CN117578013B - Wide-temperature polymer lithium ion battery pack - Google Patents
Wide-temperature polymer lithium ion battery pack Download PDFInfo
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- CN117578013B CN117578013B CN202410056936.XA CN202410056936A CN117578013B CN 117578013 B CN117578013 B CN 117578013B CN 202410056936 A CN202410056936 A CN 202410056936A CN 117578013 B CN117578013 B CN 117578013B
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- lithium ion
- ion battery
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- battery
- temperature polymer
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 133
- 229920000642 polymer Polymers 0.000 title claims abstract description 34
- 230000006835 compression Effects 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000012634 fragment Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of lithium batteries, in particular to a wide-temperature polymer lithium ion battery pack, which comprises a battery shell and a plurality of lithium ion batteries arranged in the battery shell, wherein a first elastic piece and an adjusting table are arranged in the battery shell; the quantity of adjusting the platform has a plurality ofly, and with the butt one-to-one setting of first elastic component, adjusting the platform and can slide in order to change the compression volume of first elastic component along the direction of height of battery case, and then make the compression volume of first elastic component bigger when the vibration intensity that lithium ion battery received is bigger to improve lithium ion battery's shock resistance when improving lithium ion battery stability.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a wide-temperature polymer lithium ion battery pack.
Background
According to the different electrolyte materials used in the lithium ion battery, the lithium ion battery can be divided into two major types, namely a liquid lithium ion battery and a polymer lithium ion battery, wherein the polymer lithium ion battery has the advantages of light weight, small volume, high energy density, high voltage, small self-discharge, no memory effect, good safety performance, capability of being manufactured into various shapes and the like, and is widely applied to various fields, for example, the Chinese patent publication No. CN116914246A discloses a thermally responsive wide-temperature-range electrolyte, an electrolyte preparation method and a battery.
In the related art, the polymer lithium ion battery pack suitable for the wide temperature field not only needs to operate in a wider temperature range, but also needs to adapt to other severe working conditions such as impact, vibration and the like, which may cause displacement of the battery, poor contact, even short circuit or open circuit of the electric connection, and accidents such as thermal runaway or abnormal power supply failure of the battery caused by the extreme temperature working condition, which affect the normal use of the polymer lithium ion battery pack.
Disclosure of Invention
Based on the above, it is necessary to provide a wide-temperature polymer lithium ion battery pack for solving the problems that the conventional polymer lithium ion battery pack is easy to vibrate and cannot be used normally in the use or transportation process.
The above purpose is achieved by the following technical scheme:
the wide-temperature polymer lithium ion battery pack comprises a battery shell and a plurality of lithium ion batteries arranged in the battery shell, wherein a first elastic piece and an adjusting table are arranged in the battery shell, a plurality of first elastic pieces are uniformly distributed around each lithium ion battery, and the lithium ion battery is abutted with one first elastic piece on the lithium ion battery or abutted with the inner side wall of the battery shell through one first elastic piece on the lithium ion battery; the quantity of adjustment platform has a plurality ofly, and with the butt department one-to-one setting of first elastic component, adjustment platform can be followed the direction of height of battery case is slided in order to change the compression volume of first elastic component, and then makes the compression volume of first elastic component is bigger when the shock strength that the lithium ion battery received is bigger.
Further, each adjusting table is provided with two pressing sheets, and each pressing sheet can elastically deform and elastically slide along the height direction perpendicular to the battery case; the battery case is internally provided with two bus plates and an adjusting part, the bus plates are respectively arranged at two ends of the anode and the cathode of the lithium ion battery, and the bus plates are electrically connected with the anode or the cathode of the lithium ion battery; when the vibration intensity of the lithium ion battery is greater than the preset vibration intensity, the adjusting part drives the two pressing sheets to be mutually far away along the height direction perpendicular to the battery case, and the two pressing sheets are elastically deformed and pressed on the bus plate.
Further, the adjusting part comprises an adjusting block and a clamping protrusion, and the clamping protrusion is arranged on the first elastic piece; the adjusting block is positioned between the two pressing sheets and can slide along the height direction of the battery shell; when the vibration intensity of the lithium ion battery is greater than the preset vibration intensity, the adjusting block and the two pressing pieces move relatively under the blocking action of the clamping protrusion, so that the two pressing pieces are driven to be far away from each other along the height direction perpendicular to the battery case.
Further, the adjusting block is provided with a corrugated surface which can be matched with the clamp in a protruding way; when the vibration intensity of the lithium ion battery is zero, the adjusting table moves reciprocally along the height direction of the battery case, and the corrugated surface and the clamping protrusion are matched to drive the first elastic piece to vibrate reciprocally, so that the lithium ion battery moves to an initial position.
Further, a second elastic piece is arranged between the pressing piece and the adjusting table, and the two pressing pieces can clamp the adjusting block under the action of the second elastic piece.
Further, the second elastic member is provided as a compression spring.
Further, the first elastic piece is arranged as a spring piece.
Further, the spring plate is shaped like a saw tooth or a wave.
Further, a ventilation opening is formed in the side wall surface of the battery shell, and the ventilation opening can receive air in the external environment so as to reduce the temperature of the lithium ion battery.
Further, the wide temperature polymer lithium ion battery pack further comprises a driving piece, wherein the driving piece is used for providing driving force for sliding the adjusting table along the height direction of the battery shell.
The beneficial effects of the invention are as follows:
according to the wide-temperature polymer lithium ion battery pack, when vibration occurs, the sliding distance of the adjusting table along the height direction of the battery shell can be adjusted according to the vibration intensity received by the lithium ion battery, and the compression amount of the first elastic piece is changed through the adjusting table, so that the clamping force of the first elastic piece on the lithium ion battery can be adaptively adjusted along with the vibration intensity, and the damage to the lithium ion battery caused by excessive clamping is avoided under the condition that the lithium ion battery is not displaced when the vibration intensity is smaller, and the electrical connection stability of the lithium ion battery is ensured under the condition that the lithium ion battery is not displaced when the vibration intensity is larger.
Further, through set up on the regulating block can with the protruding complex ripple face of card, and then when the vibration intensity that lithium ion battery received is zero, drive the elevating platform through external force and follow the direction reciprocating motion of battery case to drive the reciprocal vibrations of first elastic component through the cooperation between ripple face and the protruding card, so that lithium ion battery can remove initial position, thereby realize the automatic correction of lithium ion battery position, guarantee the normal use of lithium ion battery.
Drawings
Fig. 1 is a schematic perspective view of a wide temperature range polymer lithium ion battery pack according to an embodiment of the present invention;
fig. 2 is a schematic front view of a wide temperature range polymer lithium ion battery pack according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view in the A-A direction of the wide temperature polymer lithium ion battery shown in FIG. 2;
FIG. 4 is a schematic view of a partial enlarged structure of a portion B of the wide temperature polymer lithium ion battery shown in FIG. 3;
FIG. 5 is a C-C cross-sectional view of the wide temperature polymer lithium ion battery shown in FIG. 2;
FIG. 6 is a schematic diagram of an exploded view of a component of a wide temperature polymer lithium ion battery with a battery case removed according to an embodiment of the present invention;
FIG. 7 is a schematic view of a partial enlarged structure of a wide temperature polymer lithium ion battery pack D shown in FIG. 6 with a battery case removed;
FIG. 8 is a schematic view of a partial enlarged structure of the wide temperature polymer lithium ion battery pack E shown in FIG. 7 with the battery case removed;
FIG. 9 is a schematic view of a partially cut-away configuration of the conditioning station of the wide temperature polymer lithium ion battery pack shown in FIG. 8 with the battery case removed;
fig. 10 is a schematic perspective view illustrating assembly of a mounting frame, a spring plate and an adjusting plate of a wide temperature polymer lithium ion battery pack according to an embodiment of the invention.
Wherein:
100. a battery case; 101. a vent; 110. a sliding plate; 111. an adjustment table; 1111. a corrugated surface; 112. a mounting rod; 113. a pressure spring; 114. tabletting; 120. an adjusting block;
200. a bus plate; 201. an electrode sheet;
300. a limiting plate; 301. a mounting hole;
400. a mounting frame; 410. a spring plate; 420. an adjusting plate; 421. a clamping protrusion;
500. and driving the cylinder.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1 to 10, a wide temperature range polymer lithium ion battery pack according to an embodiment of the present invention; in the present embodiment, the wide temperature polymer lithium ion battery pack is configured to include a battery case 100 and a plurality of lithium ion batteries mounted inside the battery case 100, specifically, as shown in fig. 1, the battery case 100 is configured in a box-like structure, as shown in fig. 5, the lithium ion batteries are arranged in parallel at equal intervals in the width direction of the battery case 100, and each group is configured to include five lithium ion batteries arranged at equal intervals in the length direction of the battery case 100; more specifically, as shown in fig. 6, in order to facilitate the installation of the lithium ion battery, limiting plates 300 parallel to the bottom wall surface of the battery case 100 are further provided in the battery case 100, the number of the limiting plates 300 is two, a preset distance is provided between the two limiting plates 300, and each limiting plate 300 is provided with a plurality of mounting holes 301 which have the same number and arrangement manner as the lithium ion battery, and when in use, the lithium ion battery and the mounting holes 301 are in one-to-one correspondence for insertion.
The inside of battery case 100 is provided with first elastic component and regulating table 111, a plurality of first elastic components are all evenly arranged around every lithium ion battery, the lithium ion battery carries out the butt through a first elastic component on it and a first elastic component on the adjacent lithium ion battery, or carry out the butt with the inside wall of battery case 100, in this embodiment, first elastic component sets up to shell fragment 410, specifically, as shown in fig. 10, taking a lithium ion battery as an example, at lithium ion battery's outside has cup jointed mounting bracket 400, four shell fragments 410 evenly arrange around mounting bracket 400 along the circumferencial direction, shell fragment 410 one end fixed connection is on mounting bracket 400, the other end fixed connection has regulating plate 420, the shape of regulating plate 420 sets up to C shape structure, and the opening is towards shell fragment 410 setting, as shown in fig. 5, shell fragment 410 on the same lithium ion battery is when the installation, two shell fragments 410 set up along the length direction of battery case 100, and the lithium ion shell fragment 410 between same row between the lithium ion battery case 100 along the length direction of length direction that the adjacent lithium ion battery case 100 set up, the state is in the shell fragment 410 is in the state that the lithium ion shell 100 is in the same length direction that the shell is in the adjacent shell's the lithium ion shell's the state is in the state that the shell's the tip is in the lithium ion shell's the state of the shell's the butt, the state is in the state that the shell's 100 is in the state that the lithium ion shell's the tip is in the state between the state of the shell's the state of the lithium-state of being arranged along the shell's 100.
It can be appreciated that by setting all the spring plates 410 in compression initially, an initial clamping force is given to the lithium ion battery by the mounting frame 400, so that the lithium ion battery is less prone to vibration.
The number of the adjusting tables 111 is multiple, the adjusting tables 111 are arranged in one-to-one correspondence with the abutting positions of the first elastic pieces, the adjusting tables 111 can slide along the height direction of the battery case 100 to change the compression amount of the first elastic pieces, and then the compression amount of the first elastic pieces is larger when the vibration intensity of the lithium ion battery is larger, specifically, as shown in fig. 8, the appearance of the adjusting tables 111 is set to be a frame structure consisting of a rectangle and an isosceles triangle, the bottom edges of the isosceles triangle are equal to one edge of the rectangle, and are combined, the top angles of the isosceles triangle of the adjusting tables 111 are arranged along the height direction of the battery case 100 and towards the abutting positions of the elastic pieces 410 when the adjacent elastic pieces 410 are abutted, as shown in fig. 4, the adjusting plates 420 on the adjacent elastic pieces 410 are formed with V-shaped grooves, and the top angles of the V-shaped grooves are correspondingly arranged; more specifically, as shown in fig. 6, sliding plates 110 parallel to the bottom wall surface of the battery case 100 are further disposed in the battery case 100, two sliding plates 110 are disposed, each sliding plate 110 is disposed on a surface of the lithium ion battery facing the sliding plate 110, and the sliding plates 110 can synchronously drive the adjusting plates 111 thereon to slide along the height direction of the battery case 100 under the action of an external force, so as to change the compression amount of the elastic sheet 410.
In the process of vibration, the sliding plate 110 is driven by external force to slide along the height direction of the battery shell 100 towards the direction close to the lithium ion battery, the sliding plate 110 synchronously drives the adjusting table 111 on the sliding plate to slide along the height direction of the battery shell 100, and the moving distance of the sliding plate 110 is positively correlated with the vibration intensity suffered by the lithium ion battery, that is, the greater the vibration intensity suffered by the lithium ion battery is, the greater the moving distance of the sliding plate 110 is, in the moving process of the sliding plate 110, taking one adjusting table 111 as an example, the adjusting table 111 is inserted into a corresponding V-shaped groove, and the greater the moving distance of the adjusting table 111 along the height direction of the battery shell 100 towards the direction close to the lithium ion battery is, the greater the distance between the adjacent elastic sheets 410 is, and the corresponding compression amount is also greater, so that for the same lithium ion battery, the lithium ion battery can be kept in place by two groups of equal and opposite acting forces, and the normal use of the lithium ion battery is avoided.
In a further embodiment, each adjusting table 111 is provided with two pressing sheets 114, two pressing sheets 114 can be elastically deformed and elastically slid along the height direction perpendicular to the battery case 100, specifically, as shown in fig. 4, 8 and 9, the adjusting table 111 is provided with a mounting rod 112, the mounting rod 112 is provided with a T-shaped structure, the mounting rod 112 is provided with a vertical section of a vertical connected horizontal section, the vertical section is vertically and fixedly connected to the sliding plate 110, the horizontal section extends along the height direction perpendicular to the battery case 100, two pressing sheets 114 are oppositely arranged on the mounting rod 112, each pressing sheet 114 is provided with a rigid section and an elastic section, the rigid section is sleeved on the mounting rod 112 in use and can elastically slide along the height direction perpendicular to the battery case 100, the elastic section is obliquely arranged on the rigid section, and the elastic section can be elastically deformed; the battery case 100 is internally provided with two bus plates 200 and an adjusting part, the number of the bus plates 200 is two, the bus plates 200 are respectively arranged at two ends of the positive electrode and the negative electrode of the lithium ion battery, the bus plates 200 are electrically connected with the positive electrode or the negative electrode of the lithium ion battery, specifically, as shown in fig. 6 and 7, the bus plates 200 and the limiting plates 300 are arranged in a one-to-one correspondence manner, and are positioned on a side surface of the limiting plates 300 far away from the lithium ion battery, and a plurality of electrode plates 201 with the same number and arrangement manner as the lithium ion battery are arranged on each bus plate 200; when the vibration intensity of the lithium ion battery is greater than the preset vibration intensity, the adjusting portion drives the two pressing pieces 114 to be away from each other along the height direction perpendicular to the battery case 100, and makes the two pressing pieces 114 elastically deform and press on the bus plate 200, so as to improve the electrical connection stability between the electrode slice 201 and the lithium ion battery.
In this embodiment, the adjusting portion includes an adjusting block 120 and a clamping protrusion 421, the clamping protrusion 421 is disposed on the first elastic member, specifically, as shown in fig. 4 and 10, two clamping protrusions 421 are disposed on one adjusting plate 420, the clamping protrusions 421 are disposed in a semi-cylindrical structure, and when adjacent elastic pieces 410 abut against each other and form a V-shaped groove, the clamping protrusions 421 on adjacent adjusting plates 420 are located at the tip of the V-shaped groove and abut against each other; the adjusting block 120 is located between the two pressing pieces 114 and can slide along the height direction of the battery case 100, and a through hole is provided on the adjusting table 111 for the adjusting block 120 to extend or retract; when the vibration intensity of the lithium ion battery is greater than that of the lithium ion battery, the adjusting block 120 and the two pressing pieces 114 move relatively under the blocking action of the blocking protrusion 421, so that the two pressing pieces 114 are driven to be far away from each other along the height direction perpendicular to the battery case 100.
When the vibration intensity of the lithium ion battery is smaller than or equal to the preset vibration intensity, the sliding plate 110 synchronously drives the adjusting table 111 thereon to slide downwards, the distance between the two pressing sheets 114 on the same adjusting table 111 is the nearest in the moving process of the sliding plate 110, and the adjusting block 120 extends out of the adjusting table 111 but is not contacted with the clamping protrusion 421; when the vibration intensity of the lithium ion battery is greater than the preset vibration intensity, the adjusting block 120 contacts with the clamping protrusion 421, the adjusting block 120 keeps still under the blocking action of the clamping protrusion 421, along with the downward sliding of the adjusting table 111, the adjusting block 120 slides upwards relative to the adjusting table 111, the adjusting block 120 drives the two pressing sheets 114 to be mutually far away along the height direction perpendicular to the battery case 100, and the pressing sheets 114 are elastically deformed and pressed on the bus plate 200, so that the electrical connection stability between the electrode sheet 201 and the lithium ion battery is improved.
In a further embodiment, as shown in fig. 8, a corrugated surface 1111 capable of being engaged with the catch 421 is provided on the adjustment block 120; when the vibration intensity of the lithium ion battery is zero, that is, the lithium ion battery is not vibrated, the position of the lithium ion battery may deviate due to the influence of factors such as friction, installation error and matching error, at this time, the adjusting table 111 is driven to reciprocate along the height direction of the battery case 100, and the elastic sheet 410 is driven to vibrate reciprocally through the matching of the corrugated surface 1111 and the clamping protrusion 421, so that the resultant force of the lithium ion battery has the tendency of resetting the lithium ion battery, and the lithium ion battery is vibrated and moved to the initial position through continuously changing the resultant force, thereby realizing the automatic correction of the position of the lithium ion battery and ensuring the normal use of the lithium ion battery.
In other embodiments, a second elastic member is disposed between the pressing piece 114 and the adjustment table 111, and the two pressing pieces 114 can clamp the adjustment block 120 under the action of the second elastic member.
In this embodiment, the second elastic member is set to be a compression spring 113, the number of compression springs 113 is two, and the compression springs 113 are set in one-to-one correspondence with the pressing pieces 114, the compression springs 113 are sleeved on the mounting rod 112 when in use, one end of each compression spring is fixedly connected or abutted on the rigid section of the pressing piece 114, the other end of each compression spring is fixedly connected or abutted on the end of the mounting rod 112, and the pressing piece 114 has a tendency to move along the direction towards the adjusting block 120 under the action of the compression springs 113, so that the adjusting block 120 can be clamped.
In some embodiments, as shown in fig. 10, the shape of the spring 410 may be configured in a zigzag or wavy shape to facilitate the molding process.
In some embodiments, the side wall surface of the battery case 100 is provided with a ventilation opening 101, and the ventilation opening 101 can receive air of the external environment to reduce the temperature of the lithium ion battery; specifically, as shown in fig. 1, circular vents 101 are provided at both side wall surfaces of the battery case 100 in the longitudinal direction thereof, and air of the external environment flows into the inside of the battery case 100 through one vent 101, is mixed with air inside the battery case 100, absorbs heat therein, and then flows out from the other vent 101.
It can be appreciated that when the elastic sheet 410 is configured in a zigzag or wave-shaped structure, the elastic sheet 410 can be used for limiting the displacement of the lithium ion battery, and can also be used for increasing the heat dissipation area of the lithium ion battery, so as to quickly reduce the temperature of the lithium ion battery and avoid overheating of the lithium ion battery.
In some embodiments, the wide temperature polymer lithium ion battery pack is provided to further include a driving member for providing a driving force for sliding the adjustment table 111 in the height direction of the battery case 100; in this embodiment, the driving members are set as driving cylinders 500, as shown in fig. 1 and 3, the number of driving cylinders 500 is two, and each set is set on the outer top wall surface and the outer bottom wall surface of the battery case 100, each set is set to include four driving cylinders 500, the four driving cylinders 500 are set at four corners of the battery case 100, and the output shafts of the four driving cylinders 500 of the same set are set toward the lithium ion battery and are fixedly connected to the sliding plate 110 to drive the sliding plate 110 to slide along the height direction of the battery case 100.
It is understood that the driving cylinder 500 may be provided as any one of a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.
In some embodiments, the vibration intensity to which the lithium ion battery is subjected may be set to be obtained by an acceleration sensor, which may be provided on the battery case 100.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. The wide-temperature polymer lithium ion battery pack comprises a battery shell and a plurality of lithium ion batteries arranged in the battery shell, and is characterized in that a first elastic piece and an adjusting table are arranged in the battery shell, a plurality of first elastic pieces are uniformly distributed around each lithium ion battery, and the lithium ion battery is abutted with one first elastic piece on the adjacent lithium ion battery or abutted with the inner side wall of the battery shell through one first elastic piece on the lithium ion battery; the number of the adjusting tables is multiple, the adjusting tables are arranged in one-to-one correspondence with the abutting positions of the first elastic pieces, and the adjusting tables can slide along the height direction of the battery shell so as to change the compression amount of the first elastic pieces, so that the compression amount of the first elastic pieces is larger when the vibration intensity of the lithium ion battery is larger;
each adjusting table is provided with two pressing sheets, and each pressing sheet can elastically deform and elastically slide along the height direction perpendicular to the battery case; the battery case is internally provided with two bus plates and an adjusting part, the bus plates are respectively arranged at two ends of the anode and the cathode of the lithium ion battery, and the bus plates are electrically connected with the anode or the cathode of the lithium ion battery; when the vibration intensity of the lithium ion battery is larger than the preset vibration intensity, the adjusting part drives the two pressing sheets to be mutually far away along the height direction perpendicular to the battery case, and the two pressing sheets are elastically deformed and pressed on the bus plate;
the adjusting part comprises an adjusting block and a clamping protrusion, and the clamping protrusion is arranged on the first elastic piece; the adjusting block is positioned between the two pressing sheets and can slide along the height direction of the battery shell; when the vibration intensity of the lithium ion battery is greater than the preset vibration intensity, the adjusting block and the two pressing pieces move relatively under the blocking action of the clamping protrusion, so that the two pressing pieces are driven to be far away from each other along the height direction perpendicular to the battery case.
2. The wide temperature polymer lithium ion battery pack according to claim 1, wherein the regulating block is provided with a corrugated surface capable of being matched with the clamp protrusion; when the vibration intensity of the lithium ion battery is zero, the adjusting table moves reciprocally along the height direction of the battery case, and the corrugated surface and the clamping protrusion are matched to drive the first elastic piece to vibrate reciprocally, so that the lithium ion battery moves to an initial position.
3. The broad temperature polymer lithium ion battery pack of claim 1, wherein a second elastic member is disposed between the pressing sheet and the adjusting table, and the two pressing sheets can clamp the adjusting block under the action of the second elastic member.
4. The broad temperature polymer lithium ion battery pack of claim 3, wherein the second elastic member is provided as a compression spring.
5. The broad temperature polymer lithium ion battery pack of claim 1, wherein the first elastic member is provided as a spring sheet.
6. The broad temperature polymer lithium ion battery pack of claim 5, wherein the spring is shaped as a saw tooth or a wave.
7. The broad temperature polymer lithium ion battery pack of claim 1, wherein a vent is formed in a side wall surface of the battery case, and the vent is capable of receiving air from an external environment to reduce the temperature of the lithium ion battery.
8. The wide temperature polymer lithium ion battery pack according to claim 1, further comprising a driving member for providing a driving force for sliding the adjustment table in a height direction of the battery case.
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| CN202410056936.XA CN117578013B (en) | 2024-01-16 | 2024-01-16 | Wide-temperature polymer lithium ion battery pack |
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| CN202410056936.XA CN117578013B (en) | 2024-01-16 | 2024-01-16 | Wide-temperature polymer lithium ion battery pack |
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| CN117578013B true CN117578013B (en) | 2024-03-26 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3428993A1 (en) * | 2017-07-13 | 2019-01-16 | Outokumpu Oyj | Safety battery compartment for battery electric vehicles |
| CN218039539U (en) * | 2022-05-10 | 2022-12-13 | 菏泽天宇新能源科技有限公司 | 18650 lithium cell safety arrangement |
| DE102022126441A1 (en) * | 2022-03-15 | 2023-09-21 | GM Global Technology Operations LLC | BATTERY CELL PACK |
| CN117276781A (en) * | 2023-11-22 | 2023-12-22 | 深圳市山木新能源科技股份有限公司 | Solid-state lithium battery module frame shockproof device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101256075B1 (en) * | 2011-04-07 | 2013-04-18 | 삼성에스디아이 주식회사 | Rechargeable battery pack having spacer |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3428993A1 (en) * | 2017-07-13 | 2019-01-16 | Outokumpu Oyj | Safety battery compartment for battery electric vehicles |
| DE102022126441A1 (en) * | 2022-03-15 | 2023-09-21 | GM Global Technology Operations LLC | BATTERY CELL PACK |
| CN218039539U (en) * | 2022-05-10 | 2022-12-13 | 菏泽天宇新能源科技有限公司 | 18650 lithium cell safety arrangement |
| CN117276781A (en) * | 2023-11-22 | 2023-12-22 | 深圳市山木新能源科技股份有限公司 | Solid-state lithium battery module frame shockproof device |
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| CN117578013A (en) | 2024-02-20 |
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