阅读说明：本技术 动力电池总成及汽车 (Power battery assembly and automobile ) 是由 杜智 李彬 韦映竹 黄可贤 黄武荣 于 2021-07-21 设计创作，主要内容包括：本发明公开一种动力电池总成及汽车。动力电池总成包括固定组件和电芯组件,固定组件包括固定杆以及相对间隔设置的二个模组固定端板,电芯组件包括多个单体电芯以及依次间隔排列的多个电芯夹板,任意相邻的二个电芯夹板之间设有一单体电芯,多个电芯夹板均设于二个固定端板之间,电芯夹板的两侧面分别向内凹陷形成第一风道与第二风道,固定杆两端分别用于与二个模组固定端板连接,以使二个固定端板锁紧电芯夹板和单体电芯。本发明的动力电池总成能够使得电芯单体充分散热。(The invention discloses a power battery assembly and an automobile. The power battery assembly comprises a fixing assembly and an electric core assembly, the fixing assembly comprises two module fixing end plates arranged at a fixed rod and a relative interval, the electric core assembly comprises a plurality of monomer electric cores and a plurality of electric core clamping plates arranged at intervals in sequence, a monomer electric core is arranged between any two adjacent electric core clamping plates, the electric core clamping plates are all arranged between the two fixing end plates, two side faces of the electric core clamping plates are inwards sunken to form a first air channel and a second air channel respectively, two ends of the fixed rod are used for being connected with the two module fixing end plates respectively, and therefore the two fixing end plates are used for locking the electric core clamping plates and the monomer electric cores. The power battery assembly provided by the invention can enable the battery cell monomer to fully dissipate heat.)

1. A power battery assembly, comprising:

the fixing assembly comprises a fixing rod and two module fixing end plates which are arranged at intervals oppositely;

the battery cell subassembly, the battery cell subassembly includes a plurality of monomer electricity cores and a plurality of electric core splint of interval arrangement in proper order, arbitrary adjacent two be equipped with one between the electric core splint monomer electricity core, it is a plurality of two are all located to electric core splint between the fixed end plate of module, the both sides face of electric core splint inwards caves in respectively and forms first wind channel and second wind channel, the dead lever both ends are used for respectively with two the fixed end plate of module is connected, so that two the fixed end plate of module locks electric core splint with monomer electricity core.

2. The power battery assembly of claim 1, wherein the first air channel and the second air channel are staggered with respect to each other.

3. The power battery assembly of claim 2, wherein the first air channel and the second air channel on both sides of the cell clamping plate are in communication along a thickness direction of the cell clamping plate.

4. The power battery assembly according to claim 3, wherein the first air duct includes a plurality of first sub-air ducts arranged at intervals, the second air duct includes a plurality of second sub-air ducts arranged at intervals, and the first sub-air ducts and the second sub-air ducts are arranged alternately and are communicated with each other along a connecting line of the two module fixing end plates.

5. The power battery assembly of claim 1, wherein the cell clamping plate is provided with a plurality of fixing portions, and the single cell is disposed in the accommodating space surrounded by the plurality of fixing portions and abuts against the fixing portions.

6. The power battery assembly of claim 5, wherein the fixing portion is disposed at a peripheral corner of the cell clamping plate, and a clamping groove for clamping the corner of the single cell is disposed on the fixing portion.

7. The power battery assembly of any one of claims 1-6, wherein a mounting hole is formed through the cell clamping plate, and the fixing rod sequentially passes through the mounting holes of the plurality of cell clamping plates.

8. The power battery assembly of any one of claims 1 to 6, further comprising a box and a blower, wherein an air inlet and an air outlet are respectively disposed at two opposite sides of the box, the fixing assembly and the battery core assembly are both disposed in the box, the battery core clamping plates are sequentially arranged between the air inlet and the air outlet at intervals, and the blower is disposed at the air outlet.

9. The power battery assembly of claim 8, further comprising a cover disposed on the housing, wherein ventilation gaps are provided between the cell assembly and the bottom of the housing and between the cell assembly and the cover.

10. An automobile, characterized in that the automobile comprises a power battery assembly according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of automobiles, in particular to a power battery assembly and an automobile.

Background

With the continuous improvement of environmental protection standards, the new energy automobile has increasingly increased yield as the trend of mass consumption. However, due to the electrochemical characteristics of the power battery in the new energy automobile, the single battery cell of the power battery is charged and discharged with high strength under a complex working condition, and a large amount of heat collected is easily generated. At present, a natural cooling mode is usually adopted to dissipate heat of a single battery cell of a power battery, but the mode cannot fully dissipate heat of the single battery cell of the power battery.

In view of the above-mentioned drawbacks, it is necessary to provide a new power battery assembly and a vehicle.

Disclosure of Invention

The invention mainly aims to provide a power battery assembly and an automobile, and aims to solve the problem that a single battery cell in a power battery cannot sufficiently dissipate heat.

In order to achieve the purpose, the power battery assembly provided by the invention comprises a fixing assembly and a battery assembly, wherein the fixing assembly comprises a fixing rod and two module fixing end plates which are oppositely arranged at intervals, the battery assembly comprises a plurality of single battery cores and a plurality of battery core clamping plates which are sequentially arranged at intervals, one single battery core is arranged between any two adjacent battery core clamping plates, the plurality of battery core clamping plates are arranged between the two module fixing end plates, two side surfaces of each battery core clamping plate are respectively sunken inwards to form a first air duct and a second air duct, and two ends of the fixing rod are respectively used for being connected with the two module fixing end plates so that the two module fixing end plates lock the battery core clamping plates and the single battery cores.

Preferably, the first air duct and the second air duct are arranged in a staggered manner.

Preferably, the first air duct and the second air duct on two sides of the cell clamping plate are communicated along the thickness direction of the cell clamping plate.

Preferably, the first air duct includes a plurality of first sub-air ducts arranged at intervals, the second air duct includes a plurality of second sub-air ducts arranged at intervals, and the first sub-air ducts and the second sub-air ducts are arranged in a staggered manner and communicated along the direction of the connecting line of the module fixing end plates.

Preferably, the battery cell clamping plate is provided with a plurality of fixing portions, and the single battery cells are arranged in the accommodating space surrounded by the fixing portions and abutted to the fixing portions.

Preferably, the fixed part is arranged at the peripheral corner of the cell clamping plate, and a clamping groove for clamping the corner of the single cell is formed in the fixed part.

Preferably, a mounting hole is formed in the cell clamping plate in a penetrating manner, and the fixing rod sequentially penetrates through the mounting holes in the cell clamping plates.

Preferably, the power battery assembly further comprises a box body and a fan, wherein an air inlet and an air outlet are respectively formed in two opposite sides of the box body, the fixing component and the battery cell component are arranged in the box body, the battery cell clamping plates are sequentially arranged between the air inlet and the air outlet at intervals, and the fan is arranged at the position of the air outlet.

Preferably, the power battery assembly further comprises a box cover arranged on the box body, and the electric core assemblies respectively have ventilation gaps with the bottom of the box body and the box cover.

Preferably, the automobile comprises the power battery assembly.

According to the technical scheme, the power battery assembly comprises a fixing component and a battery core component, the fixing component comprises a fixing rod and two module fixing end plates, the battery core component comprises a plurality of single battery cores and a plurality of battery core clamping plates, two side faces of the battery core clamping plates are respectively sunken inwards to form a first air channel and a second air channel, the power battery assembly is assembled, the plurality of battery core clamping plates are sequentially arranged at intervals, a single battery core is arranged between any two adjacent battery core clamping plates, the module fixing end plates are respectively arranged on the outer sides of the battery core clamping plates at two ends, the two module fixing end plates are arranged at intervals, and two ends of the fixing rod are respectively connected with the two module fixing end plates so that the battery core clamping plates and the single battery cores can be locked by the two module fixing end plates. Because the cell clamping plates are arranged between the single cells and the two sides of the cell clamping plates are respectively sunken inwards to form the first air channel and the second air channel, when the power battery assembly works, the heat emitted by the single cells is timely taken out through the air in the first air channels and the air in the second air channels on the two sides of the power battery assembly, and therefore the single cells of the power battery assembly can be fully radiated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is an exploded view of a power battery assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a power battery assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a cell clamping plate according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an electrical core assembly according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a powertrain according to an embodiment of the invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Fixing assembly	223	Fixing part
11	Fixing rod	2231	Clamping groove
				12	Module fixing end plate	224	Mounting hole
2	Electricity core subassembly	3	Box body
				21	Monomer electric core	31	Air inlet
22	Cell clamping plate	32	Air outlet
				221	First air duct	4	Fan blower
222	Second air duct	5	Box cover

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a power battery assembly and an automobile, and aims to solve the problem that a single battery cell in a power battery cannot sufficiently dissipate heat.

Please refer to fig. 1 to fig. 3 in combination, the power battery assembly includes a fixing assembly 1 and an electric core assembly 2, the fixing assembly 1 includes a fixing rod 11 and two module fixing end plates 12 disposed at opposite intervals, the electric core assembly 2 includes a plurality of single electric cores 21 and a plurality of electric core clamping plates 22 arranged at intervals in sequence, a single electric core 21 is disposed between any two adjacent electric core clamping plates 22, the plurality of electric core clamping plates 22 are disposed between the two module fixing end plates 12, two side surfaces of the electric core clamping plates 22 are respectively recessed inwards to form a first air channel 221 and a second air channel 222, two ends of the fixing rod 11 are respectively used for being connected with the two module fixing end plates 12, so that the two module fixing end plates 12 lock the electric core clamping plates 22 and the single electric cores 21.

The power battery assembly comprises a fixing assembly 1 and a battery assembly 2, wherein the fixing assembly 1 comprises a fixing rod 11 and two module fixing end plates 12, the battery assembly 2 comprises a plurality of single battery cores 21 and a plurality of battery core clamping plates 22, two side surfaces of each battery core clamping plate 22 are respectively sunken inwards to form a first air channel 221 and a second air channel 222, the power battery assembly is assembled, the plurality of battery core clamping plates 22 are sequentially arranged at intervals, a single battery core 21 is arranged between any two adjacent battery core clamping plates 22, the module fixing end plates 12 are respectively arranged on the outer sides of the battery core clamping plates 22 at two ends, so that the two module fixing end plates 12 are oppositely arranged at intervals, two ends of the fixing rod 11 are respectively connected with the two module fixing end plates 12, in one embodiment, two ends of the fixing rod 11 are provided with threaded holes, four fixing rods 11 penetrate through the module fixing end plates 12, and are screwed from the end parts of the fixing rod 11 to the middle position close to the fixing rod 11 through locking nuts, until the two module fixing end plates 12 clamp the cell clamping plates 22 and the single cells 21. Because the cell clamping plate 22 is separated between the single cells 21 and the single cells 21, and two sides of the cell clamping plate 22 are respectively recessed inwards to form the first air channel 221 and the second air channel 222, when the power battery assembly of the invention works, heat emitted by the single cells 21 is timely taken out through air in the first air channel 221 and air in the second air channel 222 at two sides of the power battery assembly, so that the single cells 21 of the power battery assembly can be fully radiated. In addition, the electric core of the power battery assembly of the invention is locked through the electric core clamping plate 22, the bonding form between the traditional electric core and the insulation plate is replaced, the recycling rate of the electric core is increased, and the maintenance of the power battery assembly is simpler. It should be noted that, in the present invention, the first air duct 221 and the second air duct 222 are integrated on the cell clamping plate 22, so that the contact area between the cell and the air can be increased, and not only can the temperature of the cell be quickly reduced, but also the temperature of the cell can be quickly raised, and a person skilled in the art can raise or lower the temperature of the cell according to actual situations.

As shown in fig. 3, as an embodiment, the first air ducts 221 and the second air ducts 222 are disposed in a staggered manner. In order to make the heat dissipation of the battery core of the power battery assembly more uniform and the heat dissipation rate higher, the first air ducts 221 and the second air ducts 222 are arranged in a staggered manner. The battery cell is clamped between two adjacent battery cell clamping plates 22, namely, the first air duct 221 of one battery cell clamping plate 22 is adjacent to the battery cell, the second air duct 222 of the other battery cell clamping plate 22 is adjacent to the battery cell, and the first air duct 221 and the second air duct 222 are arranged in a mutually staggered mode, so that the contact part of the battery cell and the first air duct 221 and the contact part of the battery cell and the second air duct 222 are staggered, the contact area of the battery cell and flowing air is increased, the heat dissipation of the battery cell is more uniform, and the heat dissipation rate is higher.

Further, the first air duct 221 and the second air duct 222 on both sides of the cell clamping plate 22 communicate with each other in the thickness direction of the cell clamping plate 22. In order to ensure that the heat dissipation of the power battery assembly is more uniform and the heat dissipation efficiency is higher, the first air duct 221 and the second air duct 222 on the two sides of the cell clamping plate 22 are communicated along the thickness direction of the cell clamping plate 22, and the flowing air on one side of the cell clamping plate 22 and the flowing air on the other side of the cell clamping plate 22 can spread the temperature mutually, so that the temperature change of the single cells 21 on the two sides of the cell clamping plate 22 can be kept consistent.

In addition, in an embodiment, the first air duct 221 includes a plurality of first sub-air ducts arranged at intervals, and the second air duct 222 includes a plurality of second sub-air ducts arranged at intervals, and the first sub-air ducts and the second sub-air ducts are arranged alternately and are communicated along a connecting line direction of the two module fixing end plates 12. In order to enable the single battery cell 21 to dissipate heat quickly, the first air duct 221 includes a plurality of first sub-air ducts, the second air duct 222 includes a plurality of second sub-air ducts, the contact surface between the single battery cell 21 and the flowing air is larger by the plurality of first sub-air ducts and the plurality of second sub-air ducts on both sides of the single battery cell 21, so that heat can be dissipated quickly, and the plurality of first sub-air ducts are arranged at intervals, the plurality of second sub-air ducts are arranged at intervals, and the first sub-air ducts and the second sub-air ducts are arranged in a staggered manner, so that both sides of the single battery cell 21 are contacted with the flowing air more uniformly, so that heat dissipation of the single battery cell 21 is more uniform, furthermore, the first sub-air ducts and the second sub-air ducts are communicated along the connecting line direction of the two module fixing end plates 12, so that temperature changes of the single battery cells 21 on both sides of the battery cell clamping plate 22 are kept consistent.

As shown in fig. 4, the cell clamping plate 22 is provided with a plurality of fixing portions 223, and the individual cells 21 are disposed in the accommodating space surrounded by the plurality of fixing portions 223 and abut against the fixing portions 223. In order to make the monomer electricity core 21 can be fixed firm, electric core splint 22 is equipped with a plurality of fixed parts 223, during the equipment power battery assembly, locate the accommodation space that a plurality of fixed parts 223 surrounded with monomer electricity core 21 in, monomer electricity core 21 all around with fixed part 223 butt to when making dead lever 11 lock, monomer electricity core 21 can not be along the radial variable position of dead lever 11, made things convenient for the assembly of power battery assembly, improved assembly efficiency.

Further, in order to realize multiple functions, the fixing portion 223 is disposed at a peripheral corner of the cell clamping plate 22, and a clamping groove 2231 for clamping a corner of the single cell 21 is disposed on the fixing portion 223. In this embodiment, the fixed portion 223 is located the periphery corner of electric core splint 22, corresponds the card in the draw-in groove 2231 of fixed portion 223 with the corner of monomer electricity core 21, because the corner position of monomer electricity core 21 has better rigidity to through this kind of installation, make monomer electricity core 21 can be fixed firm when the assembly, and difficult quilt destroys.

In addition, as shown in fig. 3, in the above embodiment, the cell clamping plates 22 are provided with mounting holes 224, and the fixing rods 11 sequentially pass through the mounting holes 224 of the cell clamping plates 22. In order to obtain better installation effect, the last mounting hole 224 of having seted up of battery core splint 22 runs through, the dead lever 11 passes mounting hole 224 on a plurality of battery core splint 22 in proper order, rethread fastening nut screws up, make battery core splint 22 can firmly be locked between module fixed end plate 12, because the dead lever 11 all passes mounting hole 224 on the battery core splint 22, when in the face of the complicated service environment of operating mode, battery core splint 22 can not deviate from between module fixed end plate 12, thereby the reliability of power battery assembly and the life who has prolonged the power battery assembly have been guaranteed.

In an embodiment, please refer to fig. 5, the power battery assembly further includes a box 3 and a blower 4, an air inlet 31 and an air outlet 32 are respectively disposed at two opposite sides of the box 3, the fixing component 1 and the cell component 2 are both disposed in the box 3, the plurality of cell clamping plates 22 are sequentially arranged between the air inlet 31 and the air outlet 32 at intervals, and the blower 4 is disposed at the air outlet 32. In this embodiment, the power battery assembly further includes a box 3 and a fan 4, the fixed component 1 and the battery cell assembly 2 are all disposed in the box 3, the air inlet 31 and the air outlet 32 are respectively disposed on two opposite sides of the box 3, the plurality of battery cell clamping plates 22 are sequentially arranged between the air inlet 31 and the air outlet 32 at intervals, the fan 4 is fixed at the position of the air outlet 32, an air inlet port of the fan 4 is communicated with the air outlet 32, when the fan 4 works, air enters the box 3 from the air inlet 31 of the box 3 and passes through the first sub-air duct and the second sub-air duct on the battery cell clamping plate 22, the air outlet 32 of the box 3 is sucked into the air inlet port of the fan 4, and the air is blown out from an air outlet port of the fan 4.

Further, power battery assembly still includes and locates the case lid 5 on box 3, and electric core subassembly 2 all has ventilation gap respectively with the bottom of box 3 and between the case lid 5. In one embodiment, the power battery assembly further comprises a box cover 5, the cell assembly 2 is installed in the box body 3 and forms a ventilation gap with the bottom of the box body 3, the box cover 5 is covered on the box body 3, and a ventilation gap is also formed between the cell assembly 2 and the box cover 5. When the power battery works, cooling air enters the box body 3 from the air inlet 31 of the box body 3 and passes through a ventilation gap between the bottom of the box body 3 and the battery cell assembly 2, so that the wind resistance and the wind quantity are balanced, the wind quantity between every two adjacent battery cell clamping plates 22 is uniformly distributed, the cooling air passes through the first air channel 221 and the second air channel 222 from bottom to top, the heat of the single battery cells 21 is taken away, the cooling air enters the passing gap between the box cover 5 and the battery cell assembly 2, and finally the cooling air is sucked out by the fan 4 through the air outlet 32.

In addition, the invention also provides an automobile which comprises all the technical characteristics of the power battery assembly and has all the technical effects of the power battery assembly, and the details are not repeated herein.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.