CN214505636U - Battery module and battery pack with same - Google Patents

Abstract

The utility model discloses a battery module and have its battery package, including a plurality of electric core modules, electric core module includes unit frame and electric core subassembly, and electric core subassembly sets up between two unit frame, and electric core subassembly comprises one or more electric core, and the unit frame that is close to mutually of two adjacent electric core modules links to each other to make adjacent electric core module link to each other, and two adjacent unit frame of two electric core modules are at least partially spaced apart, in order to form the ventilation passageway between two unit frame. The cell frames which are close to each other are connected through the two adjacent cell modules, so that the two adjacent cell frames of the cell modules are at least partially spaced while the two adjacent cell modules are connected to form a ventilation channel, the heat dissipation part is incorporated into the battery module, the heat dissipation effect is enhanced, the space occupation of the heat dissipation part is reduced, and the integration efficiency from the cell to the module is further improved.

Description

Battery module and battery pack with same

Technical Field

The utility model belongs to the technical field of the battery package, particularly, relate to a battery module and have its battery package.

Background

With the current social energy crisis becoming more serious, the electric automobile is more and more concerned by the society, and the endurance of the electric automobile is the first concern of the electric automobile forever. Under the condition of not changing space and vehicle weight, the best method for increasing endurance is still to increase the energy density of the battery, so that the factor influencing the maximum energy density of the battery is still the integration efficiency of the battery from the cell module to the whole package, and because of the arrangement of connecting pieces between modules and other necessary parts, the integration efficiency of the battery from the cell module to the whole package is not high in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, an object of the present invention is to provide a battery module to achieve the effect of improving the integration efficiency from the battery cell to the module.

To achieve the above object, an embodiment of the first aspect of the present invention provides a battery module, which includes a plurality of battery cell modules, each of the battery cell modules includes a unit frame and a battery cell assembly, the battery cell assembly is disposed between two of the unit frames, the battery cell assembly includes one or more battery cells, two adjacent battery cell modules are close to each other, the unit frames are connected to each other, so that the adjacent battery cell modules are connected to each other, and two adjacent battery cell modules are spaced apart from each other at least partially, so as to form a ventilation channel between the unit frames.

According to the utility model discloses battery module, through adjacent two the battery core module be close to each other the unit frame links to each other, so that adjacent still with two when battery core module links to each other the adjacent two of battery core module the unit frame part at least is spaced apart to form ventilation channel, merge the radiating part inside battery module, both strengthened the radiating effect and reduced the space of radiating part and occupy, further improved the collection efficiency from electric core to module.

In addition, according to the present invention, the battery module provided by the above embodiment can also have the following additional technical features:

according to some embodiments of the utility model, the unit frame divide into first support and second support, the electric core subassembly set up in first support with between the second support, same the first support of electric core module with the surface that deviates from each other of second support all is equipped with the strengthening rib of protrusion in its surface.

According to some embodiments of the invention, the reinforcing rib of the first support and the reinforcing rib of the second support are just opposite to the setting.

According to the utility model discloses a some embodiments, electric core subassembly comprises a plurality of electric cores, and is same adjacent two in the electric core subassembly the electric core passes through sticky the linking to each other.

According to the utility model discloses a some embodiments, every the both ends along length direction of electric core all are equipped with utmost point ear, utmost point ear is followed the length direction of electric core stretches out unit frame.

According to some embodiments of the utility model, it is a plurality of the electric core module sets up side by side, and is a plurality of the electric core module it is a plurality of all along the utmost point ear the spaced apart setting of the array direction of electric core module, two adjacent the utmost point ear includes first utmost point ear and second utmost point ear, first utmost point ear with the second utmost point ear links to each other.

According to the utility model discloses a some embodiments, first utmost point ear be suitable for to the direction of second utmost point ear is buckled, the second utmost point ear be suitable for to the direction of first utmost point ear is buckled, so that first utmost point ear with second utmost point ear overlap joint, first utmost point ear with second utmost point ear is continuous at the overlap joint welding.

According to some embodiments of the present invention, further comprising: the flexible circuit board extends along the arrangement direction of the plurality of battery cell modules, and the plurality of battery cell modules are electrically connected with the flexible circuit board.

According to some embodiments of the utility model, the flexible circuit board is a plurality of, and is a plurality of the flexible circuit board respectively with at least part the electricity core module links to each other, and is a plurality of the electricity core module all has rather than linking to each other the flexible circuit board.

An embodiment of the second aspect of the present invention provides a battery pack, including the battery module in the above embodiment.

The advantages of the battery pack and the battery module are the same as those of the battery module in the prior art, and are not described herein again.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a battery module according to some embodiments of the present invention;

fig. 2 is an exploded view of a battery module according to some embodiments of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

figure 4 is a schematic structural view of a cell module according to some embodiments of the present invention;

figure 5 is an exploded view of a cell module according to some embodiments of the present invention;

fig. 6 is a schematic diagram of the connection of two adjacent cell modules according to some embodiments of the present disclosure;

figure 7 is a schematic diagram of a single-sided internal structure of a cell module according to some embodiments of the present invention;

fig. 8 is a tab connection schematic according to some embodiments of the present invention.

Reference numerals:

a battery module 1000; a cell module 100;

a first bracket 11; a second bracket 12; a buckle 13; a jaw 14;

a dodging hole 2; a gap 21;

a reinforcing rib 3;

an electric core 5; a tab 51; a first tab 511; a second tab 512;

an end plate 6; a binding tape 7;

a flexible circuit board 9;

a ventilation channel 10.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The present invention will be described in detail with reference to fig. 1 to 8 in conjunction with the embodiments.

As shown in fig. 1 to 8, a battery module 1000 according to an embodiment of the present invention includes a plurality of battery cell modules 100, each of the battery cell modules 100 includes a unit frame and a battery cell assembly, the battery cell assembly is disposed between two unit frames, the battery cell assembly is composed of one or more battery cells 5, the unit frames adjacent to each other of two adjacent battery cell modules 100 are connected to each other, so that the adjacent battery cell modules 100 are connected to each other, and two adjacent unit frames of two battery cell modules 100 are at least partially spaced apart to form a ventilation channel 10 between the two unit frames.

Specifically, in order to solve the problem that the integration efficiency is not high from electric core to module, the embodiment of the utility model provides a battery module 1000, wherein electric core module 100 is the component unit of battery module 1000, and a plurality of electric core modules 100 encapsulation form a holistic battery module 1000, can also be through setting up modes such as end plate 6, ribbon 7 in order to play the effect of protection electric core module 100 and firm battery module 1000. The two unit frames can be connected together through non-detachable connection such as welding and riveting, or through detachable connection such as clamping and tenon-and-mortise structures, so that the battery cell 5 is clamped between the two unit frames, the two adjacent battery cell modules 100 are connected together through the two adjacent unit frames, so as to connect the plurality of battery cell modules 100, the connection mode between the two unit frames is preferably clamping connection, specifically, the unit frames are divided into a first bracket 11 and a second bracket 12, and the battery cell 5 is arranged between the first bracket 11 and the second bracket 12; the first support 11 and the second support 12 are both provided with a buckle 13 and a clamping jaw 14, the buckle 13 and the clamping jaw 14 are arranged at intervals, the buckle 13 on the first support 11 is connected with the clamping jaw 14 on the second support 12 of the same battery cell module 100 in a clamping manner, and the clamping jaw 14 on the first support 11 is connected with the buckle 13 on the second support 12 of the adjacent battery cell module 100 in a clamping manner. Preferably, buckle 13 can carry out certain degree luffing motion to in installation and dismantlement, the utility model discloses not prescribing a limit to the thickness of jack catch 14 and buckle 13, the thickness of preferred jack catch 14 slightly is greater than or equal to buckle 13's thickness, in order to guarantee the reliability of connecting. Through buckle 13 and jack catch 14's mating means, make first support 11 and second support 1212 realize the joint and link to each other to this joint mode is convenient for operate, in some examples, jack catch 14's orientation can be equipped with the direction inclined plane rather than complex buckle 13, when buckle 13 is buckled with jack catch 14 to the direction that is close to mutually, the direction inclined plane can help buckle 13 deformation, and then be convenient for buckle 13 cover to establish outside jack catch 14, realize jack catch 14 and buckle 13's joint cooperation.

In addition, a complete channel may be completely formed between two adjacent unit frames of two battery cell modules 100 by separation, or a local joint may be provided, preferably, a local joint is provided between two adjacent unit frames of two battery cell modules 100, so as to support the battery cell modules 100 and also form the ventilation channel 10, which is favorable for heat dissipation between the battery cell modules 100.

According to the utility model discloses battery module, the unit frame that is close to mutually through two adjacent electric core modules 100 links to each other to still keep two adjacent unit frame at least parts of two electric core modules 100 apart when making adjacent electric core module 100 link to each other, with form ventilation channel 10, incorporate into battery module 1000 with the radiating part inside, the space that has both strengthened the radiating effect and has reduced the radiating part occupies, further improved from electric core to the integrated efficiency of module.

According to some embodiments of the present invention, the unit frame is divided into a first support 11 and a second support 12, the cell assembly is disposed between the first support 11 and the second support 12, and the surfaces of the first support 11 and the second support 12 of the same cell module 100, which are away from each other, are all provided with the reinforcing ribs 3 protruding from the surfaces thereof. Specifically, the structural strength of the cell module 100 can be further improved by the reinforcing ribs 3.

The utility model discloses an another optional embodiment, in same electric core module 100, also can choose a support wantonly between first support 11 and second support 12, sets up the strengthening rib of protrusion in its surface on it, and strengthening rib 3 is laminated mutually with a support of adjacent electric core module 100.

According to some embodiments of the present invention, the reinforcing ribs 3 of the first bracket 11 and the reinforcing ribs 3 of the second bracket 12 are just opposite to each other. The number of the reinforcing ribs 3 on the first support 11 and the number of the reinforcing ribs 3 on the second support 12 can be one or more, as long as the number is the same, when the number of the reinforcing ribs 3 on the first support 11 and the number of the reinforcing ribs 3 on the second support 12 are both one, the width of the reinforcing ribs 3 is smaller than the width of the first support 11 and the width of the second support 12, when the number of the reinforcing ribs is multiple, the reinforcing ribs 3 are arranged on the first support 11 and the second support 12 at intervals, that is, gaps are formed between the reinforcing ribs 3 on the same support, when the cell modules 100 are arranged side by side, the gaps between the reinforcing ribs 3 can be formed into ventilation channels for heat dissipation, the reinforcing ribs 3 on the two supports can be abutted, that is, after the battery module 1000 is assembled, the reinforcing ribs 3 on the first support 11 of one cell module 100 can be abutted against the reinforcing ribs 3 on the second support 12 of the other cell module 100, with the ventilation passageway that forms the broad between two adjacent electric core modules 100, here, the embodiment of the utility model provides a do not inject the direction, size and the position of strengthening rib, as long as guarantee can ventilate between electric core module and the electric core module can. Meanwhile, the position of the reinforcing ribs 3 is preferably staggered with the catches 13 and the claws 14 on the unit frame to achieve better ventilation and heat dissipation.

According to some embodiments of the present invention, the battery core assembly comprises a plurality of battery cells 5, and two adjacent battery cells 5 in the same battery cell module 100 are connected by gluing. The quantity of electric core 5 is preferred to be two in single electric core subassembly, through be equipped with two electric cores 5 in same electric core module 100, can avoid battery module 1000 energy density low when guaranteeing the radiating effect. Meanwhile, the two battery cores 5 can be tightly connected by gluing.

According to the utility model discloses a some embodiments, the both ends along length direction of every electric core 5 all are equipped with utmost point ear 51, and utmost point ear 51 stretches out the unit frame along the length direction of electric core 5. Specifically, as shown in fig. 5-6, the first bracket 11 and the second bracket 12 respectively comprise a first side edge, a second side edge, a third side edge and a fourth side edge, for example, the first side and the second side are respectively an upper side and a lower side of the first support 11, the third side and the fourth side are respectively a left side and a right side of the second support 12, the first side and the second side of the first support 11 are both provided with notches 21 that are open toward the second support 12 of the same cell module 100, the third side and the fourth side of the second support 12 are both provided with notches 21 that are open toward the first support 11 of the same cell module 100, when the first bracket 11 and the second bracket 12 are buckled, the gap 21 of the first bracket 11 and the gap 21 of the second bracket 12 which are positioned at the same side edge are communicated, so that the avoidance holes 2 for avoiding the tabs 51 of the battery cells 5 are formed at the end portions of the battery cell modules 100. The tabs 51 of the battery cells 5 may extend outward through the avoiding holes 2 to facilitate connection between the battery cells 5. The gap 21 can be in any size and shape, and the tab 51 is not affected to extend outwards. The tabs 51 extend out of the unit frame to facilitate connection between the tabs 51.

According to some embodiments of the present invention, the plurality of battery cell modules 100 are arranged side by side, the plurality of tabs 51 of the plurality of battery cell modules 100 are all arranged along the arrangement direction of the plurality of battery cell modules 100 in a spaced manner, two adjacent tabs 51 include a first tab 511 and a second tab 512, and the first tab (511) and the second tab 512 are connected. Specifically, as shown in fig. 5, the first tab 511 and the second tab 512 may be the tabs 51 of two different battery cells 5 in one battery cell module 100, or may be the tabs 51 of two different battery cell modules 100, as shown in fig. 6. The connection mode between the first tab 511 and the second tab 512 may be selected according to whether the battery cell modules 100 in which the first tab 511 and the second tab 512 are located are the same, and the connection relationship between the plurality of battery cell modules 100 may be parallel or serial, for example, a parallel internal connection row, a tab connection row, or the like may be used for communication, or two tabs 51 may be directly overlapped to form communication.

According to some embodiments of the present invention, the first tab 511 is suitable for bending toward the second tab 512, and the second tab 512 is suitable for bending toward the first tab 511, so that the first tab 511 and the second tab 512 are connected by welding at the joint, and the first tab 511 and the second tab 512 are connected by welding at the joint. As shown in fig. 8, the first tab 511 and the second tab 512 are directly welded to each other instead of the tabs 51 being connected by the bus bars, so that the number of parts can be reduced, the energy density of the battery module 1000 can be increased, and the cost can be reduced.

According to the utility model discloses another embodiment still includes: the flexible circuit board 9, the flexible circuit board 9 extends along the arrangement direction of the plurality of battery cell modules 100, and the plurality of battery cell modules 100 are all electrically connected with the flexible circuit board 9. Specifically, the flexible circuit board 9 can reduce the influence of vibration, eliminates the need for interface connection, and because the flexible circuit board 9 is thin and light again, can greatly reduce weight and space, it still has outstanding thermal stability and good heat dissipation simultaneously, consequently, through using the flexible circuit board 9, can improve the energy density of the battery module 1000 and protect the battery module 1000.

According to the utility model discloses a further embodiment, flexible circuit board 9 is a plurality of, and a plurality of flexible circuit board 9 link to each other with at least some electricity core module 100 respectively, and a plurality of electricity core modules all have rather than the flexible circuit board 9 that links to each other. Specifically, as shown in fig. 2, the number of the flexible circuit boards 9 is preferably two, and the two flexible circuit boards 9 are better processed than the one flexible circuit board 9 in terms of the overall dimensional tolerance and the voltage and temperature acquisition of the battery cell 5. By using the acquisition mode of the sectional acquisition of the flexible circuit board 9, the acquisition line is optimized.

The utility model also provides a battery package, including in the above-mentioned embodiment battery module 1000.

According to the utility model discloses battery package can guarantee that the heat dissipation is even, improve battery package heat dissipation rate in the battery package.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery module (1000) comprising a plurality of cell modules (100), wherein each of the cell modules (100) includes a unit frame and an electric core assembly, the electric core assembly is disposed between two of the unit frames, the electric core assembly is composed of one or more electric cores (5), the unit frames of two adjacent cell modules (100) that are close to each other are connected to each other, so that the adjacent cell modules (100) are connected to each other, and two adjacent unit frames of two cell modules (100) are at least partially spaced apart to form a ventilation channel (10) between the two unit frames.

2. The battery module according to claim 1, wherein the cell frame is divided into a first bracket (11) and a second bracket (12), the cell assembly is disposed between the first bracket (11) and the second bracket (12), and the surfaces of the first bracket (11) and the second bracket (12) of the same cell module (100) facing away from each other are each provided with a reinforcing rib (3) protruding from the surface thereof.

3. The battery module according to claim 2, wherein the reinforcing ribs (3) of the first bracket (11) and the reinforcing ribs (3) of the second bracket (12) are arranged to face each other.

4. The battery module according to claim 3, characterized in that the core assembly consists of a plurality of battery cells (5), and two adjacent battery cells (5) in one and the same battery cell module (100) are connected by gluing.

5. The battery module (1000) according to any one of claims 1-4, wherein each of the battery cells (5) is provided with tabs (51) at both ends in the length direction, and the tabs (51) extend out of the unit frame in the length direction of the battery cell (5).

6. The battery module (1000) according to claim 5, wherein a plurality of the cell modules (100) are arranged side by side, a plurality of the tabs (51) of a plurality of the cell modules (100) are arranged at intervals along the arrangement direction of a plurality of the cell modules (100), two adjacent tabs (51) comprise a first tab (511) and a second tab (512), and the first tab (511) and the second tab (512) are connected.

7. The battery module (1000) according to claim 6, wherein the first tab (511) is adapted to be bent in the direction of the second tab (512), and the second tab (512) is adapted to be bent in the direction of the first tab (511) so that the first tab (511) and the second tab (512) are overlapped, and the first tab (511) and the second tab (512) are welded together at the overlapped position.

8. The battery module (1000) according to any one of claims 1-4, further comprising: the flexible circuit board (9) extends along the arrangement direction of the battery cell modules (100), and the battery cell modules (100) are electrically connected with the flexible circuit board (9).

9. The battery module (1000) according to claim 8, wherein the flexible circuit board (9) is plural, the plural flexible circuit boards (9) are respectively connected to at least some of the cell modules (100), and the plural cell modules (100) have the flexible circuit board (9) connected thereto.

10. A battery pack, characterized by comprising the battery module (1000) according to any one of claims 1 to 9.

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