A battery charge-discharge thermal performance detection device based on a multi-channel isothermal micro calorimeter

Abstract

The utility model provides a kind of battery charge-discharge thermal performance detection device based on multichannel isothermal microcalorimeter, including first heat sink plug, the surface of first heat sink plug is fixed second heat sink plug by bolt, first support rod fixedly connected heat insulation plug and second heat sink plug;The inside of hollow first heat sink plug is slidably connected second support rod, the sidewall of second support rod is equipped with spring, and the both ends of spring respectively abut first heat sink plug and box cover;The box cover engages storage box, and the inside of box cover and storage box is installed battery;The surface of box cover is symmetrically installed plug, and the electrode sheet inside battery is engaged plug;The sidewall of first heat sink plug and heat insulation plug is equipped with through-hole, and heat insulation sleeve is arranged in the inside of through-hole.The utility model provides a kind of battery charge-discharge thermal performance detection device based on multichannel isothermal microcalorimeter has the advantages that it guarantees wire to be connected with battery all the time, increases the accuracy of detection effect.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery charging and discharging thermal performance testing device based on a multi-channel isothermal microcalorimeter. Background Technology

[0002] A multichannel isothermal microcalorimeter is a precision instrument for measuring the thermal changes of a substance at a constant temperature. In battery material development, multichannel isothermal microcalorimeters can quickly analyze the thermal stability of batteries obtained through different processes during charge and discharge. By comparing the thermal flow response data of each channel, better material combinations can be selected, reducing the risk of thermal runaway.

[0003] When a battery is placed inside a multi-channel isothermal calorimeter for testing, the battery electrodes need to be connected to wires for charging and discharging. During the testing process, the wires need to bear the weight of the battery, and the connection between the two is located inside the multi-channel isothermal calorimeter. Loose connections can easily lead to poor contact between the wires and the battery, affecting the testing results.

[0004] Therefore, it is necessary to provide a new battery charge-discharge thermal performance testing device based on a multi-channel isothermal microcalorimeter to solve the above problems. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a battery charge and discharge thermal performance testing device based on a multi-channel isothermal microcalorimeter that ensures the wire is always connected to the battery and increases the accuracy of the detection effect.

[0006] To solve the above-mentioned technical problems, the present invention provides a battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter, comprising: a first heat sink, a second heat sink fixed to the surface of the first heat sink by bolts, and a heat insulation plug and the second heat sink fixedly connected to both ends of a first support rod respectively; a second support rod slidably connected inside the hollow first heat sink, a spring fitted on the side wall of the second support rod, the two ends of the spring respectively abutting against the first heat sink and the cover; the cover engaging with a storage box, and a battery installed inside the cover and the storage box; plugs symmetrically installed on the surface of the cover, the plugs engaging with the electrode plates inside the battery; a metal rod welded to the surface of the plug, through holes provided on the side walls of the first heat sink and the heat insulation plug, the metal rod penetrating the through holes, and a heat insulation sleeve provided inside the through holes.

[0007] Preferably, the storage box has a first slot at its surface edge, and multiple magnetic pillars are installed inside the first slot; the surface of the box cover has symmetrically arranged protrusions, which engage with the first slot, and the magnetic pillars slide to connect with and attract the interior of the protrusions.

[0008] Preferably, the storage box has symmetrical second slots on its side wall, and the surface of the box cover is symmetrically fixedly connected to positioning posts. The positioning posts are slidably connected to the second slots, and the positioning posts abut against the edge of the battery.

[0009] Preferably, the heat insulation plug and the first heat sink plug are engaged inside the sample furnace, and the bottom surface of the storage box abuts against the inner bottom surface of the sample furnace.

[0010] Preferably, the heat insulation plug has symmetrically mounted joints on its surface, and the joints are welded to the metal rod.

[0011] Preferably, the elastic metal rod between the first heat sinker and the cover has an arc-shaped structure; inside the first heat sinker, the through hole and the heat insulation sleeve are inclined, and the inner diameter of the through hole gradually decreases from bottom to top.

[0012] Preferably, inside the heat insulation plug, the metal rod and the heat insulation sleeve are arranged vertically.

[0013] Compared with related technologies, the battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter provided by this utility model has the following beneficial effects: This invention provides a battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter. When testing the battery, it is placed inside the storage box, and the box cover is used to lock the storage box in place, securing the battery inside. The plug then enters the battery and presses against the elastic electrode plate, causing the metal rod to align with the battery. When placing the battery into the sample furnace for testing, during the placement of the storage box, the storage box first contacts the interior of the sample furnace, and the first heat sink and the heat insulation plug continue to enter the sample furnace. The first heat sink compresses the spring, and the second support rod enters the first heat sink. Inside the sample furnace, the spring, when compressed, presses downwards against the cover and the storage box, ensuring that the cover and the storage box are horizontally positioned inside the sample furnace. When the first heat sink and the heat insulation plug engage with the sample furnace, the spring is in a compressed state, pressing against the cover and the storage box to prevent displacement during battery testing and to ensure that the plug and the electrode plate remain in contact, avoiding poor contact. The metal rod between the first heat sink and the cover is compressed into an arc shape, pressing against the plug. During battery testing, the battery is charged and discharged through the external wires connected to the metal rod, facilitating battery testing inside the multi-channel isothermal calorimeter. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter provided by this utility model. Figure 2 for Figure 1 The diagram shows the internal structure of the first hot-sink plug; Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point A. Figure 4 for Figure 2 The diagram shows an enlarged view of the structure at point B. Figure 5 for Figure 1 The diagram shows the structure of the storage box. Figure 6 for Figure 1 The diagram shows the structure of the box lid.

[0015] The following are the labels in the diagram: 1. Heat insulation plug, 2. First support rod, 3. Second support rod, 4. Spring, 5. First heat sink, 51. Second heat sink, 52. Bolt, 53. Through hole, 6. Metal rod, 61. Connector, 62. Plug, 63. Heat insulation sleeve, 7. Box cover, 71. Protrusion, 72. Positioning post, 8. Storage box, 81. First slot, 82. Second slot, 9. Sample furnace, 10. Battery, 101. Electrode plate, 11. Magnetic column. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please see Figures 1 to 6 , Figure 1 A schematic diagram of a preferred embodiment of the battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter provided by this utility model. Figure 2 for Figure 1 The diagram shows the internal structure of the first hot-rolled plug. Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point A. Figure 4 for Figure 2 The diagram shows an enlarged view of the structure at point B. Figure 5 for Figure 1 The diagram shows the structure of the storage box. Figure 6 for Figure 1The diagram shows a schematic of the cover structure. A battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro-calorimeter includes a first heat sink 5, a second heat sink 51 fixed to the surface of the first heat sink 5 by bolts 52, and a heat insulation plug 1 and the second heat sink 51 fixedly connected to both ends of a first support rod 2, respectively. A second support rod 3 is slidably connected inside the hollow first heat sink 5, and a spring 4 is fitted onto the side wall of the second support rod 3. Both ends of the spring 4 abut against the first heat sink 5 and the cover 7, respectively. During the placement of the storage box 8, the storage box 8 first contacts the interior of the sample furnace 9, and the first heat sink 5 and the heat insulation plug 1 continue to... The first heat sink 5 enters the interior of the sample furnace 9; the first heat sink 5 presses against the spring 4, and the second support rod 3 enters the interior of the first heat sink 5. After being compressed, the spring 4 presses downward against the cover 7 and the storage box 8, so that the cover 7 and the storage box 8 are horizontally located inside the sample furnace 9. When the first heat sink 5 and the heat insulation plug 1 engage with the sample furnace 9, the spring 4 is in a compressed state, pressing against the cover 7 and the storage box 8, ensuring that the battery 10 does not shift during the testing process, and at the same time ensuring that the plug 62 and the electrode plate 101 remain in contact, avoiding poor contact.

[0018] The cover 7 engages with the storage box 8, and the battery 10 is installed inside the cover 7 and the storage box 8. Plugs 62 are symmetrically mounted on the surface of the cover 7, and the plugs 62 engage with the electrode plates 101 inside the battery 10. A first slot 81 is provided at the edge of the surface of the storage box 8, and multiple magnetic pillars 11 are installed inside the first slot 81. Protrusions 71 are symmetrically arranged on the surface of the cover 7, and the protrusions 71 engage with the first slot 81, with the magnetic pillars 11 slidably connected to and adsorbing the interior of the protrusions 71. A second slot 82 is symmetrically arranged on the side wall of the storage box 8, and positioning posts 72 are symmetrically fixedly connected to the surface of the cover 7, with the positioning posts 72 slidably connected to the second slot 82, and the positioning posts 72 abutting against the edge of the battery 10. When installing the battery 10, the battery 10 is placed inside the storage box 8, the storage box 8 is aligned with the cover 7, and the electrode plate 101 is aligned with the connector 62; the cover 7 is snapped into the storage box 8, the protrusion 71 enters the first slot 81, the magnetic post 11 enters the protrusion 71 and attracts the protrusion 71, the connector 62 snaps into and presses the electrode plate 101, and the cover 7 and the storage box 8 are spliced ​​together by magnetic attraction, which facilitates the placement of the battery 10; during the installation process, the positioning post 72 enters the second slot 82 to guide the docking process of the cover 7, and the positioning post 72 presses against the side wall edge of the battery 10 to limit the battery 10.

[0019] The surface of the plug 62 is welded with a metal rod 6, and the surface of the heat insulation plug 1 is symmetrically mounted with a connector 61. The connector 61 is welded to the metal rod 6. In order to facilitate the connection of external wires to the connector 61, the motor 10 is connected to the wires through the plug 62, the metal rod 6 and the connector 61.

[0020] The sidewalls of the first heat sinker 5 and the heat insulation plug 1 are provided with through holes 53, the metal rod 6 passes through the through holes 53, and a heat insulation sleeve 63 is provided inside the through holes 53. The elastic metal rod 6 between the first heat sinker 5 and the cover 7 has an arc-shaped structure. To facilitate the bending and deformation of the lower plate portion of the metal rod 6 between the first heat sinker 5 and the cover 7, the spring 4 presses against the cover 8. Inside the first heat sinker 5, the through hole 53 and the heat insulation sleeve 63 are inclined. To change the angle of the metal rod 6 after it passes through the first heat sinker 5, increasing the resistance of the metal rod 6 moving upward at the bottom of the first heat sinker 5, and to gradually reduce the inner diameter of the through hole 53 from bottom to top, the squeezing force of the heat insulation sleeve 63 on the metal rod 6 inside the through hole 53 gradually increases from bottom to top, preventing the metal rod 6 from sliding inside the first heat sinker 5, facilitating the deformation of the lower half of the metal rod 6 between the first heat sinker 5 and the cover 7, and ensuring a stable connection between the metal rod 6 and the plug 62.

[0021] Inside the heat insulation plug 1, the metal rod 6 and the heat insulation sleeve 63 are vertically arranged to facilitate fixing the upper part of the metal rod 6 between the heat insulation plug 1 and the first heat sink 5, and to prevent the upper part of the metal rod 6 from deforming.

[0022] The heat insulation plug 1 and the first heat sink plug 5 engage with the interior of the sample furnace 9, and the bottom surface of the storage box 8 abuts against the interior bottom surface of the sample furnace 9. This is to facilitate the heat insulation plug 1 and the first heat sink plug 5 sealing the interior of the sample furnace 9 and to prevent heat leakage during the testing of the battery 10.

[0023] The working principle of this utility model is as follows: When installing the battery 10, the battery 10 is placed inside the storage box 8, the storage box 8 is aligned with the cover 7, and the electrode plate 101 is aligned with the connector 62; the cover 7 is snapped into the storage box 8, the protrusion 71 enters the first slot 81, the magnetic post 11 enters the protrusion 71 and attracts the protrusion 71, the connector 62 snaps into and presses the electrode plate 101, and the cover 7 and the storage box 8 are spliced ​​together by magnetic attraction, which facilitates the placement of the battery 10; during the installation process, the positioning post 72 enters the second slot 82 to guide the docking process of the cover 7, and the positioning post 72 presses against the side wall edge of the battery 10 to limit the battery 10. The device is placed inside a multi-channel isothermal calorimeter. The storage box 8 enters the sample furnace 9, with its bottom surface initially contacting the interior of the sample furnace 9. The first heat sink 5 and the heat insulation plug 1 continue to enter the sample furnace 9, and the lower half of the metal rod 6 gradually bends. The first heat sink 5 presses against the spring 4, and the second support rod 3 enters the interior of the first heat sink 5. After being compressed, the spring 4 presses downward against the cover 7 and the storage box 8, so that the cover 7 and the storage box 8 are horizontally positioned inside the sample furnace 9. When the first heat sink 5 and the heat insulation plug 1 engage with the sample furnace 9, the spring 4 is in a compressed state, pressing against the cover 7 and the storage box 8, ensuring that the battery 10 does not shift during the detection process, while ensuring that the plug 62 remains in contact with the electrode plate 101 to avoid poor contact.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter, characterized in that, include: A first heat sinker (5) is fixed to the surface of the first heat sinker (5) by a bolt (52) and a second heat sinker (51) is fixed to the two ends of the first support rod (2). The heat insulation plug (1) and the second heat sinker (51) are fixedly connected to the two ends of the first support rod (2). The hollow first heat sinker (5) is slidably connected to the second support rod (3). A spring (4) is fitted on the side wall of the second support rod (3). The two ends of the spring (4) abut against the first heat sinker (5) and the box cover (7) respectively. The cover (7) engages with the storage box (8), and the battery (10) is installed inside the cover (7) and the storage box (8); the plug (62) is symmetrically installed on the surface of the cover (7), and the plug (62) engages with the electrode plate (101) inside the battery (10); the metal rod (6) is welded to the surface of the plug (62), and the sidewalls of the first heat sink (5) and the heat insulation plug (1) are provided with through holes (53), the metal rod (6) passes through the through holes (53), and the heat insulation sleeve (63) is provided inside the through holes (53).

2. The battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter according to claim 1, characterized in that, The storage box (8) has a first slot (81) at the edge of its surface, and multiple magnetic pillars (11) are installed inside the first slot (81); the box cover (7) has symmetrically arranged protrusions (71) on its surface, the protrusions (71) engage with the first slot (81), and the magnetic pillars (11) slide to connect with and attract the interior of the protrusions (71).

3. The battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter according to claim 2, characterized in that, The storage box (8) has a second slot (82) symmetrically provided on its side wall. The cover (7) is symmetrically fixedly connected to a positioning post (72). The positioning post (72) is slidably connected to the second slot (82), and the positioning post (72) abuts against the edge of the battery (10).

4. The battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter according to claim 1, characterized in that, The heat insulation plug (1) and the first heat sink plug (5) engage with the interior of the sample furnace (9), and the bottom surface of the storage box (8) abuts against the interior bottom surface of the sample furnace (9).

5. The battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter according to claim 4, characterized in that, The heat insulation plug (1) has a symmetrically mounted connector (61) on its surface, and the connector (61) is welded to the metal rod (6).

6. The battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter according to claim 5, characterized in that, The elastic metal rod (6) between the first heat sinker (5) and the cover (7) has an arc-shaped structure; inside the first heat sinker (5), the through hole (53) and the heat insulation sleeve (63) are inclined, and the inner diameter of the through hole (53) gradually decreases from bottom to top.

7. The battery charge-discharge thermal performance testing device based on a multi-channel isothermal micro calorimeter according to claim 5, characterized in that, Inside the heat insulation plug (1), the metal rod (6) and the heat insulation sleeve (63) are vertically arranged.

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