High-energy-density charge-discharge battery pack

Abstract

The utility model discloses a high-energy-density charge-discharge battery pack, which comprises a mounting seat and a plurality of battery cells arranged in the mounting seat in parallel, and two sides of the mounting seat are provided with fixing parts and conductive parts for fixing the battery cells. A battery management part, a battery charging and discharging part, an air flow guide part and a heat dissipation part are also arranged on the mounting seat; and the battery management part is respectively connected with the battery core and the battery charging and discharging part. In the charging and discharging process, a constant current control module and a constant voltage control module of a battery management component control charging and discharging of a battery pack, so that the use efficiency is greatly improved, in the charging and discharging process, a large amount of heat is generated, the charging and discharging efficiency of the battery is caused when the temperature is too high, and meanwhile the service life of the battery is influenced. The heat of the battery cell can be conducted through the heat dissipation fins on the heat dissipation seat, and a rapid heat dissipation function is achieved under the action of the air flow guide part.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pack technical field, concretely is a high energy density charge discharge battery pack. BACKGROUND

[0002] Lithium battery relative to ordinary lead acid battery energy density is high, cycle life is long, self discharge rate is low, no memory effect, has obtained the increasingly widespread application in industrial production, daily life, for example: 18650 electric core, 21700 electric core. Because lithium battery is in the use process often is in the form of battery pack, different lithium battery can produce the difference in performance, and then lead to the performance poor battery monomer reaches the maximum voltage value earlier than other battery monomers when charging, and reaches the minimum voltage value earlier than other battery monomers when discharging.

[0003] And according to the energy density of the existing high energy density battery, the energy density has little room for improvement, and the charging and discharging efficiency is low, and the battery pack that can improve the energy density charging and discharging cannot simultaneously consider its stability, thereby leading to poor thermal stability, and the risk of internal short circuit of the battery also increases, and the safety problem becomes particularly prominent. SUMMARY

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a high energy density charge discharge battery pack, which can effectively solve the problems raised in the background art.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] A high energy density charge discharge battery pack, comprising a mounting seat and a plurality of battery cores arranged in parallel in the mounting seat, the mounting seat is provided with a fixing component and a conductive component on both sides for fixing the battery core, the mounting seat is further provided with a battery management component, a battery charging and discharging component, an air flow guide component and a heat dissipation component, wherein the battery management component is connected to the battery core and the battery charging and discharging component respectively;

[0007] The battery management component comprises a constant current control module and a constant voltage control module, the battery charging and discharging component comprises a tab connector for connecting the battery core and a charging and discharging module, the constant current control module and the constant voltage control module are connected to the charging and discharging module through wires, and the tab connector is connected to the conductive component through the fixing component, wherein the heat dissipation component comprises a heat dissipation seat and a plurality of heat dissipation sleeves, the heat dissipation seat and the heat dissipation sleeve are integrally formed, and the heat dissipation sleeve is correspondingly sleeved on the battery core, and the air flow guide component is symmetrically arranged on both sides of the heat dissipation seat.

[0008] As a further description of the above technical scheme, the two sides of the mounting seat are provided with protective covers, the protective covers are in sealing connection with the mounting seat, a heat dissipation window is further formed in the mounting seat, the heat dissipation window is connected with the heat dissipation seat, and heat-conducting glue is further arranged at the connecting position of the heat dissipation seat and the heat dissipation window.

[0009] As a further description of the above technical scheme, the fixing component comprises a plurality of fixing sheets, the fixing sheets are fixed on the mounting seat through screws, a plurality of positioning holes for fixing the conductive components are further arranged on the fixing sheets, the conductive components comprise a plurality of pole columns connected with the battery core, and the pole columns are electrically connected with the tab connecting pieces.

[0010] As a further description of the above technical scheme, the positioning holes are provided with insulating fixing rings, the insulating fixing rings are provided with a plurality of mounting holes, the pole columns are arranged in the mounting holes one by one, and the material of the pole columns is copper-aluminum composite material.

[0011] As a further description of the above technical scheme, the tab connecting pieces comprise positive tabs and negative tabs, the battery core is sequentially laminated by a positive terminal, a diaphragm, a negative terminal, a core shaft and the diaphragm, and is wound into a hollow cylindrical body, the positive tabs are connected with the positive terminal, and the negative tabs are connected with the negative terminal.

[0012] As a further description of the above technical scheme, one side of the fixing sheet close to the mounting seat is formed with a protruding mounting portion, and the mounting seat is provided with a connecting portion embedded with the mounting portion.

[0013] As a further description of the above technical scheme, a plurality of heat dissipation fins are formed on the surface of the heat dissipation seat, the inner side of the heat dissipation sleeve is in contact with the surface of the battery core, and the heat dissipation seat and the heat dissipation sleeve are made of aluminum.

[0014] As a further description of the above technical scheme, the air guide component comprises a plurality of air guide grooves, the air guide grooves are integrally formed with the mounting seat, and the air guide grooves are arranged along the length direction of the mounting seat.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The high-energy-density charge-discharge battery pack has at least one of the following beneficial effects in use:

[0017] The pole on the battery core is connected with the charging and discharging module through the positive plate and the negative plate, and since the charging and discharging module is connected with the constant current control module and the constant voltage control module, the battery core can be protected and quickly charged and discharged, and the current can be kept at a constant value during the charging and discharging process. The whole has the property of high energy density, and the charging and discharging of the battery pack is controlled by the constant current control module and the constant voltage control module of the battery management component, so that the use efficiency is greatly improved. During the charging and discharging process, a large amount of heat is generated, and when the temperature is too high, the battery charging and discharging efficiency is reduced, and the service life of the battery is affected. The heat of the battery core can be conducted through the heat dissipation fins on the heat dissipation seat, and the function of rapid heat dissipation is realized under the action of the air guide component. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a first overall structure schematic view of the high-energy-density charging and discharging battery pack of the utility model;

[0019] Figure 2 It is a second overall structure schematic view of the high-energy-density charging and discharging battery pack of the utility model;

[0020] Figure 3 It is a first side structure schematic view of the high-energy-density charging and discharging battery pack of the utility model;

[0021] Figure 4 It is a second side structure schematic view of the high-energy-density charging and discharging battery pack of the utility model;

[0022] Figure 5 It is a third side structure schematic view of the high-energy-density charging and discharging battery pack of the utility model;

[0023] Figure 6 It is a perspective structure schematic view of the high-energy-density charging and discharging battery pack of the utility model;

[0024] Figure 7 It is a battery core structure schematic view of the high-energy-density charging and discharging battery pack of the utility model.

[0025] Reference numerals in the drawing:

[0026] 1, mounting seat; 101, protective cover; 2, battery management component; 201, constant current control module; 202, constant voltage control module; 3, battery charging and discharging component; 301, pole lug connecting piece; 302, positive lug; 303, negative lug; 4, battery core; 401, pole; 402, fixing component; 403, positioning hole; 404, insulating fixing ring; 405, fixing sheet; 406, positive end; 407, core shaft; 408, diaphragm; 409, negative end; 5, air guide component; 501, air guide groove; 6, heat dissipation component; 601, heat dissipation seat; 602, heat dissipation sleeve. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0028] As Figures 1-7 The utility model provides a kind of high energy density charge-discharge battery pack, including mounting seat 1 and several battery core 4 in parallel manner in mounting seat 1, the mounting seat 1 both sides are equipped with the fixed component 402 for fixing battery core 4 and conductive component, the mounting seat 1 is also equipped with battery management component 2, battery charge-discharge component 3, air guide component 5 and heat dissipation component 6, wherein the battery management component 2 is connected battery core 4 and battery charge-discharge component 3 respectively.

[0029] The embodiment corresponds to be arranged in mounting seat 1 by multiple independent battery core 4, wherein the shell of mounting seat 1 installs battery core 4 quantity is 10, battery core 4 is connected with each other by parallel manner, battery core 4 core is laminated by positive electrode end 406, diaphragm 408, negative electrode end 409, core shaft 407 and diaphragm 408 in sequence and is wound into hollow cylinder body, and is sleeved on the core shaft 407, wherein battery core 4 also has electrolyte inside, positive electrode material uses nickel-cobalt-manganese material, negative electrode is graphite material, and the whole has the nature of high energy density. In the process of charge and discharge, the charge-discharge of battery pack is controlled by constant current control module 201 and constant voltage control module 202 of battery management component 2, so as to provide use efficiency greatly.

[0030] The battery management component 2 includes constant current control module 201 and constant voltage control module 202, the battery charge-discharge component 3 includes pole lug connecting piece 301 for connecting battery core 4 and charge-discharge module, the constant current control module 201 and constant voltage control module 202 are connected with charge-discharge module by wire, the pole lug connecting piece 301 is connected with conductive component by fixed component 402, wherein the heat dissipation component 6 includes heat dissipation seat 601 and several heat dissipation sleeves 602, the heat dissipation seat 601 is integrally formed with heat dissipation sleeve 602, and the heat dissipation sleeve 602 is correspondingly sleeved on battery core 4, the air guide component 5 is symmetrically arranged on both sides of heat dissipation seat 601.

[0031] The embodiment is characterized in that a heat dissipation window is formed in the mounting base 1, the heat dissipation component 6 is composed of a heat dissipation base 601 and a heat dissipation sleeve 602, the heat dissipation base 601 is arranged in the heat dissipation window, and the heat dissipation sleeve 602 is sleeved on the battery core 4.

[0032] Further, the mounting base 1 is provided with protective covers 101, the protective covers 101 are sealingly connected with the mounting base 1, a heat dissipation window is formed in the mounting base 1, the heat dissipation window is connected with the heat dissipation base 601, and heat-conducting glue is arranged at the connecting position of the heat dissipation base 601 and the heat dissipation window.

[0033] The protective covers 101 can ensure the output terminals on both sides of the battery pack and have dustproof and waterproof functions, the heat dissipation window is arranged in the middle of the mounting base 1, the heat dissipation window is connected with the heat dissipation base 601 through heat-conducting glue, and the heat-conducting property is not affected while the heat dissipation window is sealingly connected with the heat dissipation base 601.

[0034] Further, the fixing component 402 includes fixing sheets 405, the fixing sheets 405 are fixed on the mounting base 1 through screws, the fixing sheets 405 are provided with positioning holes 403 for fixing the conductive components, the conductive components include pole columns 401 connected with the battery core 4, and the pole columns 401 are electrically connected with the tab connecting pieces 301.

[0035] Further, the positioning holes 403 are provided with insulating fixing rings 404, the insulating fixing rings 404 are provided with mounting holes, the pole columns 401 are arranged in the mounting holes in one-to-one correspondence, and the pole columns 401 are made of copper-aluminum composite material.

[0036] Further, the tab connecting pieces include positive tabs 302 and negative tabs 303, the battery core 4 is formed by sequentially stacking a positive end 406, a diaphragm 408, a negative end 409, a core shaft 407 and the diaphragm 408 and then winding the stacked components into a hollow cylindrical body, the positive tabs 302 are connected with the positive end 406, and the negative tabs 303 are connected with the negative end 409.

[0037] Further, one side of the fixing sheet 405 close to the mounting base 1 is formed with a protruding mounting portion, and the mounting base 1 is provided with a connecting portion embedded in the mounting portion.

[0038] The fixing sheet 405 of the fixing component 402 is provided according to the number of the battery core in the mounting seat 1, the fixing sheet 405 is two fixing sheets 405 with four positioning holes 403 and two fixing sheets 405 with two positioning holes 403 respectively, the fixing sheet 405 is embedded with the connecting part on the mounting seat 1 through the mounting part, and then is fixed through a screw, meanwhile, the insulating fixing ring 404 on the positioning hole 403 is provided with four mounting holes for fixing the pole 401, the pole 401 on the battery core 4 is connected with the charging and discharging module through the positive plate and the negative plate to realize charging and discharging, since the charging and discharging module is connected with the constant current control module 201 and the constant voltage control module 202 respectively, the battery core 4 can be protected and quickly charged and discharged at the same time, the current is ensured to be kept at a set constant value during the charging or discharging process of the battery, and the current is kept stable by adjusting the resistance, voltage and other parameters in the circuit. In the constant voltage mode, the control system stabilizes the output voltage or charging voltage of the battery at a set constant value, and adjusts the charging and discharging current according to the voltage deviation.

[0039] It is further explained that the surface of the heat dissipation seat 601 is formed with a plurality of heat dissipation fins, the inner side of the heat dissipation sleeve 602 is in contact with the surface of the battery core 4, and the heat dissipation seat 601 and the heat dissipation sleeve 602 are made of aluminum.

[0040] It is further explained that the air guide component 5 comprises a plurality of air guide grooves 501, the air guide grooves 501 are integrally formed with the mounting seat 1, and the air guide grooves 501 are arranged along the length direction of the mounting seat 1.

[0041] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A high-energy-density rechargeable and discharging battery pack, comprising a mounting base and a plurality of battery cells arranged in parallel within the mounting base, characterized in that, The mounting base is provided with fixing components and conductive components on both sides for fixing the battery cells. The mounting base is also provided with battery management components, battery charging and discharging components, air guiding components and heat dissipation components, wherein the battery management components are respectively connected to the battery cells and the battery charging and discharging components. The battery management component includes a constant current control module and a constant voltage control module. The battery charging and discharging component includes a tab connector for connecting the battery cell and a charging and discharging module. The constant current control module and the constant voltage control module are both connected to the charging and discharging module via wires. The tab connector is connected to a conductive component via a fixing component. The heat dissipation component includes a heat sink and several heat dissipation sleeves. The heat sink and heat dissipation sleeves are integrally formed, and the heat dissipation sleeves are fitted onto the battery cell one by one. The air guiding components are symmetrically arranged on both sides of the heat sink.

2. The high energy density charge-discharge battery pack according to claim 1, characterized in that: The mounting base is provided with protective covers on both sides, and the protective covers are sealed to the mounting base. The mounting base is also provided with a heat dissipation window, which is connected to the heat dissipation base, and thermal conductive adhesive is provided at the connection between the heat dissipation base and the heat dissipation window.

3. The high energy density charge-discharge battery pack according to claim 1, characterized in that: The fixing component includes several fixing plates, which are fixed to the mounting base by screws. The fixing plates are also provided with several positioning holes for fixing conductive components. The conductive components include several terminals for connecting battery cells, and the terminals are electrically connected to the tab connectors.

4. A high energy density charge-discharge battery pack according to claim 3, characterized in that: The positioning hole is provided with an insulating fixing ring, and the insulating fixing ring is provided with several mounting holes, wherein each pole post is inserted into the mounting hole, and the pole post is made of copper-aluminum composite material.

5. A high-energy-density charge-discharge battery pack according to claim 1 or 3, characterized in that: The electrode connector includes a positive electrode and a negative electrode. The battery cell is formed by sequentially stacking a positive terminal, a separator, a negative terminal, a core shaft, and a separator into a hollow cylindrical body, and then mounting it on the core shaft. The positive electrode is connected to the positive terminal, and the negative electrode is connected to the positive terminal.

6. A high energy density charge-discharge battery pack according to claim 3, characterized in that: The fixing piece has a protruding mounting portion formed on the side near the mounting base, and the mounting base has a connecting portion that fits into the mounting portion.

7. A high energy density charge-discharge battery pack according to claim 1, characterized in that: The heat sink is formed with a number of heat dissipation fins on its surface, and the inner side of the heat dissipation sleeve is in contact with the surface of the battery cell. The heat sink and the heat dissipation sleeve are made of aluminum.

8. A high energy density charge-discharge battery pack according to claim 1, characterized in that: The air guiding component includes several air guiding channels, which are integrally formed with the mounting base and are arranged along the length direction of the mounting base.

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