A battery charging and discharging aging test equipment

Abstract

The present invention discloses a battery charge and discharge aging test device, which relates to the field of battery testing technology. The present invention significantly improves the safety and efficiency of battery charge and discharge testing. The combination of the support base plate and the conductive slide rod support plate ensures that the battery is firmly positioned during the test. The thermistor monitors the battery temperature in real time. When the temperature reaches an unqualified level, it triggers the electromagnet to work, automatically starts the unloading system, and ejects the battery into a water reservoir for cooling, thereby preventing the risk of spontaneous combustion and fire. The automated unloading system reduces manual intervention and improves the speed and efficiency of emergency processing. The extrusion spring ensures that good contact pressure is always maintained between the battery electrodes and the contacts, thereby improving the accuracy of the test. Compared with existing equipment, this equipment solves the problems of unstable battery fixation, delayed temperature monitoring, the need for manual intervention, and a low degree of automation, and provides a stable, safe, and efficient battery charge and discharge test solution.

Description

Technical Field

[0001] The invention relates to the technical field of battery testing, in particular to a battery charging and discharging aging testing device. Background Art

[0002] Existing battery charge and discharge aging test equipment mostly adopts manual operation or semi-automatic design, which has many shortcomings. First, the fixation of the battery during the test is not stable enough, which can easily lead to poor contact of the battery electrode contacts, affecting the accuracy of the test results. Secondly, the temperature monitoring and control are not timely enough, and it is easy for the battery to overheat and fail to deal with it in time, which poses certain safety hazards. In addition, the existing equipment often requires manual intervention when an abnormality is detected, and the reaction speed is slow, which can easily delay the best processing time, increasing the workload and risk of the operator. Therefore, there is an urgent need for a stable and safe battery charge and discharge aging test equipment to solve these problems. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a battery charging and discharging aging test equipment, including an installation side plate, on which a support beam frame, a discharge drive rod support plate and a top support beam are fixed, wherein a conductive sliding rod support plate and a bottom sliding guide rod are fixed on the support beam frame; two conductive sliding rods electrically connected to the electrodes of the battery to be tested are slidably arranged on the conductive sliding rod support plate by means of splines; it also includes a support bottom plate for supporting the battery, and a sliding through hole is provided on the support bottom plate to slide with the bottom sliding guide rod; two parallel and symmetrically arranged top sliding guide rods are also fixedly installed on the installation side plate, a discharge push frame is slidably arranged on the top sliding guide rod, a reinforced sliding block slidingly matched with the lower surface of the top support beam is fixedly installed on the discharge push frame, and the discharge push frame is insulated and in contact with the pressure relief valve of the battery.

[0004] Preferably, a contact is provided at one end of the conductive sliding rod that contacts the battery electrode, and the contact is in conductive contact with the battery electrode. A compression spring is arranged around each conductive sliding rod, and both ends of the compression spring are fixedly matched with the conductive sliding rod support plate and the contact to provide contact pressure between the contact and the battery electrode, and to limit the range of movement of the conductive sliding rod.

[0005] Preferably, each top sliding guide rod is surrounded by a unloading force storage spring, and both ends of the unloading force storage spring are fixedly matched with the unloading push frame and the mounting side plate. The lower surface of the unloading push frame is provided with a groove that can be engaged with the one-way locking pin.

[0006] Preferably, two parallel unloading drive rods are vertically slidably installed on the unloading drive rod support plate, wherein a one-way locking pin is fixed to the top end of the two unloading drive rods, and a unloading drive plate is fixed to the bottom end of the unloading drive rod, and a unloading return spring is arranged around each unloading drive rod, and both ends of the unloading return spring are fixedly matched with the one-way locking pin and the unloading drive rod support plate.

[0007] Preferably, a vertical guide rod bracket is fixedly installed on the support beam, an electromagnet is fixed overhead on the vertical guide rod bracket, a locking ring bracket is fixed on both sides of the support beam at the position of the vertical guide rod bracket, a locking ring is rotatably arranged in the locking ring bracket, a sliding groove is opened on the locking ring bracket along the radial direction of the locking ring, and a locking block that is engaged with the circumferential surface of the locking ring is slidably installed in the sliding groove.

[0008] Preferably, the stop block is fixed on the vertical guide rod, and the vertical guide rod is slidably installed on the vertical guide rod bracket. A vertical stop spring is arranged around each vertical guide rod, and both ends of the vertical stop spring are fixedly matched with the stop block and the vertical guide rod bracket. A lifting block is fixed on the top of each vertical guide rod.

[0009] Preferably, the lower surface of the supporting base plate is provided with a tooth shape capable of meshing with a gear, and the gear is rotatably mounted on the locking collar bracket.

[0010] Preferably, a ratchet assembly is provided on the inner side of the locking ring, the center of the ratchet assembly is fixedly matched with the gear through a rotating shaft, the outer ring of the ratchet assembly is fixedly matched with the locking ring, and a dust cover is also provided on the outer end face of the ratchet assembly, and the dust cover is fixed on the locking ring bracket.

[0011] Preferably, a water reservoir is provided below the direction of the elastic force of the unloading force storage spring.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The battery electrode of the present invention ensures contact pressure by squeezing the contact point, and is maintained by the compression of the squeezing spring. This design ensures that during the charging and discharging process, the battery electrode and the contact point always maintain good contact pressure, avoids test errors caused by poor contact, and improves the accuracy and reliability of the test; (2) The present invention can monitor the temperature change of the battery during the charging and discharging process in real time by placing a thermistor on the surface of the battery. When the temperature reaches an unqualified level, the system will automatically trigger the electromagnet for emergency treatment. This design effectively prevents the potential safety hazards caused by battery overheating and ensures the safety of the battery testing process; (3) The present invention designs a cooling mechanism that throws the battery into the water tank through the unloading push rack when the battery temperature rises abnormally, avoiding the risk of fire caused by possible spontaneous combustion of the battery. This preventive measure fully considers the danger of batteries at high temperatures, provides an effective safety solution, and protects the safety of equipment and operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a structural schematic diagram of the unloading force storage spring of the present invention.

[0015] Figure 3 It is a structural schematic diagram of the unloading push frame of the present invention.

[0016] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0017] Figure 5 It is a schematic diagram of the gear structure of the present invention.

[0018] Figure 6 This is the working control diagram of the electromagnet of the present invention.

[0019] In the figure: 101-conductive sliding rod support plate; 102-conductive sliding rod; 103-contact point; 104-extrusion spring; 105-support bottom plate; 106-sliding through hole; 107-bottom sliding guide rod; 108-support beam frame; 109-gear; 110-ratchet assembly; 111-locking collar; 112-locking collar bracket; 113-locking block; 114-vertical guide rod; 115-vertical locking spring; 116 -Dust cover; 117-lifting block; 118-vertical guide rod bracket; 119-electromagnet; 120-unloading drive plate; 121-unloading drive rod; 122-one-way locking pin; 123-unloading return spring; 124-unloading drive rod support plate; 125-unloading push frame; 126-reinforced sliding block; 127-top sliding guide rod; 128-unloading storage spring; 129-top support beam; 130-install side panel. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-Figure 6 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0021] The present invention provides a battery charge and discharge aging test device, comprising an installation side plate 130, on which a support beam frame 108, a discharge drive rod support plate 124 and a top support beam 129 are fixed, wherein a conductive sliding rod support plate 101 and a bottom sliding guide rod 107 are fixed on the support beam frame 108; two conductive sliding rods 102 electrically connected to the electrodes of the battery to be tested are slidably arranged on the conductive sliding rod support plate 101 in a spline manner; further comprising a support bottom plate 105 for supporting the battery, on which a sliding through hole 106 slidably matched with the bottom sliding guide rod 107 is opened; two parallel and symmetrically arranged top sliding guide rods 127 are also fixedly installed on the installation side plate 130, on which a discharge push frame 125 is slidably arranged, on which a reinforced sliding block 126 slidably matched with the lower surface of the top support beam 129 is fixedly installed, and the discharge push frame 125 is insulated and contacted with the pressure relief valve of the battery. The end of the conductive slide bar 102 that contacts the battery electrode is provided with a contact 103, and the contact 103 is in conductive contact with the battery electrode. Each conductive slide bar 102 is surrounded by a compression spring 104, and the two ends of the compression spring 104 are fixedly matched with the conductive slide bar support plate 101 and the contact 103, providing contact pressure between the contact 103 and the battery electrode, and limiting the range of motion of the conductive slide bar 102. Each top sliding guide rod 127 is surrounded by a discharge storage spring 128, and the two ends of the discharge storage spring 128 are fixedly matched with the discharge push frame 125 and the mounting side plate 130. The lower surface of the discharge push frame 125 is provided with a groove that can be engaged with the one-way stop pin 122. Two parallel unloading drive rods 121 are vertically slidably installed on the unloading drive rod support plate 124, wherein a one-way stop pin 122 is fixed on the top end of the two unloading drive rods 121, and a unloading drive plate 120 is fixed to the bottom end of the unloading drive rod 121. A unloading return spring 123 is arranged around each unloading drive rod 121, and both ends of the unloading return spring 123 are fixedly matched with the one-way stop pin 122 and the unloading drive rod support plate 124. A vertical guide rod bracket 118 is fixedly mounted on the support beam 108, and an electromagnet 119 is overhead fixed on the vertical guide rod bracket 118. A locking ring bracket 112 is fixed on both sides of the support beam 108 at the position of the vertical guide rod bracket 118. A locking ring 111 is rotatably arranged in the locking ring bracket 112. A sliding groove is provided on the locking ring bracket 112 along the radial direction of the locking ring 111, and a locking block 113 is slidably mounted in the sliding groove to engage with the circumferential surface of the locking ring 111. The locking block 113 is fixed on the vertical guide rod 114, and the vertical guide rod 114 is slidably mounted on the vertical guide rod bracket 118. A vertical locking spring 115 is arranged around each vertical guide rod 114, and the two ends of the vertical locking spring 115 are fixedly matched with the locking block 113 and the vertical guide rod bracket 118, and a lifting block 117 is fixed on the top of each vertical guide rod 114.The lower surface of the support base plate 105 is provided with a tooth shape that can mesh with the gear 109, and the gear 109 is rotatably mounted on the retaining collar bracket 112. The inner side of the retaining collar 111 is provided with a ratchet assembly 110, the center of the ratchet assembly 110 is fixedly matched with the gear 109 through a rotating shaft, the outer ring of the ratchet assembly 110 is fixedly matched with the retaining collar 111, and the outer end surface of the ratchet assembly 110 is also provided with a dust cover 116, which is fixed on the retaining collar bracket 112. A water reservoir is provided below the elastic force direction of the discharge storage spring 128.

[0022] The working principle of a battery charge and discharge aging test device disclosed in the present invention is as follows: a battery is placed on a supporting base plate 105, and a protrusion is provided at one end of the supporting base plate 105 for supporting a side of the supporting base plate 105 away from the pressure relief valve. The support base plate 105 is pushed to move toward the conductive slide bar support plate 101. At this time, the battery electrode will squeeze the contact 103, and the squeezing spring 104 is compressed to ensure the contact pressure between the contact 103 and the battery electrode. The support base plate 105 moves and drives the gear 109 to rotate. The rotation of the gear 109 drives the inner ring of the ratchet assembly 110 to rotate, and the outer ring of the ratchet assembly 110 is restricted by the locking ring 111 and cannot rotate. The locking ring 111 is restricted by the locking block 113 and cannot rotate. Due to the reaction force of the squeezing spring 104, the battery and the support base plate 105 are pushed to move in the opposite direction. Since the inner ring of the ratchet assembly 110 can only rotate in one direction, the gear 109 can only rotate in one direction, which will cause the support base plate 105 to be unable to move in the opposite direction. Therefore, the battery will be stuck between the raised part of the support base plate 105 and the conductive slide bar support plate 101, ensuring the stability of the battery during charging and discharging. Then, a thermally conductive silicon pad is used to place the thermistor on the battery surface (simply fixed with tape or other methods, the thermistor is fixed on the battery surface with low viscosity, and the thermistor will easily detach from the battery surface) to monitor the temperature change of the battery during the charging and discharging process. The conductive sliding rod 102 is electrically connected to the two poles of the charging and discharging module.

[0023] When the battery charge and discharge test is completed, the lifting block 117 is manually lifted, and the lifting block 117 drives the vertical guide rod 114 to move, and the vertical guide rod 114 drives the locking block 113 to move. At the same time, the vertical locking spring 115 is compressed, and the locking block 113 is away from the locking ring 111, so that the locking ring 111 can rotate in the locking ring bracket 112, so that the ratchet assembly 110 is not restricted, and the supporting base plate 105 can move in the reverse direction at this time to remove the battery.

[0024] During the battery charge and discharge aging test, the battery temperature reaches the set value, which is the unqualified temperature. The resistance of the thermistor attached to the battery surface will decrease, and the voltage across the fixed resistor R will increase, which will increase the potential difference between the base and emitter of the transistor. At this time, the collector and emitter of the transistor are connected, so the electromagnet 119 starts to work (the thermistor and the fixed resistor R are connected in series at both ends of a DC power supply, and the thermistor is close to the positive end of the DC power supply, the collector and emitter of the transistor and the electromagnet 119 are connected in series at both ends of another DC power supply, and the collector of the transistor is connected to the positive pole of the DC power supply, and the base and emitter of the transistor are connected to the positive and negative ends of the fixed resistor R). The electromagnet 119 generates magnetic force when it works, and after generating magnetic force, it will attract the unloading drive plate 120 and the lifting block 117 (where the unloading drive plate 120 and the lifting block 117 are ferromagnetic materials), so that the lifting block 117 moves upward and the unloading drive plate 120 moves downward. The downward movement of the unloading drive plate 120 will drive the unloading drive rod 121 to move downward, and the unloading drive rod 121 will pull the one-way locking pin 122 to separate from the groove on the unloading push frame 125. At this time, the unloading push frame 125 will not be restricted in any way, and will quickly slide on the top sliding guide rod 127 under the elastic force of the unloading storage spring 128. At this time, the unloading push frame 125 will push the battery to move quickly (since the temperature decay takes some time, the electromagnet 119 will maintain the magnetic force for a period of time). Driven by the unloading push frame 125, the battery and the supporting bottom plate 105 will be ejected, making a horizontal throwing motion, and throwing the battery into the water tank for cooling to prevent the battery from spontaneously igniting and causing a fire.

Claims

1. A battery charge and discharge aging test device, characterized in that: It comprises a mounting side plate (130), on which a support beam frame (108), a discharge drive rod support plate (124) and a top support beam (129) are fixed, wherein a conductive sliding rod support plate (101) and a bottom sliding guide rod (107) are fixed on the support beam frame (108); Two conductive sliding rods (102) electrically connected to the electrodes of the battery to be detected are slidably arranged on the conductive sliding rod support plate (101) in a spline manner; It also includes a supporting bottom plate (105) for supporting the battery, and a sliding through hole (106) is provided on the supporting bottom plate (105) for slidingly cooperating with a bottom sliding guide rod (107); Two parallel and symmetrically arranged top sliding guide rods (127) are also fixedly installed on the mounting side plate (130), a discharging push frame (125) is slidably arranged on the top sliding guide rod (127), a reinforcing sliding block (126) that is slidably matched with the lower surface of the top support beam (129) is fixedly installed on the discharging push frame (125), and the discharging push frame (125) is insulated and in contact with the pressure relief valve of the battery; each top sliding guide rod (127) is surrounded by a discharging force storage spring (128), and the discharging force storage spring (128) is The two ends are fixedly matched with the unloading push frame (125) and the mounting side plate (130); the lower surface of the unloading push frame (125) is provided with a groove capable of being engaged with the one-way locking pin (122); two unloading drive rods (121) arranged in parallel are vertically slidably mounted on the unloading drive rod support plate (124); the one-way locking pin (122) is fixed to the top of the two unloading drive rods (121); the two unloading drive rods (121) are driven to move by the control component to separate the unloading push frame (125) from the locking pin (122); A contact point (103) is arranged at one end of the conductive slide bar (102) that contacts the battery electrode. The contact point (103) is in conductive contact with the battery electrode. A compression spring (104) is arranged around each conductive slide bar (102). Both ends of the compression spring (104) are fixedly matched with the conductive slide bar support plate (101) and the contact point (103) to provide contact pressure between the contact point (103) and the battery electrode, and to limit the range of motion of the conductive slide bar (102). A discharge drive plate (120) is fixed at the bottom end of the discharge drive bar (121). A discharge reset spring (123) is arranged around each discharge drive bar (121). Both ends of the discharge reset spring (123) are fixedly matched with the one-way stop pin (122) and the discharge drive bar support plate (124). The control component includes a thermistor mounted on the surface of the battery by bonding, the thermistor and a fixed resistor R are connected in series at both ends of a DC power supply, and the thermistor is close to the positive terminal of the DC power supply, the collector and emitter of the transistor and the electromagnet (119) are connected in series at both ends of another DC power supply, and the collector of the transistor is connected to the positive electrode of the DC power supply, and the base and emitter of the transistor are connected to the positive terminal and negative terminal of the fixed resistor R.

2. A battery charge and discharge aging test device according to claim 1, characterized in that: A vertical guide rod bracket (118) is fixedly mounted on the support beam (108), an electromagnet (119) is overhead-fixed on the vertical guide rod bracket (118), a locking ring bracket (112) is fixed at the positions of the vertical guide rod bracket (118) on both sides of the support beam (108), a locking ring (111) is rotatably arranged in the locking ring bracket (112), a sliding groove is provided on the locking ring bracket (112) along the radial direction of the locking ring (111), a locking block (113) that is engaged with the circumferential surface of the locking ring (111) is slidably mounted in the sliding groove, and teeth that can be engaged with each other are provided between the contact surfaces of the locking ring (111) and the locking block (113).

3. A battery charge and discharge aging test equipment according to claim 2, characterized in that: The stop block (113) is fixed on the vertical guide rod (114), and the vertical guide rod (114) is slidably mounted on the vertical guide rod bracket (118). A vertical stop spring (115) is arranged around each vertical guide rod (114), and both ends of the vertical stop spring (115) are fixedly matched with the stop block (113) and the vertical guide rod bracket (118). A lifting block (117) is fixed to the top of each vertical guide rod (114).

4. A battery charge and discharge aging test equipment according to claim 3, characterized in that: The lower surface of the supporting bottom plate (105) is provided with a tooth shape capable of meshing with a gear (109), and the gear (109) is rotatably mounted on a locking collar bracket (112).

5. A battery charge and discharge aging test device according to claim 4, characterized in that: A ratchet assembly (110) is disposed on the inner side of the locking collar (111); the center of the ratchet assembly (110) is fixedly matched with the gear (109) via a rotating shaft; the outer ring of the ratchet assembly (110) is fixedly matched with the locking collar (111); a dust cover (116) is also disposed on the outer end surface of the ratchet assembly (110); and the dust cover (116) is fixed on the locking collar bracket (112).

6. A battery charge and discharge aging test device according to claim 5, characterized in that: A water storage tank is provided below the direction of the elastic force of the unloading force storage spring (128); wherein the unloading drive plate (120) and the lifting block (117) are made of ferromagnetic materials.

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