CN106784429B - Battery module and soft package battery - Google Patents
Battery module and soft package battery Download PDFInfo
- Publication number
- CN106784429B CN106784429B CN201710033097.XA CN201710033097A CN106784429B CN 106784429 B CN106784429 B CN 106784429B CN 201710033097 A CN201710033097 A CN 201710033097A CN 106784429 B CN106784429 B CN 106784429B
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- battery
- fixing plate
- groove
- edge
- accommodating
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- 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
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- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
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- 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
Abstract
The invention provides a battery module and a soft package battery. The battery module comprises a soft package battery, two end fixing plates and at least one battery fixing plate arranged between the two end fixing plates. The soft package battery comprises a battery body, and at least one edge of the battery body is provided with a sealing edge protruding out of the edge of the battery body. A plurality of first accommodating grooves are formed in one side of the end fixing plate; a plurality of second accommodating grooves matched with the first accommodating grooves are respectively formed in two sides of the battery fixing plate; and a buffer material is arranged in the first accommodating groove or the second accommodating groove. Compared with the prior art, the soft package battery is provided with the banding, the battery module is right the fixed effect of soft package battery is better, is difficult for not hard up, has avoided because of soft package battery is not hard up and makes the tab rupture or drop scheduling problem with the wiring of tab.
Description
Technical Field
The invention relates to the field of batteries, in particular to a battery module and a soft package battery.
Background
The soft package battery refers to a battery with a soft package material (such as an aluminum-plastic composite film) as a shell. The soft package battery has the advantages of light weight, large capacity, small internal resistance, good safety performance, flexible design and the like, and is increasingly adopted by the market. To meet the operating requirements of the device, it is generally necessary to assemble a plurality of soft pack batteries in series or in parallel. The pouch cell is difficult to fix during assembly because of the lack of a rigid outer case. In the prior art, there are certain drawbacks in the design of the battery body. For example, when the battery module is moved or moved, the fixed soft package battery is easy to loose in the moving or moving process, so that the tab of the soft package battery is broken or the connection wire connected with the tab is separated, which brings inconvenience to users.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a battery module and a soft-package battery which are convenient to move and have good fixing effect, so as to solve the problems that the soft-package battery in the prior art is poor in fixing effect, inconvenient to move and the like.
A preferred embodiment of the present invention provides a battery module including:
a soft pack battery;
two end fixing plates and at least one battery fixing plate disposed between the two end fixing plates, wherein:
the soft package battery comprises a battery body, wherein at least one edge of the battery body forms a sealed edge protruding out of the edge of the battery body;
a plurality of first accommodating grooves are formed in one side of the end fixing plate; two sides of each battery fixing plate are respectively provided with a second accommodating groove matched with the first accommodating groove; the first accommodating groove and the second accommodating groove are matched to form an accommodating cavity for accommodating the soft package battery;
a first step part matched with the edge sealing is arranged in each first accommodating groove of one of the two end fixing plates, and a first bulge is arranged in each first accommodating groove of the other end fixing plate;
the second containing groove on one side of the battery fixing plate is internally provided with a second protrusion matched with the first step part to fix the edge sealing in a pressing mode, and the edge of the second containing groove on the other side is provided with a second step part matched with the first protrusion to fix the edge sealing in a pressing mode.
In a preferred embodiment of the present invention, the above-mentioned flexible battery further includes a tab disposed on the battery body, and a housing sleeved on the battery body, where the tab is a metal sheet with a convex shape, and one end of the tab protruding is far away from the battery body, and at least one edge of the housing forms the sealing edge protruding from the edge of the battery body.
In a preferred embodiment of the present invention, a plurality of first grooves for extending the tabs of the pouch battery are provided at one side of each of the end fixing plates and/or the battery fixing plates.
In a preferred embodiment of the present invention, the end fixing plate and the battery fixing plate are provided with a plurality of second grooves for connection of a safety device for protecting the pouch battery to pass through at a side provided with the tab.
In a preferred embodiment of the present invention, the first protrusions on two adjacent first receiving grooves form a third groove, the second protrusions on two adjacent second receiving grooves form a fourth groove, one of the two end fixing plates is provided with a third protrusion that can be mated with the third groove on a side provided with the first stepped portion, and the battery fixing plate is provided with a fourth protrusion that can be mated with the third groove or the fourth groove on a side opposite to the fourth groove.
In a preferred embodiment of the present invention, two adjacent battery fixing plates or end fixing plates are provided with screw holes which are mutually matched, and the end fixing plates and the battery fixing plates are fixed by bolts or screws which are matched with the screw holes.
In a preferred embodiment of the present invention, a buffer material is disposed in each of the first receiving groove or the second receiving groove, so that one side of the receiving cavity has the buffer material.
In a preferred embodiment of the present invention, the battery fixing plate includes a plurality of barrier ribs disposed in the second receiving groove, and at least one of the barrier ribs in the same receiving cavity is provided with the buffer material.
In a preferred embodiment of the present invention, the battery fixing plate is provided with a heat dissipation groove for forming a ventilation heat dissipation channel.
The preferred embodiment of the present invention also provides a soft pack battery applied to the above battery module, the soft pack battery comprising:
a battery body;
a tab disposed on the battery body;
the sealing edge is arranged on at least one side surface of the battery body and used for fixing the battery body.
The invention provides a battery module and a soft package battery. The battery module comprises a soft package battery, two end fixing plates and at least one battery fixing plate arranged between the two end fixing plates. The soft package battery comprises a battery body and a shell sleeved on the battery body, wherein the shell forms an edge sealing protruding out of the edge of the battery body at least on edge of the battery body. Compared with the prior art, the battery module is simple in structure, the edge sealing is arranged on the battery body, so that the fixing effect of the soft-package battery is better, the soft-package battery is prevented from being broken due to loosening in the moving or moving process of the battery module, and the reliability of the soft-package battery in the use process is improved.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described. It is to be understood that the following drawings illustrate only certain embodiments of the invention and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.
Fig. 1 is a schematic view of a battery module according to a first embodiment of the present invention.
Fig. 2 is a partial enlarged view of the battery module according to the first embodiment of the present invention at the I-site in fig. 1.
Fig. 3 is a partial enlarged view of a portion II of the battery module according to the first embodiment of the present invention in fig. 1.
Fig. 4 is a partial enlarged view of a portion III of fig. 1 of a battery module according to a first embodiment of the present invention.
Fig. 5 is a schematic view of a flexible battery pack in a battery module according to a first embodiment of the present invention.
Fig. 6 is a schematic view of a battery module according to a second embodiment of the present invention.
Fig. 7 is a partial enlarged view of the battery module according to the second embodiment of the present invention at the I-site in fig. 6.
Fig. 8 is a schematic view of a battery fixing plate in a battery module according to a second embodiment of the present invention.
Fig. 9 is a schematic view of a flexible battery according to a third embodiment of the present invention.
Icon: 100-battery module; 110-end fixing plates; 111-a first accommodation groove; 112-a buffer material; 113-a first step; 114-a first bump; 115-a third groove; 116-a third bump; 117-threaded holes; 120-battery fixing plate; 121-a second accommodation groove; 122-fourth groove; 123-fourth protrusions; 124-a first groove; 125-a second groove; 126-a heat sink; 127-second step; 128-a second bump; 130-soft pack battery; 131-a battery body; 132-tab; 133-edge sealing.
Detailed Description
The technical solutions in 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. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present invention, the terms "first," "second," "third," "fourth," and the like are used merely to distinguish between descriptions and are not to be construed as merely or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
First embodiment:
referring to fig. 1, a schematic diagram of a battery module 100 according to a first embodiment of the invention is shown. The present embodiment provides a battery module 100, and the battery module 100 may include a pouch battery 130, two end fixing plates 110, and at least one battery fixing plate 120, the battery fixing plate 120 being disposed between the two end fixing plates 110. The soft pack battery 130 may include a battery body 131, a case, a sealing edge 133, and a tab 132. The tab 132 is disposed on the battery body 131, the casing is sleeved on the battery body 131, the casing forms a seal 133 protruding from at least one edge of the battery body 131, and the seal 133 is used for fixing the soft package battery 130.
In this or other embodiments, the pouch cell 130 has the seal 133. For example, the seal 133 of the battery body 131 may not be wide enough or not have the seal 133, and a case with the seal 133 may be sleeved on the battery body 131, so that the soft pack battery 130 has the seal 133, and the seal 133 may also be directly disposed on the edge of the battery body 131.
Referring to fig. 1, in the first embodiment, the battery fixing plate 120 may be one. A plurality of first receiving grooves 111 are provided on one side of the end fixing plate 110, and second receiving grooves 121 engaged with the first receiving grooves 111 are provided on both sides of the battery fixing plate 120, respectively. The first accommodating groove 111 and the second accommodating groove 121 cooperate to form an accommodating cavity for accommodating the battery soft package. The first accommodating groove 111 or the second accommodating groove 121 is provided with a buffer material 112, the battery fixing plate 120 is located between the two end fixing plates 110, and one side of each accommodating cavity is provided with the buffer material 112. The dimensions of the first accommodating groove 111, the second accommodating groove 121, and the accommodating cavity are matched with the dimensions of the soft package battery 130, that is, the soft package battery 130 can be accommodated in the first accommodating groove 111, the second accommodating groove 121, and the accommodating cavity.
In the first embodiment, referring to fig. 2 and 4, a first step portion 113 that mates with the seal edge 133 is disposed in each of the first receiving grooves 111 of one of the two end fixing plates 110, and a first protrusion 114 is disposed in each of the first receiving grooves 111 of the other end fixing plate 110. Referring to fig. 1 and 3, a second protrusion 128 that cooperates with the first step portion 113 to press-fit and fix the seal edge 133 is disposed in the second receiving groove 121 on one side of the battery fixing plate 120, and a second step portion 127 that cooperates with the first protrusion 114 to press-fit and fix the seal edge 133 is disposed on the edge of the second receiving groove 121 on the other side.
Specifically, for example, when each of the receiving chambers formed by the end fixing plate 110 and the battery fixing plate 120 receives the pouch battery 130, the end fixing plate 110 having the first stepped portion 113 is engaged with one side of the battery fixing plate 120 having the second protrusion 128, the end fixing plate 110 having the first protrusion 114 is engaged with the other side of the battery fixing plate 120 to form two layers of receiving chambers for receiving the pouch battery 130, and each layer has a plurality of receiving chambers. In each of the accommodating cavities, the sealing edge 133 of the soft-pack battery 130 is pressed by the first step portion 113 on the end fixing plate 110 and the second protrusion 128 on the battery fixing plate 120, so that the sealing edge 133 is clamped and fixed in a semi-closed narrow space formed by matching the first step portion 113 and the second protrusion 128, and is not easy to loosen, thereby fixing the soft-pack battery 130. In each accommodating cavity of the other layer, the sealing edge 133 of the soft-pack battery 130 is pressed by the first protrusion 114 on the end fixing plate 110 and the second step 127 on the battery fixing plate 120, so that the sealing edge 133 is fixed in the accommodating cavity and is not easy to loosen, and the shape, structure, technical means and achieved technical effect of the layer are similar to those of the previous layer. The first and second stepped portions 113 and 127 may have the same configuration, and the first and second protrusions 114 and 128 may have the same configuration.
In this embodiment, the cushioning material 112 may be a foam. For example, a plate-shaped foam may be disposed at a bottom side of each of the accommodating chambers, back glue or glue may be coated on two sides of the foam panel, or double-sided glue may be adhered to one side of the foam panel, and the other side of the foam panel is adhered and fixed to the bottom side of the accommodating chamber, and the other side of the foam panel is adhered and fixed to the battery body 131 of the soft package battery 130. On the battery body 131, on the opposite side of the side to which the foam is adhered, the battery body 131 may be adhered and fixed in the accommodating cavity by a back adhesive. The back adhesive and the foam increase the fixing area of the soft package battery 130, and further increase the fixing strength of the soft package battery 130.
In this embodiment, the soft battery 130 gradually expands in the thickness direction along with the increase of the number of charge/discharge cycles, and the remaining compressible space of the buffer material 112 can provide an expansion space for the soft battery 130, so that the soft battery 130 is prevented from being unstable due to the spatial variation of the soft battery 130 caused by expansion and contraction, and the fixing strength of the soft battery 130 is further improved. Experiments prove that if a certain pressure is applied to the soft pack battery 130 in the thickness direction of the soft pack battery 130 during the charge/discharge process, the safety factor of the soft pack battery 130 is improved, and the pressure can be set according to the optimal pressure required by the soft pack battery 130. For example, the cushioning material 112 may be selected from foam, and the spring force generated by the foam is matched to the optimal pressure required by the soft pack battery 130, and the spring force generated by the foam can be controlled by adjusting the density and compression of the foam. Foam has many characteristics such as flexibility, thin volume, light weight, reliable performance, etc., and is suitable for use as the cushioning material 112 in this embodiment.
In this embodiment, the cushioning material 112 may be, but is not limited to, polyethylene foam, neoprene, polystyrene foam, ethylene propylene diene monomer, vinyl, and the like. For example, the cushioning material 112 is selected from polystyrene foam plastics having a closed-cell structure, a small density, a light weight, a good mechanical strength, an excellent cushioning property, a good workability, a strong temperature adaptability, and the like, and is suitable for the cushioning material 112 of the present embodiment.
Referring to fig. 5, a schematic diagram of a flexible battery 130 in a battery module 100 according to a first embodiment of the invention is shown. In this embodiment, the battery body 131 may be provided with the seal edge 133 on both sides adjacent to the tab 132 and the tab 132. The end fixing plate 110 and the battery fixing plate 120 cooperate to form a plurality of accommodating cavities, and each accommodating cavity may be provided with the first step portion 113 and the first protrusion 114 (or provided with the second step portion 127 and the second protrusion 128) on three sides corresponding to the seal edge 133. Each pouch cell 130 received in the receiving cavity is fixed by a sealing edge 133 provided on the pouch cell 130 and the first stepped portion 113 and the first protrusion 114 (or the corresponding second stepped portion 127 and second protrusion 128) corresponding to the sealing edge 133. The three sides of the pouch battery 130 are fixed, so that the fixing strength of the pouch battery 130 is further improved to ensure the normal use of the pouch battery 130.
Referring to fig. 5, in the present embodiment, the tab 132 may be a protruding metal sheet, and one end of the protruding metal sheet is far away from the battery body 131. Specifically, one end of the convex-shaped metal sheet is wider than the other end, wherein the convex end can be a narrow end, and the other end is a wide end. The wide end is disposed on the battery body 131, and the narrow end is far away from the battery body 131 and is a free end. The narrow end may serve as a connection terminal for connecting other corresponding tabs 132 or wires. For example, each of the battery bodies 131 may be provided with two tabs 132 of positive and negative electrodes, and when a plurality of the soft-pack batteries 130 are connected in series, the positive tab 132 of one soft-pack battery 130 may be electrically connected with the negative tab 132 of another soft-pack battery 130 through welding or a conductive wire, and the plurality of soft-pack batteries 130 repeat the above connection to form a series power module.
In this embodiment, a first groove 124 is formed on one side of the end fixing plate 110 and/or the battery fixing plate 120 for extending the tab 132 of the pouch battery 130.
Specifically, each accommodating cavity may be provided with two first grooves 124 for extending out of the tab 132 of the soft-pack battery 130, or one first groove 124 may be provided correspondingly, and the one first groove 124 may be provided for extending out of the two tabs 132 of the soft-pack battery 130. The difference is that the two first grooves 124 are isolated from each other. When the battery cell of the soft battery 130 is placed, the two independent first grooves 124 can avoid the short circuit connection of the two tabs 132 of the battery cell of the soft battery 130 due to foreign matters, or the direct short circuit connection of the two tabs 132 due to external force. The foreign matter is a conductive material, such as floc, wire or metal scraps mixed with water, and the external force can be a force generated during collision.
In this embodiment, the end fixing plate 110 and the battery fixing plate 120 are provided with a plurality of second grooves 125 at the side where the tabs 132 are provided. The second groove 125 is used for allowing the wiring of the safety device for protecting the soft pack battery 130 to extend into or out of the accommodating groove.
In particular, the safety device may be a device having a protection circuit in which a fuse may be provided. The soft pack battery 130 is charged/discharged during use, and overcharge, overdischarge, and overcurrent affect the service life and performance safety of the battery. The fuse may be used as a secondary over-current protection element to protect the pouch cell 130. The second groove 125 may serve as a channel through which the safety device senses the internal and external electrical parameters of the battery module 100. The electrical parameter may be an overcurrent, an overvoltage, etc.
Referring to fig. 1, in the present embodiment, for the end fixing plate 110, the first protrusions 114 on two adjacent first receiving grooves 111 form a third groove 115 (for example, as shown in fig. 4); for each battery fixing plate 120, the second protrusions 128 on two adjacent second receiving grooves 121 form a fourth groove 122 (for example, as shown in fig. 3). One of the two end fixing plates 110 is provided with a third protrusion 116 that is engageable with the third recess 115 on a side where the first stepped portion 113 is provided, and the battery fixing plate 120 is provided with a fourth protrusion 123 that is engageable with the third recess 115 or the fourth recess 122 on a side opposite to the fourth recess 122. Two adjacent battery fixing plates 120 or end fixing plates 110 are provided with mutually matched threaded holes 117, and the end fixing plates 110 and the battery fixing plates 120 are fixed by bolts or screws matched with the threaded holes 117.
Specifically, the two end fixing plates 110 may be engaged with each other to form a fixing frame for fixing the pouch battery 130. The third grooves 115 of one of the two end fixing plates 110 are mated with the third protrusions 116 of the other, i.e., the third protrusions 116 may be placed in the corresponding third grooves 115. The two end fixing plates 110 are respectively provided with a threaded hole 117 which is matched with each other, the two end fixing plates 110 are fixed by screws or bolts matched with the threaded holes 117 to form the fixing frame, and a plurality of accommodating cavities capable of accommodating the soft-packed batteries 130 can be formed in the fixing frame. In addition, two or more of the battery fixing plates 120 have a structure similar to the two end fixing plates 110 described above, that is, each of the battery fixing plates 120 is provided with the fourth protrusion 123 and the fourth groove 122, which may be fixed by fixing in a similar manner to the two end fixing plates 110 described above.
In this embodiment, the battery fixing plate 120 is provided with a heat dissipation groove 126. The heat dissipation grooves 126 are disposed at both sides of each second receiving groove 121, and a plurality of channels for ventilation and heat dissipation are formed through the heat dissipation grooves 126 of each battery fixing plate 120. During the charge/discharge of the pouch battery 130, a large amount of heat is generated, and the air outside the battery module 100 may be introduced into the battery module 100 through the heat dissipation grooves 126 forming channels, so that the generated heat may be discharged to the outside of the battery module 100, thereby ensuring the normal charge/discharge of the pouch battery 130. The battery fixing plate 120 may be provided with the heat dissipation groove 126 having a similar structure to the battery fixing plate 120 and a similar technical effect.
Second embodiment:
fig. 6 is a schematic diagram of a battery module 100 according to a second embodiment of the invention. The present embodiment provides a battery module 100, which has substantially the same shape, operation principle and technical effects as those provided in the first embodiment, except that the battery fixing plates 120 are plural, and the battery fixing plates 120 may include a plurality of spacers. The battery fixing plates 120 may be matched with each other to form a plurality of receiving cavities for fixing the pouch batteries 130, and each layer may have a plurality of receiving cavities. The division bars are disposed in each second accommodating groove 121, and the division bars in each second accommodating groove 121 form a bottom plate of the second accommodating groove 121, that is, the second accommodating grooves 121 opposite to the two sides of the battery fixing plate 120 share one bottom plate. The bottom plate is a hollow plate structure formed by the plurality of parting strips, and can be integrally formed with the battery fixing plate 120. The battery module 100 in the second embodiment is lighter in weight than the battery module 100 in the first embodiment, and can be applied to higher-power electrical devices.
Specifically, a plurality of mutually matched threaded holes 117 may be formed in each of the plurality of battery fixing plates 120, and the threaded holes 117 of two adjacent battery fixing plates 120 are mutually matched and fixed by screws or bolts mutually matched with the threaded holes 117. It will be understood that the plurality of battery fixing plates 120 that are to be fitted together are sequentially ordered in sequence, the number, the configuration, the size and the arrangement positions of the screw holes 117 on the odd-numbered battery fixing plates 120 are the same, the number, the configuration, the size and the arrangement positions of the screw holes 117 on the even-numbered battery fixing plates 120 are the same, and the two types of screw holes 117 are mutually fitted, so that a plurality of the battery fixing plates 120 can be sequentially fixed by screws or bolts and assembled into a battery fixing frame, which is disposed between the two end fixing plates 110.
Referring to fig. 7, a partially enlarged view of a portion I of a battery module 100 according to a second embodiment of the invention is shown in fig. 6.
Referring to fig. 8, a schematic diagram of a battery fixing plate 120 in a battery module 100 according to a second embodiment of the invention is shown. In this embodiment, a fifth groove may be disposed on the parting bead, a part of the buffer member made of the buffer material 112 (e.g. foam) is disposed in the fifth groove, and another part of the buffer member protrudes from the fifth groove, and the buffer material 112 provides a pre-tightening force and an expansion space for the soft package battery 130. It should be noted that the schematic view of the battery fixing plate 120 shown in fig. 8 is a schematic view based on the other side of the battery fixing plate 120 shown in fig. 1.
Specifically, the size of the buffer member formed by the buffer material 112 matches that of the fifth groove, and the buffer member may have a strip-like structure. Opposite sides of the buffer member are provided with back glue or glue, one side of the buffer member is located in the fifth groove and used for bonding the parting bead, the buffer member is fixed, and the other side of the buffer member is used for bonding and fixing the soft package battery 130.
Third embodiment:
fig. 9 is a schematic diagram of a flexible battery 130 according to a third embodiment of the invention. The present embodiment provides a soft pack battery 130, and the shape, the structure, the operation principle and the technical effects of the soft pack battery 130 in the present embodiment are substantially the same as those of the soft pack battery 130 provided in the first embodiment, except that the sealing edges 133 are oppositely disposed on two sides of the battery body 131 adjacent to the side provided with the tab 132.
Note that, the soft pack battery 130 may be a lithium ion battery. The lithium ion battery may be, but is not limited to, a lithium cobalt oxide battery, a lithium nickel oxide battery, a lithium manganate battery, a lithium iron phosphate battery, and the like. The lithium ion battery has the advantages of small volume, large capacity, stable voltage, recycling, strong safety, being beneficial to sustainable development and the like, and is very suitable for being used as the soft package battery 130 of the embodiment.
In summary, the present invention provides a battery module and a soft package battery. The battery module comprises a soft package battery, two end fixing plates and at least one battery fixing plate arranged between the two end fixing plates. The soft package battery comprises a battery body, a tab arranged on the battery body and a shell sleeved on the battery body, wherein the shell forms an edge sealing protruding out of the edge of the battery body at least on the edge of the battery body. The first step part on the end fixing plate or the second step part on the battery fixing plate bears the sealing edge, and the sealing edge is pressed through the first bulge on the other end fixing plate or the second bulge on the battery fixing plate, so that the soft-package battery is fixed. Compared with the prior art, the buffer material is arranged in each accommodating cavity, the edge sealing is arranged on each soft package battery, the fixing effect of the soft package battery in the battery module is good, the soft package battery is not easy to loosen, and the problems that the lug is broken or the wiring of the lug falls off due to the loosening of the soft package battery are avoided.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A battery module, characterized in that the battery module comprises:
a soft pack battery;
two end fixing plates and one battery fixing plate disposed between the two end fixing plates, wherein:
the soft package battery comprises a battery body, wherein at least one edge of the battery body forms a sealed edge protruding out of the edge of the battery body;
a plurality of first accommodating grooves are formed in one side of the end fixing plate; two sides of each battery fixing plate are respectively provided with a second accommodating groove matched with the first accommodating groove; the first accommodating groove and the second accommodating groove are matched to form an accommodating cavity for accommodating the soft package battery;
a first step part matched with the edge sealing is arranged in each first accommodating groove of one of the two end fixing plates, and a first bulge is arranged in each first accommodating groove of the other end fixing plate;
a second protrusion matched with the first step part to fix the edge seal in a pressing way is arranged in the second accommodating groove on one side of the battery fixing plate, and a second step part matched with the first protrusion to fix the edge seal in a pressing way is arranged at the edge of the second accommodating groove on the other side;
the first protrusions on the adjacent two first accommodating grooves form a third groove, the second protrusions on the adjacent two second accommodating grooves form a fourth groove, one of the two end fixing plates is provided with a third protrusion which can be matched with the fourth groove on one side provided with the first step part, and the battery fixing plate is provided with a fourth protrusion which can be matched with the third groove on the side opposite to the fourth groove.
2. The battery module of claim 1, wherein the pouch battery further comprises a tab disposed on the battery body, and a housing sleeved on the battery body, the tab is a metal sheet with a convex shape, one end of the tab is far away from the battery body, and at least one edge of the housing forms the sealing edge protruding out of the edge of the battery body.
3. The battery module according to claim 2, wherein each of the end fixing plates and/or one side of the battery fixing plate is provided with a plurality of first grooves for the tab to protrude.
4. The battery module according to claim 2, wherein the end fixing plate and the battery fixing plate are provided with a plurality of second grooves for connection penetration of a safety device for protecting the pouch battery at the side where the tabs are provided.
5. The battery module according to claim 1, wherein two adjacent battery fixing plates or end fixing plates are provided with screw holes that are fitted to each other, and the end fixing plates and the battery fixing plates are fixed by bolts or screws that are fitted to the screw holes.
6. The battery module according to claim 1, wherein a buffer material is provided in each of the first or second receiving grooves such that one side of the receiving chamber has the buffer material.
7. The battery module according to claim 6, wherein the battery fixing plate includes a plurality of barrier ribs provided in the second accommodation groove, and at least one of the barrier ribs in the same accommodation chamber is provided with the buffer material.
8. The battery module according to claim 1, wherein the battery fixing plate is provided with a heat dissipation groove for forming a ventilation heat dissipation channel.
9. A pouch battery, applied to the battery module according to any one of claims 1 to 8, comprising:
a battery body;
a tab disposed on the battery body;
the sealing edge is arranged on at least one side surface of the battery body and used for fixing the battery body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710033097.XA CN106784429B (en) | 2017-01-18 | 2017-01-18 | Battery module and soft package battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710033097.XA CN106784429B (en) | 2017-01-18 | 2017-01-18 | Battery module and soft package battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106784429A CN106784429A (en) | 2017-05-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107452915A (en) * | 2017-09-18 | 2017-12-08 | 华霆（合肥）动力技术有限公司 | Battery fastening structure and supply unit |
| CN108428817B (en) * | 2018-04-02 | 2021-04-09 | 广州明美新能源股份有限公司 | Multi-cell battery based on elastic support protection |
| CN108565367B (en) * | 2018-04-02 | 2020-11-10 | 广州明美新能源股份有限公司 | Single-cell battery based on elastic support protection |
| CN108336452A (en) * | 2018-04-11 | 2018-07-27 | 华霆（合肥）动力技术有限公司 | Buffer heat insulation structural, base unit module and soft-package battery module |
| CN108448025A (en) * | 2018-05-28 | 2018-08-24 | 华霆（合肥）动力技术有限公司 | Base batteries unit and battery modules |
| CN109192913B (en) * | 2018-09-29 | 2021-06-22 | 湖南隆玛科技有限公司 | Soft package lithium battery module for electric automobile |
| KR20200111525A (en) * | 2019-03-19 | 2020-09-29 | 주식회사 엘지화학 | A battery module having an insulating pad having an extended length, a battery pack and a vehicle comprising the same |
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| CN202758945U (en) * | 2012-07-17 | 2013-02-27 | 北汽福田汽车股份有限公司 | Battery pack used for vehicle and battery pack assembly provided with battery pack and vehicle |
| WO2013183945A1 (en) * | 2012-06-07 | 2013-12-12 | 주식회사 엘지화학 | Battery module having stability-improved structure and high cooling efficiency |
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| CN202616308U (en) * | 2011-12-12 | 2012-12-19 | 北汽福田汽车股份有限公司 | Lithium ion battery parallel connection unit and lithium ion battery module with same |
| WO2013125748A1 (en) * | 2012-02-23 | 2013-08-29 | 세방전지(주) | Battery cell casing using engraved structure |
| CN202888250U (en) * | 2012-11-21 | 2013-04-17 | 微宏动力系统（湖州）有限公司 | Soft pack battery case, soft pack battery structure and soft pack battery module |
| CN205752334U (en) * | 2016-07-08 | 2016-11-30 | 华霆（合肥）动力技术有限公司 | Soft package lithium battery fixed support and battery modules |
| CN206401370U (en) * | 2017-01-18 | 2017-08-11 | 华霆（合肥）动力技术有限公司 | Battery modules and soft-package battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013183945A1 (en) * | 2012-06-07 | 2013-12-12 | 주식회사 엘지화학 | Battery module having stability-improved structure and high cooling efficiency |
| CN202758945U (en) * | 2012-07-17 | 2013-02-27 | 北汽福田汽车股份有限公司 | Battery pack used for vehicle and battery pack assembly provided with battery pack and vehicle |
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