A large-capacity battery box for heavy-duty trucks with battery swapping based on full immersion liquid cooling

Abstract

The present invention relates to the field of battery application technology, specifically a large-capacity battery box for battery-swap heavy trucks based on full immersion liquid cooling, including a box body, a coolant filled in the box body, and a double-row distributed battery pack installed inside the box body, a DC terminal and a communication port are installed at the front end of the box body, a diverter plate is provided inside the box body and between the front and rear walls, and a guide group is provided inside the liquid inlet channel and the liquid outlet channel and between each two adjacent battery packs; wherein several guide groups in the liquid inlet channel guide the coolant from front to back, and several guide groups in the liquid outlet channel guide the coolant from back to front. The present invention allows the coolant to enter only from the liquid inlet channel and be discharged from the liquid outlet channel through the provided box body; at the same time, through the provided several guide groups, the coolant in the liquid inlet channel and the liquid outlet channel only flows in one direction even when the vehicle is driving, so that the coolant discharged is the coolant after absorbing heat, thereby improving the battery cooling efficiency.

Description

Technical Field

[0001] The present invention relates to the field of battery application technology, and specifically to a large-capacity battery box for battery-swap heavy trucks based on full immersion liquid cooling. Background Art

[0002] The so-called fully immersed liquid-cooled energy storage means that in the energy storage system, the energy storage cells are directly immersed in the coolant to completely isolate the cells from air, moisture, etc., so as to control the operating temperature of the energy storage battery system and achieve thermal management.

[0003] The operation of the battery box requires a stable temperature. If the temperature is too high or too low, it will affect the operating efficiency and service life of the energy storage power station. Especially when the temperature is too high, it may cause the battery cell to catch fire or explode, posing a threat to the safety of the energy storage power station.

[0004] Application number CN202220772347.8 discloses a contact liquid cooling plate and an immersion liquid cooling battery module, which adopt the same liquid cooling temperature control device and the coolant of uniform specifications. By setting the flow channel of the immersion coolant between the battery series strings, the immersion coolant and the liquid cooling strips are in full contact with each battery cell, and heat exchange is directly and efficiently carried out; and the temperature of the battery and the coolant is effectively monitored in real time, and the battery module PACK box and the liquid cooling strips are flexibly and controlled to provide the battery module PACK box and the liquid cooling strips with dynamic and effective exchange of cold liquid, thereby improving the heat exchange efficiency.

[0005] However, during the cooling and replacement process of the coolant, the area close to the infusion port is cooled first, and the area far away is cooled later. At the same time, the area close to the infusion port is also affected by the heat of the battery and absorbs heat, thereby offsetting the temperature of the coolant just input, making the area far away cool even later. In addition, there is also the effect of shaking the coolant when using battery-swap heavy-duty trucks, which makes the discharged coolant not absorb enough heat, that is, it is discharged without high heat absorption efficiency. Summary of the invention

[0006] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a large-capacity battery box for heavy-duty trucks with battery swapping based on full immersion liquid cooling to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides a large-capacity battery box for heavy-duty trucks based on full immersion liquid cooling, comprising a box body, a coolant filled in the box body, and a double-row distributed battery pack installed inside the box body, a DC terminal and a communication port are installed at the front end of the box body, a diverter plate is provided inside the box body and between the front and rear walls, a gap is left at the rear end of the diverter plate, the diverter plate divides the inner part of the box body into two left and right parts, which are a liquid inlet channel and a liquid outlet channel, and a guide group is provided inside the liquid inlet channel and the liquid outlet channel and between each two adjacent battery packs, the guide group comprises a guide plate for blocking the channel, an upper guide bar rotatably connected to the upper end of the guide plate, and a lower guide bar rotatably connected to the lower end of the guide plate; wherein a plurality of guide groups in the liquid inlet channel guide the coolant from front to back, and a plurality of guide groups in the liquid outlet channel guide the coolant from back to front, forming a unidirectional flow heat dissipation state.

[0008] As a further improvement of the present technical solution, the upper and lower ends of the guide plate are respectively provided with an upper snap-in and a lower snap-in, the upper guide bar is rotatably connected to the upper snap-in by a pin, the lower guide bar is rotatably connected to the lower snap-in by a pin, the upper guide bar and the upper snap-in are equal in height, the lower guide bar and the lower snap-in are equal in height, and the bottom of the battery pack is fixedly connected to a fixing seat with a channel structure.

[0009] As a further improvement of the present technical solution, one long side of the upper guide strip and the lower guide strip is a semicircular surface, and the other long side is an inverted V-shaped surface, the straight side surface of the upper guide strip is provided with an upper flow limit block, the cross-section of the upper flow limit block is a right triangle and its right angle is tangent to one side of the semicircular surface, the other half of the semicircular surface of the upper guide strip is provided with an upper flow block, the straight side surface of the lower guide strip is provided with a lower flow limit block, the cross-section of the lower flow limit block is a right triangle and its right angle is tangent to one side of the semicircular surface, and the other half of the semicircular surface of the lower guide strip is provided with a lower flow block.

[0010] As a further improvement of the present technical solution, the arc surfaces of each pair of the upper guide strips and the lower guide strips are arranged relative to each other, wherein each pair of upper limit flow blocks and lower limit flow blocks in the liquid inlet channel are arranged toward the rear of the box body, and each pair of upper limit flow blocks and lower limit flow blocks in the liquid outlet channel are arranged toward the front of the box body.

[0011] As a further improvement of the technical solution, wire holes are opened on the opposite end sides of the two rows of guide plates, and the wires of several battery packs pass through the wire holes and converge at the DC terminals.

[0012] As a further improvement of the technical solution, the outside of the box is provided with a cooling and heat dissipation group for circulating and draining the coolant inside and dissipating heat. The cooling and heat dissipation group includes a pair of cooling boxes distributed on the left and right sides of the box, heat dissipation pipes placed in the cooling boxes, a water pump for transporting the coolant between the heat dissipation pipes and the box, and a number of heat dissipation fins sleeved on the vertical sections of the heat dissipation pipes. The upper and lower ends of the heat dissipation fins pass through the upper and lower surfaces of the cooling box, and a connecting pipe is connected between the rear ends of the two heat dissipation pipes.

[0013] As a further improvement of the present technical solution, a liquid pipe is inserted at the front end of the box body and located directly in front of the liquid inlet channel, wherein the front end of the left water pump is provided with an input end connected to the heat dissipation pipe sleeve, and the side of the left water pump is provided with an output end connected to the liquid pipe in front of the liquid inlet channel.

[0014] As a further improvement of the present technical solution, a liquid pipe is inserted at the front end of the box body and located directly in front of the liquid outlet channel, wherein the front end of the right water pump is provided with an input end plugged into the liquid pipe in front of the liquid outlet channel, and the side of the right water pump is provided with an output end connected to the heat dissipation pipe.

[0015] As a further improvement of the technical solution, a plurality of vents are provided on the upper and lower surfaces of the cooling box and at equal intervals from front to back, the heat sink is tightly plugged into the vents, and a slot is provided in the middle of the heat sink for socketing with the vertical section of the serpentine heat pipe.

[0016] As a further improvement of the technical solution, a support seat in the shape of a step arch is fixedly connected to the bottom surface of the box body, and an arc-shaped reinforcement plate is provided in the middle of the support seat.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The large-capacity battery box for heavy-duty trucks with battery swapping based on full immersion liquid cooling separates the liquid inlet channel and the liquid outlet channel by setting up a liquid inlet channel and a liquid outlet channel inside the box body, so that the coolant only enters from the liquid inlet channel and is discharged from the liquid outlet channel; at the same time, through the setting of a number of guide groups, the coolant in the liquid inlet channel and the liquid outlet channel only flows in one direction even when the vehicle is driving, so that the coolant discharged is the coolant after absorbing heat, thereby improving the battery cooling efficiency.

[0019] 2. The large-capacity battery box for heavy-duty trucks with battery swapping based on full immersion liquid cooling has a cooling and heat dissipation group. Since the box is installed at the bottom of the vehicle, the heat of the heat sink is blown away by the airflow during the vehicle's driving, thereby achieving the effect of coolant heat dissipation. A connecting pipe is connected between the rear ends of the two heat dissipation pipes to form a reflux of the coolant to replace and cool the coolant in the box. The cooled coolant is pumped into the liquid inlet channel to replace the coolant that absorbs heat, and the coolant that absorbs heat in the liquid outlet channel is pumped and squeezed into the heat dissipation pipes on the right and left sides for cooling, so that the coolant circulates to absorb heat and cool for utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall internal structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the partial assembly structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 The main view of

[0025] Figure 5 This is a schematic diagram of the battery pack assembly structure of the present invention;

[0026] Figure 6 It is a structural schematic diagram of a pair of diversion groups in the diversion state of the present invention;

[0027] Figure 7 It is a structural schematic diagram of a pair of flow guide groups in the flow blocking state of the present invention;

[0028] Figure 8 It is a side view of the diversion group of the present invention in the diversion state;

[0029] Fig. 9 It is a side view of the diversion group of the present invention in a blocking state;

[0030] Fig.10 This is one of the schematic diagrams of the upper guide strip structure of the present invention;

[0031] Fig.11 This is the second schematic diagram of the upper guide strip structure of the present invention;

[0032] Fig.12 It is a schematic diagram of the structure of the lower guide strip of the present invention;

[0033] Fig.13 It is a schematic diagram of the assembly structure of the cooling and heat dissipation group of the present invention.

[0034] The meaning of each number in the figure is:

[0035] 100, box body; 101, manifold; 102, liquid inlet channel; 103, liquid outlet channel; 110, DC terminal; 120, communication port; 130, liquid pipe; 140, support base; 141, reinforcement plate; 150, battery pack; 151, fixing base;

[0036] 200, guide group; 210, guide plate; 211, upper bayonet; 212, lower bayonet; 213, wire hole; 220, upper guide strip; 221, upper flow limit block; 222, upper flow block; 230, lower guide strip; 231, lower flow limit block; 232, lower flow block;

[0037] 300, cooling and heat dissipation group; 310, cooling box; 311, ventilation port; 312, liquid port; 320, heat dissipation pipe; 321, connecting pipe; 330, water pump; 331, input end; 332, output end; 340, heat sink; 341, card slot. DETAILED DESCRIPTION

[0038] The details of the present invention can be more clearly understood by combining the accompanying drawings with the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as falling within the scope of the present invention. The terms "installation" and "connection" should be understood in a broad sense, which can be directly connected or indirectly connected through an intermediate medium.

[0039] See also Figure 1-Figure 13 As shown, the present invention provides a large-capacity battery box for battery-swap heavy trucks based on full immersion liquid cooling, including a box body 100, a coolant filled in the box body 100, and a double-row distributed battery pack 150 installed inside the box body 100, and a DC terminal 110 and a communication port 120 are installed at the front end of the box body 100; the DC terminal 110 is mainly used for the transmission and distribution of electric energy; in the immersion liquid cooling battery box, the DC terminal is responsible for outputting the DC power generated by the battery to an external device or system; these terminals are usually designed as high-reliability, low-resistance interfaces to ensure efficient transmission of electric energy; at the same time, they also have good insulation and protection properties to resist erosion and damage that may be caused by liquid coolant;

[0040] The communication port 120 is used for information exchange between the battery box and external devices or systems. Through the communication port, the working status, temperature, voltage and other key parameters of the battery box can be monitored in real time, so as to achieve precise control and optimized management of the battery box. In addition, the communication port also supports remote monitoring and fault diagnosis functions, so that operation and maintenance personnel can find and solve problems in time, thereby improving the reliability and service life of the battery box. The above are all existing technologies and will not be repeated here.

[0041] Specifically, a splitter plate 101 is provided inside the box body 100 and between the front and rear walls, and a gap is left at the rear end of the splitter plate 101 to facilitate the circulation of the coolant; the splitter plate 101 divides the inside of the box body 100 into two parts, namely, a liquid inlet channel 102 and a liquid outlet channel 103, that is, the coolant is designed to take away the heat of the battery from the liquid inlet channel 102, through the gap between the rear end of the splitter plate 101 and the box body 100, to the liquid outlet channel 103, and then flows out of the box body 100;

[0042] A guide group 200 is provided inside the liquid inlet channel 102 and the liquid outlet channel 103 and between every two adjacent battery packs 150, wherein a plurality of guide groups 200 in the liquid inlet channel 102 guide the coolant from front to back, and a plurality of guide groups 200 in the liquid outlet channel 103 guide the coolant from back to front, forming a unidirectional flow heat dissipation state, that is, mainly used to guide the coolant to flow only from the liquid inlet channel 102 to the liquid outlet channel 103, so as to avoid the coolant flowing back and forth without taking away the heat in time during the movement of the vehicle;

[0043] The guide group 200 includes a guide plate 210 for blocking the channel, an upper guide bar 220 rotatably connected to the upper end of the guide plate 210, and a lower guide bar 230 rotatably connected to the lower end of the guide plate 210; the guide plate 210 separates a number of battery groups 150 so that their working heat does not affect each other, and the unidirectional flow of the coolant can promptly and quickly remove the heat.

[0044] Specifically, the upper and lower ends of the guide plate 210 are respectively provided with an upper bayonet 211 and a lower bayonet 212, the upper guide bar 220 is rotatably connected to the upper bayonet 211 by a pin, and the lower guide bar 230 is rotatably connected to the lower bayonet 212 by a pin, the upper guide bar 220 and the upper bayonet 211 are of equal height, and the lower guide bar 230 and the lower bayonet 212 are of equal height, that is, the upper guide bar 220 and the lower guide bar 230 play a blocking role when they are vertical to prevent the coolant from flowing, and when the coolant is input into the liquid inlet channel 102 and the coolant is output from the liquid outlet channel 103, the upper guide bar 220 and the lower guide bar 230 are deflected in the flow of the coolant to make it flow;

[0045] The guide plate 210, the upper guide bar 220 and the lower guide bar 230 are all made of anti-corrosion materials, such as stainless steel, anti-corrosion alloys, polymers and ceramics, and are coated with anti-corrosion coatings, such as epoxy resin coatings, fluorocarbon paints, etc. on the outside to provide additional anti-corrosion protection; the bottom of the battery pack 150 is fixedly connected to a fixing seat 151 with a channel structure, such as a folding frame or an arch frame structure, so that coolant can also flow through the bottom of the battery pack 150.

[0046] Furthermore, if Figure 6-Figure 12As shown, one long side of the upper guide bar 220 and the lower guide bar 230 is a semicircular arc surface, and the other long side is an inverted V-shaped surface, so that the upper guide bar 220 and the lower guide bar 230 can open a large opening to circulate the coolant after being deflected at a small angle; the upper limit flow block 221 is provided on the straight side of the upper guide bar 220, and the cross section of the upper limit flow block 221 is a right-angled triangle and its right-angled side is tangent to one side of the semicircular arc surface. The upper limit flow block 221 contacts the bottom surface of the upper bayonet 211 and the upper guide bar 220 is limited to continue to deflect, so that it can be impacted and reset during the shaking of the coolant, thereby preventing a large amount of coolant from flowing back;

[0047] An upper baffle block 222 is provided on the other side of the semicircular arc surface of the upper guide bar 220. The upper baffle block 222 contacts the bottom surface of the upper clamping opening 211 and maintains a vertical blocking state when the upper guide bar 220 is impacted by the refluxed coolant, thereby completely preventing the coolant from refluxing.

[0048] A lower flow limiting block 231 is provided on the straight side surface of the lower guide strip 230. The cross-section of the lower flow limiting block 231 is a right-angled triangle and its right-angled side is tangent to one side of the semicircular surface. A lower flow blocking block 232 is provided on the other half of the semicircular surface of the lower guide strip 230. The function of the lower guide strip 230 is the same as that of the upper guide strip 220 and will not be repeated here.

[0049] It is worth noting that the arc surfaces of each pair of upper guide bars 220 and lower guide bars 230 are arranged opposite to each other, wherein each pair of upper limit flow blocks 221 and lower limit flow blocks 231 in the liquid inlet channel 102 are arranged toward the rear of the box body 100, so that the coolant input into the box body 100 can simultaneously impact the upper guide bars 220 and the lower guide bars 230 and flow toward the rear of the box body 100; each pair of upper limit flow blocks 221 and lower limit flow blocks 231 in the liquid outlet channel 103 are arranged toward the front of the box body 100, so that the coolant output from the box body 100 can simultaneously impact the upper guide bars 220 and the lower guide bars 230 and flow toward the front of the box body 100.

[0050] Furthermore, wire holes 213 are formed on the side surfaces of the opposite ends of the two rows of guide plates 210 , and the wires of the battery packs 150 pass through the wire holes 213 and converge at the DC terminal 110 .

[0051] In addition, a cooling and heat dissipation group 300 is provided on the outside of the box body 100 for circulating and draining the coolant inside and dissipating heat. The cooling and heat dissipation group 300 includes a pair of cooling boxes 310 distributed on the left and right sides of the box body 100, a heat dissipation pipe 320 placed in the cooling box 310, a water pump 330 for transporting the coolant between the heat dissipation pipe 320 and the box body 100, and a plurality of heat dissipation fins 340 connected to the vertical section of the heat dissipation pipe 320. The upper and lower ends of the heat dissipation fins 340 pass through the upper and lower surfaces of the cooling box 310. Since the box body 100 is installed at the bottom of the vehicle, the heat of the heat dissipation fins 340 is blown away by the airflow during the driving of the vehicle, thereby achieving the effect of heat dissipation of the coolant; a connecting pipe 321 is connected between the rear ends of the two heat dissipation pipes 320 to form a reflux of the coolant to replace and cool the coolant in the box body 100.

[0052] Specifically, a liquid pipe 130 is inserted at the front end of the box body 100 and located in front of the liquid inlet channel 102, wherein the front end of the water pump 330 on the left side is provided with an input end 331 sleeved with the heat dissipation pipe 320, and the side of the water pump 330 on the left side is provided with an output end 332 plugged with the liquid pipe 130 in front of the liquid inlet channel 102; that is, the cooled coolant is pumped into the liquid inlet channel 102 to replace the coolant that absorbs heat;

[0053] A liquid pipe 130 is inserted at the front end of the box body 100 and located just in front of the liquid outlet channel 103, wherein the front end of the right water pump 330 is provided with an input end 331 plugged into the liquid pipe 130 in front of the liquid outlet channel 103, and the side of the right water pump 330 is provided with an output end 332 sleeved with the heat dissipation pipe 320; that is, the coolant absorbing heat in the liquid outlet channel 103 is pumped and squeezed into the heat dissipation pipes 320 located on the right and left sides for cooling, and a liquid port 312 is opened on the top surface of the front end of the cooling box 310, so that the input end 331 and the output end 332 of the water pump 330 are inserted into the cooling box 310 and connected with the heat dissipation pipe 320.

[0054] Furthermore, a plurality of ventilation holes 311 are provided on the upper and lower surfaces of the cooling box 310 and at equal intervals from front to back. The heat sink 340 is tightly plugged into the ventilation holes 311. A slot 341 is provided in the middle of the heat sink 340 to be sleeved with the vertical section of the serpentine heat pipe 320, thereby increasing the time for the heat pipe 320 to circulate the coolant, and then the heat sink 340 is used to contact the heat pipe 320 with the maximum area, thereby achieving the effect of rapid heat dissipation.

[0055] Furthermore, the bottom surface of the box body 100 is fixedly connected to a support base 140 in the shape of a step arch by bolts, and the support base 140 is fixed to the vehicle chassis by bolts; the cooling box 310 is fixedly connected to the support base 140 by bolts, and an arc-shaped reinforcing plate 141 is provided in the middle of the support base 140, so that air can circulate at the bottom of the support base 140 to dissipate heat, and the reinforcing plate 141 is used to increase its supporting strength.

[0056] When the large-capacity battery box of a battery-swap heavy truck based on full immersion liquid cooling of the present invention is driving, the coolant in the box body 100 will sway back and forth. However, when the coolant in the liquid inlet channel 102 moves toward the rear of the box body 100, it will break through the upper flow blocks 221 and the lower flow blocks 231 inside it and flow to the rear. At this time, the coolant in the liquid outlet channel 103 will impact the upper flow blocks 221 and the lower flow blocks 231 inside it to form a vertical blocking state to prevent the coolant from flowing back to the rear, so that the water pump 330 on the left side can stably input the cooled coolant into the liquid inlet channel 102 to replace the coolant absorbed by the box body 100.

[0057] On the contrary, when the coolant in the liquid inlet channel 102 moves toward the front of the housing 100, it impacts the several upper flow blocks 221 and the lower flow blocks 231 inside it to form a vertical blocking state and prevent the coolant from flowing back to the front. At this time, the coolant in the liquid outlet channel 103 breaks through the several upper flow blocks 221 and the lower flow blocks 231 inside it and is able to flow forward so that the heat-absorbing coolant can be pumped out by the water pump 330 on the right side, so that the cooled coolant fills the housing 100 for cooling. That is to say, during the driving of the vehicle, the coolant in the housing 100 only circulates in one direction to replace the heat-absorbing coolant.

[0058] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-capacity battery box for a battery-swap heavy truck based on full immersion liquid cooling, comprising a box body (100), a coolant filled in the box body (100), and a double-row distributed battery pack (150) installed therein, wherein a DC terminal (110) and a communication port (120) are installed at the front end of the box body (100), characterized in that: A flow divider (101) is provided inside the box (100) and between the front and rear walls. A gap is left at the rear end of the flow divider (101). The flow divider (101) divides the inside of the box (100) into two left and right parts, which are a liquid inlet channel (102) and a liquid outlet channel (103). A flow guide group (200) is provided inside the liquid inlet channel (102) and the liquid outlet channel (103) and between each two adjacent battery groups (150). The group (200) comprises a guide plate (210) for blocking the channel, an upper guide strip (220) rotatably connected to the upper end of the guide plate (210), and a lower guide strip (230) rotatably connected to the lower end of the guide plate (210); wherein the plurality of guide groups (200) in the liquid inlet channel (102) guide the cooling liquid from front to back, and the plurality of guide groups (200) in the liquid outlet channel (103) guide the cooling liquid from back to front, thereby forming a unidirectional flow heat dissipation state; The guide plate (210) is provided with an upper snap-in (211) and a lower snap-in (212) at the upper and lower ends, respectively; the upper guide bar (220) is rotatably connected to the upper snap-in (211) via a pin; the lower guide bar (230) is rotatably connected to the lower snap-in (212) via a pin; the upper guide bar (220) and the upper snap-in (211) are of equal height; the lower guide bar (230) and the lower snap-in (212) are of equal height; and a fixing seat (151) having a channel structure is fixedly connected to the bottom of the battery pack (150); One long side of the upper guide strip (220) and the lower guide strip (230) is a semicircular arc surface, and the other long side is an inverted V-shaped surface; an upper flow limit block (221) is provided on the straight side of the upper guide strip (220); the cross section of the upper flow limit block (221) is a right-angled triangle, and its right-angled side is tangent to one side of the semicircular arc surface; an upper flow block (222) is provided on the other half of the semicircular arc surface of the upper guide strip (220); a lower flow limit block (231) is provided on the straight side of the lower guide strip (230); the cross section of the lower flow limit block (231) is a right-angled triangle, and its right-angled side is tangent to one side of the semicircular arc surface; and a lower flow block (232) is provided on the other half of the semicircular arc surface of the lower guide strip (230).

2. The large-capacity battery box for heavy trucks with battery replacement based on full immersion liquid cooling according to claim 1 is characterized in that: The arc surfaces of each pair of the upper guide strips (220) and the lower guide strips (230) are arranged opposite to each other, wherein each pair of upper limit flow blocks (221) and lower limit flow blocks (231) in the liquid inlet channel (102) are arranged toward the rear of the box body (100), and each pair of upper limit flow blocks (221) and lower limit flow blocks (231) in the liquid outlet channel (103) are arranged toward the front of the box body (100).

3. The large-capacity battery box for heavy-duty trucks with battery replacement based on full immersion liquid cooling according to claim 2 is characterized in that: Wire holes (213) are provided on the side surfaces of the opposite ends of the two rows of guide plates (210), and the wires of a plurality of battery packs (150) pass through the wire holes (213) and converge at the DC terminal (110).

4. The large-capacity battery box for heavy trucks with battery replacement based on full immersion liquid cooling according to claim 1 is characterized in that: The box (100) is provided with a cooling and heat dissipation group (300) on the outside thereof for circulating and draining the cooling liquid therein and dissipating heat. The cooling and heat dissipation group (300) comprises a pair of cooling boxes (310) distributed on the left and right sides of the box (100), a heat dissipation pipe (320) disposed in the cooling box (310), a water pump (330) for conveying the cooling liquid between the heat dissipation pipe (320) and the box (100), and a plurality of heat dissipation fins (340) sleeved with the vertical sections of the heat dissipation pipes (320), wherein the upper and lower ends of the heat dissipation fins (340) penetrate the upper and lower surfaces of the cooling box (310), and a connecting pipe (321) is connected between the rear ends of the two heat dissipation pipes (320).

5. The large-capacity battery box for heavy trucks with battery replacement based on full immersion liquid cooling according to claim 4 is characterized in that: A liquid passage pipe (130) is inserted at the front end of the box body (100) and located directly in front of the liquid inlet channel (102), wherein the front end of the left water pump (330) is provided with an input end (331) sleeved with the heat dissipation pipe (320), and the side of the left water pump (330) is provided with an output end (332) inserted with the liquid passage pipe (130) in front of the liquid inlet channel (102).

6. The large-capacity battery box for heavy trucks with battery replacement based on full immersion liquid cooling according to claim 5 is characterized in that: A liquid passage tube (130) is inserted at the front end of the box (100) and located directly in front of the liquid outlet channel (103), wherein the front end of the right water pump (330) is provided with an input end (331) plugged into the liquid passage tube (130) in front of the liquid outlet channel (103), and the side of the right water pump (330) is provided with an output end (332) sleeved with the heat dissipation pipe (320).

7. The large-capacity battery box for heavy trucks with battery replacement based on full immersion liquid cooling according to claim 6 is characterized in that: A plurality of vents (311) are provided on the upper and lower surfaces of the cooling box (310) at equal intervals from front to back, the heat sink (340) is tightly plugged into the vents (311), and a slot (341) is provided in the middle of the heat sink (340) for sleeve connection with a vertical section of a serpentine heat sink (320).

8. The large-capacity battery box for heavy trucks with battery replacement based on full immersion liquid cooling according to claim 7 is characterized in that: A support seat (140) in the shape of a stepped arch is fixedly connected to the bottom surface of the box body (100), and an arc-shaped reinforcement plate (141) is provided in the middle of the support seat (140).

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