Tray assembly for battery pack

Abstract

The invention discloses a tray assembly for a battery pack, and relates to the technical field of new energy automobiles, a battery tray, a temperature control unit, a fastening adjustment assembly and a fire-fighting suppression unit are provided, a protective top cover is arranged to realize comprehensive protection, two groups of automobile batteries are arranged in the center of the battery tray, fixing lugs on the periphery are stably arranged with rubber pads, and the temperature control unit is arranged in an internal flow guide cavity. A dustproof filter screen is arranged at the lower opening of the cavity; the protective top cover is connected with a tray through a rapid unlocking buckle, an overheating monitoring sensor at the lower end is attached to a battery, and the fastening adjusting assembly is linked through a transmission fluted disc and a synchronous gear disc in a connecting box, so that an adjusting screw rod drives a clamping arm to move and fix the battery, and the temperature control unit comprises a heat dissipation frame, a condensation pipeline and a wavy heat conduction plate. In the fire-fighting suppression unit, a fire extinguishing agent storage cabin on a protective top cover is connected with a pressure relief and collection box through a transmission pump and a pressure-resistant pipe, a box bottom diversion trench corresponds to a battery, an overheating sensor is linked with the transmission pump to extinguish fire emergently, and safe operation of the battery is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, in particular to a tray assembly for a battery pack. BACKGROUND

[0002] With the rapid development of the new energy vehicle industry, the battery pack as a core energy storage component, its bearing and protection structure, and the performance requirements of the tray assembly for the battery pack are increasingly improved. Currently, the tray assembly for the battery pack needs to meet three core requirements: first, stable bearing and fixing of multiple vehicle battery bodies to avoid displacement or poor contact of the battery due to vehicle driving bumping; second, precise temperature control of the battery during operation to prevent overheat or overcooling affecting the capacity and service life of the battery; third, emergency fire protection capability to deal with the risk of overheating or fire caused by battery short circuit, overcharge and other faults, and to ensure the safety of the whole vehicle. In the prior art, the mainstream tray assembly for the battery pack adopts a "functional split" design: the tray body only bears the basic bearing function, and needs to be used with independent battery fixing clamps, external heat dissipation devices (such as independent fans or heat sinks) and separate fire extinguishing modules (such as external fire extinguisher interfaces). Specifically, the existing tray fixes the battery through bolts or simple clamps, and needs to adjust the fixing components one by one, which is low in installation efficiency and poor in adaptability, and is difficult to be compatible with battery bodies of different sizes; in terms of temperature control, it mainly relies on passive heat conduction or independent fan cooling, without unified air circulation and filtration design, which is easy to cause heat dissipation efficiency to decay due to dust blockage, and cannot be intelligently adjusted according to the battery load; the fire protection is mostly designed in a rear-mounted manner, which needs to rely on remote alarm of the battery management system, and then manually start the external fire extinguishing device, which lags in emergency response, and the fire extinguishing agent is difficult to accurately cover the core heating area of the battery. However, the core deficiency of the prior art is the lack of "functional integration and collaborative design" for the tray assembly for the battery pack. The bearing, fixing, temperature control and fire protection functions of the existing tray assembly are scattered in independent components, which need to be installed and debugged separately, not only occupying more battery compartment space, resulting in a large overall size of the tray assembly and reducing the adaptability, but more importantly, there is no collaboration among the functions, for example, unstable battery fixation will exacerbate local heating, and independent temperature control devices cannot solve the problem of overheating in this area; in emergency fire protection, the independent fire extinguishing device cannot be matched with the battery fixing structure and the temperature control channel to achieve precise spraying, resulting in poor protection effect. This functional split design makes the existing tray assembly for the battery pack difficult to meet the development needs of new energy vehicles for "high stability, high safety and miniaturization" of the battery, and becomes a key bottleneck restricting the overall performance improvement of the battery pack. SUMMARY

[0003] The purpose of this invention is to provide a battery pack tray assembly to solve the problems in the prior art where the lack of "functional integration and collaborative design" in battery pack tray assemblies results in the load-bearing, fixing, temperature control, and fire protection functions being dispersed in independent components without collaborative linkage, thus occupying a large battery compartment space, having low adaptability, and poor battery operation stability and safety protection.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a battery pack tray assembly, comprising a battery tray, a temperature control unit, a fastening and adjustment assembly, and a fire suppression unit; Two sets of automotive battery bodies are arranged in the center inside the battery tray. The fastening and adjustment components are provided on both outer ends of the two sets of automotive battery bodies. The battery tray has flow guiding cavities at both ends. The temperature control unit is installed inside each flow guiding cavity. A protective top cover is attached to the upper end of the battery tray. The fire suppression unit is installed on the upper surface of the protective top cover.

[0005] Preferably, the outer surface of the battery tray is provided with fixing ears around its perimeter, and the lower end of each fixing ear is provided with a rubber pad; the inner wall of the lower end of the flow guide cavity is provided with openings, which are respectively provided with the two sets of automotive battery bodies, and dust filters are installed inside the openings; quick-unlocking buckles are provided on both sides of the outer end of the protective top cover, and the lower ends of the quick-unlocking buckles are movably connected to the two sides of the battery tray.

[0006] Preferably, the fastening and adjusting assembly includes a connecting box, adjusting screws, a synchronizing gear disk, a slider, and a clamping arm; four connecting boxes are provided, each fixedly connected to the inner wall of the center inside the battery tray. Slide grooves are respectively formed on opposite inner surfaces of the connecting boxes. Adjusting screws are provided at both ends of the center inside each connecting box. A synchronizing gear disk is connected to one opposite end of each adjusting screw. A slider is threaded onto the outer end of each adjusting screw. A clamping arm is fixedly connected to the front end of each slider. The front end of the clamping arm extends outward from the outer end of the connecting box through the slide groove, and the inner surface of the clamping arm is tightly fitted against the outer surface of the automotive battery body.

[0007] Preferably, a transmission gear plate is provided at the upper center of the inside of the connecting box, the lower end of the transmission gear plate meshes with the outer end of the synchronous gear plate, and the upper center of the transmission gear plate extends out of the upper outer end of the connecting box, and each is fixedly connected with a hexagonal adjusting tooth groove.

[0008] Preferably, ventilation slots are provided on both sides of the upper surface of the flow guide cavity, and dustproof covers are installed inside the ventilation slots. An electric sealing opening and closing module is installed in the center of the upper surface of the flow guide cavity. A connecting frame is fixedly connected to the center of the upper inner wall of the flow guide cavity. A micro servo motor is installed on the upper surface of both ends of the connecting frame. A centrifugal ventilation impeller is fixedly connected to the upper end of the micro servo motor. The centrifugal ventilation impellers are respectively located directly below the dustproof covers.

[0009] Preferably, the temperature control units are respectively located in the center of the two flow guiding cavities. Each set of temperature control units includes a heat dissipation frame, a fixed bracket, a precision filter plate, a condensation pipe, and a corrugated heat-conducting plate. The outer two sides of the heat dissipation frame are respectively connected to the fixed bracket, which is respectively connected to the inner walls of the two sides of the flow guiding cavity. The upper end of the heat dissipation frame is provided with a precision filter plate. The condensation pipe is fixedly installed in the center of the heat dissipation frame. Several corrugated heat-conducting plates are arranged and installed at the lower end of the heat dissipation frame.

[0010] Preferably, the upper end of the precision filter plate is positioned directly below the centrifugal ventilation impeller, the lower end of the corrugated heat-conducting plate is positioned above the dust filter, and a 5-10mm airflow buffer gap is left between the lower surface of the corrugated heat-conducting plate and the upper end of the dust filter.

[0011] Preferably, the fire suppression unit includes an extinguishing agent storage chamber, a distribution and transfer pump, a pressure relief collection box, and a spray guide channel; the extinguishing agent storage chamber is fixedly installed in the center of the upper surface of the protective top cover; two pressure relief collection boxes are provided and fixedly connected to both sides of the lower surface of the protective top cover, and the lower ends of the pressure relief collection boxes are respectively arranged corresponding to two car battery bodies; the outer ends of the two sides of the extinguishing agent storage chamber are respectively connected to the distribution and transfer pump, and the output ends of the distribution and transfer pump are respectively connected to the pressure relief collection box through pressure-resistant transfer pipes; a plurality of spray guide channels are arranged on the lower surface of the pressure relief collection box.

[0012] Preferably, an overheat monitoring sensor is installed at the center of the lower surface of the protective cover. The lower surface of the overheat monitoring sensor is attached to the adjacent sides of the upper surfaces of the two automotive battery bodies, and the overheat monitoring sensor is electrically connected to the distribution pump via a signal transmission line.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a synchronous transmission structure with four sets of fastening and adjusting components. Only a single hexagonal adjusting tooth groove needs to be rotated to achieve synchronous movement of the clamping arms on the same side, eliminating the need for individual adjustments and significantly improving installation efficiency. Simultaneously, the clamping arms can flexibly adjust the clamping spacing via screw transmission, accommodating two sets of automotive battery bodies of different widths. This ultimately results in a multi-point rigid fit and fixation effect. Combined with the rubber pad at the lower end of the fixing ear to buffer vibration, this completely solves the problems of "unstable fixation and poor adaptability" in existing technologies, ensuring that the battery remains stationary under bumpy and vibrating conditions and guaranteeing the stability of the electrical connection.

[0014] The wave-shaped heat-conducting plate of this invention has a significantly larger heat-conducting area than existing flat heat-conducting plates, which can quickly concentrate and conduct battery heat; the condenser pipe achieves active cooling, and together with the directional airflow formed by the centrifugal ventilation impeller, it constructs a closed loop of "heat conduction-cooling-airflow circulation"; the electric sealing opening and closing module can intelligently adjust the opening and closing degree of the ventilation slot according to the battery load and ambient temperature to avoid excessive heat dissipation at low temperatures; at the same time, the dust filter and the precision filter plate form "double filtration" to prevent dust from clogging the heat dissipation channel, effectively avoid battery capacity decay caused by abnormal temperature, and extend battery life.

[0015] This invention features an overheat monitoring sensor that is directly attached to the upper surface of the battery, enabling real-time detection of temperature anomalies. It is electrically connected to the distribution and transfer pump, resulting in an emergency response speed far exceeding the minute-level response of existing technologies. Two pressure relief collection boxes precisely correspond to the two battery groups, and the spray guide channels are distributed in an array, ensuring the extinguishing agent is directionally and evenly distributed across the battery surface. This avoids the problems of "dispersed spray and incomplete coverage" found in existing technologies, significantly improving extinguishing efficiency. After an emergency, the components can be opened simply by using the quick-release buckle on the protective top cover, without disassembling the tray. This allows for rapid replenishment of extinguishing agent and inspection of battery status, significantly improving maintenance efficiency, greatly reducing equipment downtime costs after an accident, and minimizing secondary damage to the battery pack caused by improper emergency handling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the protective top cover structure of the present invention; Figure 3 This is a schematic diagram of the fire suppression unit structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the battery tray of the present invention; Figure 5 This is a schematic diagram of the fastening and adjustment assembly structure of the present invention; Figure 6 This is a schematic diagram of the centrifugal ventilation impeller structure of the present invention; Figure 7 This is a schematic diagram of the temperature control unit structure of the present invention.

[0017] In the diagram: 1. Battery tray; 11. Fixing ear; 12. Dust filter; 2. Protective top cover; 21. Quick unlocking buckle; 3. Car battery body; 4. Temperature control unit; 41. Heat dissipation frame; 42. Fixing bracket; 43. Precision filter plate; 44. Condensation pipe; 45. Corrugated heat-conducting plate; 5. Fastening and adjusting assembly; 51. Connecting box; 52. Adjusting screw; 53. Synchronous gear plate; 54. Slider; 55. Clamping arm; 56. Transmission gear plate; 57. Hexagonal toothed groove; 6. Fire suppression unit; 61. Extinguishing agent storage chamber; 62. Distribution and transfer pump; 63. Pressure relief collection box; 64. Spray guide channel; 65. Overheat monitoring sensor; 7. Dustproof cover; 71. Electric opening and closing module; 72. Connecting frame; 73. Miniature servo motor; 74. Centrifugal ventilation impeller. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-7 As shown, the present invention provides a technical solution: a battery pack tray assembly, wherein the battery tray 1 is the core load-bearing structure, and the center of its interior is used to install two sets of automotive battery bodies 3, and the outer ends are connected to fixing ears 11 with rubber pads to achieve stable installation; the tray has flow guiding cavities at both ends, and the lower inner wall of the flow guiding cavity has an opening for installing a dust filter 12 corresponding to the battery body, and a temperature control unit 4 is installed in the cavity. The protective top cover 2 is attached to the upper end of the battery tray 1, and quick unlocking buckles 21 are provided on both sides of the outer end for easy opening and closing. A fire suppression unit 6 is installed on the upper surface, and an overheat monitoring sensor 65 is installed in the center of the lower end. There are four fastening and adjusting components 5, which are fixed to the inner central wall of the battery tray 1. Each component consists of a connecting box 51, adjusting screw 52, ​​synchronous gear disk 53, slider 54, clamping arm 55, transmission gear disk 56, and hexagonal adjusting groove 57. By rotating the hexagonal adjusting groove 57, the transmission gear disk 56 is driven to mesh with the synchronous gear disk 53, which in turn drives the adjusting screw 52 to drive the slider 54 to move the clamping arm 55 along the groove, thereby achieving tight clamping of the car battery body 3 and improving installation stability. The temperature control unit 4 is installed in two flow guide cavities. Each set includes a heat dissipation frame 41, a fixed bracket 42, a precision filter plate 43, a condenser pipe 44, and a corrugated heat-conducting plate 45. The heat dissipation frame 41 is connected to the inner wall of the flow guide cavity through the fixed bracket 42. The precision filter plate 43 is located directly below the centrifugal ventilation impeller 74 at the upper end of the flow guide cavity. The corrugated heat-conducting plate 45 is located at the upper end of the dust filter 12, and there is a 5-10mm airflow buffer gap between the two. At the same time, dust covers 7 are installed on both sides of the upper surface of the flow guide cavity, and an electric sealing opening and closing module 71 is installed in the center. A micro servo motor 73 is installed on the connecting frame 72 in the center of the inner wall. The upper end of the motor is connected to the centrifugal ventilation impeller 74. Through the cooperation of the temperature control unit and the ventilation structure, efficient temperature control is achieved. The fire suppression unit 6 includes a fire extinguishing agent storage chamber 61, a distribution and transfer pump 62, two pressure relief collection boxes 63, and a spray guide channel 64. The fire extinguishing agent storage chamber 61 is installed in the center of the upper surface of the protective top cover 2, and is connected to the distribution and transfer pump 62 on both sides. The output end of the transfer pump is connected to the pressure relief collection boxes 63 on both sides of the lower end of the protective top cover 2 through a pressure-resistant transfer pipe. The lower end of the pressure relief collection box 63 is provided with a spray guide channel 64 corresponding to the battery body. The overheat monitoring sensor 65 is electrically connected to the distribution and transfer pump 62. When the battery body is detected to be overheated, the distribution and transfer pump 62 can be triggered to deliver the fire extinguishing agent to the pressure relief collection box 63 and spray it accurately through the spray guide channel 64 to achieve fire suppression.

[0020] according to Figure 1 , Figure 2 and Figure 3As shown, the protective top cover 2 is the core structure for the upper protection and component support of the battery pack tray assembly. It is attached to the upper end of the battery tray 1, and quick-release buckles 21 are connected to the outer two sides of the surface. The lower ends of the quick-release buckles 21 are movably connected to the two sides of the battery tray 1, which can realize the convenient opening and closing of the protective top cover 2 and the battery tray 1. At the same time, the fire extinguishing agent storage chamber 61 of the fire suppression unit 6 is fixedly installed in the center of the upper surface of the protective top cover 2, and the two pressure relief collection boxes 63 of the fire suppression unit 6 are fixedly connected to the two sides of the lower surface. An overheat monitoring sensor 65 is also installed in the center of the lower surface. The lower surface of the overheat monitoring sensor 65 is attached to the adjacent sides of the upper surface of the two sets of automotive battery bodies 3, providing the basis for overheat monitoring of the fire suppression unit 6. The fire suppression unit 6, as the core structure for overheat protection of the battery body, is integrated into the protective top cover 2. It consists of the fire extinguishing agent storage chamber 61, the distribution and transfer pump 62, the two pressure relief collection boxes 63, and several spray nozzles. The system comprises a flow channel 64, wherein a distribution and transfer pump 62 is connected to the outer ends of both sides of the extinguishing agent storage chamber 61. The output end of the distribution and transfer pump 62 is connected to the pressure relief collection boxes 63 on both sides of the lower end of the protective top cover 2 through a pressure-resistant transfer pipe. The two pressure relief collection boxes 63 are respectively set to correspond to the two sets of car battery bodies 3, and several spray flow channels 64 are arranged on the lower surface of the pressure relief collection box 63. The overheat monitoring sensor 65 is electrically connected to the distribution and transfer pump 62 through a signal transmission line. When the overheat monitoring sensor 65 detects that the car battery body 3 is overheated, it will trigger the distribution and transfer pump 62 to start, and transport the extinguishing agent in the extinguishing agent storage chamber 61 to the pressure relief collection box 63 through the pressure-resistant transfer pipe. Then, it will be accurately sprayed onto the overheated car battery body 3 through the spray flow channels 64 at the lower end of the pressure relief collection box 63, realizing the fire suppression function. Combined with the real-time monitoring of the overheat monitoring sensor 65, it forms a precise, efficient and safe protection for the car battery body 3.

[0021] according to Figure 4 and Figure 5As shown, the fastening and adjusting assembly 5 is a core component in the battery pack tray assembly used to stably fix the two sets of automotive battery bodies 3. Four assemblies are provided, each fixedly connected to the inner wall of the center of the battery tray 1. Its structure includes a connecting box 51, adjusting screws 52, a synchronizing gear disk 53, a slider 54, a clamping arm 55, a transmission gear disk 56, and a hexagonal adjusting groove 57. The inner surfaces of the connecting box 51 have grooves on opposite sides, and adjusting screws 52 are provided at both ends of the inner center. The opposite ends of the adjusting screws 52 are... The connecting box 51 is connected to the synchronous gear disk 53, and the outer end of each is threadedly fitted with a slider 54. The front end of the slider 54 is fixedly connected to the clamping arm 55, and the front end of the clamping arm 55 extends out of the outer end of the connecting box 51 through the inside of the slide groove. The inner surface of the clamping arm 55 is tightly fitted to the outer end surface of the car battery body 3. The upper center of the connecting box 51 is also provided with a transmission gear disk 56. The lower end of the transmission gear disk 56 meshes with the outer end of the synchronous gear disk 53, and the upper center of the transmission gear disk 56 extends out of the upper outer end of the connecting box 51 and is fixedly connected to the hexagonal adjusting gear groove 57. In use, by rotating the hexagonal adjusting gear groove 57, the transmission gear disk 56 can be rotated. The transmission gear disk 56 further drives the meshing synchronous gear disk 53 to rotate, so that the adjusting screw 52 rotates synchronously, thereby driving the slider 54 to move along the slide groove of the connecting box 51. Finally, the clamping arm 55 clamps or releases the car battery body 3, ensuring that the car battery body 3 is stably installed in the battery tray 1 and avoiding the impact of shaking on the stability of use.

[0022] according to Figure 4 and Figure 6 As shown, the dust cover 7 is a protective component of the ventilation system of the guide cavity of the battery pack tray assembly. In order to prevent external impurities from entering the interior of the guide cavity and to ensure the normal operation of temperature control-related components, the dust cover 7 is installed on both sides of the upper surface of the guide cavity inside the battery tray 1, and is embedded in the ventilation slots opened on both sides of the upper surface of the guide cavity. From the spatial layout, a centrifugal ventilation impeller 74 is set directly below the dust cover 7. The impeller is installed on the connecting frame 72 in the center of the upper inner wall of the guide cavity through a micro servo motor 73, forming a longitudinal corresponding structure of "cover-impeller-temperature control unit". As a protective barrier for the ventilation slot, the dust cover 7 can prevent external dust, particles and other impurities from entering the interior of the guide cavity when the airflow is exchanged through the ventilation slot. This prevents impurities from adhering to or clogging the centrifugal ventilation impeller 74, precision filter plate 43 and condenser pipe 44 and other temperature control unit 4 components below, ensuring the airflow efficiency of the ventilation system and the heat dissipation and temperature control reliability of the temperature control unit, and providing environmental protection for the stable operation of the car battery body 3.

[0023] according to Figure 6 and Figure 7As shown, the temperature control unit 4 is the core component responsible for temperature regulation of the automotive battery body 3 in the battery pack tray assembly. The temperature control unit 4 is respectively set in the center of the two flow guiding cavities inside the battery tray 1. Each set of temperature control units 4 includes a heat dissipation frame 41, a fixing bracket 42, a precision filter plate 43, a condenser pipe 44, and several corrugated heat-conducting plates 45. The outer two sides of the heat dissipation frame 41 are respectively connected to the fixing bracket 42, which is respectively connected to the inner walls of the two sides of the flow guiding cavity to realize the fixed installation of the temperature control unit 4. The upper end of the heat dissipation frame 41 is provided with a precision filter plate 43, the condenser pipe 44 is fixedly installed in the center of the heat dissipation frame 41, and the lower end of the heat dissipation frame 41 is arranged with corrugated plates 45. The upper end of the uniform temperature heat conduction plate 45 and the precision filter plate 43 are respectively positioned below the centrifugal ventilation impeller 74 inside the flow guide cavity. The lower end of the wave-shaped uniform temperature heat conduction plate 45 is respectively positioned above the dust filter 12 inside the lower opening of the flow guide cavity. A 5-10mm airflow buffer gap is left between the lower surface of the wave-shaped uniform temperature heat conduction plate 45 and the upper surface of the dust filter 12. The wave-shaped uniform temperature heat conduction plate 45 can conduct the heat generated by the car battery body 3 to the heat dissipation frame 41. The condenser pipe 44 cools the heat. At the same time, the airflow driven by the centrifugal ventilation impeller 74 is filtered by the precision filter plate 43 to form an efficient airflow circulation, thereby achieving precise temperature control of the car battery body 3 and ensuring the stability of battery operation.

[0024] The overall effect achieved by the organization is as follows: The initial installation and securing process begins by connecting the battery tray 1 to an external mounting structure (such as a car battery compartment) via the fixing ears 11 around its outer perimeter. Rubber pads at the lower ends of the fixing ears 11 cushion external vibrations, preventing direct rigid contact between the tray and the mounting structure, and enhancing the overall stability of the tray. Next, two sets of car battery bodies 3 are placed correspondingly in the central area inside the battery tray 1. The operator uses a tool to rotate the hexagonal adjusting groove 57 on the upper end of the connecting box 51 in the fastening and adjusting assembly 5, causing the transmission gear 56 fixedly connected to it to rotate. The lower end of the transmission gear 56 meshes with the synchronous gear 53 inside the connecting box 51. The synchronous gear disk 53 rotates with the transmission gear disk 56 and drives the adjusting screws 52 at both ends to rotate synchronously. The slider 54 at the outer end of the adjusting screw 52 moves towards the battery body along the sliding groove on the inner side of the connecting box 51 due to the threaded connection relationship. This pushes the clamping arm 55 at the front end of the slider 54 out of the connecting box 51 until the inner surface of the clamping arm 55 of the four sets of fastening adjustment components is tightly attached to the outer ends of the two sets of automotive battery bodies 3 on both sides, thus achieving rigid fixation of the battery body. Finally, the protective top cover 2 is attached to the upper end of the battery tray 1. The quick unlocking buckles 21 on both sides of the outer end of the protective top cover 2 are movably connected to the surface of both sides of the battery tray 1, thus completing the overall sealing of the component. After initial installation and fixation, the components enter the daily operation phase. Precise temperature control is achieved through the linkage between the temperature control unit 4 and the ventilation structure of the air guide cavity. The heat generated by the car battery body 3 during operation is conducted upward through the dust filter 12 (which prevents dust around the battery from entering the air guide cavity) at the lower opening of the air guide cavity of the battery tray 1, and acts on the wave-shaped heat-conducting plate 45 of the temperature control unit 4. A 5-10mm airflow buffer gap is left between the lower end of the wave-shaped heat-conducting plate 45 and the upper end of the dust filter 12, which avoids heat conduction loss and provides airflow space. Its wave-shaped structure increases the heat conduction area and quickly concentrates the dispersed heat to the heat dissipation frame 41. The condenser pipe 44 in the center of the heat dissipation frame 41 is activated, and the heat is cooled by the circulation of coolant in the pipe. At the same time, the micro servo motor 73 on the connecting bracket 72 on the upper inner wall of the air guide cavity is activated, driving the centrifugal ventilation at the upper end. The impeller 74 rotates to generate airflow from top to bottom. External air enters the guide cavity after being initially filtered by the dust cover 7 in the ventilation slots on both sides of the upper surface of the guide cavity to block external dust particles. It is then transported downward by the centrifugal ventilation impeller 74. After secondary filtration by the precision filter plate 43 at the upper end of the temperature control unit 4 (to prevent tiny impurities from adhering to the condenser pipe 44), it passes through the heat dissipation frame 41 and contacts the condenser pipe 44, carrying away the low-temperature airflow. The low-temperature airflow continues to flow downward through the buffer gap between the wave-shaped heat-conducting plate 45 and the dust filter 12, directly acting on the surface of the car battery body 3 to achieve heat exchange. The airflow carrying heat is finally discharged through the guide cavity or the gaps around the battery tray 1, forming a temperature control closed loop. The electric sealing opening and closing module 71 in the center of the upper surface of the guide cavity can adjust the opening and closing degree of the ventilation slot according to the battery operating load and ambient temperature to ensure that the battery is at a suitable operating temperature. When the vehicle battery body 3 experiences overheating and fire risk due to a fault (such as short circuit or overcharging), the component enters an abnormal emergency phase. The overheat monitoring sensor 65 (attached to the adjacent side of the upper surface of the two battery sets) at the center of the lower surface of the protective cover 2 monitors the battery temperature in real time. When the temperature exceeds the preset safety threshold, the overheat signal is transmitted to the distribution pump 62 of the fire suppression unit 6 via the signal transmission line. The distribution pump 62 immediately starts and draws fire extinguishing agent from the fire extinguishing agent storage chamber 61 at the center of the upper surface of the protective cover 2, and transmits it through the pressure-resistant transmission pipe at the output end. (Ensure no high pressure leakage) The pressure relief collection boxes 63 on both sides of the lower end of the protective top cover 2 are directionally conveyed. The two pressure relief collection boxes 63 correspond to the two sets of batteries respectively. After the fire extinguishing agent enters, it is buffered and diverted in the internal chamber and sprayed evenly and accurately onto the surface of the overheated battery through the spray guide channels 64 arranged at the lower end. This achieves rapid cooling, oxygen isolation, suppression of fire or extinguishing of initial fire. After the emergency, the operator can open the protective top cover 2 through the quick unlocking buckle 21 to check the battery status and fire unit wear (such as replenishing fire extinguishing agent). After maintenance, the top cover can be closed to restore operation.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tray assembly for a battery pack, characterized in that: The battery tray (1), the temperature control unit (4), the fastening adjustment assembly (5) and the fire suppression unit (6) are included. The battery tray (1) is internally centrally arranged with two groups of automobile battery bodies (3), and the two sides of the two groups of automobile battery bodies (3) are provided with the fastening adjustment assembly (5). The inside of the battery tray (1) is provided with a flow guide cavity at both ends, and the flow guide cavity is internally provided with the temperature control unit (4). The upper end of the battery tray (1) is attached with a protective top cover (2), and the upper surface of the protective top cover (2) is provided with the fire suppression unit (6).

2. The tray assembly for a battery pack of claim 1, wherein: The outer surface of the battery tray (1) is connected with a fixing lug (11) around, and the lower end of the fixing lug (11) is connected with a rubber pad. The inside of the flow guide cavity is provided with an opening in the lower end of the inner wall, and the opening is correspondingly provided with the two groups of automobile battery bodies (3). The opening is internally provided with a dust filter screen (12). The outer sides of the protective top cover (2) are connected with quick unlocking buckles (21), and the lower end of the quick unlocking buckle (21) is movably connected with the two sides of the battery tray (1).

3. The tray assembly for a battery pack of claim 1, wherein: The fastening adjustment assembly (5) includes a connecting box (51), an adjusting screw (52), a synchronous gear disc (53), a sliding block (54) and a clamping arm (55). The connecting box (51) is provided with four, which are fixedly connected to the inner wall of the battery tray (1) in the center. The inner side of the connecting box (51) is provided with a sliding groove on the opposite surface. The adjusting screw (52) is provided at both ends of the connecting box (51) in the center. The opposite end of the adjusting screw (52) is connected with the synchronous gear disc (53). The outer end of the adjusting screw (52) is threadedly sleeved with the sliding block (54). The front end of the sliding block (54) is fixedly connected with the clamping arm (55). The front end of the clamping arm (55) extends out of the outer end of the connecting box (51) through the sliding groove, and the inner side surface of the clamping arm (55) is tightly attached to the outer end surface of the automobile battery body (3).

4. The tray assembly for a battery pack of claim 3, wherein: The connecting box (51) is provided with a transmission gear disc (56) in the center of the upper end. The lower end of the transmission gear disc (56) is engaged with the outer end of the synchronous gear disc (53). The upper end of the transmission gear disc (56) extends out of the upper end of the connecting box (51), and is fixedly connected with a hexagonal adjusting tooth groove (57).

5. The tray assembly for a battery pack of claim 1, wherein: The upper surface of the flow guide cavity is provided with a ventilation groove on both sides. The ventilation groove is internally provided with a dustproof cover (7). The upper surface of the flow guide cavity is centrally provided with an electric sealing opening and closing module (71). The upper surface of the connecting frame (72) is provided with a micro servo motor (73) at both ends. The upper end of the micro servo motor (73) is fixedly connected with a centrifugal ventilation impeller (74), which is arranged below the dustproof cover (7).

6. The tray assembly for a battery pack of claim 1, wherein: The temperature control units (4) are respectively arranged in the inner center of the two flow guide cavities, each group of the temperature control units (4) comprises a heat dissipation frame (41), a fixed support (42), a precision filter screen (43), a condensation pipeline (44) and a wave-shaped uniform temperature heat conducting plate (45), the outer end of the heat dissipation frame (41) is respectively connected with the fixed support (42), the fixed support (42) is respectively connected to the inner wall of the two sides of the flow guide cavity, the upper end of the heat dissipation frame (41) is provided with the precision filter screen (43), the inner center of the heat dissipation frame (41) is fixedly installed with the condensation pipeline (44), and the lower end of the heat dissipation frame (41) is arranged with a plurality of wave-shaped uniform temperature heat conducting plates (45).

7. The tray assembly for a battery pack of claim 6, wherein: The upper end of the precision filter screen (43) is correspondingly arranged directly below the centrifugal ventilation impeller (74), the lower end of the wave-shaped uniform temperature heat conducting plate (45) is correspondingly arranged at the upper end of the dustproof filter screen (12), and a 5-10mm airflow buffer gap is left between the lower end surface of the wave-shaped uniform temperature heat conducting plate (45) and the upper end of the dustproof filter screen (12).

8. The tray assembly for a battery pack of claim 1, wherein: The fire extinguishing unit (6) comprises a fire extinguishing agent storage cabin (61), a distribution transmission pump (62), a pressure relief aggregate box (63) and a jet guide groove (64), the fire extinguishing agent storage cabin (61) is fixedly installed on the upper surface of the protective top cover (2), the pressure relief aggregate box (63) is provided with two and is fixedly connected to the lower end surface of the protective top cover (2) on both sides, and the lower end of the pressure relief aggregate box (63) is correspondingly arranged with the two automobile battery bodies (3); the both sides of the fire extinguishing agent storage cabin (61) are respectively connected with the distribution transmission pump (62), the output end of the distribution transmission pump (62) is connected with the pressure relief aggregate box (63) through the pressure-resistant transmission pipe, and the lower end surface of the pressure relief aggregate box (63) is arranged with a plurality of jet guide grooves (64).

9. The tray assembly for a battery pack of claim 8, wherein: The overheat monitoring sensor (65) is arranged on the lower end surface of the protective top cover (2), is attached to the adjacent side of the upper surface of the two automobile battery bodies (3), and is electrically connected with the distribution transmission pump (62) through the signal transmission line.

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