CN216250939U

CN216250939U - Passive balancing device of heavy current

Info

Publication number: CN216250939U
Application number: CN202121102142.0U
Authority: CN
Inventors: 毛永强; 刘文朋; 王新宏; 刘天洪
Original assignee: Henan Puhang Electronic Equipment Co ltd
Current assignee: Henan Puhang Electronic Equipment Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-04-08
Anticipated expiration: 2031-05-21

Abstract

The utility model discloses a large-current passive balancing device which comprises a supporting mechanism for providing external support, an electric connection mechanism for switching series connection, parallel connection and voltage stabilization, and a bottom supporting mechanism for facilitating the whole moving device, wherein the electric connection mechanism is installed on the inner side of the supporting mechanism and is connected with the supporting mechanism through a locking mechanism, a power supply mechanism is arranged on the inner side of the electric connection mechanism, and the bottom supporting mechanism is installed at the lower end of the supporting mechanism. The utility model utilizes the cooperation of the power supply mechanism of the electric linkage mechanism, thereby rapidly switching the storage batteries between series connection and parallel connection, and independently controlling the connection mode of each storage battery according to requirements, thereby achieving the effect of balanced voltage stabilization.

Description

Passive balancing device of heavy current

Technical Field

The utility model relates to the field of battery equalization, in particular to a large-current passive equalization device.

Background

More and more people use lithium batteries or other batteries, a plurality of single batteries are connected in parallel to form a string, and a plurality of strings of batteries are connected in series to form a specific battery pack, so that the power of the single batteries is low, but the battery packs connected in series and parallel by the plurality of single batteries can be combined into high power, so that high voltage and high current can be realized, and the battery pack is used for driving high-power electric equipment, such as an electric bicycle, an express electric tricycle, a medium-sized logistics vehicle, an electric bus, an electric forklift, a large-sized energy storage cabinet and the like. Batteries require management and control to be safe: for many batteries, especially lithium batteries, each battery has a specific voltage range, and if the voltage range exceeds the specific voltage range, the battery may be damaged or even explode, so a battery management system is needed to manage the charging and discharging of the battery, and ensure that the voltage of each string of batteries in the battery pack is always kept within a specified safety range in the using process, the BMS generally comprises voltage detection of each battery string, temperature detection of individual strings, control of a charging and discharging main switch, and the like, and the battery pack needs to be equalized: due to the reasons of battery production technology, use and the like, different strings of batteries run for a long time, so that the voltages of the batteries of different strings are inconsistent, and the charging of the battery pack is only totally positive/totally negative, so that some strings are fully charged to the highest limit of the voltage of the batteries, some strings are not fully charged, the comprehensive capacity of the whole battery pack is reduced, and even the strings cannot be used and are scrapped, so that some methods are needed to be used, extra discharge is carried out on some strings with higher voltages, and the voltages of the strings and other strings tend to be consistent, and the method is the battery equalization.

At present in large-scale energy storage cabinet field, all concentrate the battery and put, then rigid connection battery, to the series connection of battery or parallelly connected direct fixed motionless, when later stage need improve and change, need dismantle the circuit again, caused inconveniently to because the inconvenient removal of large-scale energy storage cabinet, if directly adopt the universal wheel mode to support, can't guarantee certain stability and shock attenuation nature in the work at ordinary times.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving the above problems and providing a high current passive equalizing device.

The utility model realizes the purpose through the following technical scheme:

a high-current passive balancing device comprises a supporting mechanism for providing external support, an electric connection mechanism for switching series connection, parallel connection and voltage stabilization, and a bottom supporting mechanism for facilitating the whole moving device, wherein the electric connection mechanism is mounted on the inner side of the supporting mechanism and connected with the supporting mechanism through a locking mechanism;

the supporting mechanism comprises a fixed frame, placing mounting frames and an internal fixing frame, wherein the two placing mounting frames are arranged at the front end and the rear end of the inner side of the fixed frame, and the internal fixing frame is arranged between the placing mounting frames;

the electric coupler comprises a connecting socket, a voltage stabilizer, a matching socket and a serial socket, wherein the matching socket is arranged on the inner side of the placing and mounting frame, a matching groove for mounting the connecting socket is formed in the front end face of the matching socket, the serial socket and a parallel socket are arranged in the matching groove, the serial socket is matched with a connecting electric pole on the connecting socket, and the voltage stabilizer is arranged at the front end of the connecting socket;

the bottom supporting mechanism comprises supporting seats, moving wheels, lifting seats and first lifting rods, the four supporting seats are uniformly arranged at the lower end of the fixed frame, the moving wheels are arranged at the inner sides of the supporting seats, the two moving wheels are arranged at the lower end of one lifting seat, the first lifting rod is arranged at the inner side of the lifting seat, one end of the first lifting rod is connected with the second lifting rod, the other end of the first lifting rod is provided with a matching sliding block, a lifting screw rod is connected onto the matching sliding block, and the lifting screw rod penetrates through the lifting seat;

power supply mechanism includes control panel, battery, heating panel, radiator fan, the battery is installed the internal fixation frame is inboard, the battery upside is provided with control panel, the heating panel is installed between the battery, the terminal surface is all installed about the heating panel radiator fan, the electricity federation mechanism rear end is connected through interconnecting link the battery.

Preferably: the locking mechanism comprises a fixed plate, matching plates, locking steel balls and locking springs, the fixed plate is arranged on the inner side of the inner fixing frame, the matching plates are evenly arranged on the outer side surface of the connecting socket, the locking steel balls are arranged on the inner side of the fixed plate, the locking steel balls are arranged between the locking steel balls and the fixed plate, and first locking grooves are formed between the locking steel balls and the matching plates.

With the arrangement, when the connecting socket needs to be switched and installed, the connecting electric pole is aligned to the serial socket or the parallel socket on the inner side of the matching socket, and the connecting socket is pushed inwards, so that the matching plate is clamped on the inner side of the fixed plate, and at the moment, the locking steel balls are clamped into the first locking grooves on the matching plate by the potential energy of the locking springs, so that the connecting socket is fixed.

Preferably: the locking mechanism comprises a fixed plate, matching plates, locking elastic pieces and a hollow cavity, wherein the fixed plate is arranged on the inner side of the inner fixing frame, the four matching plates are uniformly arranged on the outer side surface of the connecting socket, the locking elastic pieces are arranged on the inner side of the fixed plate, the hollow cavity is formed between the locking elastic pieces and the fixed plate, and second locking grooves are formed between the locking elastic pieces and the matching plates.

With the arrangement, when the connecting socket needs to be switched and installed, the connecting electric pole is aligned to the serial socket or the parallel socket on the inner side of the matching socket, the connecting socket is pushed inwards, so that the matching board is clamped on the inner side of the fixing plate, the locking elastic sheet is clamped on the inner side of the second locking groove at the moment, the connecting socket is installed, and when the connecting socket needs to be disassembled, the edge on the outer side of the locking elastic sheet is pulled, so that the connecting socket is disassembled.

Preferably: the placing installation frame and the inner fixing frame are connected with the fixing frame through bolts.

So set up, place the installing frame and play the installation effect, the internal fixation frame is used for fixing the battery effect.

Preferably: the stabiliser is inlayed and is connected connect socket, the cooperation socket passes through bolted connection place the mounting bracket, the series connection socket connect socket is inlayed to the parallel connection socket cooperation socket, it passes through welded connection to connect the pole connect socket.

So set up, inlay the connection and guaranteed installation stability and can reach certain insulating effect.

Preferably: the supporting seat is connected with the fixed frame through bolts, and the moving wheel is connected with the lifting seat through bolts.

So set up, the supporting seat is used for supporting, it is used for the mobile device to remove the wheel.

Preferably: the first lifting rod is connected with the lifting seat in a sliding mode, the first lifting rod is connected with the second lifting rod and the fixed frame through a pin shaft, the first lifting rod is connected with the matching sliding block through welding, and the lifting screw is connected with the matching sliding block through threads.

According to the arrangement, the lifting screw is matched with the first lifting rod and the second lifting rod, so that the movable wheel can be stored and ejected, and the mode of the device is switched when the device is fixed.

Preferably: the heat dissipation plate is connected with the inner fixing frame through glue, the heat dissipation fan is connected with the heat dissipation plate through bolts, and the heat dissipation fan is made of aluminum.

So set up, the heating panel is used for the heat dissipation.

Preferably: the locking steel balls are connected with the fixing plate in a sliding mode, and the first locking groove is integrally formed in the matching plate.

So set up, the locking steel ball is used for cooperating thereby the locking of first locking groove the cooperation board.

Preferably: the locking spring plate and the hollow cavity are integrally formed on the fixing plate.

So set up, stability has been guaranteed to integrated into one piece.

Compared with the prior art, the utility model has the following beneficial effects:

1. the power supply mechanisms of the electric connection mechanisms are matched, so that the storage batteries can be switched between series connection and parallel connection quickly, and the connection mode of each storage battery can be independently controlled according to requirements, so that the effect of balancing and stabilizing voltage is achieved;

2. utilize supporting mechanism and bottom sprag mechanism cooperation, utilize the removal wheel that can lift to remove the mobile device wholly, and utilize the supporting seat to guarantee stability and shock attenuation nature when not using, improved the mobility and the stability of device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and 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 creative efforts.

Fig. 1 is a schematic diagram of a first structure of a large-current passive balancing device according to the present invention;

fig. 2 is a schematic diagram of a second structure of a large-current passive balancing apparatus according to the present invention;

FIG. 3 is a schematic view of an expanded structure of a bottom support mechanism of the large current passive balancing apparatus according to the present invention;

FIG. 4 is a schematic diagram of a bottom supporting mechanism of the large current passive balancing apparatus according to the present invention;

fig. 5 is a schematic view of a fitting socket mounting structure of a large-current passive balancing device according to the present invention;

fig. 6 is an exploded view of an electric linkage mechanism of the high-current passive balancing device of the utility model;

FIG. 7 is a schematic diagram of a locking steel ball structure of the large-current passive balancing device according to the present invention;

fig. 8 is a schematic diagram of a locking spring plate structure of the large-current passive balancing device according to the present invention.

The reference numerals are explained below:

1. a support mechanism; 2. an electrical coupling mechanism; 3. a bottom support mechanism; 4. a locking mechanism; 5. a power supply mechanism; 11. a fixed frame; 12. placing a mounting rack; 13. an inner fixing frame; 21. a connection socket; 22. a voltage regulator; 23. a mating socket; 24. a series socket; 25. a parallel socket; 26. connecting an electric pole; 31. a supporting seat; 32. a moving wheel; 33. a lifting seat; 34. a first lifting rod; 35. a second lifting rod; 36. matching with the sliding block; 37. a lifting screw; 41. a fixing plate; 42. a mating plate; 43. locking the steel balls; 44. a locking spring; 45. a first locking groove; 411. locking the elastic sheet; 412. a hollow cavity; 413. a second locking groove; 51. a control panel; 52. a storage battery; 53. a heat dissipation plate; 54. a heat radiation fan; 55. and connecting the circuit.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The utility model will be further described with reference to the accompanying drawings in which:

example 1

As shown in fig. 1-7, a large-current passive balancing device comprises a supporting mechanism 1 for providing external support, an electric connection mechanism 2 for switching series connection, parallel connection and voltage stabilization, and a bottom supporting mechanism 3 for facilitating the whole moving device, wherein the electric connection mechanism 2 is installed on the inner side of the supporting mechanism 1, the electric connection mechanism 2 is connected with the supporting mechanism 1 through a locking mechanism 4, a power supply mechanism 5 is arranged on the inner side of the electric connection mechanism 2, and the bottom supporting mechanism 3 is installed at the lower end of the supporting mechanism 1;

the supporting mechanism 1 comprises a fixed frame 11, two placing and mounting frames 12 and an inner fixing frame 13, wherein the front end and the rear end of the inner side of the fixed frame 11 are respectively provided with the two placing and mounting frames 12, and the inner fixing frame 13 is arranged between the placing and mounting frames 12;

the electric coupler mechanism 2 comprises a connecting socket 21, a voltage stabilizer 22, a matching socket 23 and a serial socket 24, wherein the matching socket 23 is arranged on the inner side of the mounting frame 12, a matching groove for mounting the connecting socket 21 is formed in the front end face of the matching socket 23, the serial socket 24 and a parallel socket 25 are arranged in the matching groove, the serial socket 24 is matched with a connecting pole 26 on the connecting socket 21, and the voltage stabilizer 22 is arranged at the front end of the connecting socket 21;

the bottom supporting mechanism 3 comprises supporting seats 31, moving wheels 32, lifting seats 33 and first lifting rods 34, wherein the four supporting seats 31 are uniformly installed at the lower end of the fixed frame 11, the moving wheels 32 are arranged on the inner sides of the supporting seats 31, the two moving wheels 32 are installed at the lower end of one lifting seat 33, the first lifting rod 34 is arranged on the inner side of the lifting seat 33, one end of the first lifting rod 34 is connected with the second lifting rod 35, the other end of the first lifting rod 34 is provided with a matching sliding block 36, a lifting screw 37 is connected onto the matching sliding block 36, and the lifting screw 37 penetrates through the lifting seat 33;

the power supply mechanism 5 comprises a control panel 51, a storage battery 52, a heat dissipation plate 53 and a heat dissipation fan 54, wherein the storage battery 52 is installed inside the inner fixing frame 13, the control panel 51 is arranged on the upper side of the storage battery 52, the heat dissipation plate 53 is installed between the storage batteries 52, the heat dissipation fan 54 is installed on the upper end face and the lower end face of the heat dissipation plate 53, and the rear end of the electric coupler mechanism 2 is connected with the storage battery 52 through a connecting line 55.

Preferably: the locking mechanism 4 comprises a fixed plate 41, a matching plate 42, locking steel balls 43 and locking springs 44, wherein the fixed plate 41 is installed on the inner side of the inner fixed frame 13, the four matching plates 42 are uniformly installed on the outer side surface of the connecting socket 21, two locking steel balls 43 are installed on the inner side of the fixed plate 41, the locking springs 44 are arranged between the locking steel balls 43 and the fixed plate 41, a first locking groove 45 is arranged between the locking steel balls 43 and the matching plates 42, when the connecting socket 21 needs to be switched and installed, the connecting electric pole 26 is aligned to the serial socket 24 or the parallel socket 25 on the inner side of the matching socket 23, the connecting socket 21 is pushed inwards, so that the matching plates 42 are clamped on the inner side of the fixed plate 41, and the locking steel balls 43 are clamped into the first locking groove 45 on the matching plate 42 under the potential energy of the locking springs 44, and the connecting socket 21 is fixed; the placing and mounting frame 12 and the internal fixing frame 13 are connected with the fixed frame 11 through bolts, the placing and mounting frame 12 plays a mounting role, and the internal fixing frame 13 is used for fixing the storage battery 52; the voltage stabilizer 22 is connected with the connecting socket 21 in an embedded mode, the mounting frame 12 is placed in a matched socket 23 through bolt connection, the serial socket 24 and the parallel socket 25 are connected with the matched socket 23 in an embedded mode, the connecting pole 26 is connected with the connecting socket 21 through welding, installation stability is guaranteed through the embedded connection, and a certain insulation effect can be achieved; the supporting seat 31 is connected with the fixed frame 11 through a bolt, the moving wheel 32 is connected with the lifting seat 33 through a bolt, the supporting seat 31 is used for supporting, and the moving wheel 32 is used for moving the device; the first lifting rod 34 is connected with the lifting seat 33 in a sliding mode, the first lifting rod 34 is connected with the second lifting rod 35 and the fixed frame 11 through a pin shaft, the first lifting rod 34 is connected with the matching slide block 36 through welding, the lifting screw 37 is connected with the matching slide block 36 through threads, and the lifting screw 37 is matched with the first lifting rod 34 and the second lifting rod 35, so that the moving wheel 32 can be accommodated and ejected out, and the mode of the device is switched when the device is fixed; the heat dissipation plate 53 is connected with the inner fixing frame 13 through glue, the heat dissipation fan 54 is connected with the heat dissipation plate 53 through bolts, the heat dissipation fan 54 is made of aluminum, and the heat dissipation plate 53 is used for heat dissipation; the locking steel balls 43 are connected with the fixing plate 41 in a sliding mode, the first locking grooves 45 are formed in the matching plate 42 in an integrated mode, and the locking steel balls 43 are used for matching with the first locking grooves 45 so as to lock the matching plate 42; locking shell fragment 411, empty core chamber 412 integrated into one piece have guaranteed stability in fixed plate 41.

Example 2

As shown in fig. 8, the present embodiment is different from embodiment 1 in that:

locking mechanism 4 includes fixed plate 41, cooperation board 42, locking shell fragment 411, hollow chamber 412, mount 13 is inboard including fixed plate 41 installs, four cooperation boards 42 are evenly installed at connection socket 21 lateral surface, locking shell fragment 411 is installed to fixed plate 41 inboard, be provided with hollow chamber 412 between locking shell fragment 411 and the fixed plate 41, be provided with second locking groove 413 between locking shell fragment 411 and the cooperation board 42, when needs switch over and erection joint socket 21, will connect pole 26 and aim at the inboard series connection socket 24 of cooperation socket 23 or parallel connection socket 25, will connect socket 21 and inwards promote, thereby make cooperation board 42 block in fixed plate 41 inboard, this moment locking shell fragment 411 block is inboard in second locking groove 413, thereby accomplish the installation of connection socket 21, when needs dismantle, pull the edge in the locking shell fragment 411 outside, thereby lift off connection socket 21.

The working principle is as follows: the number of the storage batteries 52 which need to be connected in parallel and in series is selected according to a needed working mode, so that the connection socket 21 is adjusted and installed, when the connection socket 21 needs to be switched and installed, the connection electric pole 26 is aligned to the serial socket 24 or the parallel socket 25 on the inner side of the matching socket 23, the connection socket 21 is pushed inwards, the matching plate 42 is clamped on the inner side of the fixing plate 41, the locking steel ball 43 is clamped into the first locking groove 45 on the matching plate 42 under the potential energy of the locking spring 44, the connection socket 21 is fixed, the starting device utilizes the storage battery 52 to supply power and simultaneously utilizes the voltage stabilizer 22 to stabilize, meanwhile, the heat dissipation plate 53 and the heat dissipation fan 54 are utilized to dissipate heat of the storage batteries 52, when the device does not need to be moved, the lifting screw 37 is rotated, the first lifting rod 34 and the second lifting rod 35 jack up the whole device, and the device is convenient to move.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. A kind of great passive equalizer of current, characterized by that: the mobile device comprises a supporting mechanism (1) for providing external support, an electric connection mechanism (2) for switching series connection, parallel connection and voltage stabilization, and a bottom supporting mechanism (3) for facilitating the whole mobile device, wherein the electric connection mechanism (2) is installed on the inner side of the supporting mechanism (1), the electric connection mechanism (2) is connected with the supporting mechanism (1) through a locking mechanism (4), a power supply mechanism (5) is arranged on the inner side of the electric connection mechanism (2), and the bottom supporting mechanism (3) is installed at the lower end of the supporting mechanism (1);

the supporting mechanism (1) comprises a fixed frame (11), placing mounting frames (12) and an internal fixing frame (13), wherein the front end and the rear end of the inner side of the fixed frame (11) are respectively provided with two placing mounting frames (12), and the internal fixing frame (13) is arranged between the placing mounting frames (12);

the electric coupler mechanism (2) comprises a connecting socket (21), a voltage stabilizer (22), a matching socket (23) and a serial socket (24), wherein the matching socket (23) is installed on the inner side of the placing and mounting frame (12), a matching groove for installing the connecting socket (21) is formed in the front end face of the matching socket (23), the serial socket (24) and a parallel socket (25) are arranged in the matching groove, the serial socket (24) is matched with a connecting pole (26) on the connecting socket (21), and the voltage stabilizer (22) is installed at the front end of the connecting socket (21);

the bottom supporting mechanism (3) comprises supporting seats (31), moving wheels (32), lifting seats (33) and first lifting rods (34), the four supporting seats (31) are uniformly installed at the lower end of the fixed frame (11), the moving wheels (32) are arranged on the inner sides of the supporting seats (31), two moving wheels (32) are installed at the lower end of one lifting seat (33), the first lifting rod (34) is arranged on the inner side of the lifting seat (33), one end of the first lifting rod (34) is connected with the second lifting rod (35), the other end of the first lifting rod (34) is provided with a matching sliding block (36), a lifting screw rod (37) is connected onto the matching sliding block (36), and the lifting screw rod (37) penetrates through the lifting seat (33);

power supply mechanism (5) are including control panel (51), battery (52), heating panel (53), radiator fan (54), battery (52) are installed internal fixation frame (13) are inboard, battery (52) upside is provided with control panel (51), radiator panel (53) are installed between battery (52), the terminal surface is all installed about radiator panel (53) radiator fan (54), coupling mechanism (2) rear end passes through interconnecting link (55) and connects battery (52).

2. A high current passive equalizing device according to claim 1, wherein: locking mechanism (4) are including fixed plate (41), cooperation board (42), locking steel ball (43), locking spring (44), fixed plate (41) are installed internal fixation frame (13) are inboard, four cooperation board (42) are evenly installed connect socket (21) lateral surface, two are installed to fixed plate (41) inboard locking steel ball (43), locking steel ball (43) with be provided with between fixed plate (41) locking spring (44), locking steel ball (43) with be provided with first locking groove (45) between cooperation board (42).

3. A high current passive equalizing device according to claim 1, wherein: locking mechanism (4) are including fixed plate (41), cooperation board (42), locking shell fragment (411), empty core chamber (412), fixed plate (41) are installed internal fixation frame (13) are inboard, four cooperation board (42) are evenly installed connect socket (21) lateral surface, install fixed plate (41) inboard locking shell fragment (411), locking shell fragment (411) with be provided with between fixed plate (41) empty core chamber (412), locking shell fragment (411) with be provided with second locking groove (413) between cooperation board (42).

4. A high current passive equalizing device according to claim 1, wherein: the placing installation frame (12) and the inner fixing frame (13) are connected with the fixed frame (11) through bolts.

5. A high current passive equalizing device according to claim 1, wherein: stabiliser (22) is inlayed and is connected connect socket (21), cooperation socket (23) are through bolted connection place mounting bracket (12), series connection socket (24) connect socket in parallel (25) are inlayed and are connected cooperation socket (23), connect pole (26) through welded connection connect socket (21).

6. A high current passive equalizing device according to claim 1, wherein: the supporting seat (31) is connected with the fixed frame (11) through a bolt, and the moving wheel (32) is connected with the lifting seat (33) through a bolt.

7. A high current passive equalizing device according to claim 1, wherein: first lifter (34) sliding connection lift seat (33), first lifter (34) are through round pin hub connection second lifter (35) fixed frame (11), first lifter (34) are through welded connection cooperation slider (36), lifting screw (37) are through threaded connection cooperation slider (36).

8. A high current passive equalizing device according to claim 1, wherein: the heat dissipation plate (53) is connected with the inner fixing frame (13) through glue, the heat dissipation fan (54) is connected with the heat dissipation plate (53) through bolts, and the heat dissipation fan (54) is made of aluminum.

9. A high current passive equalizing device according to claim 2, wherein: the locking steel balls (43) are connected with the fixing plate (41) in a sliding mode, and the first locking groove (45) is integrally formed in the matching plate (42).

10. A high current passive equalization device as claimed in claim 3, wherein: the locking elastic sheet (411) and the hollow cavity (412) are integrally formed on the fixing plate (41).