CN218021194U - Battery pack protection device - Google Patents
Battery pack protection device Download PDFInfo
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- CN218021194U CN218021194U CN202222400934.7U CN202222400934U CN218021194U CN 218021194 U CN218021194 U CN 218021194U CN 202222400934 U CN202222400934 U CN 202222400934U CN 218021194 U CN218021194 U CN 218021194U
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- connecting rod
- telescopic connecting
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
In the battery pack protection device disclosed by the utility model, the battery pack is fixed below the fixed platform, and the fixed platform is connected with the movable platform through the non-telescopic connecting rod and the telescopic connecting rod; the non-telescopic connecting rod is connected with the angular position between the fixed platform and the movable platform, the telescopic connecting rod is connected with the central position between the fixed platform and the movable platform, and the non-telescopic connecting rod is rotatably connected with the fixed platform and the movable platform. When the movable platform is impacted, the lower end of the non-telescopic connecting rod moves to drive the movable platform to generate lateral displacement towards the direction close to the fixed platform. Because the non-telescopic connecting rod and the telescopic connecting rod are arranged in the opposite direction, when the telescopic connecting rod is compressed to the limit, the telescopic connecting rod, the non-telescopic connecting rod fixed platform and the movable platform form a stable structure, so that a battery pack of a vehicle is effectively protected, and the risks of fire explosion and the like caused by the fact that the battery pack is sunken and deformed in the driving process of the vehicle are reduced.
Description
Technical Field
The utility model belongs to new energy automobile battery protection field especially relates to a battery package protection device.
Background
When an accident occurs to the electric vehicle, fire, sound, light, smoke and the like are usually accompanied, and the important reason is that once the collision of the high-energy carrier battery occurs, the risk of fire and explosion caused by instant energy release may exist.
In the prior art, a battery pack of a new energy vehicle is placed on a frame through a battery tray, and the bottom of the battery pack is exposed below a chassis of the new energy vehicle.
Because if the battery package bottom takes place to collide with at the in-process of traveling, the risk of damage appears easily in the battery tray, causes the battery package sunken deformation, and then leads to the battery package to appear risks such as explosion on fire.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to provide a battery package protection device can slow down the impact force that the movable platform receives when other projections striking of car in the driving process, and then effectively protect the battery package of vehicle.
In order to achieve the above purpose, the embodiment of the utility model discloses following technical scheme:
the utility model provides a battery pack protection device, which comprises a battery pack, a fixed platform, a movable platform, a non-telescopic connecting rod and a telescopic connecting rod;
the battery pack is fixed below the fixed platform;
the fixed platform is connected with the movable platform through the non-telescopic connecting rod and the telescopic connecting rod; the non-telescopic connecting rod is connected with the angular position between the fixed platform and the movable platform, and the telescopic connecting rod is connected with the central position between the fixed platform and the movable platform; the non-telescopic connecting rod and the telescopic connecting rod are arranged in opposite directions;
the non-telescopic connecting rod is rotatably connected with the fixed platform and the movable platform; at least one end of the telescopic connecting rod is in rotary connection with the fixed platform and the movable platform;
when the movable platform receives impact force, the lower end of the non-telescopic connecting rod connected with the movable platform moves towards the fixed platform, and the lower end of the non-telescopic connecting rod drives the movable platform to be close to the fixed platform to generate lateral displacement.
Optionally, the fixed platform comprises a plurality of upper fixed supports, the upper fixed supports are fixed below the fixed platform, and the upper ends of the non-telescopic connecting rods and the telescopic connecting rods are respectively connected with the upper fixed supports;
the movable platform comprises a plurality of lower fixed supports, the lower fixed supports are fixed above the movable platform, and the lower ends of the non-telescopic connecting rods and the telescopic connecting rods are respectively connected with the lower fixed supports.
Optionally, the upper end of the non-telescopic connecting rod is connected with the upper fixed support of the fixed platform through a rotating pair, and the lower end of the non-telescopic connecting rod is connected with the lower fixed support of the movable platform through a rotating pair;
at least one end of the telescopic connecting rod is connected with the upper fixed support of the fixed platform and the lower fixed support of the movable platform through a rotating pair.
Optionally, the projection position of the upper fixed support on the movable platform is not coincident with the fixing position of the lower fixed support.
Optionally, the telescopic connecting rod comprises a displacement sensor, and the displacement sensor is used for sending warning information to a vehicle control unit through the displacement sensor when the telescopic connecting rod displacement is greater than a preset displacement threshold.
Optionally, the displacement sensor is any one of a potentiometer displacement sensor, an inductive displacement sensor, and a hall displacement sensor.
Optionally, the telescopic link comprises a shock absorber for reducing the impact force to the movable platform.
Optionally, the telescopic link further comprises a spring mounted on the outer cylinder of the shock absorber.
Optionally, the displacement sensor is further configured to send emergency braking information to a vehicle control unit through the displacement sensor when the expansion amount of the spring is greater than a preset expansion amount threshold.
In the battery pack protection device disclosed by the utility model, the battery pack is fixed below the fixed platform, and the fixed platform is connected with the movable platform through the non-telescopic connecting rod and the telescopic connecting rod; the non-telescopic connecting rod is connected with an angular position between the fixed platform and the movable platform, the telescopic connecting rod is connected with a central position between the fixed platform and the movable platform, the non-telescopic connecting rod and the telescopic connecting rod are arranged in a reverse direction, and the non-telescopic connecting rod is rotatably connected with the fixed platform and the movable platform. When the movable platform is impacted, the lower end of the non-telescopic connecting rod connected with the movable platform moves towards the fixed platform, and the lower end of the non-telescopic connecting rod drives the movable platform to generate lateral displacement towards the direction close to the fixed platform when moving. Because the non-telescopic connecting rod and the telescopic connecting rod are arranged in the opposite direction, when the telescopic connecting rod is compressed to the limit, the telescopic connecting rod, the non-telescopic connecting rod fixed platform and the movable platform form a stable structure, so that a battery pack of a vehicle is effectively protected, the risks of fire, explosion and the like caused by the fact that the battery pack is sunken and deformed in the driving process of the vehicle are reduced, and the non-telescopic connecting rod and the telescopic connecting rod have the advantages of simple and compact structure, low cost and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a right side view of a battery pack protection device according to an embodiment of the present invention;
fig. 2 is a right side view of a fixing support in a battery pack protection device according to an embodiment of the present invention;
fig. 3a is a schematic view illustrating an example of a structure of a rotating pair in a battery pack protection device according to an embodiment of the present invention;
fig. 3b is a schematic diagram illustrating an example of a structure of a rotating pair in another battery pack protection device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a displacement sensor in a battery pack protection device according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a retractable connecting rod in a battery pack protection device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In order to facilitate understanding of the technical solutions provided by the present invention, the following description will be made first of all on the background art related to the present invention.
In the prior art, a battery pack of a new energy vehicle is placed on a frame through a battery tray, and the bottom of the battery pack is exposed below a chassis of the new energy vehicle.
If the battery package bottom takes place to collide with in the driving process, because battery tray generally is formed by aluminium material manufacturing, aluminium battery tray hardness is lower, and the risk of damage appears easily in battery tray, causes the sunken deformation of battery package, and then leads to the battery package to appear risks such as explosion on fire.
In order to facilitate understanding of the technical solution provided by the present invention, the following description will be made with reference to the accompanying drawings.
Referring to fig. 1, which is a right side view of a battery pack protection device according to an embodiment of the present invention, as shown in fig. 1, the device includes: a fixed platform 101, a movable platform 102, a battery pack 103, a first non-telescopic link 1041, a second non-telescopic link 1042 and a first telescopic link 1051.
The battery pack 103 is fixed below the fixed platform 101, and the fixed platform 101 is connected with the movable platform 102 through a first non-telescopic connecting rod 1041, a second non-telescopic connecting rod 1042 and a first telescopic connecting rod 1051; the first non-telescopic link 1041 and the second non-telescopic link 1042 are connected to an angular position between the fixed platform 101 and the movable platform, the first telescopic link 1051 is connected to a central position between the fixed platform 101 and the movable platform, and the non-telescopic links and the telescopic links are arranged in an opposite direction. It can be understood that in the initial state, the non-telescopic connecting rod, the fixed platform and the movable platform form a stable structure.
The first non-telescopic link 1041 and the second non-telescopic link 1042 are rotatably connected to the fixed platform 101 and the movable platform 102, and at least one end of the first telescopic link 1051 is rotatably connected to the fixed platform 101 and the movable platform 102.
It is understood that the first retractable link 1051 may be rotatably connected to the fixed platform 101 and fixedly connected to the movable platform 102, or the first retractable link 1051 may also be rotatably connected to the movable platform 102 and fixedly connected to the fixed platform 101, or the first retractable link 1051 may be rotatably connected to both the fixed platform 101 and the movable platform 102, which is not limited herein.
When the movable platform 102 is impacted, the lower ends of the first non-telescopic link 1041 and the second non-telescopic link 1042 connected to the movable platform 102 move toward the fixed platform 101, and the lower ends of the first non-telescopic link 1041 and the second non-telescopic link 1042 move to drive the movable platform 102 to laterally displace toward the fixed platform 101. Because the non-telescopic connecting rod and the telescopic connecting rod are arranged in the opposite direction, when the telescopic connecting rod is compressed to the limit, the telescopic connecting rod, the non-telescopic connecting rod fixed platform and the movable platform form a stable structure, so that a battery pack of a vehicle is effectively protected, and the risks of fire explosion and the like caused by the fact that the battery pack is sunken and deformed in the driving process of the vehicle are reduced.
As a possible implementation manner, refer to fig. 2, fig. 2 is a schematic structural diagram of a fixing support in a battery pack protection device according to an embodiment of the present invention. On the basis of a fixed platform 101, a movable platform 102, a battery pack 103, a first non-telescopic connecting rod 1041, a second non-telescopic connecting rod 1042 and a first telescopic connecting rod 1051, the fixed platform 101 further comprises a first upper fixed support 201, a second upper fixed support 202 and a third upper fixed support 203, and the movable platform 102 further comprises a first lower fixed support 204, a second lower fixed support 205 and a third lower fixed support 206.
The first upper fixed support 201, the second upper fixed support 202 and the third upper fixed support 203 are fixed below the fixed platform, the upper end of the first non-telescopic connecting rod 1041 is connected with the first upper fixed support 201, the upper end of the telescopic connecting rod is connected with the second upper fixed support 202, and the upper end of the second non-telescopic connecting rod 1042 is connected with the third upper fixed support 203.
The first lower fixed support 204, the second lower fixed support 205 and the third lower fixed support 206 are fixed above the movable platform, the lower end of the first non-telescopic connecting rod 1041 is connected with the first lower fixed support 204, the lower end of the telescopic connecting rod is connected with the second lower fixed support 205, and the lower end of the second non-telescopic connecting rod 1042 is connected with the third lower fixed support 206.
As a possible implementation mode, the upper end of the non-telescopic connecting rod is connected with the upper fixed support of the fixed platform through a rotating pair, and the lower end of the non-telescopic connecting rod is connected with the lower fixed support of the movable platform through a rotating pair; at least one end of the telescopic connecting rod is connected with the upper fixed support of the fixed platform and the lower fixed support of the movable platform through a rotating pair.
It can be understood that, in the embodiment of the present invention, the connection manner of the retractable connecting rod is exemplified, and exemplarily, in example 1, the retractable connecting rod may be fixedly connected to the upper fixing support of the fixed platform, and connected to the lower fixing support of the movable platform through a revolute pair. In example 1, reference may be made to fig. 3a, and fig. 3a is a schematic diagram illustrating an example of a structure of a rotating pair in a battery pack protection device according to an embodiment of the present invention.
The device is characterized by further comprising a third non-telescopic connecting rod 1043, a fourth non-telescopic connecting rod 1043, a second telescopic connecting rod 1052, a fourth upper fixed support 207, a fifth upper fixed support 208, a sixth upper fixed support 209, a fourth lower fixed support 210, a fifth lower fixed support 211 and a sixth lower fixed support 212 on the basis of a fixed platform 101, a movable platform 102, a battery pack 103, a first non-telescopic connecting rod 1041, a second non-telescopic connecting rod 1042, a first telescopic connecting rod 1051, a first upper fixed support 201, a second upper fixed support 202, a third upper fixed support 203, a first lower fixed support 204, a second lower fixed support 205 and a third lower fixed support 206; a first revolute pair R1, a second revolute pair R2, a third revolute pair R3, a fourth revolute pair R4, a fifth revolute pair R5, a sixth revolute pair R6, a seventh revolute pair R7, an eighth revolute pair R8, a ninth revolute pair R9 and a tenth revolute pair R10.
The upper end of the first non-telescopic link 1041 is connected to the first upper fixed support 201 of the fixed platform 101 through a first revolute pair R1, the upper end of the first telescopic link 1051 is fixedly connected to the second upper fixed support 202 of the fixed platform 101, and the upper end of the second non-telescopic link 1042 is connected to the third upper fixed support 203 of the fixed platform 101 through a second revolute pair R2.
The lower end of the first non-telescopic link 1041 is connected to the first lower fixed support 204 of the moving platform 102 through a third revolute pair R3, the lower end of the first telescopic link 1051 is connected to the second lower fixed support 205 of the moving platform 102 through a fourth revolute pair R4, and the lower end of the second non-telescopic link 1042 is connected to the third lower fixed support 206 of the moving platform 102 through a fifth revolute pair R5.
The upper end of the third non-telescopic link 1043 is connected to the fourth upper fixed support 207 of the fixed platform 101 through a sixth revolute pair R6, the upper end of the second telescopic link 1052 is fixedly connected to the fifth upper fixed support 208 of the fixed platform 101, and the upper end of the fourth non-telescopic link 1044 is connected to the sixth upper fixed support 209 of the fixed platform 101 through a seventh revolute pair R7.
The lower end of the third non-telescopic link 1043 is connected to the fourth lower fixed support 210 of the movable platform 102 through an eighth rotation pair R8, the lower end of the second telescopic link 1052 is connected to the fifth lower fixed support 211 of the movable platform 102 through a ninth rotation pair R9, and the lower end of the fourth non-telescopic link 1044 is connected to the sixth lower fixed support 212 of the fixed platform 102 through a tenth rotation pair R10.
In example 2, the telescopic connecting rod can be connected with an upper fixed support rotating pair of the fixed platform and connected with a lower fixed support of the movable platform through a rotating pair. Example 2 can refer to fig. 3b, and fig. 3b is a schematic view illustrating a structure of a rotating pair in another battery pack protection device according to an embodiment of the present invention.
The device is characterized by further comprising a third non-telescopic connecting rod 1043, a fourth non-telescopic connecting rod 1043, a telescopic connecting rod 1052, a fourth upper fixed support 207, a fifth upper fixed support 208, a sixth upper fixed support 209, a fourth lower fixed support 210, a fifth lower fixed support 211 and a sixth lower fixed support 212 on the basis of a fixed platform 101, a movable platform 102, a battery pack 103, a first non-telescopic connecting rod 1041, a second non-telescopic connecting rod 1042, a first telescopic connecting rod 1051, a first upper fixed support 201, a second upper fixed support 202, a third upper fixed support 203, a first lower fixed support 204, a second lower fixed support 205 and a third lower fixed support 206; a first revolute pair R1, a second revolute pair R2, a third revolute pair R3, a fourth revolute pair R4, a fifth revolute pair R5, a sixth revolute pair R6, a seventh revolute pair R7, an eighth revolute pair R8, a ninth revolute pair R9, a tenth revolute pair R10, an eleventh revolute pair R11 and a twelfth revolute pair R12.
The upper end of the first non-telescopic link 1041 is connected to the first upper fixed support 201 of the fixed platform 101 through a first revolute pair R1, the upper end of the first telescopic link 1051 is connected to the second upper fixed support 202 of the fixed platform 101 through a second revolute pair R2, and the upper end of the second non-telescopic link 1042 is connected to the third upper fixed support 203 of the fixed platform 101 through a third revolute pair R3.
The lower end of the first non-telescopic link 1041 is connected to the first lower fixed support 204 of the movable platform 102 through a fourth revolute pair R4, the lower end of the first telescopic link 1051 is connected to the second lower fixed support 205 of the movable platform 102 through a fifth revolute pair R5, and the lower end of the second non-telescopic link 1042 is connected to the third lower fixed support 206 of the movable platform 102 through a sixth revolute pair R6.
The upper end of the third non-telescopic link 1043 is connected to the fourth upper fixed support 207 of the fixed platform 101 through a seventh revolute pair R7, the upper end of the second telescopic link 1052 is connected to the fifth upper fixed support 208 of the fixed platform 101 through an eighth revolute pair R8, and the upper end of the fourth non-telescopic link 1044 is connected to the sixth upper fixed support 209 of the fixed platform 101 through a ninth revolute pair R9.
The lower end of the third non-telescopic link 1043 is connected to the fourth lower fixed support 210 of the movable platform 102 through a tenth rotation pair R10, the lower end of the second telescopic link 1052 is connected to the fifth lower fixed support 211 of the movable platform 102 through an eleventh rotation pair R11, and the lower end of the fourth non-telescopic link 1044 is connected to the sixth lower fixed support 212 of the fixed platform 102 through a twelfth rotation pair R12.
It should be noted that the above description is only an example, and the embodiment of the present invention does not limit the connection manner of the retractable link.
It should be noted that the non-retractable connecting rod and the retractable connecting rod are arranged in the opposite direction, and then form a stable structure with the fixed platform and the movable platform, so that the battery pack of the vehicle is effectively protected, and the risks of fire and explosion and the like caused by the recessed deformation of the battery pack are reduced.
As a possible implementation manner, the projection position of the upper fixed support on the movable platform is not coincident with the fixed position of the lower fixed support, that is, the non-retractable connecting rod and the retractable connecting rod are arranged at an angle, so that the non-retractable connecting rod, the fixed platform and the movable platform form a stable structure, and the battery pack of the vehicle is effectively protected.
As a possible implementation manner, refer to fig. 4, and fig. 4 is a schematic structural diagram of a displacement sensor in a battery pack protection device according to an embodiment of the present invention.
First scalable link 1051 includes displacement sensor 401, displacement sensor 401 is used for when first scalable link 1051 displacement volume is greater than the displacement volume threshold that sets for in advance, through displacement sensor 401 to Vehicle Control Unit (VCU) send warning message, this warning message is used for reminding the driver that the link is in by the extruded state, and the battery package probably takes place the risk of colliding with.
It is understood that the displacement amount threshold value may be set in advance by the vehicle control unit according to the actual situation.
As a possible implementation manner, the displacement sensor may be any one of a 401 potentiometer displacement sensor, an inductive displacement sensor, and a hall displacement sensor.
As a possible implementation manner, referring to fig. 5, fig. 5 is a schematic structural diagram of a retractable connecting rod in another battery pack protection device according to an embodiment of the present invention. The device is based on first telescopic connecting rod 1051, displacement sensor 401, and first telescopic connecting rod 1051 further includes: a damper 501 and a spring 502. Wherein the spring 502 is mounted on the outer cylinder of the damper 501.
The shock absorber 501 is used for slowing down the impact force applied to the movable platform 102 when the automobile is impacted by other protrusions in the driving process when the movable platform is subjected to the impact force, so that the battery pack of the automobile is effectively protected, and the risks of fire and explosion caused by the fact that the battery pack is deformed due to depression are reduced.
As a possible implementation, the displacement sensor 401 is configured to send emergency braking information to the vehicle control unit VCU through the displacement sensor 401 when the amount of expansion and contraction of the spring 502 is greater than a preset expansion and contraction amount threshold, and the emergency braking information is configured to remind a driver to take emergency braking measures.
It is understood that the threshold value of the amount of expansion and contraction of the spring 502 may be set in advance by the vehicle control unit according to actual conditions.
It should be noted that, when the amount of expansion of the spring 502 reaches the maximum amount of expansion, the telescopic link and other non-telescopic links form a stable structure, so as to effectively protect the battery pack of the vehicle, and reduce the risk of fire and explosion of the battery pack caused by the deformation of the battery pack due to the recess.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above description of the embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. A battery pack protection device, the device comprising: the device comprises a battery pack, a fixed platform, a movable platform, a non-telescopic connecting rod and a telescopic connecting rod;
the battery pack is fixed below the fixed platform;
the fixed platform is connected with the movable platform through the non-telescopic connecting rod and the telescopic connecting rod; the non-telescopic connecting rod is connected with the angular position between the fixed platform and the movable platform, and the telescopic connecting rod is connected with the central position between the fixed platform and the movable platform; the non-telescopic connecting rod and the telescopic connecting rod are arranged in opposite directions;
the non-telescopic connecting rod is rotationally connected with the fixed platform and the movable platform; at least one end of the telescopic connecting rod is in rotary connection with the fixed platform and the movable platform;
when the movable platform is impacted, the lower end of the non-telescopic connecting rod connected with the movable platform moves towards the fixed platform, and the lower end of the non-telescopic connecting rod drives the movable platform to generate lateral displacement towards the direction close to the fixed platform when moving.
2. The device of claim 1, wherein the fixed platform comprises a plurality of upper fixed supports, the upper fixed supports are fixed below the fixed platform, and the upper ends of the non-telescopic connecting rods and the telescopic connecting rods are respectively connected with the upper fixed supports;
the movable platform comprises a plurality of lower fixed supports, the lower fixed supports are fixed above the movable platform, and the lower ends of the non-telescopic connecting rods and the lower ends of the telescopic connecting rods are respectively connected with the lower fixed supports.
3. The device according to claim 2, characterized in that the upper end of the non-telescopic connecting rod is connected with the upper fixed support of the fixed platform through a rotating pair, and the lower end of the non-telescopic connecting rod is connected with the lower fixed support of the movable platform through a rotating pair;
at least one end of the telescopic connecting rod is connected with the upper fixed support of the fixed platform and the lower fixed support of the movable platform through a rotating pair.
4. The apparatus of claim 2, wherein the projected position of the upper fixed support on the movable platform is not coincident with the fixed position of the lower fixed support.
5. The apparatus of claim 1, wherein the retractable link comprises a displacement sensor configured to send a warning message to a vehicle control unit via the displacement sensor when the amount of displacement of the retractable link is greater than a predetermined threshold amount of displacement.
6. The device of claim 5, wherein the displacement sensor is any one of a potentiometer displacement sensor, an inductive displacement sensor, and a Hall displacement sensor.
7. The apparatus of claim 5, wherein the retractable linkage comprises a shock absorber for reducing the impact force experienced by the moving platform.
8. The apparatus of claim 7, wherein the telescopic link further comprises a spring mounted to an outer cylinder of the shock absorber.
9. The apparatus of claim 8, wherein the displacement sensor is further configured to send emergency braking information to a vehicle control unit via the displacement sensor when the amount of expansion of the spring is greater than a preset expansion threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222400934.7U CN218021194U (en) | 2022-09-09 | 2022-09-09 | Battery pack protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222400934.7U CN218021194U (en) | 2022-09-09 | 2022-09-09 | Battery pack protection device |
Publications (1)
| Publication Number | Publication Date |
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| CN218021194U true CN218021194U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222400934.7U Active CN218021194U (en) | 2022-09-09 | 2022-09-09 | Battery pack protection device |
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|---|---|
| CN (1) | CN218021194U (en) |
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- 2022-09-09 CN CN202222400934.7U patent/CN218021194U/en active Active
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