- \n
- Lithium Battery Safety Topics<\/li>\n
- Strong partial discharge (P.D.) \/ electrical flashover detection and measurement function<\/li>\n
- +Instantaneous High Voltage Test (+Flash Test) Function<\/li>\n
- Daily inspection of PD functions<\/li>\n<\/ul>\n
<\/p>\n
<\/p>\n<\/div>\n
\n\n\n\u00a0Lithium Battery Safety Topics<\/strong><\/h3>\n<\/div>\n
\n \n\n\n\nThere are many different scenarios of short circuits within lithium batteries, one of the most serious being a short circuit from the aluminum metal of the positive electrode to the coated material of the negative electrode. When such a short circuit occurs, a large amount of heat is generated in a very small localized space, leading to a fire or explosion! Battery fires and explosions like this are the main cause of several automobile combustion incidents in the past decade. [Figure 1]<\/p>\n<\/div>\n<\/div>\n
\n![\"Chroma_Page_11210_1\"](\"https:\/\/szwanbo.oss-cn-shenzhen.aliyuncs.com\/wp-content\/uploads\/2025\/02\/Chroma_Page_11210_1.png\" "\\"Chroma_Page_11210_1\\"")
\n\u25b2 [Fig. 1] Car burning due to battery fire and explosion<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\nLithium battery (LIB) fire or explosion caused by the disaster has been in recent years for the users of serious concerns about the issue, with the continuous evolution of technology, lithium battery energy density has also continued to improve the safety of lithium batteries further evolved into a potential crisis in the lives of users! In order to completely eliminate such a potential crisis, the root cause of lithium battery fire and explosion must be found, and products with potential crisis must be screened out before leaving the factory; research reports show that the short circuit between the aluminum metal of the positive electrode (AL) and the negative electrode's coating material (Anode) is the root cause of the fire and explosion [Fig. 2], and the burrs on the aluminum metal of the positive electrode or the impurity particles in the insulating layer is the main cause of this internal short circuit [Fig. 3], which is the main cause of the internal short circuit [Fig. 5]. [Figure 3].<\/p>\n
\n \n\n\n![\"Chroma_Page_11210_2\"](\"https:\/\/szwanbo.oss-cn-shenzhen.aliyuncs.com\/wp-content\/uploads\/2025\/02\/Chroma_Page_11210_2.png\" "\\"Chroma_Page_11210_2\\"")
\n\u25b2 [Fig. 2] Temperature climb curves caused by internal short-circuiting of four different Li-ion batteries<\/div>\n<\/div>\n\n![\"Chroma_Page_11210_3\"](\"https:\/\/szwanbo.oss-cn-shenzhen.aliyuncs.com\/wp-content\/uploads\/2025\/02\/Chroma_Page_11210_3.png\" "\\"Chroma_Page_11210_3\\"")
\n\u25b2 [Fig. 3] A burr protruding from the aluminum metal of the positive electrode in a lithium battery may touch the material coated on the negative electrode and cause a fire or explosion.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\nResearch reports show that the negative electrode coated material (usually graphite) will expand slightly during each charging process, and after multiple charging, the expansion leads to an increase in thickness of up to 24% resulting in a shortening of the distance between the positive and negative electrodes [Figure 4], resulting in the original electrodes due to electrode burrs or metal foreign matter mixing in the electrodes to make the effective distance is shorter than it should be designed, which can easily evolve into an internal short-circuit. Usually, Li-ion batteries undergo several charge\/discharge cycles in the production line. For example, if there are two defective batteries, each with a burr of different lengths on its aluminum electrode plate [case 1 & case 2 in Fig. 5], case 1 is very likely to have an internal short-circuit problem during the second charging cycle on the production line, while case 2 will unfortunately happen to the consumer.<\/p>\n
\n \n\n\n![\"Chroma_Page_11210_4\"](\"https:\/\/szwanbo.oss-cn-shenzhen.aliyuncs.com\/wp-content\/uploads\/2025\/02\/Chroma_Page_11210_4.png\" "\\"Chroma_Page_11210_4\\"")
\n\u25b2 [Fig. 4] In the actual test, it was found that even after only 10 charge\/discharge cycles, the graphite material in the negative electrode may expand more than 24%.<\/div>\n<\/div>\n\n![\"Chroma_Page_11210_5\"](\"https:\/\/szwanbo.oss-cn-shenzhen.aliyuncs.com\/wp-content\/uploads\/2025\/02\/Chroma_Page_11210_5.png\" "\\"Chroma_Page_11210_5\\"")
\n\u25b2 [Fig. 5] Two defective batteries, each with a burr of different lengths on their aluminum electrode plates, will generally erupt with internal short circuits at different points in time<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"Product Features<\/div>\n- \n
- Test voltage: up to 1KV (dc)<\/li>\n
- Charging current: 50mA max<\/li>\n
- Wide range of leakage current measurement (1pA ~ 20mA)<\/li>\n
- Performs Partial Discharge\/Flashover detection (Option A112100) for potential internal short-circuit problems in lithium batteries:\n
- \n
- Detecting and displaying the intensity and number of localized discharges<\/li>\n
- Monitoring of partial discharges on voltage\/current waveforms.<\/li>\n
- The intensity of partial discharge can be set as a condition for passing the test.<\/li>\n
- Real-time display and storage of voltage\/current waveforms when partial discharges occur (Option A112101)<\/li>\n<\/ul>\n<\/li>\n
- Built-in +Flash Test function<\/li>\n
- Built-in quick contact check<\/li>\n
- Automatic execution of the test program in sequence: charging\u2192holding\u2192measuring\u2192discharging<\/li>\n
- Fast measurement (20ms)<\/li>\n
- Touch screen with full color display<\/li>\n
- Standard Handler interface and USB, RS-232, Ethernet communication interfaces.<\/li>\n<\/ul>","protected":false},"featured_media":10846,"comment_status":"open","ping_status":"closed","template":"","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false},"product_brand":[3527],"product_cat":[15],"product_tag":[2889],"class_list":{"0":"post-9649","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-chroma","7":"product_cat-uncategorized","8":"product_tag-2889","10":"first","11":"outofstock","12":"shipping-taxable","13":"product-type-variable"},"_links":{"self":[{"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/product\/9649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/comments?post=9649"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/media\/10846"}],"wp:attachment":[{"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/media?parent=9649"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/product_brand?post=9649"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/product_cat?post=9649"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/ad.wbyq.cn\/en\/wp-json\/wp\/v2\/product_tag?post=9649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}