A shell for new energy vehicle battery

Abstract

The present invention relates to a shell for a new energy vehicle battery in the field of new energy vehicle battery shells, comprising a bottom plate and a battery cover that are clamped together, the edges of the bottom plate and the battery cover are fixed by bolts, a battery compartment is arranged in the bottom plate, a liquid regulating part is arranged between two adjacent battery compartments, and a plurality of external cooling parts matching the battery compartments are installed on the battery cover; the battery compartment comprises a plurality of main compartments distributed at equal intervals, a hollow beam is connected between two adjacent main compartments; the external cooling part comprises a cooling plate matching the main compartments, a supporting beam matching the position of the hollow beam is connected between two adjacent cooling plates, conduits communicating with the hollow beam are installed at both ends of the supporting beam, a guide frame is connected between the plurality of supporting beams, and a guide channel is opened in the cooling plate; a liquid regulating part is fixedly connected to the battery cover, so as to facilitate cooling and isolating each battery pack, and facilitate comprehensive heat dissipation of the battery and centralized heat dissipation treatment of independent battery packs.

Description

Technical Field

[0001] The present invention relates to a new energy vehicle battery shell, and in particular to a new energy vehicle battery shell applied in the field of new energy vehicle battery shells. Background Art

[0002] The shell of new energy vehicle batteries is a key component to protect battery safety, and its characteristics directly affect the performance and life of the battery. At present, the common new energy vehicle battery shells on the market are mainly made of metal materials such as aluminum alloy, stainless steel or thermoplastic reinforced plastics.

[0003] In general, the battery shell of new energy vehicles needs to comprehensively consider multiple factors such as cost, weight, corrosion resistance, mechanical properties, high temperature resistance and aging resistance. At present, although a variety of materials have been used to manufacture battery shells, further research and development of new materials is still needed to meet the higher requirements of new energy vehicles for battery shells.

[0004] In order to solve the problem of heat dissipation in the battery case, a certain battery case in the market adopts a water cooling design and has a certain market share.

[0005] Chinese invention patent CN112968334B discloses an aluminum profile shell of a lithium battery of a new energy electric vehicle. A thermometer for detecting real-time temperature is installed inside the battery shell of the invention, and the thermometer uploads the measured temperature to the main control system of the electric vehicle, and sets the internal temperature of the battery shell to three levels, namely low, medium and high. In the low temperature range, the preliminary heat dissipation mechanism, the water cooling mechanism and the lifting mechanism are not started, and only the heat dissipation filtering mechanism is used to dissipate heat inside the battery. In the medium temperature range, the preliminary heat dissipation mechanism is started to increase the heat dissipation inside the battery. In the high temperature range, the water cooling mechanism and the lifting mechanism are started, and the battery is in contact with the water cooling mechanism, and the heat in the battery is accelerated by air cooling and water cooling.

[0006] Existing battery casings are prone to overheating or overcooling in high or low temperature environments, affecting battery performance and life. At the same time, the maintenance and replacement of battery casings are also relatively difficult, increasing maintenance time and costs. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing battery casing is prone to cause battery overheating in a high temperature environment, affecting battery performance and life. At the same time, the maintenance and replacement of the battery casing is also relatively difficult, increasing maintenance time and cost.

[0008] In order to solve the above problems, the present invention provides a housing for a new energy vehicle battery, comprising a bottom plate and a battery cover that are clamped to each other, the bottom plate and the battery cover are fixed at their edges by bolts, a battery compartment is arranged in the bottom plate, a liquid regulating part is arranged between two adjacent battery compartments, and a plurality of external cooling parts matching the battery compartments are installed on the battery cover;

[0009] The battery compartment includes a plurality of equally spaced main compartments, two adjacent main compartments are connected by a hollow beam, and a cooling channel is provided in the hollow beam;

[0010] The external cooling unit includes a cooling plate matched with the main cabin, a support beam matched with the position of the hollow beam is connected between two adjacent cooling plates, and the support beam is fixedly connected to the battery cover, and conduits communicating with the hollow beam are installed at both ends of the support beam, a guide frame is connected between the multiple support beams, and a plurality of stop valves matching the positions of the cooling plates are arranged on the guide frame, a guide channel is opened in the cooling plate, and the input end and output end of the guide channel are respectively connected to the two support beams;

[0011] The battery cover is fixedly connected with a liquid regulating part, and the input end and the output end of the flow guide frame are both connected with the liquid regulating part.

[0012] In the above-mentioned new energy vehicle battery casing, it is convenient to cool and isolate each battery pack, and it is convenient for comprehensive heat dissipation of the battery and centralized heat dissipation treatment of independent battery packs.

[0013] As a further improvement of the present application, an inspection hole matching the cooling plate is provided on the battery cover, a heat exchange plate is provided on the lower side of the cooling plate, a plurality of evenly distributed heat exchange strips are connected between the heat exchange plate and the cooling plate, a heat dissipation cover plate is installed in the inspection hole, and a plurality of heat conductive convex strips staggered with the heat exchange strips are provided on the heat dissipation cover plate.

[0014] As a further improvement of the present application, a movable frame is clamped at the lower end of the heat dissipation cover plate, and the movable frame slides between the two hollow beams. Two cavities arranged in parallel up and down are opened in the hollow beam. The cavity on the lower side serves as a cooling channel. A plurality of sliding holes are opened between the two cavities. A piston column is slidably arranged in the sliding hole. An L-connecting rod is installed on the piston column. The L-connecting rod extends to the outer wall of the hollow beam and is fixedly connected to the side end of the movable frame. A slot matching the L-connecting rod is opened at the side end of the cavity on the upper side.

[0015] As a further improvement of the present application, a three-way solenoid valve is installed at the input end of the support beam, and the three connecting ends of the three-way solenoid valve are respectively connected to the guide channel, the guide frame and the conduit.

[0016] As another improvement of the present application, the guide frame is C-shaped, the support beam is installed on the inner side of the guide frame, and the two ends of the support beam are respectively connected to the guide frame and the guide channel.

[0017] As another improved supplement of the present application, a monitoring system for monitoring the battery cover is also included, the monitoring system includes a processor, the processor is connected to a group management module, a monitoring module, a data processing module, a control module and an alarm module; the liquid regulating part is connected to a circulating liquid pump through an infusion tube;

[0018] A temperature sensor connected to the monitoring module signal is installed in the battery compartment, and a normal cooling mode and an emergency cooling mode are set in the control module; the normal cooling mode is used for unified cooling of multiple battery temperatures when the battery temperature in the main cabin is lower than the alarm temperature;

[0019] The emergency cooling mode is used for independent cooling of the battery when the battery temperature in the main cabin exceeds the warning temperature.

[0020] As another improved supplement of the present application, the group management module is used to manage multiple cooling groups for independent cooling of batteries in the main cabin. The cooling groups are composed of hollow beams, cooling plates and support beams at corresponding positions of the main cabin and temperature sensors in the main cabin.

[0021] As another improvement of the present application, the specific working process of the conventional cooling mode includes: regulating multiple electromagnetic three-way valves so that one end of the guide frame supplies liquid to the frontmost cooling plate, the input end of the other cooling plates is connected to the previous hollow beam, the output end is connected to the next hollow beam, the end hollow beam is connected to the guide frame, and the coolant passes through multiple cooling plates and hollow beams when the circulating liquid pump is working.

[0022] As another improvement of the present application, the specific working process of the emergency cooling mode includes: when the temperature sensor of any cooling group detects that the battery temperature has reached the alarm temperature, the electromagnetic three-way valve is regulated, and the two support beams in the cooling group are respectively connected to the two sides of the guide frame, and the input and output ends of the support beams at other positions are closed. The circulating liquid pump drives the coolant to flow only in the cooling group area corresponding to the main cabin that has reached the alarm temperature.

[0023] In summary, this solution is convenient for realizing overall or partial cooling of the battery with an external cooling unit; and can cooperate with the detection system to adjust the coordination of the external cooling unit and the liquid regulating unit according to the battery monitoring temperature, so as to accelerate the overall heat dissipation of the battery and the efficiency of independent centralized heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a stereogram of the first and second embodiments of the present application;

[0025] Figure 2 For this application Figure 1 The structural diagram at A in the middle;

[0026] Figure 3 It is a top view of the first and second embodiments of the present application;

[0027] Figure 4 This is a cross-sectional view of the bottom plate of the first and second embodiments of the present application;

[0028] Figure 5 This is a side sectional view of the second embodiment of the present application;

[0029] Figure 6 For this application Figure 5 Schematic diagram of the structure at B in FIG.

[0030] Figure 7 A partial cross-sectional view of the heat dissipation cover plate of the second embodiment of the present application;

[0031] Figure 8 This is a cross-sectional view of a hollow beam in the second embodiment of the present application;

[0032] Fig. 9 For this application Figure 8 Schematic diagram of the structure at C in FIG.

[0033] Fig.10 This is a working schematic diagram of the conventional cooling mode of the third embodiment of the present application;

[0034] Fig.11 This is a working schematic diagram of the emergency cooling mode of the third implementation mode of the present application;

[0035] Fig.12 This is a schematic diagram of the cooling liquid path in the normal cooling mode of the third embodiment of the present application;

[0036] Fig.13 This is a schematic diagram of the coolant path in the emergency cooling mode of the third embodiment of the present application.

[0037] Description of the numbers in the figure:

[0038] 1 bottom plate, 2 battery cover, 21 heat dissipation cover plate, 22 heat conductive convex strips, 23 movable frame, 3 battery compartment, 31 main compartment, 32 hollow beam, 33 L connecting rod, 4 liquid regulating part, 5 external cooling part, 51 cooling plate, 52 support beam, 53 guide frame, 54 guide channel, 55 heat exchange plate. DETAILED DESCRIPTION

[0039] The following is a detailed description of three implementation methods of the present application in conjunction with the accompanying drawings.

[0040] The first implementation method:

[0041] Figure 1-9As shown, a housing for a new energy vehicle battery includes a base plate 1 and a battery cover 2 that are clamped to each other, the edges of the base plate 1 and the battery cover 2 are fixed by bolts, a battery compartment 3 is arranged in the base plate 1, a liquid regulating part 4 is arranged between two adjacent battery compartments 3, and a plurality of external cooling parts 5 matching the battery compartments 3 are installed on the battery cover 2;

[0042] The battery compartment 3 includes a plurality of main compartments 31 that are equally spaced, and a hollow beam 32 is connected between two adjacent main compartments 31, and a cooling channel is provided in the hollow beam 32; the design of the hollow beam 32 can isolate the main compartments 31 on the one hand, and can store coolant on the other hand, so as to realize the cold isolation of the main compartments 31, so that when the battery in the main compartment 31 is overheated, it is not easy to affect other batteries;

[0043] The external cooling unit 5 includes a cooling plate 51 matched with the main cabin 31, a support beam 52 matched with the position of the hollow beam 32 is connected between two adjacent cooling plates 51, and the support beam 52 is fixedly connected to the battery cover 2, and both ends of the support beam 52 are installed with a conduit communicating with the hollow beam 32, and a guide frame 53 is connected between the multiple support beams 52, a guide channel 54 is opened in the cooling plate 51, and the input end and the output end of the guide channel 54 are respectively connected to the two support beams 52; a plurality of stop valves matching the position of the cooling plate 51 are arranged on the guide frame 53, and the stop valve is located between the two support beams 52; the stop valve is used to adjust the coolant path, and when the stop valve is closed, the coolant enters the support beam 52 on the input side of the stop valve;

[0044] The battery cover 2 is fixedly connected to the liquid regulating part 4, and the input end and the output end of the guide frame 53 are both connected to the liquid regulating part 4; a three-way solenoid valve is installed at the input end of the support beam 52, and the three connecting ends of the three-way solenoid valve are respectively connected to the guide channel 54, the guide frame 53 and the conduit. After the coolant enters the support beam 52, it flows into the cooling plate 51 or the hollow beam 32 through the three-way solenoid valve;

[0045] The guide frame 53 is C-shaped, and the support beam 52 is installed on the inner side of the guide frame 53. The two ends of the support beam 52 are respectively connected to the guide frame 53 and the guide channel 54. The input end and the output end of the guide frame 53 are connected to the liquid regulating part 4. The liquid regulating part 4 is provided with an input pipe and an output pipe communicating with the input end and the output end of the guide frame 53, and the input pipe and the output pipe are both provided with flow regulating valves. The liquid regulating part 4 is connected to an external circulating liquid pump, and the circulating liquid pump drives the internal coolant flow of the external cooling part 5 and the hollow beam 32;

[0046] In this solution, multiple cooling plates 51 are used to dissipate heat from the distributed battery packs in the main compartment 31. The coolant flows through the multiple cooling plates 51 in sequence, so that the multiple battery packs in the bottom plate 1 can be uniformly cooled.

[0047] In addition, the present solution also increases the coverage area of ​​the coolant when it flows through the main compartment 31 by setting the hollow beam 32, thereby ensuring the heat dissipation effect of the battery in the main compartment 31;

[0048] Furthermore, through the design of the guide frame 53 , the coolant is input and output through the support beams 52 on both sides of any cooling plate 51 , so that the single cooling plate 51 can be cooled centrally, thereby ensuring the centralized heat dissipation of the batteries in a single main compartment 31 .

[0049] The shell design for the new energy vehicle battery of this embodiment has not only a stable structure and good heat dissipation effect, but also convenient maintenance.

[0050] Second implementation method:

[0051] The components identical or corresponding to those in the first embodiment are marked with the same reference numerals as those in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0052] Figure 5-9 As shown, the battery cover 2 is provided with an inspection hole matching the cooling plate 51, a heat exchange plate 55 is provided on the lower side of the cooling plate 51, a plurality of evenly distributed heat exchange strips are connected between the heat exchange plate 55 and the cooling plate 51, a heat dissipation cover plate 21 is installed in the inspection hole, and a plurality of heat-conducting convex strips 22 staggered with the heat exchange strips are provided on the heat dissipation cover plate 21.

[0053] A movable frame 23 is clamped at the lower end of the heat dissipation cover 21, and the movable frame 23 slides between the two hollow beams 32. Two cavities arranged in parallel up and down are opened in the hollow beam 32. The cavity located on the lower side serves as a cooling channel. A plurality of sliding holes are opened between the two cavities. A piston column is slidably arranged in the sliding hole. An L-connecting rod 33 is installed on the piston column. The L-connecting rod 33 extends to the outer wall of the hollow beam 32 and is fixedly connected to the side end of the movable frame 23. A slot matching the L-connecting rod 33 is opened at the side end of the cavity located on the upper side.

[0054] In this embodiment, a heat exchange plate 55 and a heat dissipation cover plate 21 for heat exchange of the battery in the main compartment 31 are arranged on the lower side of the cooling plate 51. The heat dissipation cover plate 21 and the cooling plate 51 are both detachable. When it is necessary to inspect the battery in the main compartment 31, the heat dissipation cover plate 21 and the cooling plate 51 at the corresponding position can be removed separately, which is convenient for the maintenance of the separate battery power source.

[0055] The design of the heat dissipation cover plate 21 and the cooling plate 51 is easy to further improve the heat dissipation efficiency of the battery; the hollow beam 32 in this embodiment is configured as an upper and lower double cavity, and the lower cavity serves as a cooling channel for circulating the coolant;

[0056] When the heat dissipation efficiency of the battery needs to be improved, the input coolant flow rate increases. Since the diameters of the conduit holes at the input and output ends of the hollow beam 32 are fixed, the liquid level in the cooling channel rises, thereby lifting the piston column, thereby driving the L-type connecting rod 33 and the movable frame 23 to rise, and then the heat-conducting convex strip 22 is inserted between the two heat-exchange strips, so that the heat-conducting convex strip 22 and the heat-exchange strips are directly attached to each other for heat exchange;

[0057] When the heat dissipation efficiency of the battery is in the initial state, the movable frame 23 is in the initial state. At this time, the heat-conducting convex strip 22 and the heat-exchange strip exchange heat through the air between the heat-conducting convex strip 22 and the heat-exchange strip.

[0058] This embodiment greatly facilitates the maintenance of the battery power supply and improves the maintenance efficiency by providing a detachable heat dissipation cover plate 21 and a cooling plate 51 on the battery cover 2. At the same time, the design of the heat exchange plate 55 and the heat dissipation cover plate 21 further improves the heat dissipation efficiency of the battery and ensures the stable operation of the battery.

[0059] In this embodiment, when the battery is at a high temperature, the coolant flow rate is increased, and the linkage design of the movable frame 23 and the heat-conducting convex strip 22 is coordinated to achieve direct contact between the heat convex strip 22 and the heat exchange strip. The direct contact improves the heat exchange efficiency and increases the coolant flow rate, which facilitates the rapid cooling of the battery when the battery is at a high temperature. The initial state maintains a relatively low heat dissipation efficiency, which facilitates the battery to keep warm and prevents the battery from being overcooled.

[0060] This design of flexibly adjusting heat dissipation efficiency not only improves the performance stability of the battery, but also extends the battery life.

[0061] The third implementation method:

[0062] Figure 10-13 As shown, it also includes a monitoring system for monitoring the battery cover 2, the monitoring system includes a processor, the processor is connected to a group management module, a monitoring module, a data processing module, a control module and an alarm module; the liquid regulating part 4 is connected to a circulating liquid pump through an infusion tube;

[0063] A temperature sensor connected to the monitoring module signal is installed in the battery compartment 3, and a conventional cooling mode and an emergency cooling mode are set in the control module; the electromagnetic three-way valve, the mixed liquid pump, the stop valve and the flow regulating valve are all connected to the control module signal;

[0064] The normal cooling mode is used for unified cooling of multiple battery temperatures when the battery temperature in the main cabin is lower than the warning temperature;

[0065] The emergency cooling mode is used for independent cooling of the battery when the battery temperature in the main cabin exceeds the warning temperature.

[0066] The group management module is used to manage multiple cooling groups for independent cooling of batteries in the main cabin 31 . The cooling groups are composed of hollow beams 32 , cooling plates 51 and support beams 52 at corresponding positions of the main cabin 31 and temperature sensors in the main cabin 31 .

[0067] The specific working process of the conventional cooling mode includes: regulating multiple electromagnetic three-way valves so that one end of the guide frame 53 supplies liquid to the frontmost cooling plate 51, the input end of the other cooling plates 51 is connected to the previous hollow beam 32, the output end is connected to the next hollow beam 32, the end hollow beam 32 is connected to the guide frame 53, and the coolant passes through multiple cooling plates 51 and hollow beams 32 when the circulating liquid pump is working.

[0068] The specific working process of the emergency cooling mode includes: when the temperature sensor of any cooling group detects that the battery temperature has reached the alarm temperature, the electromagnetic three-way valve is adjusted, and the two support beams 52 in the cooling group are respectively connected to the two sides of the guide frame 53, and the input and output ends of the support beams 52 at other positions are closed. The circulating liquid pump drives the coolant to flow only in the cooling group area corresponding to the main compartment 31 that has reached the alarm temperature.

[0069] The temperature sensor built into the monitoring system of this embodiment can monitor the battery temperature in real time and transmit the data to the processor for analysis. The processor intelligently selects the cooling mode according to the preset temperature threshold and temperature change trend, and performs intelligent management of the cooling mode according to the temperature.

[0070] During intelligent management, the battery cooling work is refined through the group management module, and the cooling strategy is adjusted in real time according to the battery temperature. In the normal cooling mode, the coolant is evenly distributed among multiple cooling plates by uniformly regulating multiple electromagnetic three-way valves and stop valves to ensure the overall temperature stability of the battery pack. In the emergency cooling mode, the system can quickly locate the battery pack with excessive temperature and independently perform efficient cooling to effectively prevent the battery from overheating.

[0071] The control module of the monitoring system of this embodiment has precise control capabilities and can accurately control the opening and closing of the electromagnetic three-way valve and the working state of the circulating liquid pump. In the emergency cooling mode, the system can quickly adjust the flow path of the coolant to ensure that the coolant is directly delivered to the battery pack that needs to be cooled, thereby achieving precise control and efficient cooling.

[0072] In summary, this solution is convenient for realizing overall or partial cooling of the battery with an external cooling unit; and can cooperate with the detection system to adjust the coordination of the external cooling unit and the liquid regulating unit according to the battery monitoring temperature, so as to accelerate the overall heat dissipation of the battery and the efficiency of independent centralized heat dissipation.

[0073] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A housing for a new energy vehicle battery, comprising a base plate (1) and a battery cover (2) that are mutually engaged, wherein the base plate (1) and the battery cover (2) are fixed at their edges by bolts, and characterized in that: A battery compartment (3) is provided in the bottom plate (1), a liquid regulating portion (4) is provided between two adjacent battery compartments (3), and a plurality of external cooling portions (5) matching the battery compartments (3) are installed on the battery cover (2); The battery compartment (3) comprises a plurality of main compartments (31) distributed at equal intervals, a hollow beam (32) is connected between two adjacent main compartments (31), and a cooling channel is provided in the hollow beam (32); The external cooling unit (5) comprises a cooling plate (51) matched with the main cabin (31); a support beam (52) matched with the position of the hollow beam (32) is connected between two adjacent cooling plates (51); the support beam (52) is fixedly connected to the battery cover (2); both ends of the support beam (52) are provided with a conduit communicating with the hollow beam (32); a guide frame (53) is connected between the plurality of support beams (52); a plurality of stop valves matched with the position of the cooling plate (51) are arranged on the guide frame (53); a guide channel (54) is provided in the cooling plate (51); and the input end and the output end of the guide channel (54) are respectively connected to the two support beams (52); The battery cover (2) is fixedly connected to a liquid regulating portion (4), and the input end and the output end of the flow guide frame (53) are both connected to the liquid regulating portion (4); the battery cover (2) is provided with an inspection hole matching the cooling plate (51), a heat exchange plate (55) is provided on the lower side of the cooling plate (51), a plurality of evenly distributed heat exchange strips are connected between the heat exchange plate (55) and the cooling plate (51), a heat dissipation cover plate (21) is installed in the inspection hole, and a plurality of heat conduction convex strips (22) staggeredly distributed with the heat exchange strips are provided on the heat dissipation cover plate (21); A movable frame (23) is clamped at the lower end of the heat dissipation cover plate (21), and the movable frame (23) slides between the two hollow beams (32). Two cavities arranged in parallel up and down are provided in the hollow beam (32), and the cavity located at the lower side serves as a cooling channel. A plurality of sliding holes are provided between the two cavities, and piston rods are slidably provided in the sliding holes. An L-type connecting rod (33) is mounted on the piston rod. The L-type connecting rod (33) extends to the outer wall of the hollow beam (32) and is fixedly connected to the side end of the movable frame (23). A slot hole matching the L-type connecting rod (33) is provided at the side end of the cavity located at the upper side.

2. A new energy vehicle battery housing according to claim 1, characterized in that: A three-way solenoid valve is installed at the input end of the support beam (52), and three connecting ends of the three-way solenoid valve are respectively connected to the flow guide channel (54), the flow guide frame (53) and the conduit.

3. The housing for a new energy vehicle battery according to claim 1, characterized in that: The guide frame (53) is C-shaped, the support beam (52) is installed inside the guide frame (53), and two ends of the support beam (52) are respectively in communication with the guide frame (53) and the guide channel (54).

4. The new energy vehicle battery housing according to claim 1, characterized in that: Also included is a monitoring system for monitoring the battery cover (2), the monitoring system comprising a processor, the processor being connected to a group management module, a monitoring module, a data processing module, a control module and an alarm module; the liquid regulating part (4) is connected to a circulating liquid pump via a liquid infusion tube; A temperature sensor connected to the monitoring module signal is installed in the battery compartment (3), and a normal cooling mode and an emergency cooling mode are provided in the control module; the normal cooling mode is used for uniform cooling of multiple battery temperatures when the battery temperature in the main compartment is lower than the alarm temperature; The emergency cooling mode is used for independent cooling of the battery when the battery temperature in the main cabin exceeds the warning temperature.

5. The new energy vehicle battery housing according to claim 4, characterized in that: The group management module is used to manage a plurality of cooling groups for independently cooling batteries in a main compartment (31), wherein the cooling groups are composed of a hollow beam (32), a cooling plate (51) and a support beam (52) at corresponding positions of the main compartment (31) and a temperature sensor in the main compartment (31).

6. A new energy vehicle battery housing according to claim 5, characterized in that: The specific working process of the conventional cooling mode includes: regulating a plurality of electromagnetic three-way valves so that one end of the flow guide frame (53) supplies liquid to the frontmost cooling plate (51), the input ends of the other cooling plates (51) are connected to the previous hollow beam (32), the output ends are connected to the next hollow beam (32), the end hollow beam (32) is connected to the flow guide frame (53), and when the circulating liquid pump is working, the coolant passes through the plurality of cooling plates (51) and the hollow beam (32).

7. The new energy vehicle battery housing according to claim 5, characterized in that: The specific working process of the emergency cooling mode includes: when the temperature sensor of any cooling group detects that the battery temperature has reached the alarm temperature, the electromagnetic three-way valve is regulated, and the two support beams (52) in the cooling group are respectively connected to the two sides of the guide frame (53), and the input and output ends of the support beams (52) at other positions are closed, and the circulating liquid pump drives the coolant to flow only in the cooling group area corresponding to the main cabin (31) that has reached the alarm temperature.

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