CN217217252U

CN217217252U - Closed battery pack with external metal heat dissipation block

Info

Publication number: CN217217252U
Application number: CN202220049430.2U
Authority: CN
Inventors: 马先鹏
Original assignee: Dongguan Jiahang Industry Co ltd
Current assignee: Dongguan Jiahang Industry Co ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-08-16
Anticipated expiration: 2032-01-10

Abstract

The utility model relates to the technical field of batteries, in particular to a closed battery pack with an external metal radiating block, which comprises a shell, a battery pack, a PCB (printed circuit board), a connecting terminal and a metal radiating block, wherein the battery pack is arranged in the shell, a radiating hole is formed in the shell, an interface socket is arranged at the rear end of the shell corresponding to the radiating hole, the metal radiating block is arranged on the radiating hole, the metal radiating block and the interface socket jointly cover the radiating hole, the PCB main circuit board is arranged in the shell at a position corresponding to the radiating hole, heat-conducting silica gel is arranged on the PCB main circuit board, and the heat-conducting silica gel is attached to the metal radiating block; the connecting terminal is arranged on the PCB main circuit board and is in butt joint fit with the interface socket; the overall design can reach the structure that does not have the louvre, makes the battery package be closed structure, can prevent steam, dust entering battery package in operating condition or off-working condition homoenergetic effectively.

Description

Closed battery pack with external metal heat dissipation block

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a closed battery package of external metal radiating block is related to.

Background

With the continuous mature development of battery technology, battery packs made of batteries are widely applied to various industries, and under the current society that the maturity and the popularization of electric tools are higher and higher, especially in some gardens and forestry, electric tools such as electric shears, electric saws, sugarcane shears and the like are manufactured to adopt the battery packs as power supply sources, so that the efficiency of garden work can be greatly improved; however, considering that the garden working environment is severe, in addition, the battery pack needs to dissipate heat during the operation process, if the traditional heat dissipation hole heat dissipation mode is adopted, a large amount of dust particles or moisture can enter the battery pack, and the battery pack is damaged; in order to solve the problem, the prior art proposes a battery pack for an electric tool, as described in application No. 202021164213.5, when the battery pack is in operation, two air ports are opened, and heat can be dissipated from the battery pack by an external fan; when the battery pack does not work, the two air ports are closed, so that water vapor and dust are prevented from entering the battery pack; however, the battery pack is still based on the heat dissipation holes, and the inside of the battery pack cannot be isolated from the outside under the working environment, and therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

A closed battery pack with an external metal heat dissipation block comprises a shell, a battery pack, a PCB (printed circuit board), a connecting terminal and a metal heat dissipation block, wherein the battery pack is installed inside the shell, a heat dissipation port is formed in the shell, an interface socket is arranged at the rear end of the shell, which corresponds to the heat dissipation port, the metal heat dissipation block is arranged on the heat dissipation port, the metal heat dissipation block and the interface socket jointly cover the heat dissipation port, the PCB main circuit board is installed inside the shell, which corresponds to the heat dissipation port, heat conduction silica gel is arranged on the PCB main circuit board, and the heat conduction silica gel is attached to the metal heat dissipation block; the connecting terminal is arranged on the PCB main circuit board and is in butt joint fit with the interface socket; the connecting terminal and the battery pack are electrically connected with the PCB main circuit board.

Preferably, the shell is provided with a connecting groove, the connecting groove extends out of the rear end of the shell, and the heat dissipation opening is formed in the middle of the connecting groove so that the metal heat dissipation block is placed in the connecting groove; the two sides of the connecting groove are respectively provided with the inserting strip, the connecting groove enables a structure capable of being inserted with the electric tool to be arranged between the two sides of the connecting groove and the two sides of the metal radiating block, and a clamping block used for clamping the electric tool is further arranged in front of the corresponding connecting groove on the shell.

Preferably, the two sides of the metal radiating block are respectively formed with an L-shaped sliding rail structure, two sides of the shell corresponding to the radiating port are respectively provided with a sliding groove structure extending out of the rear end of the shell, the metal radiating block is slidably connected with the sliding groove structure through the sliding rail structure, and the front end of the metal radiating block is in screw connection with the front end of the connecting groove.

Preferably, the upper end of the metal radiating block is provided with a plurality of radiating strips which are uniformly distributed.

Preferably, still be provided with the interface that charges that is used for charging for the group battery on PCB main circuit board, be provided with the groove that charges that is used for the interface that charges to see through on the metal casing.

Preferably, the front end of the housing is further provided with a power switch electrically connected with respect to the PCB main circuit board.

Preferably, the battery pack comprises a fixed frame, a plurality of sections of battery cells and a plurality of conducting strips, the fixed frame comprises two end fixing sleeves, the two end fixing sleeves are respectively provided with a plurality of sleeving holes matched with the two ends of the battery cells, and the two ends of the plurality of sections of battery cells are connected between the two end fixing sleeves through the sleeving holes; one end fixing sleeve is provided with a plurality of connecting male seats, the other end fixing sleeve is provided with a plurality of connecting female seats, and the two end fixing sleeves are fixedly connected through screws by the connecting male seats and the connecting female seats; the multiple conducting strips are arranged on the back-to-back surfaces of the two end fixing sleeves, the multiple battery cells are connected in series through the multiple conducting strips, and the two conducting strips are electrically connected to the PCB main circuit board as a positive and a negative two-stage respectively.

Preferably, the mount is still including the fixed cover in middle part, and the fixed cover in middle part is sheathe in and is provided with a plurality of perforation that are used for the cover at electric core middle part, and the fixed cover in middle part still is provided with a plurality of fixed through-holes, and the shaping has the connecting axle that is used for fixed through-hole that alternates on the public seat of connection.

Preferably, the back-to-back surfaces of the two end fixing sleeves are respectively provided with a PCB monitoring circuit board, the conductive sheet is formed with a monitoring pin electrically connected to the PCB monitoring circuit board, the PCB monitoring circuit board is further provided with a flexible flat cable terminal, and the PCB monitoring circuit board is electrically connected with the PCB main circuit board through the flexible flat cable terminal.

Preferably, the shell comprises a rear shell and a front cover, the rear shell and the front cover are fixedly covered, the connecting groove is formed in the upper end of the rear shell, the clamping block is arranged at the upper end of the front cover, and a handle structure is further formed in the upper end of the front cover.

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

the battery pack is of a closed structure by adopting a heat conduction mode, wherein a heat dissipation port is formed in the upper end of the shell, then a connecting terminal mainly generating heat and a PCB main circuit board are arranged at the position of the heat dissipation port, and then the heat dissipation port is covered by a metal heat dissipation block and an interface socket together;

in order to realize the monitoring of single section of electric core, be provided with PCB monitoring circuit board respectively on the fixed cover face back to back of two tip, on monitoring pin through on the conducting strip was connected to PCB monitoring circuit board with the monitoring signal of single section of electric core, according to monitoring pin on PCB monitoring circuit board wiring, then concentrate on the flexible flat cable terminal export PCB main circuit board, convenient operation equipment is difficult to connect wrong signal mouth like this.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

fig. 3 is a schematic structural diagram of a battery pack according to the present invention;

fig. 4 is a schematic structural view of the middle fixing frame of the present invention.

The reference numbers and designations in the drawings are as follows:

the connector comprises a shell 10, a battery pack 20, a PCB main circuit board 30, a metal heat dissipation block 40, a heat dissipation port 11, an interface socket 12, a connection groove 13, a fixture block 14, a sliding groove structure 15, a charging groove 16, a rear shell 17, a front cover 18, a handle structure 19, an electric core 21, a conducting strip 22, an end fixing sleeve 23, a sleeving hole 24, a connection male seat 25, a connection female seat 26, a middle fixing sleeve 27, a connection shaft 28, a connection terminal 31, heat conduction silica gel 32, a charging interface 33, a power switch 34, a PCB monitoring circuit board 35, a flexible flat cable terminal 36, a sliding rail structure 41, a heat dissipation strip 42, an insertion strip 131, a monitoring pin 221, a perforation 271 and a fixing through hole 272.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-4, in an embodiment of the present invention, an external metal heat dissipation block sealed battery pack includes a housing 10, a battery pack 20, a PCB main circuit board 30, a connection terminal 31, and a metal heat dissipation block 40, where the battery pack 20 is installed inside the housing 10, the housing 10 is provided with a heat dissipation port 11, the housing 10 is provided with an interface socket 12 at a rear end corresponding to the heat dissipation port 11, the metal heat dissipation block 40 is disposed on the heat dissipation port 11, and the metal heat dissipation block 40 and the interface socket 12 jointly cover the heat dissipation port 11, the PCB main circuit board 30 is installed inside the housing 10 at a position corresponding to the heat dissipation port 11, the PCB main circuit board 30 is provided with a heat conductive silica gel 32, and the heat conductive silica gel 32 is attached to the metal heat dissipation block 40; the connection terminal 31 is mounted on the PCB main circuit board 30, and the connection terminal 31 is butt-fitted to the interface socket 12; the connection terminals 31 and the battery pack 20 are electrically connected to the PCB main circuit board 30.

In the above technical scheme, a heat conduction mode is adopted, a heat dissipation port 11 is formed in the upper end of the shell 10, then the connecting terminal 31 which mainly generates heat and the PCB main circuit board 30 are arranged at the position of the heat dissipation port 11, then the heat dissipation port 11 is jointly covered by the metal heat dissipation block 40 and the interface socket 12, the PCB main circuit board 30 utilizes the heat conduction silica gel 32 to stick to the inner wall of the metal heat dissipation block 40 to conduct heat, and the heat is dissipated to the outside.

As further shown in fig. 1, for a closed battery pack applied to an electric tool, the closed battery pack is connected to the electric tool, and an embodiment is exemplified in structural design, the closed battery pack is mainly connected by a sliding clamping manner, specifically, a connecting groove 13 is provided on a housing 10, the connecting groove 13 extends out of a rear end of the housing 10, a heat dissipation opening 11 is provided in the middle of the connecting groove 13, so that a metal heat dissipation block 40 is disposed in the connecting groove 13; the two sides of the connecting groove 13 are respectively provided with an inserting strip 131, the connecting groove 13 enables a structure capable of inserting an electric tool to be arranged between the two sides of the metal radiating block 40 and the two sides of the connecting groove 13 through the arrangement of the inserting strip 131, and a clamping block 14 for clamping the electric tool is further arranged on the shell 10 corresponding to the front of the connecting groove 13; through this structural design, can also make metal radiating block 40 install the inside to electric tool, dispel the heat to the link of electric tool with closed battery package, help carrying out thermal unified conduction and heat dissipation to whole electric tool for electric tool can develop toward compacter direction in structural design.

As shown in fig. 1, for the connection and installation of the metal heat dissipation block 40, mainly, L-shaped sliding rail structures 41 are respectively formed on two sides of the metal heat dissipation block 40, sliding groove structures 15 extending out of the rear end of the housing 10 are respectively arranged on two sides of the housing 10 corresponding to the heat dissipation port 11, the metal heat dissipation block 40 is slidably connected with the sliding groove structures 15 through the sliding rail structures 41, and the front end of the metal heat dissipation block 40 is screwed with the front end of the connecting groove 13, so that the structure design is simple and the assembly is convenient; in addition, in order to enhance the heat dissipation effect of the metal heat dissipation block 40, a plurality of heat dissipation bars 42 are uniformly arranged at the upper end of the metal heat dissipation block 40.

As further shown in fig. 1, a charging interface 33 for charging the battery pack 20 is further disposed on the PCB main circuit board 30, and the metal housing 10 is provided with a charging slot 16 for allowing the charging interface 33 to penetrate out; the front end of the housing 10 is further provided with a power switch 34, and the power switch 34 is electrically connected to the PCB main circuit board 30.

As further shown in fig. 1, for the structural design of the battery pack 20, the battery pack 20 includes a fixing frame, a plurality of cell sections 21 and a plurality of conductive sheets 22, the fixing frame includes two end fixing sleeves 23, the two end fixing sleeves 23 are respectively provided with a plurality of sleeving holes 24 matching with two ends of the cell 21, and two ends of the cell sections 21 are connected between the two end fixing sleeves 23 through the sleeving holes 24; one of the end fixing sleeves 23 is formed with a plurality of connecting male seats 25, the other end fixing sleeve 23 is formed with a plurality of connecting female seats 26, and the two end fixing sleeves 23 are fixedly connected by screws through the connecting male seats 25 and the connecting female seats 26; the multiple conducting strips 22 are arranged on the back-to-back surfaces of the two end fixing sleeves 23, the multiple sections of the battery cells 21 are connected in series through the multiple conducting strips 22, and the two conducting strips 22 are electrically connected to the PCB main circuit board 30 as a positive stage and a negative stage respectively; in order to enhance the stability of the battery cell 21, the fixing frame further comprises a middle fixing sleeve 27, the middle fixing sleeve 27 is provided with a plurality of through holes 271 for being sleeved in the middle of the battery cell 21, the middle fixing sleeve 27 is also provided with a plurality of fixing through holes 272, and a connecting shaft 28 for fixedly inserting the fixing through holes 272 is formed on the connecting male seat 25; in addition, in order to realize the monitoring of the single cell 21, the opposite surfaces of the two end fixing sleeves 23 are respectively provided with a PCB monitoring circuit board 35, a monitoring pin 221 electrically connected to the PCB monitoring circuit board 35 is formed on the conducting strip 22, and a flexible flat cable terminal 36 is further arranged on the PCB monitoring circuit board 35, and the PCB monitoring circuit board 35 is electrically connected with the PCB main circuit board 30 through the flexible flat cable terminal 36; monitoring signal of single section of electricity core 21 is connected to PCB monitoring circuit board 35 through monitoring pin 221 on conducting strip 22 on, according to monitoring pin 221 on PCB monitoring circuit board 35 wiring, then concentrate on soft arranging wire terminal 36 and export PCB main circuit board 30 on, convenient operation equipment like this is difficult to connect wrong signal mouth.

As further shown in fig. 1, the housing 10 includes a rear shell 17 and a front cover 18, the rear shell 17 and the front cover 18 are fixedly covered, the connecting slot 13 is disposed at the upper end of the rear shell 17, the latch 14 is disposed at the upper end of the front cover 18, and a handle structure 19 is further formed at the upper end of the front cover 18.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A closed battery pack with an external metal radiating block is characterized by comprising a shell, a battery pack, a PCB main circuit board, a connecting terminal and a metal radiating block, wherein the battery pack is installed inside the shell, a radiating hole is formed in the shell, an interface socket is arranged at the back end of the shell, which corresponds to the radiating hole, the metal radiating block is arranged on the radiating hole, the metal radiating block and the interface socket jointly cover the radiating hole, the PCB main circuit board is installed inside the shell, which corresponds to the radiating hole, heat-conducting silica gel is arranged on the PCB main circuit board, and the heat-conducting silica gel is attached to the metal radiating block; the connecting terminal is arranged on the PCB main circuit board and is in butt joint fit with the interface socket; the connecting terminal and the battery pack are electrically connected with the PCB main circuit board.

2. The enclosed battery pack with the external metal heat dissipation block as recited in claim 1, wherein the housing has a connection groove extending out of the rear end of the housing, the heat dissipation opening is formed in the middle of the connection groove, so that the metal heat dissipation block is disposed in the connection groove; the two sides of the connecting groove are respectively provided with the inserting strip, the connecting groove enables a structure capable of being inserted with the electric tool to be arranged between the two sides of the connecting groove and the two sides of the metal radiating block, and a clamping block used for clamping the electric tool is further arranged in front of the corresponding connecting groove on the shell.

3. The enclosed battery pack with the external metal heat sink as claimed in claim 2, wherein the two sides of the metal heat sink are respectively formed with L-shaped sliding rail structures, the two sides of the housing corresponding to the heat dissipating opening are respectively provided with sliding groove structures extending out of the rear end of the housing, the metal heat sink is slidably connected with the sliding groove structures through the sliding rail structures, and the front end of the metal heat sink is screwed with the front ends of the connecting grooves.

4. The closed battery pack with the external metal radiating block according to any one of claims 1 to 3, wherein a plurality of radiating strips are uniformly arranged at the upper end of the metal radiating block.

5. The enclosed battery pack with the external metal heat sink as recited in claim 1, wherein the PCB board is further provided with a charging port for charging the battery pack, and the metal casing is provided with a charging slot for allowing the charging port to penetrate out.

6. The enclosed battery pack with the external metal heat sink as claimed in claim 1, wherein the front end of the housing is further provided with a power switch, and the power switch is electrically connected with the PCB main circuit board.

7. The enclosed battery pack with the external metal heat sink of claim 1, wherein the battery pack comprises a fixed frame, a plurality of battery cells and a plurality of conductive sheets, the fixed frame comprises two end fixing sleeves, the two end fixing sleeves are respectively provided with a plurality of sleeving holes matched with two ends of the battery cells, and two ends of the plurality of battery cells are connected between the two end fixing sleeves through the sleeving holes; one end fixing sleeve is provided with a plurality of connecting male seats, the other end fixing sleeve is provided with a plurality of connecting female seats, and the two end fixing sleeves are fixedly connected through screws by the connecting male seats and the connecting female seats; the multiple conducting strips are arranged on the back-to-back surfaces of the two end fixing sleeves, the multiple battery cells are connected in series through the multiple conducting strips, and the two conducting strips are electrically connected to the PCB main circuit board as a positive and a negative two-stage respectively.

8. The enclosed battery pack with the external metal heat sink as claimed in claim 7, wherein the fixing frame further comprises a middle fixing sleeve, the middle fixing sleeve is provided with a plurality of through holes for being sleeved on the middle portion of the battery core, the middle fixing sleeve is further provided with a plurality of fixing through holes, and the connecting male seat is formed with a connecting shaft for fixedly inserting the fixing through holes.

9. The battery pack as claimed in any one of claims 7 to 8, wherein the opposite sides of the two end fixing sleeves are respectively provided with a PCB monitoring circuit board, the conductive sheet is formed with a monitoring pin electrically connected to the PCB monitoring circuit board, and the PCB monitoring circuit board is further provided with a flexible flat cable terminal electrically connected to the PCB main circuit board through the flexible flat cable terminal.

10. The enclosed battery pack with the external metal heat dissipation block as recited in claim 2, wherein the housing comprises a rear case and a front cover, the rear case and the front cover are fixedly covered, the connection slots are disposed at the upper end of the rear case, the fixture block is disposed at the upper end of the front cover, and a handle structure is further molded at the upper end of the front cover.