CN218472245U

CN218472245U - Shell assembly of battery and battery with same

Info

Publication number: CN218472245U
Application number: CN202222298730.7U
Authority: CN
Inventors: 陈毅滨; 常嵩; 仲亮
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Zhipeng Manufacturing Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-02-10
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a casing subassembly of battery and battery that has it, the casing subassembly of battery includes: the first cover plate is provided with at least two liquid injection holes; the first plastic, first plastic install in one side of first apron towards electric core, just first plastic is equipped with the orientation the open guiding gutter of first apron, first plastic is equipped with the water conservancy diversion hole that the diapire of guiding gutter link up, the water conservancy diversion hole be a plurality of and spaced apart distribution in first plastic. The utility model discloses a casing assembly of battery can annotate the liquid simultaneously through two at least liquid injection holes to increase unit interval's notes liquid volume, also make the inside different positions of battery receive the liquid volume to keep balanced, and electrolyte can follow the guiding gutter fast flow and follow the direct infiltration of flow direction hole to electric core inside in order to realize the infiltration to electric core, do benefit to and shorten the notes liquid time, realize the fast infiltration to electric core, and do benefit to and hold more free electrolytes.

Description

Shell assembly of battery and battery with same

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a casing subassembly of battery and battery that has it is related to.

Background

In the related technology, the conventional square-shell battery (length L is less than or equal to 300mm, winding pole group) is generally injected through a single liquid injection hole on a cover plate, namely, the cover plate surface of the battery faces upwards, a liquid injection system firstly vacuumizes the interior of the battery through the liquid injection hole, and then electrolyte is injected into the interior of the battery by utilizing pressure difference. The electrolyte flows from the liquid injection hole to the bottom of the battery under the dual actions of air pressure difference and gravity, and fills the internal gaps among the pole group, the shell and the structural member gradually. After standing for a certain time, the electrolyte fully infiltrates the pole piece and the diaphragm, and finally the pores in the battery cell are filled.

However, for a long square-shell battery (length L > 300mm, laminated pole group) with poles at both ends of the battery, when the above-mentioned electrolyte injection method for the square-shell battery is used, the volume of the long battery is larger than that of the conventional square-shell battery, the injection amount of the electrolyte is increased, the electrolyte injection time is greatly increased, the flow path of the electrolyte in the battery is lengthened, the electrolyte injection time and the standing and soaking time are further increased, and there is room for improvement.

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 utility model is to provide a casing subassembly of battery can improve and annotate liquid speed, does benefit to and shortens to annotate the liquid time, realizes infiltrating fast to electric core.

According to the utility model discloses casing assembly of battery, include: the first cover plate is provided with at least two liquid injection holes; the first plastic, first plastic install in one side of first apron towards electric core, just first plastic is equipped with the orientation the open guiding gutter of first apron, first plastic is equipped with the water conservancy diversion hole that the diapire of guiding gutter link up, the water conservancy diversion hole be a plurality of and spaced apart distribution in first plastic.

According to the utility model discloses the casing subassembly of battery, through set up two at least notes liquid holes on first apron, so that annotate the liquid hole through two at least and annotate liquid simultaneously, thereby increase unit interval's notes liquid volume, the liquid volume that receives that also makes the inside different positions of battery keeps the equilibrium, do benefit to and improve the filling speed, reduce and annotate the liquid time, and through set up guiding gutter and guiding hole on first plastic, it can follow the guiding gutter fast flow to be convenient for partial electrolyte, and another part electrolyte can follow the direct flow of guiding hole and flow to inside in order to realize the infiltration to electric core of electric core, do benefit to the flow path that increases electrolyte, and do benefit to the flow path that shortens electrolyte, and then shorten annotate the liquid time, do benefit to the realization and wet out fast to electric core, and can hold more free electrolyte in guiding gutter and guiding hole department.

According to the utility model discloses the casing subassembly of battery of some embodiments still includes: the side support, the side support in the tip of first plastic just is located the side of electric core, the tip of first plastic is equipped with the water conservancy diversion mouth that the diapire of guiding gutter link up, the side support in towards one side of electric core be equipped with the drainage groove of guiding spout intercommunication.

According to the utility model discloses the casing subassembly of battery of some embodiments, the guiding gutter is a plurality of, and is a plurality of the guiding gutter all is formed with the water conservancy diversion mouth, the drainage groove be a plurality of and respectively with a plurality of water conservancy diversion mouth one-to-one.

According to the utility model discloses the casing subassembly of battery of some embodiments, the collateral branch frame includes plate body portion and a plurality of drainage protruding muscle, and is a plurality of drainage protruding muscle spaced distribution in plate body portion, and arbitrary adjacent two the drainage protruding muscle with plate body portion is injectd the drainage groove.

According to the utility model discloses the casing subassembly of battery of some embodiments, the collateral branch frame includes the plate body portion, the plate body portion is in the orientation one side of electric core is formed with the wavy surface, and prescribes a limit to between arbitrary two adjacent crests the drainage groove.

According to the utility model discloses the casing subassembly of battery of some embodiments, first plastic is including plate body, side frame and water conservancy diversion muscle down, the side frame encircles the plate body distributes and will down the plate body with first apron is spaced apart, the side frame with the water conservancy diversion space is injectd to the plate body down, the water conservancy diversion muscle is located just injectd in the water conservancy diversion space the guiding gutter.

According to the utility model discloses the casing subassembly of battery of some embodiments, the water conservancy diversion muscle is a plurality of and will the water conservancy diversion space is injectd a plurality of the guiding gutter, every it is equipped with a plurality ofly to correspond in the guiding gutter the water conservancy diversion hole.

According to the utility model discloses the casing assembly of battery of some embodiments, first plastic is equipped with the mouth of dodging that is used for dodging utmost point ear, and is a plurality of the guiding gutter distribute in dodge the both sides of mouth.

According to the utility model discloses the casing subassembly of battery of some embodiments still includes: plastic under second apron and the second, first apron with first plastic all install in the length direction's of electric core one end, the second apron with the plastic all is located under the second the length direction's of electric core the other end, just the plastic is equipped with the orientation under the second the open sink groove of electric core.

The utility model also provides a battery.

According to the utility model discloses battery, be provided with electric core and any one of the above-mentioned embodiment the casing assembly of battery, electric core winds outward has the insulating film, just the insulating film is equipped with the drain hole.

The advantages of the battery and the housing assembly of the battery are the same as those of 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 cross-sectional view of a battery according to some embodiments of the present invention;

fig. 2 isbase:Sub>A cross-sectional view ofbase:Sub>A cell atbase:Sub>A-base:Sub>A of the battery of fig. 1;

FIG. 3 is a schematic view of a first cover plate of the battery of FIG. 1;

FIG. 4 is a schematic view of a first lower plastic of the battery of FIG. 1;

FIG. 5 is a front view of the first lower plastic of FIG. 4;

FIG. 6 is a side view of the first lower plastic of FIG. 4;

fig. 7 is a schematic view of a side bracket of a battery according to some embodiments of the present invention;

FIG. 8 is a top view of the side bracket of FIG. 7;

fig. 9 is a schematic view of a side bracket of a battery according to further embodiments of the present invention;

FIG. 10 is a top view of the side bracket of FIG. 9;

fig. 11 is a schematic diagram of an insulating film of a battery according to some embodiments of the present invention.

Reference numerals:

the battery 1000 is provided with a battery pack,

a shell assembly 100, a shell 101, a battery cell 200, an insulating film 300, a liquid guide hole 301,

a first cover plate 10, a liquid injection hole 11, an opening 12,

a first lower plastic 20, a lower plate body 21, a side frame 22, a diversion rib 23, a diversion trench 24, a diversion hole 25, a diversion port 26, an avoidance port 27,

a side bracket 30, a drainage groove 31, a plate body part 32, a drainage convex rib 33,

the second cover plate (40) is provided with a second cover plate,

a second lower plastic 50 is then applied to the lower surface of the lower plastic,

the anti-explosion valve 60 is provided with a valve body,

the liquid injection system 70 is provided with a liquid injection system,

and a tab 80.

Detailed Description

Reference will now be made in detail to 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 function 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 following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

A case assembly 100 of a battery according to an embodiment of the present invention is described below with reference to fig. 1 to 11.

As shown in fig. 1, a housing assembly 100 for a battery according to an embodiment of the present invention includes: a first cover plate 10 and a first lower plastic 20.

Specifically, the first cover plate 10 is provided with at least two liquid injection holes 11, the first lower plastic 20 is installed on one side of the first cover plate 10 facing the battery cell 200, the first lower plastic 20 is provided with a diversion trench 24 opening toward the first cover plate 10, the first lower plastic 20 is provided with a diversion hole 25 penetrating through the bottom wall of the diversion trench 24, and the diversion hole 25 is a plurality of and is distributed at intervals on the first lower plastic 20.

It can be understood that, as shown in fig. 1, the first cover plate 10 is located on one side of the first lower plastic 20 departing from the battery cell 200, the direction of the diversion trench 24 towards the first cover plate 10 is open, so that the diversion trench 24 is communicated with the liquid injection hole 11, so that when the battery 1000 is injected through the liquid injection hole 11, the electrolyte enters the diversion trench 24 along the liquid injection hole 11, and flows to the battery cell 200 along the diversion trench 24, so as to realize the infiltration of the battery cell 200, wherein, the liquid injection hole 11 is provided with at least two, so as to inject the liquid through at least two liquid injection holes 11, so as to increase the liquid injection amount per unit time, and also keep the liquid receiving amounts of different positions inside the battery 1000 balanced, which is beneficial to improving the liquid injection speed and reducing the liquid injection time.

Further, the flow guide hole 25 is formed in the bottom wall of the flow guide groove 24, so that when part of the electrolyte in the flow guide groove 24 can flow to the battery cell 200 along the flow guide groove 24, the other part of the electrolyte can directly flow to the battery cell 200 along the flow guide hole 25, so that the flow path of the electrolyte is increased, and the liquid injection time and the soaking time are shortened.

Simultaneously, through setting up guiding gutter 24 and water conservancy diversion hole 25 for plastic 20 forms hollow structure in guiding gutter 24 and water conservancy diversion hole 25 department under first, is convenient for reduce the weight and the volume of plastic 20 under, does benefit to the lightweight and the miniaturized design that realize plastic 20 under first, and does benefit to and hold more free electrolyte in guiding gutter 24 and water conservancy diversion hole 25 department.

For example, as shown in fig. 1, the casing assembly 100 includes a casing 101, a mounting space is formed in the casing 101, the battery cell 200 is adapted to be mounted in the mounting space, and the casing assembly 100 is a casing of a rectangular-shell long battery with two terminals provided with poles, the length (height in fig. 1) L of the rectangular-shell long battery is greater than 300mm, the length (height in fig. 1) L =600mm, and as shown in fig. 2, the battery cell 200 inside the rectangular-shell long battery is a laminated pole group.

For example, as shown in fig. 1, one end of the casing 101 is provided with a first cover plate 10 and a first lower plastic 20, the first cover plate 10 is located on a side of the first lower plastic 20 away from the battery cell 200, and as shown in fig. 3, the first cover plate 10 is provided with two liquid injection holes 11 and an opening 12, the opening 12 is used for avoiding a tab 80 of the battery 1000, wherein the tab 80 may be a positive tab 80 or a negative tab 80, that is, the liquid injection hole 11 may be located at a positive end or a negative end of the battery 1000, which is not limited herein.

Further, two liquid injection holes 11 are respectively located on two sides of the opening 12, and the two liquid injection holes 11 are distributed along the length direction of the first cover plate 10, as shown in fig. 4, four flow guide grooves 24 are arranged on the first lower plastic 20, the extending direction of the flow guide grooves 24 is the same as the distributing direction of the liquid injection holes 11, and the distributing direction of the flow guide grooves 24 is perpendicular to the distributing direction of the two liquid injection holes 11, wherein the bottom wall of each flow guide groove 24 is provided with a plurality of flow guide holes 25, and the plurality of flow guide holes 25 corresponding to each flow guide groove 24 are distributed along the extending direction of the flow guide grooves 24 at intervals.

It should be noted that three pouring holes 11 may be provided, and five guide grooves 24 may be provided, that is, the number of the pouring holes 11, the number of the guide grooves 24, the distribution direction of the pouring holes 11 and the distribution direction of the guide grooves 24 are merely for illustration and do not represent a limitation thereto.

During actual liquid injection, as shown in fig. 1, the liquid injection systems 70 are installed at both the two liquid injection holes 11, the liquid injection systems 70 are used for injecting electrolyte into the battery cell 200 along the liquid injection holes 11, the electrolyte in the liquid injection systems 70 enters the flow guide grooves 24 along the liquid injection holes 11, then the electrolyte flows along the extending direction of the flow guide grooves 24, and in the flowing process of the electrolyte, part of the electrolyte directly flows into the battery cell 200 along the flow guide holes 25.

From this, through setting up two notes liquid holes 11, can annotate the liquid simultaneously through two notes liquid holes 11 to increase unit interval's notes liquid volume, also make the liquid volume that receives of the inside different positions of battery 1000 keep balanced, do benefit to and improve and annotate liquid speed, reduce and annotate the liquid time, through setting up a plurality of guiding gutters 24, do benefit to the flow path who increases electrolyte, and through setting up guiding hole 25, do benefit to the flow path who shortens electrolyte, and then shorten and annotate the liquid time, do benefit to the quick infiltration of realization to electric core 200.

According to the utility model discloses casing subassembly 100 of battery, through set up two at least notes liquid hole 11 on first apron 10, so that annotate liquid hole 11 through two at least and annotate liquid simultaneously, thereby increase unit interval's notes liquid volume, the liquid volume that receives of the inside different positions of battery 1000 also keeps balanced, do benefit to the improvement and annotate liquid speed, reduce and annotate the liquid time, and through set up guiding gutter 24 and guiding hole 25 on first plastic 20, it can follow guiding gutter 24 fast flow to be convenient for partial electrolyte, and another partial electrolyte can follow guiding hole 25 and directly flow to inside in order to realize the infiltration to electric core 200 of electric core 200, do benefit to the flow path that increases electrolyte, and do benefit to the flow path that shortens and annotate the liquid time, realize the quick infiltration to electric core 200, and can hold more free electrolytes in guiding gutter 24 and guiding hole 25 department.

In some embodiments, as shown in fig. 1, the housing assembly 100 further comprises: side brackets 30.

The side bracket 30 is supported at an end of the first lower plastic 20 and located at a side of the battery cell 200, the end of the first lower plastic 20 is provided with a diversion port 26 penetrating through a bottom wall of the diversion trench 24, and the side bracket 30 is provided with a diversion trench 31 communicating with the diversion port 26 at a side facing the battery cell 200.

From this, electrolyte gets into guiding gutter 24 by annotating liquid hole 11 after, partial electrolyte flows to electric core 200 along guiding gutter 25, and another part electrolyte flows along the extending direction of guiding gutter 24, and gets into drainage groove 31 along water conservancy diversion mouth 26 for electrolyte can follow drainage groove 31 and flow on the length direction (as the direction of height in fig. 1) of electric core 200 fast, and then increases the flow path of electrolyte, in order to improve the infiltration efficiency of electrolyte to electric core 200, realize soaking fast to electric core 200.

For example, two side brackets 30 are provided, as shown in fig. 1, the two side brackets 30 respectively abut against two ends of the first lower plastic 20, and the two side brackets 30 are respectively located at two sides (left and right sides in fig. 1) of the battery cell 200, wherein the drainage grooves 31 extend along the length direction (height direction in fig. 1) of the side brackets 30, and the drainage grooves 31 are open toward the battery cell 200.

From this, electrolyte in the guiding gutter 24 can follow water conservancy diversion mouth 26 and get into respectively in the drainage groove 31 that two collateral branch framves 30 correspond, thereby along the drainage groove 31 that two collateral branch framves 30 correspond respectively at the left side and the right side of electric core 200 fast flow, on the one hand, drainage groove 31 can play the effect of drainage to electrolyte, do benefit to the flow speed that improves electrolyte, on the other hand, be convenient for increase the flow path of electrolyte, in order to improve the infiltration efficiency of electrolyte to electric core 200, shorten the infiltration time.

Of course, the side bracket 30 may be provided in plural, and is not limited herein, and it should be noted that the side bracket 30 may be a separate structural component with respect to the casing 101, that is, the side bracket 30 and the casing 101 may be separate components, which facilitates the separate design and molding of the side bracket 30, or the side bracket 30 may be directly formed as a part of the casing 101, that is, the side bracket 30 and the casing 101 may be a single component, and is not limited herein.

Furthermore, there are a plurality of flow guide grooves 24, and flow guide openings 26 are formed in each of the plurality of flow guide grooves 24, and the plurality of flow guide grooves 31 are in one-to-one correspondence with the plurality of flow guide openings 26.

That is to say, each diversion trench 24 has one corresponding diversion trench 31, for example, there are four diversion trenches 24, the end of each diversion trench 24 has diversion port 26, and each side bracket 30 has four diversion trenches 31, and four diversion trenches 31 correspond to four diversion trenches 24 one to one.

From this, make the electrolyte in every guiding gutter 24 all can follow inside the drainage groove 31 flow direction electric core 200 that corresponds to through setting up a plurality of drainage grooves 31, with the flow path that increases electrolyte, do benefit to and improve the infiltration efficiency of electrolyte to electric core 200, shorten the infiltration time.

In some embodiments, as shown in fig. 7 and 8, the side bracket 30 includes a plate portion 32 and a plurality of drainage ribs 33, the plurality of drainage ribs 33 are spaced apart from each other on the plate portion 32, and any two adjacent drainage ribs 33 define the drainage groove 31 with the plate portion 32.

From this, as shown in fig. 8, make drainage groove 31 form the recess that the cross-section is square, be convenient for form into the lateral wall of drainage groove 31 through drainage protruding muscle 33 to play the effect of direction and drainage to electrolyte, guarantee that electrolyte can follow the side and the bottom of drainage groove 31 flow direction battery 1000 smoothly.

In other embodiments, as shown in fig. 9, the side bracket 30 includes a plate portion 32, and as shown in fig. 10, the plate portion 32 is formed with a wavy surface on a side facing the battery cell 200, and a drainage groove 31 is defined between any two adjacent wave crests.

From this, as shown in fig. 8 for drainage groove 31 is injectd by arbitrary two adjacent crests, is convenient for play the effect of direction and drainage through drainage groove 31 to electrolyte, and does benefit to the design degree of difficulty that reduces drainage groove 31, reduction in production cost.

In still other embodiments, the cross-section of the drainage groove 31 can be configured in other shapes, and is not limited herein.

In some embodiments, as shown in fig. 4 to 6, the first lower plastic 20 includes a lower plate 21, side frames 22 and a diversion rib 23, the side frames 22 are distributed around the lower plate 21 and separate the lower plate 21 from the first cover plate 10, the side frames 22 and the lower plate 21 define a diversion space, and the diversion rib 23 is disposed in the diversion space and defines a diversion trench 24.

It can be understood that the side frame 22 is used to separate the lower plate 21 from the first cover plate 10, so that the side frame 22, the first cover plate 10 and the lower plate 21 together define a diversion space, and the diversion space is communicated with the liquid injection hole 11, wherein the diversion rib 23 is disposed in the diversion space, for example, the diversion rib 23 is disposed on one side of the lower plate 21 facing the first cover plate 10, so as to separate the diversion space into a plurality of diversion grooves 24.

Therefore, after the electrolyte enters the flow guide grooves 24 from the electrolyte injection hole 11, the electrolyte can flow along the flow guide grooves 24 respectively, so that the flow path of the electrolyte is increased, and the electrolyte injection time is favorably shortened.

Further, as shown in fig. 4, the flow guiding ribs 23 are plural and define a flow guiding space into a plurality of flow guiding grooves 24, and a plurality of flow guiding holes 25 are correspondingly formed in each flow guiding groove 24.

From this, when electrolyte flowed in guiding gutter 24, partial electrolyte can follow corresponding water conservancy diversion hole 25 and flow to electric core 200 to the realization is to electric core 200's infiltration, thereby through setting up water conservancy diversion hole 25, with the direct direction electric core 200 of partial electrolyte in the guiding gutter 24, is convenient for shorten the flow path of electrolyte, and then shortens and annotates the liquid time, and does benefit to the realization and soaks fast electric core 200.

In some embodiments, as shown in fig. 4, the first lower plastic 20 is provided with an avoidance port 27 for avoiding the tab 80, and the plurality of flow channels 24 are distributed on both sides of the avoidance port 27.

From this, be convenient for reduce guiding gutter 24's the processing degree of difficulty, and make electrolyte can flow fast in the both sides of utmost point ear 80 to make the electrolyte of utmost point ear 80 both sides more even.

In some embodiments, as shown in fig. 1, the battery case assembly 100 further includes: a second cover plate 40 and a second lower plastic 50.

Specifically, the first cover plate 10 and the first lower plastic 20 are both mounted at one end (e.g., the upper end in fig. 1) of the battery cell 200 in the length direction, the second cover plate 40 and the second lower plastic 50 are both located at the other end (e.g., the lower end in fig. 1) of the battery cell 200 in the length direction, and the second lower plastic 50 is provided with a sink slot opening toward the battery cell 200.

From this, through set up the heavy cistern under the second on plastic 50 to when electrolyte got into battery 1000 inside along annotating liquid hole 11, the heavy cistern can accommodate partial free electrolyte, with the reinforcing to the infiltration effect of the bottom of electric core 200, and do benefit to when the loss appears in the inside electrolyte of electric core 200, can utilize the free electrolyte in the heavy cistern to supply.

For example, as shown in fig. 1, the first cover plate 10 and the first lower plastic 20 are both mounted at the upper end of the battery 1000, the second cover plate 40 and the second lower plastic 50 are both mounted at the lower end of the battery 1000, the second lower plastic 50 is located at a side of the second cover plate 40 facing the battery cell 200, and the second cover plate 40 is further provided with an explosion-proof valve 60, so as to protect the battery 1000.

It should be noted that the specific structure of the second lower plastic 50 may be the same as the specific structure of the first lower plastic 20, that is, the structure of the immersion tank of the second lower plastic 50 may be the same as the structure of the diversion trench 24 of the first lower plastic 20, so as to reduce the difficulty in producing the second lower plastic 50, and of course, the structure of the immersion tank may also be different from the structure of the diversion trench 24, that is, the structure of the immersion tank may be designed separately, which is not limited herein.

The utility model also provides a battery 1000.

According to the embodiment of the present invention, the battery 1000 is provided with the battery cell 200 and the housing assembly 100 of the battery in any one of the above embodiments, the insulating film 300 is wound outside the battery cell 200, and as shown in fig. 11, the insulating film 300 is provided with the liquid guiding hole 301.

That is to say, the insulating film 300 is coated outside the battery cell 200, and the insulating film 300 is provided with the liquid guiding hole 301, so that when the liquid is injected into the battery 1000, the electrolyte can enter the battery cell 200 along the liquid guiding hole 301 on the insulating film 300, so as to infiltrate the battery cell 200, thereby increasing the flow path of the electrolyte and shortening the infiltration time.

It should be noted that the present invention provides a battery 1000 which is a square-shell long battery, the length (height in fig. 1) L of the square-shell long battery is greater than 300mm, the length (height in fig. 1) L =600mm, and as shown in fig. 2, the battery cell 200 inside the battery is a laminated pole group, and since the laminated pole group is wound relatively to the pole group, the gap between the pole group and the side portion of the housing is compressed, resulting in the flow channel of the electrolyte being reduced.

And the utility model discloses in, through set up drain hole 301 on insulating film 300, make electrolyte after getting into the drain groove, partial electrolyte can follow the inside infiltration in order to realize electric core 200 of the direct flow direction electric core 200 of water

conservancy diversion hole

25, 24 rapid flow to drainage groove 31 of diversion groove can be followed to another part electrolyte, and when electrolyte flowed in drainage groove 31, partial electrolyte in the drainage groove 31 can be followed the drain hole 301 of insulating film 300 and directly got into inside electric core 200, thereby increase the flow path of electrolyte, in order to realize the infiltration to electric core 200.

From this, through set up drain hole 301 on insulating film 300, can make full use of the space between insulating film 300 and the casing, and increased the flow path of electrolyte for inside partial electrolyte can directly get into electric core 200 along the drain hole 301 of insulating film 300, thereby do benefit to and shorten the notes liquid time, and do benefit to the realization and soak fast electric core 200.

According to the utility model discloses the battery, its casing subassembly 100 is through setting up two at least notes liquid hole 11 on first apron 10, so that annotate liquid hole 11 through two at least and annotate liquid simultaneously, thereby increase unit interval's notes liquid volume, the liquid volume that receives of also making the inside different positions of battery 1000 keeps balanced, do benefit to and improve and annotate liquid speed, reduce and annotate the liquid time, and through set up guiding gutter 24 and guiding hole 25 on first plastic 20, it can follow guiding gutter 24 fast flow to be convenient for partial electrolyte, and another partial electrolyte can follow guiding hole 25 and directly flow to inside in order to realize the infiltration to electric core 200 of electric core 200, do benefit to the flow path that increases electrolyte, and do benefit to and shorten the flow path of electrolyte, and then shorten the liquid time of annotating, realize the quick infiltration to electric core 200, and can hold more free electrolytes in guiding gutter 24 and guiding hole 25 department.

An embodiment of the battery 1000 of the present invention is described below with reference to fig. 1, 7, and 8:

the battery 1000 is configured as a square-casing battery, and the length (height in fig. 1) L =600mm of the square-casing battery, and the positive pole (tab 80) and the negative pole (tab 80) are respectively located on the cover plates on both sides in the length direction of the battery 1000, wherein one of the cover plates (first cover plate 10) has 2 liquid injection holes 11. In the process after the square-shell battery is produced, the electrolyte injection system 70 simultaneously vacuumizes and injects the battery 1000 through the 2 electrolyte injection holes 11, wherein the electrolyte enters the battery 1000 through the electrolyte injection holes 11, under the action of the diversion trench 24 of the first lower plastic 20, a part of the electrolyte enters the battery cell 200 through the diversion hole 25, the other part of the electrolyte enters the drainage trench 31 of the side support 30 through the diversion port 26 of the diversion trench 24, and reaches each edge of the side edge of the battery cell 200 and the bottom of the battery 1000 along the rectangular drainage trench 31, so as to quickly wet the periphery of the battery cell 200.

Because annotate the liquid speed and be greater than electric core 200 wetting speed, along with annotating going on of liquid, the free electrolyte of space filling gradually between casing and the electric core 200, at this moment, free electrolyte passes through drain hole 301 on insulating film 300, can further wet electric core 200 in the equidirectional not, has finally shortened notes liquid and has soaked the time greatly.

Another embodiment of the battery 1000 of the present invention is described in conjunction with fig. 1, 9 and 10:

the battery 1000 is configured as a square-casing battery, and the length (height in fig. 1) L =600mm of the square-casing battery, and the positive pole (tab 80) and the negative pole (tab 80) are respectively located on the cover plates at both sides in the length direction of the battery 1000, wherein one cover plate (first cover plate 10) has 2 liquid injection holes 11. In the post-process of the production of the square-shell battery, the liquid injection system 70 simultaneously performs vacuum-pumping and liquid injection on the battery 1000 through the 2 liquid injection holes 11. Electrolyte enters the interior of the battery 1000 through the electrolyte injection hole 11, under the action of the diversion trench 24 of the first lower plastic 20, a part of electrolyte enters the interior of the battery cell 200 through the diversion hole 25, and the other part of electrolyte enters the diversion trench 31 of the side bracket 30 through the diversion port 26 of the diversion trench 24 and reaches all the edges of the side edge of the battery cell 200 and the bottom of the battery 1000 along the wave-shaped diversion trench 24, so that the periphery of the battery cell 200 is wetted rapidly.

Because the liquid injection speed is greater than the wetting speed of the battery cell 200, along with the liquid injection, the gap between the shell and the battery cell 200 is gradually filled with free electrolyte, the free electrolyte passes through the liquid guide hole 301 on the insulating film 300, the battery cell 200 can be further wetted in different directions, and finally, the liquid injection and wetting time is greatly shortened.

Of course, the battery 1000 may be a conventional square-casing battery or other type of battery, and the cross-sectional shape of the drainage groove 31 is not limited to the two embodiments, for example, the cross-sectional shape of the drainage groove 31 may also be triangular or other shapes, and is not limited thereto.

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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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

1. A housing assembly for a battery, comprising:

the liquid injection device comprises a first cover plate (10), wherein the first cover plate (10) is provided with at least two liquid injection holes (11);

first plastic (20) down, first plastic (20) install in first apron (10) are towards one side of electric core (200), just first plastic (20) are equipped with towards first apron (10) open guiding gutter (24), first plastic (20) are equipped with down guiding hole (25) that the diapire of guiding gutter (24) link up, guiding hole (25) be a plurality of and spaced apart distribution in first plastic (20) down.

2. The battery housing assembly of claim 1, further comprising: the side support (30), the side support (30) support in the tip of first plastic (20) just is located the side of electricity core (200), the tip of first plastic (20) is equipped with water conservancy diversion mouth (26) that the diapire of guiding gutter (24) link up, side support (30) is in the orientation one side of electricity core (200) be equipped with drainage groove (31) that guiding mouth (26) communicate.

3. The battery case assembly of claim 2, wherein the flow guide grooves (24) are plural, and the flow guide openings (26) are formed in the plural flow guide grooves (24), and the flow guide grooves (31) are plural and correspond to the plural flow guide openings (26) one by one, respectively.

4. The battery case assembly of claim 2, wherein the side bracket (30) comprises a plate body portion (32) and a plurality of drainage ribs (33), the drainage ribs (33) are distributed on the plate body portion (32) at intervals, and any two adjacent drainage ribs (33) and the plate body portion (32) define the drainage grooves (31).

5. The battery case assembly of claim 2, wherein the side bracket (30) comprises a plate body portion (32), the plate body portion (32) is formed with a wavy surface on a side facing the battery cell (200), and the drainage groove (31) is defined between any two adjacent wave crests.

6. The battery casing assembly according to claim 1, wherein the first lower plastic (20) comprises a lower plate body (21), side frames (22) and flow guiding ribs (23), the side frames (22) are distributed around the lower plate body (21) and space the lower plate body (21) from the first cover plate (10), the side frames (22) and the lower plate body (21) define a flow guiding space, and the flow guiding ribs (23) are arranged in the flow guiding space and define the flow guiding grooves (24).

7. The housing assembly of battery as claimed in claim 6, wherein the flow guiding ribs (23) are plural and define the flow guiding space into plural flow guiding grooves (24), and each flow guiding groove (24) is provided with plural flow guiding holes (25) therein.

8. The battery casing assembly according to claim 7, wherein the first lower plastic (20) is provided with an avoiding opening (27) for avoiding a tab (80), and the flow guide grooves (24) are distributed on two sides of the avoiding opening (27).

9. The battery housing assembly of claim 1, further comprising: plastic (50) under second apron (40) and the second, first apron (10) with first plastic (20) all install in the length direction's of electric core (200) one end down, second apron (40) with plastic (50) all are located under the second the length direction's of electric core (200) the other end, just plastic (50) are equipped with the orientation under the second electric core (200) the open sink groove.

10. A battery, characterized in that a cell (200) and a housing assembly (100) of the battery according to any one of claims 1 to 9 are provided, an insulating film (300) is wound around the cell (200), and the insulating film (300) is provided with a liquid guiding hole (301).