CN209571443U - Battery modules - Google Patents

Abstract

The utility model provides a kind of battery modules, includes multiple batteries, a battery bracket, multiple electrodes piece, a shell and an at least plate washer.Battery bracket is to the multiple batteries of fixation.Multiple electrodes piece is respectively arranged at the both ends of multiple batteries, be electrically connected multiple batteries in parallel or in series.Shell is to set battery bracket, multiple electrodes piece and multiple batteries.At least a plate washer is arranged to face to battery bracket.Moreover, having defined at least one between an at least plate washer and shell leads flame channel.

Description

Battery modules

Technical field

The utility model can effectively lead the battery modules of flame especially with respect to one kind about a kind of battery modules.

Background technique

Fig. 1 shows the schematic diagram of the battery modules of the prior art.As shown in Figure 1, existing battery modules 100 include a shell 110, a battery bracket 121 and multiple batteries 131.Shell 110 include a first shell 111 and a second shell 112, first Shell 111 and second shell 112 define a storage space, to store battery bracket 121 and each battery 131.Battery branch Frame 121 is to each battery 131 of fixation, more specifically, in an embodiment, can more define multiple accommodating spaces to Accommodate each battery 131.

As user is higher and higher for battery capacity demand, the energy density of battery 131 is also increased.But It is, according to the prior art, when internal short-circuit occurs for battery 131, and huge energy generates explosive flame flame eruption, because outer The barrier of shell 110 is not easy flame in 100 inner dissipation of battery modules, and then alters and burn adjacent cells core 131, and causes neighbouring Battery 131 generates subsequent explosion；Or gas is generated in the shell 110 as encapsulating shell, be filled in encapsulating shell gas and When can not be discharged, then the internal pressure of power battery core 131 can increase extremely, and explode；Or explosive flame directly sprays Be dealt into outside battery modules 100, and light external equipment or substance, cause neighbouring external equipment or substance generate second-time burning or Explosion.

China Patent Publication No. CN101136460A discloses a kind of exhaust port backfire detonation structure, is by great Gai and row Gas lid both sides symmetrically seal, and form gas passage.

In addition, also gas is discharged using locating piece or exhaust valve, but locating piece or exhaust according to other traditional designs Valve can not effectively dissipate flame, and still having is not easy flame in 100 inner dissipation of battery modules, and then alters and burn adjacent cells core 131, and cause adjacent cells core 131 and generate subsequent explosion；Or explosive flame is directly erupted to outside battery modules 100, and point External equipment or substance are fired, causes neighbouring external equipment or substance leads to the problem of second-time burning or explosion.

Therefore, how effectively dissipate flame, and can simplify processing procedure and reduce cost, is the problem of present value must be inquired into.

Utility model content

The one of the utility model is designed to provide a kind of battery modules that can effectively lead flame.The utility model it is another A kind of battery modules are designed to provide, lead flame channel with extended, can be cooled down in leading flame channel using flame, be subtracted Few flame is to externalities, to improve safety.

According to an embodiment of the present invention, a kind of battery modules include:

Multiple batteries；

One battery bracket, battery bracket are capable of fixing each battery；

Multiple electrodes piece, multiple electrodes piece are respectively arranged at the both ends of multiple batteries, and multiple electrodes piece can make multiple electricity Chi Xin is electrically connected in parallel or in series；

One shell, shell energy set battery bracket, each electrode slice and each battery；And

An at least plate washer, at least a plate washer are arranged to face to battery bracket；

Wherein, at least one has been defined between an at least plate washer and shell lead flame channel.

In an embodiment, battery modules are further included:

An at least heat resistant pad.The one side of heat resistant pad covers each electrode slice；An another side direction at least plate washer for heat resistant pad.

Wherein, it is formed with gap between heat resistant pad and an at least plate washer, which is a part for leading flame channel.

In an embodiment, at least a plate washer includes:

One first side plate, the first side plate is arranged towards battery bracket, and is formed with gap between the first side plate and shell.And

One second side plate, the second side plate is arranged towards battery bracket, and is formed with gap between the second side plate and shell.

In an embodiment, which further includes a connecting plate, and opposite two side of connecting plate connects respectively It is connected to the first side plate and the second side plate and forms an inner casing, and the first side plate and the second side plate are both secured to battery bracket.

In an embodiment, the first side plate and the second side plate of inner casing are to extending out, and the two of the first side plate and the second side plate The distance between connecting pin is less than the distance between the first side plate and two free ends of the second side plate.

Preferably, a space is defined between the top side and connecting plate of battery bracket.

In an embodiment, at least one first holding section is respectively formed on the first side plate and the second side plate.Battery bracket Two opposite sides on be respectively formed at least one second holding section.Moreover, the position of at least one first holding section corresponds at least At least one second holding section, the first side plate and second are fixed on by least one first holding section in the position of one second holding section Side plate is fixed on battery bracket.

In an embodiment, shell includes a first shell and second shell, and the side wall of second shell extends into first shell In the side wall of body, and gap is formed between the side wall of second shell and the side wall of first shell.

In an embodiment, the shell includes a first shell and a second shell, the first shell and described the Two shells define a storage space, and an at least plate washer further includes: a third side plate and one the 4th side plate, third side plate and one Four side plates are located at the two opposite sides of battery bracket.

Third side plate is set to the inner bottom surface of second shell, and third side plate is between the first side plate and battery bracket.

4th side plate is set to the inner bottom surface of second shell, and the 4th side plate is between the second side plate and battery bracket.

In an embodiment, the shell includes a first shell and a second shell, the first shell and described the Two shells define a storage space, and an at least plate washer further includes multiple protrusion washers, and

Multiple protrusion washers are respectively arranged on first shell, second shell, the first side plate and the second side plate, and each convex Washer is led flame channel at least one respectively and is protruded out.

It, can be from by the first side according to the flame in an embodiment of the present invention, gone out from abnormal battery channelling What plate and shell were constituted leads the channelling of flame channel, and flame is enable to cool down in leading flame channel, reduces flame to externalities, To improve safety.

Detailed description of the invention

Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model It encloses.Wherein:

Fig. 1 shows the schematic diagram of the battery modules of the prior art.

Fig. 2 shows the schematic diagram of the battery modules of an embodiment of the present invention.

Fig. 3 shows the exploded view of the battery modules of an embodiment of the present invention.

Fig. 4 shows the perspective view of the battery modules of embodiment in Fig. 3.

Fig. 5 A shows the schematic diagram of the battery modules of one embodiment of the utility model.

Fig. 5 B shows the schematic diagram of the battery modules of one embodiment of the utility model.

Drawing reference numeral explanation:

100: battery modules

110: shell

111: first shell

112: second shell

121: battery bracket

131: battery

200,200a, 200b, 200c: battery modules

210: shell

211: first shell

212: second shell

221: battery bracket

222: crook

224: conductive sheet

226: circuit board

231: battery

240,240b, 240c: inner casing

242: fluting

246,246b, 246c: the first side plate

247,247b, 247c: the second side plate

248: connecting plate

249: protrusion washer

250: leading flame channel

251: heat resistant pad

252: weakening structure

256c: third side plate

257c: the four side plate

Specific embodiment

In order to have clearer understanding to the technical solution of the utility model, purpose and effect, now in conjunction with Detailed description of the invention sheet The specific embodiment of utility model.

Fig. 2 shows the schematic diagram of the battery modules of an embodiment of the present invention.As shown in Fig. 2, according to the utility model One embodiment, battery modules 200 include a shell 210, a battery bracket 221, multiple batteries 231 and an at least plate washer.In In the present embodiment, which includes a connecting plate 248, one first side plate 246 and one second side plate 247.Preferably, even Two sides of fishplate bar 248 are connected to the first side plate 246 and the second side plate 247 and form an inner casing 240, more preferably interior Shell 240 is to be integrally formed and be made using punching press processing procedure.Shell 210 includes a first shell 211 and a second shell 212. Battery bracket 221 is to each battery 231 of fixation, and more specifically, in an embodiment, battery bracket 221 can be defined more There are multiple accommodating spaces to accommodate each battery 231.In assembling, by the battery bracket 221 with multiple batteries 231, After being placed in second shell 212, inner casing 240 is set in second shell 212 to cover battery bracket 221 and each battery 231.Finally, again combining second shell 212 with first shell 211, so that first shell 211 and second shell 212 define One storage space, to store inner casing 240, battery bracket 221 and each battery 231.First side plate 246 and the second side plate 247 Battery bracket 221 is faced respectively, and is separated with a gap between battery bracket 221 respectively.The side wall of second shell 212 is located at first The inside sidewalls of shell 211, so that being formed with a gap between first shell 211 and second shell 212.It is interior in an embodiment Shell 240, first shell 211 and second shell 212 appoint and are each formed with a gap between the two, and define one and lead flame channel 250。

According to the present embodiment, when internal short-circuit, which occurs, for a battery 231 generates explosive flame F eruption, battery modules Flame channel 250 is led in 200, makes flames F exiting in leading 250 inner dissipation of flame channel, avoids altering and burns adjacent cells core 231, and is caused Adjacent cells core 231 generates subsequent explosion；And explosive flame F is avoided directly to erupt to outside battery modules 200, and light outer Portion's equipment or substance, cause neighbouring external equipment or substance generates second-time burning or explosion.In this present embodiment, due to being provided with Inner casing 240 can increase the length for leading flame channel 250, and effectively allow flames F exiting in 200 inner dissipation of battery modules.

Fig. 3 shows the exploded view of the battery modules of an embodiment of the present invention.Fig. 4 shows the battery of embodiment in Fig. 3 The perspective view of mould group.Embodiment in Fig. 3 is similar to the embodiment in Fig. 2, and therefore, identical element uses identical symbol simultaneously Omit its related description.As shown in figs. 3 and 4, battery modules 200a includes multiple cylindrical battery cores 231, an inner casing 240, one Battery bracket 221 and multiple conductive sheets 224.Battery bracket 221 defines multiple battery containing spaces to place and fix battery Core 231, multiple batteries 231 are stacked in the length direction x of battery bracket 221 and wide direction z respectively.Multiple conductive sheets 224 are distinguished Set on the both ends of battery 231, to make multiple batteries 231 form multiple battery arrays in parallel or series.Preferably, Each conductive sheet 224 is welded in every battery 231 with welding manner, and the function of series connection and parallel connection is reached.Battery modules There are also include a circuit board 226 by 200a.Circuit board 226 can be a BMS control panel.Battery bracket 221 more defines a circuit Plate accommodating space, to accommodate circuit board 226.Positioned at each conductive sheet of the final positive or negative pole at the both ends battery modules 200a 224 are fixed and are electrically connected to circuit board 226, and for example each conductive sheet 224 is attached to circuit board using multiple screws 226, circuit board 226 is also by screw locking in battery 231.Circuit board 226 is equipped with multiple electric connectors.

In this present embodiment, battery modules 200a further includes a heat resistant pad 251, set on the outside of each conductive sheet 224.It is heat-resisting Pad 251 can be an insulating film, and multiple weakening structures 252 are formed in heat resistant pad 251, the position of each weakening structure 252 The position of a corresponding battery 231.When the explosion of battery 231 and flames F exiting eruption, weakening structure can be broken through more easily 252.Weakening structure 252 can be a score or the groove equal strength structure weak compared with other parts.

In this present embodiment, multiple flutings 242 are formed on the first side plate 246 and one second side plate 247 of inner casing 240 As the first holding section.Battery bracket 221 is formed with multiple crooks 222 and is used as the second holding section.212 inner bottom surface of second shell On be formed with multiple position limiting structures to fixed battery bracket 221.In assembling, by the battery with multiple batteries 231 Bracket 221, be placed in second shell 212 and using each position limiting structure it is fixed after, then make inner casing 240 cover battery bracket 221 and Each battery 231, crook 222 is mutually clamped with fluting 242 at this time, so as to fixed inner casing 240.It is designed in this way, can simplify The step of fixed inner casing 240, and in the inner surface of the lowermost end of the side of inner casing 240 and second shell 212, there are small Gap, to a part for leading flame channel 250 as flames F exiting, so as to allowing flames F exiting to scurry out from the small gap.

In an embodiment, the section of inner casing 240 is formed to the U-shaped extended out, this U font energy when installing inner casing 240 Enough make installation process more smooth.More specifically, two sides of connecting plate 248 are connected to the first side plate 246 and second side Plate 247, and the first side plate 246 and the second side plate 247 be to extending out, i.e., so that the first side plate 246 and the second side plate 247 The distance between two connecting pins w is less than the distance between two free ends of the first side plate 246 and the second side plate 247 W.At this point, such as Shown in Fig. 2, the first side plate 246 and the second side plate 247 of inner casing 240 are at a distance from its inner surface of top end part is between battery 231 H, the first side plate 246 and the second side plate 247 that can be less than inner casing 240 are at a distance from its inner surface of bottom end is between battery 231 H.In addition, because distance h is relatively narrow, therefore flames F exiting is less susceptible to flee from top in an embodiment.Therefore, as shown in figure 4, in figure Top side (or circuit board 226 thereon) and connecting plate 248 (inner top surface of inner casing 240) in 4 embodiments, in battery bracket 221 Between, it is provided with an interval, and a space A is defined in the upper half of inner casing 240, fled with for flames F exiting.

In an embodiment, shell 210 (for example, first shell 211, second shell 212) and the formation of inner casing 240 are longer Lead flame channel 250.In an embodiment, can further including multiple battery cases, one or more length are longer to be led to be formed Flame channel 250 can be fled after cooling down flames F exiting relatively just to escape into outside for flames F exiting, without will form at excessive scorification. In an embodiment, first shell 211, second shell 212 and inner casing 240 are respectively a sheet metal formed body.In an embodiment, Inner casing 240 is respectively a sheet metal formed body.In an embodiment, multiple plate washers (or shell) can be installed on battery bracket It burn-ons in 221 and in the both ends of battery 231 as the conductive sheet 224 of nickel sheet.Plastic cement is assembled then at the outside of battery bracket 221 Shell.

As above-mentioned, when internal short-circuit, which occurs, for battery 231 generates explosive flame F eruption, battery modules 200 and battery mould Have in group 200a and separates leading for generation with inner casing 240 by upper shell, lower casing (that is, first shell 211 and second shell 212) Flame channel 250 makes flames F exiting in battery modules 200 and battery modules 200a inner dissipation, avoids altering and burns adjacent cells core 231, and Cause adjacent cells core 231 and generates subsequent explosion.Flames F exiting is in leading 250 channelling Shi Yinyou conductive sheet 224 of flame channel or heat resistant pad 251 (insulating films) barrier, avoidable flames F exiting directly heat battery 231, cause temperature to rise too high and generate subsequent explosion.And High temperature can be by inner casing 240, upper shell and lower casing (that is, first shell 211 and second shell when leading 250 channelling of flame channel for flames F exiting Body 212) it conducts and disturbs dissipation in surrounding air, flames F exiting dissipates because temperature reduces, and makes battery modules 200 and battery mould Only see that cigarette emerges and scurries out without flames F exiting outside group 200a.

Applicant with probe insertion battery modules 200a test, and respectively to probe be inserted into battery modules 200a before, The state that probe is inserted into battery modules 200a and after probe insertion battery modules 200a obtains photo.According to those photos Experimental result show that flames F exiting burns adjacent cells core 231 in battery modules 200a inner dissipation, without altering, and exceedingly causes neighbour Nearly battery 231 generates subsequent explosion.Flames F exiting is obstructed in leading 250 channelling Shi Yinyou conductive sheet 224 of flame channel or heat resistant pad 251, It avoids flames F exiting from directly heating battery 231, causes temperature to rise too high and generate subsequent explosion.And flames F exiting is in leading flame channel 250 High temperature is conducted by inner casing 240, upper shell and lower casing and disturbs dissipation in surrounding air when channelling, therefore battery modules 200a Outside only sees that cigarette emerges and scurries out without flames F exiting, and first shell 211, second shell 212 and the inner casing 240 of battery 231 are also only There is sootiness trace and without obvious scorification phenomenon.

More than, although illustratively illustrating a little embodiment, these embodiments are not intended to limit the utility model, As long as being formed with the dissipation channel of flames F exiting.More specifically, the formation of the dissipation channel of flames F exiting can be by inner casing 240 And shell 210 (it may include shell and lower casing, as first shell 211 and second shell 212) is constituted, it can also be with Flames F exiting dissipation channel is formed by the side wall that inner casing 240 and shell 210 are constituted, makes flames F exiting in flowing back in channel, passes through inner casing 240 And the heat absorption of shell 210, or mix with air up to cooling effect, and then flames F exiting is made to dissipate.It will be clarified in more detail below, Other embodiments.

Fig. 5 A shows the schematic diagram of the battery modules of an embodiment of the present invention.Embodiment in Fig. 5 A is similar to Fig. 2 Embodiment extremely, therefore, identical element is using identical symbol and omits its related description.As shown in Figure 5A, battery modules An at least plate washer of 200a includes a connecting plate 248, one first side plate 246b, one second side plate 247b and multiple protrusion washers 249.Preferably, connecting plate 248, the first side plate 246b and the second side plate 247b form an inner casing 240b.First shell 211 and At least one is defined between two shells 212 and the first side plate 246b and the second side plate 247b leads flame channel 250, and first shell 211, second shell 212, the first side plate 246b, the second side plate 247b are formed with multiple protrusion washers 249, each to protrude washer 249 250 side of guide flame channel protrusion respectively, to increase the length for leading flame channel 250.First shell 211 and second shell 212 It is formed with gap between the free end of side wall, to as the outlet for leading flame channel 250.

Fig. 5 B shows the schematic diagram of the battery modules of an embodiment of the present invention.Embodiment in Fig. 5 B is similar to Fig. 2 In embodiment, therefore, identical element is using identical symbol and omits its related description.As shown in Figure 5 B, battery modules An at least plate washer of 200c includes a connecting plate 248, one first side plate 246c and one second side plate 247c, a third side plate 256c and one the 4th side plate 257c.Preferably, connecting plate 248, the first side plate 246c and the second side plate 247c form an inner casing 240c.First shell 211 and second shell 212；With the first side plate 246c, one second side plate 247c, a third side plate 256c and At least one, which is defined, between one the 4th side plate 257c at least one leads flame channel 250.

Third side plate 256c is set to the inner bottom surface of second shell 212, and is located at the first side plate 246c and battery bracket Between 221, third side plate 256c can elongate third side plate 256c, the first side plate 246c and first shell 211 or second shell 212 length for leading flame channel 250 defined.4th side plate 257c is set to the inner bottom surface of second shell 212, and is located at second Between side plate 247c and battery bracket 221, the 4th side plate 257c can elongate the 4th side plate 257c, the second side plate 247c and first The length for leading flame channel 250 that shell 211 or second shell 212 are defined.Preferably, the interior bottom of second shell 212 Face is formed with multiple restriction slots, and third side plate 256c and the 4th side plate 257c, which are inserted into, to be limited in slot, and is fixed on second shell The inner bottom surface of body 212.

According to the embodiment in Fig. 5 A and Fig. 5 B, due to being provided with the first side plate 246b, one second side plate 247b, third side Plate 256c and the 4th side plate 257c at least one, and the length for leading flame channel 250 can be increased, can effectively allow flame F is leading 250 channelling of flame channel, is dissipated by the first side plate 246b, the second side plate 247b, third side plate 256c and the 4th side plate 257c Heat；Or mix and cool down with the air led in flame channel 250, and flames F exiting can be made to make battery in 200 inner dissipation of battery modules Only see that cigarette emerges and scurries out without flames F exiting outside mould group 200b and battery modules 200c.

In addition, flames F exiting just from abnormal 231 channelling of battery and out when, neighbouring heat resistant pad 251 can be burnt into porous knot Structure, and flames F exiting can be obstructed by the heat resistant pad of firing porous structure 251, avoidable flames F exiting directly heats adjacent battery 231, it causes the temperature of adjacent battery 231 to rise too high and generates subsequent explosion.The formation of the dissipation channel of flames F exiting can be by interior Shell, upper shell, lower casing are constituted, and can also be formed flame dissipation channel by the side wall that inner casing, upper shell or lower casing generate, be made fire Flame in channel in flowing back, and by the heat absorption of inner casing, upper shell, lower casing, or mixes with air up to cooling effect, and then makes fire Flame F dissipates.

The above descriptions are merely exemplary embodiments of the present utility model, the model being not intended to limit the utility model It encloses.Any those skilled in the art, it is made etc. under the premise of not departing from the conceptions and principles of the utility model With variation and modification, the range of the utility model protection should belong to.

Claims (10)

1. a kind of battery modules, which is characterized in that the battery modules include:

Multiple batteries；

One battery bracket, the battery bracket are capable of fixing each battery；

Multiple electrodes piece, multiple electrode slices are respectively arranged at the both ends of multiple batteries, multiple electrode slice energy It is electrically connected multiple batteries in parallel or in series；

One shell, the shell can accommodate the battery bracket, each electrode slice and each battery；And

An at least plate washer, the plate washer are arranged to face to the battery bracket,

Wherein, at least one has been defined between at least one plate washer and the shell lead flame channel.

2. battery modules according to claim 1, which is characterized in that the battery modules further include:

An at least heat resistant pad, the one side of the heat resistant pad cover each electrode slice, and the another side of the heat resistant pad is towards at least One plate washer,

Wherein, gap is formed between at least one heat resistant pad and at least one plate washer, flame channel is led to be described in the gap A part.

3. battery modules according to claim 1, which is characterized in that at least one plate washer includes:

One first side plate, first side plate are arranged towards the battery bracket, and between first side plate and the shell It is formed with gap；And

One second side plate, second side plate are arranged towards the battery bracket, and shape between second side plate and the shell At there is gap.

4. battery modules according to claim 3, which is characterized in that

At least one plate washer further includes a connecting plate,

Opposite two side of the connecting plate is connected to first side plate and second side plate and is formed in one Shell, and

First side plate and second side plate are both secured to the battery bracket.

5. battery modules according to claim 4, which is characterized in that

First side plate and second side plate of the inner casing to extending out, first side plate and second side plate The distance between two connecting pins are less than the distance between first side plate and two free ends of second side plate.

6. battery modules according to claim 5, which is characterized in that the top side of the battery bracket and the connecting plate it Between define a space.

7. according to the described in any item battery modules of claim 3 to 6, which is characterized in that

At least one first holding section is respectively formed on first side plate and second side plate,

At least one second holding section is respectively formed on the two opposite sides of the battery bracket,

And at least 1 first holding section position correspond at least 1 second holding section position, pass through at least one institute It states the first holding section and is fixed at least 1 second holding section, first side plate and second side plate are fixed on the electricity Pond bracket.

8. according to the described in any item battery modules of claim 3 to 6, which is characterized in that

The shell includes a first shell and second shell, and the side wall of the second shell extends into the side of the first shell In wall, and gap is formed between the side wall of the second shell and the side wall of the first shell.

9. according to the described in any item battery modules of claim 3 to 6, which is characterized in that

The shell includes a first shell and a second shell, and the first shell and the second shell define a storage Space,

At least one plate washer further includes: a third side plate and one the 4th side plate, the third side plate and the 4th side plate point Not Wei Yu the battery bracket two opposite sides,

The third side plate is set to the inner bottom surface of the second shell, and the third side plate is located at first side plate and described Between battery bracket,

4th side plate is set to the inner bottom surface of the second shell, and the 4th side plate is located at second side plate and described Between battery bracket.

10. according to the described in any item battery modules of claim 3 to 6, which is characterized in that

The shell includes a first shell and a second shell, and the first shell and the second shell define a storage Space,

At least one plate washer further includes multiple protrusion washers, and

Multiple protrusion washers are respectively arranged at the first shell, the second shell, first side plate and described On two side plates, and each protrusion washer respectively at least led described in one flame channel protrude.