CN219959112U - Battery collision detection device, battery pack, frame and vehicle - Google Patents
Battery collision detection device, battery pack, frame and vehicle Download PDFInfo
- Publication number
- CN219959112U CN219959112U CN202222961938.2U CN202222961938U CN219959112U CN 219959112 U CN219959112 U CN 219959112U CN 202222961938 U CN202222961938 U CN 202222961938U CN 219959112 U CN219959112 U CN 219959112U
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- battery
- management system
- strain gauge
- battery management
- cell
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- 238000001514 detection method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000004026 adhesive bonding Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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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 discloses a battery collision detection device which comprises a sensing component and a battery management system, wherein the sensing component is used for being connected with the battery management system, the sensing component is arranged on one side of a battery facing the ground and is electrically connected with the battery management system, and the sensing component generates an electric signal according to the deformation stress of one side of the battery facing the ground and sends the electric signal to the battery management system. The utility model also discloses a battery pack, a frame and a vehicle. The utility model can timely detect the collision condition of the battery pack.
Description
Technical Field
The utility model relates to the technical field of vehicle parts, in particular to a battery collision detection device, a battery pack, a vehicle frame and a vehicle.
Background
In the actual use process of the electric automobile, the bottom protection is very important. Under the working conditions that wheels sweep through pits, bulges or stone road surfaces and the like, the bottom of the pure electric vehicle is extremely easy to strike and scratch. Meanwhile, damage caused by abuse of the bottom is hidden at the bottom of the battery, and even some accidents are not caused by short-circuit fire at the moment, but the subsequent safety cannot be ensured.
At present, in the prior art, when the bottom of battery package receives the collision, the difficult perception of passenger or unable judgement damage condition, unable timely processing, the battery package probably has received the destruction this moment, appears thermal runaway easily in the operating mode of follow-up charge and discharge, causes higher risk.
Therefore, it is necessary to design a battery collision detection device, a battery pack, a vehicle frame, and a vehicle that can detect the collision situation of the battery pack in time.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a battery collision detection device, a battery pack, a vehicle frame and a vehicle, which can timely detect the collision condition of the battery pack.
The technical scheme of the utility model provides a battery pack collision detection device which comprises a sensing component and a battery management system, wherein the sensing component is used for being connected with the battery management system, the sensing component is arranged on one side of a battery facing the ground and is electrically connected with the battery management system, and the sensing component generates an electric signal according to the variant stress of one side of the battery facing the ground and sends the electric signal to the battery management system.
Optionally, the sensing component comprises at least one of a strain gauge and a resistance layer, the strain gauge is arranged at the bottom of a battery cell of the battery and is applied, the resistance layer is covered on one side of a bottom guard plate, which faces the battery, and the strain gauge and the resistance layer are respectively electrically connected with the battery management system.
Optionally, the strain gauge is provided with a plurality of, the strain gauge is connected in the bottom of electric core along the length direction of electric core, and a plurality of the strain gauge is arranged along the width direction of electric core respectively.
Optionally, the strain gauge is adhesively fixed at the bottom of the battery cell.
Optionally, the end of the strain gauge is electrically connected with the battery management system through a flat wire harness, the thickness of the flat wire harness is equal to that of the strain gauge, one end of the flat wire harness is connected with the strain gauge, and the other end of the flat wire harness is connected with the battery management system.
Optionally, the resistance layer includes resistance wire and insulating film, and a plurality of resistance wire covers the upper surface of backplate, and a plurality of resistance wire sets up in the insulating film, a plurality of resistance wire is established ties between.
The utility model also discloses a battery pack, which comprises a bottom guard plate, a battery core and the battery pack collision detection device, wherein the resistance layer is covered on the bottom guard plate, the strain gauge is covered at the bottom of the battery core, and the resistance layer is arranged between the bottom guard plate and the strain gauge.
Optionally, the system further comprises a charge and discharge system and a water pump, and the battery management system is respectively in communication connection with the charge and discharge system and the water pump.
The utility model also discloses a vehicle frame, which comprises the battery pack.
The utility model also discloses a vehicle comprising the frame.
After the technical scheme is adopted, the method has the following beneficial effects:
in the battery pack collision detection device, when the bottom of the battery pack is penetrated by a sharp object to puncture or is extruded by a blunt object, the sensing assembly can generate an electric signal according to the abnormal stress towards one side of the ground to send the electric signal to the battery management system, so that the battery collision condition can be detected, the battery pack collision condition can be detected in time, and the safety of a vehicle is improved.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present utility model. In the figure:
fig. 1 is an exploded view of a battery pack collision detecting apparatus in one embodiment of the present utility model;
FIG. 2 is a schematic illustration of the connection of a bottom shield to a resistive layer in one embodiment of the present utility model;
FIG. 3 is a schematic diagram of the connection of a cell to a strain gage in one embodiment of the utility model;
fig. 4 is a schematic view showing a connection structure of a battery pack collision detecting apparatus in one embodiment of the present utility model.
Reference numeral control table:
strain gage 10, flat harness 101, resistive layer 20, battery management system 30, cell 40, and bottom shield 50.
Detailed Description
Specific embodiments of the present utility model will be further described below with reference to the accompanying drawings.
It is to be readily understood that, according to the technical solutions of the present utility model, those skilled in the art may replace various structural modes and implementation modes with each other without changing the true spirit of the present utility model. Accordingly, the following detailed description and drawings are merely illustrative of the utility model and are not intended to limit or restrict the utility model in its entirety or to apply for the utility model.
Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The above-described specific meanings belonging to the present utility model are understood as appropriate by those of ordinary skill in the art.
In one embodiment, the utility model discloses a battery pack collision detection device, which comprises a sensing assembly and a battery management system 30, wherein the sensing assembly is used for being connected with the battery management system, is arranged on one side of a battery facing the ground and is electrically connected with the battery management system 30, and the sensing assembly generates an electric signal according to the differential stress of one side of the battery facing the ground and sends the electric signal to the battery management system 30.
When the bottom of the battery pack is penetrated by a sharp object to puncture or extruded by a blunt object, the sensing assembly can generate an electric signal according to the deformation stress towards one side of the ground and send the electric signal to the battery management system, so that the collision condition of the battery can be detected, the collision condition of the battery pack can be detected in time, and the safety of a vehicle is improved.
Further, as shown in fig. 1, the sensing component includes at least one of a strain gauge 10 and a resistance layer 20, wherein the strain gauge 10 is disposed at the bottom of a cell 40 of the battery, the resistance layer 20 is covered on a bottom guard plate 50 and used towards the battery, and the strain gauge 10 and the resistance layer 20 are respectively electrically connected with a battery management system 30.
Further, the resistor layer 20 is disposed at the bottom of the strain gauge 10, the resistor layer 20 is disposed on the upper surface of the bottom guard plate 50 and completely covers the bottom of the battery cell 40, and the strain gauge 10 completely covers the bottom of the battery cell 40, wherein, due to the collision of the bottom of the battery pack, the bottom guard plate 50 is pierced or ruptured by sharp objects, and under such conditions, the resistor layer 20 disposed on the bottom guard plate 50 is pierced or ruptured, so that the resistance of the resistor layer 20 is changed, and the battery management system 30 can carry out linkage alarm with in-cabin equipment to remind passengers after detecting signals. The second working condition is that the deformation of the bottom guard plate 50 is caused by the extrusion of blunt objects, and when the deformation of the bottom guard plate 50 reaches a certain degree, the strain gauge 10 is deformed, so that an electric signal is transmitted to the battery management system 30, and the battery management system 30 can carry out linkage alarm with in-cabin equipment to remind passengers.
Still further, the battery management system 30 can be electrically connected with a sound, a display, or a warning light in the cabin, and can be linked with equipment in the cabin to give an alarm when a collision accident occurs, so as to remind passengers to park nearby, keep away from the vehicle and wait for rescue. In addition, the battery management system 30 can also be electrically connected to a battery charging and discharging system so that the charging and discharging power of the battery can be limited when an accident occurs. The battery management system 30 can also be linked with the water pump, and when accidents occur, the water pump can be triggered to be started so as to cool the battery, so that the thermal runaway of the battery pack can be avoided, and the safety of passengers is ensured.
In the utility model, the two collision working conditions can be monitored by arranging the resistance layer 20 and the strain gauge 10, so that false alarm and missing alarm are avoided, and the collision condition of the battery pack can be detected in time.
In some embodiments of the present utility model, as shown in fig. 1 and 3, the plurality of strain gages 10 are provided, the strain gages 10 are connected to the bottom of the cell 40 along the length direction of the cell 40, and the plurality of strain gages 10 are respectively arranged along the width direction of the cell 40.
Further, as shown in fig. 3, the plurality of electric cells 40 are respectively arranged at intervals, wherein the number of the strain gages 10 is the same as the number of the electric cells 40, wherein the strain gages 10 are connected to the bottom of the electric cells 40, the strain gages 10 cover the bottoms of the electric cells 40 as much as possible, preferably, the length and the width of the strain gages 10 are equal to those of the electric cells 40, so as to ensure that the strain gages 10 can completely cover the bottoms of each electric cell 40, and ensure that the strain gages 10 can be detected when collision accidents occur at each position.
Preferably, as shown in fig. 3 and 4, the strain gauge 10 is in a strip-shaped sheet structure, and each strain gauge 10 is respectively corresponding to each group of electric cells 40.
Alternatively, the strain gage 10 is provided one, and a single strain gage 10 covers the lower surfaces of all the cells 40.
Alternatively, the strain gage 10 may also be arranged in the width direction of the cells 40, i.e., a single strain gage 10 is arranged across multiple cells 40.
In some embodiments of the present utility model, the strain gauge 10 is adhesively secured to the bottom of the cell 40. The upper surface of the strain gauge 10 is coated with an adhesive, and the strain gauge 10 is adhered and fixed at the bottom of the battery cell 40 through the adhesive. Preferably, the upper surface of the strain gauge 10 is completely attached to the lower surface of the battery cell 40, so as to avoid false alarm caused by deformation of the strain gauge 10 due to movement of the strain gauge 10 relative to the battery cell 40 caused by vibration of the vehicle during running.
In some embodiments of the present utility model, as shown in fig. 1 and 3, the end of the strain gauge 10 is electrically connected to the battery management system 30 through a flat wire harness 101, the thickness of the flat wire harness 101 is equal to the thickness of the strain gauge 10, and one end of the flat wire harness 101 is connected to the strain gauge 10 and the other end is connected to the battery management system 30.
Further, a flat harness 101 is connected to each strain gage 10, and a plurality of uneven harnesses are electrically connected to the battery management system 30 to transmit signals to the battery management system 30. Wherein, the thickness of the strain gauge 10 can be reduced by the flat harness 101, and the flat harness 101 is not easily crushed.
Further, as shown in fig. 3, a notch 102 is provided at the end of the strain gauge 10, and the end of the flat wire harness 101 is connected in the notch 102, so that the thickness of the strain gauge 10 is not increased and the flat wire harness 101 is ensured not to press the strain gauge 10.
In some embodiments of the present utility model, as shown in fig. 1 and 2, the lower surface of the resistive layer 20 is fixed to the upper surface of the bottom guard plate 50 by adhesive bonding, and the upper surface of the resistive layer 20 is fixed to the lower surface of the strain gauge 10 by adhesive bonding.
Since the resistive layer 20 is disposed on the lower surface of the strain gauge 10, when the bottom guard plate 50 is punctured or ruptured, the collision-guiding condition can be detected in time through the resistive layer 20. In addition, when puncture or rupture occurs, since the strain gauge 10 is further disposed between the cell 40 and the resistive layer 20, the strain gauge 10 can also play a role in protecting the cell 40, and when the degree of rupture or puncture is not serious, the cell 40 can be prevented from being damaged.
In some embodiments of the present utility model, the resistive layer 20 includes a resistive wire and an insulating film, the plurality of resistive wires being covered on the upper surface of the bottom guard plate 50, the plurality of resistive wires being disposed within the insulating film, the plurality of resistive wires being connected in series therebetween.
Further, the insulation film can protect the resistance wires, when puncture or rupture occurs, one of the resistance wires breaks, so that the resistance layer 20 cannot be electrified, the resistance of the resistance layer 20 tends to be infinite, and thus the puncture or rupture can be detected by the battery management system 30.
In some embodiments of the present utility model, the resistive layer 20 has a larger area projected onto the backplate 50 than the cells 40 have projected onto the backplate 50. To ensure that the resistive layer 20 completely covers the cells 40 and that the occurrence of punctures or tears in various locations of the bottom guard plate 50 can be detected.
The utility model also discloses a battery pack, which comprises a bottom guard plate 50, the battery cell 40 and the battery pack collision detection device, wherein the resistor layer 20 is covered on the bottom guard plate 50, the strain gauge 10 is covered at the bottom of the battery cell 40, and the resistor layer 20 is arranged between the bottom guard plate 50 and the strain gauge 10.
In some embodiments of the application, the battery management system 30 further includes a charge and discharge system and a water pump, respectively, in communication with the charge and discharge system and the water pump. The battery management system 30 communicates with a battery charge and discharge system to be able to limit the charge and discharge power of the battery when an accident occurs. The battery management system 30 communicates with the water pump, and when an accident occurs, the water pump can be triggered to be started to cool the battery, so that thermal runaway of the battery pack can be avoided, and the safety of passengers is ensured.
As a preferred embodiment of the present utility model, as shown in fig. 1 to 4, a battery pack collision detecting apparatus includes a strain gauge 10, a resistive layer 20, and a battery management system 30, wherein a plurality of strain gauges 10 are respectively adhered and fixed to a lower surface of a battery cell 40 by an adhesive, the strain gauge 10 completely covers the lower surface of the battery cell 40, and an end portion of the strain gauge 10 is connected to the battery management system 30 by a flat harness 101. The lower surface of the resistive layer 20 is fixed on the upper surface of the bottom guard plate 50 by adhesive bonding, and the upper surface of the resistive layer 20 is fixed on the lower surface of the strain gauge 10 by adhesive bonding, wherein the resistive layer 20 completely covers the upper surface of the bottom guard plate 50, and the resistive layer 20 is electrically connected with the battery management system 30.
Further, the resistor layer 20 includes resistor wires and an insulating film, a plurality of resistor wires cover the upper surface of the bottom guard plate 50, a plurality of resistor wires are arranged in the insulating film, a plurality of resistor wires are connected in series, a protection effect on the resistor wires can be achieved through the insulating film, when puncture or rupture occurs, one of the resistor wires breaks to cause the resistor layer 20 to be unable to be electrified, the resistance of the resistor layer 20 tends to be infinite, and thus the condition of puncture or rupture can be detected through the battery management system 30.
According to the battery pack collision detection device disclosed by the utility model, when a sharp object pierces or breaks the bottom guard plate 50, the resistance layer 20 arranged on the bottom guard plate 50 is pierced or broken, so that the resistance of the resistance layer 20 is changed, and the battery management system 30 can carry out linkage alarm with equipment in a cabin after detecting a signal so as to remind passengers. When the bottom guard 50 is deformed due to the extrusion of blunt objects, the strain gauge 10 is deformed when the deformation of the bottom guard 50 reaches a certain degree, so that an electric signal is transmitted to the battery management system 30, and the battery management system 30 can carry out linkage alarm with in-cabin equipment to remind passengers. According to the utility model, the two collision working conditions can be monitored by arranging the resistance layer 20 and the strain gauge 10, so that false alarm and missing alarm are avoided, and the collision condition of the battery pack can be detected in time.
The utility model also discloses a vehicle frame, which comprises the battery pack.
The utility model also discloses a vehicle comprising the frame.
The foregoing is only illustrative of the principles and preferred embodiments of the present utility model. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the utility model and should also be considered as the scope of protection of the present utility model.
Claims (9)
1. The battery collision detection device is characterized by comprising a sensing assembly used for being connected with a battery management system, wherein the sensing assembly is arranged on one side of a battery facing the ground and is electrically connected with the battery management system, and the sensing assembly generates an electric signal according to the deformation stress of one side of the battery facing the ground and sends the electric signal to the battery management system;
the sensing component comprises at least one of a strain gauge and a resistance layer, wherein the strain gauge is arranged at the bottom of a battery cell of the battery, the resistance layer is used by covering one side, facing the battery, of a bottom guard plate, and the strain gauge and the resistance layer are respectively and electrically connected with the battery management system.
2. The battery collision detecting device according to claim 1, wherein a plurality of the strain gauges are provided, the strain gauges are connected to the bottom of the cell in the longitudinal direction of the cell, and the plurality of the strain gauges are arranged in the width direction of the cell, respectively.
3. The battery collision detection device of claim 1, wherein the strain gauge is adhesively secured to the bottom of the cell.
4. The battery collision detection device according to claim 1, wherein an end portion of the strain gauge is electrically connected to the battery management system through a flat wire harness, a thickness of the flat wire harness is equal to a thickness of the strain gauge, one end of the flat wire harness is connected to the strain gauge, and the other end is connected to the battery management system.
5. The battery collision detection device according to claim 1, wherein the resistance layer includes a resistance wire and an insulating film, a plurality of the resistance wires are covered on the upper surface of the bottom guard plate, a plurality of the resistance wires are provided in the insulating film, and a plurality of the resistance wires are connected in series.
6. A battery pack comprising the battery collision detecting device according to any one of claims 1 to 5.
7. The battery pack of claim 6, further comprising a charge and discharge system and a water pump, the battery management system being communicatively coupled to the charge and discharge system and the water pump, respectively.
8. A vehicle frame comprising the battery pack of claim 7.
9. A vehicle comprising the frame of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222961938.2U CN219959112U (en) | 2022-11-04 | 2022-11-04 | Battery collision detection device, battery pack, frame and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222961938.2U CN219959112U (en) | 2022-11-04 | 2022-11-04 | Battery collision detection device, battery pack, frame and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219959112U true CN219959112U (en) | 2023-11-03 |
Family
ID=88549037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222961938.2U Active CN219959112U (en) | 2022-11-04 | 2022-11-04 | Battery collision detection device, battery pack, frame and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219959112U (en) |
-
2022
- 2022-11-04 CN CN202222961938.2U patent/CN219959112U/en active Active
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