CN116507017B

CN116507017B - Safe energy storage battery pack BMS management system

Info

Publication number: CN116507017B
Application number: CN202310745199.XA
Authority: CN
Inventors: 张红刚; 叶志开; 李继先
Original assignee: Shenzhen Baiqiancheng Electronic Co ltd
Current assignee: Shenzhen Baiqiancheng Electronic Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-11-24
Anticipated expiration: 2043-06-25
Also published as: CN116507017A

Abstract

The invention relates to the technical field of battery related accessories, in particular to a safe energy storage battery pack BMS management system, which comprises an outer shell, a BMS circuit board, a heat dissipation assembly and a connection assembly, wherein the BMS circuit board is arranged on the outer shell; the heat dissipation assembly comprises a fixed cover, a plurality of heat conduction copper pipes are arranged in the fixed cover, heat conduction plates are arranged at two ends of each heat conduction copper pipe, a temperature sensor is arranged at the top of each heat conduction plate, and a connecting copper pipe is arranged between the plurality of heat conduction copper pipes, so that fixed-point heat dissipation of assembly and splicing of the multi-layer outer shell is realized, the heat dissipation efficiency is high, the heat dissipation effect is good, meanwhile, when the temperature of the outer shell rises, the gap between two adjacent outer shells is correspondingly increased, the heat dissipation efficiency and the heat dissipation effect are further improved, and damage to an internal structure caused by overlarge expansion of a BMS circuit board is avoided; meanwhile, when the gap between the adjacent outer shells is increased, the circulation rate of heat conduction oil between the adjacent extension copper pipes can be correspondingly adjusted, the adaptability is stronger, the stability is higher, and the fixed-point cooling effect is better.

Description

Safe energy storage battery pack BMS management system

Technical Field

The invention relates to the technical field of battery related accessories, in particular to a safe energy storage battery pack BMS management system.

Background

The BMS battery system is commonly called as battery nurse or battery manager, and mainly aims at intelligent management and maintenance of each battery unit, overcharge and overdischarge of a battery are prevented, the service life of the battery is prolonged, the state of the battery is monitored, the BMS battery system unit comprises a BMS battery management system, a control module, a display module, a wireless communication module, electric equipment, a battery pack for supplying power to the electric equipment and an acquisition module for acquiring battery information of the battery pack, the BMS battery management system is respectively connected with the wireless communication module and the display module through communication interfaces, the output end of the acquisition module is connected with the input end of the BMS battery management system, the output end of the BMS battery management system is connected with the input end of the control module, the control module is respectively connected with the battery pack and the electric equipment, and the BMS battery management system is connected with a Server through the wireless communication module.

Publication No. 2019108646039 provides a battery pack comprising a plurality of battery cells and a rigid printed circuit board electrically connected to each battery cell and extending across the plurality of battery cells, wherein the rigid PCB comprises a bus for electrically connecting the plurality of battery cells to each other and a battery management system for controlling charge/discharge operations of the plurality of battery cells; in the prior art, the battery pack and the BMS management system are arranged in a built-in integrated manner and are arranged in the same box body, so that the inconvenience of capacity increase and battery BMS damage and replacement is caused.

Above-mentioned technical scheme is although can realize group battery BMS's parallelly connected dilatation, however, group battery BMS's heat dispersion can receive its parallelly connected influence to be difficult to guarantee group battery BMS's normal work, simultaneously, multiunit battery BMS need use extra connecting piece to connect fixedly in parallelly connected dilatation in-process, is unfavorable for the going on of dilatation work.

Meanwhile, when the BMS circuit boards are spliced and cooled, due to the fact that generated heat can move upwards, the heat inside the BMS circuit boards at different heights is different, if only a single cooling component is used for cooling, the problems of low cooling efficiency, poor fixed-point cooling effect and the like are caused.

And along with the continuous work of BMS circuit board, the inside temperature of shell body constantly risees, and BMS circuit board volume can take place to expand, if the shell body still carries out fixed joint with the help of coupling assembling this moment, not only can reduce the inside radiating efficiency of shell body, the BMS circuit board under the high temperature environment takes place to take place the mutual extrusion deformation after the volume expansion simultaneously to influence its normal use, and the even better can cause the damage explosion of BMS circuit board, thereby appear great safety and economic loss.

Accordingly, it is necessary to invent a safe energy storage battery pack BMS management system to solve the above problems.

Disclosure of Invention

The present invention is directed to a safe management system for an energy storage battery pack BMS to solve the above-mentioned problems of the related art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a safe energy storage battery pack BMS management system comprises an outer shell, a BMS circuit board, a heat dissipation assembly and a connection assembly;

the heat dissipation assembly comprises a fixed cover, a plurality of heat conduction copper pipes are arranged in the fixed cover, heat conduction plates are arranged at two ends of each heat conduction copper pipe, a temperature sensor is arranged at the top of each heat conduction plate, a plurality of connection copper pipes are arranged between the heat conduction copper pipes, an extension copper pipe is arranged in the middle of each connection copper pipe, an annular seat is arranged at the top end of the inner part of each extension copper pipe, an inserted link is arranged in the inner part of each annular seat in a penetrating manner, wedge-shaped arc grooves are formed in the outer side of each inserted link in a surrounding manner, a fixed pipe is arranged at the bottom end of each extension copper pipe, a fixing seat is connected to the bottom of each fixed pipe in a sliding manner through a hinging assembly, a movable rod is arranged in the inner part of each fixing seat in a penetrating manner, and wedge-shaped communication grooves with a plurality of arc structures are formed in the outer side of each movable rod in a surrounding manner;

the connecting assembly comprises a fixed frame, a chute is formed in the top end of the inner side wall of the fixed frame, a hydraulic push rod is arranged at the inner bottom of the chute, a slide block is arranged at the top of the hydraulic push rod, a slide rail is arranged on one side of the slide block, a slide seat is arranged on the inner side of the slide rail, and a limiting block is arranged at one end of the slide seat.

The device detects the internal temperature of the outer shells at different positions through the temperature sensor, correspondingly adjusts the gap between the adjacent outer shells, not only realizes fixed-point heat dissipation, but also avoids damage caused by volume expansion of the BMS circuit board in a high-temperature environment; meanwhile, the circulation rate of heat conduction oil between the adjacent extension copper pipes can be correspondingly adjusted, and the fixed-point heat dissipation efficiency and the heat dissipation effect are improved.

Preferably, the BMS circuit board is fixedly arranged in the outer shell, two heat dissipation assemblies are arranged, the two heat dissipation assemblies are respectively and fixedly arranged on two sides of the outer shell, four connection assemblies are arranged, and the four connection assemblies are respectively and fixedly arranged at four corners of the outer side wall of the outer shell; the structures are mutually matched to realize fixed-point heat dissipation.

Preferably, the fixed cover is fixedly arranged on the outer side of the outer shell, both sides of the fixed cover are respectively provided with an inclined structure, the heat conduction copper pipe is provided with a structure, the heat conduction plate is arranged in the outer shell, and the lower surface of the heat conduction plate is attached to the upper surface of the BMS circuit board; the heat conducting plate realizes heat conducting performance.

Preferably, the top end of the inserted link is provided with a sealing block, the diameter of the wedge-shaped arc groove gradually increases from the end of the sealing block to the other end, a spring is arranged between the sealing block and the annular seat, the outer side of the sealing block is provided with a sealing seat with an annular structure, the sealing seat is fixedly arranged at the top end of the extension copper pipe, the top end of the movable link is provided with a sealing gasket, the bottom end of the movable link is provided with a pressing block, a spring is arranged between the pressing block and the fixed seat, and the diameter of the wedge-shaped communication groove gradually increases from the pressing block end to the other end; the sealing block and the sealing seat are matched with each other to realize sealing performance.

Preferably, the outer side of the heat conduction copper pipe is provided with heat conduction fins, the heat conduction fins are of an inclined structure, the middle parts of the heat conduction fins are provided with a plurality of heat conduction holes in a penetrating mode, both ends of the fixed cover are provided with sealing plates, and the middle parts of the sealing plates are provided with round grooves matched with the extension copper pipe in a penetrating mode; the heat dissipation efficiency is further improved through the arrangement of the heat conduction fins.

Preferably, the two sides of the fixed cover are respectively provided with an exhaust fan in a penetrating way, the exhaust fans are arranged on inclined surfaces at the outer sides of the fixed cover, the rotation directions of the exhaust fans at the two sides of the fixed cover are opposite, the top end of the outer side of the extension copper pipe is provided with external threads, the outer side of the fixed pipe is sleeved with a connecting sleeve, and the inner side of the connecting sleeve is provided with internal threads matched with the external threads; the setting of air draft fan improves radiating efficiency.

Preferably, the hinge assembly comprises an inner cavity, a piston block is slidably connected in the inner cavity, the bottom of the extension copper pipe penetrates through the top of the fixed pipe to extend into the inner cavity and is fixedly connected with the top of the piston block, a plurality of groups of through holes are uniformly arranged on the inner wall of the fixed pipe in an array manner, a fulcrum is arranged at the inner bottom of each through hole, a damping hinge rod is arranged at the top of each fulcrum, one end, close to the extension copper pipe, of each damping hinge rod is hinged with the side wall of the extension copper pipe, an inner sleeve is hinged at one end, far away from the extension copper pipe, of each damping hinge rod, and the bottom of each inner sleeve is fixedly connected with the top of the fixed seat; the arrangement of the hinge assembly realizes that when the extension copper pipe moves upwards, the fixing seat moves downwards, so that the flow velocity of heat conduction oil in the adjacent extension copper pipe is improved.

Preferably, damping telescopic structures are arranged at two ends of the damping hinging rod, which are positioned at the supporting points, the piston blocks are in sealing sliding connection with the inner cavity, the height of the inner sleeve is larger than the height value of the through hole, a plurality of groups of matching blocks are uniformly arranged on the outer wall of the inner sleeve in an array manner, a plurality of groups of matching grooves are uniformly arranged on the inner wall of the fixed pipe in an array manner, the matching grooves are in sealing sliding connection with the matching blocks, and the outer wall of the inner sleeve is in sealing sliding connection with the inner wall of the fixed pipe; therefore, the mechanisms are mutually matched to realize the sealing sliding of the inner sleeve and the fixed tube.

Preferably, the fixed frame is fixedly arranged on the outer side of the outer shell, a spring is arranged between the limiting block and the sliding block, a clamping block is arranged at the top end of the limiting block, a clamping groove is formed in the bottom end of the inner side wall of the fixed frame, and the clamping groove is matched with the clamping block; thereby improving the stability of sliding clamping.

Preferably, a square groove is formed in the top end of the outer side wall of the fixed frame in a penetrating manner, a movable block is arranged in the square groove in a penetrating manner, and the movable block is fixedly arranged on the outer side of the limiting block; the movable block is arranged to improve the stability of movable clamping.

The invention has the technical effects and advantages that:

1. according to the invention, the shell body is arranged, the BMS circuit board is arranged in the shell body, intelligent management of the battery pack can be realized by the BMS circuit board, the heat dissipation assemblies are arranged on two sides of the shell body, a plurality of shell bodies can complete parallel capacity expansion of a plurality of groups of BMSs in a vertically stacked mode, and at the moment, the heat dissipation assemblies can ensure heat dissipation of the BMS circuit board in the shell body, so that the heat dissipation effect of the device can be prevented from being influenced by the parallel capacity expansion, and the capacity expansion of the battery pack BMS can be realized while the stable operation of the device is ensured.

2. According to the invention, the heat radiating assembly is arranged and comprises the heat conducting copper pipes and the heat conducting plates, the heat conducting plates can be attached to the BMS circuit board so as to realize heat transmission and guide, the connecting copper pipes are arranged among the plurality of heat conducting copper pipes, the middle parts of the connecting copper pipes are provided with the extension copper pipes, when the plurality of battery pack BMSs are subjected to parallel capacity expansion, the extension copper pipes in the heat radiating assemblies on the two adjacent battery pack BMSs can be connected end to end, so that synchronous heat radiation of the plurality of battery pack BMSs can be realized, and further, the heat radiating effect of the battery pack BMS positioned on the inner side can be prevented from being influenced by stacking.

3. According to the invention, the plurality of connecting assemblies are arranged, and are respectively arranged at the four corners of the outer side of the outer shell, so that when the plurality of battery pack BMSs are subjected to parallel capacity expansion, the connecting assemblies on the two adjacent battery pack BMSs can be mutually spliced, thereby facilitating the rapid splicing of the device and further facilitating the capacity expansion of the device.

4. According to the invention, through arranging the connecting assembly, the device not only realizes fixed-point heat dissipation of assembling and splicing of the multi-layer outer shell, has high heat dissipation efficiency and good heat dissipation effect, but also correspondingly increases the gap between two adjacent outer shells when the temperature of the outer shells is increased, so that the heat dissipation efficiency and the heat dissipation effect are further improved, and the damage of an internal structure caused by overlarge expansion of a BMS circuit board is avoided; meanwhile, when the gap between the adjacent outer shells is increased, the circulation rate of heat conduction oil between the adjacent extension copper pipes can be correspondingly adjusted, the adaptability is stronger, the stability is higher, and the fixed-point cooling effect is better.

Drawings

Fig. 1 is a schematic diagram of a stacked state of an overall structure according to the present invention.

Fig. 2 is a schematic diagram of the overall structure of the present invention.

Fig. 3 is a schematic view of the structure of the outer casing of the present invention.

Fig. 4 is a schematic top view of the outer housing structure of the present invention.

Fig. 5 is a schematic structural diagram of a heat dissipating assembly according to the present invention.

Fig. 6 is a schematic view of the structure of the heat conduction copper pipe of the present invention.

Fig. 7 is a schematic view of a slider structure according to the present invention.

Fig. 8 is a schematic cross-sectional view of a splice state of two connection assemblies of the present invention.

Figure 9 is a schematic cross-sectional view of an extended copper tube structure of the present invention.

Fig. 10 is an enlarged schematic view of the structure of fig. 9 a according to the present invention.

Fig. 11 is an enlarged schematic view of the structure B in fig. 9 according to the present invention.

Figure 12 is a schematic cross-sectional view of a splice location of two extension copper tubing in accordance with a second embodiment of the present invention.

Fig. 13 is an enlarged view of fig. 12C according to a second embodiment of the present invention.

Fig. 14 is a schematic diagram of a first portion of a first circuit according to a third embodiment of the invention.

Fig. 15 is a schematic diagram of a second portion of the first circuit in a third embodiment of the invention.

Fig. 16 is a schematic diagram of a third portion of the first circuit in a third embodiment of the invention.

Fig. 17 is a schematic diagram of a fourth portion of the first circuit in the third embodiment of the invention.

Fig. 18 is a schematic diagram of a fifth portion of the first circuit in the third embodiment of the invention.

Fig. 19 is a schematic diagram of a first portion of a second circuit according to a third embodiment of the invention.

Fig. 20 is a schematic diagram of a second portion of a second circuit according to a third embodiment of the invention.

Fig. 21 is a schematic diagram of a third portion of a second circuit according to a third embodiment of the invention.

Fig. 22 is a schematic diagram of a fourth portion of the second circuit in the third embodiment of the invention.

Fig. 23 is a schematic diagram of a fifth portion of the second circuit according to the third embodiment of the invention.

In the figure: 1. an outer housing; 2. BMS circuit board; 3. a heat dissipation assembly; 4. a connection assembly; 301. a fixed cover; 302. a heat conducting copper pipe; 303. a heat conductive plate; 304. connecting copper pipes; 305. extending a copper pipe; 306. an annular seat; 307. a rod; 308. a wedge-shaped arc-shaped groove; 309. a sealing block; 310. a sealing seat; 311. an external thread; 312. a fixed tube; 313. connecting sleeves; 314. a fixing seat; 315. a movable rod; 316. a wedge-shaped communication groove; 317. a sealing gasket; 318. briquetting; 319. a heat conduction fin; 320. a heat conduction hole; 321. an exhaust fan; 322. an elastic sealing plate; 323. a piston block; 324. an inner sleeve; 325. a through hole; 326. a fulcrum; 327. damping hinge rod; 328. an inner cavity; 401. a fixed frame; 402. a chute; 403. a slide block; 404. a slide rail; 405. a slide; 406. a limiting block; 407. a clamping block; 408. a clamping groove; 409. a square groove; 410. a movable block; 411. and a hydraulic push rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

First embodiment

The invention provides a safe energy storage battery pack BMS management system as shown in fig. 1-11, which comprises an outer shell 1, a BMS circuit board 2, heat dissipation assemblies 3 and connection assemblies 4, wherein the BMS circuit board 2 is fixedly arranged in the outer shell 1, the heat dissipation assemblies 3 are two, the two heat dissipation assemblies 3 are respectively fixedly arranged on two sides of the outer shell 1, the connection assemblies 4 are four, the four connection assemblies 4 are respectively fixedly arranged at four corners of the outer side wall of the outer shell 1, the outer shell 1 protects the internal structure, the heat dissipation assemblies 3 dissipate heat in the outer shell 1, and the connection assemblies 4 realize splicing of a plurality of groups of structures.

The heat dissipation assembly 3 comprises a fixed cover 301, the fixed cover 301 is fixedly arranged on the outer side of the outer shell 1, two sides of the fixed cover 301 are both provided with inclined structures, a plurality of heat conduction copper pipes 302 are arranged in the fixed cover 301, the heat conduction copper pipes 302 are arranged into -shaped structures, heat conduction plates 303 are arranged at two ends of the heat conduction copper pipes 302, the heat conduction plates 303 are arranged in the outer shell 1, temperature sensors are arranged at the tops of the heat conduction plates 303 and are used for detecting temperature values in the outer shell 1, the lower surfaces of the heat conduction plates 303 are attached to the upper surface of the BMS circuit board 2, connecting copper pipes 304 are arranged between the plurality of heat conduction copper pipes 302, extension copper pipes 305 are arranged in the middle of the connecting copper pipes 304, heat conduction oil is communicated in the heat conduction copper pipes 302, and used for conducting heat in transmission of the inner structure of the outer shell 1, and therefore heat dissipation performance of the device is improved.

The inside top of extension copper pipe 305 is equipped with annular seat 306, the inside of annular seat 306 runs through and is equipped with inserted bar 307, wedge arc wall 308 has been seted up around the outside of inserted bar 307, the top of inserted bar 307 is equipped with sealing block 309, the diameter of wedge arc wall 308 increases gradually along sealing block 309 end to the other end, and be equipped with the spring between sealing block 309 and the annular seat 306, sealing block 309's the outside is equipped with annular structure's sealing seat 310, and sealing seat 310 is fixed to be set up in the top of extension copper pipe 305, sealing block 309 is compressed tightly in sealing seat 310's inboard under the effect of spring, thereby can realize the seal to extension copper pipe 305.

And, the outside top of extension copper pipe 305 is equipped with external screw thread 311, and the bottom of extension copper pipe 305 is equipped with fixed pipe 312, and the outside of fixed pipe 312 has cup jointed adapter sleeve 313, and the inboard of adapter sleeve 313 is equipped with the internal thread with external screw thread 311 looks adaptation, and adapter sleeve 313 cooperates with external screw thread 311, can realize the connection locking between two extension copper pipes 305.

Moreover, fixed pipe 312's bottom has fixing base 314 through articulated assembly sliding connection, the inside of fixing base 314 runs through and is equipped with movable rod 315, and movable rod 315's the outside is encircleed the wedge intercommunication groove 316 of seting up a plurality of arc structures, movable rod 315's top is equipped with sealed pad 317, movable rod 315's bottom is equipped with briquetting 318, the diameter of wedge intercommunication groove 316 is by briquetting 318 end to the other end increase gradually, and be equipped with the spring between briquetting 318 and the fixing base 314, the spring can exert effort to briquetting 318, make briquetting 318 drive movable rod 315 and sealed pad 317 towards the direction motion of keeping away from extension copper pipe 305, and then make sealed pad 317 can seal the one end of extension copper pipe 305.

Meanwhile, the heat conduction fins 319 are arranged on the outer side of the heat conduction copper pipe 302, the heat conduction fins 319 are arranged to be of an inclined structure, a plurality of heat conduction holes 320 are formed in the middle of the heat conduction fins 319 in a penetrating mode, the heat conduction holes 320 are arranged to enable the contact area between the heat conduction fins 319 and air to be improved, and therefore the heat dissipation effect of the heat conduction fins 319 can be improved.

The fixed cover 301 both sides all run through and are equipped with air extraction fan 321, and air extraction fan 321 sets up in the inclined plane in the fixed cover 301 outside, and the air extraction fan 321 of fixed cover 301 both sides rotates the opposite direction, and a set of air extraction fan 321 can be with the air extraction of external world to fixed cover 301 in, and another set of air extraction fan 321 can be with the air extraction in the fixed cover 301, so far the inside and outside air of fixed cover 301 can realize the circulation, and the air can take away the heat on the heat conduction fin 319 at the circulation in-process to can realize cooling to the heat dissipation of BMS circuit board 2.

The two ends of the fixed cover 301 are both provided with the elastic sealing plates 322, the middle part of each elastic sealing plate 322 is provided with a circular groove matched with the extending copper pipe 305 in a penetrating way, and the elastic sealing plates 322 can seal the fixed cover 301, so that the heat dissipation assembly 3 can be protected.

The connecting assembly 4 comprises a fixed frame 401, the fixed frame 401 is fixedly arranged on the outer side of the outer shell 1, a sliding groove 402 is formed in the top end of the inner side wall of the fixed frame 401, a hydraulic push rod 411 is arranged at the inner bottom of the sliding groove 402, a sliding block 403 is arranged at the top of the hydraulic push rod 411, a sliding rail 404 is arranged on one side of the sliding block 403, a sliding seat 405 is arranged on the inner side of the sliding rail 404, the sliding rail 404 is matched with the sliding seat 405, the sliding block 403 is driven to move up and down inside the sliding groove 402 by means of the hydraulic push rod 411, and therefore a limiting block 406 can move up and down.

One end of the sliding seat 405 is provided with a limiting block 406, and a spring is arranged between the limiting block 406 and the sliding block 403, and the limiting block 406 is subjected to outward acting force by the aid of the spring, so that the clamping block 407 can be inserted into the clamping groove 408.

And, the top of stopper 406 is equipped with fixture block 407, and draw-in groove 408 has been seted up to the inside wall bottom of fixed frame 401, and draw-in groove 408 and fixture block 407 looks adaptation, and fixture block 407 can insert in the draw-in groove 408 for the position between stopper 406 and the fixed frame 401 is fixed, thereby makes the position between two sets of shell body 1 fixed.

Moreover, the top end of the outer side wall of the fixed frame 401 is provided with a square groove 409 in a penetrating manner, a movable block 410 is arranged in the square groove 409 in a penetrating manner, the movable block 410 is fixedly arranged on the outer side of the limiting block 406, and the position of the limiting block 406 is convenient for a user to adjust due to the arrangement of the movable block 410.

When the battery pack is used, the plurality of outer shells 1 can be mutually spliced, the plurality of BMS circuit boards 2 can be mutually connected in parallel through the guide and are respectively connected with corresponding battery pack circuits, the BMS circuit boards 2 can realize intelligent control of the battery packs, in the working process of the BMS circuit boards 2, the heat dissipation assembly 3 can realize heat dissipation treatment of the BMS circuit boards 2 so as to avoid temperature accumulation from influencing the normal work of the BMS circuit boards 2, and the plurality of outer shells 1 can be mutually spliced through the connecting assembly 4 so as to facilitate the capacity expansion of the battery packs BMS.

In the working process, the BMS circuit board 2 is electrified to generate heat, the heat is transmitted to the heat conducting plate 303 in a heat transmission mode, the heat conducting plate 303 can transmit the heat to the heat conducting copper pipe 302, the heat conducting copper pipe 302 can transmit the heat to the heat conducting fins 319, the heat conducting fins 319 can spread the heat to the air, meanwhile, one group of exhaust fans 321 can extract the outside air into the fixed cover 301, the other group of exhaust fans 321 can extract the air in the fixed cover 301, so that circulation of the air inside and outside the fixed cover 301 can be realized, and the air can take away the heat on the heat conducting fins 319 in the circulation process, so that heat dissipation and cooling of the BMS circuit board 2 can be realized.

When multiunit group battery BMS carries out parallelly connected dilatation, a plurality of shell bodies 1 stack each other, the top of one extension copper pipe 305 and the fixed pipe 312 of another extension copper pipe 305 bottom are laminated mutually this moment, briquetting 318 extrudees each other with sealing block 309 this moment, briquetting 318 drives movable rod 315 and sealed pad 317 towards the inside motion of extension copper pipe 305 for sealing pad 317 separates with extension copper pipe 305, and sealing block 309 can drive inserted bar 307 towards the inside motion of extension copper pipe 305, two extension copper pipes 305 accomplish the UNICOM this moment, two sets of conduction copper pipes 302 and the conduction oil in the connection copper pipe 304 can realize the intersection through extension copper pipe 305, two sets of cooling module 3 can realize synchronous heat dissipation this moment.

When the connection assembly 4 is used for realizing the splicing of the two groups of outer shells 1, the movable block 410 is pressed, so that the movable block 410 drives the limiting block 406 to move inwards, the hydraulic push rod 411 is started and drives the movable block 410 to move upwards, so that the movable block 410 drives the limiting block 406 to move upwards, at the moment, the limiting block 406 is inserted into the fixed frame 401 in the connection assembly 4 above the movable block, then the movable block 410 is loosened, at the moment, the limiting block 406 moves outwards under the action of the spring, the clamping block 407 at the outer side of the limiting block 406 is inserted into the clamping groove 408, at the moment, the position between the two fixed frames 401 is fixed, and at the moment, the splicing of the two outer shells 1 is completed.

Second embodiment

As shown in fig. 12 and 13, when the BMS circuit board 2 is actually subjected to the splice heat dissipation, because the generated heat moves upwards, the heat inside the outer shell 1 at different heights is different, and the temperature values detected by the temperature sensors inside the heights are different, if the heat dissipation is still performed only by the heat dissipation assembly 3, especially when the adjacent extension copper tubes 305 are identical in splice communication degree, the accurate fixed-point heat dissipation cannot be achieved, so that the heat dissipation efficiency and the heat dissipation effect are reduced; and along with the continuous use temperature rise of the BMS circuit board 2, the BMS circuit board 2 can expand in volume, and the adjacent outer shell 1 is still fixedly clamped by the aid of the connecting assembly 4, so that the heat dissipation efficiency of the BMS circuit board 2 in the outer shell 1 is influenced, and meanwhile, the BMS circuit board 2 is deformed after being expanded and extruded, and normal use of the BMS circuit board is influenced; when the gap between the adjacent outer casings 1 is adjusted, the adjacent extension copper pipes 305 are in a spliced state, so that the splicing performance and heat dissipation efficiency of the extension copper pipes 305 are affected.

In order to solve the above problems, the safe energy storage battery pack BMS management system further includes: the hinge assembly comprises an inner cavity 328, a piston block 323 is slidably connected in the inner cavity 328, the bottom of the extension copper pipe 305 penetrates through the top of the fixed pipe 312 and stretches into the inner cavity 328 and is fixedly connected with the top of the piston block 323, and the piston block 323 is in sealing sliding connection with the inner cavity 328, so that when the extension copper pipe 305 moves upwards, the bottom of the extension copper pipe 305 drives the piston block 323 to move upwards in the inner cavity 328, and the sliding stability and the limiting performance of the extension copper pipe 305 are further guaranteed.

The inner wall of the fixed pipe 312 is uniformly provided with a plurality of groups of through holes 325 in an array manner, a fulcrum 326 is arranged at the inner bottom of the through holes 325, a damping hinge rod 327 is arranged at the top of the fulcrum 326, the fulcrum 326 is used as a supporting point, two ends of the damping hinge rod 327 can all generate wane rotation, further change of moving direction in the vertical direction is realized, one end of the damping hinge rod 327 close to the extending copper pipe 305 is hinged with the side wall of the extending copper pipe 305, one end of the damping hinge rod 327 far away from the extending copper pipe 305 is hinged with an inner sleeve 324, damping hinge rod 327 is positioned at two ends of the fulcrum 326, and therefore, when the extending copper pipe 305 drives a piston block 323 to move upwards in the inner cavity 328, the extending copper pipe 305 drives one side of the damping hinge rod 327 to move upwards, the other end of the damping hinge rod 327 drives the inner sleeve 324 to move downwards under the action of the fulcrum 326, further the opposite of moving of the extending copper pipe 305 and the inner sleeve 324 in the vertical direction is realized, and two ends of the damping hinge rod 327 are of the damping hinge rod are of the damping hinge structure, and further realizing that when the damping hinge rod is hinged with the top of the extending copper pipe 305 and the side wall of the inner sleeve 324.

The inner wall of the fixed tube 312 and the top of the inner sleeve 324 are provided with a fixed ring, and the fixed ring limits the top of the inner sleeve 324, so that the fixed seat 314 is prevented from being driven by the acting force of the spring to move upwards and influences the position of the extension copper tube 305 by means of the damping hinge rod 327 under the initial working condition.

The bottom of inner skleeve 324 and the top fixed connection of fixing base 314, then can drive fixing base 314 down-ward movement when inner skleeve 324 moves down, increase and sealed pad 317 between the time of fixing base 314 down-ward movement, and with the help of the wedge structure of wedge intercommunication groove 316, fixing base 314 relatively wedge intercommunication groove 316 down-ward movement, then get into the inside conduction oil mass increase of fixed pipe 312 along sealing seat 310, thereby the fixed point improves the radiating efficiency in this position, the height value of inner skleeve 324 is greater than through-hole 325, and then guarantee that inner skleeve 324 still can block up the protection to through-hole 325 when the inside reciprocates of fixed pipe 312, avoid the inside conduction oil of inner skleeve 324 to get into inside the through-hole 325 and cause the influence, the outer wall uniform array of inner skleeve 324 is equipped with the multiunit matching groove, matching groove and matching piece sealing sliding connection, then inner skleeve 324 realizes steady movement in fixed pipe 312 inside, the inner wall and the inner wall sealing sliding connection of fixed pipe 312, further improved the circulation stability and the leakproofness of the inside conduction oil of extension 305.

When in use, according to the first embodiment, when the adjacent outer shell 1 is fixed in a plugging manner, the hydraulic push rod 411 drives the slide rail 404 to move to a proper height through the slide block 403 and the slide groove 402, then drives the limiting block 406 to move to a proper position under the action of the spring, the clamping block 407 is clamped and fixed inside the adjacent clamping groove 408, meanwhile, the adjacent extension copper tube 305 is fixed in a plugging manner, the fixed tube 312 and the top of the adjacent extension copper tube 305 are mutually pressed and contacted, the adjacent extension copper tube 305 and the fixed tube 312 are screwed and fixed by the connecting sleeve 313, in the fixing process, the movable rod 315 applies a pressing force to the top of the sealing block 309 by the pressing block 318, so that the sealing block 309 is separated from the sealing seat 310, the sealing pad 317 is separated from the fixed seat 314, the adjacent extension copper tube 305 is in a circulation state, and at the moment, the fixed ring limits the top of the inner sleeve 324, when the spring applies an elastic force to the bottom of the fixed seat 314, the fixed seat 314 does not drive the inner sleeve 324 to move upwards, and the position change of the adjacent extension copper tube 324 does not occur.

Along with the continuous use of device, BMS circuit board 2 constantly works and produces heat, simultaneously because multiunit BMS circuit board 2 synchronous operation, and the heat that the BMS circuit board 2 during operation of different positions produced is different, and steam can constantly upwards move, then the inside temperature of multiunit shell 1 that is located upper portion is higher than the inside temperature value of lower multiunit shell 1, and consequently the inside temperature value of each shell 1 can slightly have the error, and the inside temperature value of each shell 1 detects can constantly change.

In order to improve the fixed point quick discharge of the inside heat of shell 1 to leave the expansion clearance when taking place to expand for BMS circuit board 2 under high temperature environment, then when the temperature value that temperature sensor detected risees, hydraulic push rod 411 starts and drives slide rail 404 upward movement through slider 403 and spout 402, slide rail 404 drives stopper 406 upward movement through slide 405, stopper 406 drives fixture block 407 upward movement, fixture block 407 drives the fixed frame 401 upward movement of upper strata through draw-in groove 408, synchronous upper shell 1 upward movement when fixed frame 401 upward movement, the clearance between two adjacent shell 1 increases, and then improve radiating efficiency and the radiating effect between the adjacent shell 1, and can cause BMS circuit board 2 volume to take place to expand when the temperature risees, then increase to BMS circuit board 2's expansion with the help of clearance between two shell 1 leaves the clearance, avoid adjacent BMS circuit board 2 to expand and take place the effort that increases the inside and receive when squeezing, thereby take place the broken explosion etc. of BMS circuit board 2, further reinforcing device inside each part's safety stability.

When the upper outer shell 1 moves upwards, the upper outer shell 1 drives the inner extension copper tube 305 to move upwards, the piston block 323 is synchronously driven to move upwards in the inner cavity 328 when the extension copper tube 305 moves upwards, one end of the damping hinge rod 327 is synchronously driven to hinge upwards when the extension copper tube 305 moves upwards, the damping hinge rod 327 rotates by virtue of the supporting hinge action of the fulcrum 326, the other end of the damping hinge rod 327 rotates downwards by virtue of the rocker, the inner sleeve 324 at the other end is driven to move downwards by the damping hinge rod 327, the inner sleeve 324 and the inner wall of the fixed tube 312 are sealed to move downwards and drive the fixed seat 314 to move downwards, the fixed seat 314 moves downwards and increases the distance between the fixed seat 314 and the sealing gasket 317, the fixed seat 314 moves downwards relative to the movable rod 315, meanwhile, the diameter change of the wedge-shaped communication groove 316 is utilized to drive the sealing block 309 to move downwards by virtue of the combined action of the spring and the pressing block 318, the clearance between the sealing block 309 and the sealing block 310 is increased, and the sealing block 307 is driven to move downwards along with the downward movement of the sealing block 309, the sealing block 307 moves downwards along with the sealing block 309, the inner sleeve 307 moves downwards and the diameter of the sealing block 308 is increased by the wedge-shaped communication groove 308, the diameter change of the sealing block is further increased, the heat conducting oil enters the inner sleeve 324 is cooled down, the heat conducting oil is cooled down and reaches the heat conducting oil is cooled down in the heat conducting groove is cooled down, and reaches the heat conducting device, and reaches the heat conducting efficiency, and is further, and has high heat efficiency, and is cooled heat efficiency.

When the heat dissipation efficiency at the corresponding position is increased, the temperature value inside the outer shell 1 is continuously reduced, the temperature value detected by the temperature sensor is gradually reduced, the hydraulic push rod 411 drives the slide rail 404 to move downwards through the slide groove 402 and the slide block 403 to restore to the original position, the slide rail 404 drives the limit block 406 to move downwards through the slide seat 405, the limit block 406 drives the upper outer shell 1 to move downwards through the fixture block 407 and the fixture slot 408 to restore to the original position, the upper outer shell 1 drives the extension copper pipe 305 to move downwards and drives the piston block 323 to move downwards inside the inner cavity 328 to restore to the original position, the extension copper pipe 305 drives the damping hinge rod 327 to rotate reversely when moving downwards, the other end of the damping hinge rod 327 drives the inner sleeve 324 and the fixed seat 314 to move upwards to restore to the original position, and each structure restores to the normal working state again.

The device not only realizes fixed-point heat dissipation of the assembly and the splicing of the multi-layer outer shell bodies 1, has high heat dissipation efficiency and good heat dissipation effect, but also correspondingly increases the gap between two adjacent outer shell bodies 1 when the temperature of the outer shell bodies 1 is increased, so that the heat dissipation efficiency and the heat dissipation effect can be further improved, and meanwhile, gaps can be reserved for the high-temperature expansion of the BMS circuit board 2, and the damage of an internal structure caused by the overlarge expansion of the BMS circuit board 2 is avoided; meanwhile, when the gap between the adjacent outer shells 1 is increased, the circulation rate of the heat conduction oil between the adjacent extension copper tubes 305 can be correspondingly adjusted, so that the adaptability is stronger, the stability is higher, and the fixed-point cooling effect is better.

Third embodiment

As shown in fig. 14 to 18, the BMS circuit board 2 circuit includes: the voltage input end of the FUSED_VBAT+ is 12 batteries connected in series, the voltage is about 39.6V, after passing through the R202 and T201 elements, the voltage is reduced to 5V to supply power for the IC201, and two paths of 3.0V voltages can be output by the IC201 chip, and the two paths of voltages can provide power for other chips.

The IC201 is an AEF analog front-end chip and is used for detecting various parameters of the lithium iron phosphate battery in the product; for example: the IC201 monitors the voltage of 12 paths of lithium iron phosphate batteries which are connected in series 280AH, the temperature of the 12 paths of batteries, and controls the balance of the voltages of the 12 paths of batteries so as to ensure the normal operation of the lithium iron phosphate batteries. The under-voltage, over-temperature protection and the like of the battery are achieved, and C0-C12 pins of the IC201 are respectively connected to the positive and negative electrodes of 12 lithium iron phosphate batteries through resistors and fuses so as to read the battery voltage. The IC201 has the S1-S12 pins which can control the conduction of 12 MOS tubes respectively, and the MOS tubes can discharge the battery after the conduction, so as to ensure that the voltage of the battery does not exceed 3.65V in the charging process, thereby ensuring the balance of the battery.

The GPOI1-GPIO5 can perform external logic control, input and detect battery temperature and the like, and finally all data detected by the IC201 are connected to an AFE chip with the same next function through pins 41, 42, 47 and 48 of the IC201, so that data transmission is realized.

The daisy chain communication of TR201 connects the isolation transformer, mainly realize the function of the electric isolation protection circuit of each AFE and chip communication.

The IC201 serves as a battery-master data control chip, and transmits data to a corresponding single-chip microcomputer.

As shown in fig. 19 to 23, the BMS circuit board 2 circuit further includes: the voltage input end of the FUSED_VBAT+ is 12 batteries connected in series, the voltage is about 39.6V, after passing through the R302 and T301 elements, the voltage is reduced to 5V to supply power for the IC301, and two paths of 3.0V voltages can be output by the IC301 chip, and the two paths of voltages can provide power for other chips.

The IC301 is an AEF analog front-end chip and is used for detecting various parameters of the lithium iron phosphate battery in the product; for example: the IC301 monitors the voltage of 12 serial 280AH lithium iron phosphate batteries, the temperature of the 12 batteries, and controls the balance of the 12 battery voltages to ensure the normal operation of the lithium iron phosphate batteries, so as to realize the protection of undervoltage, overvoltage and overtemperature of the batteries, and the C0-C12 pins of the IC301 are respectively connected to the positive and negative electrodes of the 12 lithium iron phosphate batteries through resistors and fuses so as to read the battery voltages. IC301 has the S1-S12 pins empty and equalization control is already implemented by IC201, which is different from IC 201.

The GPOI1-GPIO5 can perform external logic control, input detection battery temperature and the like. Finally, all data detected by the IC301 are connected to the AFE chip with the next same function through pins 41, 42, 47 and 48 of the IC301, so that data transmission is realized.

The daisy chain communication of TR301 connects the isolation transformer, mainly realize the function of the electric isolation protection circuit of each AFE and chip communication.

The IC201 and the IC301 realize the functional safety of the product, one of the two AFEs is the master and the other is the slave, one AFE chip is prevented from being invalid, and the other AFE reads data, so that the stability and the safety of the product are ensured.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims

1. The BMS management system for the safe energy storage battery pack is characterized by comprising an outer shell, a BMS circuit board, a heat dissipation assembly and a connection assembly;

the connecting assembly comprises a fixed frame, a sliding groove is formed in the top end of the inner side wall of the fixed frame, a hydraulic push rod is arranged at the inner bottom of the sliding groove, a sliding block is arranged at the top of the hydraulic push rod, a sliding rail is arranged on one side of the sliding block, a sliding seat is arranged on the inner side of the sliding rail, and a limiting block is arranged at one end of the sliding seat;

the top end of the inserted link is provided with a sealing block, the diameter of the wedge-shaped arc groove gradually increases from the end of the sealing block to the other end, a spring is arranged between the sealing block and the annular seat, the outer side of the sealing block is provided with a sealing seat with an annular structure, the sealing seat is fixedly arranged at the top end of the extended copper pipe, the top end of the movable link is provided with a sealing gasket, the bottom end of the movable link is provided with a pressing block, a spring is arranged between the pressing block and the fixed seat, and the diameter of the wedge-shaped communication groove gradually increases from the pressing block end to the other end;

the heat conduction copper pipe is characterized in that a heat conduction fin is arranged on the outer side of the heat conduction copper pipe and is of an inclined structure, a plurality of heat conduction holes are formed in the middle of the heat conduction fin in a penetrating mode, sealing plates are arranged at two ends of the fixed cover, and a circular groove matched with the extension copper pipe is formed in the middle of the sealing plate in a penetrating mode;

the hinge assembly comprises an inner cavity, a piston block is slidably connected in the inner cavity, the bottom of the extension copper pipe penetrates through the top of the fixed pipe, and is fixedly connected with the top of the piston block, a plurality of groups of through holes are uniformly arranged on the inner wall of the fixed pipe in an array manner, a fulcrum is arranged at the inner bottom of each through hole, a damping hinge rod is arranged at the top of each fulcrum, one end, close to the extension copper pipe, of each damping hinge rod is hinged with the side wall of the extension copper pipe, an inner sleeve is hinged at one end, far away from the extension copper pipe, of each damping hinge rod, and the bottom of each inner sleeve is fixedly connected with the top of the fixing seat;

the damping hinge rod is provided with damping telescopic structures at two ends of the pivot, the piston blocks are in sealing sliding connection with the inner cavity, the height of the inner sleeve is larger than the height value of the through hole, a plurality of groups of matching blocks are uniformly arranged on the outer wall of the inner sleeve in an array manner, a plurality of groups of matching grooves are uniformly arranged on the inner wall of the fixed pipe in an array manner, the matching grooves are in sealing sliding connection with the matching blocks, and the outer wall of the inner sleeve is in sealing sliding connection with the inner wall of the fixed pipe;

the fixed frame is fixed to be set up in the outside of shell body, be equipped with the spring between stopper and the slider, the top of stopper is equipped with the fixture block, the draw-in groove has been seted up to the inside wall bottom of fixed frame, draw-in groove and fixture block looks adaptation.

2. The safety energy storage battery pack BMS management system according to claim 1, wherein: the BMS circuit board is fixedly arranged in the shell, the two radiating assemblies are arranged and fixedly arranged on two sides of the shell respectively, and the four connecting assemblies are arranged and fixedly arranged at four corners of the outer side wall of the shell respectively.

3. The safety energy storage battery pack BMS management system according to claim 1, wherein: the fixed cover is fixed to be set up in the outside of shell body, the both sides of fixed cover all set up to the slope structure, the heat conduction copper pipe sets up to "" shape structure, the heat conduction board sets up in the inside of shell body, the lower surface of heat conduction board is laminated mutually with the upper surface of BMS circuit board.

4. The safety energy storage battery pack BMS management system according to claim 1, wherein: the fixed cover is characterized in that the two sides of the fixed cover are respectively provided with an exhaust fan in a penetrating way, the exhaust fans are arranged on the inclined surfaces on the outer sides of the fixed cover, the rotation directions of the exhaust fans on the two sides of the fixed cover are opposite, the top end of the outer side of the extension copper pipe is provided with external threads, the outer side of the fixed pipe is sleeved with a connecting sleeve, and the inner side of the connecting sleeve is provided with internal threads matched with the external threads.

5. The safety energy storage battery pack BMS management system according to claim 1, wherein: the square groove is formed in the top end of the outer side wall of the fixed frame in a penetrating mode, the movable block is arranged in the square groove in a penetrating mode, and the movable block is fixedly arranged on the outer side of the limiting block.