Modularized heat dissipation frame of energy storage battery module

Abstract

The invention relates to a modular heat dissipation frame of an energy storage battery module, which comprises a battery box, a modular battery cell assembly is arranged in the battery box, ventilation slots are formed in two sides of the surface of the battery box, dustproof nets are arranged in the ventilation slots, and a control box is arranged on the surface of the battery box and located on the side of the ventilation slots. The left end of the battery box is provided with two cooling liquid circulating interfaces, the two cooling liquid circulating interfaces are respectively used for inputting and outputting cooling liquid, one side of the interior of the battery box is provided with a ventilation fan, and the ventilation fan is movably connected with the battery box through a displacement assembly; the displacement assembly is used for driving the ventilation fan to move transversely; the modularized battery cell assembly comprises two battery cell modules which are symmetrically arranged; the liquid cooling plate is arranged between the two battery cell modules, the protruding ribs are attached to the clamping bases and matched with the limiting frames to divide cooling liquid and optimize flow channels of the cooling liquid, a multi-flow-channel structure is achieved, and heat dissipation of the liquid cooling plate is more uniform.

Description

Technical Field

[0001] This invention relates to the field of energy storage battery heat dissipation technology, and in particular to a modular heat dissipation frame for an energy storage battery module. Background Technology

[0002] Wind and solar power generation is significantly affected by the environment, resulting in intermittent and fluctuating power output, often leading to unstable power output and impacting grid reliability. Therefore, energy storage stations can be built concurrently with wind and solar power plants to balance power supply and demand and achieve peak shaving and valley filling. Energy storage stations can store energy during periods of surplus wind and solar power generation (such as peak solar power generation during the day) and release it during peak demand or off-peak periods, relieving grid pressure and achieving peak shaving and valley filling. Simultaneously, they can participate in the electricity market through price differentials, improving economic efficiency. Currently, various energy storage methods exist (such as pumped hydro storage, electrochemical energy storage, and flywheel energy storage), but electrochemical energy storage (mainly through energy storage batteries) is widely used in conventional energy storage station construction. Its advantages include high flexibility, rapid response to charging and discharging needs, suitability for small and medium-sized wind and solar power plants, and a stable charging and discharging process, effectively mitigating fluctuations in wind and solar power generation and ensuring stable power output.

[0003] Energy storage battery modules are composed of multiple highly consistent cells connected in series and parallel, and integrate components such as BMU and wiring harness. During charging and discharging, they generate a lot of heat. If heat dissipation is not timely, it may lead to uneven temperature distribution, performance degradation, or even safety risks. Therefore, heat dissipation structures need to be added to the outside of the module to manage heat.

[0004] However, existing energy storage battery modules have heat dissipation problems: modular heat dissipation frames are mostly fixed installations with tightly packed internal cells, which can easily lead to poor heat dissipation uniformity when using air cooling. Liquid cooling, if using a top-mounted design, may result in poor heat dissipation due to limitations in the mounting method, causing large temperature differences between cells. At the same time, the flow channel layout of liquid cooling plates is mostly straight or simple serpentine, which can easily lead to uneven flow rate of the coolant during the flow process. Cells near the liquid inlet end are too cold, while cells far away are too hot, forming local high temperature points. Based on this, we propose a modular heat dissipation frame for energy storage battery modules to solve the above problems. Summary of the Invention

[0005] To overcome the problem that existing modular heat dissipation frames for energy storage battery modules are mostly fixed and have tightly packed internal cells, air cooling can easily lead to poor heat dissipation uniformity. Liquid cooling, if it adopts a top-mounted design, may have poor heat dissipation due to the limitations of the mounting method, resulting in large temperature differences between cells. At the same time, the flow channel layout of liquid cooling plates is mostly straight or simple serpentine, which can easily lead to uneven flow rate of the coolant during the flow process. Cells near the liquid inlet end are too cold, while cells far away are too hot, forming local high temperature points.

[0006] The technical solution of the present invention is as follows: a modular heat dissipation frame for an energy storage battery module, including a battery box, a modular battery cell assembly is provided inside the battery box, ventilation slots are provided on the left and right side walls of the battery box, and a ventilation fan is provided on one side of the ventilation slot inside the battery box. The ventilation fan is movably connected to the battery box through a displacement component, the displacement component is used to drive the ventilation fan to move laterally, and a coolant circulation interface for inputting and outputting coolant is also provided on the side wall of the battery box.

[0007] The modular battery cell assembly includes two battery cell modules arranged symmetrically on top and bottom, with a liquid cooling plate between the two battery cell modules. A limit frame is provided on the outside of the battery cell module. The limit frame has a hollow cross-section and is connected to the coolant circulation interface and the liquid cooling plate.

[0008] The battery cell module includes a battery cell body and snap-fit ​​sockets installed at both ends of the battery cell body. The snap-fit ​​sockets can be connected by snap-fit ​​components.

[0009] Furthermore, the length of the ventilation slot is 550mm, and the length of the ventilation slot is not less than the width of the modular battery cell assembly. The airflow can cover the entire battery cell area. The width of the battery cell assembly is 500mm. Two ventilation fans are installed vertically, and the center of the ventilation fans is aligned with the center of the battery cell module.

[0010] Furthermore, the air outlet of a single ventilation fan should cover at least one battery cell.

[0011] It should be noted that a certain gap is maintained between the ventilation slot and the ventilation fan to create some airflow space.

[0012] Furthermore, the battery box has an internal support frame that surrounds the end of the cell module. A protective plate is installed on the support frame and is attached to the end surface of the cell module. The attached surface of the protective plate is provided with a contact plate for connecting the electrodes of the cell body.

[0013] It should be noted that the connector is used to connect the terminals of multiple battery cells in series. The series connection structure of the battery cells is existing technology, and the associated wiring harness and system are common knowledge.

[0014] Furthermore, the displacement component includes a track box fixedly installed on the inner wall of the battery box. The track box has a hollow structure, and a drive wheel is rotatably installed at both ends of the track box. The two drive wheels are connected by a synchronous belt. The two track boxes are symmetrically arranged at the upper and lower ends of the ventilation fan. A connecting block is fixedly connected to both the upper and lower ends of the ventilation fan. The connecting block and the synchronous belt are fixedly connected. A sliding groove is opened on the surface of the track box, and the connecting block and the sliding groove are slidably connected.

[0015] Furthermore, a servo motor is fixedly installed on one side of the top of the track box. The output end of the servo motor is fixedly connected to the transmission wheel via a connecting shaft. The servo motor is used to drive the upper and lower transmission wheels at one end of the track box to rotate synchronously.

[0016] Furthermore, protruding ribs are distributed around the edge of the liquid cooling plate. The shapes of the protruding ribs and the snap-fit ​​seat are adapted to each other. The liquid cooling plate is connected to the limiting frame through the protruding ribs. The coolant in the limiting frame is diverted to the liquid cooling plate through the protruding ribs.

[0017] It should be noted that the protruding ribs and the flow channels in the liquid cooling plate are interconnected, allowing the coolant to flow into the liquid cooling plate through the protruding ribs.

[0018] Furthermore, the mounting base has a square structure and an installation groove that matches the battery cell body. The end corners of the mounting base are provided with positioning plates for axially limiting the battery cell body.

[0019] Furthermore, a heat transfer tube is provided between the two card slots, and the array of heat transfer tubes is distributed around the outside of the battery cell body, and a temperature sensor is provided on the card slot.

[0020] Furthermore, the snap-fit ​​assembly includes a snap-fit ​​block and a snap-fit ​​groove disposed on the side wall of the snap-fit ​​seat. The cross-section of the snap-fit ​​block and the snap-fit ​​groove is trapezoidal. When the snap-fit ​​block snaps into the snap-fit ​​groove, the two snap-fit ​​seats are spliced ​​together.

[0021] The beneficial effects of this invention are:

[0022] 1. The modular heat dissipation frame of this energy storage battery module has a liquid cooling plate placed between two cell modules. It is attached to the snap-fit ​​seat through protruding ribs and works with the limiting frame to divert the coolant, optimize the flow channel of the coolant, and realize a multi-channel structure, so that the heat dissipation of the liquid cooling plate is more uniform.

[0023] 2. The modular heat dissipation frame of this energy storage battery module has both ends of the cell body fixed by the snap-fit ​​socket, so that a certain gap is maintained between the cell bodies. This, together with the ventilation fan, forms air convection between the cells, which facilitates the removal of heat. The composite heat dissipation makes the heat dissipation more uniform and reduces heat dissipation blind spots.

[0024] 3. The modular heat dissipation frame of the energy storage battery module, with the card slot having a built-in temperature sensor, forms a distributed temperature sensing network, which can detect the temperature difference inside the battery module. At the same time, the displacement component can adjust the position of the ventilation fan, realizing the linkage adjustment of the heat dissipation strategy and preventing local high temperature from causing safety risks.

[0025] 4. The modular heat dissipation frame of this energy storage battery module allows the cell modules to be spliced ​​together through snap-fit ​​components, supporting quick disassembly and maintenance. The liquid cooling plate and the limiting frame are adapted through protruding ribs, simplifying the layout of the coolant pipeline and simultaneously optimizing the liquid cooling and air cooling channels, resulting in more uniform heat dissipation. Attached Figure Description

[0026] Figure 1 The diagram shown is a schematic of the modular battery cell assembly structure of the present invention;

[0027] Figure 2 The diagram shown is a schematic representation of the battery box structure of the present invention.

[0028] Figure 3 The diagram shown is a schematic representation of the internal structure of the present invention.

[0029] Figure 4 The diagram shown is a schematic representation of the card holder structure of the present invention;

[0030] Figure 5 The diagram shown is a schematic representation of the internal structure of the track box of the present invention.

[0031] Figure 6 The diagram shown is a schematic representation of the transmission wheel structure of the present invention;

[0032] Figure 7 The diagram shown is a schematic representation of the liquid cooling plate and protruding rib structure of the present invention.

[0033] Figure 8 The diagram shown is a schematic of the support frame structure of the present invention.

[0034] Explanation of reference numerals in the attached drawings: 1. Battery box; 11. Support frame; 2. Ventilation slot; 3. Coolant circulation interface; 4. Ventilation fan; 41. Track box; 42. Drive wheel; 43. Synchronous belt; 44. Connecting block; 45. Servo motor; 5. Liquid cooling plate; 51. Protruding rib; 6. Limiting frame; 7. Snap-fit ​​seat; 701. Heat transfer pipe; 71. Snap-fit ​​block; 72. Snap-fit ​​groove; 8. Battery cell body. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Please see Figures 1-8The present invention provides an embodiment of a modular heat dissipation frame for an energy storage battery module, including a battery box 1. The battery box 1 is equipped with modular battery cell components. Ventilation slots 2 are provided on both sides of the surface of the battery box 1. Dustproof nets are provided in the ventilation slots 2. A control box is provided on the side of the ventilation slots 2 on the surface of the battery box 1. A coolant circulation interface 3 is provided on the left end of the battery box 1. There are two coolant circulation interfaces 3, which are used for inputting and outputting coolant, respectively. A ventilation fan 4 is provided on one side inside the battery box 1. The ventilation fan 4 is movably connected to the battery box 1 through a displacement component. The displacement component is used to drive the ventilation fan 4 to move laterally.

[0037] The modular battery cell assembly includes two symmetrically arranged battery cell modules, with a liquid cooling plate 5 between the two battery cell modules. A limit frame 6 is provided on the outside of the battery cell module. The limit frame 6 has a hollow structure, and the coolant circulation interface 3 is connected to the limit frame 6.

[0038] It should be noted that the liquid cooling structure needs to be connected to an external liquid cooling circulation device (such as a cooling tower). The coolant is input through the coolant circulation port 3 on one side, and after absorbing heat through the liquid cooling plate 5, it is discharged from the coolant circulation port 3 on the other side and circulated to the external liquid cooling circulation device for re-cooling. The liquid cooling circulation device mainly consists of a circulation pump, a storage tank, and a cooling device.

[0039] The battery cell module includes a snap-fit ​​socket 7 and a battery cell body 8 installed in the snap-fit ​​socket 7. The snap-fit ​​sockets 7 are connected to each other by snap-fit ​​components.

[0040] In this embodiment, a support frame 11 is provided inside the battery box 1. The support frame 11 surrounds the end of the cell module. A protective plate is installed on the support frame 11. The protective plate is attached to the end surface of the cell module. The attached surface of the protective plate is provided with a contact piece for connecting the electrode of the cell body 8. The length of the ventilation slot 2 is 550mm. The length of the ventilation slot 2 is not less than the width of the modular cell assembly. The airflow can cover the entire cell area. The width of the cell assembly is 500mm. Two ventilation fans 4 are arranged vertically. The center of the ventilation fan 4 is aligned with the center of the cell module. The air outlet range of a single ventilation fan 4 covers at least one cell body 8.

[0041] It should be noted that the protective plate is made of a highly thermally conductive insulating material, and the contact points on its surface are connected to the electrodes of the battery cell module through elastic contacts, which ensures stable current transmission and avoids the risk of short circuits caused by direct metal contact. The support frame 11 is rigidly fixed to the inner wall of the battery box 1 by bolts, which can offset the expansion stress during the charging and discharging process of the battery cell and improve the vibration resistance of the overall structure.

[0042] Please see Figure 3 , Figure 5 and Figure 6 In this embodiment, the displacement component includes a track box 41 fixedly installed on the inner wall of the battery box 1. The track box 41 has a hollow structure, and transmission wheels 42 are rotatably installed at both ends of the track box 41. The two transmission wheels 42 are connected by a synchronous belt 43. The two track boxes 41 are symmetrically arranged at the upper and lower ends of the ventilation fan 4. Connecting blocks 44 are fixedly connected to both the upper and lower ends of the ventilation fan 4. The connecting blocks 44 and the synchronous belt 43 are fixedly connected. The surface of the track box 41 is provided with a sliding groove, and the connecting blocks 44 and the sliding groove are slidably connected. A servo motor 45 is fixedly installed on one side of the top of the track box 41. The output end of the servo motor 45 is fixedly connected to the transmission wheels 42 through a connecting shaft. The servo motor 45 is used to drive the upper and lower transmission wheels 42 at one end of the track box 41 to rotate synchronously.

[0043] It should be noted that the servo motor 45 drives the rotation of the transmission wheel 42, which enables the synchronous belt 43 to drive the ventilation fan 4 to move laterally. Both the upper and lower transmission wheels 42 are connected to the servo motor 45 to achieve synchronous rotation. The servo motor 45 is equipped with an encoder feedback system, which can monitor the position of the ventilation fan 4 in real time (accuracy ±0.5mm). It is also linked with the battery cell temperature sensor through the PLC module in the control box. When the battery cell temperature in a certain area exceeds the threshold (such as 45℃), the ventilation fan 4 automatically moves to the corresponding position to enhance local heat dissipation and achieve "fixed-point air cooling". The synchronous belt 43 is made of polyurethane steel wire synchronous belt with a wear resistance coefficient of 1 million cycles, which can meet the requirements of long-term high-frequency displacement.

[0044] Based on another embodiment of the displacement component in this embodiment, the synchronous belt 43 transmission can be replaced with a ball screw pair structure. A screw is installed on the inner side of the track box 41 along the length direction, and a ball screw nut is threaded on the screw. One end of the ventilation fan 4 is fixed to the ball screw nut. The screw is driven to rotate by the servo motor 45. This structure has higher transmission accuracy (positioning error ≤ 0.1mm).

[0045] Please see Figure 1 , Figure 3 and Figure 7 In this embodiment, protruding ribs 51 are distributed around the edge of the liquid cooling plate 5. The shapes of the protruding ribs 51 and the snap-fit ​​seat 7 are adapted to each other. The liquid cooling plate 5 is connected to the limiting frame 6 through the protruding ribs 51. The coolant in the limiting frame 6 is diverted to the liquid cooling plate 5 through the protruding ribs 51.

[0046] It should be noted that the protruding rib 51 integrates microchannels and connects with the channels in the liquid cooling plate 5. The flow channel structure of the liquid cooling plate 5 is a conventional technical solution. The coolant (a 50% water + 50% ethylene glycol mixture is recommended) forms turbulence within the flow channel. The principle is as follows: the protruding rib 51 forms a raised structure. When opening the channel, a horizontal or vertical structure is not used. Based on the protrusion of the protruding rib 51, the flow channel surrounding the channel is a three-dimensional curved structure. Thus, when the coolant flows, the fluid generates boundary resistance at the protruding rib 51, forming a large... The flow is eddy current, and the limiting frame 6 divides the coolant into 3-4 parallel flow channels. By changing the cross-sectional area of ​​the flow channels, the local flow velocity is increased by 30%, and the heat exchange efficiency is increased by 30% compared with the traditional flat liquid cooling plate. The external coolant is first introduced into the limiting frame 6, which is a hollow structure. It is connected to the liquid inlet of the liquid cooling plate 5 through the array of interfaces distributed on its surface. The liquid cooling plate 5 and the limiting frame 6 are sealed by O-rings, which facilitates the connection between the liquid cooling plate 5 and the limiting frame 6 and prevents the coolant from leaking into the battery cell module.

[0047] Please see Figure 3 , Figure 4 and Figure 8 In this embodiment, the mounting base 7 is a square structure, and the mounting base 7 is provided with an installation groove that is compatible with the battery cell body 8. The end corners of the mounting base 7 are provided with positioning plates for axially limiting the battery cell body 8. A heat transfer tube 701 is provided between two mounting bases 7. The array of heat transfer tubes 701 is distributed around the outside of the battery cell body 8. A temperature sensor is provided on the mounting base 7. The heat transfer tubes 701 are evenly distributed between the battery cells. When airflow passes through, they form a heat exchange effect of heat dissipation fins.

[0048] In this embodiment, the snap-fit ​​assembly includes a snap-fit ​​block 71 and a snap-fit ​​groove 72 disposed on the side wall of the snap-fit ​​seat 7. The cross-sections of the snap-fit ​​block 71 and the snap-fit ​​groove 72 are trapezoidal. When the snap-fit ​​block 71 snaps into the snap-fit ​​groove 72, the two snap-fit ​​seats 7 are spliced ​​together.

[0049] It should be noted that the mating gap between the snap-fit ​​block 71 and the snap-fit ​​groove 72 is controlled at 0.05-0.1mm. After splicing, the positioning plate and the limiting frame 6 form a double positioning. The clamp structure formed by the limiting frame 6 fixes multiple battery cell bodies 8. The limiting frame 6 is installed on the outside, and the frame fits against the outside of the battery cell, ensuring that the overall flatness error of the battery cell module is ≤0.5mm / m. The snap-fit ​​seat 7 is made of flame-retardant ABS+PC alloy material (UL94 V-0 grade), which can delay the spread of flames in the early stage of thermal runaway of the battery cell and buy time for the thermal management system to trigger the protection mechanism.

[0050] Working Principle: The battery cell body 8 is assembled through the connection of the snap-fit ​​sockets 7. Multiple snap-fit ​​sockets 7 are connected by snap-fit ​​blocks 71 and snap-fit ​​slots 72, so that multiple snap-fit ​​sockets 7 can be assembled into battery modules of different sizes. Liquid cooling plates 5 are added between the battery modules to achieve liquid cooling heat dissipation. The outside of the modular battery cell assembly is protected by the battery box 1, and the built-in ventilation fan 4 forms air cooling heat dissipation. The whole adopts a composite and collaborative heat dissipation method. The snap-fit ​​sockets 7 form a modular structure, which facilitates the assembly and disassembly of the battery cells. The snap-fit ​​sockets 7 of the battery cell module have built-in temperature sensors to collect the temperature data of each battery cell body 8 in real time. Combined with the adjustment of the position of the ventilation fan 4 by the servo motor 45, the temperature sensor data feedback the location of the high temperature area, and the fan moves to the front of the corresponding battery cell module to form a directional airflow. The modular design of the snap-fit ​​sockets 7 allows for a certain gap between the battery cell bodies 8 to facilitate airflow and remove heat. External cold air enters the box through the ventilation slots 2 (with dust filters to remove impurities) on both sides of the battery box 1 and is accelerated by the ventilation fan 4. The heat is then blown onto the surface of the battery cell module, carrying away the heat. The liquid cooling structure requires connection to an external coolant circulation system, pumped in through the coolant circulation interface 3 (inlet), and diverted through the hollow limiting frame 6 to the protruding ribs 51 of the liquid cooling plate 5. The protruding ribs 51 are in close contact with the battery cell module's mounting base 7. The heat from the battery cell body 8 is conducted through the contact between its bottom and the liquid cooling plate 5. Furthermore, the mounting base 7 and the auxiliary heat transfer pipes 701 wrapped around the upper and lower sides of the battery cell body 8 increase the contact between the mounting base 7 and the liquid cooling plate 5. The conductive area, along with the air gap between the battery cell modules and the surface of the liquid cooling plate 5, forms natural convection. The heated coolant flows back to the external cooling system (such as a cooling tower) through the circulation interface 3 (output port) on the other side to cool down. The circulation flow rate is dynamically adjusted according to the temperature. The diversion of the limit frame 6 avoids the problem of excessively long flow channels or uneven flow rates caused by a single inlet and outlet, which would result in the battery cells near the liquid inlet being too cold and the battery cells far away being too hot, forming local high temperature points. At the same time, combined with the heat transfer pipe 701, the heat is conducted and the heat dissipation surface is increased.

[0051] It should be noted that the control method of the present invention is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail. At the same time, the control of the heat dissipation structure is adjusted according to the temperature.

[0052] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be considered as limitations on the present invention, and the scope of protection of the present invention should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A modular heat dissipation frame for an energy storage battery module, characterized in that: The battery box (1) is internally provided with a modularized battery cell assembly, the left and right side walls of the battery box (1) are each provided with a ventilation slot (2), and the ventilation slot (2) is provided with a ventilation fan (4) on one side in the interior of the battery box (1); the ventilation fan (4) is movably connected to the battery box (1) through a displacement assembly, the displacement assembly is used for driving the ventilation fan (4) to move laterally, and the side wall of the battery box (1) is further provided with a cooling liquid circulation interface (3) for inputting and outputting cooling liquid; The modularized battery cell assembly comprises two battery cell modules symmetrically arranged upward and downward, and a liquid cooling plate (5) is arranged between the two battery cell modules; the outer side of the battery cell module is provided with a limiting frame (6), the limiting frame (6) has a hollow structure in cross section, and the limiting frame (6) is connected to the cooling liquid circulation interface (3) and the liquid cooling plate (5); The battery cell module comprises a battery cell body (8) and clamping seats (7) mounted at both ends of the battery cell body (8), and the clamping seats (7) are connected through a clamping assembly.

2. The modular thermal frame for an energy storage battery module of claim 1, wherein: The length of the ventilation slot (2) is not less than the width of the modularized battery cell assembly, airflow can cover the entire battery cell area, and two ventilation fans (4) are arranged upward and downward.

3. The modular thermal frame of an energy storage battery module of claim 2, wherein: The air outlet range of a single ventilation fan (4) covers at least one battery cell body (8).

4. The modular thermal frame of an energy storage battery module of claim 1, wherein: The interior of the battery box (1) is provided with a support frame (11) surrounding the end portion of the battery cell module, a protective plate is mounted on the support frame (11), the protective plate is attached to the end surface of the battery cell module, and the attached surface of the protective plate is provided with an electrode connecting piece for connecting the electrode of the battery cell body (8).

5. The modular thermal frame of an energy storage battery module of claim 1, wherein: The displacement assembly comprises a track box (41) fixedly mounted on the inner wall of the battery box (1), the track box (41) has a hollow structure, two transmission wheels (42) are rotatably mounted at both ends of the track box (41), the two transmission wheels (42) are drivingly connected through a synchronous belt (43), the two track boxes (41) are symmetrically arranged at the upper and lower ends of the ventilation fan (4), the ventilation fan (4) is fixedly connected with a connecting block (44) at the upper and lower ends, the connecting block (44) is fixedly connected with the synchronous belt (43), and a sliding groove is formed in the surface of the track box (41), the connecting block (44) is slidingly connected with the sliding groove.

6. The modular thermal frame of an energy storage battery module of claim 5, wherein: A servo motor (45) is fixedly mounted on one side of the top of the track box (41), the output end of the servo motor (45) is fixedly connected with the transmission wheel (42) through a connecting shaft, and the servo motor (45) is used for driving the two transmission wheels (42) at one end of the track box (41) to rotate synchronously.

7. The modular thermal frame of an energy storage battery module of claim 1, wherein: The edge of the liquid cooling plate (5) is provided with a protruding rib (51) in a surrounding distribution, the protruding rib (51) and the clamping seat (7) are mutually adapted in shape, the liquid cooling plate (5) is connected with the limiting frame (6) through the protruding rib (51), and the cooling liquid in the limiting frame (6) is shunted to the liquid cooling plate (5) through the protruding rib (51).

8. The modular thermal frame of an energy storage battery module of claim 1, wherein: The clamping seat (7) has a square structure, and an installation groove matched with the battery cell body (8) is formed in the clamping seat (7), and a positioning plate for axially limiting the battery cell body (8) is arranged at the corner of the end portion of the clamping seat (7).

9. The modular thermal frame of an energy storage battery module of claim 1, wherein: Heat transfer pipes (701) are arranged between the two clamping seats (7), the heat transfer pipes (701) are arranged in an array and distributed around the outside of the battery cell body (8), and a temperature sensor is arranged on the clamping seat (7).

10. The modular thermal frame for an energy storage battery module of claim 1, wherein: The clamping assembly comprises a clamping block (71) and a clamping groove (72) arranged on the side wall of the clamping seat (7), the cross section of the clamping block (71) and the clamping groove (72) is in a trapezoidal structure, and when the clamping block (71) is clamped into the clamping groove (72), the two clamping seats (7) are spliced and connected.

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