PCABS alloy material battery module protection structure and production process thereof

Abstract

The invention relates to the technical field of batteries, in particular to a PCABS alloy material battery module protection structure and a production process thereof. The outer wall of the fixing mechanism is in sliding connection with the outer wall of the battery pack; the outer wall of the bandage is in sliding connection with the outer wall of the fixing mechanism; the top end of the limiting mechanism is in sliding connection with the bottom end of the battery pack, the fixing mechanism comprises an end plate, module mounting holes are symmetrically formed in the two ends of the inner wall of the end plate, busbar mounting holes are symmetrically formed in the top end of the end plate, and a wire binding buckle is fixedly connected to the middle of the top end of the end plate. The battery module is used for avoiding the situations of loosening, battery cell liquid leakage, welding point falling, short circuit, fire and the like of a module in a battery box in the use process of a battery. The safety of the whole system is improved, one-time forming is achieved through a mold, the forming process is simple and reliable, and cost is low. The module forming process is simple and fast, and the labor cost is greatly saved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a PCABS alloy material battery module protection structure and a production process thereof. Background Art

[0002] At present, the global economy is facing a huge energy crisis. Energy conservation, emission reduction and the development of new energy sources that can replace fossil fuels are urgent needs of mankind. Faced with increasingly stringent exhaust emission standards in China and even the world and future energy crises, major automobile manufacturers are developing low-emission new energy technologies to adapt to this development trend. Among them, pure electric vehicles are one of the areas that major automobile companies are vigorously developing.

[0003] In the existing technology, with the development of the domestic new energy industry, the batteries of various industries in China are transforming to new energy. The first to transform to new energy include commercial vehicles, passenger vehicles, logistics vehicles in special vehicles, etc. The application scenarios of lithium batteries are becoming more and more extensive, and in the design of lithium battery packs, square batteries are increasingly widely used due to their high safety performance and low cost of group BOM auxiliary materials. Traditional module end plates generally use iron, aluminum, and plastic parts. When used in vehicles, once the use environment becomes worse, the burden of module use is increased. The module is prone to loosening, battery leakage, welding point detachment, short circuit, fire, etc. in the battery box, which poses a great risk to the battery pack. How to avoid it is very important. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical solution adopted by the present invention to solve the technical problems is: a PCABS alloy material battery module protection structure, comprising: a battery pack; a fixing mechanism, the outer wall of the fixing mechanism is slidably connected to the outer wall of the battery pack; a strap, the outer wall of the strap is slidably connected to the outer wall of the fixing mechanism; a limiting mechanism, the top of the limiting mechanism is slidably connected to the bottom end of the battery pack; the fixing mechanism comprises an end plate, the inner wall of the end plate is symmetrically provided with module mounting holes at both ends, the top of the end plate is symmetrically provided with bus mounting holes, and the middle part of the top of the end plate is fixedly connected with a wire buckle.

[0005] The present invention is further configured such that the number of the fixing mechanisms is two and they are symmetrically arranged at both ends of the outer wall of the battery pack, the outer wall of the end plate is slidably connected to the outer wall of the battery pack, the outer wall of the strap is slidably connected to the outer wall of the end plate, and the outer wall of the strap is slidably connected to the outer wall of the battery pack. The battery pack is protected by arranging the end plate to prevent the module from loosening in the battery box, the battery cell from leaking, the welding point from falling off, short circuiting, catching fire, etc. during the use of the battery.

[0006] The present invention is further configured such that the limiting mechanism includes a base, the outer wall of the base is provided with a sliding groove, the inner wall of the base is symmetrically slidably connected with sliders at both ends, the inner wall of the base is rotatably connected with a bidirectional screw, the inner walls at both ends of the slider are slidably connected with a support mechanism, the outer wall of the support mechanism is slidably connected with the outer wall of the sliding groove, and the outer wall of the base is provided with a handwheel. The outer wall of the base is slidably connected with the outer wall of the end plate, the outer wall of the bidirectional screw is threadedly connected with the inner wall of the slider, the end of the bidirectional screw away from the slider passes through the base and extends to the outside of the base, and the end of the bidirectional screw extending to the outside of the base is fixedly connected to the outer wall of the handwheel. The handwheel is turned to drive the bidirectional screw to rotate, so that the slider slides in the base and drives the fixed cylinder sleeved on its inner wall to move.

[0007] The present invention is further configured such that the support mechanism includes a fixed cylinder, a pressing block is slidably connected to the top of the inner wall of the fixed cylinder, a pressing rod is fixedly connected to the bottom end of the pressing block, a fixed block is fixedly connected to the middle of the inner wall of the fixed cylinder, and a pulling spring is fixedly connected to the bottom end of the fixed block. The outer wall of the pressing rod is slidably connected to the inner wall of the fixed block, the bottom end of the pulling spring is fixedly connected to the outer wall of the pressing rod, the bottom end of the outer wall of the fixed cylinder is slidably connected to the inner wall of the slider, and the outer wall of the fixed cylinder is slidably connected to the outer wall of the sliding groove. Press the pressing block downward to make it slide downward in the fixed cylinder and drive the pressing rod to move downward, release the pressing block, and under the action of the pulling spring, pull the pressing rod upward to move back to its original position.

[0008] The present invention is further configured such that the inner wall at the bottom end of the fixed cylinder is fixedly connected to a guide rod, the outer wall of the guide rod is slidably connected to a block, the bottom end of the outer wall of the block is fixedly connected to a pull rod, and the end of the pull rod away from the block is rotatably connected to the bottom end of the pressing rod. The block is engaged with the slider, and the outer wall of the fixed cylinder is slidably connected to the inner wall of the module mounting hole. The pressing rod moves downward, and through the connection of the pull rod, pulls the block to rotate on the guide rod, so that the block is disengaged from the engagement with the slider, and the fixed cylinder can be disengaged from the slider.

[0009] The present invention is further provided as a production process of a PCABS alloy material battery module protection structure, comprising the following steps: Step 1, material preparation: pour carbonate polyester and acrylonitrile-butadiene-styrene copolymer into a blender in a weight ratio of :, and stir evenly to obtain injection molding raw materials; Step 2: Injection molding operation: Put the injection molding raw material into the injection molding machine, which includes an injection device, a mold and a cooling system. The injection molding machine heats and melts the plastic raw material, and then injects the molten plastic into the mold through the injection device; Step 3: Cooling and curing: After the injection molding machine completes the injection, the cooling system delivers cold air into the injection molding machine, thus completing the injection molding of the end plate.

[0010] The beneficial effects of the present invention are as follows: 1. The present invention provides an end plate to prevent the module from loosening in the battery box, battery cell leakage, welding point detachment, short circuit, fire, etc. during use of the battery. The safety of the entire system is improved. The molding process is simple, reliable and low-cost through one-time molding of the mold. The module molding process is simple and fast, which greatly saves labor costs.

[0011] 2. The end plate of the present invention is made of carbonate polyester and acrylonitrile-butadiene-styrene copolymer, has good strength and toughness, can withstand large force and impact, has a high heat deformation temperature, can be used in high temperature environment, and can maintain good toughness and strength in low temperature environment, is not easy to wear and scratch, has strong chemical properties such as alkali resistance, oil resistance, solvent resistance, etc., has good insulation, and is less affected by temperature, humidity and frequency.

[0012] 3. The present invention sets a supporting mechanism, installs the fixing cylinder and the end plate, and then places the battery pack on the base. The hand wheel is turned to drive the fixedly connected bidirectional screw to rotate, so that the sliders with threads at both ends slide in the base, and drive the fixing cylinder sleeved on the inner wall to move, so that the end plate moves until the battery pack on the base is clamped and fixed, which is convenient for bundling and fixing the battery pack.

[0013] 4. The present invention sets a fixing cylinder, presses the pressing block downward to drive the pressing rod to move downward, and pulls the clamping block to rotate on the guide rod through the pull rod, so that the clamping block is disengaged from the clamping connection with the slider, so that the fixing cylinder can be disengaged from the slider, and pulled upward to disengage from the end plate, so that the end plate is disengaged from the limiting mechanism, which makes it easy for the fixed battery pack and the end plate to be disengaged from the base, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the present invention; Figure 2 It is a schematic diagram of the structure of the battery pack of the present invention; Figure 3 It is a structural schematic diagram of the fixing mechanism of the present invention; Figure 4 It is a structural schematic diagram of the limiting mechanism of the present invention; Figure 5 is a cross-sectional view of the limiting mechanism of the present invention; Figure 6 It is a structural schematic diagram of the support mechanism of the present invention; Figure 7 The present invention Figure 6A magnified view of the structure at A.

[0015] In the figure: 1. battery pack; 2. fixing mechanism; 21. end plate; 22. module mounting hole; 23. bus mounting hole; 24. wire tie buckle; 3. limiting mechanism; 31. base; 32. sliding groove; 33. hand wheel; 34. supporting mechanism; 341. fixing cylinder; 342. pressing block; 343. pressing rod; 344. fixing block; 345. pulling spring; 346. clamping block; 347. guide rod; 348. pulling rod; 35. bidirectional screw; 36. slider; 4. binding strap. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. Example

[0017] See also Figure 1 - Figure 7 The present invention provides a technical solution: a PCABS alloy material battery module protection structure, comprising: a battery pack 1; a fixing mechanism 2, the outer wall of the fixing mechanism 2 is slidably connected to the outer wall of the battery pack 1; a strap 4, the outer wall of the strap 4 is slidably connected to the outer wall of the fixing mechanism 2; a limiting mechanism 3, the top of the limiting mechanism 3 is slidably connected to the bottom of the battery pack 1; the fixing mechanism 2 comprises an end plate 21, the inner wall of the end plate 21 is symmetrically provided with module mounting holes 22, the top of the end plate 21 is symmetrically provided with bus mounting holes 23, and the middle of the top of the end plate 21 is fixedly connected with a wire buckle 24.

[0018] The number of the fixing mechanisms 2 is two, and they are symmetrically arranged at both ends of the outer wall of the battery pack 1. The outer wall of the end plate 21 is slidably connected to the outer wall of the battery pack 1, and the outer wall of the strap 4 is slidably connected to the outer wall of the end plate 21, and the outer wall of the strap 4 is slidably connected to the outer wall of the battery pack 1. The battery pack 1 is protected by the end plate 21 to prevent the module from loosening in the battery box, leakage of the battery cell, detachment of the welding point, short circuit, fire, etc. during the use of the battery.

[0019] The limiting mechanism 3 includes a base 31, the outer wall of the base 31 is provided with a sliding groove 32, the inner wall of the base 31 is symmetrically slidably connected with a slider 36 at both ends, the inner wall of the base 31 is rotatably connected with a bidirectional screw 35, the inner wall of both ends of the slider 36 is slidably connected with a support mechanism 34, the outer wall of the support mechanism 34 is slidably connected with the outer wall of the sliding groove 32, and the outer wall of the base 31 is provided with a hand wheel 33. The outer wall of the base 31 is slidably connected with the outer wall of the end plate 21, the outer wall of the bidirectional screw 35 is threadedly connected with the inner wall of the slider 36, the end of the bidirectional screw 35 away from the slider 36 penetrates the base 31 and extends to the outside of the base 31, and the end of the bidirectional screw 35 extending to the outside of the base 31 is fixedly connected with the outer wall of the hand wheel 33. The hand wheel 33 is rotated to drive the fixedly connected bidirectional screw 35 to rotate, so that the slider 36 with threads connected at both ends slides on the inner wall of the base 31, and drives the fixed cylinder 341 sleeved on the inner wall to move, so that the end plate 21 moves until the battery pack 1 on the base 31 is clamped and fixed.

[0020] The support mechanism 34 includes a fixed cylinder 341, a pressing block 342 is slidably connected to the top of the inner wall of the fixed cylinder 341, a pressing rod 343 is fixedly connected to the bottom of the pressing block 342, a fixed block 344 is fixedly connected to the middle of the inner wall of the fixed cylinder 341, and a pulling spring 345 is fixedly connected to the bottom of the fixed block 344. The outer wall of the pressing rod 343 is slidably connected to the inner wall of the fixing block 344, the bottom end of the pulling spring 345 is fixedly connected to the outer wall of the pressing rod 343, the bottom end of the outer wall of the fixed cylinder 341 is slidably connected to the inner wall of the slider 36, and the outer wall of the fixed cylinder 341 is slidably connected to the outer wall of the sliding groove 32. The pressing block 342 is pressed downward to make it slide downward on the inner wall of the fixed cylinder 341, and drive the fixedly connected pressing rod 343 to move downward. When the pressing block 342 is no longer pressed, the fixedly connected pressing rod 343 is pulled upward to be reset under the action of the pulling spring 345 fixedly connected to the fixed block 344, and drive the pulling rod 348 to move upward, so that the clamping block 346 is rotated and reset on the guide rod 347, and is clamped with the slider 36 again, thereby completing the fixation of the fixed cylinder 341 and the slider 36.

[0021] The inner wall of the bottom end of the fixed cylinder 341 is fixedly connected with a guide rod 347, and the outer wall of the guide rod 347 is slidably connected with a block 346. The bottom end of the outer wall of the block 346 is fixedly connected with a pull rod 348, and the end of the pull rod 348 away from the block 346 is rotatably connected to the bottom end of the pressing rod 343. The block 346 is engaged with the slider 36, and the outer wall of the fixed cylinder 341 is slidably connected with the inner wall of the module mounting hole 22. The pressing rod 343 moves downward, and through the connection of the pull rod 348, the rotatably connected block 346 is pulled to rotate on the outer wall of the guide rod 347, so that the block 346 is disengaged from the engagement with the slider 36, so that the fixed cylinder 341 can be disengaged from the slider 36, and pulled upward to disengage from the end plate 21, so that the end plate 21 is disengaged from the limiting mechanism 3.

[0022] A production process for a PCABS alloy material battery module protection structure is used to produce an end plate in a PCABS alloy material battery module protection structure, comprising the following steps: Step 1, material preparation: pour carbonate polyester and acrylonitrile-butadiene-styrene copolymer into a mixer in a weight ratio of 2:8, and stir evenly to obtain an injection molding raw material; Step 2: Injection molding operation: Put the injection molding raw material into the injection molding machine, which includes an injection device, a mold and a cooling system. The injection molding machine heats and melts the plastic raw material, and then injects the molten plastic into the mold through the injection device; Step 3, cooling and curing: After the injection molding machine completes the injection, the cooling system delivers cold air into the injection molding machine, so that the injection molding of the end plate 21 is completed.

[0023] The end plate is made of carbonate polyester and acrylonitrile-butadiene-styrene copolymer. It has good strength and toughness, can withstand large forces and impacts, has a high heat deformation temperature, can be used in high temperature environments, and can maintain good toughness and strength in low temperature environments. It is not easy to wear and scratch, has strong chemical properties such as alkali resistance, oil resistance, solvent resistance, etc., has good insulation, and is less affected by temperature, humidity and frequency.

[0024] Working principle: When in use, the injection molded fixing mechanism 2 is installed on the limiting mechanism 3, and the supporting mechanisms 34 at both ends of the base 31 are used to make the fixing cylinder 341 enter the module mounting hole 22 opened on the end plate 21, so that the end plate 21 can move with the fixing cylinder 341, and then the battery pack 1 is placed on the base 31 so that it is between the two end plates 21, and the hand wheel 33 is turned through the limiting mechanism 3 to drive the fixedly connected bidirectional screw 35 to rotate, so that the slider 36 threaded at both ends slides in the base 31, and drives the fixing cylinder 341 sleeved on its inner wall to move, so that the end plate 21 moves until the battery pack 1 on the base 31 is clamped and fixed, and then the end plate 21 and the battery pack 1 are tied and fixed with the strap 4, and the end plate 21 and the battery pack 1 are fixed, and the battery pack 1 is protected to prevent the module from loosening, battery cell leakage, welding point detachment, short circuit, fire, etc. in the battery box during use; After the fixation is completed, when the fixed battery pack 1 and the end plate 21 need to be removed, the pressing block 342 is pressed downward to slide downward in the fixing cylinder 341, and the pressing rod 343 is driven to move downward, and the clamping block 346 is pulled to rotate on the guide rod 347 through the connection of the pull rod 348, so that the clamping block 346 is disengaged from the clamping connection with the slider 36, so that the fixing cylinder 341 can be disengaged from the slider 36, and pulled upward to disengage from the end plate 21, so that the end plate 21 is disengaged from the limiting mechanism 3, so that the fixed battery pack 1 and the end plate 21 can be easily disengaged from the base 31, At this time, the fixing cylinder 341 is installed into the slider 36, and under the action of the pulling spring 345 on the fixing block 344, the pressing rod 343 moves upward and resets, and drives the pulling rod 348 to move upward, so that the clamping block 346 rotates and resets on the guide rod 347, and is clamped with the slider 36 again, thereby completing the fixation of the fixing cylinder 341 and the slider 36, which is convenient for the subsequent fixation of the battery pack 1 and the end plate 21; when the battery pack 1 and the end plate 21 are fixed, the bus and the battery pack 1 are fixed through the bus mounting hole 23, and the wire buckle 24 is used for the insertion of the steel belt, which is convenient for the vertical fixation of the battery pack 1.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A PCABS alloy material battery module protection structure, It is characterized in that include: Battery pack (1); A fixing mechanism (2), wherein an outer wall of the fixing mechanism (2) is slidably connected to an outer wall of the battery pack (1); A binding belt (4), wherein an outer wall of the binding belt (4) is slidably connected to an outer wall of the fixing mechanism (2); A limiting mechanism (3), the top end of the limiting mechanism (3) being slidably connected to the bottom end of the battery pack (1); The fixing mechanism (2) comprises an end plate (21), the inner wall of the end plate (21) having module mounting holes (22) symmetrically provided at both ends, the top of the end plate (21) having busbar mounting holes (23) symmetrically provided, and a wire tie buckle (24) fixedly connected to the middle of the top of the end plate (21).

2. A PCABS alloy battery module protection structure according to claim 1, Features: The number of the fixing mechanisms (2) is two and they are symmetrically arranged at the two ends of the outer wall of the battery pack (1); the outer wall of the end plate (21) is slidably connected to the outer wall of the battery pack (1); the outer wall of the binding strap (4) is slidably connected to the outer wall of the end plate (21); and the outer wall of the binding strap (4) is slidably connected to the outer wall of the battery pack (1).

3. A PCABS alloy battery module protection structure according to claim 1, Features: The limiting mechanism (3) comprises a base (31), the outer wall of the base (31) is provided with a sliding groove (32), the inner wall of the base (31) is symmetrically slidably connected with sliders (36) at both ends, the inner wall of the base (31) is rotatably connected with a bidirectional screw (35), the inner walls of both ends of the slider (36) are slidably connected with a supporting mechanism (34), the outer wall of the supporting mechanism (34) is slidably connected with the outer wall of the sliding groove (32), and the outer wall of the base (31) is provided with a hand wheel (33).

4. A PCABS alloy material battery module protection structure according to claim 3, Features: The outer wall of the base (31) is slidably connected to the outer wall of the end plate (21); the outer wall of the bidirectional screw (35) is threadedly connected to the inner wall of the slider (36); one end of the bidirectional screw (35) away from the slider (36) passes through the base (31) and extends to the outside of the base (31); and one end of the bidirectional screw (35) extending to the outside of the base (31) is fixedly connected to the outer wall of the hand wheel (33).

5. A PCABS alloy material battery module protection structure according to claim 3, Features: The support mechanism (34) comprises a fixed cylinder (341), the top end of the inner wall of the fixed cylinder (341) is slidably connected to a pressing block (342), the bottom end of the pressing block (342) is fixedly connected to a pressing rod (343), the middle part of the inner wall of the fixed cylinder (341) is fixedly connected to a fixed block (344), and the bottom end of the fixed block (344) is fixedly connected to a pulling spring (345).

6. A PCABS alloy material battery module protection structure according to claim 5, Features: The outer wall of the pressing rod (343) is slidably connected to the inner wall of the fixing block (344), the bottom end of the pulling spring (345) is fixedly connected to the outer wall of the pressing rod (343), the bottom end of the outer wall of the fixing cylinder (341) is slidably connected to the inner wall of the sliding block (36), and the outer wall of the fixing cylinder (341) is slidably connected to the outer wall of the sliding groove (32).

7. A PCABS alloy material battery module protection structure according to claim 6, Features: The inner wall at the bottom end of the fixed cylinder (341) is fixedly connected to a guide rod (347), the outer wall of the guide rod (347) is slidably connected to a clamping block (346), the bottom end of the outer wall of the clamping block (346) is fixedly connected to a pull rod (348), and one end of the pull rod (348) away from the clamping block (346) is rotatably connected to the bottom end of the pressing rod (343).

8. A PCABS alloy battery module protection structure according to claim 7, Features: The clamping block (346) is clamped with the sliding block (36), and the outer wall of the fixing cylinder (341) is slidably connected with the inner wall of the module mounting hole (22).

9. A production process for a PCABS alloy battery module protection structure, used for producing the end plate in the PCABS alloy battery module protection structure described in claims 1-8, It is characterized in that The following steps are involved: Step 1, material preparation: pour carbonate polyester and acrylonitrile-butadiene-styrene copolymer into a mixer in a weight ratio of 2:8, and stir evenly to obtain an injection molding raw material; Step 2: Injection molding operation: Put the injection molding raw material into the injection molding machine, which includes an injection device, a mold and a cooling system. The injection molding machine heats and melts the plastic raw material, and then injects the molten plastic into the mold through the injection device; Step 3: Cooling and curing: After the injection molding machine completes the injection, the cooling system delivers cold air into the injection molding machine, thereby completing the injection molding of the end plate (21).

Images