CN209730091U - Battery modules and battery pack - Google Patents
Battery modules and battery pack Download PDFInfo
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- CN209730091U CN209730091U CN201920614709.9U CN201920614709U CN209730091U CN 209730091 U CN209730091 U CN 209730091U CN 201920614709 U CN201920614709 U CN 201920614709U CN 209730091 U CN209730091 U CN 209730091U
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- monitoring
- conducting wire
- substrate
- battery modules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to a kind of battery modules and battery packs.Battery modules include: secondary cell, and multiple secondary cells are arranged side by side, and secondary cell has explosion-proof valve；Monitoring assembly, monitoring assembly are set to the top of secondary cell, and monitoring assembly includes substrate and monitoring conducting wire, and monitoring conducting wire is connect with substrate；Monitoring conducting wire is correspondingly arranged with each explosion-proof valve position；When quick-fried spray occurs for any one explosion-proof valve, monitoring conducting wire can be disconnected, to realize the monitoring to battery modules state.The battery modules of the utility model embodiment can real-time monitoring secondary cell timely feedback quick-fried spray signal when thermal runaway occurs for secondary cell, improve the safety of battery modules use process.
Description
Technical field
The utility model relates to battery technology fields, more particularly to a kind of battery modules and battery pack.
Background technique
Currently, demand of the market to battery security is increasingly as energy density in the secondary battery is higher and higher
It is high.Thermal runaway can occur in secondary cell use process, so as to cause hot environment is partially formed, there is larger destructive power,
It may burn battery box cover when serious and cause fire, however heat mistake occurs since secondary cell can not be timely detected
Control, therefore will cause great safety accident.
Utility model content
The utility model embodiment provides a kind of battery modules and battery pack, can real-time monitoring secondary cell, two
When thermal runaway occurs for primary cell, quick-fried spray signal is timely feedbacked, improves the safety of battery modules use process.
On the one hand, the utility model embodiment proposes a kind of battery modules comprising:
Secondary cell, multiple secondary cells are arranged side by side, and secondary cell has explosion-proof valve；
Monitoring assembly, monitoring assembly are set to the top of secondary cell, and monitoring assembly includes substrate and monitoring conducting wire, prison
Conducting wire is surveyed to connect with substrate；Monitoring conducting wire is correspondingly arranged with each explosion-proof valve position；When quick-fried spray occurs for any one explosion-proof valve, prison
Surveying conducting wire can disconnect, to realize the monitoring to battery modules state.
According to the one aspect of the utility model embodiment, monitoring conducting wire has the width direction along substrate spaced
First segment and second segment, the minimum spacing between first segment and second segment are H, and the outer diameter for monitoring conducting wire is D, wherein H/D >=
2.5。
According to the one aspect of the utility model embodiment, monitors conducting wire and be in U-shape structure.
According to the one aspect of the utility model embodiment, explosion-proof valve has the center that the length direction along substrate extends
Line, first segment and second segment are respectively arranged at the two sides of center line.
According to the one aspect of the utility model embodiment, the outer diameter D of conducting wire is monitored, wherein 0.1mm≤D≤2mm, the
One section of minimum spacing H between second segment, wherein 5mm≤H≤50mm.
According to the one aspect of the utility model embodiment, substrate is equipped with receiving portion, and monitoring conducting wire is set to receiving portion,
The shape of the shape and receiving portion that monitor conducting wire matches.
According to the one aspect of the utility model embodiment, receiving portion is the groove being recessed along the thickness direction of substrate, recessed
The bottom wall of slot is not through substrate.
According to the one aspect of the utility model embodiment, receiving portion runs through substrate along the thickness direction of substrate, and monitoring is led
The full-size of line through-thickness is less than the thickness of substrate, and monitors conducting wire and be set in receiving portion.
According to the one aspect of the utility model embodiment, monitoring assembly further includes the insulating layer of package monitoring conducting wire, absolutely
Edge layer is filled in receiving portion, and monitoring conducting wire is connect by insulating layer with substrate.
According to the one aspect of the utility model embodiment, insulating layer with a thickness of M, the maximum outside diameter for monitoring conducting wire is D,
Wherein, 0.05≤M/D≤10.
According to the one aspect of the utility model embodiment, insulating layer is set to the part below monitoring conducting wire along thickness side
To with a thickness of M.
According to the one aspect of the utility model embodiment, the thickness M of insulating layer, wherein 0.1mm≤M≤1mm.
According to the one aspect of the utility model embodiment, monitoring assembly further includes protective plate, along the thickness direction of substrate,
Protective plate is set to side of the substrate close to secondary cell.
According to the one aspect of the utility model embodiment, monitoring assembly further includes isolation board, along the thickness direction of substrate,
Isolation board is set to side of the substrate far from secondary cell.
It can be realized by setting monitoring assembly to secondary cell according to the battery modules of the utility model embodiment
State carries out real-time monitoring.Monitoring assembly includes substrate and monitoring conducting wire.It monitors conducting wire itself and constitutes complete loops.In secondary electricity
When quick-fried spray ejection high temperature substance occurs for pond, monitoring conducting wire included by monitoring assembly is blown or thrusts and disconnects, and monitors at this time
It can not continue to transmit electric signal inside conducting wire, so that the signal that quick-fried spray occurs for secondary cell is timely feedbacked, in order to battery mould
Group takes safe intervening measure to contain the high temperature substance sprawling of the quick-fried spray of secondary cell in time in time, improves battery modules use process
Safety.
On the other hand, a kind of battery pack is provided according to the utility model embodiment comprising such as the electricity of above-described embodiment
Chi Mo group.
According to the other side of the utility model embodiment, the quantity of battery modules is two or more, more than two electricity
Respectively included monitoring conducting wire is connected in series Chi Mo group.
Another aspect provides a kind of battery pack according to the utility model embodiment comprising:
Battery unit；Lid is set to above battery unit；Monitoring assembly, monitoring assembly are set to lid, monitoring assembly
Including substrate and monitoring conducting wire, monitoring conducting wire is connect with substrate；When quick-fried spray occurs for battery unit, monitoring conducting wire can be disconnected,
To realize the monitoring to battery-unit condition.
Detailed description of the invention
The feature, advantage and technical effect of the utility model exemplary embodiment are described below by reference to attached drawing.
Fig. 1 is the decomposition texture schematic diagram of the battery modules of an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the monitoring assembly of an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the monitoring assembly of another embodiment of the utility model；
Fig. 4 is the structural schematic diagram of the monitoring assembly of the utility model another embodiment；
Fig. 5 is the schematic cross-sectional view of the battery modules of an embodiment of the present invention；
Fig. 6 is enlarged drawing at A in Fig. 5；
Fig. 7 is the broken section structural schematic diagram of the battery modules of an embodiment of the present invention；
Fig. 8 is the schematic cross-sectional view of the battery modules of another embodiment of the utility model；
Fig. 9 is enlarged drawing at B in Fig. 8；
Figure 10 is the decomposition texture schematic diagram of the battery pack of an embodiment of the present invention；
Figure 11 is the decomposition texture schematic diagram of the battery pack of another embodiment of the utility model；
Figure 12 is the lid of an embodiment of the present invention and the connection status diagram of monitoring assembly.
In the accompanying drawings, the attached drawing is not drawn according to the actual ratio.
Description of symbols:
1, battery modules；
11, secondary cell；11a, center line；111, explosion-proof valve；
12, monitoring assembly；121, substrate；121a, receiving portion；122, conducting wire is monitored；122a, first segment；122b, second
Section；122c, middle transition section；123, insulating layer；
13, protective plate；
14, isolation board；
2, battery pack；
21, cabinet；
22, lid；
3, battery pack；
31, battery unit；
X, width direction；Y, thickness direction；Z, length direction.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
The detailed description and the accompanying drawings for illustratively illustrating the principles of the present invention, but cannot be used to limit the model of the utility model
It encloses, i.e., the utility model is not limited to described embodiment.
In the description of the present invention, it should be noted that unless otherwise indicated, the meaning of " plurality " is two with
On；The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" is merely for convenience of description originally
Utility model and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", "
Three " etc. are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The noun of locality of middle appearance described below is direction shown in figure, be not to the utility model specific structure into
Row limits.In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art,
Visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model in order to better understand carries out the utility model embodiment below with reference to Fig. 1 to Figure 12 detailed
Description.
On the one hand, shown in Figure 1, the utility model embodiment provides a kind of battery modules 1 comprising multiple secondary electricity
Pond 11 and monitoring assembly 12.Multiple secondary cells 11 are arranged side by side to form battery pack.Each secondary cell 11 has explosion-proof valve
111.When 11 internal pressure of secondary cell is more than predetermined pressure, quick-fried spray can occur for explosion-proof valve 111 with pressure release, while can be with high temperature
Substance sprays, such as high-temperature gas or high-temperature electrolyte.In one example, secondary cell 11 is rectangular cell.Explosion-proof valve 111
Shape be round or track type.
The monitoring assembly 12 of the present embodiment is set to the top of secondary cell 11.Referring to fig. 2 to shown in Fig. 4, monitoring assembly
12 include substrate 121 and monitoring conducting wire 122.Monitoring conducting wire 122 is connect with substrate 121, so that substrate 121 is monitoring conducting wire
A possibility that 122 provide supporting force, and the position of reduction monitoring conducting wire 122 moves down and is electrically connected with secondary cell 11.
Monitoring conducting wire 122 is correspondingly arranged with each 111 position of explosion-proof valve.Under normal condition, monitoring conducting wire 122 itself is integrally formed one
Complete electrical circuit.When quick-fried spray occurs for any one explosion-proof valve 111, the high temperature or impact force that quick-fried spray generates can act on monitoring
Conducting wire 122, so that monitoring conducting wire 122 occurs fusing or is cut off by shearing force, so that the disconnection of conducting wire 122 is monitored, with this
Realize the monitoring to 1 state of battery modules.
The battery modules 1 of the utility model embodiment realize the work to secondary cell 11 by setting monitoring assembly 12
State carries out real-time monitoring.When quick-fried spray situation occurs for secondary cell 11, the monitoring conducting wire 122 in monitoring assembly 12 is by high temperature
Effect or greater impact masterpiece used time can disconnect, so that the signal that quick-fried spray occurs for secondary cell 11 is timely feedbacked, in order to
Safe intervening measure is taken to battery modules 1 in time, contains the high temperature substance sprawling of the quick-fried spray of secondary cell 11 in time, while also can
It is enough that personnel are played a warning role, improve the safety of 1 use process of battery modules.
In one embodiment, battery modules 1 further include battery management system (BMS, Battery management
system).Monitoring the tool of conducting wire 122, there are two connect end.Two connection end parts not with the positive terminal of battery management system
It is connected with negative terminal.Under normal condition, monitoring can be powered on conducting wire 122, to there is electric current to pass through.When monitoring conducting wire 122
It disconnects, when itself is in off state, the electric current for flowing through monitoring conducting wire 122 is cut off.Battery management system monitors
After current changing signal, judge that quick-fried spray occurs for secondary cell 11, and alarm signal is intervened or sent out in timely automated implementation.
In one embodiment, the quantity of secondary cell 11 can be 2 to 50.Three or more secondary cells 11 are logical
It crosses electrical connection and carries out series connection or series-parallel combination.
In one embodiment, substrate 121 can be micarex, itself brittleness is good, be easy to when by greater impact power
It is broken.Substrate 121 is also possible to plastic plate, is easy to melt when by high temperature, and easily broken when by greater impact power.
In this way, substrate 121 is small to the barrier effect of high temperature substance when quick-fried spray occurs for secondary cell 11, guarantee high temperature substance more
Monitoring conducting wire 122 is acted on so that monitoring conducting wire 122 rapidly disconnects.Substrate 121 has predetermined length, preset width and makes a reservation for
Thickness.In various embodiments, the width direction X of substrate 121 is direction corresponding to width, and the thickness direction Y of substrate 121 is
Direction corresponding to thickness, the length direction Z of substrate 121 are directions corresponding to length.Optionally, substrate 121 with a thickness of
0.5mm~2mm.
In one embodiment, shown in Figure 4, monitoring conducting wire 122 has the spaced first segment of X in the width direction
122a and second segment 122b.Monitoring conducting wire 122 further includes the middle transition section 122c for connecting first segment 122a and second segment 122b.
First segment 122a and second segment 122b is correspondingly arranged with each 111 position of explosion-proof valve.When 11 quick-fried spray of secondary cell, high temperature substance can
To be sprayed from explosion-proof valve 111 and act on first segment 122a and/or second segment 122b, so that first segment 122a and/or second segment
122b is disconnected.First segment 122a and second segment 122b can be mutually redundant, thus when first segment 122a is not disconnected, second segment
122b occurs to disconnect to realize monitoring function, alternatively, first segment 122a occurs to disconnect to realize prison when second segment 122b is not disconnected
Brake.In one example, the minimum spacing between first segment 122a and second segment 122b is H (shown in Figure 4), and is supervised
The outer diameter for surveying conducting wire 122 is D (shown in Figure 6), wherein H/D >=2.5.Minimum spacing refers to X straight line survey in the width direction
Measure the minimum value in all distance values between first segment 122a and second segment 122b.When H/D is less than 2.5, first segment
Minimum spacing between 122a and second segment 122b is too small.In this way, in first segment 122a and/or second segment 122b since high temperature is sent out
A possibility that first segment 122a and/or second segment 122b in the case where melting, after fusing are flowed to each other there are melt substance is given birth to,
So as to cause after fusing first segment 122a and/or second segment 122b restore to be electrically connected again, and then cause monitor conducting wire 122 supervise
Brake failure, can not Normal Feedback secondary cell 11 signal of quick-fried spray has occurred.In addition, first segment 122a and second segment 122b
Between the too small creepage distance that will lead between first segment 122a and second segment 122b of minimum spacing it is too short, thus first segment
122a is easy to puncture with second segment 122b to be connected to, and influences normally to monitor.
In one example, the material for monitoring conducting wire 122 can be aluminium, copper or tin etc..The cross section for monitoring conducting wire 122 can
To be round or polygon.The outer diameter for monitoring conducting wire 122 is D, wherein 0.1mm≤D≤2mm.The outer diameter of monitoring conducting wire 122 refers to
Be the length value of straight line done on the cross section to monitoring conducting wire 122 by monitoring 122 center of conducting wire.Monitor conducting wire 122
Cross section when being round, which refers to the diameter of monitoring conducting wire 122.When the cross section for monitoring conducting wire 122 is polygon,
The outer diameter refers to maximum outside diameter, namely the length value of the longest straight line by cross-section center.Monitor the outer diameter of conducting wire 122
When less than 0.1mm, itself anti-impact force performance is low, is easy to be thrust by external impact force during the installation process, so as to cause monitoring
Conducting wire 122 fails, and cannot achieve the function of monitoring secondary cell 11.When monitoring the outer diameter of conducting wire 122 greater than 2mm, conducting wire is monitored
122 itself resistant to high temperatures and anti-impact force performance are excessively high, thus be difficult to be fused or thrust by external impact force by high temperature substance, thus
Monitoring sensitivity is reduced, causes monitoring conducting wire 122 that can not realize the function of monitoring secondary cell 11 by tripping system.It supervises simultaneously
The outer diameter for surveying conducting wire 122, which is greater than 2mm, can occupy more installation spaces, to reduce the energy density of battery modules 1.First segment
Minimum spacing H between 122a and second segment 122b, wherein 5mm≤H≤50mm.When minimum spacing H is less than 5mm, first segment
Minimum spacing between 122a and second segment 122b is too small.In this way, in first segment 122a and/or second segment 122b since high temperature is sent out
A possibility that first segment 122a and/or second segment 122b in the case where melting, after fusing are flowed to each other there are melt substance is given birth to,
So as to cause after fusing first segment 122a and/or second segment 122b restore to be electrically connected again, and then lead to monitors failure.Separately
Outside, minimum spacing between first segment 122a and second segment 122b is too small to be will lead between first segment 122a and second segment 122b
Creepage distance is too short, so that first segment 122a is easy to puncture each other to be connected to second segment 122b, influences monitoring conducting wire 122 and normally holds
Row monitoring function.When minimum spacing H is greater than 50mm, the spacing between first segment 122a and second segment 122b is excessive, thus the
Center of the one section of 122a and second segment 122b apart from explosion-proof valve 111 farther out, can connect work in the presence of the high temperature substrate for weakening quick-fried ejection is upright
On first segment 122a and second segment 122b a possibility that impact force, can also exist high temperature substance because transmitting distance farther out due to by
It cools, so that temperature when acting on first segment 122a and second segment 122b is relatively low.In this way, first segment 122a and second segment
122b, which exists, is difficult to a possibility that being fused or thrust by external impact force by high temperature substance, fails so as to cause monitoring conducting wire 122,
The function of monitoring secondary cell 11 can not be realized by disconnection mode.
In one embodiment, shown in Figure 1, explosion-proof valve 111 has along the length direction Z extension of substrate 121
Heart line 11a.First segment 122a and second segment 122b is respectively arranged at the two sides of center line 11a.Optionally, conducting wire 122 is monitored
Z extends first segment 122a and second segment 122b along its length.In one example, monitoring conducting wire 122 is in U-shape structure.Along wide
It spends direction X and carries out linear measurement, the spacing measured at various locations between first segment 122a and second segment 122b is equal.One
In a example, first segment 122a is identical with second segment 122b structure, and the two is arranged in parallel.In another example, first segment
122a and second segment 122b is respectively directed away from the inclination of mutual direction, so that Z is gradually along its length for spacing between the two
It is decreased or increased.
In one embodiment, the quantity of the monitoring conducting wire 122 of the present embodiment can be two or more.More than two prisons
It surveys conducting wire 122 to be arranged side by side along a direction, and is all oppositely arranged with 111 position of explosion-proof valve.More than two monitoring conducting wires
122 are mutually redundant.Any one monitoring conducting wire when quick-fried spray occurs for secondary cell 11, in more than two monitoring conducting wires 122
122 can be monitored the state of secondary cell 11, to be conducive to improve monitoring precision.More than two monitorings are led
When any of line 122 monitoring conducting wire 122 monitors failure occurs or do not work normally, remaining monitoring conducting wire 122 can be normal
Monitoring is completed, to reduce a possibility that failing to judge.
In one embodiment, shown in Figure 2, monitoring conducting wire 122 is directly arranged on the surface of substrate 121.Substrate
121 surfaces being connected with monitoring conducting wire 122 are burnishing surface.The two is connected and fixed by way of buckling or being bonded.Another
Shown in Figure 3 in a embodiment, substrate 121 is equipped with receiving portion 121a.Monitoring conducting wire 122 is set to receiving portion 121a.Prison
The shape for surveying the whole shape of conducting wire 122 and receiving portion 121a matches.When monitoring conducting wire 122 is U-shaped structure, receiving portion
121a is also U-shaped structure.Receiving portion 121a is correspondingly arranged with 111 position of explosion-proof valve.Monitoring conducting wire 122 is incorporated in receiving portion
In 121a, on the one hand, be conducive to improve structural compactness, save space, improve 1 energy density of battery modules, another party
Face monitors constraint of the conducting wire 122 by insulation board, improves self-position stability, reduces monitoring 122 position of conducting wire and occurs partially
Shifting is unable to a possibility that keeping corresponding states with the position of explosion-proof valve 111, and generation can not be acted on partially by reducing high temperature substance
The monitoring conducting wire 122 of shifting and a possibility that lead to monitors failure.
In one embodiment, shown in referring to figs. 5 and 6, receiving portion 121a runs through base along the thickness direction Y of substrate 121
Plate 121.Z extends receiving portion 121a along its length.Monitoring conducting wire 122 directly corresponds to the explosion-proof valve 111 of secondary cell 11.Two
When quick-fried spray occurs for primary cell 11, internal high temperature substance can directly act on monitoring conducting wire 122, and rapidly make to monitor conducting wire
122 occur fusing or are thrust by external impact force, so that monitoring conducting wire 122 is in an off state, to be conducive to shorten monitoring
Time.The full-size for monitoring 122 through-thickness Y of conducting wire is less than the thickness of substrate 121, and monitors conducting wire 122 and be set to
In receiving portion 121a.Through-thickness Y, monitoring conducting wire 122 are not exposed to substrate 121, so that substrate 121 can be to monitoring conducting wire
122 form protection, reduce what monitoring conducting wire 122 in assembling process or later period use process was surprisingly thrust by external impacts
Possibility.In addition, monitoring conducting wire 122 will not occupy more installation spaces on thickness direction Y, it is whole to promote monitoring assembly 12
Structural compactness, to be conducive to improve the energy density of battery modules 1.
In another embodiment, shown in Figure 7, receiving portion 121a is the recessed of the thickness direction Y recess along substrate 121
Slot.The bottom wall of groove is not through substrate 121.121 through-thickness Y of substrate can provide supporting force for monitoring conducting wire 122.In electricity
When vibrating in 1 use process of Chi Mo group, monitoring conducting wire 122 is not easy to deviate from out of groove.The substrate 121 of the present embodiment is in height
Temperature effect is lower itself to be occurred fusing or occur under impact force action broken.In one example, Z is straight along its length for groove
Line extends, to form strip groove.The whole structure also in a strip shape of conducting wire 122 is monitored, to match with groove shapes.
In one embodiment, referring to shown in Fig. 8 and Fig. 9, monitoring assembly 12 further includes the insulation of package monitoring conducting wire 122
Layer 123.Insulating layer 123 is filled in receiving portion 121a.Monitoring conducting wire 122 is connect by insulating layer 123 with substrate 121.Explosion-proof valve
When the 111 quick-fried spray of generation, insulating layer 123 can be melted or be crushed.Insulating layer 123 can guarantee that monitor conducting wire 122 leads to adjacent
Electric structural member is dielectrically separated from, and reduces monitoring conducting wire 122 and adjacent energized structural part is in contact and causes short circuit.Insulating layer 123
The gap between monitoring conducting wire 122 and substrate 121 can be filled, to improve the positional stability of monitoring conducting wire 122.Insulating layer
123 can reduce a possibility that puncture short occurs for first segment 122a and second segment 122b.It is high when quick-fried spray occurs for secondary cell 11
Warm substance can be melted or be crushed first, and to expose internal monitoring conducting wire 122, then high temperature substance will monitor conducting wire again
122 fusing are thrust.
In one embodiment, insulating layer 123 with a thickness of M, and monitor conducting wire 122 maximum outside diameter be D, wherein
0.05≤M/D≤10.When M/D is less than 0.05, the thickness of insulating layer 123 is excessively thin, and insulation performance is deteriorated, and improves and insulation mistake occurs
A possibility that effect.When M/D is greater than 10, the thickness of insulating layer 123 is blocked up, thus when quick-fried spray occurs for explosion-proof valve 111, high temperature substrate
Matter is susceptible to 123 barrier effect of insulating layer, is not easy that rapidly insulating layer 123 is melted or is crushed, and extends monitoring conducting wire 122
Monitoring time.In one example, the thickness value that 123 any position of insulating layer is measured is M.In another example,
Through-thickness Y, insulating layer 123 be set to the part through-thickness Y of monitoring conducting wire 122 lower section with a thickness of M.Along thickness side
To Y, linear measurement is made in the part for being set to 122 lower section of monitoring conducting wire to insulating layer 123, to obtain thickness value M.
In one embodiment, insulating layer 123 with a thickness of M, wherein 0.1mm≤M≤1mm.The material of insulating layer 123
It can be the high molecular materials such as polyethylene, polypropylene or polyester, be also possible to ceramics or mica.The thickness of insulating layer 123 can be with
For 0.1mm~1mm.The insulation performance of insulating layer 123 is greater than 500M Ω.When the thickness of insulating layer 123 is less than 0.1mm, insulating properties
It can reduce, to improve a possibility that short circuit occurs for first segment 122a and second segment 122b breakdown, false alarm situation occur,
Reduce monitoring accuracy.When the thickness of insulating layer 123 is greater than 1mm, insulating layer 123 melts difficulty or broken difficulty increases, thus
When quick-fried spray occurs there are secondary cell 11, insulating layer 123 fails the case where melting or be crushed to expose monitoring conducting wire 122, into
And cause first segment 122a and second segment 122b that open circuit can not occur, so that monitoring cable set can not normally complete monitoring,
It can not judge that the state of quick-fried spray has occurred for secondary cell 11.
In one embodiment, referring to shown in Fig. 6 or Fig. 7, monitoring assembly 12 further includes protective plate 13.Along substrate 121
Thickness direction Y, protective plate 13 are set to substrate 121 close to the side of secondary cell 11.Protective plate 13 is capable of providing Additional Protection.
When quick-fried spray occurs for secondary cell 11, protective plate 13 can stop high temperature substance to spread outward, promote 1 safety of battery modules.It is anti-
Backplate 13 can be connected and fixed with substrate 121, and substrate 121 and 13 through-thickness Y of protective plate stacking.Optionally, it protects
Plate 13 is the high temperature resistance and high strengths insulating materials such as mica, ceramics, composite material composition.Optionally, substrate 121 and protective plate 13 are logical
The high-temperature-resistant adhesives such as silicone adhesive, high-temp epoxy glue, organosilicon, phenolic are crossed to be bonded.
In one embodiment, referring to shown in Fig. 6 or Fig. 7, monitoring assembly 12 further includes isolation board 14.Along substrate 121
Thickness direction Y, isolation board 14 are set to side of the substrate 121 far from secondary cell 11.Isolation board 14 is by secondary cell 11 and supervises
Component 12 is surveyed to keep apart.Isolation board 14 can be connected and fixed with substrate 121, and 13 through-thickness Y of substrate 121 and protective plate
Stacking.When quick-fried spray occurs for secondary cell 11, isolation board 14 is melted first or rushes broken by high temperature substance, then will monitor conducting wire again
122 fusing are thrust.Optionally, isolation board 14 is the insulating materials such as mica or plastics composition.Optionally, substrate 121 be isolated
Plate 14 is bonded by high-temperature-resistant adhesives such as silicone adhesive, high-temp epoxy glue, organosilicon, phenolics.
The battery modules 1 of the utility model embodiment can be realized by setting monitoring assembly 12 to secondary cell 11
State carries out real-time monitoring.Monitoring assembly 12 includes substrate 121 and monitoring conducting wire 122.It monitors conducting wire 122 itself and constitutes complete return
Road.When quick-fried spray ejection high temperature substance occurs for secondary cell 11, monitoring conducting wire 122 included by monitoring assembly 12 is blown or rushes
Break and disconnect, monitoring can not continue to transmit electric signal inside conducting wire 122 at this time, so that timely feedbacking secondary cell 11 occurs quick-fried spray
Signal, in order to take safe intervening measure to contain the high temperature substance of the quick-fried spray of secondary cell 11 in time in time battery modules 1
Sprawling improves the safety of 1 use process of battery modules.
Shown in Figure 10, the utility model embodiment also provides a kind of battery pack 2 comprising the electricity of the various embodiments described above
Chi Mo group 1.In one embodiment, the quantity of battery modules 1 is two or more.More than two battery modules 1 are respectively included
Monitoring conducting wire 122 be connected in series.After all monitoring conducting wire 122 is connected in series, then by total input terminal and total output end with
The positive terminal of battery management system is connected with negative terminal, to carry out real-time monitoring to each battery modules 1.
The battery pack 2 of the utility model embodiment can be realized by monitoring assembly 12 to the states of battery modules 1 into
Row real-time monitoring.When quick-fried spray ejection high temperature substance occurs for secondary cell 11,122 quilt of monitoring conducting wire included by monitoring assembly 12
It fuses or thrusts and disconnect, monitoring can not continue to transmit electric signal inside conducting wire 122 at this time, to timely feedback battery modules 1
The signal of quick-fried spray occurs, in order to take safe intervening measure to contain the high temperature of the quick-fried spray of battery modules 1 in time in time battery pack 2
Substance sprawling, improves the safety of 2 use process of battery pack.
In one embodiment, battery pack 2 further includes cabinet 21 and lid 22.Cabinet 21 has for accommodating battery modules
1 accommodating chamber.Battery modules 1 are packed into the accommodating chamber of cabinet 21, are finally connected and fixed cabinet 21 and lid 22.
In one embodiment, referring to shown in Figure 11 and Figure 12, the utility model embodiment also provides a kind of battery pack 3,
It includes battery unit 31, lid 22 and monitoring assembly 12.Lid 22 is set to the top of battery unit 31.Monitoring assembly 12 is set
It is placed in lid 22.Monitoring assembly 12 includes substrate 121 and monitoring conducting wire 122.Monitoring conducting wire 122 is connect with substrate 121.Battery
When quick-fried spray occurs for unit 31, monitoring conducting wire 122 can be disconnected, to realize the monitoring to 31 state of battery unit.
In one embodiment, battery unit 31 can be the battery mould of single secondary cell 11, the various embodiments described above
Group 1 or battery modules in the prior art.
In one embodiment, the substrate 121 of monitoring assembly 12 and 22 bonding connection of lid.Optionally, substrate 121 and lid
Body 22 is bonded by high-temperature-resistant adhesives such as silicone adhesive, high-temp epoxy glue, organosilicon, phenolics.
In one embodiment, battery pack 3 further includes cabinet 21.Cabinet 21 has the receiving for accommodating battery unit 31
Chamber.Battery unit 31 is packed into the accommodating chamber of cabinet 21, is finally connected and fixed cabinet 21 and lid 22.
The battery pack 3 of the utility model embodiment can realize the shape to battery unit 31 by setting monitoring assembly 12
State carries out real-time monitoring.Monitoring assembly 12 includes substrate 121 and monitoring conducting wire 122.Under normal condition, conducting wire 122 itself is monitored
Constitute complete loops.When quick-fried spray ejection high temperature substance occurs for battery unit 31, monitoring conducting wire 122 included by monitoring assembly 12
It is blown or thrusts and disconnect, monitoring can not continue to transmit electric signal inside conducting wire 122 at this time, to timely feedback battery unit
31 occur the signal of quick-fried spray, in order to take safe intervening measure to contain the quick-fried spray of battery unit 31 in time in time battery pack 3
The sprawling of high temperature substance, improves the safety of 3 use process of battery pack.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case where enclosing, various improvement can be carried out to it and can replace component therein with equivalent, especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but is included all technical solutions falling within the scope of the claims.
Claims (17)
1. a kind of battery modules characterized by comprising
Secondary cell, multiple secondary cells are arranged side by side, and the secondary cell has explosion-proof valve；
Monitoring assembly, the monitoring assembly are set to the top of the secondary cell, and the monitoring assembly includes substrate and prison
Conducting wire is surveyed, the monitoring conducting wire is connect with the substrate；The monitoring conducting wire is correspondingly arranged with each explosion-proof valve position；Appoint
When quick-fried spray occurs for the explosion-proof valve of meaning one, the monitoring conducting wire can be disconnected, to realize the prison to the battery modules state
It surveys.
2. battery modules according to claim 1, which is characterized in that the monitoring conducting wire has the width along the substrate
The spaced first segment in direction and second segment, the minimum spacing between the first segment and the second segment are H, the monitoring
The outer diameter of conducting wire is D, wherein H/D >=2.5.
3. battery modules according to claim 2, which is characterized in that the monitoring conducting wire is in U-shape structure.
4. battery modules according to claim 2, which is characterized in that the explosion-proof valve has along the length side of the substrate
To the center line of extension, the first segment and the second segment are respectively arranged at the two sides of the center line.
5. battery modules according to claim 2, which is characterized in that the outer diameter D of the monitoring conducting wire, wherein 0.1mm≤
D≤2mm, the minimum spacing H between the first segment and the second segment, wherein 5mm≤H≤50mm.
6. battery modules according to claim 1, which is characterized in that the substrate is equipped with receiving portion, and the monitoring is led
Line is set to described accommodation section, and the shape of the monitoring conducting wire and the shape of described accommodation section match.
7. battery modules according to claim 6, which is characterized in that described accommodation section is the thickness direction along the substrate
The groove of recess, the bottom wall of the groove is not through the substrate.
8. battery modules according to claim 6, which is characterized in that described accommodation section is passed through along the thickness direction of the substrate
The substrate is worn, the monitoring conducting wire is less than the thickness of the substrate, and the prison along the full-size of the thickness direction
Conducting wire is surveyed to be set in described accommodation section.
9. battery modules according to claim 6, which is characterized in that the monitoring assembly further includes wrapping up the monitoring to lead
The insulating layer of line, the insulating layer are filled in described accommodation section, and the monitoring conducting wire is connected by the insulating layer and the substrate
It connects.
10. battery modules according to claim 9, which is characterized in that the insulating layer with a thickness of M, the monitoring is led
The maximum outside diameter of line is D, wherein 0.05≤M/D≤10.
11. battery modules according to claim 10, which is characterized in that the insulating layer is set under the monitoring conducting wire
The part of side is along the thickness direction with a thickness of M.
12. battery modules described in 0 or 11 according to claim 1, which is characterized in that the thickness M of the insulating layer, wherein
0.1mm≤M≤1mm。
13. battery modules according to claim 1, which is characterized in that the monitoring assembly further includes protective plate, along described
The thickness direction of substrate, the protective plate are set to the substrate close to the side of the secondary cell.
14. battery modules according to claim 1, which is characterized in that the monitoring assembly further includes isolation board, along described
The thickness direction of substrate, the isolation board are set to side of the substrate far from the secondary cell.
15. a kind of battery pack, which is characterized in that including the described in any item battery modules of such as claim 1 to 14.
16. battery pack according to claim 15, which is characterized in that the quantity of the battery modules is more than two, and two
The respectively included monitoring conducting wire series connection of a the above battery modules.
17. a kind of battery pack characterized by comprising
Battery unit；
Lid is set to above the battery unit；
Monitoring assembly, the monitoring assembly are set to the lid, and the monitoring assembly includes substrate and monitors conducting wire, described
Monitoring conducting wire is connect with the substrate；When quick-fried spray occurs for the battery unit, the monitoring conducting wire can be disconnected, to realize to institute
State the monitoring of battery-unit condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614709.9U CN209730091U (en) | 2019-04-30 | 2019-04-30 | Battery modules and battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920614709.9U CN209730091U (en) | 2019-04-30 | 2019-04-30 | Battery modules and battery pack |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020220887A1 (en) * | 2019-04-30 | 2020-11-05 | 宁德时代新能源科技股份有限公司 | Battery module and battery pack |
| CN112332032A (en) * | 2020-06-23 | 2021-02-05 | 宁德时代新能源科技股份有限公司 | Battery pack and device using battery pack as power supply |
| CN112652838A (en) * | 2020-12-23 | 2021-04-13 | 中国第一汽车股份有限公司 | Integrated structure for delaying thermal runaway |
| WO2022151872A1 (en) * | 2021-01-18 | 2022-07-21 | 中国第一汽车股份有限公司 | Battery module group, battery assembly, and electric vehicle |
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2019
- 2019-04-30 CN CN201920614709.9U patent/CN209730091U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020220887A1 (en) * | 2019-04-30 | 2020-11-05 | 宁德时代新能源科技股份有限公司 | Battery module and battery pack |
| US11211667B2 (en) | 2019-04-30 | 2021-12-28 | Contemporary Amperex Technology Co., Limited | Battery module and battery pack |
| CN112332032A (en) * | 2020-06-23 | 2021-02-05 | 宁德时代新能源科技股份有限公司 | Battery pack and device using battery pack as power supply |
| WO2021258794A1 (en) * | 2020-06-23 | 2021-12-30 | 宁德时代新能源科技股份有限公司 | Battery pack, and device using same as power source |
| US11831036B2 (en) | 2020-06-23 | 2023-11-28 | Contemporary Amperex Technology Co., Limited | Battery pack and apparatus using battery pack as power supply |
| CN112652838A (en) * | 2020-12-23 | 2021-04-13 | 中国第一汽车股份有限公司 | Integrated structure for delaying thermal runaway |
| WO2022151872A1 (en) * | 2021-01-18 | 2022-07-21 | 中国第一汽车股份有限公司 | Battery module group, battery assembly, and electric vehicle |
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