Shell of vehicle-mounted starting power supply, vehicle-mounted starting power supply and vehicle

Abstract

The utility model discloses a shell of a vehicle-mounted starting power supply, the vehicle-mounted starting power supply and a vehicle, a battery cell mounting cavity and an exhaust passage communicated with the battery cell mounting cavity are arranged in the shell of the vehicle-mounted starting power supply, an outward exhaust hole communicated with the exhaust passage is arranged on the shell, and a battery cell is mounted in the battery cell mounting cavity. According to the shell of the vehicle-mounted starting power supply, the exhaust channel communicated with the battery cell mounting cavity and the outward exhaust hole communicated with the exhaust channel are arranged, when the battery cell is damaged and releases gas, the exhaust channel guides expansion gas to flow, and the expansion gas is released through the outward exhaust hole in the shell, so that the pressure is quickly released, and the safety of the vehicle-mounted starting power supply is improved. The high-voltage environment in the vehicle-mounted starting power supply is damaged, the explosion risk of the vehicle-mounted starting power supply can be reduced, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a housing of a vehicle starting power supply, a vehicle starting power supply and a vehicle. Background Art

[0002] For current vehicle starting power supplies, with the iterative update of technology, some problems that did not exist before will gradually emerge.

[0003] For example, according to the types of batteries, the most widely used ones are lead-acid batteries and lithium-ion batteries. Lead-acid batteries are widely used as backup power sources for automobiles because of their mature technology and low price. However, because they contain heavy metal elements such as lead, and with the gradual improvement of environmental protection awareness, lithium-ion batteries that are pollution-free and have excellent comprehensive performance are gradually favored by the public. Using lithium-ion batteries as vehicle backup power sources has become an industry trend. The chemical property of lithium element is active, so the safety of lithium-ion batteries has attracted much attention. Lithium batteries will generate a large amount of gas and even catch fire and explode when damaged in extreme cases, which has potential safety hazards. When lithium-ion batteries are used as vehicle starting power supplies, how to improve their safety is one of the problems that need to be overcome. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a housing of a vehicle starting power supply and a vehicle starting power supply. The housing of the vehicle starting power supply can direct the discharge of gas when the battery cells are damaged and generate a large amount of gas, reduce the risk of explosion of the vehicle starting power supply, and improve the safety in use.

[0005] Another object of the utility model is to provide a vehicle including the above vehicle starting power supply.

[0006] According to the housing of the vehicle starting power supply in the embodiment of the utility model, a battery cell installation cavity and an exhaust passage communicating with the battery cell installation cavity are arranged in the housing, and an external exhaust hole communicating with the exhaust passage is arranged on the housing.

[0007] According to the housing of the vehicle starting power supply in the embodiment of the utility model, by arranging an exhaust passage communicating with the battery cell installation cavity and an external exhaust hole communicating with the exhaust passage, when the battery cells are damaged and release gas, the exhaust passage guides the flow of the expanding gas, and the expanding gas is released through the external exhaust hole on the housing, quickly relieving pressure and discharging gas in a directed manner. Destroying the high-pressure environment inside the vehicle starting power supply can reduce the risk of explosion of the vehicle starting power supply and improve the safety in use.

[0008] In some embodiments, there are at least two battery cell installation cavities; the exhaust passage includes: a first passage, and the first passage communicates with two adjacent battery cell installation cavities.

[0009] In some embodiments, the first channel is a long strip extending along the height direction of the battery cell mounting cavity.

[0010] In some embodiments, two adjacent battery cell mounting cavities are arranged in parallel, a part of the housing located between the two adjacent battery cell mounting cavities is a partition wall, the first channel penetrates along the thickness direction of the partition wall and is located at the minimum wall thickness of the partition wall.

[0011] In some embodiments, the exhaust channel includes: a second channel, one end of the second channel communicates with the external exhaust hole, and the other end communicates with at least one of the battery cell mounting cavities.

[0012] In some embodiments, the housing includes: a bottom wall of the housing; a side wall of the housing, the side wall of the housing is annular and connected to the edge of the bottom wall of the housing; a mounting frame, the mounting frame is arranged on the bottom wall of the housing, the mounting frame encloses the battery cell mounting cavity inside, the battery cell mounting cavity is open on the side away from the bottom wall of the housing for assembling the battery cell; a side bracket, the side bracket is arranged on the bottom wall of the housing, the side bracket is located on one side of the mounting frame, and the side bracket is used to enclose the second channel.

[0013] In some embodiments, the second channel includes: a buffer cavity and an extension channel, the external exhaust hole is arranged on the side wall of the housing; the side bracket includes: a side plate, the side plate is connected to the side wall of the housing, and the buffer cavity is enclosed between the side plate and the side wall of the housing, and the buffer cavity communicates with the external exhaust hole; an extension plate, one end of the extension plate is connected to the side plate and the other end is adjacent to or abuts against the mounting frame, and the extension channel is enclosed between the extension plate and the bottom wall of the housing, and one end of the extension channel communicates with the buffer cavity; a release hole is arranged on the mounting frame corresponding to the other end of the extension channel, and the release hole communicates with the adjacent battery cell mounting cavity.

[0014] In some embodiments, a positioning portion is arranged on the bottom wall of the housing and / or the mounting frame, and the extension plate cooperates with the positioning portion.

[0015] In some embodiments, the positioning portion is arranged on the bottom wall of the housing and includes positioning strips arranged on opposite sides of the release hole, and the two positioning strips abut against the extension plate.

[0016] In some embodiments, at least two of the bottom wall of the housing, the side wall of the housing, and the mounting frame are integrally formed parts.

[0017] In some embodiments, the housing further includes: a cell pressing plate located at an end of the mounting frame away from the bottom wall of the housing, the cell pressing plate being connected to at least one of the side wall of the housing and the mounting frame, and the cell pressing plate being provided with an opening; an upper cover disposed opposite to the bottom wall of the housing and connected to the side wall of the housing; the vehicle-mounted starting power supply further includes a connecting member, one end of the connecting member is electrically connected to the cell through the opening, and the other end extends to the upper cover.

[0018] In some embodiments, the exhaust passage further includes: a gas collecting cavity located at one end of the cell installation cavity.

[0019] In some embodiments, a stepped surface is formed between the gas collecting cavity and the cell installation cavity for abutting against one end of the cell.

[0020] The vehicle-mounted starting power supply according to an embodiment of the present invention includes: the housing and the cell of the above vehicle-mounted starting power supply, and the cell is installed in the cell installation cavity.

[0021] The vehicle-mounted starting power supply according to an embodiment of the present invention, by providing an exhaust passage communicating with the cell installation cavity on the housing and an external exhaust hole communicating with the exhaust passage, when the cell is damaged and releases gas, the exhaust passage guides the expansion gas to flow, and releases the expansion gas through the external exhaust hole on the housing, quickly relieving pressure and discharging gas in a directional manner. Destroying the high-pressure environment inside the vehicle-mounted starting power supply can reduce the risk of explosion of the vehicle-mounted starting power supply and improve the use safety.

[0022] The vehicle according to an embodiment of the present invention includes the vehicle-mounted starting power supply according to any one of the above.

[0023] The vehicle according to an embodiment of the present invention can improve the driving safety of the vehicle by providing the above vehicle-mounted starting power supply.

[0024] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0026] Figure 1 is an exploded view of the structure of a vehicle-mounted starting power supply according to some embodiments of the present invention;

[0027] Figure 2 is a partial structural schematic diagram of the housing of a vehicle-mounted starting power supply according to some embodiments of the present invention;

[0028] Figure 3 Schematic structural diagram of a side bracket of a vehicle-mounted starting power supply according to some embodiments of the present utility model;

[0029] Figure 4 Partial schematic structural diagram of a vehicle-mounted starting power supply according to some embodiments of the present utility model;

[0030] Figure 5 Cross-sectional view of a vehicle-mounted starting power supply according to some embodiments of the present utility model;

[0031] Figure 6 Another cross-sectional view of a vehicle-mounted starting power supply according to some embodiments of the present utility model.

[0032] Reference numerals:

[0033] Vehicle-mounted starting power supply 100;

[0034] Housing 1; battery cell installation cavity 11; first battery cell installation cavity 111; second battery cell installation cavity 112; third battery cell installation cavity 113; fourth battery cell installation cavity 114; fifth battery cell installation cavity 115; sixth battery cell installation cavity 116; seventh battery cell installation cavity 117; eighth battery cell installation cavity 118; exhaust passage 12; first passage 121; second passage 122; buffer cavity 1221; extension passage 1222; gas collecting cavity 123; stepped surface 1231; external exhaust hole 13; bottom wall of the housing 14; positioning portion 141; positioning strip 1411; side wall of the housing 15; mounting bracket 16; release hole 161; partition wall 162; side bracket 17; side plate 171; extension plate 172; battery cell pressing plate 18; opening 181; upper cover 19;

[0035] Battery cell 2;

[0036] Connecting member 3. Detailed implementation manners

[0037] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "height", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0039] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] Next, reference is made to Figures 1 - 6 Describe the housing 1 of the vehicle-mounted starting power supply 100 according to an embodiment of the present utility model and the vehicle-mounted starting power supply 100 having the same.

[0041] As Figure 1 and Figure 2 shown, the vehicle-mounted starting power supply 100 according to an embodiment of the present utility model includes: a housing 1 and an electric core 2. An electric core installation cavity 11 is provided inside the housing 1, and the electric core 2 is installed in the electric core installation cavity 11. The housing 1 is the main body of the vehicle-mounted starting power supply 100, and the electric core 2 is installed inside the housing 1. The housing 1 plays a role in protecting and supporting the electric core 2.

[0042] In the related art, when the electric core 2 is damaged in extreme cases, a large amount of gas will be generated, which will cause the expansion gas to accumulate inside the vehicle-mounted starting power supply 100. When the internal pressure of the vehicle-mounted starting power supply 100 is too high, there is even a risk of fire and explosion.

[0043] To solve the above problems, the housing 1 of the vehicle-mounted starting power supply 100 of the present application has been structurally improved for directional exhaust, greatly improving the safety of using the vehicle-mounted starting power supply 100. In the housing 1 of the vehicle-mounted starting power supply 100 according to the embodiment of the present invention, an exhaust passage 12 communicating with the battery cell installation cavity 11 is further provided in the housing 1, and an external exhaust hole 13 communicating with the exhaust passage 12 is provided on the housing 1. When the battery cell 2 is damaged and releases gas, the exhaust passage 12 guides the expansion gas to flow and releases the expansion gas through the external exhaust hole 13 on the housing 1, destroying the high-pressure environment inside the vehicle-mounted starting power supply 100, reducing the risk of explosion of the vehicle-mounted starting power supply 100, and improving the safety of use.

[0044] In addition, by providing the external exhaust hole 13 on the housing 1, directional exhaust pressure relief can be achieved, thus avoiding other components and further improving the safety of use.

[0045] In the housing 1 of the vehicle-mounted starting power supply 100 according to the embodiment of the present invention, by providing the exhaust passage 12 communicating with the battery cell installation cavity 11 and the external exhaust hole 13 communicating with the exhaust passage 12, when the battery cell 2 is damaged and releases gas, the exhaust passage 12 guides the expansion gas to flow and releases the expansion gas through the external exhaust hole 13 on the housing 1, quickly relieving pressure, destroying the high-pressure environment inside the vehicle-mounted starting power supply 100, reducing the risk of explosion of the vehicle-mounted starting power supply 100, and improving the safety of use.

[0046] In some embodiments of the present invention, as Figure 2 and Figure 4 shown, the battery cell installation cavity 11 is at least two, and at least one battery cell 2 is installed in each battery cell installation cavity 11.

[0047] Optionally, as Figure 2 and Figure 4 shown, the battery cell installation cavity 11 is multiple, and one battery cell 2 is installed in each battery cell installation cavity 11, and the battery cells 2 are installed in the battery cell installation cavities 11 in one-to-one correspondence. By installing the battery cells 2 in the battery cell installation cavities 11 in one-to-one correspondence, the mutual interference between the battery cells 2 is reduced, and the working stability of the battery cells 2 is improved.

[0048] Optionally, the battery cell installation cavity 11 is multiple, and two battery cells 2 are installed in each battery cell installation cavity 11, so as to save the number of battery cell installation cavities 11, facilitate the arrangement of the battery cells 2, and is beneficial to reducing the volume of the vehicle-mounted starting power supply 100.

[0049] It should be noted that the installation of two battery cells 2 in each of the above battery cell installation cavities 11 is for the purpose of illustration, but it is obvious that this solution can be applied to the technical solutions in which three or more battery cells 2 are installed in each battery cell installation cavity 11, and this also falls within the protection scope of the present invention.

[0050] Optionally, there are multiple battery cell installation cavities 11, and one or more battery cells 2 are installed in the battery cell installation cavities 11. The number of battery cells 2 in the battery cell installation cavities 11 may be the same or different.

[0051] In some embodiments of the present utility model, as Figure 1 and Figure 2 shown, the exhaust passage 12 includes: a first passage 121, and the first passage 121 communicates with two adjacent battery cell installation cavities 11. The first passage 121 connects two adjacent battery cell installation cavities 11 into a space where gases can flow into each other. It can be understood that there are at least two battery cell installation cavities 11, and the first passage 121 is connected between every two adjacent battery cell installation cavities 11. By providing the first passage 121, all the battery cell installation cavities 11 can be connected into a communicating space where gases can flow into each other.

[0052] When the battery cell 2 in any one of the multiple battery cell installation cavities 11 is damaged and releases gas, the expanding gas can flow along the first passage 121 into the adjacent battery cell installation cavity 11, and continue to flow along the first passage 121 to the adjacent battery cell installation cavity 11, and finally discharge from the external exhaust hole 13.

[0053] By providing a communicating first passage 121 between two adjacent battery cell installation cavities 11, only one external exhaust hole 13 is required to meet the exhaust and pressure relief requirements, and it is not necessary to provide multiple external exhaust holes 13 on the housing 1 corresponding to each battery cell installation cavity 11, which can reduce the manufacturing difficulty of the vehicle-mounted starting power supply 100 and is beneficial to improving the structural strength of the housing 1 of the vehicle-mounted starting power supply 100.

[0054] In some embodiments of the present utility model, as Figure 2 shown, the first passage 121 is a long strip extending along the height direction of the battery cell installation cavity 11. The length of the first passage 121 is consistent with the height direction of the battery cell installation cavity 11, which can increase the cross-sectional area of the first passage 121, and the space for gas flow in the first passage 121 is relatively large.

[0055] By providing the first passage 121 extending along the height direction of the battery cell installation cavity 11, when the battery cell 2 in any one of the multiple battery cell installation cavities 11 is damaged and releases gas, the expanding gas can quickly flow into the adjacent battery cell installation cavity 11 through the first passage 121, improving the gas flow speed, increasing the pressure relief efficiency, and enhancing the use safety.

[0056] In some embodiments of the present utility model, as Figure 2As shown, two adjacent battery cell installation cavities 11 are arranged in parallel. The part of the housing 1 located between two adjacent battery cell installation cavities 11 is a partition wall 162. The first channel 121 is arranged through the partition wall 162 in the thickness direction thereof and is located at the minimum wall thickness of the partition wall 162.

[0057] That is to say, the first channel 121 is arranged at the thinnest part of the partition wall 162, which can reduce the size of the gas flow direction in the first channel 121 and accelerate the speed of gas flowing to the adjacent battery cell installation cavities 11. Thus, the gas flow speed can be increased, the pressure relief efficiency can be improved, the risk of explosion of the vehicle-mounted starting power supply 100 can be reduced, and the use safety can be enhanced. Moreover, after the first channel 121 is formed here, the size is small, and the overall wall thickness of the partition wall 162 is still large, which is beneficial to the overall structural strength of the housing 1.

[0058] In some embodiments of the present invention, as Figure 2 shown, multiple battery cell installation cavities 11 are all arranged in parallel, and the multiple battery cell installation cavities 11 are arranged in an array, which can reduce the space required for the battery cell installation cavities 11 and is beneficial to reducing the volume of the vehicle-mounted starting power supply 100.

[0059] In some embodiments of the present invention, the exhaust channel 12 includes: a second channel 122, one end of the second channel 122 communicates with the external exhaust hole 13, and the other end communicates with at least one battery cell installation cavity 11.

[0060] The second channel 122 is a flow channel for the expanding gas to flow from the battery cell installation cavity 11 to the external exhaust hole 13. When the battery cell 2 in the battery cell installation cavity 11 is damaged and releases gas, the expanding gas is discharged from the vehicle-mounted starting power supply 100 through the second channel 122, and the pressure is relieved to reduce the risk of explosion of the vehicle-mounted starting power supply 100.

[0061] By providing the second channel 122 and the external exhaust hole 13, the gas can be discharged in a directional manner, thereby avoiding other components and further enhancing the use safety.

[0062] In some embodiments of the present invention, the exhaust channel 12 includes the first channel 121 and the second channel 122. The first channel 121 communicates with two adjacent battery cell installation cavities 11. One end of the second channel 122 communicates with the external exhaust hole 13, and the other end communicates with at least one battery cell installation cavity 11.

[0063] The second channel 122 is a flow channel for the expanding gas to flow from the battery cell installation cavity 11 to the external exhaust hole 13. When the battery cell 2 in any one of the multiple battery cell installation cavities 11 is damaged and releases gas, the expanding gas can flow through the first channel 121 into the adjacent battery cell installation cavity 11, and continue to flow along the first channel 121 to the adjacent battery cell installation cavity 11, and finally be discharged from the external exhaust hole 13 through the second channel 122.

[0064] Optionally, one end of the second channel 122 communicates with the external exhaust hole 13, and the other end of the second channel 122 communicates with a battery cell installation cavity 11.

[0065] The first channel 121 communicates with two adjacent battery cell installation cavities 11. By arranging the first channel 121, all the battery cell installation cavities 11 are connected into a communicating space where gas can flow mutually, while the second channel 122 only communicates one battery cell installation cavity 11 with the external exhaust hole 13. When the battery cell 2 in any one of the multiple battery cell installation cavities 11 is damaged and releases gas, it will finally flow into the battery cell installation cavity 11 communicating with the second channel 122 under the guidance of the first channel 121 and then be discharged from the external exhaust hole 13.

[0066] This design method is beneficial to the arrangement of the second channel 122. The second channel 122 only needs to communicate with one battery cell installation cavity 11, which is beneficial to saving manufacturing costs, reducing the space occupied by the vehicle-mounted starting power supply 100, and reducing the volume of the vehicle-mounted starting power supply 100.

[0067] Optionally, one end of the second channel 122 communicates with the external exhaust hole 13, and the other end of the second channel 122 communicates with multiple battery cell installation cavities 11.

[0068] When the battery cell 2 in any one of the multiple battery cell installation cavities 11 is damaged and releases gas, if this battery cell installation cavity 11 communicates with the second channel 122, the expanded gas can be directly discharged from the external exhaust hole 13 through the second channel 122; if this battery cell installation cavity 11 does not communicate with the second channel 122, it will be guided by the first channel 121 to the battery cell installation cavity 11 communicating with the second channel 122 and then be discharged from the external exhaust hole 13.

[0069] This design method is beneficial to accelerating the discharge of the expanded gas. The expanded gas can quickly flow into the battery cell installation cavity 11 communicating with the second channel 122 under the guidance of the first channel 121, increasing the pressure relief efficiency, reducing the risk of explosion of the vehicle-mounted starting power supply 100, and improving the use safety.

[0070] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the housing 1 includes: a housing bottom wall 14, a housing side wall 15, a mounting bracket 16, and a side bracket 17. The housing side wall 15 is annular and connected to the edge of the housing bottom wall 14. The housing bottom wall 14 and the housing side wall 15 are the outer contour members of the housing 1. The housing bottom wall 14 is located at the bottom of the housing 1, the housing side wall 15 is located above the housing bottom wall 14, and both the mounting bracket 16 and the side bracket 17 are located above the housing bottom wall 14.

[0071] The mounting bracket 16 is provided on the bottom wall 14 of the housing. An electric cell mounting cavity 11 is defined inside the mounting bracket 16. The electric cell mounting cavity 11 is open on the side away from the bottom wall 14 of the housing and is used for assembling the electric cell 2. The height direction of the electric cell mounting cavity 11 is the up-down direction. The upper end of the electric cell mounting cavity 11 is open, and the electric cell 2 is assembled into the electric cell mounting cavity 11 from top to bottom.

[0072] The side bracket 17 is provided on the bottom wall 14 of the housing. The side bracket 17 is located on one side of the mounting bracket 16, and the side bracket 17 is used to define the second channel 122.

[0073] It should be noted that the above up-down direction is based on the coordinate system when the vehicle-mounted starting power supply 100 shown in the attached Figure 1 figure is working normally, rather than indicating or implying that the indicated device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0074] In some embodiments of the present utility model, the bottom of the electric cell 2 is fixedly adhered in the electric cell mounting cavity 11 of the mounting bracket 16 to improve the mounting stability of the electric cell 2.

[0075] In some embodiments of the present utility model, the exhaust channel 12 includes a first channel 121. The mounting bracket 16 is provided with the first channel 121 between two adjacent electric cell mounting cavities 11, and the first channel 121 communicates the two adjacent electric cell mounting cavities 11.

[0076] In some embodiments of the present utility model, as Figure 4 shown, the external exhaust hole 13 is provided on the side wall 15 of the housing. The side bracket 17 is connected between the mounting bracket 16 and the side wall 15 of the housing so that the second channel 122 communicates the electric cell mounting cavity 11 and the external exhaust hole 13.

[0077] The second channel 122 includes a buffer cavity 1221 and an extension channel 1222 that communicate with each other. The extension channel 1222 communicates with the electric cell mounting cavity 11, and the buffer cavity 1221 communicates with the external exhaust hole 13. The length of the extension channel 1222 is longer than that of the buffer cavity 1221. The extension channel 1222 diverts the gas in the electric cell mounting cavity 11 to the external exhaust hole 13. The cross-sectional area of the buffer cavity 1221 is larger than that of the extension channel 1222. After the air flow flows into the buffer cavity 1221, it then flows out from the external exhaust hole 13. By providing the buffer cavity 1221, it is beneficial to the air flow to flow from the electric cell mounting cavity 11 to the external exhaust hole 13, improving the exhaust pressure relief efficiency.

[0078] As Figure 3As shown, the side bracket 17 includes: a side plate 171 and an extension plate 172. The side plate 171 is connected to the side wall 15 of the housing, and a buffer cavity 1221 is defined between the side plate 171 and the side wall 15 of the housing. One end of the extension plate 172 is connected to the side plate 171, and the other end is adjacent to or abuts against the mounting bracket 16. An extension channel 1222 is defined between the extension plate 172 and the bottom wall 14 of the housing.

[0079] A release hole 161 is provided on the mounting bracket 16 corresponding to the other end of the extension channel 1222. The release hole 161 communicates with the adjacent battery cell mounting cavity 11. One end of the extension channel 1222 communicates with the buffer cavity 1221, and the other end of the extension channel 1222 communicates with the release hole 161. When the battery cell 2 in the battery cell mounting cavity 11 is damaged and releases gas, the expanding gas flows out through the release hole 161, flows through the extension channel 1222 to the buffer cavity 1221, and finally is discharged from the external exhaust hole 13 of the vehicle-mounted starting power supply 100.

[0080] In some embodiments of the present invention, as Figure 2 shown, a positioning portion 141 is provided on the bottom wall 14 of the housing and / or the mounting bracket 16, and the extension plate 172 cooperates with the positioning portion 141. By providing the positioning portion 141, the installation accuracy of the extension plate 172 can be improved, facilitating the assembly of the side bracket 17.

[0081] Optionally, the positioning portion 141 is only provided on the bottom wall 14 of the housing; or, optionally, the positioning portion 141 is only provided on the mounting bracket 16; or, alternatively, the positioning portion 141 is provided on both the bottom wall 14 of the housing and the mounting bracket 16; or, further optionally, the positioning portion 141 is connected to both the bottom wall 14 of the housing and the mounting bracket 16 at the same time.

[0082] In some embodiments of the present invention, as Figure 2 shown, the positioning portion 141 is provided on the bottom wall 14 of the housing, and the positioning portion 141 includes positioning strips 1411 provided on opposite sides of the release hole 161. The two positioning strips 1411 abut against the extension plate 172 to position the extension portion, which can improve the installation accuracy of the extension plate 172 and facilitate the assembly of the side bracket 17.

[0083] In some embodiments of the present invention, at least two of the bottom wall 14 of the housing, the side wall 15 of the housing, and the mounting bracket 16 are integrally formed parts, which can improve the integrity of the housing 1 and is beneficial to improving the sealing performance and structural reliability of the housing 1.

[0084] Specifically, the mounting bracket 16 is used to mount the battery cell 2. When gas is generated inside the battery cell 2 and flows outwards, it will impact the inner wall of the battery cell mounting cavity 11. Although the gas will eventually be discharged from the external exhaust hole 13 through the exhaust passage 12, it will still impact the inside of the housing 1 before being discharged.

[0085] In particular, in some solutions, the explosion-proof valve of the battery cell 2 is provided at the bottom, and the gas generated by the battery cell 2 is likely to eject towards the bottom wall 14 of the shell, forming a downward impact force. Integrally molding the bottom wall 14 of the shell and the mounting bracket 16 can fix the bottom wall 14 of the shell and the mounting bracket 16 firmly, preventing the mounting bracket 16 from being jacked up upward under the reaction of the gas impact, thereby avoiding the mounting bracket 16 from jolting the battery cell 2 up and down and reducing the wear on the battery cell 2.

[0086] There is at least one battery cell mounting cavity 11 in the mounting bracket 16. When the inner wall of the battery cell mounting cavity 11 is impacted by gas, the space at the impacted place becomes larger, and the space at the non-impacted place becomes smaller, resulting in squeezing the surface of the battery cell 2. Therefore, integrally molding the side wall 15 of the shell and the mounting bracket 16 strengthens the supporting effect of the side wall 15 of the shell on the mounting bracket 16, making the mounting bracket 16 not easily deformed when impacted by the internal gas, and thus reducing the squeezing wear on the battery cell 2.

[0087] When integrally molding the bottom wall 14 of the shell and the side wall 15 of the shell, there can be no seam between the two, which is conducive to the gas inside the shell 1 finally discharging outward through the external exhaust hole 13 to achieve directional exhaust. Moreover, after the two are fixed as a whole, the overall structural strength increases, the protective and supporting effect on the mounting bracket 16 is strengthened, and it is also beneficial to reduce the wear of the battery cell 2.

[0088] In some embodiments of the present utility model, as Figure 1 shown, the bottom wall 14 of the shell, the side wall 15 of the shell and the mounting bracket 16 are integrally formed parts, and the bottom wall 14 of the shell, the side wall 15 of the shell and the mounting bracket 16 together form the lower shell of the shell 1. The situation where the expansion gas generated by the battery cell 2 leaks from the connection between the bottom wall 14 of the shell, the side wall 15 of the shell or the mounting bracket 16 is reduced, improving the use safety of the vehicle-mounted starting power supply 100.

[0089] In some embodiments of the present utility model, as Figure 1 shown, the shell 1 further includes: a battery cell pressing plate 18, the battery cell pressing plate 18 is located at one end of the mounting bracket 16 away from the bottom wall 14 of the shell, the battery cell pressing plate 18 is connected to at least one of the side wall 15 of the shell and the mounting bracket 16, and an opening 181 is provided on the battery cell pressing plate 18. The battery cell pressing plate 18 presses the battery cell 2 towards the bottom wall 14 of the shell in the mounting bracket 16, improving the mounting stability of the battery cell 2.

[0090] In some embodiments of the present utility model, the battery cell pressing plate 18 is fixedly connected to the side wall 15 of the shell or the mounting bracket 16 through a bolt fastener.

[0091] In some embodiments, as Figure 1As shown, the housing 1 further includes: an upper cover 19, which is arranged opposite to the housing bottom wall 14 and connected to the housing side wall 15. The upper cover 19 is also an outer contour member of the housing 1, and the upper cover 19 is located above the housing side wall 15. The upper cover 19, the housing bottom wall 14 and the housing side wall 15 together form an installation space for accommodating the mounting frame 16 and other components.

[0092] In some embodiments of the present invention, the upper cover 19 and the shell side wall 15 are welded to improve the airtightness inside the vehicle starting power supply 100 and reduce the leakage of the expansion gas generated by the battery cell 2 from the connection between the shell side wall 15 and the upper cover 19.

[0093] In some embodiments of the present invention, Figure 1 As shown, the vehicle-mounted starting power supply 100 further includes a connector 3, one end of which is electrically connected to the battery cell 2 through the opening 181, and the other end of which extends to the upper cover 19. In some embodiments, the connector 3 is connected to the battery cell 2 by welding.

[0094] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the exhaust channel 12 further includes: a gas collecting cavity 123 located at one end of the battery cell installation cavity 11 , and there are multiple gas collecting cavities 123 which are arranged in a one-to-one correspondence with the battery cell installation cavities 11 .

[0095] It is understandable that the battery cell installation cavity 11 is used to accommodate the battery cell 2. In the related art, the space of the battery cell installation cavity 11 is relatively small and fits closely with the battery cell 2. When the battery cell 2 is damaged and releases gas, since the space of the battery cell installation cavity 11 is relatively small, even if there is an exhaust channel 12 to discharge the expanded gas, it takes a certain amount of time, and a large amount of expanded gas will gather in the battery cell installation cavity 11, resulting in poor safety.

[0096] Therefore, the vehicle-mounted starting power supply 100 of the embodiment of the utility model is provided with a gas collecting chamber 123 at one end of the battery cell installation chamber 11, and the gas collecting chamber 123 is used to contain the gas generated by the battery cell 2 when it loses control. By providing the gas collecting chamber 123, the space that the battery cell installation chamber 11 can contain gas is increased, and the gas released by the damaged battery cell 2 flows into the battery cell installation chamber 11 and the gas collecting chamber 123, which effectively reduces the gas pressure in the battery cell installation chamber 11, can buffer the discharge of the expanded gas, and can improve the safety of use.

[0097] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, a step surface 1231 is formed between the gas collecting cavity 123 and the battery cell installation cavity 11 , and one end of the battery cell 2 abuts against the step surface 1231 .

[0098] The battery cell 2 is supported by the step surface 1231 to be installed in the battery cell installation cavity 11. The step surface 1231 separates a space at one end of the battery cell 2 close to the step surface 1231 to form a gas collection cavity 123 for accommodating the gas generated by the out-of-control of the battery cell 2.

[0099] In some embodiments of the present utility model, the housing 1 includes a housing bottom wall 14, a housing side wall 15 and a mounting bracket 16. The housing bottom wall 14 is located below the housing side wall 15. The housing side wall 15 is annular and connected to the edge of the housing bottom wall 14. The mounting bracket 16 is provided on the housing bottom wall 14, and a battery cell installation cavity 11 is defined inside the mounting bracket 16.

[0100] The gas collection cavity 123 is located below the battery cell installation cavity 11. A step surface 1231 extending towards the inside of the battery cell installation cavity 11 is provided at the bottom of the mounting bracket 16. The mounting bracket 16 and the housing bottom wall 14 jointly define the gas collection cavity 123.

[0101] In some embodiments of the present utility model, the housing bottom wall 14, the housing side wall 15 and the mounting bracket 16 are integrally formed. By jointly defining the gas collection cavity 123 by the mounting bracket 16 and the housing bottom wall 14, it is beneficial to improve the airtightness of the gas collection cavity 123 and reduce the occurrence of leakage of the expansion gas generated by the battery cell 2 into the gas collection cavity 123.

[0102] In some embodiments of the present utility model, the exhaust passage 12 includes a first passage 121. The mounting bracket 16 is provided with a first passage 121 between two adjacent battery cell installation cavities 11. The first passage 121 not only communicates with two adjacent battery cell installation cavities 11, but also communicates with two adjacent gas collection cavities 123.

[0103] In some embodiments of the present utility model, an explosion-proof valve is provided on the battery cell 2, and the explosion-proof valve is arranged towards the gas collection cavity 123.

[0104] When the pressure in the battery cell 2 rises sharply due to reasons such as overcharging, overheating, internal or external short circuit, etc., the explosion-proof valve can be opened in time to release the internal pressure and prevent the battery from exploding. The explosion-proof valve is arranged towards the gas collection cavity 123, and the explosion-proof valve can direct the gas inside the battery cell 2 towards the gas collection cavity 123 for discharge.

[0105] In some embodiments of the present utility model, such as Figure 2 and Figure 4 as shown, the battery cell 2 is a cylindrical battery cell 2. Correspondingly, the battery cell installation cavity 11 is also a cylindrical cavity. A plurality of battery cell installation cavities 11 are arranged in an array, which can reduce the space required for the battery cell installation cavity 11 and is beneficial to reducing the volume of the vehicle-mounted starting power supply 100.

[0106] In some specific embodiments of the present utility model, such as Figure 2As shown in the figure, the vehicle-mounted starting power supply 100 has eight battery cells 2 and eight battery cell mounting cavities 11, and the battery cells 2 are respectively mounted in the battery cell mounting cavities 11. The eight battery cell mounting cavities 11 are arranged in an array of three rows and three columns. Among them, the row of battery cell mounting cavities 11 close to the external exhaust hole 13 is the first row, the column of battery cell mounting cavities 11 close to the external exhaust hole 13 is the third column, and the position of the first row and the third column is vacant.

[0107] The battery cell mounting cavity 11 in the first row and the first column is the first battery cell mounting cavity 111, the battery cell mounting cavity 11 in the first row and the second column is the second battery cell mounting cavity 112, the battery cell mounting cavity 11 in the second row and the first column is the third battery cell mounting cavity 113, and the battery cell mounting cavity 11 in the second row and the second column is the fourth battery cell mounting cavity 114, and so on. As Figure 2 shown in the figure, the battery cell mounting cavity 11 in the third row and the third column is the eighth battery cell mounting cavity 118.

[0108] As Figure 2 shown in the figure, a first channel 121 is communicated between the first battery cell mounting cavity 111 and the second battery cell mounting cavity 112, a first channel 121 is communicated between the second battery cell mounting cavity 112 and the fourth battery cell mounting cavity 114, a first channel 121 is communicated between the third battery cell mounting cavity 113 and the fourth battery cell mounting cavity 114, and a first channel 121 is communicated between the fourth battery cell mounting cavity 114 and the fifth battery cell mounting cavity 115. A first channel 121 is communicated between the sixth battery cell mounting cavity 116 and the seventh battery cell mounting cavity 117, a first channel 121 is communicated between the seventh battery cell mounting cavity 117 and the eighth battery cell mounting cavity 118, and a first channel 121 is communicated between the eighth battery cell mounting cavity 118 and the fifth battery cell mounting cavity 115.

[0109] The fifth battery cell mounting cavity 115 is communicated with a second channel 122, and the second channel 122 extends towards the position of the first row and the third column to be communicated with the external exhaust hole 13.

[0110] The eight battery cell mounting cavities 11 in the embodiment of the present utility model are communicated to form three air flow channels.

[0111] The first battery cell mounting cavity 111, the second battery cell mounting cavity 112, the fourth battery cell mounting cavity 114 and the fifth battery cell mounting cavity 115 form an air flow channel. When the battery cell 2 in any one of the first battery cell mounting cavity 111, the second battery cell mounting cavity 112 and the fourth battery cell mounting cavity 114 is damaged and releases gas, the gas will flow into the fifth battery cell mounting cavity 115 and then be discharged from the external exhaust hole 13.

[0112] The third battery cell installation cavity 113, the fourth battery cell installation cavity 114, and the fifth battery cell installation cavity 115 form an air flow channel. When the battery cell 2 in any one of the third battery cell installation cavity 113 and the fourth battery cell installation cavity 114 is damaged and releases gas, the gas will flow into the fifth battery cell installation cavity 115 and then be discharged from the external exhaust hole 13.

[0113] The sixth battery cell installation cavity 116, the seventh battery cell installation cavity 117, the eighth battery cell installation cavity 118, and the fifth battery cell installation cavity 115 form an air flow channel. When the battery cell 2 in any one of the sixth battery cell installation cavity 116, the seventh battery cell installation cavity 117, and the eighth battery cell installation cavity 118 is damaged and releases gas, the gas will flow into the fifth battery cell installation cavity 115 and then be discharged from the external exhaust hole 13.

[0114] The vehicle according to an embodiment of the present invention includes the vehicle-mounted starting power supply 100 described in any one of the above.

[0115] By providing the vehicle-mounted starting power supply 100 as described above, the driving safety of the vehicle according to an embodiment of the present invention can be improved.

[0116] In the description of this specification, the description with reference to terms such as "embodiment", "example", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0117] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A housing of a vehicle-mounted starting power supply, characterized in that: A battery cell installation cavity and an exhaust passage communicating with the battery cell installation cavity are provided in the shell, and an external exhaust hole communicating with the exhaust passage is provided on the shell; The exhaust channel comprises: a second channel, one end of the second channel is connected to the external exhaust hole, and the other end of the second channel is connected to at least one of the battery cell installation cavities.

2. The housing of the vehicle-mounted starting power supply according to claim 1, characterized in that: There are at least two battery cell installation cavities; The exhaust channel includes: a first channel, wherein the first channel communicates with two adjacent battery cell installation cavities.

3. The housing of the vehicle-mounted starting power supply according to claim 2, characterized in that: The first channel is in the shape of a long strip extending along the height direction of the battery cell installation cavity.

4. The housing of the vehicle-mounted starting power supply according to claim 2, characterized in that: Two adjacent battery cell installation cavities are arranged in parallel, the portion of the shell located between the two adjacent battery cell installation cavities is a partition wall, and the first channel is arranged through the thickness direction of the partition wall and is located at the minimum wall thickness of the partition wall.

5. The housing of the vehicle-mounted starting power supply according to claim 1, characterized in that: The housing comprises: Shell bottom wall; A mounting frame, the mounting frame is arranged on the bottom wall of the shell, the mounting frame surrounds the battery cell mounting cavity, the battery cell mounting cavity is open on a side away from the bottom wall of the shell, and is used for assembling the battery cell; A side bracket, the side bracket is arranged on the bottom wall of the shell, the side bracket is located on one side of the mounting frame, and the side bracket is used to enclose the second channel; The shell side wall is annular and connected to the edge of the shell bottom wall, and the shell side wall surrounds the outer side of the mounting frame and the side bracket.

6. The housing of the vehicle-mounted starting power supply according to claim 5, characterized in that: The second channel includes: a buffer cavity and an extension channel, and the external exhaust hole is arranged on the side wall of the shell; The side bracket comprises: A side plate, wherein the side plate is connected to the shell side wall, the buffer cavity is enclosed between the side plate and the shell side wall, and the buffer cavity is connected to the external exhaust hole; An extension plate, one end of which is connected to the side plate, and the other end of which is adjacent to or abuts against the mounting frame, the extension plate and the shell bottom wall enclose an extension channel, and one end of which is connected to the buffer cavity; A release hole is provided on the mounting frame at the other end corresponding to the extension channel, and the release hole is connected to the adjacent battery cell mounting cavity.

7. The housing of the vehicle-mounted starting power supply according to claim 6, characterized in that: A positioning portion is provided on the shell bottom wall and / or the mounting frame, and the extension plate cooperates with the positioning portion.

8. The housing of the vehicle-mounted starting power supply according to claim 7, characterized in that: The positioning portion is arranged on the bottom wall of the shell and includes positioning strips arranged on two opposite sides of the release hole, and the two positioning strips are against the extension plate.

9. The housing of the vehicle-mounted starting power supply according to claim 5, characterized in that: At least two of the shell bottom wall, the shell side wall, and the mounting frame are integrally formed parts.

10. The housing of the vehicle-mounted starting power supply according to claim 5, characterized in that: The housing further comprises: A cell pressing plate, the cell pressing plate being located at one end of the mounting frame away from the shell bottom wall, the cell pressing plate being connected to at least one of the shell side wall and the mounting frame, and having an opening; An upper cover, the upper cover is arranged opposite to the shell bottom wall and connected to the shell side wall; The vehicle-mounted starting power supply further includes a connector, one end of which is electrically connected to the battery cell through the opening, and the other end of which extends to the upper cover.

11. The housing of the vehicle-mounted starting power supply according to any one of claims 1 to 10, characterized in that: The exhaust channel further includes: a gas collecting cavity located at one end of the battery cell installation cavity.

12. The housing of the vehicle-mounted starting power supply according to claim 11, characterized in that: A step surface is formed between the gas collecting cavity and the battery cell installation cavity for abutting against one end of the battery cell.

13. A vehicle-mounted starting power supply, characterized in that: include: The housing of the vehicle-mounted starting power supply according to any one of claims 1 to 12; A battery cell is installed in the battery cell installation cavity.

14. A vehicle, characterized in that: It comprises the vehicle-mounted starting power supply according to claim 13.

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