A modular sodium-electric heavy-duty truck liquid-cooled insert box structure

Abstract

This invention relates to the field of sodium battery power battery pack technology, and more specifically, to a modular sodium battery heavy-duty truck liquid-cooled battery pack structure, including a battery pack mechanism, wherein a sodium battery module is disposed inside the battery pack mechanism; the battery pack mechanism consists of a liquid-cooled base plate and a cover, wherein a liquid-cooled cavity is formed in the liquid-cooled base plate, and staggered partitions are arranged in the liquid-cooled cavity; a one-way flow component is provided at one end of each partition, and the one-way flow component and the partitions divide the liquid-cooled cavity into multiple liquid-cooled zones, wherein multiple buffer plates are arranged in an array within each liquid-cooled zone; an inlet and an outlet are provided on the liquid-cooled base plate, and the inlet and outlet are connected to the liquid-cooled cavity. This invention solves the problem that when a heavy-duty truck frequently brakes and stops during operation, the coolant in the battery pack will slosh due to inertia, resulting in uneven coolant distribution, affecting the heat dissipation and temperature uniformity of the battery module, accelerating battery aging, and potentially causing safety hazards.

Description

Technical Field

[0001] This invention relates to the field of sodium battery power battery pack technology, and more specifically, to a modular sodium battery heavy truck liquid-cooled plug box structure. Background Technology

[0002] Currently, new energy vehicles are becoming increasingly popular in the market. Among them, new energy heavy trucks mainly use lithium iron phosphate battery packs. Although lithium-ion batteries have a slight advantage in energy density compared to sodium batteries, sodium-ion batteries perform particularly well in terms of safety and cost-effectiveness. Furthermore, due to the complex operating environment of new energy heavy trucks, higher requirements are placed on the safety and stability of the battery packs for new energy heavy trucks.

[0003] In addition, when new energy heavy trucks frequently stop and brake during operation, the coolant inside the battery compartment will shake violently due to inertia. This shaking not only exacerbates the uneven distribution of coolant, but may also cause too much or too little coolant in some areas, thereby affecting the overall heat dissipation effect of the battery module.

[0004] Uneven distribution and violent shaking of the coolant not only reduce the heat dissipation efficiency of the battery pack, but may also cause thermal shock to the battery module, affecting the temperature uniformity and consistency of the battery. In the long run, this will accelerate the aging process of the battery and may even lead to serious safety problems such as battery thermal runaway.

[0005] To address the aforementioned issues, a modular sodium-electric heavy-duty truck liquid-cooled insert box structure is proposed. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the problems existing in the prior art, this invention provides a modular sodium-ion battery heavy-duty truck liquid-cooled battery compartment structure to solve the problem mentioned in the background art where frequent braking during the operation of new energy heavy-duty trucks causes the coolant inside the battery compartment to shake violently due to inertia, resulting in uneven coolant distribution, affecting the heat dissipation and temperature uniformity of the battery module, accelerating battery aging, and potentially causing safety hazards.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a modular sodium-electric heavy-duty truck liquid-cooled insert box structure, including an insert box mechanism, wherein a sodium-electric module is disposed inside the insert box mechanism;

[0010] The insertion box mechanism consists of a liquid-cooled base plate and a box cover. The liquid-cooled base plate has a liquid-cooled cavity, and the liquid-cooled cavity is provided with staggered partitions. One end of each partition is provided with a one-way flow component, and the one-way flow component and the partition divide the liquid-cooled cavity into multiple liquid-cooled zones. Multiple buffer plates are arranged in an array within each liquid-cooled zone.

[0011] The liquid-cooled base plate is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are connected to the liquid-cooled cavity. The flow direction of the unidirectional flow component is from the liquid inlet to the liquid outlet.

[0012] The present invention is further configured such that one end of the partition plate is provided with a rotating groove and a rod insertion groove, and the rotating groove and the rod insertion groove are connected;

[0013] The unidirectional flow assembly includes a rotating shaft disposed in the rotating groove, a flow roller valve disposed on the rotating shaft, and an anti-rotation rod disposed in the insertion groove.

[0014] The present invention is further configured such that the rotating shaft component includes a rotating shaft that rotates in accordance with the rotating groove, and three sets of snap-fit ​​grooves formed on the circumferential sidewall of the rotating shaft.

[0015] The present invention is further configured such that the flow roller valve includes a shaft roller fixedly connected to the rotating shaft, and three sets of closed blades arranged in a circumferential array on the shaft roller.

[0016] The present invention is further configured such that the sodium battery module is composed of a sodium ion battery cell, aerogel, a series aluminum target, positive and negative aluminum targets, voltage and temperature acquisition harness, module end plate, steel strip and insulating components;

[0017] The sodium-ion battery cell is provided in multiple sets, and aerogel is provided between each set of sodium-ion battery cells. The multiple sets of sodium-ion battery cells are connected in series by a series aluminum target. The multiple sets of sodium-ion battery cells, aerogel and series aluminum target are combined to form a battery cell module. The module end plate is provided at both ends of the battery cell module. The two sets of module end plates and battery cell modules are bound together by steel strips.

[0018] The battery cell module is provided in multiple sets, and the multiple sets of battery cell modules are connected in series through positive and negative aluminum targets.

[0019] The present invention is further configured such that the voltage and temperature acquisition harness is electrically connected to multiple sodium-ion battery cells by bolts;

[0020] Each of the battery cell modules has an insulating component fixedly installed at its top.

[0021] The invention is further configured such that an explosion-proof valve, a power plug, and a communication plug are fixedly installed on the liquid-cooled base plate by bolts.

[0022] The present invention is further configured such that an electrical bracket is fixedly installed at one end of the liquid-cooled base plate, and a battery management module and a fuse are fixedly installed on the electrical bracket;

[0023] The battery management module is connected to the voltage and temperature acquisition harness and the communication plug-in.

[0024] The invention is further configured such that the fuse is fixedly connected to the sodium battery module via a copper busbar, and the other end of the fuse is fixedly connected to the power plug via a copper busbar.

[0025] The present invention is further configured such that a temperature sensing tube is provided at the top of the sodium battery module.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, the present invention provides a modular sodium-electric heavy-duty truck liquid-cooled insert box structure, which has the following beneficial effects:

[0028] 1. This invention forms multiple liquid cooling zones through the design of staggered partitions and unidirectional flow components within the liquid-cooled base plate, and uses buffer plates to reduce coolant sloshing, ensuring that the coolant is evenly distributed within the casing, effectively improving heat dissipation efficiency and maintaining the temperature uniformity of the battery module.

[0029] 2. This invention, through modular design combined with comprehensive insulation protection, such as explosion-proof valves, temperature probes, and voltage and temperature acquisition harnesses, can respond promptly when the battery experiences abnormal conditions such as overheating or overvoltage, effectively preventing safety accidents such as thermal runaway and improving the overall safety and stability of the battery pack for new energy heavy trucks.

[0030] 3. The present invention makes the installation and subsequent maintenance of the sodium-electric heavy truck liquid-cooled plug box more convenient through modular design. By pre-assembling various components such as sodium-electric modules, liquid-cooled base plates, and box covers, and then hoisting them onto the heavy truck as a whole, the installation time is greatly shortened, maintenance costs are reduced, and the overall operating efficiency of the vehicle is improved. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the modular sodium-electric heavy-duty truck liquid-cooled insert box.

[0032] Figure 2 This is an exploded structural diagram of the liquid-cooled insert box structure for a modular sodium-electric heavy-duty truck.

[0033] Figure 3 This is a schematic diagram of the exploded structure of a sodium battery module.

[0034] Figure 4 This is a schematic diagram of the cross-sectional structure of the liquid-cooled base plate.

[0035] Figure 5This is a schematic diagram of the internal structure of the liquid cooling cavity.

[0036] Figure 6 This is a structural diagram of the rotating groove, the insert groove, and the anti-rotation rod.

[0037] Figure 7 This is a schematic diagram of the flow roller valve's state structure when the stop rod and shaft are jammed together.

[0038] Figure 8 This is a schematic diagram showing the state of the flow roller valve with four sets of closed blades when the stop rod and shaft are engaged.

[0039] In the diagram: 1. Insertion box mechanism; 101. Liquid-cooled base plate; 102. Box cover; 103. Liquid-cooled cavity; 104. Partition plate; 104a. Rotating groove; 104b. Insertion rod groove; 105. Liquid-cooled zone; 106. Buffer plate; 107. Liquid inlet; 108. Liquid outlet; 2. Sodium battery module; 201. Sodium-ion battery cell; 202. Aerogel; 203. Series aluminum target; 204. Positive and negative aluminum targets; 205. Voltage 206. Temperature acquisition harness; 207. Module end plate; 208. Steel strip; 209. Insulating component; 3. One-way flow assembly; 301. Anti-rotation rod; 4. Rotating shaft; 401. Rotating shaft; 402. Snap-fit ​​groove; 5. Flow roller valve; 501. Shaft roller; 502. Enclosed blade; 6. Explosion-proof valve; 7. Power plug-in; 8. Communication plug-in; 9. Electrical bracket; 10. Battery management module; 11. Fuse; 12. Temperature probe tube. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0042] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0043] For examples, please refer to Figure 1 - Figure 8 A modular sodium-electric heavy-duty truck liquid-cooled insert box structure includes an insert box mechanism 1, and a sodium-electric module 2 is provided inside the insert box mechanism 1.

[0044] The box insertion mechanism 1 consists of a liquid-cooled base plate 101 and a box cover 102. The liquid-cooled base plate 101 has a liquid-cooled cavity 103, and the liquid-cooled cavity 103 is provided with staggered partition plates 104. One end of the partition plate 104 is provided with a one-way flow component 3, and the one-way flow component 3 and the partition plate 104 divide the liquid-cooled cavity 103 into multiple liquid-cooled zones 105. Multiple buffer plates 106 are arranged in an array in the liquid-cooled zone 105.

[0045] The liquid cooling base plate 101 is provided with a liquid inlet 107 and a liquid outlet 108, and the liquid inlet 107 and the liquid outlet 108 are connected to the liquid cooling cavity 103. The flow direction of the unidirectional flow component 3 is from the liquid inlet 107 to the liquid outlet 108.

[0046] The liquid-cooled base plate 101 is a concave box that is paired and sealed with the box cover 102 to enclose the sodium battery module 2 inside. The inner wall of the box cover 102 is covered with insulating sheets for electrical insulation. The box cover 102 and the liquid-cooled base plate 101 are fixedly connected by bolts, and a sealing ring is provided between their contact surfaces to facilitate waterproofing and airtightness of the sodium battery liquid-cooled insertion box. The liquid-cooled cavity 103 is opened at the bottom of the concave box of the liquid-cooled base plate 101, and coolant flows in the liquid-cooled cavity 103. When the sodium battery module 2 is placed inside the insertion box mechanism 1, the coolant flowing in the liquid-cooled cavity 103 can dissipate heat and cool down the sodium battery module 2.

[0047] Furthermore, the coolant enters through the inlet 107 and flows into the liquid cooling chamber 103, then flows to the next liquid cooling zone 105 through the one-way flow assembly 3, allowing the coolant to circulate within the liquid cooling chamber 103. Since the partition plates 104 are staggered within the liquid cooling chamber 103, their specific distribution is as follows... Figure 5 As shown, the channels connecting the multiple liquid cooling zones 105 are S-shaped and reciprocate, which makes the coolant flow more uniform in the liquid cooling cavity 103, thereby improving the cooling effect. Because the channels formed by the connection of the multiple liquid cooling zones 105 are S-shaped and reciprocate, multiple unidirectional flow components 3 are alternately arranged at both ends in the liquid cooling cavity 103.

[0048] When a heavy truck comes to a stop, the inertia of the vehicle causes the coolant to impact the forward direction. The impact causes the coolant to rebound, resulting in uneven distribution of the coolant in the liquid cooling chamber 103 for a short period of time, which in turn affects the heat dissipation effect of the sodium battery module 2.

[0049] Therefore, in this invention, by setting up multiple partition plates 104 and one-way flow components 3, when the heavy truck stops, the coolant impacts the partition plates 104 and one-way flow components 3, so that the coolant in the multiple liquid cooling zones 105 will not mix together, but will remain in the current liquid cooling zone. Since the volume of the liquid cooling zone 105 is smaller than that of the entire liquid cooling cavity 103, the coolant can quickly recover its stability after impact in the liquid cooling zone 105. This makes the coolant in the entire liquid cooling cavity 103 less turbulent when it stops and easier to recover its stability, thereby maintaining uniform heat dissipation.

[0050] It is important to note that the installation of this invention requires specific alignment. First, after installation, the inlet 107 must be positioned in front of the outlet 108, with the inlet indicating the direction of the truck's movement. After entering through the inlet 107, the coolant passes through multiple reciprocating S-shaped liquid cooling zones 105 and then flows out through the outlet 108. Therefore, during normal flow, the coolant flows in the opposite direction to the forward movement. Thus, when the coolant passes through the one-way flow component 3, it is transported backward. When the heavy truck brakes, the coolant, due to inertia, will impact the forward movement. However, the one-way flow component 3 can only transport the coolant backward, preventing it from flowing into adjacent liquid cooling zones 105 after impacting the one-way flow component. Consequently, after the heavy truck brakes, the coolant can only slosh within its current liquid cooling zone 105, reducing the intensity of the oscillation and allowing the oscillation to stabilize quickly within a smaller space.

[0051] Additionally, it should be noted that the axial direction of the partition plate 104 is perpendicular to the forward direction of the heavy truck, so that when there is an impact, the coolant hits the partition plate 104.

[0052] Preferably, multiple buffer plates 106 are also provided in the multiple liquid cooling zones 105, so that the coolant in the liquid cooling zone 105 is further buffered after the coolant stops, thereby reducing the oscillation intensity of the coolant when it stops.

[0053] The partition plate 104 has a rotating groove 104a and a rod insertion groove 104b at one end, and the rotating groove 104a and the rod insertion groove 104b are connected.

[0054] The one-way flow assembly 3 includes a rotating shaft 4 disposed in the rotating groove 104a, a flow roller valve 5 disposed on the rotating shaft 4, and an anti-rotation rod 301 disposed in the insertion rod groove 104b.

[0055] Both ends of the flow roller valve 5 are equipped with rotating shafts 4, and the liquid-cooled base plate 101 and the partition plate 104 are both provided with rotating grooves 104a for rotating installation of the rotating shafts 4. The rotating grooves 104a on the partition plate 104 are provided with connecting insertion grooves 104b. After installation, the insertion grooves 104b are vertical, allowing the anti-rotation rod 301 to automatically move downwards and engage with the rotating shafts 4 under gravity, thus preventing rotation. It should be noted that during normal coolant delivery, the rotating shafts 4 of the unidirectional flow assembly 3... The rotation direction will push the anti-rotation rod 301 upward. When the heavy truck stops, when the coolant hits the flow roller valve 5 in the forward direction, the impact force will change the rotation of the rotating shaft 4, thereby causing the anti-rotation rod 301 to move downward and engage with the rotating shaft 4. This prevents the flow roller valve 5 from rotating, thereby controlling the coolant in the liquid cooling zone 105 and preventing mixing of the flow. This would result in some liquid cooling zones 105 having more coolant and others having less coolant, thus creating an uneven distribution of coolant.

[0056] During the up-and-down movement of the anti-rotation rod 301, its end is located in the insertion groove 104b.

[0057] The rotating shaft component 4 includes a rotating shaft 401 that is rotatably matched with the rotating groove 104a, and three sets of snap-fit ​​grooves 402 opened on the circumferential side wall of the rotating shaft 401.

[0058] like Figure 7 As shown, the arc surface of the snap-fit ​​groove 402 and the circumferential side wall of the rotating shaft 401 transition smoothly, and the straight surface of the snap-fit ​​groove 402 corresponds to and abuts against each other, thereby preventing the rotating shaft 4 from rotating.

[0059] by Figure 7 To elaborate further, when the coolant is flowing normally, the coolant pushes the flow roller valve 5 to rotate clockwise. When the shaft 401 rotates, the anti-rotation rod 301 will enter the outer circumference of the shaft 401 along the arc surface of the locking groove 402. During this process, the anti-rotation rod 301 gradually moves upward. When it rotates 120 degrees, the anti-rotation rod 301 will enter the next locking groove 402 again from the circumference side wall of the shaft 401 and correspond to the arc surface of the locking groove 402 again. Then, under the action of gravity, the anti-rotation rod 301 moves downward again.

[0060] When the heavy truck comes to a stop during operation, the coolant pushes the flow roller valve 5 to rotate counterclockwise. The anti-rotation rod 301 will move in the opposite direction along the circumferential side wall of the rotating shaft 401 towards the straight surface of the locking groove 402. When the rotating shaft 401 rotates counterclockwise to the point where the straight surface of the locking groove 402 touches the anti-rotation rod 301, the rotating shaft 401 can no longer rotate, thus preventing the flow roller valve 5 from rotating and preventing the coolant from entering the adjacent liquid cooling zone 105.

[0061] The flow roller valve 5 includes a shaft roller 501 fixedly connected to the rotating shaft 401, and three sets of closed blades 502 arranged in a circumferential array on the shaft roller 501.

[0062] The end of the roller 501 is fixedly connected to the rotating shaft 401 and rotates with the rotating shaft 401. When the sealing blade 502 rotates and comes into contact with the bottom of the liquid cooling cavity 103, the two liquid cooling zones 105 are sealed. When the coolant is flowing normally, when it flows through the one-way flow component 3, the rotating shaft 401 can rotate, so the sealing blade 502 does not block the coolant. When the heavy truck stops, the anti-rotation rod 301 and the vertical surface of the locking groove 402 abut. At this time, one of the three sets of sealing blades 502 is in a vertical state and comes into contact with the bottom of the liquid cooling cavity 103, thus sealing the liquid cooling zone 105.

[0063] It should be noted that the arrangement of the three sets of sealed blades 502 is such that when one set of sealed blades 502 is vertically aligned with the bottom of the liquid cooling cavity 103, the other two sets of sealed blades 502 are as follows: Figure 7 As shown, the coolant is inclined upwards. When the heavy truck stops, the inertia of the coolant will impact the vertical closed blade 502 and the inclined upward closed blade 502. Since the vertical closed blade 502 and the direction of inertia of the coolant are perpendicular to each other, the impact force of the coolant on the surface is undamaged. However, the inclined upward closed blade 502 has a deflection angle with the direction of inertia of the coolant, so the impact force will be deflected. Therefore, the force pushing the inclined upward closed blade 502 is smaller. Thus, under this design, the shaft 401 will definitely rotate counterclockwise, thereby stopping the shaft 401 from rotating. In addition, the closed blade 502 seals each liquid cooling zone 105, preventing the coolant from flowing between them.

[0064] Regarding the design of three sets of closed blades 502, a comparison of the effects is further conducted by designing four sets of closed blades 502, as an example. Figure 8 As shown, when the four sets of closed blades 502 are in a cross shape, when one of the closed blades 502 is in a vertical position and not touching the bottom of the liquid cooling cavity 103, the four sets of closed blades 502 will maintain a cross shape. In order to ensure that the rotating shaft 401 is in a stopped state when the closed blades 502 are in a vertical position and not touching the bottom of the liquid cooling cavity 103, the corresponding number of locking grooves 402 on the rotating shaft 401 also need to be opened. Two of the four sets of closed blades 502 in the cross shape are set vertically. When the heavy truck stops, the inertial impact force of the coolant on the two sets of vertical closed blades 502 is the same. However, since the coolant rotates clockwise during normal flow, under the same inertial impact force, the flow roller valve 5 will most likely still rotate clockwise. This means that when the heavy truck stops, it is impossible to see the liquid cooling zone 105 being separated and closed to reduce the intensity of coolant oscillation.

[0065] The sodium battery module 2 is composed of a sodium ion battery cell 201, aerogel 202, a series aluminum target 203, positive and negative aluminum targets 204, voltage and temperature acquisition harness 205, module end plate 206, steel strip 207 and insulating component 208.

[0066] Multiple sodium-ion battery cells 201 are provided, and aerogel 202 is provided between each group of sodium-ion battery cells 201. The multiple groups of sodium-ion battery cells 201 are connected in series by aluminum targets 203. The multiple groups of sodium-ion battery cells 201, aerogel 202 and aluminum targets 203 are combined to form a battery cell module. Module end plates 206 are provided at both ends of the battery cell module. The two module end plates 206 and the battery cell module are bound together by steel strips 207.

[0067] The battery cell module is set in multiple groups, and the multiple groups of battery cell modules are connected in series through positive and negative aluminum targets 204.

[0068] The sodium-ion battery cells 201 are insulated and heat-insulated by the aerogel 202. After the steel strip 207 binds the module end plate 206 and the battery cell module, it is then fixedly connected to the liquid cooling base plate 101 by bolts passing through the module end plate 206.

[0069] The liquid-cooled base plate 101 is coated with thermally conductive structural adhesive on the panel that contacts the bottom of the sodium battery module 2, which is used to achieve heat conduction and buffer fixation of the sodium battery module 2. The liquid-cooled base plate 101 is pre-set with bolt lifting hooks and fixing holes around its perimeter, which is used to achieve lifting and fixing of the sodium battery liquid-cooled plug box.

[0070] The voltage and temperature acquisition harness 205 is electrically connected to multiple sodium-ion battery cells 201 via bolts; it is used to acquire and transmit voltage and temperature information of the sodium-ion battery cells 201.

[0071] An insulating component 208 is fixedly installed on the top of each cell module to achieve insulation of the top of the sodium battery module 2. The insulating component 208 is made of insulating material wrapped around the top of the cell module.

[0072] An explosion-proof valve 6, a power plug 7, and a communication plug 8 are fixedly installed on the liquid-cooled base plate 101 by bolts. With the explosion-proof valve 6, when the gas pressure in the sodium-electric liquid-cooled plug box reaches a certain threshold, the explosion-proof valve will release the pressure.

[0073] An electrical bracket 9 is fixedly installed at one end of the liquid-cooled base plate 101, and a battery management module 10 and a fuse 11 are fixedly installed on the electrical bracket 9.

[0074] The battery management module 10 is connected to the voltage and temperature acquisition harness 205 and the communication plug-in 8. The voltage and temperature information acquisition and communication of the battery management module 10 are realized through the communication plug-in 8.

[0075] The fuse 11 is fixedly connected to the sodium battery module 2 via a copper busbar, and the other end of the fuse 11 is fixedly connected to the power plug 7 via a copper busbar. With the power plug 7, electrical protection of the sodium battery liquid cooling box can be achieved when an overload or short circuit occurs.

[0076] The sodium battery module 2 is equipped with a temperature probe 12 at its top, which enables real-time monitoring of the temperature inside the sodium battery liquid cooling box.

[0077] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular sodium-electric heavy-duty truck liquid-cooled insert box structure, characterized in that: It includes a box insertion mechanism (1), and the box insertion mechanism (1) is provided with a sodium battery module (2). The insertion mechanism (1) consists of a liquid-cooled base plate (101) and a box cover (102). The liquid-cooled base plate (101) has a liquid-cooled cavity (103) and the liquid-cooled cavity (103) is provided with staggered partition plates (104). One end of the partition plate (104) is provided with a one-way flow component (3). The one-way flow component (3) and the partition plate (104) divide the liquid-cooled cavity (103) into multiple liquid-cooled zones (105). Multiple buffer plates (106) are arranged in an array in the liquid-cooled zone (105). The liquid-cooled base plate (101) is provided with a liquid inlet (107) and a liquid outlet (108), and the liquid inlet (107) and the liquid outlet (108) are connected to the liquid-cooled cavity (103). The flow direction of the unidirectional flow component (3) is from the liquid inlet (107) to the liquid outlet (108). The partition plate (104) has a rotating groove (104a) and a rod insertion groove (104b) at one end, and the rotating groove (104a) and the rod insertion groove (104b) are connected. The one-way flow assembly (3) includes a rotating shaft (4) disposed in the rotating groove (104a), a flow roller valve (5) disposed on the rotating shaft (4), and an anti-rotation rod (301) disposed in the insertion rod groove (104b). The rotating shaft (4) includes a rotating shaft (401) that is rotatably matched with the rotating groove (104a), and three sets of snap-fit ​​grooves (402) opened on the circumferential sidewall of the rotating shaft (401). The flow roller valve (5) includes a roller (501) fixedly connected to the rotating shaft (401) and three sets of closed blades (502) arranged in a circumferential array on the roller (501).

2. The modular sodium-electric heavy-duty truck liquid-cooled insert box structure according to claim 1, characterized in that: The sodium battery module (2) is composed of a sodium ion battery cell (201), aerogel (202), a series aluminum target (203), positive and negative aluminum targets (204), voltage and temperature acquisition harness (205), module end plate (206), steel strip (207) and insulating component (208); The sodium-ion battery cell (201) is provided in multiple sets, and aerogel (202) is provided between each set of sodium-ion battery cells (201). The multiple sets of sodium-ion battery cells (201) are connected in series by aluminum targets (203). The multiple sets of sodium-ion battery cells (201), aerogel (202) and aluminum targets (203) are combined to form a battery cell module. The module end plate (206) is provided at both ends of the battery cell module. The two sets of module end plates (206) and the battery cell module are bound together by steel strips (207). The battery cell module is provided in multiple sets, and the multiple sets of battery cell modules are connected in series through positive and negative aluminum targets (204).

3. The modular sodium-electric heavy-duty truck liquid-cooled insert box structure according to claim 2, characterized in that: The voltage and temperature acquisition harness (205) is electrically connected to multiple sodium-ion batteries (201) by bolts; Each of the battery cell modules has an insulating component (208) fixedly installed at its top.

4. The modular sodium-electric heavy-duty truck liquid-cooled insert box structure according to claim 3, characterized in that: An explosion-proof valve (6), a power plug (7), and a communication plug (8) are fixedly installed on the liquid-cooled base plate (101) by bolts.

5. The modular sodium-electric heavy-duty truck liquid-cooled insert box structure according to claim 4, characterized in that: An electrical bracket (9) is fixedly installed at one end of the liquid-cooled base plate (101), and a battery management module (10) and a fuse (11) are fixedly installed on the electrical bracket (9). The battery management module (10) is connected to the voltage and temperature acquisition harness (205) and the communication plug-in (8).

6. The modular sodium-electric heavy-duty truck liquid-cooled insert box structure according to claim 5, characterized in that: The fuse (11) is fixedly connected to the sodium battery module (2) via a copper busbar, and the other end of the fuse (11) is fixedly connected to the power plug (7) via a copper busbar.

7. The modular sodium-electric heavy-duty truck liquid-cooled insert box structure according to claim 6, characterized in that: A temperature probe (12) is provided at the top of the sodium battery module (2).

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