CN218887365U

CN218887365U - Portable high specific energy battery pack worn by single person

Info

Publication number: CN218887365U
Application number: CN202223278264.2U
Authority: CN
Inventors: 陈剑; 周天舒
Original assignee: Dalian Institute of Chemical Physics of CAS
Current assignee: Dalian Institute of Chemical Physics of CAS
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-04-18
Anticipated expiration: 2032-12-07

Abstract

The utility model provides a portable high specific energy battery package of single dress, include: the battery pack comprises a lithium-sulfur battery pack, a battery pack shell and a battery management system; the battery pack shell is a closed hollow shell and comprises: a housing body and a front panel; the lithium-sulfur battery pack and the battery management system are arranged in the battery shell, and the shell body is fixedly connected with the front end panel through a slot; the housing main body and the front panel are also provided with through holes for mounting parts. The utility model has simple structure of the shell and is convenient for processing and assembling; the carbon fiber composite material with relatively low density is used as the main body material of the shell of the battery pack, so that the structural strength is ensured, the weight of the shell is reduced to the maximum extent, and the grouping efficiency of the battery pack is improved.

Description

Portable high specific energy battery pack worn by single person

Technical Field

The utility model relates to a technical field of battery package particularly, especially relates to a single portable high specific energy battery package of dressing.

Background

Portable battery packs are an indispensable part of current energy storage battery technology. On one hand, the portable battery pack can supply power to electric appliances such as a flashlight, an interphone or a portable radio station in the working process, and maintain the normal work of each electric appliance; or the mobile phone, the tablet personal computer and other equipment are charged, so that the continuous work of the mobile phone, the tablet personal computer and other equipment is ensured. On the other hand, as the portable energy storage device worn by a single person, the battery pack can be replaced at any time, so that the battery pack is convenient to charge and maintain, and the endurance of the electronic device carried about in the single person advancing process is further ensured.

Compared with other batteries, the lithium-sulfur battery has the advantages of high specific energy, abundant key material reserves and low cost. The conventional portable battery pack or charger usually selects a lithium ion battery with low energy density, relatively mature technology and high industrialization degree, such as a cylindrical 18650 battery and the like, based on daily use consideration. However, as a portable battery pack worn by a single person, an extremely high demand is placed on weight reduction of a battery system. During the long-time outdoor work of a single person, the weight and the energy of the battery pack determine the working capacity of the single person during the outdoor traveling. In order to improve the working time of a single person and increase the electric equipment which can be carried by the single person, the portable battery pack worn by the single person should reduce the weight of the portable battery pack as much as possible and improve the capacity of the portable battery pack. Compared with a portable battery pack or a lithium ion battery commonly used by a charger, the lithium sulfur battery has higher energy density, namely, the battery pack has higher energy on the premise that the weight of the lithium sulfur battery is lighter.

And when the single outdoor working environment is in the extremely low temperature environment, the discharge performance of the energy storage battery in the common electric equipment or charging equipment is often influenced by the ambient temperature, for example, in the process of using a mobile phone or a tablet computer outdoors in winter, which is common in life, the phenomenon of sudden power failure or automatic shutdown of the equipment may occur. Under certain more extreme conditions, the outdoor environment temperature can reach-40 ℃, and the common lithium ion battery can not meet the requirement of single outdoor operation at the temperature. The energy density of the lithium-sulfur battery can still reach 300wh/kg at the temperature, and the single person can be provided with the endurance time of more than 10 hours on the premise of meeting the normal work of various electric equipment.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned technical problems in the background art, a portable high specific energy battery pack worn by a single person is provided. The utility model discloses a technical means as follows:

a portable high specific energy battery pack for wearing by a single person, comprising: the battery pack comprises a lithium-sulfur battery pack, a battery pack shell and a battery management system; the battery pack shell is a closed hollow shell and comprises: a housing body and a front panel; the lithium-sulfur battery pack and the battery management system are arranged in the battery shell, and the shell body is fixedly connected with the front end panel through a slot; the housing main body and the front panel are also provided with through holes for mounting parts.

Further, the housing main body includes: a plurality of side surfaces and a bottom surface; the bottom surface and the front end panel are equal in size; the opposite side surfaces are equal in size and fixedly connected with the bottom surface.

Furthermore, the shell main body is made of carbon fiber composite materials, and insulating highland barley paper is attached to one side, in contact with the battery pack, of the interior of the shell main body.

Further, the front panel material is nylon and is formed by a 3d printing technology.

Still further, the lithium sulfur battery comprises: a plurality of cells connected in series.

Further, the battery management system includes: control circuit board, switch, input/output interface, communication interface and electric quantity display lamp.

Furthermore, the switch and the communication interface in the battery management system are arranged and fixed on the shell body.

Furthermore, a control circuit board, an input/output interface and an electric quantity display lamp in the battery management system are arranged and fixed on the front panel.

Still further, the weight of the lithium sulfur battery is 85% of the weight of the battery pack.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model has simple structure of the shell and is convenient for processing and assembling; the carbon fiber composite material with relatively low density is used as the main body material of the shell of the battery pack, so that the structural strength is ensured, the weight of the shell is reduced to the maximum extent, and the grouping efficiency of the battery pack is improved.

2. The utility model discloses a nylon materials, the front end panel of battery package is made through the technology that 3d printed, and 3d printing technique can process the part that the preparation has comparatively complicacy and meticulous structure under the prerequisite of lower cost, under the prerequisite that satisfies each item function of front end panel, reduces panel weight, improves the efficiency in groups of group battery.

3. The utility model discloses the material that single portable battery package of wearing set up the casing main part is the better carbon fiber material of thermal conductivity, is convenient for control and manage the temperature of group battery, is favorable to the inside heat of group battery in time through diffusion to housing face, has improved the homogeneity of the inside temperature of group battery.

4. The utility model discloses the structure of battery package is retrencied lightly, and whole weight is no longer than 1kg, and whole volume is no longer than 1L, is convenient for one put into the battery package and dresses with oneself the clothes.

5. The utility model discloses be applied to under the extremely low temperature condition, lithium sulphur battery energy density under this temperature still can reach 300wh/kg, at single outdoor operations's in-process, can provide the time of continuing navigation more than about 10 hours for each item consumer's normal work.

Drawings

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

Fig. 1 is a schematic view of the battery pack of the present invention;

fig. 2 is a schematic view of the internal structure of the battery pack of the present invention;

FIG. 3 is a schematic diagram of the front panel structure of the present invention;

fig. 4 is a schematic structural diagram of a lithium sulfur battery cell according to the present invention;

fig. 5 is a schematic circuit connection diagram of the lithium-sulfur battery pack according to the present invention;

wherein, 1 is the casing main part, 2 is the front end panel, 3 is battery package input \ output anodal, 4 is the power display lamp, 5 is battery package input \ output negative pole, 6 is the switch, 7 is battery package communication interface, 8 is the lithium sulphur group battery, 9 is control circuit board.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1-2, for the utility model discloses a battery package structural schematic and battery package inner structure schematic, for realizing above-mentioned purpose, the utility model discloses a technical scheme be: a portable high specific energy battery pack for wearing by a single person, comprising: a case body 1, a front panel 2, a battery management system, and a lithium-sulfur battery 8. Wherein, the battery management system adopts the mature battery management system in the prior art.

The battery management system and the lithium-sulfur battery 8 are arranged in the shell body 1 and the front end panel 2; the battery management system includes: the battery pack input/output circuit comprises a battery pack input/output positive electrode 3, an electric quantity display lamp 4, a battery pack input/output negative electrode 5, a switch 6 and a battery pack communication interface 7; the lithium sulfur battery 8 includes: and the lithium-sulfur battery pack 8 is formed by connecting a plurality of lithium-sulfur battery monomers in series and connecting the lithium-sulfur battery monomers in series with a battery management system.

Wherein, the lithium-sulfur battery pack 8 is used as an energy storage battery of a portable battery pack worn by a single person. The battery management system is used for controlling the working state of the lithium-sulfur battery pack, and performs power supply output and charging input on various electric equipment carried by a single person during outdoor operation through a battery pack input/output positive electrode 3 and a battery pack input/output negative electrode 5; the residual electric quantity of the lithium-sulfur battery pack 8 in the working process is displayed in real time through the electric quantity display lamp 4; information acquisition and state monitoring are carried out on the lithium-sulfur battery pack 8 through a battery pack communication interface 7; the switch 6 is used for controlling the on-off of an external input/output circuit of the battery pack; the control circuit board 9 detects a plurality of lithium sulfur battery cells inside the lithium sulfur battery pack 8, so that normal operation of the battery cells is ensured and no safety problem occurs.

The control circuit board 9 in the battery management system has the functions of: the voltage detection and the under-voltage and over-voltage protection function of the lithium-sulfur battery, the voltage detection and the under-voltage and over-voltage protection function of the lithium-sulfur battery pack 8, the over-current protection function of the lithium-sulfur battery pack 8, and the temperature monitoring and alarming function of the lithium-sulfur battery pack 8. The control circuit board 9 in the battery management system is the control circuit board 9 in the battery management system used in the prior art, and can be used after being directly installed, and the specific structure of the control circuit board is not explained herein.

As shown in fig. 2, it is a schematic diagram of the internal structure of the battery pack of the present invention. Wherein, the battery package casing is confined hollow shell, includes: a housing body 1 and a front panel 2. The shell body 1 and the front panel 2 are designed to be light, and all the materials are selected to be low-density materials, and the weight of the processed and formed battery pack shell is 10% of that of the lithium-sulfur battery 8.

The shell body 1 needs to have certain structural strength and has the functions of protecting and supporting the lithium-sulfur battery pack 8 in the shell; because the lithium-sulfur battery can expand in volume to a certain extent in the discharging process and needs external force to compress and limit, the shell main body 1 also needs to have certain toughness to play a role in limiting and clamping the lithium-sulfur battery pack 8 in the shell; and casing main part 1 need possess certain heat dispersion, reduces the difference in temperature in the group battery, makes the portable group battery of single dress use or the in-process of maintaining under normal atmospheric temperature environment, and sulphur lithium cell 8 is inside can in time dispel the heat, still need compromise certain heat preservation performance simultaneously, satisfies the in-process of single outdoor operations under certain extreme environment, and lithium sulphur cell 8 can normally work in the environment of low temperature low atmospheric pressure.

The shell body 1 is made of carbon fiber composite materials and comprises four side surfaces and a bottom surface, and the size of the bottom surface is equal to that of the front end surface; the sizes of the two opposite side surfaces are equal, and the side surfaces and the ground are fixedly bonded. Highland barley paper is attached to the surface of the inner side of the shell body 1, which is in contact with the lithium-sulfur battery pack 8, so that the insulation and safety of the interior of the shell are guaranteed. Two through holes are formed in two opposite side surfaces of the shell body 1 and used for installing a switch 6 and a battery pack communication interface 7. After the structure of casing main part 1 bonds fixed shaping, use the sandblast technology to handle the outside surface of casing main part 1, make casing main part 1 surface obtain certain cleanliness and roughness, the closed angle to the small burr in the outside and the juncture between the adjacent two sides is cleared up and is polished in the 1 processing production process of casing main part, and make workpiece surface level and smooth more, and make the outside surface of casing main part 1 have the matte effect, it is that the battery package is more pleasing to the eye and portable.

As shown in fig. 3, the front panel 2 needs to have a relatively complicated and fine structure for installing and fixing the battery pack input/output anode 3, the electric quantity display lamp 4, the battery pack input/output cathode 5 and the control circuit board 9 in the portable battery pack worn by a single person, and to realize the connection with the housing main body 1. The left end and the right end of the front panel 2 are respectively provided with a through hole, and the battery pack input/output anode 3 and the battery pack input/output cathode 5 are fixed on the front panel by using a nut and a bolt of the battery pack input/output interface. A square through hole is formed in the middle of the front panel 2 and used for installing the electric quantity indicating lamp 4 and is fixed by hot melt adhesive in a sticking mode. Four round holes are formed in the inner side of the front panel 2, and after the straight-line-shaped external thread cylindrical pin is installed in the round holes, the control circuit board 9 is installed and fixed on the front panel 2 through nuts.

The front panel 2 is printed using a nylon material 3 d. The 3d printing process enables the product to have a finer structure. The upper end and the lower end of the front panel 2 are respectively provided with a row of convex slots, and the slots are clamped into the shell body 1, so that the connection between the front panel 2 and the shell body 1 is realized. The front panel 2 is thickened to improve the fastening of the connection, and the inside of the front panel 2 has a lattice-like hollow structure to reduce the weight of the front panel 2.

As shown in fig. 2 and 4, the schematic diagram of the internal structure of the battery pack and the schematic diagram of the single lithium-sulfur battery are shown; a lithium sulfur battery 8 comprising: the battery comprises a plurality of battery monomers connected in series, wherein each battery monomer is a sulfur lithium battery monomer cell; a plurality of lithium sulfur battery cells are arranged in a matrix in the lower case body 1. The lithium-sulfur battery is a novel lithium battery with high mass ratio energy, and the energy density of the lithium-sulfur battery can still reach 300wh/kg at the temperature of-40 ℃. The utility model discloses in, the encapsulation is the lithium sulphur group battery 9 weight after in groups accounts for 85% of whole portable battery package weight.

As shown in fig. 5, for the circuit connection schematic diagram of the lithium sulfur battery pack 8 of the present invention, the matrix of the lithium sulfur battery pack 8 includes a plurality of battery cells, and the connection mode is serial connection. The positive electrode and the negative electrode of the lithium-sulfur battery pack 8 which is connected in series are connected to the control circuit board 9, and lead wires are led out to the input/output positive electrode 3 and the input/output negative electrode 5 of the battery pack. The lithium-sulfur battery pack provides power for the portable battery pack worn by a single person.

In other embodiments, the actual energy storage requirement of the portable battery pack may also be determined according to other single-person operation scenarios and the conditions of the carried electric devices, the number of battery cells in the lithium-sulfur battery pack is designed, and it is required to ensure that the battery pack as an energy storage battery can normally operate in an extremely low temperature (e.g., -40 ℃) environment and meet the electric requirement of the carried devices of a single person.

The utility model discloses the problem that mainly faces is single energy storage problem of carrying consumer under the low temperature condition among the outdoor operations process. When the single-person operation environment is in a high latitude or high altitude area, the environment is a low temperature environment, and at the moment, in the using process of common electric equipment such as a mobile phone or a tablet computer, the phenomenon of sudden 'power failure' or automatic shutdown of the equipment may occur. Under certain more extreme conditions, the outdoor environment temperature can reach-40 ℃, and at the moment, the common lithium ion battery cannot be normally used at the temperature. The lithium-sulfur battery still has good discharge performance at the temperature, and can meet the requirement of single outdoor operation. And the utility model discloses the battery package that adopts, its structure all adopts the lightweight design, provides structure and functional support and protection for inside group battery. This battery package weight is no longer than 1kg, and the volume is no longer than 1L, and the single person of being convenient for is in the outdoor operations in-process, puts the battery package in knapsack or clothes pocket and dresses the use. Meanwhile, the energy density of the whole battery pack can still reach 300wh/kg, and the air-conditioning system can provide the single person with the endurance time of more than 10 hours on the premise of meeting the normal work of various electric equipment.

The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments. In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A portable high specific energy battery pack worn by a single person, comprising: the battery pack comprises a lithium-sulfur battery pack, a battery pack shell and a battery management system; the battery pack shell is a closed hollow shell and comprises: a housing body and a front panel;

the lithium-sulfur battery pack and the battery management system are arranged in the battery pack shell, and the shell body is fixedly connected with the front end panel through a slot; the shell body and the front panel are also provided with through holes for mounting parts.

2. The portable high specific energy battery pack of claim 1, wherein the housing body comprises: a plurality of side surfaces and a bottom surface; the bottom surface and the front end panel are equal in size; the opposite side surfaces are equal in size and fixedly connected with the bottom surface.

3. The portable high specific energy battery pack of claim 1, wherein the housing body is made of carbon fiber composite, and the side of the interior of the housing body in contact with the battery pack is attached with insulating highland barley paper.

4. The portable high specific energy battery pack of claim 1, wherein the front panel material is nylon and is formed by 3d printing technology.

5. A portable high specific energy battery pack for wearing by a single person as claimed in claim 1, wherein said lithium sulfur battery pack comprises: a plurality of battery monomers connected in series are installed in the battery shell in an embedded mode, and the matched lithium-sulfur battery pack is fixed in the battery shell through self volume expansion.

6. A portable high specific energy battery pack for wearing by a single person as claimed in claim 1, wherein said battery management system comprises: control circuit board, switch, input/output interface, communication interface and electric quantity display lamp.

7. The portable high specific energy battery pack as claimed in claim 6, wherein the switch and the communication interface of the battery management system are disposed and fixed on the main body of the case.

8. The portable high specific energy battery pack of claim 6, wherein the control circuit board, the input/output interface and the power display lamp of the battery management system are disposed and fixed on the front panel.

9. A portable high specific energy battery pack for wearing by a single person as claimed in claim 1, wherein the weight of said lithium sulphur battery pack is 85% of the weight of the battery pack.