CN218997005U - Battery pack and vehicle - Google Patents
Battery pack and vehicle Download PDFInfo
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- CN218997005U CN218997005U CN202222651801.7U CN202222651801U CN218997005U CN 218997005 U CN218997005 U CN 218997005U CN 202222651801 U CN202222651801 U CN 202222651801U CN 218997005 U CN218997005 U CN 218997005U
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- support plate
- battery
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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
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides a battery pack and a vehicle, wherein the battery pack comprises an insulating support plate and a plurality of electric cores, an exhaust channel is arranged in the insulating support plate, and an air inlet and an air outlet which are communicated with the exhaust channel are formed in the insulating support plate; the battery cell is provided with an explosion-proof valve, and the explosion-proof valve is opposite to the air inlet. Under the condition that the explosion-proof valve is in an open state, high-pressure gas in the battery cell passes through the exhaust channel and then is discharged through the gas outlet, namely, the high-pressure gas in the battery cell passes through the exhaust channel and then can be timely discharged out of the insulating support plate through the gas outlet, so that the internal and external pressures of the battery cell in the battery pack are balanced, the purpose of reducing the internal temperature of the battery pack is achieved, and the risk of thermal runaway of the battery pack is reduced.
Description
Technical Field
The utility model belongs to the technical field of battery structures, and particularly relates to a battery pack and a vehicle.
Background
The battery pack is used as a main power component of a vehicle, and generally comprises a battery cell, a housing for accommodating the battery cell and a top cover component connected to the housing, wherein an explosion-proof valve is usually arranged on the top cover component in order to improve the safety performance of the battery pack.
The battery pack can generate high-temperature and high-pressure gas in the battery pack in the operation process, and the explosion-proof valve can be opened after the high-temperature and high-pressure gas reaches a set threshold value. However, in the prior art, when the explosion-proof valve is broken by the gas and flame generated in the battery pack, the gas and flame are difficult to smoothly discharge from the battery pack, which causes risks for the stable operation of the battery pack and also easily causes injuries to personnel in the vehicle.
Disclosure of Invention
The utility model aims to provide a novel technical scheme of a battery pack and a vehicle, which can solve the problem that internal high-pressure gas is difficult to discharge in time when the battery pack is operated.
According to a first aspect of the present utility model, there is provided a battery pack comprising:
the box body comprises a cover plate and a tray which are connected with each other, and the cover plate and the tray are enclosed together to form an accommodating space;
the insulating support plate is arranged in the accommodating space and on the tray, an exhaust channel is arranged in the insulating support plate, and an air inlet and an air outlet which are communicated with the exhaust channel are formed in the insulating support plate;
the battery cells are arranged in the accommodating space, explosion-proof valves are arranged on the battery cells, the battery cells are arranged on the insulating support plate, and the explosion-proof valves on the battery cells are arranged towards the insulating support plate, so that the explosion-proof valves are opposite to the air inlets;
under the condition that the explosion-proof valve is in an open state, high-pressure gas in the battery cell is discharged through the gas outlet after passing through the gas discharge channel.
Optionally, the plurality of electric cores form a plurality of electric core groups arranged along a first direction, the electric core groups comprise a plurality of electric cores arranged side by side along a second direction, and the second direction is perpendicular to the first direction;
the insulating support plate is provided with a plurality of exhaust channels extending along a second direction, and each cell group corresponds to one exhaust channel.
Optionally, the air inlet is located on the insulating support plate near the top surface of the battery cell, and the air outlet is located on the insulating support plate at a side surface adjacent to the top surface.
The battery pack also comprises an air guide channel, wherein the air guide channel is positioned in the accommodating space, one end of the air guide channel is communicated with the air outlet of the air exhaust channel, and the other end of the air guide channel is communicated with the outside of the box body;
when the explosion-proof valve is in an open state, the gas in the battery cell sequentially passes through the exhaust channel and the gas guide channel and then is discharged out of the accommodating space.
Optionally, the battery pack includes a side plate;
the side plate is attached to the battery cell and separates an exhaust gap in the accommodating space, the exhaust gap is the air guide channel, and the air outlet is communicated with the exhaust gap;
and an exhaust pipeline is further arranged on the side wall of the box body, one end of the exhaust pipeline is communicated with the exhaust gap, and the other end of the exhaust pipeline is communicated to the outside of the battery pack.
Optionally, one end of the exhaust pipe extends along a first direction, and the other end of the exhaust pipe extends along a third direction after being bent, wherein the third direction is perpendicular to a plane formed by the second direction and the first direction.
Optionally, one end of the exhaust pipeline is provided with a waterproof ventilation valve; and/or the number of the groups of groups,
the other end of the exhaust pipeline is provided with a waterproof ventilation valve.
Optionally, the battery cell also comprises a connecting sheet, wherein the connecting sheet is arranged on one side of the insulating support plate far away from the battery cell;
the insulating support plate is provided with a through hole, and the electrode post on the battery core is electrically connected to the connecting sheet through the through hole.
Optionally, the device further comprises a sampling wire harness and a fixing structure, wherein the sampling wire harness is arranged on the insulating support plate, and the fixing structure is arranged on one side, away from the insulating support plate, of the connecting sheet and is used for fixing the connecting sheet.
Optionally, the fixing structure is a structural adhesive layer, a limiting groove is arranged on the structural adhesive layer, the connecting sheet comprises a main connecting sheet and a plurality of sub connecting sheets, and the sub connecting sheets are connected to the same side of the main connecting sheet;
and the electrode post on the battery core is electrically connected with the sub-connecting sheet, and the main connecting sheet is limited in the limiting groove.
According to a second aspect of the present utility model, there is provided a vehicle comprising the battery pack of the first aspect.
Optionally, the vehicle includes a floor and a skeleton beam, the skeleton beam is disposed on the floor and forms a receiving groove with the floor, and the battery pack is disposed in the receiving groove.
Optionally, the vehicle includes a frame beam, the frame beam and the box are integrally disposed and form a mounting cavity, and the battery cell is disposed in the mounting cavity.
Optionally, the skeleton beam comprises a cross beam arranged along a first direction and a longitudinal beam arranged along a second direction;
the battery pack comprises a side plate and an exhaust pipeline, wherein the side plate is positioned on the side surface of the battery cell and forms an exhaust gap with the cross beam, and the air outlet is communicated with the exhaust gap;
at least part of the exhaust pipeline is arranged in the longitudinal beam, one end of the exhaust pipeline is communicated with the exhaust gap, and the other end of the exhaust pipeline is communicated with the outside from the longitudinal beam.
Optionally, the battery pack comprises a distribution box, the cross beam comprises a front cross beam close to the head position of the vehicle and a rear cross beam close to the tail position of the vehicle, the side plate and the rear cross beam form the exhaust gap, and the distribution box is arranged on one side, far away from the side plate, of the rear cross beam and is electrically connected with the connecting sheet;
the other end of the exhaust pipeline is communicated with the outside from the bottom of the vehicle.
The utility model has the technical effects that:
the utility model provides a battery pack which comprises an insulating support plate and a plurality of electric cores, wherein the electric cores are arranged on the insulating support plate, and explosion-proof valves on the electric cores are arranged towards the insulating support plate. Under the condition that the explosion-proof valve is in an open state, high-pressure gas in the battery cell passes through the exhaust channel and then is discharged through the gas outlet, namely, the high-pressure gas in the battery cell can be timely discharged downwards through the gas outlet after passing through the exhaust channel, so that the internal and external pressures of the battery cell in the battery pack are balanced, the purpose of reducing the internal temperature of the battery pack is achieved, and the risk of thermal runaway of the battery pack is reduced.
Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a schematic illustration of a portion of a vehicle according to an embodiment of the present utility model;
FIG. 2 is a partial exploded view of a vehicle according to an embodiment of the present utility model;
fig. 3 is a schematic diagram illustrating the detachment of an insulating support plate and a connecting piece of a battery pack according to an embodiment of the present utility model;
fig. 4 is a schematic view of a portion of a vehicle (excluding a battery cell) according to an embodiment of the present utility model;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a partial side view of a vehicle according to an embodiment of the present utility model;
fig. 7 is a perspective view of a battery pack according to an embodiment of the present utility model.
Wherein:
1. an insulating support plate; 11. an exhaust passage; 12. an air inlet; 13. an air outlet; 14. a through hole; 2. a battery cell; 3. a connecting sheet; 31. a main connecting piece; 32. a sub-connecting piece; 4. direct cooling direct heating plate; 5. a side plate; 6. an exhaust duct; 7. a distribution box; 8. a buffer structure; 9. a protection plate; 10. a fixed structure; 101. a limit groove;
100. a bottom plate; 200. a frame beam; 201. a cross beam; 202. and (5) a longitudinal beam.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Referring to fig. 1 to 7, the present embodiment provides a battery pack that may be used for a power battery of a vehicle to provide sufficient running power to the vehicle. The battery pack includes:
the box body comprises a cover plate and a tray which are connected with each other, and the cover plate and the tray are enclosed together to form an accommodating space;
the insulation support plate 1 and a plurality of electric cores 2, the insulation support plate is located in the accommodation space and set up on the tray. Referring to fig. 5 to 7, one or more exhaust passages 11 are provided in the insulating support plate 1, and the insulating support plate 1 has an air inlet 12 and an air outlet 13 communicating with the exhaust passages 11; the tray is located at the bottom of the battery cell 2 and used for bearing the battery cell 2, and the cover plate covers the battery cell 2.
The battery cells are arranged in the accommodating space, the battery cells 2 are provided with explosion-proof valves, the battery cells 2 are arranged on the insulating support plate 1, the explosion-proof valves on the battery cells 2 are arranged towards the direction of the insulating support plate, and the insulating support plate is arranged on the tray because the tray is positioned at the bottom of the battery cells 2, so that the battery cells 2 form an inverted structure with the explosion-proof valves downwards on the insulating support plate, and meanwhile, the explosion-proof valves are opposite to the air inlets 12; that is, the number of the air inlets 12 communicating with one of the exhaust passages 11 may be plural so that the explosion-proof valves on the plural cells 2 are opposed to the plural air inlets 12 one by one.
When the explosion-proof valve is in an open state, high-pressure gas in the battery cell 2 passes through the exhaust channel 11 and then is discharged through the gas outlet 13. In the running process of the battery pack, due to overlong running time of the battery pack or overhigh environment temperature of the battery pack, high-pressure gas can be generated in the battery core 2 of the battery pack, when the pressure of the high-pressure gas in the battery core 2 reaches the threshold value of the explosion-proof valve action, the high-pressure gas in the battery core 2 can jack the explosion-proof valve, so that the high-pressure gas in the battery core 2 can be timely discharged out of the insulating support plate 1 through the air outlet 13 after passing through the air outlet channel 11, the internal and external pressure of the battery core 2 in the battery pack is balanced, the purpose of reducing the internal temperature of the battery pack is achieved, and the risk of thermal runaway of the battery pack is reduced.
And a plurality of electric cores 2 set up in on the insulating backup pad 1 and when the explosion-proof valve on the electric core 2 is towards insulating backup pad direction, namely electric core 2 is placed upside down on the insulating backup pad 1, at this moment the utmost point post on the electric core 2 can set up with the explosion-proof valve homonymy and be the state of inversion. That is, the tray is used to carry the battery cells, so that the explosion proof valve is in an inverted state when the insulating support plate 1 is disposed on the tray with the explosion proof valve facing the insulating support plate 1. Further, when the battery pack is disposed on the vehicle, the explosion-proof valve faces the ground, thereby forming an inverted state. The high-pressure gas in the battery cell 2 can be transmitted to the exhaust channel 11 from the lower side of the battery cell through the explosion-proof valve, and then is discharged from the air outlet 13 on the side surface of the insulating support plate 1, so that the situation that the safety of a vehicle cab is influenced due to the upward ejection of the high-pressure gas in the battery cell 2 is avoided, and the use safety of a battery pack is ensured.
Alternatively, referring to fig. 7, a plurality of the battery cells 2 form a plurality of battery cell groups arranged along a first direction, wherein the first direction may be an X direction in fig. 7, the battery cell groups include a plurality of battery cells 2 arranged side by side along a second direction, and the second direction may be a Y direction in fig. 7, and the second direction is perpendicular to the first direction;
the insulating support plate 1 is provided therein with a plurality of the exhaust passages 11 extending in the second direction, each of the cell groups corresponding to one of the exhaust passages 11.
Specifically, the plurality of the electric cores 2 may be arranged in a rectangular electric core unit, the plurality of electric core groups may be arranged along a width direction of the electric core unit, the width direction of the electric core unit may be an X direction in fig. 7, the electric cores 2 in each electric core group may be arranged side by side along a length direction of the electric core unit, and the length direction of the electric core unit may be a Y direction in fig. 7. The insulating support plate 1 may be a rectangular support plate corresponding to the battery cell unit, a plurality of exhaust channels 11 in the insulating support plate 1 extend along the length direction, and each battery cell group corresponds to one exhaust channel 11, that is, a plurality of air inlets 12 are arranged on one exhaust channel 11, and explosion-proof valves on a plurality of battery cells 2 in one battery cell group are opposite to the plurality of air inlets 12 one by one, so that each battery cell 2 in the battery cell group can quickly convey high-pressure gas inside the battery cell group to the corresponding exhaust channel 11 through the explosion-proof valve.
In one embodiment, four cell groups are arranged along the width direction of the cell unit, and four exhaust channels 11 are arranged in the insulating support plate 1 at equal intervals, and each cell group corresponds to one exhaust channel 11. When each row of cell groups generates high-pressure gas, the explosion-proof valve at the lower part of the cell 2 gathers the high-pressure gas into the exhaust channel 11 and can be discharged to the atmosphere through the exhaust channel integrated on the vehicle longitudinal beam at the rear part of the battery pack, at this time, the port of the exhaust channel 11 at the front part of the battery pack is closed, so that the high-pressure gas can be discharged only at the rear part of the battery pack.
Alternatively, referring to fig. 7, the air inlet 12 is located on the insulating support plate 1 near the top surface of the battery cell 2, and the air outlet 13 is located on the insulating support plate 1 at the side adjacent to the top surface.
Specifically, when the air inlet 12 is located on the top surface of the insulating support plate 1, it is convenient that the explosion-proof valve on the electric core 2 is opposite to the air inlet 12 when the electric core 2 is reversely arranged on the insulating support plate 1, and the high-pressure gas in the electric core 2 can be transmitted to the air exhaust channel 11 from below the electric core unit through the explosion-proof valve, so that the high-pressure gas in the electric core 2 is discharged from the air outlet 13 on the side surface of the insulating support plate 1, and the situation that the use safety of the battery pack is affected due to the upward ejection of the high-pressure gas in the electric core 2 is avoided.
The battery pack also comprises an air guide channel, wherein the air guide channel is positioned in the accommodating space, one end of the air guide channel is communicated with the air outlet of the air exhaust channel, and the other end of the air guide channel is communicated with the outside of the box body;
when the explosion-proof valve is in an open state, the gas in the battery cell 2 sequentially passes through the exhaust channel 11 and the gas guide channel and then is discharged out of the accommodating space, so that a path for discharging high-pressure gas in the battery cell 2 is increased, and the use safety of the battery pack is ensured.
Optionally, the battery pack comprises a side plate 5;
the side plate 5 is attached to the battery cell 2 and separates an exhaust gap in the accommodating space, the exhaust gap is the air guide channel, and the air outlet 13 is communicated with the exhaust gap;
the side wall of the box body is also provided with an exhaust pipeline 6, one end of the exhaust pipeline 6 is communicated with the exhaust gap, and the other end of the exhaust pipeline 6 is communicated to the outside of the battery pack.
Specifically, one end of the exhaust pipe 6 is communicated with the exhaust gap, and after the other end of the exhaust pipe 6 is externally communicated, the external discharge of the high-pressure gas in the battery cell 2 can be realized, so that the smoothness of the discharge of the high-pressure gas in the battery cell 2 is ensured.
Specifically, the box body may include a protection structure such as a battery tray or a battery housing, so as to store and protect the insulating support plate 1 and the battery core 2 in the battery pack, and the exhaust gap formed between the side plate 5 and the box body may buffer high-pressure gas exhausted from the exhaust channel 11, so as to ensure the internal safety of the battery pack. The high-pressure gas buffered in the exhaust gap can be discharged outwards through an exhaust pipeline 6 arranged in the box body, so that the stable operation of the battery pack is ensured.
Optionally, one end of the exhaust pipe 6 extends along a first direction, and the other end of the exhaust pipe 6 extends along a third direction after being bent, wherein the third direction is perpendicular to a plane formed by the second direction and the first direction.
Specifically, the bottom of the exhaust gap may be provided with a shielding plate, and in order to facilitate communication of one end of the exhaust duct 6 with the exhaust gap, one end of the exhaust duct 6 may be communicated to the exhaust gap in the first direction; and the other end of the exhaust pipe 6 can extend downwards along a third direction after being bent, so that the high-pressure gas in the battery cell 2 can be conveniently discharged from the bottom of the vehicle.
Optionally, one end of the exhaust pipeline 6 is provided with a waterproof ventilation valve; and/or the number of the groups of groups,
the other end of the exhaust pipeline 6 is provided with a waterproof ventilation valve.
Specifically, when the high-pressure gas in the battery core 2 is discharged to the outside through the exhaust channel 11, the exhaust gap and the exhaust pipe 6, the exhaust gap can be used as a buffer gap for discharging the high-pressure gas, so as to avoid abrupt pressure change during discharging the high-pressure gas. Since the exhaust pipe 6 is communicated with the external environment, one or more waterproof and breathable valves may be disposed on the exhaust pipe 6 in order to prevent impurities such as external air and liquid from reversely entering the battery cell 2 through the exhaust pipe 6. When the pressure in the exhaust gap is larger than the action threshold value of the waterproof ventilation valve, the waterproof ventilation valve in the exhaust pipeline 6 is opened, so that high-pressure gas in the battery cell 2 can be led out to the external environment, the internal and external air pressures of the battery pack are balanced, the internal environment temperature of the battery pack is reduced, and the risk of thermal runaway of the battery pack is avoided.
Optionally, referring to fig. 2, 3 and 7, the battery pack further includes a connection piece 3, where the connection piece 3 is disposed on a side of the insulating support plate 1 away from the battery cell 2;
the insulating support plate 1 is provided with a through hole 14, and the pole on the battery core 2 is electrically connected to the connecting sheet 3 through the through hole 14.
Specifically, the through holes 14 can respectively connect the electric core 2 and the connecting piece 3 arranged at two sides of the insulating support plate 1, so as to realize the aligned installation and fixation of the insulating support plate 1 to the electric core 2. And one connecting piece 3 can be correspondingly connected with the positive pole post in one cell group, or one connecting piece 3 can be correspondingly connected with the negative pole post in one cell group. The plurality of connection pieces 3 may be provided along the longitudinal direction of the battery pack, and the connection pieces may be connected to the poles of the same attribute and then led out to the distribution box. By separating the battery cell 2 from the connecting sheet 3 through the insulating support plate 1, the short circuit of the battery cell and the thermal runaway risk caused by arc discharge or unstable conductivity can be reduced, and the high-voltage insulation of the battery pack can be ensured. In addition, the pole of electric core 2 is towards insulating backup pad 1 and then makes spare parts such as connection piece set up and is close to one side of tray, and then can save the electric core and towards the partial space of one side of apron, and then can increase battery capacity and improve the energy density of battery package.
In addition, the thickness of the insulation support plate 1 may be set in the range of 6-10mm, for example, the thickness of the insulation support plate 1 is set to 8mm, so as to ensure that the insulation support plate 1 can achieve high voltage insulation of 151-300V.
Optionally, the battery pack further includes a sampling harness and a fixing structure 10, the sampling harness is disposed on the insulating support plate 1, referring to fig. 3, and the fixing structure 10 is disposed on a side of the connection piece 3 away from the insulating support plate 1 and is used for fixing the connection piece 3.
Specifically, the sampling wire harness can be embedded into the insulating support plate 1, so that integration of the sampling wire harness and the insulating support plate 1 is realized, and the setting stability of the sampling wire harness is ensured; the fixing structure 10 may be a structural adhesive layer, and the connecting sheet 3 may be placed in the structural adhesive layer to fix, so that the reliability of the arrangement of the connecting sheet 3 is ensured.
Specifically, the fixing structure 10 is a structural adhesive layer, a limiting groove 101 is provided on the structural adhesive layer, the connecting piece 3 includes a main connecting piece 31 and a plurality of sub connecting pieces 32, and the plurality of sub connecting pieces are connected to the same side of the main connecting piece;
the terminal post on the electric core 2 is electrically connected with the sub-connecting piece 32, and the main connecting piece 31 is limited in the limiting groove 101. The limiting groove 101 can limit the connecting sheet 3, so that the stability of the arrangement of the connecting sheet 3 is ensured.
Optionally, the battery pack further comprises a distribution box 7, and the distribution box 7 is electrically connected with the connecting sheet 3. The distribution box 7 can control the charge and discharge of the battery cell 2 through the connecting sheet 3, and can collect battery cell information on the connecting sheet 3 so as to ensure that the operation of the battery cell 2 is under proper temperature, current and voltage.
In addition, referring to fig. 2, the battery pack further includes a direct cooling direct heating plate 4, a refrigerant is introduced into the direct cooling direct heating plate 4, and the direct cooling direct heating plate 4 is covered on the plurality of battery cells 2, so as to ensure that heat generated by the battery cells 2 can be timely dissipated, and improve the thermal conductivity of the battery pack. And the total height of the battery pack formed by the direct-cooling direct-heating plate 4, the battery core 2 and the insulating support plate 1 is lower than 100mm, so that the structural size of the battery pack can be reduced on the basis of improving the integration level of the battery pack.
The embodiment of the application also provides a vehicle, which comprises the battery pack.
The battery pack may be used as a power battery of the vehicle to provide sufficient operating power to the vehicle. In the running process of the battery pack, when the pressure of high-pressure gas in the battery cell 2 reaches the threshold value of the action of the explosion-proof valve, the high-pressure gas in the battery cell 2 can jack the explosion-proof valve, so that the high-pressure gas in the battery cell 2 can be timely discharged out of the insulating support plate 1 through the air outlet 13 after passing through the air outlet channel 11, the internal and external pressures of the battery cell 2 in the battery pack are balanced, the purpose of reducing the internal temperature of the battery pack is achieved, the risk of thermal runaway of the battery pack is reduced, and the running safety of a vehicle is ensured.
Alternatively, referring to fig. 1 and 2, the vehicle includes a floor panel 100 and a frame girder 200, the frame girder 200 is disposed on the floor panel 100 and forms a receiving groove with the floor panel 100, and the battery pack is disposed in the receiving groove.
Specifically, the bottom plate 100 may be connected to the frame beam 200 by bolts, so that the frame beam 200 and the bottom plate 100 form a stable-structure receiving groove, and when the battery pack is disposed in the receiving groove, the battery pack may be fixed in the receiving groove by means of detachable connection or adhesion. In one embodiment, the insulating support plate 1 and the bottom plate 100 of the battery pack are filled with a pouring sealant, the pouring sealant can effectively fix the battery cell 2 and the insulating support plate 1 in the accommodating groove, and meanwhile, the pouring sealant can serve as a heat conducting material to achieve a good heat conducting effect on the battery pack.
Alternatively, the vehicle includes a skeleton beam 200, the skeleton beam 200 and the case are integrally formed and have a mounting cavity, and the battery cell 2 is disposed in the mounting cavity.
Specifically, the frame beam 200 and the box body are integrally formed, so that the battery pack and the vehicle can be prevented from being provided with independent frame structures respectively, the compactness and the structural safety of the vehicle structure are ensured, and meanwhile, the forming process of the vehicle is simplified. And when the electric core 2 is arranged in the mounting cavity, the electric core 2 can be stored and protected through an integrally formed structure, so that the use safety of the electric core 2 is ensured.
Alternatively, referring to fig. 4 and 5, the frame girder 200 includes a cross beam 201 disposed in a first direction and a side beam 202 disposed in a second direction;
the battery pack comprises a side plate 5 and an exhaust pipeline 6, wherein the side plate 5 is positioned on the side surface of the battery cell 2 and forms an exhaust gap with the cross beam 201, and the air outlet 13 is communicated with the exhaust gap;
at least part of the exhaust duct 6 is disposed in the side member 202, and one end of the exhaust duct 6 communicates with the exhaust gap, and the other end of the exhaust duct 6 communicates from the side member 202 to the outside.
Specifically, the cross beams 201 may extend along the width direction of the battery cell unit and be disposed at two opposite ends of the battery cell unit, and the cross beams 201 may extend along the length direction of the battery cell unit and be disposed at two opposite ends of the battery cell unit, so as to form protection on the periphery of the battery cell unit through the skeleton beam 200. The side plate 5 is located at the side of the battery cell 2 and can expose the air outlet 13 of the air exhaust channel 11, so that the air outlet 13 is communicated with the air exhaust gap.
And the exhaust duct 6 may be fixed to the side member 202, and one end of the exhaust duct 6 communicates with the exhaust gap, and the other end of the exhaust duct 6 communicates from the side member 202 to the outside. The communication between the other end of the exhaust duct 6 and the outside can be achieved by means of the feature that the lower part of the longitudinal beam 202 communicates with the outside of the vehicle, so that the external discharge of the high-pressure gas in the battery cell 2 can be achieved.
In addition, the cross beam 201 may include a front cross beam and a rear cross beam positioned at the front and rear of the battery cell, and the exhaust gap is formed between the side plate 5 and the rear cross beam; while the stringers 202 may include a left stringer and a right stringer on both sides of the cell unit, the exhaust duct 6 may be provided with two, and the two exhaust ducts 6 are integrated to the left stringer and the right stringer, respectively. When the battery cells 2 in the battery cell units discharge high-pressure gas, the flow direction of the high-pressure gas can flow from the front end of the battery pack to an exhaust gap between the rear cross beam of the battery pack and the side plate 5, and then the high-pressure gas is discharged to the external environment through the exhaust pipelines 6 integrated with the longitudinal beams on the two sides of the vehicle body.
Alternatively, referring to fig. 1 and 2, the battery pack includes a distribution box 7, the beam 201 includes a front beam near a vehicle head position and a rear beam near a vehicle tail position, the side plate 5 and the rear beam form the exhaust gap therebetween, and the distribution box 7 is disposed at a side of the rear beam away from the side plate 5 and electrically connected with the connection piece 3;
the other end of the exhaust duct 6 communicates from the bottom of the vehicle to the outside.
Specifically, when the battery cell 2 in the battery cell unit discharges high-pressure gas, the flow direction of the high-pressure gas can flow from the front end of the battery pack to the exhaust gap between the rear cross beam of the battery pack and the side plate 5, and finally the other end of the exhaust pipeline 6 is communicated with the outside from the bottom of the vehicle, so that the rear end of the battery pack is exhausted, and the influence of the exhaust on the vehicle and passengers in the vehicle is avoided.
In addition, referring to fig. 2, the vehicle further includes a buffering structure 8 and a shielding plate 9, the buffering structure 8 being disposed between the floor panel 100 and the battery pack to buffer impact to the battery pack when the vehicle vibrates; and the protection plate 9 is covered on the top of the battery pack to form comprehensive protection for the battery pack.
While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (15)
1. A battery pack, comprising:
the box body comprises a cover plate and a tray which are connected with each other, and the cover plate and the tray are enclosed together to form an accommodating space;
the insulation support plate (1) is arranged in the accommodating space and on the tray, an exhaust channel (11) is arranged in the insulation support plate (1), and the insulation support plate (1) is provided with an air inlet (12) and an air outlet (13) which are communicated with the exhaust channel (11);
the battery cells (2) are arranged in the accommodating space, explosion-proof valves are arranged on the battery cells (2), the battery cells (2) are arranged on the insulating support plate (1), and the explosion-proof valves on the battery cells (2) are arranged towards the insulating support plate, so that the explosion-proof valves are opposite to the air inlets (12);
under the condition that the explosion-proof valve is in an open state, high-pressure gas in the battery cell (2) passes through the exhaust channel (11) and then is discharged through the gas outlet (13).
2. The battery pack according to claim 1, wherein a plurality of the cells (2) form a plurality of cell groups arranged in a first direction, the cell groups including a plurality of cells (2) arranged side by side in a second direction, the second direction being perpendicular to the first direction;
a plurality of exhaust channels (11) extending along the second direction are arranged in the insulating support plate (1), and each cell group corresponds to one exhaust channel (11).
3. The battery pack according to claim 1, wherein the air inlet (12) is located on the insulating support plate (1) near the top surface of the cell (2), and the air outlet (13) is located on the insulating support plate (1) at a side surface adjacent to the top surface.
4. The battery pack according to claim 1, further comprising an air guide passage, which is located in the accommodation space, and one end of which communicates with an air outlet of the air discharge passage and the other end of which communicates with the outside of the case;
when the explosion-proof valve is in an open state, the gas in the battery cell (2) sequentially passes through the exhaust channel (11) and the gas guide channel and then is discharged out of the accommodating space.
5. The battery pack according to claim 4, wherein the battery pack comprises a side plate (5), the side plate (5) is attached to the battery cell (2) and separates an exhaust gap in the accommodating space, the exhaust gap is the air guide channel, and the air outlet (13) is communicated with the exhaust gap;
the side wall of the box body is also provided with an exhaust pipeline (6), one end of the exhaust pipeline (6) is communicated with the exhaust gap, and the other end of the exhaust pipeline (6) is communicated to the outside of the battery pack.
6. The battery pack according to claim 5, wherein one end of the exhaust duct (6) extends in a first direction, and the other end of the exhaust duct (6) is bent to extend in a third direction perpendicular to a plane formed by the second direction and the first direction.
7. The battery pack according to claim 5, wherein one end of the exhaust duct (6) is provided with a waterproof ventilation valve; and/or the number of the groups of groups,
the other end of the exhaust pipeline (6) is provided with a waterproof ventilation valve.
8. The battery pack according to claim 1, further comprising a connecting piece (3), the connecting piece (3) being provided at a side of the insulating support plate (1) remote from the battery cell (2);
the insulation support plate (1) is provided with a through hole (14), and the pole on the battery core (2) is electrically connected to the connecting sheet (3) through the through hole (14).
9. The battery pack according to claim 8, further comprising a sampling harness and a fixing structure (10), the sampling harness being provided on the insulating support plate (1), the fixing structure (10) being provided on a side of the connecting piece (3) remote from the insulating support plate (1) and being used for fixing the connecting piece (3).
10. The battery pack according to claim 9, wherein the fixing structure (10) is a structural adhesive layer, a limiting groove (101) is formed in the structural adhesive layer, the connecting sheet (3) comprises a main connecting sheet (31) and a plurality of sub connecting sheets (32), and the sub connecting sheets are connected to the same side of the main connecting sheet;
the electrode posts on the battery core (2) are electrically connected with the sub-connecting pieces (32), and the main connecting pieces (31) are limited in the limiting grooves (101).
11. A vehicle comprising the battery pack of any one of claims 1-10.
12. The vehicle of claim 11, characterized in that the vehicle comprises a floor (100) and a skeletal beam (200), the skeletal beam (200) being disposed on the floor (100) and forming a receiving slot with the floor (100), the battery pack being disposed in the receiving slot.
13. The vehicle according to claim 11, characterized in that the vehicle comprises a skeleton beam (200), the skeleton beam (200) and the box being integrally formed and having a mounting cavity, the battery cell (2) being arranged in the mounting cavity.
14. The vehicle of claim 12, characterized in that the skeletal beam (200) comprises a cross beam (201) arranged in a first direction and a longitudinal beam (202) arranged in a second direction;
the battery pack comprises a side plate (5) and an exhaust pipeline (6), wherein the side plate (5) is positioned on the side surface of the battery cell (2) and forms an exhaust gap with the cross beam (201), and the air outlet (13) is communicated with the exhaust gap;
at least part of the exhaust pipeline (6) is arranged in the longitudinal beam (202), one end of the exhaust pipeline (6) is communicated with the exhaust gap, and the other end of the exhaust pipeline (6) is communicated with the outside from the longitudinal beam (202).
15. The vehicle according to claim 14, characterized in that the battery pack comprises an electric box (7), the cross member (201) comprises a front cross member near a vehicle head position and a rear cross member near a vehicle tail position, the side plate (5) and the rear cross member form the exhaust gap therebetween, and the electric box (7) is disposed on a side of the rear cross member away from the side plate (5) and electrically connected with the connecting piece (3);
the other end of the exhaust pipeline (6) is communicated with the outside from the bottom of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222651801.7U CN218997005U (en) | 2022-09-30 | 2022-09-30 | Battery pack and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222651801.7U CN218997005U (en) | 2022-09-30 | 2022-09-30 | Battery pack and vehicle |
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| Publication Number | Publication Date |
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| CN218997005U true CN218997005U (en) | 2023-05-09 |
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| CN202222651801.7U Active CN218997005U (en) | 2022-09-30 | 2022-09-30 | Battery pack and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246922A1 (en) * | 2022-06-23 | 2023-12-28 | 比亚迪股份有限公司 | Battery pack and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246922A1 (en) * | 2022-06-23 | 2023-12-28 | 比亚迪股份有限公司 | Battery pack and vehicle |
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