembly with protective structure, include: the protective shell comprises an inner cavity for accommodating the protective component; the protection assembly comprises a positioning part, a radiating part and a control part, a cavity for accommodating the battery pack part is formed by the positioning part, the radiating part and the control part in a surrounding mode, and the radiating part is used for reducing the temperature in the cavity; the heat dissipation parts are arranged at two ends of the positioning part, and the control part is arranged at the top end of the positioning part; the battery pack part comprises a lithium battery pack main body and an additional lithium battery arranged at one end of the lithium battery pack main body, and the additional lithium battery is electrically connected with the protection assembly and used for supplying power to the protection assembly. This lithium battery package protection architecture that charges through the cooperation of radiating part with the control mainboard, dispels the heat to lithium battery package main part, makes lithium battery package in charging process, can not because self is overheated, leads to the interrupt of the work of charging, guarantees that lithium battery package main part can accomplish smoothly and charge.

Description

Lithium battery pack assembly with protection structure

Technical Field

The utility model relates to a battery charging technology field especially relates to lithium cell package subassembly with protective structure.

Background

A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material. Lithium battery packs are generally used as a power source for new energy vehicles.

The lithium battery charging pack has the advantages that the temperature of the lithium battery charging pack is correspondingly increased in the charging process, the lithium battery pack is not greatly influenced in a certain range, the lithium battery pack is damaged under the condition that other high-temperature factors are superposed, the high-temperature bearing capacity is limited, the lithium battery charging pack is charged under the condition that the ambient temperature is high, the lithium battery charging pack is charged in summer, or the lithium battery charging pack is charged outdoors conveniently at least for several hours, and sunlight can directly irradiate the lithium battery in the charging process (the condition is usually caused under the condition that a user does not intend).

As is well known, the existing lithium battery pack usually has only one protective casing, and when the above situation occurs, it is difficult to effectively dissipate heat to reduce the temperature of the lithium battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a lithium battery pack assembly with a protection structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

lithium battery pack assembly with protective structure, comprising:

a protective housing including an interior cavity for receiving a protective component;

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

the heat dissipation parts are arranged at two ends of the positioning part, and the control part is arranged at the top end of the positioning part;

the battery pack part comprises a lithium battery pack main body and an additional lithium battery arranged at one end of the lithium battery pack main body, and the additional lithium battery is electrically connected with the protection component and used for providing power for the protection component.

Among the above-mentioned technical scheme, preferred, the installation top cap is installed on protecting sheathing's top, just protecting sheathing's front disposes the jack that charges.

Among the above-mentioned technical scheme, preferred, the radiating window has all been seted up at protecting sheathing's both ends, two the radiating window is corresponding with the position of two radiating parts.

In the above technical solution, preferably, the control portion includes a protective cover plate, and a control main board is mounted on an upper surface of the protective cover plate.

In the above technical solution, preferably, the heat radiating portion includes a mounting bracket and a plurality of heat radiating fans disposed on the mounting bracket.

In the above technical solution, preferably, a ceramic flow distribution plate is arranged on one side of the mounting bracket.

In the above technical solution, preferably, a first protection screen is installed on one side of the ceramic splitter plate, and a plurality of second temperature sensors are installed on one side of the first protection screen.

In the above technical scheme, preferably, location portion includes the locating rack, the front of locating rack install with the interface that charges that the jack position corresponds charges.

In the above technical solution, preferably, the positioning rack is connected inside the positioning rack.

Among the above-mentioned technical scheme, preferred, a plurality of ventilation grooves have been seted up to the inner wall equidistance of locating rack, a plurality of temperature sensor one are all installed to the both sides inner wall of locating rack.

Compared with the prior art, the utility model provides a lithium cell package subassembly with protective structure possesses following beneficial effect:

the utility model, through the cooperation of the heat dissipation part and the control mainboard, dissipates heat to the lithium battery pack main body, so that the lithium battery pack can not be damaged or have safety accidents due to self overheating in the charging process;

through the matching of the positioning net rack, the first protection net plate and the second protection net plate, air absorbing the temperature of the main body of the lithium battery pack can smoothly flow, and the heat dissipation efficiency of the lithium battery pack is ensured by matching with a heat dissipation fan; meanwhile, the structure of the net rack and the net plate has certain buffering capacity, and the lithium battery pack main body is better protected.

Drawings

FIG. 1 is a schematic structural view of the overall assembly of the present invention;

fig. 2 is a schematic structural view of the sectional view of the protective casing of the present invention;

fig. 3 is a schematic view of the explosion structure of the protection assembly and the battery pack of the present invention.

In the figure: 1. a protective housing; 2. installing a top cover; 3. a heat dissipation window; 4. a charging jack; 5. a positioning part; 51. a positioning frame; 52. a charging interface; 53. positioning the net rack; 54. a ventilation slot; 55. a first temperature sensor; 6. a heat dissipating section; 61. a mounting frame; 62. a heat-dissipating fan; 63. a ceramic manifold; 64. a first protection screen plate; 65. a vent hole; 66. a second temperature sensor; 7. a control unit; 71. a protective cover plate; 72. a control main board; 73. a second protection screen plate; 8. a battery pack portion; 81. a lithium battery pack main body; 82. an electrode group; 83. a lithium battery is attached.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a lithium battery pack assembly with a protective structure includes:

the protective shell 1 is used for protecting the whole device and improving the capability of the whole device for resisting external impact; the top of protecting sheathing 1 has installation top cap 2 through bolt fixed mounting, dismantles installation top cap 2, each subassembly that can the inside of direct observation protecting sheathing 1.

The two ends of the protective shell 1 are both provided with the heat dissipation windows 3, the heat dissipation windows 3 are arranged to be inclined downwards, and referring to fig. 2, on the basis of ensuring the heat dissipation capability, the waterproof capability of the protective shell 1 is ensured to the greatest extent; and the charging jack 4 is seted up on the front of protecting sheathing 1 for the grafting charger, the charger is provided with overcharge protection circuit (avoid the lithium cell package overcharge), can be according to the in-service use condition, at the jack 4 internally mounted rubber buffer that charges.

The inside of protecting sheathing 1 is provided with the protection subassembly, and the internally mounted of protection subassembly has battery package portion 8, and the protection subassembly is at 8 charging processes in lithium battery package portion, dispels the heat to battery package portion 8.

The battery pack part 8 includes a lithium battery pack main body 81, an electrode group 82 is provided on the front surface of the lithium battery pack main body 81 for connecting a charge and discharge circuit, and an additional lithium battery 83 is fixedly connected to one end of the lithium battery pack main body 81 by means of lossa mixing.

The additional lithium battery 83 provides power to the protection assembly to ensure that the protection assembly can operate continuously; the charging circuit of additional lithium cell 83 and lithium cell package main part 81 is established ties, and the two carries out charging work in step, and the capacity of additional lithium cell 83 is far less than lithium cell package main part 81, and in the charging process, additional lithium cell 83 takes the lead to accomplish and charges, then supplies power to the protection subassembly, and the protection subassembly is to lithium cell package main part 81 heat dissipation treatment with higher speed.

The protection component comprises a positioning part 5, a battery pack part 8 is installed inside the positioning part 5, heat dissipation parts 6 are arranged at two ends of the positioning part 5, two heat dissipation windows 3 correspond to the two heat dissipation parts 6, the heat dissipation airflow can flow conveniently, a control part 7 is arranged at the top end of the positioning part 5, and the control part 7 is used for controlling the work of the heat dissipation parts 6.

The positioning portion 5 comprises a positioning frame 51, the positioning frame 51 is in a U shape, a charging interface 52 is fixedly mounted on the front face of the positioning frame 51, the charging interface 52 is electrically connected with an electrode group 82 of the lithium battery pack main body 81 and communicated with the charging jack 4, a positioning net rack 53 is welded inside the positioning frame 51, and the positioning net rack 53 is identical to the positioning frame 51 in shape.

A plurality of ventilation grooves 54 have been seted up to the inner wall equidistance of locating rack 51, and the inside air current that flows of ventilation groove 54 can directly pass location rack 53, with the inside battery package portion 8 contact of location rack 53, the equal fixed mounting in both sides inner wall of location rack 53 has a plurality of temperature sensor 55, and temperature sensor 55 is used for detecting the temperature of lithium cell package main part 81 to with control portion 7 electric connection.

The heat dissipation portion 6 includes an installation frame 61, a plurality of heat dissipation fans 62 are fixedly installed inside the installation frame 61, a ceramic splitter plate 63 is bonded to one side of the installation frame 61, a plurality of holes are formed inside the ceramic splitter plate 63, and the heat dissipation fans 62 are convenient to guide airflow.

One side of the ceramic shunt plate 63 is bonded with a first protection screen 64, the first protection screen 64 is directly attached to the battery pack portion 8, the airflow guided by the cooling fan 62 can directly contact with the battery pack portion 8, one side of the first protection screen 64 is fixedly provided with a plurality of second temperature sensors 66, and the second temperature sensors 66 are used for detecting the temperature of the lithium battery pack main body 81 and are electrically connected with the control portion 7.

The ceramic flow distribution plate 63 comprises two parts, one part is directly bonded with the mounting frame 61, the other part is equidistantly provided with a plurality of vent holes 65, and the vent holes 65 correspond to the vent grooves 54, so that airflow can flow conveniently.

Referring to fig. 3, the heat dissipation portions 6 are provided in two, one of which extracts low-temperature air from the outside and guides the low-temperature air into the protective case 1, and the other of which extracts high-temperature air from the protective case 1 and guides the high-temperature air out, so that the air flows to realize rapid heat dissipation of the battery pack portion 8 during charging.

The control part 7 comprises a protective cover plate 71, the protective cover plate 71 is made of heat insulating materials, a control main board 72 is fixedly installed on the upper surface of the protective cover plate 71, a second protective screen plate 73 is bonded on the lower surface of the protective cover plate 71, and the second protective screen plate 73 is attached to the top end of the battery pack part 8.

The working principle is as follows:

referring to fig. 1 to 3, the apparatus is assembled as shown in fig. 1;

when the lithium battery pack main body 81 is charged, the control main board 72 monitors the temperature of the lithium battery pack main body 81 through the first temperature sensor 55 and the second temperature sensor 66, and when the temperature of the lithium battery pack main body 81 is higher than forty-five ℃, the control main board 72 starts the heat dissipation fans 62 of the two heat dissipation parts 6;

one group of the heat dissipation fans 62 draws low-temperature air (the low temperature is actually normal-temperature air in a natural state relative to the high temperature emitted by the lithium battery pack main body 81 during the charging process) from the outside through the corresponding heat dissipation window 3;

the low-temperature air is divided by the ceramic flow dividing plate 63, one part of the low-temperature air is directly blown to the lithium battery pack main body 81, the other part of the low-temperature air enters the ventilation groove 54 through the ventilation hole 65 and then is blown to the lithium battery pack main body 81 through the positioning net rack 53;

the other set of heat dissipation fans 62 extract the high temperature air that absorbs the temperature of the lithium battery pack main body 81, and exhaust the air through the corresponding heat dissipation windows 3.

Note: the series connection mode of the additional lithium battery 83 and the lithium battery pack main body 81, and the electrical connection mode between the control main board 72 and the first temperature sensor 55, the second temperature sensor 66, and the heat dissipation fan 62 are all the prior art means, and are not described in detail in the present application.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

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).