Vehicle battery and vehicle

Abstract

The invention provides a vehicle battery and a vehicle. A vehicle battery includes an energy bin, a floor, a runner plate, and a bottom guard plate. The energy bin comprises a box body and a battery cell; the battery cell is arranged in the box body; the battery cell comprises a pole, a battery cell main body and a first anti-explosion valve, the pole is arranged at the top of the battery cell main body, and the first anti-explosion valve is arranged at the bottom of the battery cell main body. The bottom plate is arranged at the bottom of the box body and comprises a first connecting hole, and the arrangement position of the first connecting hole corresponds to the arrangement position of the first anti-explosion valve. The runner plate is arranged on the side, away from the energy bin, of the bottom plate, and a liquid cooling channel is defined by the runner plate and the bottom plate; the runner plate comprises a second connecting hole, and the arrangement position of the second connecting hole corresponds to the arrangement position of the first anti-explosion valve. The bottom protection plate is arranged on the side, away from the bottom plate, of the runner plate, a gap is formed between the bottom protection plate and the runner plate, and an exhaust channel is defined by the first connecting hole, the second connecting hole and the gap; one end of the exhaust channel communicates with the first anti-explosion valve, and the other end communicates with outside air.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle battery, in particular to a vehicle battery and a vehicle. BACKGROUND

[0002] At present, under the thermal runaway working condition of new energy vehicle power battery, high-temperature spatter (containing flammable gas, electrolyte vapor and conductive solid particles) with a temperature of up to 1000℃ and a pressure of more than 2MPa will be generated in the cell.

[0003] At present, in order to solve the problem that the spatter of the cell enters the sealed space of the battery box under the thermal runaway working condition and causes secondary damage, and to avoid the fire and explosion of the high-voltage battery caused by the thermal spread of the high-voltage battery, the high-voltage battery mainly adopts a thermal-electric separation design scheme. In this scheme, the liquid cooling plate is arranged between the cells, and multiple liquid cooling plates are needed, which greatly occupies the space of the battery pack, and is not conducive to the lightweight of the battery pack, the improvement of the energy density and the volume utilization rate. SUMMARY

[0004] The present application provides a vehicle battery and a vehicle which are beneficial to the lightweight of the battery pack and the improvement of the space utilization rate of the battery pack.

[0005] In a first aspect, the present application provides a vehicle battery, comprising:

[0006] An energy bin comprising a box body and a cell; the cell is arranged in the box body, and the cell comprises a cell main body and a first explosion-proof valve arranged at the bottom of the cell main body;

[0007] A bottom plate arranged at the bottom of the box body, wherein the bottom plate comprises a first connecting hole, and the arrangement position of the first connecting hole corresponds to the arrangement position of the first explosion-proof valve;

[0008] A flow channel plate arranged on the side of the bottom plate away from the energy bin, wherein the flow channel plate and the bottom plate enclose a liquid cooling channel therebetween; the flow channel plate comprises a second connecting hole, and the arrangement position of the second connecting hole corresponds to the arrangement position of the first explosion-proof valve;

[0009] A bottom guard plate arranged on the side of the flow channel plate away from the bottom plate and spaced apart from the flow channel plate, wherein the first connecting hole, the second connecting hole and the space enclose an exhaust channel; one end of the exhaust channel is communicated with the first explosion-proof valve, and the other end is communicated with the external air.

[0010] Optionally, the bottom plate comprises a third connecting hole arranged on one side of the first connecting hole; the flow channel plate comprises a fourth connecting hole, and the arrangement position of the fourth connecting hole corresponds to that of the third connecting hole.

[0011] The energy bin comprises a partition and an exhaust port, the partition divides the box into a first chamber and a second chamber, the electric core is arranged inside the first chamber, the exhaust passage further comprises the third connecting hole, the fourth connecting hole and the second chamber, the exhaust port is arranged on the side wall of the box and corresponds to the position of the second chamber.

[0012] Optionally, the second chamber comprises a first part and a second part in communication with the first part, arranged as an "L" shape structure, the first part is located at the bottom of the box and extends in the horizontal direction and communicates with the third connecting hole, the second part is arranged on the side wall of the box, and the second part communicates with the exhaust port.

[0013] The third connecting hole and the fourth connecting hole are arranged at one end of the first part close to the electric core.

[0014] Optionally, a second explosion-proof valve is arranged at the exhaust port.

[0015] Optionally, the energy bin further comprises a power distribution unit and a battery management unit, the power distribution unit and the battery management unit are arranged in the first chamber.

[0016] Optionally, the number of electric cores is multiple, multiple electric cores are arranged in a first direction and a second direction to form an array structure, the number of second connecting holes is multiple, multiple second connecting holes are arranged corresponding to the first explosion-proof valve at the bottom of multiple electric cores, and multiple second connecting holes are arranged in an array, wherein the first direction is perpendicular to the second direction.

[0017] Optionally, the flow channel plate further comprises a liquid cooling groove, the liquid cooling groove is arranged between two adjacent rows of second connecting holes, or the liquid cooling groove is arranged between two adjacent columns of second connecting holes.

[0018] Optionally, the liquid cooling groove comprises a first liquid cooling groove and a second liquid cooling groove, the first liquid cooling groove extends in the first direction.

[0019] In the second direction, the first liquid cooling groove extends between two adjacent second connecting holes,

[0020] The second liquid cooling groove extends in the second direction, and the second liquid cooling groove is connected to both ends of the first liquid cooling groove in the first direction, wherein the first direction is perpendicular to the second direction.

[0021] Optionally, the liquid cooling groove is recessed away from the bottom plate, the upper surface of the flow channel plate is attached to the bottom plate, and the liquid cooling groove and the side surface of the bottom plate facing the flow channel plate form a liquid cooling channel.

[0022] Optionally, a cover is arranged on the side of the energy bin away from the bottom plate, and the cover is sealingly connected with the energy bin.

[0023] In a second aspect, the application provides a vehicle battery, which comprises the vehicle battery as described in the first aspect.

[0024] By the above arrangement, the liquid cooling channel is avoided to be arranged between the battery cells and the battery cells, and the space between the battery cells and the bottom plate is fully utilized by arranging the flow channel plate and the bottom plate under the battery cells, so as to reduce the space occupied by the liquid cooling plate between the battery cells, thereby improving the space utilization of the battery pack. When the battery cell is in thermal runaway, the spewing material enters the exhaust channel through the first explosion-proof valve at the bottom of the battery cell, and is finally discharged to the outside air, avoiding the secondary explosion and secondary arc hazard caused by the flammable and conductive dust entering the energy bin. At the same time, the spewing material directly enters the interval through the first connecting hole and the second connecting hole, which is convenient for nearby exhaust and more smooth exhaust channel. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the disclosure.

[0026] Figure 1 Fig. 1 shows a schematic diagram of one embodiment of the vehicle battery of the application.

[0027] Figure 2 Fig. 2 shows a schematic diagram of another view of the vehicle battery. Figure 1 Fig. 3 shows a schematic diagram of another view of the vehicle battery.

[0028] Figure 3 Fig. 4 shows a schematic diagram of another view of the vehicle battery. Figure 1 Fig. 5 shows a schematic diagram of another view of the vehicle battery.

[0029] Figure 4 Fig. 6 shows a schematic diagram of another view of the vehicle battery. Figure 1 Fig. 7 shows a schematic diagram of another view of the vehicle battery.

[0030] Figure 5 Fig. 8 shows a schematic diagram of another view of the vehicle battery. Figure 1 Fig. 9 shows a schematic diagram of another view of the vehicle battery.

[0031] Figure 6 Fig. 10 shows a schematic diagram of another view of the vehicle battery. Figure 1 Fig. 11 shows a schematic diagram of another view of the vehicle battery.

[0032] Figure 7 Fig. 12 shows a schematic diagram of one embodiment of the bottom plate and the flow channel plate of the vehicle battery of the application.

[0033] Figure 8 Fig. 13 shows a schematic diagram of one embodiment of the flow channel plate of the vehicle battery of the application.

[0034] Figure 9 Fig. 1 shows a schematic view of one embodiment of a battery case of the vehicle battery of the present application.

[0035] Figure 10 Fig. 2 shows a cross-sectional schematic view of one embodiment of the vehicle battery of the present application.

[0036] Figure 11 Fig. 3 shows a cross-sectional exploded schematic view of the vehicle battery. Figure 10

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 100, vehicle battery; 10, energy compartment; 11, battery case; 12, battery cell; 121, first explosion-proof valve; 13, exhaust port; 131, second explosion-proof valve; 14, partition; 15, first chamber; 16, second chamber; 20, bottom plate; 21, first connecting hole; 22, third connecting hole; 30, flow channel plate; 31, second connecting hole; 32, fourth connecting hole; 33, liquid cooling groove; 331, first liquid cooling groove; 332, second liquid cooling groove; 40, bottom guard plate; 50, cover; 60, flow channel bottom plate; 71, water inlet; 72, water outlet. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments (or, the implementation manners) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0040] If the present application embodiments involve directional indications or positional relationships (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a certain posture (as shown in the drawings); if the specific posture changes, the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. in the present application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0041] The vehicle battery and the vehicle of the present application will be described in detail below in conjunction with the accompanying drawings. The features in the following embodiments and implementation manners can be combined with each other without conflict.

[0042] The present application provides a vehicle, which can be an electric vehicle, comprising a vehicle battery. The vehicle battery provides electric energy for the driving motor of the vehicle, thereby driving the vehicle to run. ​

[0043] The vehicle battery 100 and the vehicle of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0044] This application provides a vehicle, which may be an electric vehicle, including a vehicle battery 100. The vehicle battery 100 provides electrical power to the vehicle's drive motor, thereby driving the vehicle.

[0045] See also Figures 1-11 As shown, the vehicle battery 100 includes an energy compartment 10, a base plate 20, a flow channel plate 30, and a bottom protective plate 40. The energy compartment 10 includes a housing 11 and battery cells 12; the battery cells 12 are disposed within the housing 11. Each battery cell 12 includes a terminal post, a cell body, and a first explosion-proof valve 121. The terminal post is located at the top of the cell body, and the first explosion-proof valve 121 is located at the bottom of the cell body. The base plate 20 is located at the bottom of the housing 11 and includes a first connecting hole 21, the position of which corresponds to the position of the first explosion-proof valve 121. The flow channel plate 30 is located on the side of the base plate 20 facing away from the energy compartment 10, and the flow channel plate 30 and the base plate 20 form a liquid cooling channel; the flow channel plate 30 includes a second connecting hole 31, the position of which corresponds to the position of the first explosion-proof valve 121. The bottom guard plate 40 is located on the side of the flow channel plate 30 away from the bottom plate 20, and a gap is provided between it and the flow channel plate 30. The first connecting hole 21, the second connecting hole 31, and the gap form an exhaust channel (see...). Figure 10 and Figure 11 (As indicated by the middle arrow); one end of the exhaust channel is connected to the first explosion-proof valve 121, and the other end is connected to the outside air.

[0046] By employing the above-mentioned design, liquid cooling channels are avoided between battery cells 12. By positioning the flow channel plate 30 and the base plate 20 below the battery cells 12, the space between the battery cells 12 and the bottom protective plate 40 is fully utilized, reducing the space encroached upon by the liquid cooling plate and thus improving the space utilization rate of the vehicle battery 100. In the event of thermal runaway in battery cell 12, the ejected material enters the exhaust channel through the first explosion-proof valve 121 at the bottom of the battery cell 12 and is ultimately discharged into the outside air, preventing secondary explosions and arcing hazards caused by flammable or conductive dust entering the energy chamber 10. Simultaneously, the ejected material directly enters the compartment through the first connecting hole 21 and the second connecting hole 31, facilitating nearby exhaust and ensuring a smoother exhaust channel.

[0047] In an optional embodiment, see Figure 7 and Figure 8As shown, the bottom plate 20 includes a third connecting hole 22 disposed on one side of the first connecting hole 21; the flow channel plate 30 includes a fourth connecting hole 32 corresponding to the setting position of the third connecting hole 22. The energy bin 10 includes a partition 14 and an exhaust port 13, the partition 14 divides the box body 11 into a first chamber 15 and a second chamber 16, the battery cell 12 is disposed inside the first chamber 15, and the exhaust passage further includes the third connecting hole 22, the fourth connecting hole 32 and the second chamber 16, and the exhaust port 13 is disposed on the side wall of the box body 11 and corresponds to the position of the second chamber 16.

[0048] When the battery cell 12 occurs thermal runaway, the spewing material enters the exhaust passage from the first explosion-proof valve 121 at the bottom of the battery cell 12, and is finally discharged into the external air. The spewing material cannot enter the first chamber 15, avoiding the secondary explosion and secondary arc hazards caused by the flammable and conductive dust entering the energy bin 10.

[0049] In optional embodiments, referring to Figure 10 and Figure 11 As shown, the second chamber 16 includes a first part and a second part in communication with the first part, and is arranged in an "L" shape structure. The first part is located at the bottom of the box body 11 and extends in a horizontal direction, and is in communication with the third connecting hole 22. The second part is disposed on the side wall of the box body 11, and the second part is in communication with the exhaust port 13. The third connecting hole 22 and the fourth connecting hole 32 are disposed at one end of the first part close to the battery cell 12. In some embodiments, the first part extends in the first direction X. The number of third connecting holes 22 is multiple and is arranged in a second direction Y. The number of fourth connecting holes 32 is multiple and is arranged correspondingly with the third connecting holes 22. The exhaust passage further includes a third part in communication with the first part and in communication with the plurality of third connecting holes 22, so that the spewing material enters the second chamber 16 through the plurality of third connecting holes 22 and the fourth connecting holes 32, and realizes rapid exhaust.

[0050] In this way, the part close to the battery cell 12 located in the box body 11 is beneficial to exhaust nearby, and the exhaust passage is more unobstructed. The partition 14 is correspondingly arranged in an "L" shape structure, the partition 14 extends from the box body 11 to the battery cell 12, forms a cross beam of the vehicle battery 100, thereby supporting the battery pack and reducing the risk of deformation of the battery pack caused by the pressure of the spewing material in the exhaust passage.

[0051] In optional embodiments, referring to Figure 4 and Figure 5 As shown, a second explosion-proof valve 131 is arranged at the exhaust port 13.

[0052] When the pressure of the eruption material inside the exhaust channel reaches a critical value, the rapid pressure reduction inside the vehicle battery 100 is achieved by opening the second explosion-proof valve 131, avoiding the secondary explosion and secondary arc hazards caused by the flammable and conductive dust entering the energy bin 10, avoiding the flow of eruption material rushing into the passenger compartment or impacting the vehicle chassis structure, and facilitating the timely detection of abnormal conditions of the vehicle battery 100 by the battery management system.

[0053] In an optional embodiment, the energy bin 10 further comprises a power distribution unit and a battery management unit, and the power distribution unit and the battery management unit are arranged in the first chamber 15.

[0054] In an optional embodiment, the energy bin 10 further comprises a high-voltage copper bar and a sampling wire harness, and the high-voltage copper bar and the sampling wire harness are arranged in the first chamber 15.

[0055] When the thermal runaway occurs in the battery cell 12, the eruption material enters the exhaust channel through the first explosion-proof valve 121 at the bottom of the battery cell 12, and is finally discharged to the outside air. The eruption material cannot enter the first chamber 15, ensuring the safety of the power distribution unit, the battery management unit, the high-voltage copper bar, and the sampling wire harness inside the energy bin 10, and avoiding the secondary explosion and secondary arc hazards caused by the flammable and conductive dust entering the energy bin 10.

[0056] In an optional embodiment, as shown in Figure 1 and Figure 2 , the number of battery cells 12 is multiple, and the multiple battery cells 12 are arranged along the first direction X and the second direction Y to form an array structure. The number of second connecting holes 31 is multiple, and the multiple second connecting holes 31 are respectively arranged corresponding to the first explosion-proof valves 121 at the bottom of the multiple battery cells 12, and the multiple second connecting holes 31 form an array arrangement. Among them, the first direction X is perpendicular to the second direction Y.

[0057] In this way, it is beneficial to the compact arrangement inside the vehicle battery 100, and it is beneficial to the vehicle battery 100 to better withstand mechanical stresses such as vibration and impact, and to improve the cooling of the battery cells 12 by the liquid cooling channel enclosed by the bottom plate 20 and the flow channel plate 30, thereby improving the space utilization rate of the vehicle battery 100.

[0058] In an optional embodiment, as shown in Figure 7 and Figure 8 , the flow channel plate 30 further comprises a liquid cooling groove 33, and the liquid cooling groove 33 is arranged between adjacent two rows of second connecting holes 31, or the liquid cooling groove 33 is arranged between adjacent two columns of second connecting holes 31. Among them, the liquid cooling groove 33 is used to make the cooling liquid flow along the extension direction of the liquid cooling groove 33.

[0059] Thus, the cooling liquid in the liquid cooling channel can cool the battery cell 12, and meanwhile, the liquid cooling groove 33 avoids the second connecting hole 31, and the bottom plate 20 and the flow channel plate 30 simultaneously realize the cooling of the battery cell 12 and the flow guiding effect of discharging the spewing matter to the outside of the vehicle battery 100, thereby improving the space utilization of the vehicle battery 100.

[0060] In an optional embodiment, referring to Figure 8 As shown in the figure, the liquid cooling groove 33 includes a first liquid cooling groove 331 and a second liquid cooling groove 332, and the first liquid cooling groove 331 extends along the first direction X. In the second direction Y, the first liquid cooling groove 331 extends between two adjacent second connecting holes 31, and the second liquid cooling groove 332 extends along the second direction Y, and the second liquid cooling groove 332 is connected to both ends of the first liquid cooling groove 331 in the first direction X. Wherein, the first direction X is the width direction of the vehicle battery 100, and the second direction Y is the length direction of the vehicle battery 100.

[0061] Thus, it is beneficial to the uniform distribution of the cooling liquid under the plurality of battery cells 12, and is beneficial to the cooling effect of the battery cell 12, and the bottom plate 20 and the flow channel plate 30 simultaneously realize the cooling of the battery cell 12, thereby improving the space utilization of the vehicle battery 100.

[0062] In an optional embodiment, referring to Figure 7 , Figure 8 and Figure 10 As shown in the figure, the liquid cooling groove 33 is recessed away from the bottom plate 20, the upper surface of the flow channel plate 30 is attached to the bottom plate 20, and the liquid cooling groove 33 and the side of the bottom plate 20 facing the flow channel plate 30 form a liquid cooling channel. Specifically, the bottom plate 20 is made of aluminum alloy, and the flow channel plate 30 and the bottom plate 20 are welded by brazing process to form a liquid cooling bottom plate 20. The liquid cooling bottom plate 20 is assembled at the bottom of the aluminum alloy tailor-welded box body 11 by stirring friction welding, TIG, MIG, or FDS connection process, to form a complete lower box body 11 of the vehicle battery 100. The liquid cooling bottom plate 20 can simultaneously serve as a load-bearing battery cell 12 and a liquid cooling plate, so that the box body 11 can bear the load of the battery cell 12 and provide liquid thermal management function for the vehicle battery 100. Moreover, the stamping protrusion direction of the flow channel plate 30 faces the bottom guard plate 40, and the stamping protrusion position is between the intervals after final assembly, so as to avoid occupying the energy storage space 10 of the vehicle battery 100, thereby improving the space utilization of the vehicle battery 100.

[0063] In an optional embodiment, the vehicle battery 100 further includes an inlet 71 and an outlet 72. The inlet 71 and outlet 72 serve as interfaces for exchanging coolant between the vehicle battery 100 and the vehicle's liquid cooling system. They can be located inside or outside the vehicle battery 100. In this embodiment, the inlet 71 and outlet 72 are located on the side wall of the housing 11. The coolant flows from the inlet 71 into the liquid cooling channel formed by the bottom plate 20 and the flow channel plate 30, exchanges heat with the battery cells 12, and then flows back to the vehicle's thermal management system through the outlet 72.

[0064] In an optional embodiment, the bottom guard plate 40 is bolted to the bottom of the housing 11, forming a gap between it and the flow channel plate 30.

[0065] In an optional embodiment, see Figure 1 As shown, the vehicle battery 100 also includes a cover 50, which is disposed on the side of the energy compartment 10 away from the base plate 20, and the cover 50 is sealed to the energy compartment 10.

[0066] After the cover 50 and the box 11 are assembled, they form a sealed space, ensuring the IP68 and IPX9K dustproof and waterproof performance of the energy chamber 10, and ensuring that the battery cell 12, battery management unit, power distribution unit, high voltage copper busbar, sampling harness and other components are isolated from the environment, which is beneficial to the safety of the vehicle battery 100.

[0067] In an optional embodiment, the base plate 20 is made of 3-series, 6-series, 7-series, 6-series, and 3-series composite aluminum alloy, with a thickness of 1-3 mm. Exhaust channel holes are machined using a stamping process. To reduce mold costs and improve yield, it can be composed of multiple smaller units. After the smaller units of the base plate 20 are extruded, the first connecting hole 21 and the third connecting hole 22 are stamped, and then welded and assembled to the designed dimensions of the base plate 20 using processes such as friction stir welding, TIG, and MIG. The flow channel plate 30 is made of 1-series, 3-series, and 5-series aluminum alloy, with a thickness of 0.6-3 mm. The second connecting hole 31 and the fourth connecting hole 32, and the liquid cooling tank 33 are machined using a stamping process, with a stamping depth of 2-8 mm. The flow channel plate 30 is formed by stamping one or more aluminum alloy sheets.

[0068] The exhaust passage of the application is composed of the closed space between the bottom plate 20, the flow channel plate 30 and the bottom guard plate 40. The first connecting hole 21 corresponding to the first explosion-proof valve 121 is arranged on the bottom plate 20, the second connecting hole 31 corresponding to the first explosion-proof valve 121 is arranged on the flow channel plate 30, the third connecting hole 22 on the bottom plate 20 and the fourth connecting hole 32 on the flow channel plate 30 are concentrically arranged with the crossbeam of the vehicle battery 100, the first part of the second cavity and the exhaust port 13 are concentrically arranged with the crossbeam of the vehicle battery 100. The spewing material of the cell 12 passes through the first connecting hole 21, the second connecting hole 31, the interval, the fourth connecting hole 32, the third connecting hole 22, the first part and the second part in turn, and finally is discharged into the external air through the second explosion-proof valve 131.

[0069] In the application, the thermal runaway gas enters the second cavity at the position of the crossbeam of the vehicle battery 100, greatly shortening the diffusion path of the thermal runaway gas. The influence of high temperature of the thermal runaway gas on the internal parts of the vehicle battery 100 is avoided. The exhaust passage beam can be used as a thermal runaway exhaust passage and also as a structural part of the vehicle battery 100, further improving the integration of the vehicle battery 100 and being more conducive to the lightweight design and energy density improvement of the vehicle battery 100.

[0070] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the application is not limited to the precise structure described in the above embodiments and shown in the drawings; any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A vehicle battery, characterized by include: An energy storage container includes a housing and a battery cell; the battery cell is disposed within the housing, and the battery cell includes a battery cell body and a first explosion-proof valve, the first explosion-proof valve being disposed at the bottom of the battery cell body; A base plate is disposed at the bottom of the enclosure, and the base plate includes a first connecting hole, the position of which corresponds to the position of the first explosion-proof valve; A flow channel plate is disposed on the side of the base plate away from the energy chamber, and the flow channel plate and the base plate form a liquid cooling channel; the flow channel plate includes a second connecting hole, and the position of the second connecting hole corresponds to the position of the first explosion-proof valve; A bottom guard plate is disposed on the side of the flow channel plate away from the bottom plate, and a gap is provided between the bottom guard plate and the flow channel plate. The first connecting hole, the second connecting hole and the gap form an exhaust channel. One end of the exhaust channel is connected to the first explosion-proof valve, and the other end is connected to the outside air.

2. The vehicle battery of claim 1, wherein, The base plate includes a third connecting hole, which is located on one side of the first connecting hole; the flow channel plate includes a fourth connecting hole, which is located in a position corresponding to the third connecting hole. The energy chamber includes a partition and an exhaust port. The partition divides the housing into a first chamber and a second chamber. The battery cell is disposed inside the first chamber. The exhaust channel also includes the third connection hole, the fourth connection hole and the second chamber. The exhaust port is disposed on the side wall of the housing and corresponds to the position of the second chamber.

3. The vehicle battery of claim 2, wherein, The second chamber includes a first part and a second part communicating with the first part, configured as an "L" shape. The first part is located at the bottom of the box and extends horizontally, communicating with the third connecting hole. The second part is disposed on the side wall of the box and communicates with the exhaust port. The third and fourth connection holes are located at one end of the first portion near the battery cell.

4. The vehicle battery of claim 2, wherein, Includes a second explosion-proof valve, which is disposed at the exhaust port; and / or The energy storage unit also includes a power distribution unit and a battery management unit, which are located within the first chamber.

5. The vehicle battery of claim 1, wherein, The number of battery cells is multiple, and the multiple battery cells are arranged along a first direction and a second direction to form an array structure; the number of second connection holes is multiple, and the multiple second connection holes are respectively provided corresponding to the first explosion-proof valves at the bottom of the multiple battery cells, and the multiple second connection holes are arranged in an array, wherein the first direction is perpendicular to the second direction.

6. The vehicle battery of claim 1, wherein, The flow channel plate also includes a liquid cooling tank, which is disposed between two adjacent rows of the second connecting holes, or between two adjacent columns of the second connecting holes.

7. The vehicle battery of claim 6, wherein, The liquid cooling tank includes a first liquid cooling tank and a second liquid cooling tank, wherein the first liquid cooling tank extends along a first direction; In the second direction, the first liquid cooling tank extends between two adjacent second connecting holes. The second liquid cooling tank extends along the second direction and is connected to both ends of the first liquid cooling tank in the first direction, wherein the first direction is perpendicular to the second direction.

8. The vehicle battery of claim 6, wherein, The liquid cooling tank is recessed away from the base plate, the upper surface of the flow channel plate is attached to the base plate, and the liquid cooling tank and the side of the base plate facing the flow channel plate form a liquid cooling channel.

9. The vehicle battery according to claim 1, characterized in that, It also includes a cover, which is disposed on the side of the energy chamber away from the base plate, and the cover is sealed to the energy chamber.

10. A vehicle, characterized in that, The vehicle includes a vehicle battery as described in any one of claims 1-9.

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