Tech-dat/tech-dat.md
... ...
@@ -329,4 +329,4 @@ Any interetest demo please contact me to enquiry.
329 329
330 330
- https://github.com/Edragon/DOCS
331 331
332
-- [[m]]
... ...
\ No newline at end of file
0
+- [[m]] - [[2]]
... ...
\ No newline at end of file
app-dat/electric-scooter-dat/electric-scooter-dat.md
... ...
@@ -1,33 +1,34 @@
1
-
2
-# electric-scooter-dat
3
-
4
-- [[electric-scooter-dat]] - [[roller-dat]]
5
-
6
-
7
-- [[motor-BLDC-driver-dat]] - [[motor-brushless-dat]] - [[motor-driver-dat]] - [[motor-dat]]
8
-
9
-## Electric Scooter RPM at 20 km/h
10
-
11
-For a standard electric scooter or bike (with 14–16 inch outer tire diameter), the motor speed at **20 km/h** is typically between **250 and 300 RPM**.
12
-
13
-#### Core Calculation Formula:
14
-$$RPM = \frac{Speed (km/h) \times 16.67}{Tire Circumference (meters)}$$
15
-
16
-#### Common Tire Size Reference:
17
-| Tire Outer Diameter | Circumference | RPM at 20 km/h | Typical Vehicle |
18
-| :--- | :--- | :--- | :--- |
19
-| **14 inch** | ~1.12 m | **~298 RPM** | Compact E-bikes |
20
-| **16 inch** | ~1.28 m | **~260 RPM** | Standard Scooters |
21
-
22
-
23
-
24
-## tech
25
-
26
-- [[motor-brushless-dat]] - [[motor-dat]]
27
-
28
-
29
-
30
-
31
-## ref
32
-
33
-
1
+
2
+# electric-scooter-dat
3
+
4
+- [[electric-scooter-dat]] - [[roller-dat]]
5
+
6
+
7
+- [[motor-BLDC-driver-dat]] - [[motor-brushless-dat]] - [[motor-driver-dat]] - [[motor-dat]]
8
+
9
+## Electric Scooter RPM at 20 km/h
10
+
11
+For a standard electric scooter or bike (with 14–16 inch outer tire diameter), the motor speed at **20 km/h** is typically between **250 and 300 RPM**.
12
+
13
+#### Core Calculation Formula:
14
+$$RPM = \frac{Speed (km/h) \times 16.67}{Tire Circumference (meters)}$$
15
+
16
+#### Common Tire Size Reference:
17
+| Tire Outer Diameter | Circumference | RPM at 20 km/h | Typical Vehicle |
18
+| :--- | :--- | :--- | :--- |
19
+| **14 inch** | ~1.12 m | **~298 RPM** | Compact E-bikes |
20
+| **16 inch** | ~1.28 m | **~260 RPM** | Standard Scooters |
21
+
22
+
23
+
24
+## tech
25
+
26
+- [[motor-brushless-dat]] - [[motor-dat]]
27
+
28
+- [[battery-dat]]
29
+
30
+
31
+## ref
32
+
33
+
34
+- [[electric-scooter]]
... ...
\ No newline at end of file
battery-dat/battery-concept-dat/Battery-Graphene-dat/Battery-Graphene-dat.md
... ...
@@ -0,0 +1,30 @@
1
+
2
+
3
+# Battery-Graphene-dat
4
+
5
+### Summary of Graphene Batteries and Chilwee 72V 39Ah
6
+
7
+#### 1. What is a "Graphene Battery"?
8
+A "graphene battery" is **not** a completely new chemical system. It is an **enhanced traditional battery** (most commonly Lithium-ion or Lead-acid) that incorporates graphene as an additive.
9
+
10
+* **Mechanism:** Graphene (an ultra-conductive, thin carbon material) is added to the electrodes to lower internal resistance and improve thermal conductivity.
11
+* **Benefits:** These improvements facilitate faster charging, better performance in varying temperatures, and an extended cycle life.
12
+* **The Reality:** These are "graphene-modified" batteries. The performance gains are incremental rather than revolutionary, as the core chemistry remains traditional.
13
+
14
+
15
+#### 2. Analysis of the Chilwee 72V 39Ah Battery
16
+This specific product is **a Lead-Acid battery**, not a Lithium-ion battery.
17
+
18
+* **Technology:** It utilizes "Lead-Carbon" or "Graphene-modified Lead-Acid" technology. The graphene is mixed into the lead paste of the plates.
19
+* **Identification:**
20
+ * **Weight:** Significantly heavier than Lithium counterparts (typically 40-50kg for a 72V pack).
21
+ * **Construction:** Usually a series connection of six 12V blocks.
22
+* **Important Caveat:** You **must** use a lead-acid compatible charger. Using a charger designed for Lithium-ion batteries will cause improper charging and pose safety risks.
23
+* **Performance:** While better than standard lead-acid batteries in terms of current handling and life, it still falls short of the energy density and cycle longevity of Lithium Iron Phosphate (LiFePO4) batteries.
24
+
25
+#### Conclusion
26
+The "Graphene" branding in this context refers to a performance-optimized **Lead-Acid battery**. It is a reliable, cost-effective solution for e-mobility, but it is not a high-tech Lithium-based power source.
27
+
28
+
29
+## ref
30
+
battery-dat/battery-concept-dat/battery-concept-dat.md
... ...
@@ -0,0 +1,10 @@
1
+
2
+
3
+
4
+# battery-concept-dat
5
+
6
+- [[battery-concept-dat]] - [[Battery-Graphene-dat]] - [[battery-dat]]
7
+
8
+
9
+## ref
10
+
battery-dat/battery-dat.md
... ...
@@ -11,6 +11,7 @@
11 11
12 12
- [[battery-supply-dat]] - [[ti-battery-charger-dat]] - [[ti-dat]]
13 13
14
+- [[battery-concept-dat]] - [[Battery-Graphene-dat]] - [[battery-dat]]
14 15
15 16
16 17
## BMS