Power battery structural member with tab charging and discharging positioning function

Abstract

The invention discloses a power battery structural member with a tab charging and discharging positioning function, and relates to the technical field of battery charging and discharging, the power battery structural member comprises a supporting mechanism, the supporting mechanism comprises a shell, an electrode material is fixedly connected in the shell, the top end of the electrode material is fixedly connected with a communication frame, and the top end of the communication frame is fixedly connected with positive and negative tabs; an electrode material is arranged in the shell, a cooling bin fixedly connected with the shell is arranged at the bottom end of the electrode material, the fixing mechanism comprises a transverse frame for transversely positioning the tab during charging and discharging, the transverse frame is arranged at the top end of the shell, and the fixing mechanism is used for positioning the tab of the power battery during charging and discharging. According to the present invention, the self-expansion of the motor material due to the charge-discharge chemical reaction can be prevented so as to further cause the tab position offset, the instable contact of the tab and the motor material can be avoided so as to aggravate the material wear, the cycle life of the battery can be effectively prolonged, and the resistance increase caused by the poor contact can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of battery charging and discharging, and in particular to a power battery structural component with a tab charging and discharging positioning function. Background Art

[0002] Tab batteries connect electrodes and circuits by making two protruding metal pieces, namely tabs, at both ends of the electrode material. The tab design can effectively isolate the electrode material from the electrolyte, thereby reducing the risk of short circuit and leakage. At the same time, the tab can also provide sufficient contact area, allowing the electrode material to be efficiently connected to the circuit.

[0003] However, the existing tab batteries still have the following defects:

[0004] First, when the existing tab battery is charged and discharged, the internal electrode material will be affected by the chemical reaction and its own volume will change. The electrode material is connected to the tab, and the change in the material volume will cause the position of the tab to shift, and the tab will move away from its original position. The position shift causes unstable contact between the electrode material and the current collector, aggravates the wear of the electrode material, and shortens the cycle life of the battery. In addition, poor contact between the tab and the electrode material will increase the contact resistance, affect the conductivity and charge and discharge efficiency, and reduce the overall performance of the battery. Finally, unstable contact may cause uneven current distribution during the charge and discharge process of the battery, affecting the charge and discharge performance and capacity of the battery.

[0005] Secondly, the increase in the charge and discharge time inside the battery will inevitably cause the electrode material to continue to heat up, and the continuous accumulation of heat will continue to amplify safety hazards. High temperature will accelerate the degradation of electrode materials, including structural changes in positive electrode materials and lithium loss in negative electrode materials, which will lead to a decrease in battery capacity and shortened cycle life. In addition, the electrolyte will decompose and produce gas at high temperatures. The accumulation of these gases inside the battery may cause increased pressure and increase the risk of explosion. Finally, the increase in internal temperature may lead to thermal runaway, which is an uncontrollable chain reaction that will cause the battery to burn. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a power battery structure with a tab charging and discharging positioning function, which can effectively solve the battery charging and discharging problems in the prior art.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] The present invention discloses a power battery structure with a tab charging and discharging positioning function, comprising a supporting mechanism, the supporting mechanism comprising a shell, the inside of the shell is fixedly connected with an electrode material, the top of the electrode material is fixedly connected with a connecting frame, the top of the connecting frame is fixedly connected with positive and negative tabs, the bottom of the electrode material is provided with a cooling bin fixedly connected to the shell, the bottom of the connecting frame is provided with a fixing mechanism, and the bottom of the electrode material is provided with a cooling mechanism;

[0011] The fixing mechanism includes a horizontal frame for horizontally positioning the pole tab during charging and discharging, the horizontal frame is arranged at the top of the shell, and the fixing mechanism is used to position the pole tab of the power battery being charged and discharged;

[0012] The cooling mechanism comprises a temperature-sensitive material block that changes its volume by sensing temperature and heat changes. The temperature-sensitive material block is located at the bottom of the electrode material. The cooling mechanism is used to cool down and absorb heat from the heated electrode material.

[0013] Furthermore, the length and width of the electrode material are adapted to the outer shell, the connecting frame is hollow and perpendicular to the electrode material, and two positive and negative electrode ears are provided and symmetrically distributed at the left and right ends of the connecting frame.

[0014] Furthermore, the fixing mechanism is provided with six groups and each group of fixing mechanisms is located in the middle of the two electrode materials, the fixing mechanism includes a disc one, the disc one is rotatably connected to the bottom end of the connecting frame, the lower surface of the disc one is rotatably connected to two connecting shafts one, the end of the connecting shaft one away from the disc one is rotatably connected to a support plate one, and the length of the two support plates one is consistent with the width of the electrode material.

[0015] Furthermore, a long tube is fixedly connected to the center of the disc one, the bottom end of the long tube extends into the interior of the electrode material and is fixedly connected to the disc two, the lower surface of the disc two is rotatably connected to two connecting shafts two, the end of the connecting shaft two away from the disc two is rotatably connected to a support plate two, the end of the support plate two away from the connecting shaft two is fixedly connected to an extrusion plate, and the extrusion plate and the electrode material are in conflict.

[0016] Furthermore, a folding plate is provided on the side away from each other of the two positive and negative pole ears, the middle part of the folding plate is rotatably connected to the connecting frame, the top end of the folding plate extends out of the upper surface of the connecting frame, the bottom end of the folding plate is located inside the connecting frame, and the two folding plates are rotatably connected to the horizontal frame on the side away from each other.

[0017] Furthermore, the cooling mechanism includes two semi-enclosed boxes, the two semi-enclosed boxes are fixedly connected to the interior of the cooling bin, the interior of the powder tank 2 is fixedly connected to the temperature-sensitive material block, a spring 1 is fixedly connected to one side of the two temperature-sensitive material blocks away from each other, and a push plate is fixedly connected to one end of the spring 1 away from the temperature-sensitive material block.

[0018] Furthermore, a sphere is fixedly connected to the bottom end of the push plate, a long box is slidably connected to the outside of the sphere, the long box is located at the bottom end of the semi-closed box and is fixedly connected to the cooling bin, a spring is fixedly connected to one side of the sphere away from the semi-closed box, and an end of the spring away from the sphere is also fixedly connected to the long box.

[0019] Furthermore, the semi-enclosed box and the long box one are symmetrically provided with long box two on both sides, the long box two is also fixedly connected to the cooling bin, the interior of the long box two is slidably connected with powder trough one, the interior of the long box two is also slidably connected with powder trough two, the powder trough one and the powder trough two are staggered, the side of the powder trough one away from the powder trough two is rotatably connected with a lever one, the lever one passes through the long box two and the long box one and extends into the interior of the long box one.

[0020] Furthermore, the side of the powder trough 2 away from the powder trough 1 is rotatably connected with a lever 2, and the lever 2 also passes through the long box 2 and the long box 1 and extends into the long box 1. The lever 1 and the lever 2 are both located on the side of the ball away from the semi-closed box.

[0021] (III) Beneficial effects

[0022] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0023] 1. By providing a support plate 1, a long tube and a support plate 2, the electrode material expands itself during charge and discharge, pushing the long box 2 to move, and the long box 2 rotates to connect the spring 2 and the long box 1 to move in the direction of approaching each other. At the same time, the disc 2 deflects at a small angle, and the disc 1 connected to the top through the long tube also deflects, and rotates the connecting shaft 1 and the support plate 1 away from each other, and finally the support plate 1 hits the inner wall of the shell. The device can position the pole ear inside the battery to prevent the motor material from expanding itself due to the chemical reaction of charge and discharge, thereby causing the pole ear position to shift, avoiding unstable contact between the pole ear and the motor material and aggravating the wear of the material, effectively extending the cycle life of the battery, and in addition, it can avoid the increase in resistance caused by poor contact, prevent the impact on the charge and discharge efficiency, and improve the overall performance of the battery, and finally avoid the unstable contact of the pole ear and the uneven current distribution during charge and discharge.

[0024] 2. By providing a spherical ball, a powder trough 1 and a lever 1, the temperature-sensitive material block in the semi-enclosed box expands and enlarges due to the heat, driving the fixedly connected spring 1 and the push plate to move toward the outside of the semi-enclosed box, and the spherical ball fixedly connected to the bottom of the push plate will eventually hit the lever 1 and the lever 2. The powder trough 1 and the powder trough 2 slidingly connected in the long box 2 both contain salt powder. When the lever 1 and the lever 2 are moved to cause the powder trough 1 and the powder trough 2 to be misaligned, the powder mixture releases a small amount of heat-absorbing gas to cool down. The device can cool down the motor material that is being charged and discharged and generates more heat, ensure that the temperature will not be too high to prevent accelerated aging of the motor material, and avoid lithium loss at the positive and negative electrodes, avoid battery capacity reduction and shortened life due to temperature increase, and avoid electrolyte decomposition and gas generation at high temperature, effectively reducing the risk of explosion. Finally, it prevents uncontrollable chain reactions such as thermal runaway from occurring in the internal material, and prevents battery combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a front view three-dimensional structural diagram of the present invention;

[0027] Figure 2 For the present invention Figure 1 The local enlarged structure diagram at A in the middle;

[0028] Figure 3 It is a front cross-sectional structural diagram of the present invention;

[0029] Figure 4 It is a cross-sectional structural diagram of another viewing angle in the present invention;

[0030] Figure 5 It is a cross-sectional structural diagram of the positive and negative electrode ears and the connecting frame in the present invention;

[0031] Figure 6 It is a three-dimensional structural diagram of the fixing mechanism in the present invention;

[0032] Figure 7 For the present invention Figure 6 The local enlarged structure diagram at B in the middle;

[0033] Figure 8 It is a three-dimensional structural diagram of the cooling mechanism in the present invention;

[0034] Fig. 9 For the present invention Figure 8The local enlarged structure diagram at C in the middle;

[0035] Fig.10 It is a front view cross-sectional three-dimensional structural diagram of the cooling mechanism in the present invention;

[0036] Fig.11 It is a top view of the cross-sectional three-dimensional structure of the cooling mechanism in the present invention.

[0037] The reference numerals in the figure represent, respectively, 100, support mechanism; 101, housing; 102, electrode material; 103, positive and negative tabs; 104, connecting frame; 105, cooling chamber;

[0038] 200, fixing mechanism; 201, disc 1; 202, connecting shaft 1; 203, supporting plate 1; 204, long cylinder; 205, disc 2; 206, connecting shaft 2; 207, supporting plate 2; 208, extrusion plate; 209, folding plate; 210, horizontal frame;

[0039] 300, cooling mechanism; 301, semi-enclosed box; 302, temperature-sensitive material block; 303, spring 1; 304, push plate; 305, ball; 306, long box 1; 307, spring 2; 308, long box 2; 309, powder trough 1; 310, powder trough 2; 311, lever 1; 312, lever 2. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The present invention will be further described below in conjunction with the embodiments.

[0042] A power battery structure with a tab charging and discharging positioning function in this embodiment, such as Figure 1 - Fig.11 As shown, it includes a support mechanism 100, which includes a shell 101, an electrode material 102 is fixedly connected inside the shell 101, a connecting frame 104 is fixedly connected to the top of the electrode material 102, a positive and negative electrode ears 103 are fixedly connected to the top of the connecting frame 104, a cooling chamber 105 fixedly connected to the shell 101 is provided at the bottom of the electrode material 102, a fixing mechanism 200 is provided at the bottom of the connecting frame 104, and a cooling mechanism 300 is provided at the bottom of the electrode material 102;

[0043] The fixing mechanism 200 includes a horizontal frame 210 for laterally positioning the tabs during charging and discharging. The horizontal frame 210 is disposed at the top of the housing 101 . The fixing mechanism 200 is used to position the tabs of the power battery being charged and discharged.

[0044] As a preferred implementation in this embodiment, Figure 1 - Fig.11 As shown, the length and width of the electrode material 102 are adapted to the housing 101 , the connecting frame 104 is hollow and perpendicular to the electrode material 102 , and two positive and negative tabs 103 are provided and symmetrically distributed at the left and right ends of the connecting frame 104 .

[0045] As a preferred implementation in this embodiment, Figure 1 - Fig.11 As shown, six groups of fixing mechanisms 200 are provided and each group of fixing mechanisms 200 is located in the middle of two electrode materials 102, and the fixing mechanisms 200 include a disc 201, which is rotatably connected to the bottom end of the connecting frame 104, and the lower surface of the disc 201 is rotatably connected to two connecting shafts 202, and one end of the connecting shaft 202 away from the disc 201 is rotatably connected to a support plate 203, and the length of the two support plates 203 is consistent with the width of the electrode material 102.

[0046] In this embodiment, Figure 1 - Fig.11 As shown, a long cylinder 204 is fixedly connected to the center of the disc 1 201, the bottom end of the long cylinder 204 extends into the interior of the electrode material 102 and is fixedly connected to a disc 2 205, the lower surface of the disc 205 is rotatably connected to two connecting shafts 206, the end of the connecting shaft 206 away from the disc 205 is rotatably connected to a support plate 207, the end of the support plate 207 away from the connecting shaft 206 is fixedly connected to an extrusion plate 208, and the extrusion plate 208 is in conflict with the electrode material 102.

[0047] In this embodiment, Figure 1 - Fig.11 As shown, a folding plate 209 is further provided on the side where the two positive and negative pole ears 103 are away from each other, the middle part of the folding plate 209 is rotatably connected to the connecting frame 104, the top end of the folding plate 209 extends out of the upper surface of the connecting frame 104, and the bottom end of the folding plate 209 is located inside the connecting frame 104, and the two folding plates 209 are rotatably connected to the cross frame 210 on the side away from each other.

[0048] Compared with the existing technology, the device can position the tabs inside the battery to prevent the motor material from expanding due to the chemical reaction of charging and discharging, which in turn causes the tab position to shift, avoids unstable contact between the tab and the motor material and aggravates the wear of the material, and effectively extends the cycle life of the battery. In addition, it can avoid the increase in resistance caused by poor contact, prevent the impact on charging and discharging efficiency, and improve the overall performance of the battery. Finally, it can avoid the unstable contact of the tab and the uneven current distribution during charging and discharging.

[0049] In other aspects, this embodiment also provides a heat absorption structure, such as Figure 1 - Fig.11 As shown, the cooling mechanism 300 includes a temperature-sensitive material block 302 that changes its volume by sensing temperature and heat changes. The temperature-sensitive material block 302 is located at the bottom of the electrode material 102. The cooling mechanism 300 is used to cool down and absorb heat from the heated electrode material 102.

[0050] As a preferred implementation in this embodiment, Figure 1 - Fig.11 As shown, the cooling mechanism 300 includes two semi-enclosed boxes 301, the two semi-enclosed boxes 301 are fixedly connected to the interior of the cooling bin 105, the interior of the powder tank 310 is fixedly connected to the temperature-sensitive material block 302, a spring 1 303 is fixedly connected to one side of the two temperature-sensitive material blocks 302 away from each other, and a push plate 304 is fixedly connected to one end of the spring 1 303 away from the temperature-sensitive material block 302.

[0051] In this embodiment, Figure 1 - Fig.11 As shown, a ball 305 is fixedly connected to the bottom end of the push plate 304, and a long box 306 is slidably connected to the outside of the ball 305. The long box 306 is located at the bottom end of the semi-enclosed box 301 and is fixedly connected to the cooling chamber 105. A spring 2 307 is fixedly connected to one side of the ball 305 away from the semi-enclosed box 301, and the end of the spring 2 307 away from the ball 305 is also fixedly connected to the long box 1 306.

[0052] In this embodiment, Figure 1 - Fig.11 As shown, the semi-enclosed box 301 and the long box 1 306 are symmetrically provided with the long box 2 308 on both sides, and the long box 2 308 is also fixedly connected to the cooling bin 105. The interior of the long box 2 308 is slidably connected with the powder groove 1 309, and the interior of the long box 2 308 is also slidably connected with the powder groove 2 310. The powder groove 1 309 and the powder groove 2 310 are alternately arranged, and the side of the powder groove 1 309 away from the powder groove 2 310 is rotatably connected with the lever 1 311, and the lever 1 311 passes through the long box 2 308 and the long box 1 306 and extends into the interior of the long box 1 306.

[0053] In this embodiment, Figure 1 - Fig.11 As shown, the side of the powder slot 2 310 away from the powder slot 1 309 is rotatably connected to the lever 2 312, and the lever 2 312 also passes through the long box 2 308 and the long box 1 306 and extends into the long box 1 306. The lever 1 311 and the lever 2 312 are both located on the side of the ball 305 away from the semi-enclosed box 301.

[0054] Compared with the existing technology, this device can cool down the motor materials that are charging and discharging and generating more heat, ensuring that the temperature will not be raised to prevent accelerated aging of the motor materials. At the same time, it can avoid lithium loss at the positive and negative electrodes, and avoid the battery's capacity reduction and shortened life due to increased temperature. It can also prevent the electrolyte from decomposing and producing gas at high temperatures, effectively reducing the risk of explosion, and finally prevent uncontrollable chain reactions such as thermal runaway in the internal materials, preventing the battery from burning.

[0055] The following is the specific working principle of the above embodiment:

[0056] During the charging and discharging process of the tab battery, the electrode material 102 inside it will expand to a certain extent due to the long-term exchange of electrons in and out, as well as the internal chemical reaction, and the volume of the electrode material 102 itself will expand to a certain extent, and the electrode material 102 is fixedly connected to the connecting frame 104 at the top and the positive and negative tabs 103. When the electrode material 102 becomes larger, it is bound to affect the connection stability with the positive and negative tabs 103 at the top, so the positive and negative tabs 103 need to be fixed in position. Since there are multiple layers of electrode material 102 in the shell 101, and the two adjacent layers of electrode material 102 are not completely fitted together, but leave a certain gap, a disc 1 201 is rotatably connected to the bottom end of the connecting frame 104, and the disc 1 201 is located The position is located in the middle of two adjacent layers of electrode material 102, which can make the object connected below the disc 201 also located in the middle of the two layers of electrode material 102. Two sets of connecting shafts 202 are rotatably connected to the bottom surface of the disc 201. The two sets of connecting shafts 202 are symmetrically distributed and have opposite movement postures. The end of the connecting shaft 202 away from the middle of the disc 201 is also rotatably connected to the support plate 203. The two support plates 203 are respectively close to the two sides of the shell 101, and the sum of their lengths is basically consistent with the width of the electrode material 102. The bottom surface of the disc 201 is also fixedly connected to the long tube 204. After a certain length of extension, the bottom end of the long tube 204 is directly located in the middle of the electrode material 102, and the bottom surface of the long tube 204 is also fixed. The second circular piece 205 is fixedly connected, which is consistent with the first circular piece 201 above. The second circular piece 205 is rotatably connected to two sets of symmetrical and oppositely moving shafts 206, and the other end of the second shaft 206 is rotatably connected to the support plate 207. Different from the second shaft 206, the second shaft 206 is in an inclined posture and the support plate 207 is in a horizontal posture when viewed from the bottom. The two support plates 207 are fixedly connected with a pressing plate 208 at one end away from the second shaft 206. The pressing plate 208 is in contact with the electrode material 102. When the electrode material 102 expands due to charging and discharging, the pressing plate 208 is squeezed to move to the side close to the long cylinder 204, and the two sets of shafts 206 are also affected by the support plate 207, and move toward each other under the second circular piece 205. The two groups of connecting shafts 202 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 202 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 202 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 202 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 202 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 202 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 203 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 203 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 203 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 203 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 203 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 1 203 are rotated to connect the support plates 1 203, and the two groups of connecting shafts 1 203 are rotated to connect the support plates 1 203.Provide more support to ensure the stability of the positive and negative tabs 103 and the connecting frame 104.

[0057] At the same time, on the top connecting frame 104, when the battery needs to be charged and discharged, the external power-on tool is clamped on the positive and negative ears 103 to perform the charging and discharging operations. The external clamp will also clamp the folding plate 209 next to the positive and negative ears 103. The folding plate 209 is located on the side where the two positive and negative ears 103 are away from each other. The middle part of the folding plate 209 is rotatably connected to the connecting frame 104. At the same time, the bottom end of the folding plate 209 is rotatably connected to the cross frame 210 in the hollow interior of the connecting frame 104. When the folding plate 209 is subjected to the external force of clamping the electrode material 102, the folding plate 209 will deflect, and its upper part The connecting frame 104 deflects toward the direction close to the positive and negative pole ears 103, and its lower half deflects toward the direction away from the positive and negative pole ears 103, so the horizontal frame 210 at the bottom will also move away from the positive and negative pole ears 103. After a short distance of movement, the connecting frame 104 contacts the other two sides of the inner wall of the shell 101, and these two sides are perpendicular to the two sides supported by the supporting plate 1 203. Through the contact support of the horizontal frame 210, the positive and negative pole ears 103 and the connecting frame 104 can be supported in more different directions during the charging and discharging process to ensure the positioning stability of the positive and negative pole ears 103. In this process, the positive and negative pole ears 103 are fixedly connected to the top of the connecting frame 104, and will not deflect themselves, and the position of the connecting frame 104 will not change during the charging and discharging process.

[0058] During the long-term charging and discharging process, the electrode material 102 will inevitably generate a large amount of heat. If this heat accumulates inside the shell 101, the charging and discharging process will inevitably be affected by the temperature increase. Therefore, it is necessary to absorb and dissipate heat for the electrode material 102 and the inside of the shell 101 when necessary. The cooling bin 105 is fixedly connected to the bottom end of the shell 101, and the interior of the cooling bin 105 is fixedly connected to the semi-enclosed box 301. There are two semi-enclosed boxes 301. The two semi-enclosed boxes 301 are symmetrical and half-open. The half-open surface is the side of the semi-enclosed box 301 that is away from each other. A temperature-sensitive material block 302 is fixedly connected inside the semi-enclosed box 301. The temperature-sensitive material block 302 is a block made of a material that can absorb heat and expand. The material is mainly thermoplastic foam. This material has good thermal conductivity. It will become soft when the external temperature rises, and it will actively absorb heat, and its own volume will increase accordingly. When the heat inside the shell 101 continues to increase and the temperature rises, the temperature sensing material block 302 continues to be heated and absorbs heat, and its own volume continues to increase. The side of the two temperature sensing material blocks 302 that are away from each other is fixedly connected to the spring 1 303. When the volume of the temperature sensing material block 302 increases, it is bound to push the connected spring 1 303 to move toward the outside of the semi-closed box 301, and the end of the spring 1 303 away from the temperature sensing material block 302 is fixedly connected to the push plate 304. The push plate 304 moves horizontally to the outside of the semi-closed box 301 along with the spring 1 303. The bottom end of the push plate 304 is fixedly connected to the ball 305, and the ball 305 is located inside the long box 1 306. When the push plate 304 is fixedly connected to the ball 305 and continues to slide inside the long box 1 306, the ball 305 will eventually collide with the lever 1 311 and the lever 2 312 extending into the long box 1 306.

[0059] Two extrusion plates 208 fixedly connected to the cooling bin 105 are also arranged on the left and right sides of the long box 1 306, and a powder slot 1 309 is slidably connected inside the long box 2 308. A small amount of salt powder is placed on the powder slot 1 309, and a powder slot 2 310 is slidably connected inside the long box 2 308. A small amount of salt powder, mainly calcium carbonate salt and metal oxide powder, is placed on the powder slot 2 310. After mixing, these two substances will absorb heat, and the small amount of powder on the powder slot 1 309 and the powder slot 2 310 can absorb heat after mixing. Under normal conditions, powder slot 1 309 and powder slot 2 310 are staggered, and their movements do not conflict with each other, and no direct collision occurs. When the ball 305 in the long box 1 306 touches the lever 1 311 and the lever 2 312, the powder slot 1 309 connected to the lever 1 311 and the powder slot 2 310 connected to the lever 2 312 will move staggered. The powder slot 1 309 and the powder slot 2 310, which were originally not misaligned, will move towards each other and misaligned after the friction and movement of the lever 1 311 and the lever 2 312. When the two are misaligned, the powders placed inside the two will mix together, and then the two solid powders will undergo certain chemical changes and absorb heat, so that the temperature of the outer shell 101 is maintained within a reasonable range.

[0060] For existing tab batteries, there is generally no built-in special cooling and heat absorption structure inside the battery. Generally, a heat sink or liquid cooling system is set on the outside of the battery. Moreover, these cooling structures will only run continuously from beginning to end and will continue to generate energy consumption, which will in turn consume additional electricity. Specially placing a cooling structure that can absorb heat inside the battery can flexibly determine whether to take cooling measures based on the temperature of the battery. If it is due to battery performance reasons, or the charging and discharging time is short, the heat generated is less, and the temperature is relatively reasonable, there is no need to take cooling measures. Take cooling measures, that is, when the temperature is reasonable, although the temperature-sensitive material block 302 also absorbs heat and becomes larger, it has not reached the level of pushing the ball 305 to contact the lever 1 311. The distance between the ball 305 being pushed but not contacting the lever 1 311 and the lever 2 312 is the reasonable range of battery heat accommodation. The built-in cooling structure does not have to cool down. Only when the temperature exceeds the limit range, it absorbs heat and cools down. This device can make up for the defect that the existing tab battery has no built-in heat absorption structure, and can also flexibly deal with the problem of whether heat absorption is needed when the temperature is different.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power battery structure with a tab charging and discharging positioning function, comprising a support mechanism (100), the support mechanism (100) comprising a shell (101), an electrode material (102) being fixedly connected to the inside of the shell (101), a connecting frame (104) being fixedly connected to the top of the electrode material (102), a positive and negative tabs (103) being fixedly connected to the top of the connecting frame (104), a cooling chamber (105) being fixedly connected to the shell (101) being provided at the bottom of the electrode material (102), characterized in that: A fixing mechanism (200) is provided at the bottom end of the connecting frame (104), and a cooling mechanism (300) is provided at the bottom end of the electrode material (102); The fixing mechanism (200) comprises a horizontal frame (210) for horizontally positioning the pole tab during charging and discharging, the horizontal frame (210) being arranged at the top of the housing (101), and the fixing mechanism (200) is used for positioning the pole tab of the power battery being charged and discharged; The cooling mechanism (300) comprises a temperature-sensitive material block (302) that changes its volume in response to changes in temperature and heat. The temperature-sensitive material block (302) is located at the bottom end of the electrode material (102). The cooling mechanism (300) is used to cool and absorb heat from the heated electrode material (102).

2. A power battery structural component with a tab charging and discharging positioning function according to claim 1, characterized in that: The length and width of the electrode material (102) are compatible with the outer shell (101); the connecting frame (104) is hollow and perpendicular to the electrode material (102); and two positive and negative electrode ears (103) are provided and symmetrically distributed at the left and right ends of the connecting frame (104).

3. A power battery structural component with a tab charging and discharging positioning function according to claim 1, characterized in that: The fixing mechanism (200) is provided with six groups and each group of the fixing mechanism (200) is located in the middle of the two electrode materials (102). The fixing mechanism (200) comprises a disc one (201), the disc one (201) is rotatably connected to the bottom end of the connecting frame (104), the lower surface of the disc one (201) is rotatably connected to two connecting shafts one (202), and the end of the connecting shaft one (202) away from the disc one (201) is rotatably connected to a support plate one (203), and the length of the two support plates one (203) is consistent with the width of the electrode material (102).

4. A power battery structural component with a tab charging and discharging positioning function according to claim 3, characterized in that: The center of the disc one (201) is fixedly connected to a long tube (204), the bottom end of the long tube (204) extends into the interior of the electrode material (102) and is fixedly connected to the disc two (205), the lower surface of the disc two (205) is rotatably connected to two connecting shafts (206), the end of the connecting shafts (206) away from the disc two (205) is rotatably connected to a support plate two (207), the end of the support plate two (207) away from the connecting shaft two (206) is fixedly connected to an extrusion plate (208), and the extrusion plate (208) and the electrode material (102) are in conflict.

5. The power battery structural component with tab charge and discharge positioning function according to claim 1, characterized in that: A folding plate (209) is also provided on the side away from each other of the two positive and negative electrode ears (103); the middle part of the folding plate (209) is rotatably connected to the connecting frame (104); the top end of the folding plate (209) extends out of the upper surface of the connecting frame (104); the bottom end of the folding plate (209) is located inside the connecting frame (104); and the two folding plates (209) are rotatably connected to the cross frame (210) on the side away from each other.

6. The power battery structure with tab charging and discharging positioning function according to claim 1, characterized in that: The cooling mechanism (300) comprises two semi-enclosed boxes (301), the two semi-enclosed boxes (301) are fixedly connected to the interior of the cooling chamber (105), the interior of the semi-enclosed boxes (301) is fixedly connected to the temperature-sensitive material block (302), a spring 1 (303) is fixedly connected to one side of the two temperature-sensitive material blocks (302) away from each other, and a push plate (304) is fixedly connected to one end of the spring 1 (303) away from the temperature-sensitive material block (302).

7. A power battery structural component with a tab charging and discharging positioning function according to claim 6, characterized in that: The bottom end of the push plate (304) is fixedly connected to a ball (305), and the outside of the ball (305) is slidably connected to a long box (306). The long box (306) is located at the bottom end of the semi-enclosed box (301) and is fixedly connected to the cooling bin (105). The side of the ball (305) away from the semi-enclosed box (301) is fixedly connected to a spring (307), and the end of the spring (307) away from the ball (305) is also fixedly connected to the long box (306).

8. The power battery structural component with tab charge and discharge positioning function according to claim 6, characterized in that: The semi-enclosed box (301) and the long box one (306) are symmetrically provided with the long box two (308) on both sides, and the long box two (308) is also fixedly connected to the cooling bin (105). The interior of the long box two (308) is slidably connected with the powder trough one (309), and the interior of the long box two (308) is also slidably connected with the powder trough two (310). The powder trough one (309) and the powder trough two (310) are alternately arranged, and the side of the powder trough one (309) away from the powder trough two (310) is rotatably connected with the lever one (311), and the lever one (311) passes through the long box two (308) and the long box one (306) and extends into the interior of the long box one (306).

9. A power battery structural component with a tab charging and discharging positioning function according to claim 8, characterized in that: The side of the powder trough 2 (310) away from the powder trough 1 (309) is rotatably connected to the lever 2 (312), and the lever 2 (312) also passes through the long box 2 (308) and the long box 1 (306) and extends into the interior of the long box 1 (306). The lever 1 (311) and the lever 2 (312) are both located on the side of the ball (305) away from the semi-enclosed box (301).

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