DE202021107025U1 - battery box and battery pack - Google Patents

Abstract

Battery box (100), characterized in that this battery box comprises:
a casing (1), a fire extinguishing flow channel (14) being provided in a side wall of the casing (1), and the side wall of the casing (1) being further provided with a fire drain opening (12) connected with a fire extinguishing flow channel (14) related;
a fire extinguishing chamber (2), the fire extinguishing chamber (2) being attached to the fire outlet opening (12), the fire extinguishing chamber (2) having a fire inlet opening (26) and a fire outlet opening (27), and the fire extinguishing chamber (2) having a spoiler duct (21) is provided, wherein the spoiler duct (21) serves to establish a connection between the fire inlet opening (26) and the fire outlet opening (27).

Description

TECHNICAL AREA

The present application relates to the technical field of battery production, in particular a battery box and a battery pack with such a battery box.

STATE OF THE ART

With the increase of electric vehicles, safety problems are gradually exposed, and fire incidents occur from time to time, and the function of battery safety management of electric vehicles receives more and more attention. With the related technology, once a thermal runaway occurs in the battery cell, a large amount of high-temperature gas is quickly generated, causing the internal pressure of the PACK to rise sharply. If the gas cannot be released effectively, it can lead to thermal runaway and even explosion of the system. Currently, the main rationale for controlling thermal runaway of lithium battery systems is that i) directional blast suppression that directs thermally uncontrollable fire airflow into a designated vent duct; ii) an effective barrier for the purpose of forming a thermal barrier between the battery pack and the vehicle, delaying the propagation of high temperature into the passenger compartment and prolonging the escape time, with the high flow velocity in dissipating the thermally uncontrollable flow of fire air causing severe shocks to the explosion-proof structures, safety is poor and there is room for improvement.

CONTENTS OF THIS APPLICATION

The present application aims to solve at least one of the problems existing in the prior art. To this end, an object of the present application is to provide a battery box, the battery box being able to effectively solve the problem of violent impact on the explosion-proof structures when expelling the thermally uncontrollable fire airflow and enhance the safety of the battery box.

A battery box according to an embodiment of the present application includes: a case, wherein a fire extinguishing flow channel is provided in a side wall of the case, and the side wall of the case is further provided with a fire drain hole communicating with the fire extinguishing flow channel; a fire extinguishing chamber, the fire extinguishing chamber being attached to the fire discharge opening, the fire extinguishing chamber having a fire inlet opening and a fire outlet opening, and a spoiler duct being provided in the extinguishing box, the spoiler duct serving to establish a connection between the fire inlet opening and the fire outlet opening.

According to the battery box of an exemplary embodiment of the present application, a directed discharge of the thermally uncontrollable fire air flow can be achieved, which ensures system pressure equalization within the battery box, and the thermally uncontrollable fire air flow in the fire extinguishing chamber can be disturbed and delayed by providing the spoiler duct in the fire extinguishing chamber of the battery box , whereby the air flow in the fire extinguishing chamber does not cause serious impact on the explosion-proof valve when the air flow enters the explosion-proof valve, thereby improving the safety performance of the battery box.

In a battery box according to some exemplary embodiments of the present application, a spoiler is provided in the fire extinguishing chamber, the spoiler directly facing the fire inlet opening in the inflow direction of the fire inlet opening, and the spoiler serves to define a spoiler channel.

In a battery box according to some exemplary embodiments of the present application, it is provided that the spoiler comprises a first spoiler and a second spoiler, the first spoiler and the second spoiler being arranged one behind the other in an inflow direction of the fire inlet opening; wherein the first spoiler and the second spoiler are arranged alternately in the inflow direction of the fire inlet opening and form the spoiler channel in a curved manner.

The battery box according to some embodiments of the present application further comprises: a baffle plate, wherein the first side wall of the fire extinguishing chamber is directly opposite the fire outlet opening, and wherein the first side wall and the baffle plate are arranged opposite, wherein the fire inlet opening is between the first side wall and the baffle plate wherein the first spoiler and the second spoiler are respectively provided on the first side wall and the flow guide plate, and wherein the first spoiler extends toward the flow guide plate, wherein the second spoiler extends toward the first side wall.

In a battery box according to some exemplary embodiments of the present application, it is provided that an overflow duct is also provided in the fire extinguishing chamber, the overflow duct and the spoiler duct being arranged on both sides of the spoiler, and the second side wall of the fire extinguishing chamber lying directly opposite the fire inlet opening , and wherein the second sidewall and the flow directing plate are spaced apart and define the transfer gap, the transfer gap serving to connect the transfer port to the spoiler port.

In a battery case according to some exemplary embodiments of the present application, it is provided that the first side wall and the flow guide plate are each provided with stop plates that project towards one another, with the first spoiler being fixedly mounted on a stop plate of the flow guide plate, with the second spoiler being fixed on a stop plate mounted on the first side panel.

In a battery box according to some exemplary embodiments of the present application, it is provided that a distance between the first spoiler and two adjacent second spoilers is the same.

In a battery box according to some exemplary embodiments of the present application, it is provided that a plurality of first spoilers and a plurality of second spoilers are respectively provided, and the plurality of first spoilers and the plurality of second spoilers are arranged alternately in an inflow direction of the fire inlet port. In a battery box according to some exemplary embodiments of the present application, it is provided that a detachable explosion-proof valve is attached to the fire outlet opening.

The present application also provides a battery pack.

A battery pack according to an embodiment of the present application is provided with a battery box according to any one of the embodiments described above.

The battery pack and battery box described above have the same advantages over the prior art and will not be described further here.

The additional aspects and advantages of the present application will be set forth in part in the following description, a portion of which will be apparent from the following description or may be learned through practice of the present application.

character list

• 1 ist eine schematische Ansicht der Struktur eines Batteriekastens gemäß einem Ausführungsbeispiel der vorliegenden Anmeldung;
• 2 ist eine schematische Ansicht der Struktur eines Gehäuses eines Batteriekastens gemäß einem Ausführungsbeispiel der vorliegenden Anmeldung;
• 3 ist eine schematische Ansicht der Struktur eines Gehäuses eines Batteriekastens gemäß einem Ausführungsbeispiel der vorliegenden Anmeldung (die Strömungsrichtung des Feuerluftstroms darstellt);
• 4 ist eine Explosionsansicht einer Feuerlöschkammer eines Batteriekastens gemäß einem Ausführungsbeispiel der vorliegenden Anmeldung (mit einem explosionssicheren Ventil);
• 5 ist eine schematische Ansicht der Struktur einer Feuerlöschkammer eines Batteriekastens gemäß einem Ausführungsbeispiel der vorliegenden Anmeldung (ohne explosionssicheres Ventil);
• 6 ist eine Draufsicht eines Batteriekastens gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;
• 7 ist eine Schnittdarstellung bei A-A der 6.

The above and/or additional aspects and advantages of the present application will become clear and easily understood from the description of the exemplary embodiments attached below with figures, in which:

• 1 12 is a schematic view of the structure of a battery box according to an embodiment of the present application;
• 2 12 is a schematic view of the structure of a casing of a battery box according to an embodiment of the present application;
• 3 Fig. 12 is a schematic view of the structure of a casing of a battery box according to an embodiment of the present application (representing the flow direction of fire airflow);
• 4 13 is an exploded view of a fire extinguishing chamber of a battery box according to an embodiment of the present application (with an explosion-proof valve);
• 5 12 is a schematic view of the structure of a fire extinguishing chamber of a battery box according to an embodiment of the present application (without an explosion-proof valve);
• 6 12 is a plan view of a battery box according to an embodiment of the present invention;
• 7 is a sectional view at AA of 6 .

Reference List

100

battery box

1

Housing

11

assembly chamber

12

fire drain hole

13

flow directing opening

14

Fire extinguishing flow channel

2

fire extinguishing chamber

21

spoiler channel

221

first spoiler

222

second spoiler

23

baffle plate

241

upper stop plate

242

lower stop plate

25

overflow channel

26

fire inlet opening

27

fire outlet

3

battery module

31

directed explosion discharge opening

4

explosion-proof valve

5

top cover

DETAILED DESCRIPTION

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numbers indicate the same or similar elements or elements having the same or similar functions. The exemplary embodiments described below with reference to the figures are exemplary and only serve to explain the present application and cannot be understood as limiting the present application.

A battery box 100 according to an embodiment of the present application is described below with reference to FIG 1 until 7 described, wherein a spoiler duct 21 is integrated in a fire extinguishing chamber 2 of the battery box 100, the spoiler duct 21 disturbing the thermally uncontrollable flow of fire air in the fire extinguishing chamber 2 in order to reduce the flow rate of the thermally uncontrollable flow of fire air. In this way, when the thermally uncontrollable fire airflow in the fire extinguishing chamber 2 flows to the explosion-proof valve 4, the thermally uncontrollable fire airflow does not cause the problem of excessive impact on the explosion-proof valve 4, and the safety of the battery box 100 is improved.

As in 1 , 2 and 3 shown, a battery box 100 according to an embodiment of the present application comprises: a housing 1 and a fire extinguishing chamber 2.

The housing 1 has, as in 2 shown, an assembly chamber 11, 12, the assembly chamber 11 is used for assembly of the battery module 3, wherein a fire extinguisher flow channel 14 is provided in a side wall of the housing 1, which is in communication with the assembly chamber 11, the inside of the side wall of the housing 1 is provided with a flow guide hole 13, which flow guide hole 13 connects the mounting chamber 11 with the fire extinguishing flow passage and the outside surface of the side wall of the housing 1 is further provided with a fire drain hole 12. Below it is to be noted that, as in 1 shown, two sets of battery modules 3 can be installed in the mounting chamber 11, with the two sets of battery modules 3 installed on both sides of the case 1, respectively, and with a fire extinguishing flow channel 14 provided in both side walls of the case 1, respectively, and wherein two fire extinguishing chambers 2 are arranged at one end of the housing 1, the two fire extinguishing flow channels 14 being spaced from each other and communicating with two fire extinguishing chambers 2, respectively, the fire drain openings 12 of the two fire extinguishing flow channels 14 corresponding to the directional explosion discharge opening 31 of the two sets of battery modules 3 are opposite, as shown in 3 is shown so that the thermally uncontrollable fire airflow generated by the two sets of battery modules 3 can enter the corresponding fire extinguishing chambers 2 through the two firefighting flow channels, respectively, to achieve the effect of dissipating the thermally uncontrollable airflow.

That is, the battery pack 3, after generating the high-temperature thermally uncontrollable fire airflow in the mounting chamber 11, can enter the fire-extinguishing flow passage 14 and, while flowing in the fire-extinguishing flow passage 14, the temperature gradually decreases and finally the thermally uncontrollable Fire air flow enters the fire extinguishing chamber 2 at the end of the casing 1, causing the thermally uncontrollable fire air flow to enter the fire extinguishing chamber 2 after a certain degree of cooling to achieve cooling and fire extinguishing treatment, eliminating the problem of secondary combustion caused by flames in the ejected Outside gas is caused is effectively avoided. As 1 12, the fire extinguishing chamber 2 is attached to the fire drain opening 12, the fire extinguishing chamber 2 having a fire inlet opening 26 and a fire outlet opening 27 communicating with each other, and it should be noted that the fire inlet opening 26 of the fire extinguishing chamber 2 communicates with the fire drain opening 12 . In this way, a thermally uncontrollable air flow in the fire extinguishing flow channel 14 can be discharged via the fire outlet opening 12 and enter the fire extinguishing chamber 2 from the fire inlet opening 26, and after lowering the temperature in the fire extinguishing chamber 2 and after fire extinguishing through the fire outlet opening 27 discharged from fire extinguishing chamber 2 will. Here is how in 4 shown, an explosion-proof valve 4 is arranged at a fire outlet port 27 of the fire extinguishing chamber 2, and the explosion-proof valve 4 can be opened when the air pressure in the fire extinguishing chamber 2 and the fire extinguishing flow channel 14 and the mounting chamber 11 is too high, resulting in timely explosion discharge plays a role, thereby ensuring a balanced state of the system internal pressure inside the battery box 100 .

As 7 shows, a spoiler duct 21 is provided in the fire extinguishing chamber 2, wherein the spoiler duct 21 can be designed as a meandering structure with several segments, and the spoiler duct 21 serves to establish a connection between the fire inlet opening 26 and the fire outlet opening 27. This means that the provision of a spoiler duct 21 inside the fire extinguishing chamber 2 causes multiple deflection and redirection of the thermally uncontrollable flow of fire air from the fire inlet opening 26 into the fire extinguishing chamber 2 through the spoiler duct 21, i.e. multiple buffering when the thermally uncontrollable flow of fire air enters into the fire extinguishing chamber 2 against the inner wall of the spoiler duct 21, so that the flow direction of the thermally uncontrollable fire air flow changes continuously, so that the flow speed decreases continuously and flows towards the fire outlet opening 27. Thus, deceleration, decompression, fire extinguishing of the flow of fire air or the like is realized by the spoiler duct 21 , thereby avoiding the problem that the exhaust gas may damage the explosion-proof valve 4 .

It should be noted that, as in 7 shown, in the fire extinguishing chamber 2, a spoiler duct 21 is formed. The inner wall of the spoiler duct 21 enhances heat transfer and increases the heat dissipation effect of the fire extinguishing chamber 2 on the high-temperature and high-speed gas and flame flow. At the same time, a wall effect is used (wall effect: combustion and explosion are not direct reactions between molecules, but are stimulated by external energy, the molecular bonds are destroyed and radicals are formed, with the radicals colliding with other molecules to produce new products and there are new radicals are also generated, which in turn react with other molecules.When collisions of the radicals with the channel walls are predominant, the radicals involved in the reaction decrease, the combustion reaction cannot proceed, and the flame propagation is prevented) around the contact and collision surface of the thermally uncontrollable fire air flow with the inner wall of the spoiler duct 21, and to reduce the radicals involved in the combustion reaction, thereby preventing flame propagation to some extent. After passing through the spoiler duct 21, the thermally uncontrollable fire air flow, after cooling and decelerating, enters the explosion-proof valve 4, and the thermally uncontrollable gas is discharged out of the system, where the explosion-proof valve 4 is installed toward the ground or other safety direction to ensure that the discharge of the thermally uncontrollable gas cannot cause a secondary combustion accident.

According to the battery box 100 of an embodiment of the present application, a directed delivery of the thermally uncontrollable fire air flow can be achieved, which ensures system pressure equalization within the battery box 100, and the thermally uncontrollable fire air flow in the fire extinguishing chamber 2 by providing the spoiler duct 21 in the fire extinguishing chamber 2 of the battery box 100 can be disturbed and delayed, whereby the air flow in the fire extinguishing chamber 2 does not cause a serious impact on the explosion-proof valve 4 when the air flow enters the explosion-proof valve 4, thereby improving the safety performance of the battery box 100.

In some exemplary embodiments, it is provided that a spoiler is provided in the fire extinguishing chamber 2 , the spoiler being directly opposite the fire inlet opening 26 in the inflow direction of the fire inlet opening 26 , and the spoiler serving to define the spoiler channel 21 . That is, the spoiler is located in the inflow direction of the fire inlet port 26. In this way, after the thermally uncontrollable flow of fire air enters the fire extinguishing chamber 2, the spoiler can block and guide the flow of thermally uncontrollable fire air. As in 7 shown, the thermally uncontrollable flow of fire air is slowed down and deflected under the influence of spoilers in a flow process, as a result of which the turbulence effect is achieved. It should be noted that the present application notes that the spoiler and the fire inlet opening 26 are directly opposite in the inflow direction of the fire inlet opening 26, which means that the projection of the spoiler in the inflow direction of the fire inlet opening 26 is directly opposite, that is, the Spoiler may be skewed in the inflow direction or perpendicular to the inflow direction, and it should be noted that the directly opposite setting mentioned in the continuation of this application can be understood as opposite projection, ie the spoiler can be positioned at an angle to the direction of inflow or perpendicular to the direction of inflow.

In some exemplary embodiments, it is provided that the spoiler comprises a first spoiler 221 and a second spoiler 222, the first spoiler 221 and the second spoiler 222 being arranged one behind the other in an inflow direction of the fire inlet opening 26, with the first spoiler being in the inflow direction of the fire inlet opening 26 221 and the second spoiler 222 are arranged alternately and form the spoiler duct 21 in a curved manner.

As in 7 As shown, the fire inlet port 26 is provided on a right side wall of the fire extinguishing chamber 2 and penetrates in the left-right direction, with the first spoiler 221 and the second spoiler 222 being spaced from each other in a left-right direction so that the thermally uncontrollable fire air flow sequentially flows through the first spoiler 221 and the second spoiler 222, wherein a height of the first spoiler 221 and the second spoiler 222 differs in a vertical direction. As in 7 shown, an upper end of the first spoiler 221 is higher than an upper end of the second spoiler 222, and a lower end of the first spoiler 221 is lower than an upper end of the second spoiler 222, and a lower end of the second spoiler 222 is lower than a lower end of the first spoiler 221, that is, in an inflow direction of the fire intake port 26, a lower end portion of the first spoiler 221 directly faces an upper end portion of the second spoiler 222, with an upper end portion of the first spoiler 221 offset from the second spoiler 222, and wherein a lower end portion of the second spoiler 222 is offset from the first spoiler 221.

In this way, as in 7 1, the thermally uncontrollable fire air flow, after entering the fire extinguishing chamber 2, first contacts the first spoiler 221 and flows downwards in the vertical direction under the action of the first spoiler 221, and the thermally uncontrollable fire air flow, after bypassing the first spoiler 221, to the flows through the second spoiler 222 and flows upward in the vertical direction under the action of the second spoiler 222 . In this way, it is achieved that the thermally uncontrollable flow of fire air is deflected and delayed several times after entering the fire extinguishing chamber 2, as a result of which the impact forces exerted on the explosion-proof valve 4 by the thermally uncontrollable flow of fire air are greatly reduced and the stability of the construction of the explosion-proof valve 4 is guaranteed.

In some exemplary embodiments it is provided that, as in 5 shown, the battery box 100 further comprises: a flow guide plate 23, wherein the first side wall of the fire extinguishing chamber 2 is directly opposite the fire outlet opening 27, as 5 shows, the first side wall is the upper side wall of the fire extinguishing chamber 2, the first side wall and the flow guide plate 23 are arranged opposite to each other, the fire inlet opening 26 is located between the first side wall and the flow guide plate 23, the first spoiler 221 and the second spoiler 222 is provided on the first side wall and the flow guide plate 23, respectively, and the first spoiler 221 extends towards the flow guide plate 23, the second spoiler 222 extends towards the first side wall, the flow guide plate 23 being the thermally uncontrollable Fire air flow serve as a guide to direct the thermally uncontrollable fire air flow together with the side wall of the fire extinguishing chamber 2 to the spoiler.

As 5 shows, inside the fire extinguishing chamber 2, the flow guide plate 23 is arranged, the flow guide plate 23 extends in the left-right direction to be parallel to the inflow direction of the fire inlet port 26, the right end of the flow guide plate 23 is fixed to the right side wall of the Fire chamber 2 is connected, with the fire inlet port 26 and the fire outlet port 27 located on both sides of the flow guide plate 23, the first spoiler 221 is provided on the upper side wall of the fire chamber 2 and extends downward to the spoiler 23, the second spoiler 222 is provided on an upper surface of the spoiler 23 and extends to an upper side wall of the fire extinguishing chamber 2 . In this way, the first spoiler 221, the second spoiler 222, the spoiler 23 and the upper side wall of the fire extinguishing chamber 2 together define a plurality of tortuous spoiler ducts 21.

At this time, an extension height of the first spoiler 221 and the second spoiler 222 in the vertical direction is the same, and a distance between a lower end of the first spoiler 221 and the flow guide plate 23 and a distance between the second spoiler 222 and an upper side wall of the fire extinguishing chamber 2 are the same are so that the turbulence effect created by the first spoiler 221 and the second spoiler 222 is equal, whereby it is advantageous to realize the superimposed turbulence effect on the thermally uncontrollable fire air flow.

In some embodiments it is provided that how 7 shows, in the fire extinguishing chamber 2, an overflow channel 25 is also provided with the overflow duct 25 and the spoiler duct 21 being located on both sides of the flow guide plate 23, respectively, and with the second side wall of the fire extinguishing chamber 2 lying directly opposite the fire inlet opening 26, the second side wall and the flow guide plate 23 being spaced apart and defining the overflow gap, the overflow gap serving to connect the overflow channel 25 to the spoiler channel 21 . As 5 shows, the second side wall is the left side wall of the fire extinguishing chamber 2.

As in 5 As shown, the fire inlet port 26 and the fire outlet port 27 are located at the top and bottom of the baffle plate 23, respectively, with the spoiler duct 21 being located at the top of the baffle plate 23 and communicating with the fire inlet port 26, and the overflow duct 25 located at the bottom side of the flow guide plate 23 and communicates with the fire outlet port 27, the flow guide plate 23 being spaced from the left side wall of the fire extinguishing chamber 2 and forming an overflow gap penetrating in the up and down direction, the overflow gap penetrating the spoiler duct 21 and the overflow duct 25 in the up- and down direction connects.

In this way, when the thermally uncontrollable flow of fire air flows in the fire extinguishing chamber 2, it first passes through the overflow duct 25 to achieve several tortuous deflections and delays to achieve the delay effect, and the thermally uncontrollable flow of fire air along the left side wall of the fire extinguishing chamber 2 after flows into the rear of the overflow duct 25 after flowing out of the overflow duct 25 to realize deflection and deceleration again, and the fire airflow continues to flow along the overflow duct 25 toward the fire extinguishing port, causing multiple deflections, deceleration and a long-stroke flow of the thermally uncontrollable Fire air flow can be achieved, thereby greatly reducing the impact force that occurs when flowing into the explosion-proof valve 4, and the safety of the battery box 100 is improved.

In some exemplary embodiments it is provided that the first side wall and the flow guide plate 23 are each provided with stop plates which project towards one another, such as FIG 5 12, with the first spoiler 221 fixedly mounted on a stop plate of the flow guide plate 23, with the second spoiler 222 fixedly mounted on a stop plate of the first side wall. As 5 1, the upper side wall of the fire extinguishing chamber 2 is provided with a top stopper plate 241 protruding downward, and the top surface of the flow guide plate 23 is provided with a bottom stopper plate 242 protruding upward, with the first spoiler 221 mounted on the top stopper plate 241 and wherein the first spoiler 221 is fitted adjacent to the left side surface of the upper stop plate 241, the second spoiler 222 is mounted to the lower stop plate 242, and the second spoiler 222 is fitted to the right side surface of the lower stop plate 242 connected is.

Here, the first spoiler 221 and the second spoiler 222 are each welded to an associated stopper plate, so that the first spoiler 221 and the second spoiler 222 are stably installed in the fire extinguishing chamber 2 to prevent the first spoiler 221 and the second spoiler 222 tear off under the impact of the thermally uncontrollable flow of fire air, thereby improving the stability of the fire extinguishing chamber 2.

In some embodiments, it is contemplated that a plurality of first spoilers 221 and a plurality of second spoilers 222 are respectively provided, and the plurality of first spoilers 221 and the plurality of second spoilers 222 are arranged alternately in an inflow direction of the fire inlet port 26 .

By providing multiple first spoilers 221 and multiple second spoilers 222, an overall length of a spoiler duct 21 can be lightened, and the number of bends in the spoiler duct 21 is increased to increase the number of deflections in the thermally uncontrollable fire air flow, thereby reducing the impact on the delay of the thermally uncontrollable fire air flow is increased. As in 5 shown, two first spoilers 221 and two second spoilers 222 are provided, and the upper end of the second spoiler 222 on the right-hand side projects between the two first spoilers 221 in the inflow direction of the fire inlet opening 26, and the lower end of the first spoiler 222 on the The spoiler 221 lying on the left protrudes between the two second spoilers 222.

In this way, the two first spoilers 221, the two second spoilers 222 and the left side wall and the right side wall of the fire extinguishing chamber 2 together delimit a multi-segment curved spoiler duct 21. When the thermally uncontrollable fire air flow flows in the fire extinguishing chamber 2, it flows through the five gaps in an “S” shape, realizing multiple diversions and effectively slowing down the flow rate of the thermally uncontrollable fire air stream. It should be noted that the array type, array angles, pitches and number of arrays Gen of the spoiler are mainly based on the requirements for thermal runaway and depressurization of the system and whether the turbulence effect is met, which is mainly based on thermal simulation and experience, and this application uses a four-piece spoiler arrangement of 90°, for example, and ensures that the cross-sectional areas of the Spoiler channels 21 are the same. In particular, in a practical arrangement of the first spoiler 221 and the second spoiler 222, the first spoiler 221 may be provided perpendicularly to the inflow direction and the second spoiler 222 may be provided obliquely to the inflow direction, or the second spoiler 222 may be provided perpendicularly to the inflow direction and the first Spoiler 221 can be provided at an angle to the inflow direction, or the first spoiler 221 and the second spoiler 222 can each be provided perpendicular to the inflow direction, or the first spoiler 221 and the second spoiler 222 can each be provided at an angle to the inflow direction, with the above-described arrangements each allow the spoiler to be swirled in relation to the flow of fire air.

In some embodiments, it is envisaged that a distance between the first spoiler 221 and two adjacent second spoilers 222 is equal, and a distance between a second spoiler 222 and two adjacent first spoilers 221 is equal. In this way, the space between any two adjacent spoilers acts equally on the turbulence created by the thermally uncontrollable flow of fire air.

In some exemplary embodiments it is provided that, as in 4 and 5 1, a plurality of mounting holes are provided at the fire outlet opening 27, and the explosion-proof valve 4 is fixed to the fire extinguishing chamber 2 via a connector penetrating through the mounting holes. It should be noted that the fire outlet 27 is provided on the lower side wall of the fire chamber 2, with the explosion-proof valve 4 mounted on the fire outlet 27 and located below the fire chamber 2, the lower side wall of the fire chamber is provided with four mounting holes. In this way, the explosion-proof valve is firmly mounted on the lower side wall of the fire-extinguishing chamber by four screw connections, so that the thermally uncontrollable fire air flow in the fire-extinguishing chamber 2 after the turbulence, extinguishing and cooling is exhausted from the explosion-proof valve 4.

The screw connection can be a mounting screw, and the explosion-proof valve 4 is mounted with the outer housing 1 of the fire extinguishing chamber 2 by means of mounting screws and meets the requirements for the tightness level IP67, and the entire fire extinguishing chamber 2 can be connected to the housing 1 by welding or bolting , which ensures the requirements for the IP67 tightness level.

The present application also provides a battery pack.

A battery pack according to an exemplary embodiment of the present application, equipped with a battery box 100 according to one of the exemplary embodiments described above, enables the thermally uncontrollable flow of fire air to be discharged in a directed manner, which ensures system pressure equalization within the battery box 100, and the thermally uncontrollable flow of fire air in the fire extinguishing chamber 2 through Provision of the spoiler duct 21 in the fire extinguishing chamber 2 of the battery box 100 can be disturbed and delayed, whereby the air flow in the fire extinguishing chamber 2 does not cause a serious impact on the explosion-proof valve 4 when the air flow enters the explosion-proof valve 4, thereby improving the safety performance of the battery box 100 is improved.

• 1) nach dem thermischen Durchgehen der Batterie sollte der Innendruck im Batteriesystem ausgeglichen werden, und die Anforderungen an die Systemdruckentlastungskonstruktion sollten erfüllt werden.
• 2) es kann die Nachfrage nach der Wärmeableitung und dem Löschen des Feuers des Hochtemperaturflammengases mit thermischem Durchgehen verwirklichen und somit das Problem der Sekundärverbrennung, die durch die durch das Abgas nach außen verursachte Flamme verursacht wird, vermeiden.
• 3) die Feuerlöschkammer 2 ist so gestaltet, dass die Abgasrichtung des Gases mit thermischem Durchgehen gesteuert wird, um die Richtung des Abgases zum Boden oder zu einem anderen Sicherheitsbereich zu steuern, um Unfälle, wie z.B. das Verbrennen, zu vermeiden.
• 4) die Feuerlöschkammer 2 ist so gestaltet, dass sie einen thermisch unkontrollierbaren Feuerluftstrom verwirbeln kann, wobei ein Spoilerkanal 21, der aus einem im Voraus angeordneten Spoiler ausgebildet ist, verwendet wird, um die Temperatur zu senken, zu verlangsamen, den Druck zu verringern, um die große Stoßkraft auf das explosionssichere Ventil 4 zu reduzieren.
• 5) Die Feuerlöschkammer 2 ist mit einer Strömungsleitplatte 23 ausgebildet, die das thermisch unkontrollierbare Gas stören und verhindern, dass der abgelassene Hochtemperatur-Feuerluftstrom direkt auf das explosionssichere Ventil 4 trifft und austritt.
• 6) Es wird ein völlig neues Feuerlöschkonzept bereitgestellt, wobei der Feuerlösch-Spoilerkanal 21 durch die Konfiguration des Spoilers gebildet wird, ohne dass komplexe Feuerlöschformen wie Feuerlöscher erforderlich sind, um die Anforderungen zum Löschen von thermisch unkontrollierbarem Feuerluftstrom in der Batterie und zum Ausgleich des Systemluftdrucks zu erfüllen, und die Struktur ist einfach, die Verarbeitungskosten sind niedrig und das Feuerlöschen ist effektiv.

Here, the battery pack of the present application is provided with the following technical advantages by providing the battery box 100 described above:

• 1) after the battery thermal runaway, the internal pressure in the battery system should be equalized, and the system pressure relief design requirements should be met.
• 2) It can realize the demand for the heat dissipation and extinguishing the fire of the high-temperature flame gas with thermal runaway, thus avoiding the problem of secondary combustion caused by the flame caused by the exhaust gas to the outside.
• 3) the fire extinguishing chamber 2 is designed to control the exhaust direction of thermal runaway gas to control the direction of exhaust gas to the ground or other safety area to avoid accidents such as burning.
• 4) the fire-extinguishing chamber 2 is designed so that it can swirl a thermally uncontrollable flow of fire air, using a spoiler duct 21 formed from a pre-arranged spoiler to lower the temperature, slow down, reduce the pressure, for the great impact to reduce to the explosion-proof valve 4.
• 5) The fire-extinguishing chamber 2 is designed with a flow baffle plate 23, which will disturb the thermally uncontrollable gas and prevent the discharged high-temperature fire air flow from directly hitting the explosion-proof valve 4 and escaping.
• 6) A whole new fire extinguishing concept is provided, with the fire extinguishing spoiler duct 21 formed by the configuration of the spoiler, without the need for complex fire extinguishing forms such as fire extinguishers, to meet the requirements for extinguishing thermally uncontrollable fire airflow in the battery and balancing the system air pressure to meet, and the structure is simple, the processing cost is low, and the fire extinguishing is effective.

It should be noted that in the discussion of the present application, directional or positional relationships are identified with terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "top", " bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counter clockwise", "axial", "radial", "in the circumferential direction", etc. are based on the directional or positional relationships illustrated in figures. They only serve to explain the present application and to facilitate the explanation. They do not indicate or imply that the devices or elements depicted have any particular orientation or are intended to be constructed and operated in any particular direction. Because of this, cannot be understood as a limitation for the present application.

In the explanation of the present application, “first feature”, “second feature” may include one or more of the features.

In the explanation of the present application, "plural" means 2 or more than 2.

In the explanation of the present application, the fact that the first feature is “above” or “below” the second feature can mean both that the first and second features are in direct contact and that the first and second features are not are in direct contact, rather they are in contact through some other feature.

In the explanation of the present application, when the first feature is "above the second feature" "above the second feature" or "on top of the second feature" it means that the first feature is directly above or diagonally above the second feature , or the horizontal height of the first feature is greater than that of the second feature.

In the present description, the explanation in connection with the terminology “an exemplary embodiment”, “some exemplary embodiments”, “exemplary embodiments”, “example”, “specific example” or “some examples” refers to that which is associated with the exemplary embodiment or example-explained specific features, structures, materials, or features are included in at least one embodiment or example of the present application. In the present description, the schematic representations of the above terms do not necessarily refer to the same embodiment or the same example. Moreover, the specific features, structures, materials, or features discussed may be combined in any suitable manner in one or more embodiments or examples.

Although the embodiments of the present application are shown and explained, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made without departing from the spirit and spirit of the present application and the scope of the present application is defined by the claims and their equivalents is defined.

Claims (10)

Battery box (100), characterized in that this battery box comprises: a case (1), a fire extinguishing flow channel (14) being provided in a side wall of the case (1), and the side wall of the case (1) being further provided with a fire drain opening (12) communicating with a fire extinguishing flow channel (14); a fire extinguishing chamber (2), the fire extinguishing chamber (2) being attached to the fire outlet opening (12), the fire extinguishing chamber (2) having a fire inlet opening (26) and a fire outlet opening (27), and the fire extinguishing chamber (2) having a spoiler duct (21) is provided, wherein the spoiler duct (21) serves to establish a connection between the fire inlet opening (26) and the fire outlet opening (27). Battery box (100) after claim 1 , characterized in that in the fire extinguishing chamber (2) a spoiler is provided, the spoiler directly against the fire inlet opening (26) in the inflow direction of the fire inlet opening (26). overlies, and wherein the spoiler serves to define the spoiler duct (21). Battery box (100) after claim 2 , characterized in that the spoiler comprises a first spoiler (221) and a second spoiler (222), the first spoiler (221) and the second spoiler (222) being arranged one behind the other in an inflow direction of the fire inlet opening (26); the first spoiler (221) and the second spoiler (222) being arranged alternately in the inflow direction of the fire inlet opening (26) and forming the spoiler channel (21) in a curved manner. Battery box (100) after claim 3 , characterized in that the battery box also comprises: a flow guide plate (23), the first side wall of the fire extinguishing chamber (2) being located directly opposite the fire outlet opening (27), and the first side wall and the flow guide plate (23) being arranged opposite one another, wherein the fire inlet opening (26) is located between the first side wall and the flow guide plate (23), wherein the first spoiler (221) and the second spoiler (222) are provided on the first side wall and the flow guide plate (23), respectively, and wherein the first spoiler (221) extends towards the flow directing plate (23), the second spoiler (222) extending towards the first side wall. Battery box (100) after claim 4 , characterized in that an overflow duct (25) is also provided in the fire extinguishing chamber (2), the overflow duct (25) and the spoiler duct (21) being located on both sides of the flow guide plate (23), and the second side wall ( 26) of the fire extinguishing chamber (2) lies directly opposite the fire inlet opening (26), and wherein the second side wall and the flow guide plate (23) are spaced apart and define the overflow gap, the overflow gap for connecting the overflow channel (25) to the spoiler channel (21) serves. Battery box (100) after claim 4 or 5 , characterized in that the first side wall and the flow guide plate (23) are each provided with stop plates projecting towards one another, the first spoiler (221) being fixedly mounted on a stop plate of the flow guide plate (23), the second spoiler (222) being fixed mounted on a stop plate of the first side wall. Battery box (100) after claim 6 , characterized in that a distance between the first spoiler (221) and two adjacent second spoilers (222) is the same. Battery box (100) after claim 3 , characterized in that a plurality of first spoilers (221) and a plurality of second spoilers (222) are provided, respectively, and wherein the plurality of first spoilers (221) and the plurality of second spoilers (222) are arranged alternately in an inflow direction of the fire inlet port (26). . Battery box (100) after claim 1 , characterized in that a detachable explosion-proof valve (4) is attached to the fire outlet opening (27). Battery pack, characterized in that a battery box (100) according to one of Claims 1 until 9 is provided.

Images